Company Information
CIN
Status
Date of Incorporation
13 November 1964
State / ROC
Delhi / ROC Delhi
Industry
Sub Category
Union Govt company
Last Balance Sheet
Last Annual Meeting
Paid Up Capital
6,964,126,710
Authorised Capital
20,000,000,000
Directors
Past Directors
Patents
The main object of the present invention is to provide a data collection and control device
(DCCD) for control and monitoring of entire equipments of an ESP performance test plant. The
DCCD for ESP performance test plant of the present invention is provided with capability for
simulating field conditions in assoc...
A method of pre-matching of pressed "U" shells with equal or different included angles and thickness adapting corrected bow technique consists of measuring the radii at the ends of the shells when at least one standard block whose height can be varied is being set to check the height. The corrected bow being set to
...
The invention relates to a method in a system for noise minimization and automatic packaging in cold milling steel tube production, comprising : a plurality of “V” shaped piston (5); one each pneumatically actuated cylinder (7) attached to each of the plurality of “V” shaped piston (5) to move the piston upwardly an...
The invention relates to a Radio frequency based material tracking system to
track materials/ boxes in a storage area corresponding to received signal
strength indication values, the system comprising a hand-held (HH) RDID
antenna, a plurality pair of fixed antenna disposed at a height on the left and
right side...
The invention relates to a novel design shock bar guide in an Electrostatic Precipitator (ESP) to meet the design requirement with reduced material content and eliminating ash build up, characterized in that a base member of the shock bar guide (4) is size-optimized; a first arm jointed to a first end of the base me...
The fixture (F) for making locking holes is made of a metallic fork (1)
having one side arc shaped for welding with a metal bush (12) which has a hole
at the middle to a accommodate a threaded nut (4) which has a knuhe diameter
(6) in one end and a threaded part (5) at the other. A plate (2) is fixed to the
meta...
The invention relates to a cooling arrangement in balancing piston area where cooling steam is guided inside the balancing piston of rotor to cool the metal in high temperature zone of turbine rotor which otherwise necessitates using of Nickel based alloys in the zones of high temperature. For this purpose, a turbin...
A stator slot wedge with corresponding stator slot for improved ventilation of
heat from hydro generators, the hydro generator at least comprising a stator
having a stator core provided with a plurality of slots to accommodate
corresponding number of conductive coils and bars made of copper wire and
assigned for...
The invention relates to a multipurpose epoxy-cast bushing for gas insulated
switchgears, the gas insulated switchgears having at least one each busbar
chamber, breaker chamber, and cable termination chamber, all being high
voltage chambers, the breaker chamber comprising a plurality of vacuum
interrupters and a...
The invention relates to an integrated emergency ash evacuation system to drain
the ash inside the chamber of a fluidized bed boiler and safely transfer the hot
ash at a temperature acceptable for handling in the transport and storage
system. This system utilizes a split wind box design and grate arrangement for
...
The invention relates to a weight optimized short-spanned double conveyor
gallery system for coal handling plant, comprising at least two end portal frames
disposed at each end of the system; a plurality of intermediate portal frames
placed at an equi-distance between both the end portal frames; a plurality of
b...
The present invention relates to a device (5) for holding austenitic stainless steel
samples during electrolytic etching for microscopic examination. The device
comprising of a long rod (7) of steel welded to a base (6) of steel which allows
adjustment of sample of any height. A tong (10) attached to the rod (7) ...
A device to measure the critical dimension of 3 DS and FZ shroud blade of steam
turbine comprising :
a fixed column (01) erected vertically on base (6);
a guide way (7) on base (6);
a moveable vertical sliding column (2) disposed such that it can slide on the guide
way (7) forward and backward;
a fixed male ce...
The invention relates to a method of retrofitting a single axis length measuring machine for calibration of micrometers to provide accurate measurement of objects, the length measuring machine comprising a base two heads, a micrometer head, a first stand to fix the micrometer for calibration, a plurality of poles to...
The invention relates to an improved tank for large generator transformer to minimize the eddy losses and hot spot temperatures, the generator transformer consisting of LV winding [7] with incoming and outgoing leads [5] through a plurality of independent cylindrical SS turrets [4] mounted on a SS sheet [6] which is...
The invention relates to an integrated horizontal condensing duplex heater for heating up water for water and steam circuit of coal-based thermal power plants, comprising an outer casing or steam jacket 1 forming an exterior; a plurality of steam inlet connection pieces (3 and 4) attached to the steam jacket (1), th...
The present invention relates to an insulating nozzle for dual motion interrupter
impregnated in a circuit breaker comprises a taper cylindrical outer shape having a first
terminal end with a "Y" shaped hollow inside and a second terminal end with a conical
shaped hollow inside part and a wavy configuration in th...
The invention relates to an arrangement of improved bearing assembly with
provision of oil seal in 3 phase traction motor. The arrangement comprises of
lubricating the drive end bearing (16) of the motor with grease, fixing the
bearing (16) in the drive end of the assembly when a oil seal (13) is fitted on the
o...
The invention relates to a system for removing air from an exhaust condenser
(3) of a steam turbine in steam-water cycled operated power plants, comprising:
at least one single stage or multiple stage roots pump (2) connected to a pipe
(3a) connecting the exhaust condenser (3) of the turbine, the roots pump (2)
...
The invention relates to a partially unsupported raft foundation (1) for
Retrofit Electrostatic Precipitators with ash pipe trench, comprising an
interconnection (2) between two portions of the raft foundation on either
side of the Ash pipe trench, wherein all the columns of the Electro static
precipitator are s...
The present invention relates to a method for the preparation of alumina based
nanofluid in different oils. The method comprises a converting a water soluble
salt of alumina to a final product and functionalize the same in -situ prior to
dispersing in oil resulting stable nanofluids. The properties for example
e...
The invention relates to a novel design of the guide apparatus including the mechanism
for controlling the movement of guide varies of model Francis turbines such that the
said mechanism can be universally used for testing Francis turbines models of all
specific speeds for the complete working range of model runn...
A non-metallic brush seals to restrict oil vapor leakage from lubrication oil chambers of Hydro-generators comprising: A plurality of base holders (1) having each an inner face (4) and corresponding dimensions of that of the circular rotor, the base holders (1) disposed on the rotor at an angle (8) A plurality of ho...
Conventional synchronous generators have less efficiency but can be regulated whereas permanent magnet synchronous generators cannot be regulated but they have higher efficiency. This disadvantage of permanent magnet generators being not regulated can be overcome by a hybrid excited synchronous machine which contain...
An improved support arrangement for large-size economizer enclosure duct of
circulating fluidized bed combustion (CFBC) boilers to eliminate anticipated
failure due to bending moment, the improvement is characterized by
comprising:a plurality of additional trusses (2) forming structural frames provided
at four p...
The invention relates to a method of determining a locked rotor condition of electric motors, in particular large electric motors with a view to provide locked motor protection. The invention proposes an additional technique over the impedance based detection of the locked motor condition, in particular where the sa...
This invention relates to a makeup water system in steam surface condenser comprising exhaust steam connection (1) to the exhaust neck (2) of the shell (12) provided with a vent connection (3), a condensate outlet (4) and cooling water inlet (5) and outlet (6) to the said condenser provided with condenser tubes (7) ...
The invention is a composite support block used to support fieid windings in
hydro generators. It is a V-shaped block made by pressure-molding epoxy glass,
embedding stainless steel plates at highly stressed locations on the block during
the molding of the bock, and coating the assembly with air-drying varnish,
...
Accordingly, there is provided a device for inducing draft in a heat recovery steam generator (HRSG) system, the HRSG being flowable connected to a gas turbine via a transition duct acting as a passage for exhaust gas from the gas turbine, the HRSG comprising: (1) a super heater formed of a plurality of tubes, (2) a...
This invention relates to A process for recovering spent chemicals from black liquor during paper making process comprising the steps of -feeding electrostatic precipitator ash (9) from electrical precipitator rotary feeder to a common chemical ash tank (26);
thoroughly mixing electrostatic precipitator ash in said...
According to this invention is provided a chromium-molybdenum-vanadium cast
steel containing niobium. More particularly the invention provides a heat
resistant chromium-molybdenum vanadium steel consisting essentially of 0.08 to
0.12% by weight of carbon, 0.015% by weight or less of sulphur, 0.02% by
weight or l...
1. A PV panel frame for leak-proof roof mounting comprising frame assembly (3, 3A) supporting a plurality of PV modules (1), characterized in that a raised sealing surface (17) is provided on frame (15) on which the PV module (1) is placed, a gasket (5) being positioned between said PV module and frames (4, 7) to se...
The present invention relates to an SF6 puffer interrupter with an improved
profile, comprising:
a PTFE nozzle (5) having a throat region (T) surrounding an annular clearance
(7) between a fixed arcing contact (3) and said nozzle (5);
characterized in that said throat region (T) is provided with gas enamels (8...
This invention relates to a method of producing bifurcate tubes and bifurcate tubes produced thereof comprising the steps of bending a straight tube in a conventional way to form a U tube blank, characterized in that the U tube blank (3) is placed in a modified die (1) on coating the blank with a lubricant and sea...
The invention relates to a process for modification of rotor core to increase structural strength of the rotor core of a hybrid excitation generator, comprising the steps of constructing a plurality of holes along the length of the rotor structure, the diameter of the holes depending on the size of the rotor structu...
A silicone rubber polymer composite comprising filler material selected from a single
non-metallic nanostructured filler material,
a multi filler being combination of non-metallic nanostructured conductive filler
materials.
An electro-magnetic current relay with improved reset and latch means adaptable to Diesel Engine locomotives for detecting current leakage, the improvement is characterized by comprising a pole piece (15) mounted on the basic current relay (Rl), the operating coil (2) of the relay being mounted over the pole piece (...
An apparatus for fully automatic magnetic particle inspection of industrial spring components comprising of: a fixed frame comprises test bed, which is equipped with Teflon rollers assembly for providing rotation of springs for full area NDT inspection and accommodate different sizes of springs; sprocket assembly (7...
The present invention relates to the improved aerodynamic design of a pair of blade
profiles valid over a wide range of flow regime. The so formed blades, pertain to high
pressure, intermediate pressure and first few stages of low pressure cylinders of axial
steam turbines.
The invented blades cover a wide range...
A method of enhancing laser absorption on steel substrate thereby achieving better properties of hardened case, comprising the following steps; surface texturing of a steel sample, to achieved a roughness value ranging from 1 to 2 microns, solvent cleaning of the surface after texturing for laser treatment, treatmen...
This invention relates to a nozzle of improved thermal and dielectric capabilities for sulphur hexa-fluoride (SF6) puffer interrupters, said nozzle made of (PTFE) Polytetra fluoro ethylene and having a throat region (T) surrounding an inter-electrode gap (7) of said interrupter, characterized in that said throat reg...
The invention relates to a device and a method for accurate calibration of anvils of outside micrometer, the micrometer comprising a plurality of adjustable anvils (1), a micrometer rod (2), a scale (3), and a micrometer stand (4), each anvil comprising a nut (5, 8), an anvil rod (7, 10), and a lock nut (6, 9), the ...
This invention relates to a process for corrosion resistive multiplayer coating to combat the corrosion of SITVC tankage of PSLV and GSLV comprising of the steos of: Surface preparation by grift blasting of said SITVC tankage, using 12-16 mesh alumina grift with acetone; characterized by applying a bond coat of nick...
Return channel deswirl vanes are primarily provided in intermediate stages of multistage centrifugal compressors for reducing the tangential or swirl component of flow before the flow enters the next stage impeller eye for further compression A swirling flow at the impeller inlet would reduce head and efficiency sub...
A dual face flange device (F) for coupling a steam turbine rotor with the Head stock of an indicating machine for machining comprising a turbine side (TS) coupling flange (2) welded to a coupling arm (3), a cardan shaft (6) side coupling flange (1) welded to other side of coupling arm (3) so that the device form a s...
Boilers, pressure vessels or heat exchangers have pressure bound components that are
fabricated may be designed as hemi spherical, semi ellipsoidal or torispherical. The present
manufacturing drawing gives the drill holes that form the openings on the dished ends of
boiler / pressure vessel or a heat exchanger as...
The invention relates to improved air distributor for fluidized bed wherein a directional nozzle air distributor (15) for fluidized bed operation wherein a multiplicity of directional air nozzles (7 A) are welded on the bed plate (3) in several directions (13) to achieve directional air flow, the top end of the noz...
A solar heatpipe collector for water heating comprising an insulated collector box (1) having a fin tube absorber panel (2) with plurality of riser tube (3) and a bottom header (5) characterized in that top header (4) of said absorber panel (2) is constructed as tube-in tube heat exchanger with utility water flowing...
The invention relates to a device to perform punching/caulking process around substantially unapproachable grooves on a turbine accommodating weights balancing the turbine, comprising a hammer (1) with a point noise for plastic deformation at the edge of the grooves provided on the turbine to mount balancing weights...
An improved plenum chamber for air cooled heat exchangers consists of a rectangular plenum chamber (I) provided with segmental plates bolted with angle plates (2) when all the four sheets of plenum chambers (I) are aligned towards tube bundle for sliding of air over the sheets (3) to reach the tube for optimum heat ...
The invention relates to a common single device to determine the efficiency of
different categories of non-destructive test methods, comprising a common
single block (1) having two members (2,3) to accommodate a testable job, the
two members (2,3) being weldably joined in an end-to-end relationship to allow
a va...
The invention relates to an indexing and clamping fixture for drilling
operation on taper surface of core press ring of all types of turbo generators and
the process for the same. The fixture comprises of a plurality of cross arms (6), a
plurality of taper seat (1), a plurality of threaded holes (2,4,5) , a plura...
A Pressurized Fluidized Bed Gasifier with shut down system operating without Inert
Gas; a refractory lined gasifier (01) means for producing syngas from
carbonaceous materials at desired composition and calorific value; an air flow pipe
line (02) provided with pressure and temperature gauges to admit the process ...
The inveation relates to an improved controlled shunt reactor comprising thyristor valves connected across the secondary of a 100% impedance transformer. A controller is provided for issuing switchiing commands to the thyristor valves through a base electronics and thyristor monitoring unit. A bypass circuit breake...
The invention relates to a microcontroller based governor for the control of tractive effort of diesel electric locomotive by controlling rotational speed of the engine comprising an actuator / senor unit (14) which consists of a DC servo motor (1) or stepper motor, lube oil pressure transmitter (2), boost air press...
A method of monitoring of screw conveyor rotation in ball tube
mills to avoid damage of the mill comprising fitting a wheel on the extension of
screw conveyor shaft (15), providing sprockets on the outer periphery of the
wheels creating air gaps between the sprockets and providing inductive
proximate sensor with...
The invention relates to a An improved Tower Type circulating Fluidized Boiler (CFB)
with optimally oriented combination of heat transfer sections to reduce space and
enhance flow distribution across the furnace, the improvement is characterized in
that the combustor of the boiler is divided by constructing a ser...
A typical closed circuit air cooling system employed for an air cooled turbo-generator has a plurality of cooler elements assembled in a row. The hot air from the generator Is drawn out and circulated across the cooler elements, through an air duct configured in the concrete walls. The cooler elements are air to wat...
This invention relates to a process for manufacture of flexible terminal connections comprising Helium protected Arc Welding
(He PAW) of G-Cu-Cr F35 casting at either end of Electron Tough Pitch (ETP) grade copper flexible strips, using S-Cu-Sn filler metal electrode of
^J, dia 3mm£and using inert gas shielding of...
This invention relates to full bore or Through conduit gate valves used in oil Field equipment,particularly in Wellhead and X-mass Tree configuration,manifolds,flow lines of offshore installations to open and shut the flow of produced oil and gas medium.More particularly,the invention relates to an improved full-bor...
The invention relates to a mounting arrangement for flame scanners in heat recovery steam generators (HRSGs), comprising a mounting arrangement for flame scanners in Heat Recovery Steam Generators (HRSGs) a guide pipe (1)
having a plurality of quartz windows (30) mounted at a second end portion, a first end of the ...
This invention relates to an adapter-sensor online monitoring system to identify a
faulty bushing used in a bush-bank adaptable to high voltage transformer or reactor. The system comprising a measuring device having an adapter (01) which is releasable and attachable to a bushing tap, an insulation support (02)
fix...
This invention relates to a process for the manufacture of supported zeolite film employing two distinct heating characterised by 1st step of microwave heating at a temperature range of 40 to 100°C of substrate such as herein described which are treated with zeolite precursor solution such as herein described for ze...
The invention relates to a distribution reactive volt-ampere compensator without sensing load reactive power comprising a three-phase voltage source converter (37) connected to the secondary of the transformer (19) through three link inductors (20,21,22) and the control block (38) to monitor the voltages and current...
The present invention relates to design of new runner to suit an existing Francis turbine water path. It is designed to meat performance at reduced head hence suitable for higher unit discharge and unit speed than originally designed.
The blade of runner comprises a set of nine profiles covering crown to skirt and...
This invention relates to a turbine speed control and overspeed protection, which are very critical for safe and reliable operation of the turboset. Hydro-mechanical overspeed emergency governors have been replaced with electronic overspeed protection system. This is realized using six probes connected in 2 out of 3...
This invention relates to a device for continuous and on-line monitoring dielectric parameters comprising an excitat¬ion signal source connected to the insulation of the job in the vacuum impregnation plant, a sensing probe connected in series with said insulation of the job in vacuum impregnat¬ion plant to sense th...
The present invention relates to a method of immersion of HTSC coils assembly in liquid
nitrogen inside the double wall container for HTSC Transformer comprises one coil
assembly having tightened with a plurality of bakelite rods (4) and nuts (6) with the
cover of GFRP container (7) keeping two terminals of coils...
The present invention is provided with an equipment for hydrogen embrittlement
of deoxidized/oxygen free copper comprises a rectangular shaped box (3)
provided with a porcelain tube disposed inside in a longitudinal axis direction
having a protruded part on both sides of the box; the protruded parts on both
side...
An improved dead center (C) consists of a center shaft (1) which serves as the center support of whole assembly. The shaft (1) is having collars (2) for support which are integral with the said shaft. A major tapered support (5) and a minor tapered support (6) are disposed in the spindle bore when the taper of both ...
This invention relates to an apparatus for providing redundancy to a processor module in a distributed control system comprising plurality of operator stations (1,2,3,4) and plurality of processing stations (6,7,8,9,10) and all communications between said operator and processing stations takes place over a set of li...
The invention provides a process for manufacturing high voltage terminal insulators for AC motors. Brominated epoxy resins with inorganic fillers are mixed in a first chamber, keeping a hardner material in a second chamber; maintaining the first and second chamber under vacuum at a temperature of about 65°C. The fil...
A device for maintaining furnace heat absorption optimally for coal fired boilers comprising super heater sprayer (1), signal conditioner <2), a logic panel <3), a man machine interface system (4), a motor control centre (5) and a wall blower local control system <6), said supef heater sprayer being located at the t...
An improved wall blowing system as claimed in Claim 1 comprising a logic panel and MMI panel is achieved by controlling the starting and stopping of wall blowers based on super heater steam spray flow high and low set points and maintenance of local heat absorption at an optimum level as well as avoidance of wall bl...
This invention relates to a circulating fluidized bed combustion boiler HHMrimmff for high marcasite content lignite characterized by a fluidized bed combustion for receiving a feed of marcasite rich lignite at its lower end (3) being fed by a variable speed conveyors (4), an air distributor (1) provided at the bott...
The invention relates to a method for protection of super heater tubes in
supplementary fired heat recovery steam generator (HRSG) in steam pressure
control system), the method comprising the steps of (i) measuring the on line
main steam temperature (1) and comparing the measured temperature with a
pre-set value...
A guard (P) to protect the seal/seals fixed on butterfly valve door disc/discs (4a and 4b) from damage by silt erosion consists of a steel bar (7) welded with steel flow guides (6) on top and bottom side inside valve inlet pipe (11). A stiffener (12) is welded between the flow guides (6) for providing rigidity and s...
A snubberless inverter circuit device for three-phase induction
motor drive with designed busbar and component layout comprising
a three-phase AC voltage input (1) connected to a rectifier (2)
having plurality of diodes (D1-D6) in three phase bridge
rectifier configuration to convert AC voltage to DC voltaga, s...
The present invention relates to a circuit breaker interrupter with movable piston and metallic blast cylinder comprising leak tight enclosure filled with insulating gas at a predetermined gas pressure, fixed contact and a movable contact that are supported at the terminal faces of said leak tight enclosure, said fi...
This invention relates to an inverter phase leg module using parallel connected IGBTs for high power snubberless three phase inverter, said inverter phase leg module comprising an assembly of a heat sink (1) having a blower (2) mounted on top of said heat sink, plurality of IGBTs (3) are mounted on said heat sink an...
The present invention relates to a process of forming a carbon nanotube yarn (CNT-Y) metal composite with enhanced mechanical strength and electrical conductivity comprising metal infiltration into the CNT-Y with CNT wetting liquid having nano-metal dispersion prepared by microwave heating technique, laser processin...
A method for producing nano particle dispersed glycol with improved thermal property
comprising the steps of: mixing of nanoparticles in the base fluid with magnetic stirring
to form a suspension; subjecting the said suspension to the step of ultrasonication for 10-
20h and stabilizing the suspension without any ...
This invention describes a CFD based optimization method to reduce pressure drop in the ducting between AH outlet to windbox in a VU60 type boiler by identifying areas causing high pressure drop, flow mal-distribution to burners, very high / low velocity and recirculation zones. Three types of modifications as detai...
A reusable steel structure assembly for locating anchor rod templates comprises: i) multiple numbers of first channel or vertical members (1) for taking the vertical load of the upper structure; (ii) second channel (2) used on upper structure of the composite template fixed with the help of spot welding; (iii) compo...
The invention relates to a rigid and reliable device to support tube bundles with lower inter-spacing a bundle chamber of fluidized bed combustion boilers, the tube bundle comprising at least one vertical tube (1) having a central hole formed on the vertical tube (1); and at least two multi loop horizontal coil asse...
The invention relates to an apparatus for accurately measuring the centre to
centre groove distance of oil field components, without calculation of errors
comprising two probe holders (02 and 03) with holes provided respectively on a
movable jaw and a fixed jaw of a known linear measuring vernier (01); the
probe...
The invention relates to an air diverter damper used to connect the working air
fan to a common delivery header isolating the standby air fan. According to the
present invention there is provided an air diverter damper so that auxiliary power
consumption of drive motors is reduced. A plurality of springs (23) and...
A field coil housing for high temperature super conducting (HTS) motor is provided which comprises: housing casing including top part (2) and bottom part (1) without joints; HTS filed coil encased within the said housing; means for connecting the housings; piping arrangement of the field coil housing bottom part pro...
The invention relates to a method of modifying sintering pattern of ash
generated, to reduce agglomeration, sintering and choking formation during
combustion of solid fuels in fuel firing systems, the method comprising the steps
of adding at an effective amount an additive to the solid fuels wherein the
chemical...
The invention relates to a method of converting existing carbonaceous fuel and
air fired boiler to oxy-fuel fired boiler, the method comprising generating a
stream of pure oxygen; allowing passing of a carbonaceous fuel stream;
segregating a stream of dust free flue gas at the end of a dust removal unit;
preheat...
The invention relates to a dual function compact heat exchanger in a nuclear power plant delimiting pressure drop to a minimum level for moisture separator and reheater assembly, the heat exchanger comprises a lower half portion constituting a moisture separator and an upper half-portion operable as a re-heater, the...
The invention describes the enhancement of AC breakdown voltage (BDV) of
epoxy resin cast body using nanostructured barium aluminate as a dielectric filler
material, for high voltage electrical applications with superior insulation
properties. Nanostructured barium aluminate having amorphous structure in the
x-r...
The present invention relates to an improved boring arrangement with a
boring bar (1) having a supporting flange (4) and collars (6). The boring bar is
inserted into the supporting flange and to the spindle of the machine. The
spindle is clamped to the machine head of the machine hydraulically. The
supporting fl...
Setting of co-ordinates of Lower type high voltage insulated stator bars along with upper stator bars at a time on wagon for 600 MW.and 800 MW turbogenerators is achieved by fixing a lug-rest (4) on an extended base (6) which is mounted on a support beam (2) when the lug-rest (4) matches with the.lug of stator and w...
A modified magnet synchronous machine to reduce the armature reaction effect comprising a slot profile for a stator core partitioned to accommodate stator winding in splitted compartment connected by a narrow opening.
The invention relates to a holding device for coils assemblies to prevent vibration of the coils inside a fluidized bed heat exchanger without restricting the free movement of the coils during expansion, comprising a plurality of
horizontal/inclined coils assemblies disposed in pairs; a plurality of vertical tubes ...
The invention describes the processing and fabrication of Basalt mat fabric-epoxy
resin composite laminate with dielectric properties of improved dissipation factor and
better thermal conductivity. It is therefore the primary object of the invention to
prepare a Basalt mat fabric-epoxy resin composite laminate su...
The present invention relates to tooling system for machining of taper pin holes on HP
turbine in assembled position comprising a sleeve (01) to be titled into the machine
spindle milling head, an extension sleeve (02) with double locking arrangement
between the first end of the extension sleeve (02) and the slee...
The invention relates to a device for mounting and dismounting of cutter-arbor assembly on and from 3-Axis HMC machine, comprising a base plate (1) to mount the assembly on the machine with the help of a first plurality of screws (4);at least one support column (2) mounted on the base plate (1), the support columns ...
An apparatus for integration in operation of two Impregnation Tanks, the apparatus
comprising of a plurality of first stator bars (3); a plurality of second stator bars (5) an
impregnation tray (2); and a hanger (4); wherein the first six stator bars (3) are placed
in the impregnation tray (2), and the second six...
A cooling assembly for a switchgear that comprises: three vertically segregated modules (47, 48 and 49), wherein the module (49) houses a break chamber (6), a bus bar chamber (29) and cable chamber (28) such that the modules (47 and 48) act as air columns; a set of plurality of cooling fans disposed within the said ...
The invention relates to an improved tool for friction stir welding process to produce aluminum to aluminum butt weld joints comprising a support body rotatable about a first axis, the support body having an end defining a shoulder; and a rotatable pin extending from the end of the support body downward from the sho...
A method for optimising the hot workability with respect to a given combination of temperature, and strain rate in nickel base alloy using thermo mechanical simulator. The phenomena of dynamic recrystallisation (DRX) was observed through metallographic analysis after the completion of hot compression test. Based on ...
The invention relates to an apparatus for automation of brush seal winding process with improved bristle pack density, comprising : a brush seal plate (1) having a plurality of slots (2) including radially projected fins (3); at least one wire-spool (5) with a shaft (20) accommodating wire spool and allowing the bun...
The invention relates to an Field Programmable Gate Array (FPGA) based data decipher device for extracting data from pulse duration modulated signals from field networks with parallel data conversion, and switching data by selecting the optimum bus line with acknowledgements for every data element, comprising; a FPG...
The invention describes the processing and fabrication of nanostructured alumina modified epoxy resin-based polymer composites with enhanced AC breakdown strength (BDV) for high voltage electrical insulation applications. Nanostructured alumina which is amorphous and also porous thus having a very low tap density in...
The invention relates to an automatically re-orientable horizontal axis solar thermal sun Tracker device for tracking the Sun from morning to evening to produce increased power output, from SPV panels (1) mounted horizontal, comprising: a supporting device (2) consisting of one each top, and bottom portion, the top ...
A carrier (c) for horizontal chemical etching on glass substrates comprising an upper structure (7) and a lower structure for holding pillars/legs (5) of the carrier. Three pillars (5) are fixed to the said structures (7,8). Twelve slots (3) are disposed in the said pillars (5) for holding glass substrates (2) for t...
The invention relates to a method of welding multi plane bend in auto welding machine. The invented device having horizontal pipe (01) having tapered opening of 60 degree to the horizontal axis with welded clamps (07) and curved clamps (12) in the vertical direction. The rectangular bars (02) fixed on the
either si...
The fixture for safe road transport of intercepter valve (IV) and control
valve (CV) of 660MW steam turbine has a base (B) which is fabricated with
square beams (2) using two channels for each of the square beams (2). These
square beams (2) are cross connected with square beams (3) to make the base
complete. Six...
The present invention relates to a jig for light induced plating of silicon
solar cell is made up of a jig body (6) having titanium connectors a jig for light
induced plating of silicon solar cells. A transparent latch (9) is fixed to the jig (1)
at one side for holding the solar cell tightly against the vertical...
The invention relates to a method of profile machining on the both ends of the elbows,
tees and shorter length of low alloy steel pipes having high thickness used for high pressure
and ultra high pressure steam generators. The novel holding method comprises the steps of
fixing the work piece (07,05) in between ve...
The invention relates to a method of producing wear resistant ceramic liner at
low sintering temperature consisting of wt. % of bauxite >88%, an
aluminosilicate and oxide additive mixture not exceeding 12%, with organic
binding adhesive of 5-10% concentration. The method comprising the steps of a)
formulating a ...
The present invention relates to the development of a centering device for preparation of stator frame for core insertion and alignment and a method thereof. The arrangement first aligns a piano wire along the central axis of stator frame of a turbo-generator by means of a plurality of fixture assembly attached on e...
The invention relates to an improved device for locating and positioning core laminations at motor ends during spot welding process, comprising :-two L-shaped members, the first member having a flange on right side and the second member having a flange on left side, each member provided with three sets of correspond...
Master fuel trip valve in tight seal applications with large temperature differential
across downstream and upstream components of gate in solid fuel feeding systems, comprising : a casing accommodating at least one wedge shaped
master fuel trip valve disposed below the self cleaning rotary valves, and having at t...
The invention relates to a digital three-phase secondary injection simulation system for accurate testing and calibration of power electronics control panels comprising a high-speed embedded device with a central processing unit enabled to generate three-phase sinusoidal voltages and currents with desired power fact...
An improved process on CNC lathe to reduce the process time for rough and
finishing operation of balancing weight grooves comprises of developing new
crank grooving tools with improved grade and cutting geometry. An improved
cutting parameters for the developed tool is selected and on the basis of this tool
a ne...
A fixture (T) for safe transportation of intercepter valve (IV) and control valve (CV) of a steam turbine, consists of three fabricated I beams (2A, 2B, 2C, 2D) connected cross wise with three I Beams (3A, 3B, 3C, 3D) forming a base structure (B) of steel wherein, four vertical wooden necks (4, 5, 7 and 8) are dispo...
An improved Heat Exchanger/live steam reheater (H) to raise the degree of superheat of superheated cold reheat steam (CRH) from high pressure turbine of a fast breeder reactor by live steam from steam generator consists of a bundle of finned U tubes (1) disposed in a cylindrical shell (2) for improving heat transfer...
A method of welding links (super heater pipes) in submerged Arc welding
automatic machine using counter weight assembly comprises of welding a heavy
thickness pipe (01) with a solid block (02) and welding the pipe (01) and block
(02) with lifting hook (03) having lifting hole (04) to handle counter weight
assemb...
The invention relates to an improved arrangement for preventing circulating
shaft current caused damages to the end shield mounted bearings of explosion
proof rotating electrical machines, the improvement is characterized in that the
inner ring (11) including the outer ring (02), the rotor shaft (15) and the bear...
During sub-merged arc welding, the flux and slag material get mixed-up, and
form ash. The ash is to sieved to segregate the non-transformed flux
material, which is sieved again. To eliminate several manual sieving steps, a
device is fabricated for automatic separation of flux and slag material.
...
An automated apparatus for chamfering/de-burring and measurement of large
volume of holes for different sizes of heat exchanger and condenser, the said
apparatus comprising two horizontal X-axis rail (1), one horizontal Y-axis rail (2)
mounted on X-axis rails (1), two vertical Z-axes (Z1 and Z2 axis) rails (3, 4)...
A method of controlling the ESP operation comprising the steps: Providing
monitoring means to monitor the operation of atleast the rapper process, hopper
heater and ash level indicator (ALI) switch; Synchronizing the monitored data of
the said rapper process, hopper heater and ash level indicator (ALI) switch;
C...
The invention relates to a method of increasing surface hardness of steam
turbine blading steel by high power diode laser hardening, comprising the
steps of :- providing a two stage heat treatment of an annealed and as
produced steel sample to achieve an initial hardness of around 360 HV0.3;
subjecting the treat...
The Working Platform, adjustable at various heights, during Stator Core assembly of Turbo Generators which also involves, pressing & welding. The assembly is undertaken inside the core pit in vertical direction. Core assembly is carried out by standing inside the bore of the core. The scheme of the core assembly is ...
The invention relates to a hydraulic braking system for efficient braking of temple cars, the temple car having at least one each front wheel assembly having two wheels, and a rear wheel assembly each enjoined by one each axle, the hydraulic braking system comprising: at least two braking units one each for each of ...
A high chromium-vanadium cast iron material, composition of which has C: 2.4wt%- 2.8wt%, Si: 1wt% Max., Mn: 0.5wt% - 1.5wt%, Ni: 0.5wt% Max., Mo: 0.6wt% Max., S: 0.06wt% Max., P: 0.06wt% Max., Cr: 22wt%-28wt%, Cu: 1wt% Max., V: 0.35wt% - 0.65wt%, and the balance being Fe. The above new material was casted using indu...
The invention relates to a retrofittable combined supporting system for single field multiple unit electrostatic precipitator in a thermal power plant with reduced height to width ratio of the Electrostatic precipitator, comprising : a beam (2) which supports the Electrostatic precipitator bearings and columns (3,4)...
A spherical contour machining attachment for lathe to generate spherical surface
consists of a tool post (5), a base plate (4) and a ground plate bolted to the base plate
acts as a slide for the tool post (5). A link rod having its one end hinged on rear end
plate with pin and other end connected with the tool po...
The present invention relates to a device for checking inside contour of yoke
engaged in servomotor of turbine comprising an assembly of one combined
multi-stepped bush (11) having diameter 70 to 260 mm and one spindle (2) of
diameter 40 + 0.02 mm having a radial drill hole diameter 22 + 0.02 mm and
one sliding ...
According to the invention, there is provided an apparatus for sector plate movement of cold end center section comprising a sector plate (1), an adjustor sleeve (3), a sector plate movement bracket (9), an adjustor rod (5), a top adjustor plate (6), a bottom adjustor plate (11), a plurality of bolt (10), with a plu...
The present invention relates to a device to reduce noise level emanating during
operation of a boiler feed pump assembly, the boiler feed pump increasing the
head of a flowing fluid by enhancing the pressure component of the fluid, the
assembly comprising an electric motor (3) coupled to a boiler feed pump (1) v...
The present invention relates to an Alternating Current (AC) machine for IGBT
based 3-phase drive 25 KV AC Electric Multiple Unit (EMU) to cater to the traction
load and coach air conditioning load of a traction vehicle, wherein is provisioned
a separate winding arrangement comprising traction windings, Hotel loa...
The invention relates to an wire-less feedback control system for controlling ESP
energisation, spark/arc detection and quenching, back corona detection and suppression
based on both HVR primary (transformer primary voltage and current) and secondary
(ESP voltage and current) parameters as combined feedback. HVR ...
An improved tool holding device is a L-shaped integral body having a slot in the
front of the holder for accommodating square shank tools of various sizes. The device has
plurality of threaded holes on the side of the slot for rigidly clamping the tool.
The invention relates to a device for measuring absorbed heat flux in a Boiler
furnace / heat exchanger, comprising a boiler / heat exchanger pressure pipe
brazed with a stainless steel sensor stud facing the heat source; at least two
online replaceable thermocouples disposed on either side of the pressure pipe
...
A 3 pole off load switch (Reverser) (C) of 1500 ampere continuous current employed in
traction application in high power electric loco consists of a cylinder assembly (A)and
end frame (4), a main shaft and a terminal bar assembly (3) mounted between cylinder
assembly (A) and end frame (4). A plurality of molding ...
The invention relates to a system for supplementing a low-calorific fuel
with a high calorific fuel in a furnace, the furnace operating with the lowcalorific
fuel producer gas (PG), and is occasionally supplemented with the
high calorific fuel (LPG) when the residual PGis inadequate to complete a
heat treatment ...
The hot exhaust gas line from the gas turbine is connected to the Heat Recovery
Steam Generator (HRSG) system for absorbing the heat available in the flue gas.
Generally the first section to receive the hot gas in the HRSG is the super heater
system. The super heater system may comprise one or more superheaters
...
The invention relates to a hybrid laser arc welding process for welding of stainless
steel capacitor box on the welding generator to improve weld quality, comprising the
steps of locating at least two parts of the capacitor box along a line in a single plane
adjacent to each other; forming a weld along the line b...
The invention relates to an improved labyrinth joint on flexible rotor of a Flame
proof A.C. Induction motor with Sleeve bearings to achieve a desired flame paths
to restrict leakage of flame, the improvement is characterized by following steps:
a split type inner bearings cap (IBC) (2A, 2B), each half provided a...
The invention relates to an improved device for mounting a speed switch probe
and a tachometer conjointly on a large size induction motor, the improvement
comprising: a square adapter with a flange enabled to conjointly accommodate
along the periphery an inductive speed switch and a tachometer; a stub shaft
coup...
A module test-setup to facilitate testing procedure of gas insulated circuit breaker (CB), disconnector switch (DS), earth switches (ES), gas to air bushing, current transformer (CT), voltage transformer (VT), surge arrestor (SA), bus bars and bus ducts designed to form different substation configurations. Gas insul...
A controlled shunt reactor (CSR) for reducing loss in switch-over voltage in long
transmission lines, comprising: a triggered spark gap connected across the
secondary of the CSR; a bypass circuit breaker (4) provided in parallel to the
spark gap; a controller for issuing switching commands to said spark gap
thro...
The present invention relates to a cooling process for compact rectifier engaged in
traction converters adaptable to electric locomotives comprises a fan assembly (14)
attached with a unique air guide duct (13) connected to two rectangular duct (17,18)
formed by the diode sink modules (2) and having a wire mesh m...
The invention relates to an advanced magnetic coil system for producing uniform magnetic field intensity with high accuracy, comprising at least four metal formers releasably joined to each other, and each having at least one groove; at least four coils connected to each other by eight studs, the coils being dispose...
The invention relates to a node connector device in space frame structure. The
points at which tubular members come together are called nodes or nodal points
which are connectors capable of accommodating multiple elements coming
together at different angles. There are many nodal connector systems in use.
The con...
The invention relates to an improved three-phase water-proof traction motor for adaptation in railway locomotives to allow operation through
flooded tracks, the motor having a single parallel path, the improvement is characterized by comprising: a terminal box (20) with rubber gaskets and glands with rubber seals t...
The invention relates to an improved stand-alone system for fatigue testing of round samples during robotic laser peening process with minimum bending of the samples, the round sample provided with a protective layer that absorbs the laser energy to restrict rapid expansion including generation of plasma, a tamping ...
The invention relates to a device for dismantling of jammed fasteners in turbine casings by separating the studs and cap nuts and then removing the cap nut, comprising : at least a first and third U-clamp disposed respectively on a base plate and a top portion of the device; the cap nuts being located on the base pl...
An improved silver plating device adaptable to silver plating in current
carrying hole of slip ring shaft comprising a box shaped structure having
a radial surface (2) at the proximate end and the box is provided a
plurality of interior holes disposed intermittently along the central axial
path out of which a pl...
The emissivity of thermal radiation for carbon nano tube coated boiler radiative heat surfaces
enhances from 0.6 to 0.8 to 0.98 to 0.99 when carbon nano tube coating is deposited on boiler
radiative surfaces. The coating provides non-sticky effect to prevent ash deposition on the boiler
heat transfer surfaces.
...
The invention relates to a universal transport frame device for safe
transportation of large-sized rotor frame assembly, comprising a frame member
consisting of two longitudinal metal beam, the central section of the frame
member being structurally strengthened by a pair of reinforced metal channel
members; at l...
The invention relates to a surface treatment process to enhance cavitation
erosion resistance of Ti6Al4V by a combination coating with top coat applied on
Ti6Al4V substrate by twin wire arc spray (TWAS) procedure, the combination
coating consisting of a bond coat and a top coat, the (TWAS) procedure
comprises me...
A process of machining an internal thread in a blind hole of field core bar by a twin
tool device, the blind hole being otherwise inaccessible by the standard tool, the field
core being adaptable to a rotor shaft the process comprising setting a groove tool
mounted with a tool holding bar at tool post; machining ...
The invention relates to ceramic honeycombs having multiple channels of polygon shapes which gives higher geometric surface area and mass density for better heat transfer and heat storage applications. High temperature resistance ceramic honeycombs are manufactured from a mixture of ceramic raw materials containing ...
An improved air baffler for hydrogenerator consists of an upper air baffle (1A)
and lower air baffle (1B) which are made of a plurality of moulded segments.
The segment consists of inserts (3) for fixing with upper (18) and lower brackets
(17) and inserts (4) for joining the segments and fixing the air splitters ...
A method of measuring dimension of a machine drilled circular holes on a metal, the method comprising the steps of: Step 1 : aligning a six-axis robot (4) coupled to a probe (7) at a predefined position (P1) within the said machine drilled circular hole at an elevation (Z1); Step 2: extending down the probe (7) at a...
The invention relates to a device for drilling holes for helium-leak test on a
rotor shaft of high capacity turbogenerators, the devices being mountable on
the rotor shaft, the device comprising a rotatable drilling head disposed inside
a housing (1); at least two bearings (2b, 2b) accommodated in a bearing
hous...
The invention relates to the manufacturing of ceiling girders for the high pressure boilers, the induced distortion is recurrent problem and the cost of the core correction is high and the problems are associated with matching in case of assembly and therefore a unique method has been found out and successfully impl...
The invention relates to a device for automated robotic spot welding of ventilation spacers over lamination sheets for turbo generators, comprising : a distal member provided at the end of an arm tool of an automated robotic welding machine, the turbocharger having a plurality of ventilation spacers (7) formed of s...
According to the invention there is provided concrete sleeper with taper grooves and clamping holes used that firmly lock the vertical column of the module mounting structure with the concrete sleeper. This absorbs all the variation of the concrete sleeper as well as vertical columns, thus providing vibration free m...
A method for depositing thin films over a substrate having pre-deposited film of temperature sensitive material comprising: heating the substrate having a thin film of temperature sensitive material in high vacuum chamber on a rotating heating plate to a temperature range of 25-250?C, creating the plasma by releasin...
The invention relates to E-2000 Draw Work Main Brake Foundation Plate Welding
fixture for alignment of foundation plate in the work skid assembly which eliminates
the problem relating to alignment in the skid, which as such be carried out on the
work bench and then it can be transported to the skid with the help ...
The invention relates to an improved bearing assembly for large rating A.C. Induction motor to withstand high axial load from driven equipment and enhance bearing life, the improvement is characterized by following steps; providing 3 series cylindrical roller bearing (5A) in combination of four point contact ball be...
The invention relates a method of producing a pink alumina component for electrode for Electronic water level Indicator used in Boilers in thermal Power plants, comprising producing a composition with alumina as the main raw material of average particle size 2 + 0.2 ?m; mixing the said ingredients in a pot mill; pre...
Compact rectifier for WAG7 locomotive with improved heat sink and layout of
diode heat sink assembly and bus bars, the rectifier having four compact diode
heat sink modules (1) in each arm of the rectifier, fuses D3 being mounted on
the AC bus bar (D4) and connected in series with individual diodes on diode heat
...
The invention relates to a separator device with spliced abrasion resistant ceramic tiles novel method of splicing the abrasion resistant ceramic lining by fixing weld-on tiles pasted using silicone sealant adhesive (3) and then welded to the body with mild steel plugs through holes provided at the centre of ceramic...
The invention pertains to development of skid mounted structure for turbo machinery.
Skid is a structural base for mounting of turbo machinery which comprises of channels and standard plates fabricated to sustain the entire load of rotating elements of the machinery including bearings and prime movers and that acts...
A tilting mechanism for a solar power plant the tilting mechanism comprising: a link rod coupled by two link pin wherein each link pin is coupled to an end of atleast a PV module; wherein the link rod further comprises of plurality of fastening means; wherein the fastening means at the proximal end is rotated clockw...
The present subject matter relates a mounting structure (100) for solar PV modules. The mounting structure (100) includes a plurality of L-angles (4, 5, 6, 7, 8, 9, 10, 11), each for mounting a corresponding side of the mounting structure (100). Further, the mounting structure (100) has first purlin (1) and second p...
The invention relates to an device for recirculation, extraction, and disposal of Fly ash In
High Pressure Fluidized Bed Gasification System comprising : means for fly ash
extraction and disposal; and means for recirculating fly ash containing unburnt carbon.
The invention relates to an improved oxyfuel boiler configuration for efficient firing of carbonaceous fuel and pure oxygen to enhance the operating life of the boiler components, comprising a horizontal combustion section for firing carbonaceous fuel and pure oxygen; a vertical heat extraction section for extractin...
The invention relates to a compact three phase current transformer for metal-clad gas insulated switchgear, comprising : a plurality of primary conductors one each for all three phases made of high conductivity materials; a core support housing with core support pipes terminating at either end with electric-field-co...
A phase segregated flame proof terminal box (PSTB) (1 ) for high tension motors, characterized by suppressing fire generated within the box due to electrical spark for loose connection, if any, comprising Back plate (A1), Phase segregated part (P), Wrapper (B), Bottom wrapper (C), Front cover (D), Terminals with ins...
An improved hydraulic system in a thermal power plant comprises main steam lines for transferring steam from boiler to turbine and vice versa alongwith different type of valves such as herein described, hydraulic actuators, pressure lines, pumps, motors for pumping fluid, accumulators for storing fluid at high press...
A centralized monitoring and control system for electrostatic precipitator (ESP) having a plurality of fields and ESP controllers, the system implementing cyclic and event driven communication for status monitoring and control commands respectively with the ESP controllers for HVR control and electrode rapping, wher...
The present invention relates to a device (5) to create a negative system in a
fuel feeding system for feeding crushed solid fuel into a pressurized circulating
fluidised bed combustor, the negative pressure being a pressure below
atmospheric pressure when the crushed solid fuel is introduced into the system,
th...
The invention relates to a process of hydrostatic testing of cast valve body
and valve door of an un-assembled butterfly valve, the process comprising
the steps of : providing additional built-up materials at the seating surface
of the cast valve body to produce a modified valve body with integral
seat; closing ...
The invention relates to a weight optimized large spanned double conveyor
gallery system for coal handling plants, comprising at least two end portal frames
disposed at each end of the system; a plurality of intermediate portal frames
connecting the end portal frames; a plurality of bottom chord members
connecti...
A pre-crack test system to determine an optimum pre-heat temperature for
producing crack-free weld-joint, the system comprising a hydraulic power pack
structure (1) having a piston (2) enabled to move upward and downward within
the structure; a top plate (5) rigidly fixed on the upper portion of the structure
(1...
The invention relates to an improved device for bundling and loading a machine
generated chips for safe gripping and lifting by a crane comprising : a shaped
metal plate (C0 having at least three threaded holes (E1, E2, E3) substantially at
central portion of the plate (C), at least three eye bolts fixed with was...
The invention relates to an improved process for restoring dimensional deviations
of a Baking wagon used for manufacture of HV Insulation on stator bars for
Turbo generators, the baking wagon comprising at least three identical channels
parallely disposed, and having associated toolings in the form of a side plan...
A process for lifting and alignment of a diffuser on casing of an Interceptor valve including a Control valve in a steam turbine by a device comprising: a bottom plate (1); a lifting rod; a guide subassembly consisting of a top plate (3), a guide plate (7), a locating pin (8), a plurality of screws (9) and a guide p...
The invention relates to a welding method to minimize welding induced distortion in fabrication of air duct assembly of wind-box in once-Through supercritical boilers, the fabrication of the air-duct assembly consisting of laying multiple welds at different locations along the entire length of the assembly which con...
An apparatus for section rolling machine comprising of: a bottom face (1); a top face (3); a split inner face; a split ring (4); a plurality of rings (5); a cup screw (6); and a plurality of screws; wherein the cup screw (6) is linked by ring by means of screw; the ring (5) is linked with split ring (4) by means of ...
The invention relates to a method of testing power transformers fitted with cable box at manufacturing locations prior to delivery for erection at installation site, the power transformer connected to ground laid cables constituting accessory of an electrical sub-station through a first end (2b) of an insulated copp...
The invention relates to a variable pressure drop distributor grid-nozzle system in
fluidised bed combustion boilers, comprising a plurality of fluidizing nozzles (1)
with bubble caps (5), and a plurality of airflow holes (4), the nozzles (1)
arranged on a distributor plate (2) in the windbox (6), the plurality o...
The invention relates to an universal clamping fixture for MIAB welding of
different diameter of tubes comprising a main clamp (01) with inner radius (R1)
varying in correspondence with the outside diameter of the tube to be welded,
the width, length, and height of the main clamp (1) being selected to maintain a
...
A fixture (F) for checking of aerofoil sections of the banana type hollow guide blade of
low pressure steam turbine consists of a base plate (6), a support plate (7) mounted on
the base plate (6) for supporting a plurality of templates (9, 10) and for arresting the
movement of templates in vertical direction. An ...
This invention relates to a 3-blade segment fixture for end profiles and throat gap
checking of banana type hollow guide blade of steam turbine low pressure module. The
fixture consists of a base plate (4) for fixing the outer (5) and inner (6) casing
segments at the required position according to the assembly. T...
A process for enhancing cavitation erosion resistance of martensitic steel by surface
texturing and plasma ion nitro-carburising consists of surface texturing the sample for
creating controlled roughness on the surface, treating the surface textured sample by
plasma ion nitro-carburising for increasing the surfac...
The invention relates to a weight optimized large spanned single conveyor
gallery system for coal handling plant, comprising at least two end portal frames
disposed at each end of the system; a plurality of intermediate portal frames
connecting the end portal frames; a plurality of bottom chord members
connectin...
A manhole door handling device comprising of worm wheels (1) for providing swivel movement to
the top plate (7), a set of bearing (2) for guiding the lead screw (3) which provides vertical
movement to the top plate (7). A guide pipe (4) encloses the lead screw (3). A base plate
accommodates the lead screw (3), a ...
The invention relates to a HRH steam strainer housing (1) is connected between
HRH steam pipe and an interceptor valve. A HRH steam strainer (10) is welded
over a blanking device (2) of the housing and then it is uplifted by an assembly
device inside the strainer housing. When the strainer gets fixed inside the
...
A process for accurate setting of technical parameters and conducting
detailed functional testing of electrically operated motor valves, the
process comprising the steps of : generating a continuous electric current
curve by capturing data during entire operation of the valve in a testing
process, the generated ...
The invention relates to an apparatus for stacking laminations to form annular
layers of superimposed laminations for use in generator stator core, comprising
a programmable manipulator mounted on a horizontal slide plate that travels
vertically on a vertical slide column; a programmable controller for controllin...
A non-vacuum chemical process for rapid synthesis of nanostructured CZTS
powders for solar photovoltaic applications.
The invention describes a non-vacuum aqueous-based chemical process for
synthesizing nano-structured CZTS [Di - Copper Zinc Tin Tetra - Sulphide, {Cu2(Zn,Sn)S4]
powders for solar photovoltaic app...
An in-situ process for stress relieving of heat transfer surfaces inside a heat exchanger chamber without damaging the peripheral refractory wall, comprising the steps of: placing at least one burner (4) inside a chamber (2) of the heat exchanger to carry out the heat treatment, the in-situ heating being made throug...
The invention relates to an improved method of grounding the terminal of stabilizing winding of a transformer to eliminate busing failure of the stabilizing winding due to high transient voltages including flow of high short duration short circuit current, the transformer comprising at least one each high voltage an...
The invention relates to a transmission and firing system for high viscous
crude adapted as stabilizing and/or load-carrying fuel in a corner fired boiler
for power generation, comprising a positive displacement pump (4) for
pressurizing the high viscous crude oil stored in a storage tank (2); a piping
network (...
The invention relates to a device for testing a single cell (a membrane electrode
assembly - MEA), which may be a low temperature polymer electrolyte
membrane fuel cell PEMFC or a high temperature polymer electrolyte membrane
fuel cell (HT PEMFC) or phosphoric acid fuel cell (PAFC), the MEA (5) being
disposed an...
A flat strip (9) is welded with both sides of a square cross sectional
rebar (10) for making a 'T' shape mounting rail (1). This mounting rail (1) is
welded to a mild steel support (3) for providing a common fixing arrangement for
two framed micromorph modules (M1, M2). The modules (M1, M2) are mounted
by slidin...
The invention relates to a dual purpose device to enhance performance of in
shaft seals disposed between the rotating shaft and top cover of Francis type
hydro turbines, comprising at least one shaft seal assembly (1) to prevent water
leakage between the rotating turbine shaft (2) and the top cover (3) through
w...
The invention relates to a two-stage reheater in a two pass tangential
fired boiler to maintain steam temperature imbalance between the right
and left leads of reheater outlet within 10°C, comprising : a reheater front
section having left side and right side inlet and outlet header; a reheater
rear section havin...
The invention describes a non-vacuum aqueous-based chemical process for synthesizing
nano-structured CIGS [Copper Indium Gallium Di-Selenide, {Cu(In,Ga)Se2}] powders
and the products thereof for solar photovoltaic applications. By following the process, a
variety of CIGS compound with variable levels of gallium a...
The invention relates to an improved device for preheating reactants in
PEM/HTPEM fuel cell stacks, the improvement is characterized by
comprising an anode side reactant preheating plate placed between the
insulation plate and the anode side copper plate; and a cathode side
reactant preheating plate interposed b...
The invention relates to a process of manufacturing a reference block for phased array and conventional ultrasonic inspection of tube butt welds, the process comprising the steps of :- providing a tube section having identical material composition that of tube/pipe butt welds to be inspected; cutting the tube sectio...
An universal device for mounting of steam turbine blade resting Root and shroud milling pads on machine, the device comprising a slotted fixture pad (2) remaining in contact with the steam turbine blade when loaded on the machine; an intermediate plate (1) removably accommodating the fixture pads (2) via at least fo...
The invention relates to a multilayer, resin bonded, Polyamide Polyimide sandwiched mica V ring for traction machine commutator assembly, comprising a resin bounded mica V-ring made from flexible molding micanite sheet, a polyamide paper formed of polyamide fibers with a high degree of stability including high elect...
An improved torque mechanism from the drive to the Casing line spooler unit
disposed in oilrigs comprising a flanged octagonal bush (3) with matching holes on the
pitch circle diameter for fixing with counter flange on Gear-motor unit, a taper bush in built
with a flange (6) with Jaws at 120° for transferring the...
The invention relates to an apparatus for automatic spot welding of ventilation spacers on punoling lamination sheets of a turbo generator comprising a robot mounted on a horizontal plate, a fixed spot welding machine, a robot controller,a gripper mounted at the end of robot wrist, two pneumatic sliding tables and a...
The invention relates to device for removing rust from continuously fed filler wire
used for manufacture of water wall panels using Panel Formation machines,
comprising a polyethylene hose (1) filled with multiple iron balls (6), a plurality
of hose clips (2) and a first hexagonal nut with first and second integr...
The invention relates to a device for lateral extraction of ash from pressurised
fluidised bed gasifiers, the gasifier comprising : a refractory lined gasifier (01)
for producing syngas with desired composition and calorific value by maintaining
the bed to a predetermined height at high temperature by allowing ea...
A method for preparing heterogeneous micro-porous viscoelastic sound absorbing/attenuating material with environmentally friendly porogen, the method comprising: utilizing a predetermined amount of a liquid room temperature vulcanizable (RTV) elastomer and a predetermined amount of a porogen, mixing the RTV liquid e...
A probe holding device capable of removing unnecessary overrun of probe during ultrasonic testing of rotor of a steam turbine comprising a probe fixed on the upper part (3) of device (P) by a socket head screw (1) and a threaded hole (2). The base (7) of the probe holding device (P) is fixed in a tool holder which i...
The invention relates to a method of machining a hole of unknown geometrical center by centering the machine spindle using a taper bush, the taper bush comprising a plurality of serrated diameters on the taper profile to match with the pre-drilled hole, and a recessed hole at the center of the outer diameter of the ...
The invention relates to a method of manufacturing a titania membrane for solid-
liquid separation devices, comprising the steps of mixing a raw material in the
form of fine powders of titania with ceramic bond, organic binders, and a solvent
to form a slurry; preparing a porous support having a base support; dep...
The invention relates to a method for manufacturing of ceramic tubes with an
end-collar adaptable as ceramic candle in hot gas filtration, comprising the steps
of providing an extruder having at least one mandrel, and a ram operable at
different speeds by an actuator; providing a main mold detachably attached to
...
The invention relates to A device for inserting a threaded insert in a valve casing of supercritical steam turbine governing system, the valve casing having a threaded hole H3 in which the threaded insert being inserted, the measurement insert having a guide diameter D8 which guides the threaded insert inside the th...
The invention relates to an advanced system to continuously and reliably monitor
hopper heater status and Ash level of Hopper of electrostatic precipitator to
enhance the efficiency of the (ESP) comprising a central processing unit (CPU)
having an in-built memory with control logic, an input interface, an output
...
The invention relates to a process of placing the silicon wafers on a ground electrode when the process chamber is evacuated to a reduced pressure of 40-50 mili Torr. The wafers are then exposed to plasma of SF6+O2 in the process chamber for 5 minutes and then exposed to atmosphere for about 5 minutes and again expo...
A support system for dump tubes is condenser for providing proper support to the steam dump tubes of a bypass system of a condenser comprising: a major base plate (1); a minor base plate (2); a strengthening stiffener (3); a curve plate (4); and a plurality of threaded hole (5).
A clamping device for surface grinding of piston rings of IP control valve of steam
turbine governing system comprising:
-a base plate (01) having plurality of threaded holes, a counter boring holes as well as
slots;
-plurality of taper bushes (02);
-plurality of taper wedges (03);
-plurality of clamps (05);
...
The present invention relates to an improved absorber pipe, especially for
parabolic trough collector, which has a greater service life and much simpler
design by avoiding complicated glass-metal seal folding bellows. The absorber
pipe consists of a central metal pipe with selective coating, double-walled glass
...
A positioning device for a steam governing system wherein the interceptor valve
(IV) and control valve (CV) includes threaded ring (10) to be placed deep inside a
bore consisting different threaded profile, wherein the said device comprise
plurality of locating plates (2) fastened with pipe subassembly which haul...
The invention relates to an improved Start-up Burner assembly with "sword and sheath"
configuration for circulating fluidized bed combustion (CFBC) boilers, comprising a wind-
box (1), a guide tube means (2), a guide sleeve means (3), an Oil Gun means (4), an
ignitor (5), a flame Scanner (6), and a retractor (7)....
The invention relates to a paper-less, Non-hygroscopic electrical bushing for high voltage electrical application, comprising: a bushing having at least one electrical copper conductor surrounded by a core material, a sheet-like spacer wound in spiral form around an axis of the conductor instead of Kraft/crepe pap...
The invention relates to a process for fabricating/Impregnating a paperless electrical bushing for high voltage electrical application, the electrical bushing having at least one electrical copper conductor surrounded by a core material, the core comprising a sheet-like spacer, a plurality of equalization elements i...
The present invention is provided with a device for enriching the low calorific value fuel with high calorific fuel like LPG, PG gases
comprises a cylindrical pipe shaped part having a curvature contour inside the cylindrical pipe such that a small diameter orifice exists at
the inside centre to create a venturi f...
The invention relates to an improved BLADE PROFILE FOR Axial reaction
Fan with enhanced aerodynamic performance, comprising : a rotor
assembly having an impeller hub accommodating at least one fan blade
disposed on a shaft arranged over a blade bearing means; a main bearing
assembly supporting the rotor assembly...
The invention relates to an method to produce a fillet joint between a tube
and fins by adapting a longitudinal activated TIG Welding procedure, the
method comprising the steps of providing an weldable tube (1) disposed
between two fins (2), the fins (2) being tack welded to both sides of the tube
(1); holding t...
The invention relates to a process for enhancing the calorific value of syn gas generated from fluidized bed coal gasification of high ash coals for power generation comprising increasing the lower calorific value of the syn gas (16) upto 60% generated through the fluidized bed coal gasification process by admittin...
The invention relates to an apparatus adaptable to GMAW process for
alternate supply of shielding gases with optimized gas glow rates and gas
pulsing frequency to a GMAW torch the apparatus comprising atleast two
hoses (3,4) carrying two different shielding gases from two individual gas
supply sources (1,2), the...
The present invention relates to fuel cell bipolar plate having multiple entry and a single
exit for reactant gas flow adaptable to Polymer Electrolyte Membrane Fuel Cells
(PEMFC) and Phosphoric Acid Fuel Cells (PAFC) comprising of a plurality of gas entry
ports incorporated in each bi-polar plate and emanating f...
The invention relates to an improved wafer carrier with adjustable wafer
holder jig for uniform deposition in vacuum system, comprising : a steel
body (1) having a plurality of fixed corners (4); at least two fixed arms (2)
configured on a first side of the body (1) perpendicular to each other for
holding at lea...
A method for measurement of thrust loads in hydroelectric power plant comprising: an assembly of the hydro-generator shaft with collar support (3) resting on the thrust pads (1) in the thrust bearing; a particular groove for routing of strain gauge cables (6) for data acquisition; insertion of external load sensors ...
A modified heating installation cover for a turbo generator stator core comprising: - base ring (1) to form a foundation; - plurality of vertical support (2) welded at the corner of the base ring (1)- outer body (3) as a casing made of thin MS sheet wherein glass wool insulation is provided at the outer surface. - a...
An improved steam conditioning Valve operable at supercrital parameters of steam in
a turbine bypass system, comprising a valve body (1) having two hemisphere shaped
bellies made of material SA 182 F91; at least one inlet Nozzle (F-91) and a plurality of
outlet Nozzles (F-91) welded to the valve body (1);a spool ...
Present invention disclosed the fabrication of flexible solid-state supercapacitor on single sheet of roll-able Nafion sheet, which can be folded and twisted. In the fabricated device, carbon nano particles (CNPs) film is grown directly over the Nafion sheet to facilitate the effective charge collection and transpor...
This invention relates to a method of generation and feed back of thermo-emf
for implementing an improved resistance hot staking process for providing
feedback of temperature to a welding process controller, comprising the steps of:
providing a thermo-emf processor; providing a hot staking device operably
attach...
The invention relates to an improved method of providing ceramic coating to
protect the anchor rods including retainer plates in a cyclone of CFBC boiler
against corrosion under Sox present in the flue gas, the method comprising the
steps of preparing the surface of the refractory structure including the cyclone
...
The invention relates to an improved friction stir welding process to form a plate-
to-plate Tee joint for transmission of current in power generation plant, the
process comprising the steps of providing a friction stir welding system (FSWS)
having at least one rotatable tool comprising a shoulder including a pin...
The invention relates to a distortion controlled process for producing hard high temperature erosion resistant coatings on burner tip plates of coal feeders, the method comprising the steps of : placing a plurality of burner tip plates on a base frame of a supporting device; locating at least two cross plates over ...
1. A microcontroller based rapping control system for controlling energisation of rapping
motors in electrostatic precipitators, said system comprises:
- a microcontroller based rapping controller for coordinating the rapping process based
on its rapping sequence programme;
- at least one output card for receivi...
The present invention relates to a new method developed for surface preparation during dielectric testing such that non-productive setup activities & use of technological materials are eliminated resulting total time cycle reduction & cost saving in dielectric testing process and hence implementing lean production s...
The present invention is provided with a multiple biplane damper to cater to larger duct requirements adaptable to power and industrial boiler, the multiple biplane damper comprises a plurality of identical rectangular shaped biplane dampers are assembled one over the other in an axial direction resembling to be a s...
The invention relates to a multi layered looped field coil device for salient pole
synchronous machine, comprising: a coil produced on a former through edge
wise winding of a flat copper strip, the produced coil matchingly disposed over
the insulated poles, wherein the number of turn of the coil is selected accor...
The present invention relates a propose a system to continuously monitor the temperature inside a coal feeding device in coal- fired boilers for early detection of fire comprising of one or many fibre optics based temperature probes / sensors (8) mounted inside the coal feeing device (CFD) to monitor temperature at ...
The invention is about the method for easy replacement of runner envelope (2) of
Kaplan type hydro turbine comprising; cutting the make up piece (8) to facilitate
easy removal of the runner envelope (2); removing the packed sand (25) by high
pressure water jets (24); removing the worn out runner envelope (2); rep...
The present invention relates to a device for on-line recording of dynamic movement of a
web plate during welding process of a T-joint; comprising -supporting means comprising
at least two tubes (3) adjustably disposable at spaced-apart relationship so as to
accommodate a web plate of T-joint; a first pair of squ...
An integrated test-apparatus for carrying out plurality of test a welding power source the test apparatus comprising: plurality of pulleys (1) pivoted at an end to haul up the welding power source and set it on a platform; a self weighted rod and a hammer (2) to conduct a impact test wherein the electric load to be ...
The invention relates to an improved device for extraction of pole keys engaging hydrogenerator "rotor" poles releasably attached to rim punching slots and end plates; comprising : a body plate (3) having a top-threaded portion "placed" over an extractable pole key (1); a pair of taper jaws (6) "are insert inside gr...
The invention relates to an improved process of in-situ joining of damaged
endless stainless steel belts or making new for transporting wafer carrier into a
vacuum deposition chamber, the transport belt encompassing at least one
powered roller and an idle roller located at space-apart positions on the transport
...
The invention relates to a method for reducing the induced peak stresses in high speed centrifugal compressor impeller in order to use the common impeller materials instead of superior quality materials even for higher operating speeds which results in higher efficiency and pressure ratio as per various industrial r...
The invention relates to an improved thrust Bearing spring system formed with Pre-Stressed springs, adaptable to Hydro Generator, comprising: a plurality of springs (1) pre-stressed to a given value of pre-load by means of a central screw; a hole reamed through a bottom portion of a retaining plate to apply a pre-de...
This invention relates to an improved Deaerator for dual deaeration
comprising of a storage tank provided with an opening and
mounted with a bellow type spray nozzle and initial heating pipe is
connected to sparger pipes on both sides.
This invention relates to an improved device to consistently maintain dry air
at higher pressure inside a transformer tank during log-distance of the
transformer tank comprising at least one air/nitrogen gas cylinder (2) having
a valve means (3) to supply regulated gas/air upon activation; a connecting
pipe (4) ...
The invention relates to an Improved jacking oil system for heavy duty gas
turbine, comprising a hydraulic oil distribution device comprising at least two A.C
motor operated hydraulic pumps and a D.C motor operated jacking oil pump for
turbine, a first of the hydraulic pumps acts as the main hydraulic pump to sup...
The invention relates to a method for fixing a cone assembly concentrically
inside a pipe of separator vessel of once through Supercritical boilers, comprising
the steps of providing a fixing apparatus; fixing the cone assembly (12) between
a clamping screw (3) and a stopper plate (2) in a removable arm (4) of th...
A Method Of Optimum Purging For Conventionalroot Welding Process Of Ferritic Chrome Moly Steel Pipes
The invention relates to a method of welding ferritic chrome moly steel in butt joint root welding .The invented method having work piece (01)and (02) having edge prepared opening end of 30 degree to the horizontal axis with butt joint area. The gas flow movement arrested by full sealing sheet (06)and sealing sheet ...
An apparatus for detecting steam tube leaks in power plant comprising an intelligent sensor (100) having automatic calibration, powerless cable free configuration, automatic purging, self-diagnostics features that consists of a microcontroller (101); interfaced to plurality of elements that communicate with each oth...
An apparatus to measure cell efficiency of a solar cell, the apparatus comprising a temperature controlled chuck; at least a solar cell mounted on the said temperature controlled chuck; a light source for emitting light, capable of emitting light matching to solar spectrum wherein the light is incident on the solar ...
An improved adhesive for filling of insulation cap in hydro generator comprises
a mixture of compound : an Araldite resin CY 230 (100 parts); a Hardener
HY 951 (10-13 parts) and a Base material 200-300 gram (Fine silica sand
powder as per IS-67-1967 grade-2 400 mesh) and the resin Hardener are mixed
in a contain...
The invention relates to a shower head electrode for uniform distribution of
process gases in a plasma vacuum chamber to produce texturised silicon wafers
comprising a vacuum chamber having a vacuum feed-through (3) and receiving
premixed process gases from a gas blender via a first tube (10), the first tube
(10...
The invention relates to a clamping device disposable over a spherical ball
joint joining spaced-apart components in a space frame structure, the
device comprising a plurality of, Ω - shape clamps welded over two
horizontal tubular members of the spherical ball joint, and further jointed
to a plurality of tensio...
The invention relates to a method for hydraulic testing of bearing shells in a
turbogenerator, the method comprising the steps of configurating a longitudinal
hole in the bearing shell; providing at least two dummy plugs embedded on the
bearing shell; positioning an inlet including a non-return valve at a first e...
The invention relates to an improved hybrid insulation system for stator winding
of induction motors manufactured under vacuum pressure impregnation technique, with improvement is characterized in that tip height of the stator slots and typical shape of the wedges is selected at lower values compared to those of co...
A device (C) for setting the desired length and checking the taper present in the rectangular cross-sectional blank length comprising a base (1) having two threaded holes (13) at the left extreme of the said base; a vertical column unit (9) fixed to unit (1) through bolts in threaded holes (13) and fixed to the mach...
The invention relates to an improved method and device for removing the diescher disc from gearbox output shaft in Cross Roll Piercer and Elongator Units of Seamless Steel Tube Manufacturing plant, the process of seamless steel tube manufacturing using cross roll piercing and elongation method uses two rolls and two...
The invention relates to a device for injecting a sublimating substance in
between annular gaps (9) of double tube assembly (30) in a double tube and shell type heat exchanger (10) for enhancement of heat transfer between a first fluid medium flowing inside the inner tube (1) and a second fluid medium flowing outsi...
This invention relates to a process for the manufacture of grinding rolls comprising the steps of fabricating a mild steel (MS) former with two concentric outer and inner layer of size and shape matching that of the outer layer of the grinding roll, welding brazed tungsten carbide (WC) to the inner side of the outer...
A solar panel of reduced size for generating electricity by absorption of solar rays the said device comprising plurality of uniform-shaped solar cell interlocked adjacently on the surface area of the solar panel made incident to the light source, wherein the solar panel is fastened to a flat sheet and coupled to a ...
The invention relates to a method of submerged arc welding of a shorter length steel pipe with elbows without any hindrance of welding torch movement by the rotor body of high pressure steam generators, comprising the steps of: placing a shorter length pipe concentrically in the rotor body by simultaneously adjustin...
A system for external, conductive, partial or full heating of solid or hollow objects with cylindrical or rectangular or square cross section up to high heat flux level comprising at least two metal blocks having curved (2 or 14) outer periphery and with inner groove to match the outer periphery of the object (1 or ...
A protection device against a reverse running of a soot blower in a fuel-fired
boiler in case of a wrong-phase sequence input of the power supply, comprising
a three-phase power supply source (1) capable of inputting direct power to at
least one motor (2) of the blower including a controlled input to a plurality ...
A method to enhance the range of voltage control of rectiformers for increase in load
current over a pre decided level by increasing the number of turns of the Bias (2) and
control (3) winding of the transductor. Additional turns generate additional exciting
ampere turns generating a control voltage which on bein...
A system for cooling mandrel head before push bench mill process to prevent deformation and to enhance the life of mandrel during manufacturing seamless steel tubes comprising a water trough (4) configured under a mandrel head (9) for collecting the return water after cooling the mandrel head (9), one individual wat...
Spray-able type filler modified epoxy resin hardener composite paints comprising solid filler material, liquid epoxy resin, and a liquid hardener material in the range of 1:4:1 – 3:4:1 respectively.
The invention relates to a multi-channel output pulse generator (1) equipment
for test and validation of SOE (sequence of events) recording capability of DCS
(distributed control system) of a typical mega power plant and industrial
processes control system comprising: high speed embedded system (2);
microprocess...
The invention relates to an edge preparation method and welding of a main plate with a support shell of a lifting attachment assembly to lift steam generators, comprising the steps of positioning the main plate (1) upto the water level of the generator and mounting the support Shell (2) over the main plate (1), wher...
A reliable and energy-efficient permanent magnet based alternator "for" auxiliary
power applications, comprising a stator stack disposed "in" a stator frame; a rotor
stack with rotor hub disposed on a rotatable shaft; a plurality of high power magnets
placed inside a corresponding number of slots configured on th...
A method of measuring the uniformity of the sheet resistance of a Si wafer by mounting plurality of four probe heads over a block that accommodates on the surface of a Si wafer wherein the probe heads are positioned equidistantly over the block and the probes moves up and down to instantaneously come in contact with...
The invention relates to a three phase compact disconnector switch with all three
phases located in a single enclosure to prevent secondary breakdowns in gas
insulated switchgear equipment comprising a spherical connector extending
electrical connections in multiple directions; a fixed contact covered by a fixed
...
Root soldered wrapped-on high fin tube is developed in which thin sheet is wrapped over the base tube and tip of the fin is stretched due to which thickness at the top of the fin less than that of the root. Root of the fin is soldered with base tube so that no air gap is developed in between the fin and base tube.
...
A method for detecting and classifying power quality anomalies in power systems, like
sag, swell, harmonics, flicker and transient, said method comprising the steps of:
- analyzing a given power quality monitoring signal with a reference power quality signal;
- calculating with the help of real time hardware impl...
The main objectives of the invention is to develop a method to connect lower diameter tube with higher tube and to eliminate machined inserts. These objects have been achieved with the present method of connecting a lower OD tubes and higher OD tube. With a proper tool set up swaging of the tube can be done on the h...
The invention relates to a system for removing contaminants wet gas portion of synthesis gas produced from solid fuels in a gasifier having a cyclone, first heat exchanger, and a second heat exchanger, the system comprising; a spray tower (16) in which synthesis gas from the outlet of said second heat exchanger ente...
The present invention relates to a jig/device (D) for marking pitch circle diameter (PCD) on any disc type object with known outer diameter. The said jig consists of a slotted segment (1) having a slot (2) and a circular slot (7) for providing a marker (6). A semicircular segment is fixed to the slotted segment (1) ...
The invention discloses a method of inspection of stub to header weld joints in steam generators by phased array ultrasonic testing (PAUT) with simultaneous use of multiple sound waves. The method comprises of placing a phase array (PA) probe (9) on side tube (6) wall to transmit and received sound wave (10, 12 and ...
The invention relates to an improved process for inserting a magnetized rotor
shaft (403) into a stator core (406) of a permanent magnet generator
(PMGs), comprising the steps of inserting a plurality of high energy magnets
into the rotor shaft (403), the quantity and size of the magnets-being
optimized dependin...
The invention relates to a computer assisted system for calibration of high temperature strain gauges to 600oC and above, comprising a load control device (3) having a feedback panel (7), a fixed jaw (4), and a moving jaw (5) a high temperature strain gauge (1) to be calibrated pasted or welded on a sample specimen ...
The invention relates to a method of producing Copper indium gallium
sulphide/selenide CIGS) quaternary sputter target of (CulnxGa1-x Se2, wherein x is
greater than or equal to about 0.5) and Copper zinc tin sulphide/selenide CZTS
and (Cu2-aZnbSnc(S/Se)4+d wherein 0<=a<=1, 0<=c<=1 and -1<=d<=1) by
hot iso-static...
The invention relates to a method of port closures in pressure vessels to improve helium leak test procedure, comprising the steps of placing respective retainer flanges ( 6) concentrically on all the ports (1) of the pressure vessel (3); locating the respective reaction bar rings (7) concentrically on the ports (1)...
The invention relates to a system for controlling and monitoring operation of rapping motor of an electrostatic precipitator ESP (8), comprising a plurality of fields, generated and maintained by a high-voltage rectifier transformers controlled by EC-HVR Controllers; and a plurality of rapper motors controlled by gr...
A fixture (F) comprising a base (B) fabricated with two square beams (1)
when each square beams are made of two channels. Three channels (2)
connecting the square beams transversely for making the base complete. Two
more channels (13) are welded to those transverse channels (2) for supporting
the plywood for cus...
A method for isolation of external heat transfer surfaces of Superheater and Reheater constituting tube-bundles immersed inside Fluidised Bed Heat Exchanger (FBHE) in a Circulating Fluidised bed Combustion (CFBC) boiler, the method comprising the steps of introducing a first bypass line (19) for isolating FBHE Inter...
The present invention discloses a device and a method for correcting transverse distortion of Panels caused during the formation of the same by welding machines. The device comprises of two rectangular boxes (3), one placed above the panel (1) and the other below the Panel (1). The boxes (3) are coupled to two side ...
The invention relates to a method of manufacturing hard faced seat assembly in blow down (pressure drop) valves for high pressure steam generators. The said method comprising the steps of machining a stellite bar stock (7) to suit inside of a sleeve (8); selecting the material of the sleeve (8) same as that of blow ...
The invention relates to an improved thermo siphon filter device (TSF1) for
continuous filtering of contaminated oil (8) in operating power transformers to
provide un-interrupted power supply, the device comprising a metallic container
(2) allowing passage of contaminated transformer oil for separation of water
...
The invention relates to an array of thermal energy storage elements formed of
phase-change materials and/or ceramic, metallic and polymer materials for
enhancing solar thermal system efficiency, comprising a plurality of thermal
storage elements formed of natural raw materials, and phase-change materials
fabric...
This invention relates to protection covers for safe transportation of
Interceptor Valve and Control Valve assembly of steam turbines
comprising of Pipe assembly, ring, strip & rubber packing.
The invention relates to a system for monitoring ON/OFF status of Hopper heater, heating elements of shaft and support insulator and ash level status of electrostatic precipitators, the system comprising a plurality of fields, generated and maintained by high-voltage rectifier transformers, controlled by EC-HVR, ele...
The invention relates to a method for evaluation of erosion property of fly ash
produced in boilers. Initially a specimen is formed and cut and matched to an angle
of impingement and then weighed in the balance of accuracy of 0.0001 and its
dimensions are measured. The fly ash collected and sieved to the required...
The present invention relates to a device for clamping the job during edge preparation of riser pipes. The device is used while holding the job in special purpose machine. The device is like a V shaped body having inner surface in the form of two inclined plane at an angle of 120° and with serrated surface for prope...
The invention relates to a method for inlet edge hardening of LP stage
high rating steam turbine blades in a temperature controlled high power
diode laser hardening process, comprising : controlling laser power/scan
speed to produce droplet erosion resistant hard layer by laser hardening
at a temperature in the ...
The invention relates to a method of welding two tubular members of dis-similar materials without stiffener plates to produce super heater links for high pressure boiler comprising the steps of placing the horizontal pipes (01.02) at a 55 degree slant opening on a device to position the job with two pairs of angle p...
The invention relates to a device to guide and support panel tubes assembly and bend tubes for welding preceded by tack welding to form a hopper assembly in high pressure boilers, comprising a base plate (16) with a plurality of locking screws (18) and rotating wheels (17), including a hollow cylinder head (06) weld...
A method for removal of trapped chips between the bearing pedestal and
foundation frame to achieve desired insulation resistance of the bearing in a
turbo generator, the method comprising the steps of drilling a tapper pin hole in
the foundation frame and driving an insulation plug into the holes; transferring
t...
The invention relates to a method of holding 90 bend elbows having 88.9 mm OD (2) in a holding device (3) for machining and edge preparation in a turning center. The method comprises of developing a fabricated box like shell or holding arrangement (3) to hold 90 bend elbows having 88.9 mm outer dia and then drawing ...
An apparatus for joining heavy wall thickness plates and pipes employing
Tandem gas metal arc welding (TANDEM GMAW) procedure preceded by a
narrow gap joint configuration, the apparatus comprising at least two wire spools
(8,9) having consumable electrode wires wound thereon; at least two wire
feeders (6,7) rece...
The invention provides a method for selection of control voltage of Regulation channels in excitation system of synchronous machine. The control voltage so selected is extended to the follow up control circuit available in each channel. With this, every stand by channel follows the operating channel, while on
stand...
The invention relates to a low NOX emitting solid fuel fired wall burner
apparatus for boilers in thermal power plants, comprising an innermost liquid fuel gun (1) with a guide pipe (2), liquid fuel along with atomizing medium egressing through the nozzle (3) into the boiler furnace with corresponding air supply is...
The invention relates to an apparatus (A) for holding and positioning a chamfering machine for making edge preparation of water wall tubes. The apparatus comprises of a frame (12) with a screw rod (2) fixed at top with bush bearing and box nut (15). A cross slide through box nut (15) is connected with a hook (18) th...
The invention relates to a technique for Local Post weld heat treatment of membrane water wall panel made of Tungsten enhanced Cr-Mo steel used in supercritical boilers to avoid environment assisted cracking failures. The technique consists of first post weld heat treating the tube welds of the membrane water wall p...
A automated mechanism in its single form to mitigate the source of noise generation in manufacturing sites wherein comprises “V” shaped piston (5) to carry the load; a pneumatic actuated cylinder (7) engaged the said piston (5); a pneumatic system means that move the “V” shaped piston in upward and downward directio...
A sensing circuitry device to energize dual motor drive of sensor based dual
axis solar tracker system during low-solar incidence periods, the device
comprising a plurality of light dependent resistors (LD, LDR1, LDR3, LDR4,
LDR5) to receive scattered low-solar incidence, connected to a plurality of
fixed and va...
The invention relates to an improved rapping hammer for electrostatic precipitator to restrict emission levels and increase efficiency, the ESP comprises at least one set of collecting electrodes and emitting electrodes which upon application of a unidirectional high voltage respectively connecting position and nega...
An automated system for prediction of percentage unburned carbon in fly ash and bottom ash using various influencing independent variables like fuel i.e. coal properties and operating conditions of the combustion process in the boiler. The apparatus was developed based on the historical representative data sets from...
Filler modified polyurethane coating materials for acoustic attenuation are prepared by combining a commercial-grade liquid polyurethane resin (acrylic poly-ol), pre-defined solid filler material/s and a liquid hardener (aliphatic iso-cyanate) respectively by maintaining the desired level of ‘Resin-Hardener-Filler’ ...
The invention relates to a fixture for perfect alignment of inter-connecting
nozzles of feed storage tank and heater of a Deaerator in a power plant and the
process for assembling the same. The fixture (11) consists of two parallel
channels (1, 2) joined to each other with welded pipe rings (7, 8) where smaller
...
There is provided a rectangular Compressed Asbestos Fiber (CAF) sheet having thickness 2 mm and the length of the sheet is equal to the perimeter of the pipe which is to be marked with an over lapping length of 25 mm. The marking method comprising the steps of: The pitch distance is calculated by dividing the circum...
The invention relates to an apparatus for lifting and positioning coal nozzles inside the coal compartments in supercritical windboxes for fuel firing in power plants; comprising a first plate (01) disposed horizontally and at two ends welded to a plurality of plates (02) perpendicularly the first plate (01) is weld...
The invention relates to a referencing device for HMC to mill off technological materials from lock type-turbine blades, comprising : a locating member having a vertically placed base plate provided with hexagonal threaded holes for inserting of one each fixing bolt and referencing bolt, a vertical column absent of ...
The invention relates to an arrangement for fitment of a hydrogen cooled generator module to an existing foundation of a water cooled turbogenerator with new end shield, suction chamber and new sealing. The arrangement comprises of an integrating suction chamber (2) of stator frame (5) and box structure of end shiel...
A new cross around pipe (20) with new arrangement of bellows, stiffener rods and pipe
connections consists of a plurality of bellows (1,2,3,4,5,6,7) of 10 convolutions each
arranged between different pipe segments and reducer (10). Stiffener rods (8,9) are
connected between bellows with the help of stiffener boxe...
A lifting fixture for lifting and inserting unwounded core(s) 600/660 MW turbo
generator into a starter frame comprises of lifting studs (3), coupler (4), lock
nuts (5) and rings (6). The studs are assembled with the help of coupler. 8 such
studs (3) are inserted through the rings (6) and through the transport an...
A fixture for supporting an overload valve for high capacity steam turbine during transportation the apparatus comprising: a first set of three number of T-shaped beam (3) arranged longitudinally forming a base; a second set of three number of T-shaped beam (3) arranged transversely to the first set of T-shaped beam...
A universal adjustable device for root and shroud milling of steam turbine blades on CNC horizontal machining center comprising at least one base (1); at least one blade rest (2); at least one wedge (3) having a taper surface (13); at least one bolt (4) fitted to the wedge; at least one nut (5); at least one cover p...
A universal adjustable device (A) for locating steam turbine lock blades along
the central axis for carrying out root and shroud milling on CNC horizontal
machining centre comprising:
body (01) having plurality of holes with internal thread;
rod (02) having one end threaded that fits into body (01) by thread con...
An improved device for supporting the emitting frame set during erection and
maintenance of Electrostatic Precipitators (ESP), the ESP comprising a plurality of
collecting electrodes and discharge electrodes disposed in a space-apart
relationship; an unidirectional high voltage is applicable in between the
elect...
The invention relates to a method of deposition of thin films of ternary metal nitrides by Pulsed Direct Current (DC) reactive magnetron sputtering on plasma nitrided surface to achieve duplex coating on martensitic 13Cr-4Ni and AISI 410, 16Cr-5Ni, austenitic 18Cr- 8Ni and manganese steel substrate used in forming h...
The invention relates to a method for reducing intensity of incident light
uniformly across entire wavelength range for measuring weak light
performance characteristics of solar cells, comprising the steps of :
performing an STC testing of a plurality of solar cells at an intensity of 100
mW/cm2, AM1.5G spectrum...
1. A coupling device comprising:
a coupling part II which holds the abrasive wheel 20 mm dia with a shoulder
abutting one face of the wheel;
a separate coupling part I which fits inside part II where the external peripheral
surface of coupling part I interface with the internal peripheral surface of
coupling pa...
A dust free flue gas is driven to a mixing chamber (12) by a Flue gas recirculation (FGR) Fan (20) and mixes uniformly with secondary air and release into a windbox (16) through FGR chamber outlet duct (31). The mixture then goes to combustion chamber (18) and maintains the targeted temperature for any type of coal ...
The present invention relates to a process of synthesizing kesterite nanopowder
including a compound of the formula: Cu2-aZnbSnc(S/Se)4+d wherein 0<=a<=1,
0<=b<=1, 0<=c< = 1 and -1<=d<=1, comprising the steps of:-contacting a
source of Copper, a source of Zinc a source of Tin, and a source of sulphur
and/or sele...
This invention relates to an improved strip electrode gas metal arc welding system for providing higher deposition rate, improved gap bridging capability, higher welding speed and better weld quality. A guide tube (3) for feeding a standard MIG welding wire (1); a rolling - cum - feeding means (5) for converting the...
The invention relates to a method of manufacturing of Alumina based wear resistance materials using calcined bauxite as a source of raw material. The calcined bauxite mineral is selected such that it has AI203 above 83 %. The ceramic liners produced by firing at temperature 1540 to 1580 C has near zero water absorpt...
The sealing in the switchgear panel is to restrict the arc fault exhaust energy. A front door assembly (1) in the switchgear incorporates the sheet metal flexured (3a, 3b, 3c, 3d) on all the sides extending inwardly from all the outer edges. All the sides hold the allocated U-shaped gasket support angles (2), with a...
A fixture (1) of "c" shaped structure having a base (4A) and a top (4B) jointed
by vertical plate (4C) is made either by fabrication or milled to a single unit.
The fixture has T-shaped slot (4) to provide T-slot bar (3) in the groove. A
shield plate (2) is fixed to the T-slot bar (3) with screw (7A). The shield,...
The invention relates to an apparatus for preparation of edges on both sides of
an elbow with a single setting in a vertical boring machine, comprising : a base
plate mountable on a table of the vertical boring machine with "T" bolts and
nuts; at least two leg plates welded vertically on the base plate, the horiz...
A filter cake removable system for a fluidized bed gasification system, the system comprising: at least a ceramic candle filter (1) suspended from a ceramic filter tube sheet (4); a metallic mesh (2) encapsulating the said ceramic candle filter (1), the metallic mesh (2) and ceramic candle filter (1) maintaining a s...
This invention relates to a device for machining of slits on the joint
plane of IP inner casing of steam turbines comprising of a circular
saw body with bore provided with a side plate with bore on both
sides riveted to each other wherein a plurality of holes are provided
on the circular saw body for mounting of...
A door assembly (1) with an improved locking mechanism to ensure effective locking and capable of withstanding extreme stress and an effective sealing arrangement to prevent any outward flow of gases or electric arc from the corresponding chamber in case of an internal arc. The door assembly (1), composed of a flat...
The invention relates to a method to prepare a stable suspension of CNT/Pt catalyst in the form of a catalyst ink for making electrodes for proton exchange membrane fuel cell (PEMFCs), comprising a method to deposit CNT/Pt (Carbon Nanotubes on which platinum nano particles are deposited) catalyst ink made using mi...
The present invention relates to design and development of a fixture for root base and tenon milling of steam turbine blades in one set up in horizontal milling machine as well as vertical milling machine with facility to orient the spindle in horizontal position. The developed fixture overcome the existing practice...
The locating fixtures (14, 15) for root and shroud milling operation
on HMC machines to accommodate all sizes tang height of new design steam
turbine blade consist of one root locating fixture (14) and one shroud locating
fixture (15). Both fixtures are fixed to the main fixture body (16) when the
locating pad (...
The invention relates to an integrated apparatus, to continuously monitor the load on the hanger rods supporting heat exchangers in a steam generator and the condition of main members of boiler structures, comprising one or many smart sensors (1) mounted on the suspension or hanger rods (2) supporting the heat excha...
A method to regulate steam temperature of a power generating boiler/ turbine by spray water means operable at low flow rate of steam, the method comprising the steps of - a memory element (A) is SET to allow opening of a spray isolation valve at predetermined conditions which includes - issuance of an open command, ...
An earth strip (18) continuous monitoring apparatus comprising a AC power source, a switch contact (4), a step down transformer for stepping down the voltage level, a four diode full wave bridge rectifier (9), a voltage regulator, an indication lamp (12), an electromechanical relay (17) with plunger arrangement, a c...
The invention relates to a device for purging inert gas into rotating tubes during
a process of gas - shielded butt welding of the tubes to eliminate root
oxidization of weld metal and the adjacent regions comprising a purging gas
spray distribution (8) located adjacent the weldable joint; a purging gas hose (7)
...
The invention relates to a high pressure isolation valves for drain/vent/pressure
relief and other similar applications comprising; a body or shell which
encompasses the fluid; the body made out of bar stock and welded to an
extension piece by a full penetration welding; the Body with an inlet drilled at
specifi...
The present invention related to an improved boring bar comprising of a length L1 for a diameter d1 and for a length B for a tapered diameter from d1 and d2. The taper is made matching to the holding mechanism of the machine. A passage for internal coolant flow is made by drilling at the center of the boring bar for...
The invention relates to a method for determining optimum cooling rate for
attaining toughness of hardenable steel during quenching treatment using Magnetic
coercive force technique comprising the MCF property of the material with toughness
property; linking the magnetic coercive force (MCF) value of a selected m...
1. An improved arcing chamber assembly for SF6 gas circuit breakers
comprising a first HT shield or shielding electrode (11), and a second HT
shield or shielding electrode (12) integrated to said insulated arcing
chamber (10); wherein a dynamic field electrode (7) is provided
between a first movable contact asse...
A method for minimizing noise produced at piling of steel tubes during cold rolling mill production process comprising steps of: receiving atleast a tube from the headstock (1) by a hinge joint mechanical arm (6) supported at support (5); sensed by load cell (8), that sends a payload change signal to controller (10)...
The invention relates to noise reduction equipment used in high capacity boilers;
the exhaust pipe of safety valve is inserted into the inlet tube assembly (01), the
diffuser assembly (03), which reduces the low frequency noise. The baffler
assembly, which comprises acoustic-fill (fibre glass wool) (07), fibre gl...
Various types of fluxes are used in electrode coating of shielded metal arc welding, submerged arc welding and brazing. A novel method for determining the fusion characteristics of the fluxes has been identified by using Heating Microscope. Various samples of the fluxes have been collected from the actual welding co...
A L-shaped common locating pad (A) having a ball stopper (F) for blade
for guiding and reference of the said blade is disposed in the system for
machining both left hand and right hand blades without changing the locating
pad (A). The said pad (A) has a common key (B) for reference of both left hand
and right ha...
The invention relates to operation of Bed Lance Burners in CFBC boilers and more
specifically to provide a simplified purge air system to Bed Lance Burners so as to
prevent the Bed material entering into the Bed Lance Burners. According to the present
invention (Fig 2, 3) there is provided a system, to provide pu...
The invention relates to an improved process for groove milling and step milling on root of 250 mw, T4-25 bar type steam turbine blade by clamping with a newly developed clamp.The arrangement comprises holding and clamping the blade by the device,locating the blade from the root side by support location and performi...
The invention relates to a device in a damper assembly for isolation of
boiler equipments during on-line maintenance, comprising : a gland plate
formed of a first material; a follower plate formed of identical material and
shaped corresponding to that of the gland plate, the follower plate being
disposed spaced ...
A linear Fresnel Reflector module comprising, reflector systems (1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i, 1j) mounted on the vertical support , comprising, frontal (2a), middle (2b) and rear (2c) frames, fixed on bottom frame (10a) and held by support frames (10b,10c); further supported by front mounting assembly (5a), m...
The present invention relates to a Device for Removal and Disposal of Coarse Ash from Pressurized Fluidized Bed Gasifier and this arrangement is capable of removing and disposing the coarse ash from the pressurized fluidized bed gasifier, reducing the gasifier total structural height by eliminating ash receiver and ...
A method for validating and reconciling measured process variables and estimating the unmeasured process variables, by means of a processor (184) configured to a storage device, for detecting, identifying and estimating for faulty sensors in a power plant at steady state, the method comprising the steps of configuri...
The invention relates to a device to measure the diffused reflectance of full size
(6" x 6") textured and AR coated silicon wafers forming solar cell comprising a
retractable drawer having at least one limit switch to control movement of the
drawer, a height-adjustable test table with black mat finish top surface...
The invention relates to design and development of a chemical cabinet to provide safe
and ventilated storage of chemicals.
The storage structure should be a sturdy and resistant to acids, solvent spill and rusting
with proper ventilation of fumes from chemicals and having maximum utilization of foot
print area w...
A method for depositing thin films comprising:
suspending pre-synthesized seed crystals to be deposited in a precursor solution,
spraying the said solution on a hot substrate to form a uniform, continuous and adhesive
film.
The invention relates to an improved edge preparation of water wall panel tubes
of boiler system, the improvement is characterized by comprising machined spiral
bevel gearbox (03); wherein an input for the gearbox is obtained through a drill
bit shank (02) welded on to the spiral gear shaft, an output of the gear...
The present invention relates to control of water level in a distributed water flow
structures, in particular in rivers with cascaded hydroelectric power plants, one of
the power plants assigned as the Master hydroelectric power plant.
A method for pre treatment of raw water for Reverse Osmosis application
comprising storing raw water in a tank and feeding the raw water from tank to
cartridge filter housing by means of a raw water pump for primary filtration and
feeding primary filtered water from tank to a module containing ceramic
membranes ...
The present invention relates to a commuator which has successfully overcome the
ovality problem which develops in the commutator of D.C. motor on account of
temperature rise, leading to spark over initially and finally to complete breakdown of the
machine. The subject invention discloses method to arrest the pro...
The invention relates to a method for controlling an increase in local temperature
of Clamp plate in a split-winding power transformer, the transformer comprising:
at least two different electrical windings formed of current conductors covered
with electrolytic paper, the windings being mounted concentrically ove...
The invention relates to an insulating nozzle to improve interrupting performance
of higher voltage circuit breakers, the high voltage circuit breaker comprising : a
socket contact assembly comprising a socket, an insulating shroud, and a
dynamic current carrying contact; a socket support covered by the insulatin...
A proximity sensor testing device for a Super Rapid Gum Mount (SRGM)
operation comprising: an input signal connector (4) crimped to pins A, B and C
connecting (19) means; a housing (6) mounted on the connector assembly; an
output signal cable gland (9) attached the said housing (6) positioned to review
an output...
An improved air nozzle device for enhanced level of air penetration into furnace
of a circulating fluidized bed combustion (CFBC) boiler, the device comprising a
plurality of secondary air injection nozzles disposed at different heights on the
side wall of the boiler to generate a penetrative jet of air (3) for c...
A method for eliminating blow-out blemish during hole machining of a work piece
formed of non-ferrous materials in a water jet cutting machine, the machine
comprising at least a work table, an orientable and movable focusing nozzle, a
source for supplying pressurized water jet, a mixing chamber with abrasive
par...
The invention relates to a method of replacing an existing journal spring assembly with a bearing-less spring assembly in bowl mills in an operating thermal power plant, the bearing-less spring assembly comprises a spring cup fitted on a journal opening cover by at least a first coupling device consisting of a hexag...
ABSTRACT
TITLE : ‘ A UNIVERSAL DEVICE FOR HYDRO TESTING OF DIFFERENTLY DIMENSIONED WELDED TUBE/PIPES’
The invention relates to a universal device for hydro testing of differently dimensioned welded tubes/pipes comprising at least four metal rods each having threaded portions; and one each side is adjoined ...
A method for enhancing the uniformity of plasma texturing of multicrystalline
silicon wafers comprising: subjecting silicon wafers to the step of texturing by
exposing of the said silicon wafers to SF6 + O2 plasma in a vacuum chamber.
The invention relates to an advanced back-corona control system to improve
efficiency of Electrostatic Precipitators, the system is configured to: implement a
time-delay process in which the time to disallow flow of current through dust
layer in collecting electrodes of the ESP is modified so as to allow discharg...
A device for drying/curing of screen printed patterns on silicon wafers in a
conventional drying belt furnace preventing the silicon wafers from direct contact
with the belt to eliminate contamination of the wafers comprising producing at
least three different types of segments by cutting a stainless steel wire a...
The invention relates to a non-contact method of making front and rear contact metallization in silicon solar cells by direct laser sintering of metal powders, the method comprising the steps of chemical etching of standard silicon crystal silicon solar cells; forming P-N junction of the cells; removing...
A Housing For A Thyristor Assembly Mountable On A Rotating Electrical Machine And Method Of Mounting
A thyristor assembly (1) of two disc type thyristors mountable on common heat sink (5)
and the entire assembly mountable on a rotating electrical machinery for power
generation. The assembly represents one phase of a 3-phase fully controlled bridge
rectifier circuit in the end application. The heat sink acts as A...
The present invention relates to an improved method of removal and replacement of oil seals in the journal housing cover upper (15). The method comprising incorporating two elongated holes on journal housing cover upper (15) and four tapped holes around the elongated holes to fix a slot cover (16) over the said hole...
Two cavity die is designed for producing a hollow blade nozzle. The suction side and pressure side of the nozzle are machined on left hand cavity (1) and right hand cavity (2) respectively. The root portion of the nozzle are provided on both the sides with additional blocks (3, 4, 5 and 6). Two cavities are formed w...
The invention relates to an improved receptacle mounting device for socket board of Oil Rig Power Control Room (PCR) comprising a plurality of socket mounting rings having two sets of threaded holes, a first set of holes for fixing
the socket mounting ring easily on the receptacle board by using screws from inside ...
The device (D) comprising a bottom support (1) for jacking facility, a screw housing cylinder (2) having its inside hollow, a screw type jack (3), a nut (7) fixed to the screw housing cylinder (1) having thread matching to the said screw type jack (3) and a rivet support (5) with spherical head. The screw type jack ...
The invention relates to an improved silencer for effectively reducing noise produced by AC motors with CACA enclosure while in operation, comprising a front plate (02) detachably attachable to a fan ducting flange of the motor
structure; a shaped wrapper plate (01) welded at one end to the front plate (02), a seco...
The invention relates to a method of dissimilar butt welding of shorter length tubes in bulk quantity for manufacturing re-heater coils for high pressure steam generators in a device, the device consisting of a base member (01) with a driving unit (02) on a first end and a matching tube holding unit (05) at the othe...
A device for endurance testing of cooling fan impeller of a traction motor with
variable speed up to 3000 RPM and variable shock load comprising a steel
structure having a main frame of steel structure and first end of the main frame is
provided with a drive motor with variable speed controller and the second end...
The invention relates to a common junction box adaptable to photovoltaic (PV)
modules to terminate the busbars of the PV-modules, the PV-modules having an
enclosing member a plurality of output terminals capable of being solderingly
connected at one edge to an electric cable of electronic devices via the junction...
A fixture for safe handling and transport of emergency valve and control valve
(ESV-CV) of 660MW steam turbine consists of a base made of I-section beams,
ten in numbers out of which five are parallel in horizontal plane and remaining
five intersecting them at right angle and are also horizontal. These I-sections...
This invention relates to an optical measuring system to determine the
temperature in a heat-exchanging apparatus of a steam generator, comprising
an optical sensing array (1) consisting of a plurality of temperature sensors
deployed within the steam generator structure (2), a reflector placed at a distal
end of...
The invention relates to a plasma sprayed ceramic coating process for
obtaining thick thermal barrier coating (TTBC) for protecting gas turbine (GT)
components (combustion liner, transition piece, etc.) disposed along the hot
gas path from high temperature oxidation of the base metal of the GT
components, the pr...
The invention relates to a method and a system for automatic configuration and
calibration of acoustic sensors employing acoustic sensors and an apparatus with
a wireless/ RF interface. The sensor has an energy harvesting sub-circuit, to
power up faulty sensor modules even when taken off-line while the apparatus
...
This invention relates to an electro-hydraulic converter for turbine
control in electro-hydraulic governing system of steam turbines
comprising of proportional valve, manifold plate, piston, casing and
position transmitter wherein the control signals from electro-hydraulic
controller operates on proportional val...
The invention relates to a canal top support device for mounting photovoltaic
solar panels of variable canal width, the device comprising: a first set of three
columns (1a, 1b, 1c) placed at a first side of a concrete pedestal, the height of
the columns (1a, 1b, 1c) selected to match the tilting angle of the sola...
The invention relates to a system to continuously monitor the profile of
refractory opening near oil burner in circulating fluidized bed combustion
(CFBC) boilers to identify parametric causes of clinker formation for taking
corrective measures, comprising : the system comprises a plurality of burner
throat pipe...
An improved spies valve for draining of ash in circulating fluidized bed
combustion boiler consists of a shaft (06), a lance pilot (11) attached to the shaft
(06), a cooling water inlet (08), outlet lines (09), seating block (07) when a rod
(12) is provided at the tip of the lance for disturbing the material in f...
The invention relates to a method of joining dissimilar diameter pipes without reducer in economiser headers of high pressure boiler used for Power generation. The method comprises of machining the outer diameter of header pipe (1) matching with the diameter of connecting link to be joined with the said pipe (1). Le...
According to this invention there is provided a process for generating producer gas comprising: Injecting a blast into the ash zone for preheating, introducing the preheated blast to the oxidation zone; heating the layer of coal to 1000° Celsius by using the heat liberated due to being of carbon; Introducing the bla...
The present invention relates to a welding torch for good visibility of hard
facing for welder, quality of the weld overlay and improved productivity by
minimizing the defect comprising a invented torch handle (1) end comprises a
hose with a copper tube for power and water (2), a copper tube for argon gas
(3) an...
The invention relates to a punch and dies, designed and manufactured for 2000T Press to bend the straight panel at helix angle varying from 130 to 200, to produce hopper/skew panel of any outside diameter ranging from 38.1mm to 42.4mm irrespective of tube thickness. A new method of manufacturing hopper/skew panels w...
The invention relates to a robotic welding of ventilation spacer bars on lamination
sheets of stator core in steam turbine generator adapting spot welding process
the method comprising providing a spot welding machine with a robot
having a programmable robot controller; generating a CAD model of ventilation
lami...
A fuel cell stack consists of multiple number of single cells each consists of anode plate, cathode plate and membrane electrode assembly (MEA). The MEA comprises of two electrodes between which the membrane is hot pressed. It receives hydrogen and air/oxygen from its gas distribution plates of anode and cathode tha...
The invention relates to a wireless interface device for controlling an operably
attached Electrostatic Precipitator and ash disposal system, the ESP having a
rapping mechanism to dislodge the accumulated dust from the collecting and
discharge electrodes, the rapping mechanism companying a rapping controller,
an...
Fluid cooled cyclone (2) is made up of plurality of tube panels and outer cross section of the cyclone is octagonal to accommodate the Panels. A circular ring header (6) acts as an outer for the fluid medium and is formed around the cyclone (2) outlet opening. Loose tubes (7) are connected to the header (6) stubs to...
A rapid synthesis process of CIS or CIGS precursor inks and thin film absorber
layers to produce an improved composition of precursor inks, the precursor inks
and absorber layers, comprising at least three of: copper, indium, gallium,
selenium, or a combination thereof, the process comprising the mixing copper,
...
A device and a method for lifting, alignment & tightening of threaded ring on inlet end of IP turbine inner casing comprising of body (1), fixed spindle (2), adjustable spindle (3), collared washer (4), lifting lug (5). The device provides support at 3 points on threaded ring outer dia (D1). Threaded ring rests on t...
The invention relates to a system for early detection of tube to tube sheet joint leakage in individual tube bundle of any surface condenser of any rating. The said system comprising a catch trough (2) disposed in each of four water chambers (1) for collecting the contaminated condensate (6) in respective water cham...
The invention relates to an automatic system for carrying-out TIG welding
process of Impellers of varying sizes and varying vane profiles at
controlled and continuous preheating conditions to achieve higher and
uniform material deposition, the system comprising : a TIG welding
system is having a rotary table, a ...
The invention relates to a method and apparatus for determining liquid
levels in vessels employed in steam generating plants and process
industries, the liquids being water or chemical solutions and vapor
produced from the liquid, the method comprising exciting a plurality of
sensors mounted at different levels ...
A device for accurate drilling of inclined holes in nozzle segment for hydraulic turning
gear of steam turbine comprises of a guide plate (1) having inclined hole H2 for guided
drilling operation when nozzle segment (6) is fixed with guide plate (1) by bolts (2). An
end plate (3) holds the guide plate and makes r...
The device for accurate calibration of anvils for outside micrometer
consists of a base (9), one fabricated structure (14) welded on the base (9) and
having a hole (11) for holding the anvil (8), another structure in the form of tube
(16) welded on the base (9) for holding a dial indicator (13). The two structure...
The invention relates to a device in an welding machine for welding of
bifurcate objects installed on power boilers, comprising: a holding means
configured into two segments, the first segment constitutes a movable V-block
assembly, and allows the U-tube to be aligned to the machine axis,
the second segment comp...
The invention is related to the method and process to avoid atmospheric contamination in autogenous laser butt welding of reactive materials like Titanium, Niobium, Vanadium, Zirconium and Tantalum. In the present invention, a suitable fixture has been designed and fabricated for achieving a clean weld in such react...
An improved system for flowability of material in cyclone of large capacity
Circulating Fluidized Bed Combustion (CFBC) boiler comprising a plurality of
cyclones attached on two sides of a CFBC boiler wherein the flue gas and
elutriated particles are separated and a plurality of air ports (14) at different
eleva...
The invention describes a precursor system to synthesize meso-porous silica
material having pore size in the range of 3 - 5 nanometer. More specifically, the
invention describes the specific formulation/s of the precursor system to
synthesize meso-porous silica and without using any conventional tri-block co-
po...
The present invention relates to standardisation of erection plate attachment sub-assembly which is used during assembly of 2nd pass panels of once through super critical boilers.
More particularly the present invention relates to an improved system and method for assembly of 2nd pass panels of once thro...
This invention relates to an automated welding system for bifurcate
welding, comprising a front end motor (4) a rear end motor (8); an irregular
shaped bifurcate object (27) held in a weld head assembly for welding to a
third leg, the third leg being placed in a movable clamping plate (6); a TIG
torch assembly (...
A device to protect contact pins of Turbo-generator rotor field current lead
during mechanical test run consists of a circular plate (c) which is provided with
holes (2) for snugly supporting the contact pins (6) assembled at the ends of
insulated current carrying field leads (5) fitted in the bore of rotor shaft...
A welding flux to achieve increased penetration in TIG welding of mild steel,
comprising: a paste consisted of a welding flux and acetone / industrial alcohol,
wherein the composition of the paste consisting of:
TIO2 : 10wt%
K20T102 : 7 wt %
Cr203 : 10wt%
Si02 : 73wt%
This invention relates to a fixture for facilitating chamfering of pipes
comprising of holding blocks connected with reinforcements constituting
a sub-assembly fabricated with a plurality of support plates.
The present invention relates to a device for and method of fixing stainless steel sleeve permanently over super heater and reheater coils used in circulating fluidised bed combustion boilers. The sleeve (10) through which a tube (09) is to be inserted for a shrink fit assembly is heated to a temperature of 700 – 90...
A new core flux test set up includes: 1) Two 100sq.mm supply cables for applying 6.6 KV direct supply from the grid to the magnetizing system. 2) 14 turns of 100sq.mm cables to be laid in the stator core constituting the magnetizing primary winding. 3) A box to keep all the cables and having a connection panel to co...
A device for pre-welding fit up of line pipes with a hemispherical dish end during fabrication of high pressure boilers, comprising a tilting base plate (2) to accommodate the Hemispherical dish end, the end being tightened by a clamping ring (1), which freely rotates on a rotatable guide channel (5), the assembly h...
A dial test indicator of the class described having comprising of taper sleeve (1) that gets inserted in the machine spindle so as to provide the complete device a 3600 rotation about longitudinal axis of taper sleeve (1); a main arm (2) assembles with the taper sleeve (1) through a threaded connection using threads...
A carrier to hold atleast a silicon wafer used for a solar photovoltaic cell, the carrier of H-shape, wherein the one half of the ‘H’ shape design comprises of plurality of slots to receive the silicon wafer, wherein the lower edges of the carrier are extended inwards wherein the other half of the H-shape forms the ...
The present invention is provided with a device for holding the tool adaptable to
pipe chamfering and edge preparation machine comprising a first cylindrical base
plate (1) and the front face of the base plate is provided with clamping means
with front face of the machine and an extended horizontal oriented Y-sha...
A workpiece adapter (6) is provided on a double spindle 5 axis machine to reduce the
clamping allowance of blanks of turbine blades when a locating centre pad (4) is bolted on
the adapter (6). A tapered locating pin (5) is disposed in the tapered hole of the locating pad
(4) to locate the blank and to restrict th...
The invention relates to a built-in device for a portable end chamfering machine to prepare the welding edges of tubular products transferring saturated steam in power plants, the device comprising a plurality of clamping jaws (01) having at least two legs (04) and vertically movable in opposite directions; a plural...
A device for multi channel sensor live data cable conduiting of blade vibration
monitoring system consists of a canister flange (1) and a canister plate (2) assembled to
form a canister assembly (8) and is welded to the casing. The Canister (8) is supported by
a plurality of support brackets (11). The canister pl...
The invention relates to a high efficiency electrode with coating thickness/core
wire thickness (D/d) more or equal to 2 containing major quantity of iron powder
in the base coating of low hydrogen electrode, exhibiting UTS of 518 mPa tensile
strength after SR of 300 min at 625 deg Celcius, and an all weld CVN im...
The invention relates to a rolling device for unrestricted welding of stator frames
by converting the welding from 5G, 4G, 3G position to 1G position, comprising at
least a pair of metal rings (2), each ring (2) disposed at proximal and distal end
of a stator frame (3) of a turbogenerator; at least two pairs of p...
The invention relates to a purging apparatus assembly to prevent contamination
of weld joints during welding of thin-welded titanium tubes in intricate positions,
comprising a titanium tube for welding over a plurality of unions on at least two
collectors; a split type purging enclosure having a lock plate, a bas...
The invention relates to a method of profile machining of high thickness pipe
material to fabricate elbows used in high pressure steam generators, the method
comprising the steps of placing the elbow between top and bottom "V" blocks and
positioning with top clamp screw and 45 deg angular bottom clamp screw. The
...
The proposed supporting structure to the particular solar photovoltaic module
supporting structure adopted in solar power plant comprises of three frames at a
particular interval which are non-symmetrical arranged in longitudinal direction.
Each frame constitute of one elevated rear strut and another small front ...
An improved oil sealing device adaptable to auxiliary generators of a traction
alternator of diesel electric locomotives, the traction alternator connected to the
diesel engine such that the electrical power produced being fed to the traction
motors for the loco drive, wherein a plurality of auxiliary generators ...
The on-load tap changer adaptable to power transformer have
four nos. vacuum interrupters (1V, 2V, 3V and 4 V) which act as
diverter switch. There are two no shunts (1S, 2S) which are
moving and the movement are done by shunt switch triangles (1T)
which is mounted on a vertical shaft (10). 4 no cams (1C, 2C,
3C...
The present invention describes a process and a system for coating membrane layers
on multiple single or multi channel micro porous ceramic support tubes simultaneously
is provided. The invention comprising the steps preparing various membrane forming
slurry and sols and a process and system for coating multiple ...
A device (A) for clamping of steam Turbine blades T4/Tx type to undertake
chamfering operation in single setting comprising:
a machine table (03);
a plurality of clamping stand (01) erected vertically on the base (03) by clamping
screw(05);
a plurality of wedge plates (02) having slit in it are fixed on vertica...
The invention relates to an improved process for milling of small fillers for
600 MW turbo-generator Rotor Coils and the improved fixtures for the same. The
process comprising dismantling the jaws of the machine vice to mount a fixture (F) on
the machine vice in both sides. The fixture (F) is clamped to the sides...
A method of preparing a fused alumina basic welding flux comprising the step of:mixing an effective amount of SiO2, Al2O3, CaO, MnO, MgO and TiO2 and optionally CaF2; subjecting the said mixture to the step of drying and arc melting in a furnace,granulating the molten flux to a desired grain size of 0.2 mm to 1.5mm,...
A Self Adjusting Pad System And Method For Radius Milling Operation Of Root And Shroud Turbine Blade
The invention relates to an attachment (A) used in a fixture for radius milling
operation of root and shroud of turbine blade. The attachment consists of a plurality of
angle blocks (1) bolted to the fixture base, a changeable base plate (2) is bolted on the
angle block, an angle adjustment system holder is fixed...
The a process of producing a hard face on a very thin but large diameter
stainless steel vessel maintaining stringent dimensional requirement on the hard
faced ID section. Plasma transferred arc welding (PTAW) process is employed for
depositing the hard face material on to the SS vessel. For effective bonding of
...
The invention relates to a device for inspecting a PV module at the final stage,
comprising: a digital voltmeter enabled to measure D.C. input at the range of 0
to 999 volt; a power source for supplying 230V, AC to the voltmeter; a neon
lamp operable under 230V, AC input connectable to the voltmeter, the neon
la...
A device for setting the calibration sensitivity level of an ultrasonic testing
equipment and probe combination, comprising :a first tube welded with a second
tube with a fusion face to form a single block; the first tube comprises at least
one flat bottom hole acting as a reference reflector, and at least one si...
A device for measuring cylindricity of 250 mw, 500 mw steam turbine, high (HP),
intermediate (IP) and low pressure (LP) shafts and turbogenerator rotor shafts
consists of an inverted 'V' shaped block (1) having two holes (5, 2) in the middle
of the block perpendicular to each other for holding a dial gauge (6) ti...
A device for mounting a swing door on the frame of control equipment panel for
power plants, comprising at least one hinge bracket made of steel material and
constructed with bends on two opposed surfaces; a hinge tube made of bright
steel bar having two flattened side surfaces, the hinge tube constructed with a
...
The invention relates to an improved DC Traction system of Air Conditioned
metro Trains, the improvement is characterized by comprising: a high speed
circuit breaker (HSCB) providing protection against developing fault in power and
auxiliary circuit; at least four nose suspended, self-ventilated traction motors,
...
The invention relates to a device for direct verification of digital read outs of
current and voltage in a welding power source, the device houses two Shunt
(Measurement (Sh1) and Control (sh2) circuit Reference purpose), a Load bank
(08), one each Digital reference standard Ammeter and voltmeter, plurality of
C...
The invention relates to a device for homogeneous heating of coiled tube bundle
component (1) comprising a shroud (2) which holds the coiled bundle, at least
one resistance heating coil (3) which is used for adding finer heat input to the
coiled bundle from a power source (6), a coil holding shroud (4) used for
...
The invention relates to a semi-mechanized process of cleaning tubes in a
procedure of titanium tube to tube butt welding, the process comprising the
steps of manually cleaning the inside and outside surface of a titanium tube;
providing a mechanized cleaning device having at least a cleaning tool, a body; a
plu...
In the present invention, there is provided a ceramic liner having high wear resistance and good thermal shock resistance, and the method of manufacture of ceramic liners for wear resistance applications at high temperature. According to the present invention, there is provided a method of manufacturing ceramic line...
The invention relates to a uniaxial spherical bearing device for structural load monitoring of ESP hopper, comprising a uniaxial spherical bearing converted to load cell and at least two pairs of strain gauges disposed at 180 degree apart on a circular ring for measurement of strains, wherein a tapered groove is con...
The invention relates to an improved three phase Gas insulated multi-port bus bar module to inter connect the modules of three phase electrical power systems comprising at least three bus bars [01] terminated with shields [05], and HT integrators [04] disposed in equilateral triangle or right angled or any other ang...
The invention relates to device for testing thermal shock resistance of ceramic refractory liners in a metal assembly by subjecting assembly to a cyclic temperature to elevated temperature comprising a base assembly for holding a test piece; a top assembly with heating elements; a blower arrangement for fast cooling...
The invention relates to a device for manufacturing of Axial Profile Fan,
comprising a drill jig (01), a first hole locator (02), a locating pin (03) and a
guide pin (04) all of which being assembled in an impeller hub, the locating
pin (03) is enabled to locate the drill jig in registration with the impeller
co...
The invention relates to a brushless Excitation System, a rotating rectifier
assembly comprising a rotor spider assembly mounted on a shaft, a plurality
of rectifier modules disposed on the periphery of the spider plates of the
spider assembly, a rectifier module comprises a diode heat-sink assembly and
a R-C as...
The invention relates to a universal device for measurement of rhomboid angles
of T-root blades of steam turbines to determine Co-parallelity of root radius of
the blades comprising a main block (1) having a second screw (8) including
a hexagonal nut (6), and accommodating the steam turbine blades; a first and
s...
A jig for SODIMM module solder paste printing is made of PRBCF material. It
comprises of a shallow recess (2) having a depth of 0.8 mm and made to suit
the shape of the PCB; middle support (3); a plurality of Teflon support stems (4);
a plurality of locating pins (5); and two deep grooves (6) at the two ends of t...
An improved sweep gauge with a lead screw (6) consists of a cylindrical pillar
(1) fixed to the floor (2) at the center of the core and an arm (3) is attached to the
pillar (1). The central pillar (1) houses a lead screw (6) connected to a motor (10)
through a gear system. The direction of rotation of the motor (...
A Device for Cooling Ash in Pressurized Fluidized Bed Gasification Systems,
comprising: an outer shell (09) acting as a water jacket; an inner shell (10)
accommodating the ash and cooling water tubes (15) to form a part of the ash
path; a cone shaped perforated sheet (11) with a cone angle, and a hole
diameter w...
A device for remote engagement and disengagement of barring gear of steam turbine in which a manifold called as intermediate piece (2) connects the ports of servomotor with the solenoid valve (13). An intermediate piece is fixed in the location using 6 nos. M10 (3) screws with the servomotor. A gasket (1) is install...
The invention relates to an improved process on CNC lathe machine with an improved tool insert to reduce the process time for finish machining of bottom diameter of Blade grooves in rotor shaft of steam turbine, the process comprising: producing an liner with improved cutting geometry; selecting cutting parameters o...
A method for increasing efficiency of an IGCC power plant, the IGCC power plant comprising a gasifier a steam turbine, and a HRSG, the method comprising: avoiding extraction at HPT/IPT/LPT and generating solar heat in a solar collector field; avoiding extraction at HRSG and generating solar heat in a solar collector...
The invention relates to an apparatus for joining of heavy thick plate/pipe
with a motorized narrow gap torch for submerged arc welding process to an
extent of ±15°. Joining of high thickness components is done using SAW
process. Different joint designs used in the SAW process demand different
torch designs for ...
The invention relates to an apparatus for manipulation and control of
the movement of the narrow gap torch to an extent of ±3°. Joining of
high thickness components is done using SAW process. Different joint
designs used in the SAW process demand different torch designs for
optimal utilization. A narrow gap torc...
A method of plugging holes created on a product welded in a friction stir welding
machine, comprising the steps of: providing a first plate (4) over a second plate
(5); welding the plates (4,5) to form a T-joint in a friction stir welding process
adapting a friction stir welding machine having a tool pin (1), the...
A fixture for safe road transport of emergency stop valve and control valve is having a base structure made of 5 Nos. ‘I’ shaped beams (01) kept in longitudinal direction and 3 Nos. ‘I’ shaped beams (02) kept in transverse direction. ‘C’ shaped channel (04) is provided along with transverse beam for providing extra ...
A combination of welding wire and welding flux for submerged arc welding of high strength steel having ultimate tensile strength (UTS) of 600 MPa. The wire consists essentially of 0.08 wt.% carbon, 1.5 wt.% manganese, 0.51 wt.% Molybdenum, 0.051 wt.% silicon, and balance iron. The flux used with the wire is aluminat...
The invention relates to a multi-fuel wall burner apparatus to fire pulverized solid fuel particles, liquid fuel, low calorific value gaseous fuel and high calorific value gaseous fuel simultaneously or in combination or a single fuel alone except a low calorific value gaseous fuel, for electric power production, co...
An improved method of modifying a slip ring induction motors (SRIMs) to operate under variable frequency drive (VFD) applications, the improvement is characterize in that: eliminating the slip rings and brush gear assembly from the SRIM; and mounting a copper shorting ring on the rotating motor shaft to short-circui...
The present invention relates to an insulator for a gas insulated device with three
high voltage conductors accommodated in a single insulator. The invention
further relates to an insulator device with metallic bushes disposed within the
body replacing the metallic ring. The invention further relates to a method ...
In this invention, liquefied petroleum gas stored in pressurized vessels is gasified using a solar thermosiphon vaporizers. The apparatus comprises of a set of flat-plate solar thermal collectors and a separator. Cold potable water from a reservoir is fed into the separator of the apparatus. During the heat transfer...
The invention relates to a method of safe guarding a guiding disc from developing crack during power failure in a process of tube manufacturing, the tube manufacturing process implemented in a cross piercing elongation system having at least a split type accumulation respectively filled with nitrogen and oil in top ...
The present invention discloses a microwave assisted synthesis method to
prepare nano (20-100 nm) and micro (1-5) μm copper calcium titanate
(CCTO) powder. CCTO synthesis is performed by an oxalic acid solution
precipitation method, which includes microwave heating (120-210 °C) of non-
explosive, hydrate/di-hydr...
The present invention is provided with a track changing device on a Monorail
Track for multi aisle Automatic Storage and Retrieval System (ASRS) comprising
a movable base plate (1) embodied with a segment of straight rail (2) and a
segment of curved rail (3) which are placed at a defined distance apart, disposed
...
The invention relates to a method simultaneous chamfering of top and bottom plates
used for fabrication of carrier plates and plug plates weldable with headers of high
pressure super critical boiler and sub critical boilers, comprising the steps of providing a
plug cutting machine (1) having at least one first to...
The invention relates to an improved water pre-treatment system operable
under recirculation technique to reduce wastage of ultra filtered water in a
pretreatment process of clarified raw water, the system comprises an ultra
filtration (UF) unit operably connected to a Reverse osmosis (RO) unit which
interlia co...
A modified automated test equipment (ATE) system to validate parameters of an electronic controllers (EC) for an electrostatic precipitator (ESP), the said system comprising: a power supply unit (1); a linear power supply circuit (2) to simulate main frequency Thyristor based linear power supply; a switch mode power...
When the STATCOM is designed based on diode clamped three level converter, to compensate unbalanced loads, the problem of neutral point voltage deviation has to be addressed to avoid unequal distribution of dc link voltage between top and bottom links. The present invention mitigates the neutral point voltage deviat...
The invention relates to device for dynamic torque measurement of pulverizer drive shaft in a telemetry system, the telemetry system comprises at least two strain gauges detachably attached to the shaft under measurement, a telemetry transmitter connected to the strain gauges by wires such that the transmitter actin...
The invention relates to an optimized and standardized two legged trestle for supporting conveyor galleries at lower elevation in coal handling plant,comprising: a braced single frame with two legs placed at spaced apart locations; the single frame having two legs connected with a plurality of horizontal as well as ...
An improved master former device (D) comprising of an alloy steel block having a profile at the middle for producing the same profile on the blade. The said block (D) is having a total length of 120mm, width of 40 mm and height of 43 mm and thickness ‘T’ on one side is made of 5 mm for making required external fille...
A surface coating material for acoustic attenuation equipments comprising:
a bilayer structure having a base-coat and a top-coat.
The invention relates to a method of fabricating a device to restrict ash build-up beyond a threshold level in the hoppers, comprising fabricating a shear plate (1) with material having yield strength and Young modulus values lower than that of the material forming the hopper walls (3); providing a strain-gauge box ...
The invention relates to an improved Roebel transposed bar for stator windings
of turbogenerator, comprising (i) DAGLASS copper strips in two halves(22,23);
(ii) Transposition surface filler with FOM micanite putty (13); (iii) Main ground
wall insulation with resin poor mica tape (14,17); and (iv) Outer corona
p...
The invention relates to an apparatus for leak-proof sealing of producer gas during idle time in a pipeline, the apparatus comprising : an U shape pipeline introduced at the inlet of furnaces and having a provision for a water inlet pipeline with valve, a water overflow pipeline with valve, and a water drain pipelin...
The invention relates to an integrally forged rigid support device disposable
between the tube elements sustaining harsh operating conditions prevailing
inside the fluidized bed combustion boilers, comprising a vertical forged hanger
block (1) weldably connected to a vertical hanger tube suspended from the roof
...
A method for coating hydro turbine to protect it from degradation comprising:
preparing the surface for grit blasting for HVOF coating followed by laser surface
treatment in controlled atmosphere and subjecting the surface for surface
grinding of the coating, the combinations of these processes improve significan...
A method for correcting an increased taper diameter developed during machining
of a guide blade carrier, the correction of the over-sized diameter enabling
achievement of a desired radial clearance between the stator and rotor blade
rings in a gas turbine, the method comprising the steps of enlarging the over-
s...
The invention relates to an automatically reorientable solar thermal sun Tracker
for tracking the Sun from morning to evening to produce increased power output, comprising a supporting structure consisting of one each top, middle and bottom portion, the top portion formed of a panel fixing frame detachably
attachi...
The present invention relates to a shipping device for safe transportation of over dimensional main pedestal housing assembly of Regenerative Air pre heater for pulverized fuel fired boilers, the air pre heater comprising a flue gas sector and one or more combustion air sectors which are divided by a plurality of se...
A system for removal of bottom ash from pressurized fluidized bed gasifier comprising: (a) a plurality of ash extraction pipes (06) located at various points of a distributor (03) for removal of bottom ash from the Pressurized Fluidized Bed Gasifier (01) at controlled rate, wherein the ash extraction pipes (06) can ...
The invention relates to an improved hot wedge press system for conductive strip attachment during solar cell integration process, comprising a pressing unit operable by a pneumatic cylinder, the pressing unit having a plurality of heaters with heating shoes, several pressure pistons corresponding to the number of s...
The invention relates to an apparatus for manufacturing of defect free damper blades for the damper assembly used in thermal power plants, the damper assembly comprising at least a set of damper blades each of the blade having two blade blocks at both ends to accommodate the rotating shafts and truss plates are pro...
The invention relates to an method of integrating IEC 61850 communication protocol with a phasor measurement unit, comprising the steps of time synchronization of the internal clock with 1 PPS signal [312]; accessing wired field data from a plurality of current and voltage transforms as analogue inputs in real-time...
The invention relates to an improved damper device for isolation of associated
equipment in boiler during on-line maintenance of fans and air pre-heaters, the
improvement is characterized in that the device having a drive mechanism
comprising at least one lever boss, a drive and/or a lock lever, the drive and/or
...
Improved three dimensional blades consist of 3D air foil, root and shroud for axial flow steam turbine, which can withstand the thermo-mechanical stresses at higher temperature and pressure, comprising: Two dimensional air foils with leading edge (28) with inlet metal angle (15); leading edge radius (10) and leading...
A motor driven gear pump is disposed in the arrangement to suck oil from the lower
reservoir (22) to upper reservoir (23) upto a certain level before the turbine starts. A low
level oil scraper pump (9) is installed at a very low level to suck oil just above the mounting level of the bearing shell (01). This oil l...
The invention relates to an improved apparatus for making a circular weld on heavy thick plates in a dual torch submerged-arc welding process, the apparatus comprising symmetrically arranged dual torches disposed on a horizontal, extendible and contractible boom, the boom being supported in a vertical support member...
an improved process for internal shroud fillet milling of bar type steam turbine
blades of rhomboid shape with a new clamping method comprises of removing
old hydraulic cylinder (5) of prior art from the root end (9), fixing a new
hydraulic cylinder (8) at the shroud end to actuate a clamp (1) to clamp the
blade...
The invention relates to the solar assisted open well water pumping setup along with a small hydro turbine can develop a sustainable energy technology, which eliminates batteries from solar photovoltaic power system and also effectively utilize the depth of the open wells. In this configuration, when solar power is ...
The invention relates to an improved process for ATIG welding of carbon steel
grade high wall thickness tube to tube to produce part components in boiler
system, the process comprising the steps of tack welding of the tubes after
fitting the tubes without any root gap, providing ATIG flux in paste form using a
b...
The invention relates to a multifunctional mechanized device for welding of curved profiles, comprising : a linear track allowing a linear motion to a carriage head at a pre-determined speed, one end of the carriage head provided with a rectangular plate; a hollow-tube (4) fillet welded with the rectangular plate wi...
A device for enhancing machining capability of a manufacturing machine capable of performing facing operation through distribution of machining loads, comprising a flange (1) having a stepped Collar (6) that would butt with the machine headstock (8) on the headstock joint surface (7) in such a way that the fixture c...
The invention relates to a process of plating silicon solar cell front contacts in a light induced plating system with improved jig device the improved jig device comprising a solar cell jig capable of dual mounting of solar cells with titanium connectors for biasing the rear side of the cells; a light source capabl...
An automatic material tracking method for tracking materials enclosed in a package,
which may be metallic materials, the said method comprising the steps of: assigning
RFID tag to each material; enlisting the plurality of material, assigned as first list;
packaging the plurality of material each comprising the RF...
The invention relates to a welding procedure with optimized welding parameters to produce defect-free dissimilar metal weld joints of thick sections of Alloy 617 (ASME 2439) and stainless steel 304H Cu(ASME 2328-1) for Advanced Ultra Super Critical Power Plants comprising the steps of an edge preparation of the join...
A method of evaluating high temperature oxidation resistance in base and weld materials comprising: preparing a specimen having base, weld and synthetic fly ash; subjecting the said specimen to the step of gravimetric measure and dimensional measurement, measuring the temperature exposed by the specimen and syntheti...
The invention relates to a method of modifying a bi-drum boiler to achieve higher superheated steam temperature, the bi-drum boiler comprising two drums (1A, 1B) connected with a bank of tubes (8) and plurality of superheater coils arranged within and outside the furnace, the tubes (8) forming a part of an evaporato...
The invention relates to A composition of basic low hydrogen iron powder-type
coating depositing high strength bainitic weld metal with a higher deposition rate
consisting of:
SL MATERIAL WT% RANGE PREFERRED
RANGE
1 CALCITE POWDER 7.5-15 12.5
2 FLOURSPAR 7.5-12.5 10.0
3 RUTILE/TITANIA 2.5-7.5 7.5
...
The invention relates to an orbital type apparatus with cam device supported by
a laser vision sensor based seam tracking means for welding of a stub to a
header in a boiler system, the apparatus comprising a mounting assembly (4)
having a cross slide and one each weld head assembly on both sides i.e. (right
and...
A fixture for making small fillers adapted in the manufacturing of Rotor Coils of
600 MW turbo generator sets consists of a block having a plurality of slots for
accommodating the slitting cutters mounted on the machine for cutting the filler
rods on one side of the block, a locking plate is fixed to act as a sto...
The invention relates to a device for portable incremental metal tube end
flaring in straight end of tubes. To facilitate clamping, sets of clamp pads were used.
A compact base plate was provided to house the powered cylinder and to facilitate
axial movement of drift pins. The flaring set-up was coupled to the ba...
A measuring device for measurement of "V" groove wall thickness of impeller disc
of compressor comprises of a vernier scale of a old vernier caliper having the two
original jaws welded with 12 mm square rod of 100 mm length for making an
extended jaw when an anvil and a spindle is brazed to the jaws to facilitate...
The invention relates to a device and method for aligning the Inner casing
with respect to Outer casing for HP/IP module steam turbine where there
exists a close dimensional clearance between the blades and outer casing.
The device comprising a block body (2), supported between an eccentric
bolt (7) and holding ...
A method of developing erosion resistant hard layer on 13 Cr-4Ni Stainless Steel
components comprising placing the turbine component in plasma ion nitriding
equipment for carrying out plasma, nitro carburizing process in the presence of
H2, N2 and C2H2 gases at a temperature range of 575-585°C and pressure in the...
The invention relates to a method in a protection apparatus for protecting a
synchronous generator (1) from an unrestrained asynchronous operation while the
generator is delivering a load to the system, the generator comprising a stator winding
(2) on a stationary part of the synchronous generator, and a rotor wi...
The invention relates to a non-destructive method of measuring thermal diffusivity of a coating on
at least three metal substrate samples with the application of a constant heat flux on the metal
substrate samples, the method comprising providing a first constant heat flux on metal substrate;
measuring the therma...
The invention relates to a method for accurately measuring weld
reinforcement of butt welded joints of titanium tubes forming a heat transfer
area in once through steam generators the device providing an automatic
TIG-welding machine enabled to carry out one or more butt joints of
titanium tubes to form tube bun...
A Process For Producing Alumina Grinding Media Balls For Coal Pulverization In Thermal Power Station
The invention relates to a process for producing high impact resistant ceramic
balls which are suitable for coal pulverization in thermal power stations. The
process is based on the application of equal hydrostatic pressure technology
which is capable of developing maximum fluid pressure of 1000 Kgs/cm2 and
prod...
The Improved Syngas cooling system with ease of maintenance in Pressurised Fluidized
Bed Gasifiers, comprising; a gas inlet chamber for hot syngas entry, a plurality of
smaller diameter tubes attached to top and bottom tube sheets to form as single
bundle, enclosed by a pressure vessel which is having feed water ...
The invention relates to an improved three phase shunt unit for phase shifting
transformer with independent tapping winding with ±100% tapping range, the
phase-shifting transformer essentially consists of Low-voltage windings, tap
windings, high voltage windings, Intermediate voltage windings, terminal gear for
...
The invention relates to a method of forming an optimized tube nest layout for compact single pass condenser to achieve uniform steam flow distribution and equalized pressure drop across different tube bundles from all directions around the tube nest; the steam condensor condenser comprising a steam inlet (9) throug...
The present invention is provided with an improved Planet Carrier adaptable to
Planetary Gear Box (PGB) for vertical spindle bowl mills comprising an inverted
"T" shaped body (1) having a round shaped top flange (2) and an integral stem
part (3) disposed perpendicularly on the top flange (2) and the inverted "T"
...
The invention relates to process of fabricating additive-modified epoxy resin cast body with targeted level of flame retardant and low smoke properties for high voltage insulation application comprising the steps of synthesizing nanostructured alumina additive material, having a tap density in the range of 0.2 – 0.3...
The invention relates to an axis shift distortion measurement system to measure the distortion induced during circumferential welding on a large thick-walled circular shell component of pressure vessel, comprising : a frame member (6) enriching a first and a second cylindrical shell (1 & 2) to be welded in an weldin...
The invention relates to an intra-clamping device for attaching PV modules for
rigid mounting of the clamped PV modules on mounting structures, the device
comprising a shaped retainer member (10) having at least six connecting
members (11,12,13,21,22,23) attached to one each vertically extended member
(14,24) at...
An angular winding machine for manufacture of bristle pack to build brush seals consists
of a mounting frame (1), a plurality of bobbins or wire spool attached to a vertical frame (27)
of the mounting frame (1) for carrying and unwinding the wires (18). The wire spool
(7,8,9,10,11) assembly consists of a bobbin s...
The invention relates to a method of welding of narrow groove of main base and inlet neck in the manufacturing of electromatic relief valve comprises of following steps fixing the tack welded assembly of Main base (01) and Inlet neck (02) in the SAW machine (07) provided with a tiltable hole positioned; feeding a co...
The invention relates to an apparatus for end cutting of tubes delivered from a furnace after stress relieving and prior to edge preparation to produce panels of superheaters and reheaters in high pressure boilers, comprising a base plate (05) mountable on the panel top with at least two “C” clamps wherein linear m...
The present invention relates to a single block mechanical drive device for dual axis solar tracking systems comprising a first drive causing a vertical movement of a PV module attached to the solar tracking system corresponding to the position of sun for receiving solar ray incidence; and a second drive imparting h...
The invention relates to a device for holding and insertably
assembling high temperature superconducting (HSTC) coils around
the limb of HSTC transformers, comprising a substantially circular
shaped bottom plate (4) having a central hole (9), a first surface of
the bottom plate (4) provided with a plurality of g...
The invention relates to a IEC 61850 compliant Merging Unit [106] with 1 PPS
time synchronization, comprising a power supply module [202]; a processing
module [205]; an analog input module [203]; a digital input and output module
with optical- to-electrical converter [204]; the unit is enabled to implement a
pre...
The invention relates to a fixture for hydraulic testing of emergency stop valve (ESV) and control valve (CV) comprising: a major plate (9), a minor plate (10) having a projected portion (1) with surface level 1(B) and a stepped down portion (2) with surface level 2(A) having plurality of grooves (5,6) for accommoda...
The invention relates to the permanent magnet machines have a wide variety of applications because of advantages like more efficiency, high power density etc. In constant power and variable speed applications demanding wide range of speed, a large demagnetizing current is required to weaken the permanent magnet flux...
The invention relates to a method in an apparatus for selecting, transporting and inserting a pressing rod the pressing tool of a pressing machine to do the bow correction of long headers comprising the steps of moving the apparatus near the stored tool stand and selecting a pressing rod, picking up the selected pre...
The invention relates to a device for generatirtg an uniform flow
distribution from the boiler header to each boiler tubes including the
tubes located in the dead-flow zone in a boiler system, the device
comprising a baffle plate disposed at a center of the boiler header
and perpendicular to inlet flow direction...
The invention relates to an improved gas fired duct burner for efficient
combustion in Heat recovery steam generator, the improvement is characterized
in that at least one reconfigured baffle plate is rigidly fixed on a dummy header
of the duct burner assembly disposed in the heat recovery steam generator
(HRSG)...
A fixture and a method for setting up a job on the fixture for machining the field lead core bar of a turbo-generator up to 800 MW capacity comprising a base plate, core clamp, fixed & supporting segments, angle plates, L-Block, Plurality of welded blocks, clamping plates, block for angular milling, alignment & fixi...
A catalytic combustor unit comprising a metal cell (C) having a top dome (13) and
lower dome (15) and a cylinder (6). The said cylinder (6) is connected with said domes
(13,15) by top (7) and bottom (8) flanges. The flanges (7,8) are tightened by nuts and
bolts (9) for avoiding gas leakage. A silicon O-ring (10) ...
The invention relates to a device to hold a magnetic hub forging for large size exciter while performing on it slotting, drilling, and tapping operations comprising a plate (1) forming the base of the device and having a plurality of holes (9) through which the base can be fixed on any standard machine bed having T-...
The present invention relates to a tooling set up for achieving high accuracy in locating axial holes on field lead core bar in TG/Exciter rotor of large size turbo generator. The arrangement uses a set up comprising plurality of stepped bushes (1) with intermediate plate (10). The intermediate plates have 4 central...
The invention relates to micro steam back pressure turbine drive device to
operate boiler water circulation pump in forced/controlled circulation steam
generators to improve efficiency of the steam generators. There are minimum
three numbers of boiler water circulation pumps [BWCP] to assist circulation of
water...
The present invention relates to an improved condensing system with three surface condensers welded to Low Pressure (LP) turbine of 700 MW unit nuclear turbine to condensate 100% steam after expansion from turbine. The surface condensers are supported by a series of spring support assemblies at the bottom. The said ...
The invention relates to an automatic defect recognition system for real time
radioscopy (RTR) of straight tube butt welds, comprising a constant potential
mini-focal X-Ray equipment, a swiveling device, a digital flat panel detector
(imaging device) capable of acquiring and processing digital X-ray images, a
di...
The present invention is provided with an apparatus comprising an alternator
(02) of per pole per phase distributed stator winding wherein the complete
wound stator undergoes vacuum pressure impregnation; a companion alternator
(005) merged with auxiliary alternator having plural sets of winding for variable
vol...
The method comprises of arranging the nozzle for supplying
nitrogen gas over the workpiece at a predetermined distance in off-axial angular
position and then supplying nitrogen gas at a predetermined flow rate to stabilize
the austenite phase in the weld and to achieve plasma suppression when
welding is carried ...
A portable device and a method for grinding irregular welded butt joints comprising a motor (04) with a shaft, a pair of driving/ driven wheel (01), grinding emery belt (03), connecting the driving/driven wheel (01), feeding handle (06), adjusting vertical movement of the machine towards the work piece (12), adjusti...
The invention describes an improved hydrothermal process for synthesizing
crystalline ZSM-5 material, importantly without using any organic template
material in the process and also avoiding any calcination reaction (heat
treatment) in the process besides achieving lower duration of chemical reaction.
...
The invention relates to a system for mounting or dismounting of heavy-duty circlips over circular components of oil-field equipment, comprising ; a central rod (1); a non-rotating cylinder (2) slidable on the central rod (1), and having an ear configured with left hand internal thread for accommodating a L-H screw ...
The invention relates to an improved device for simultaneous monitoring and
multi-level control of electrostatic precipitator controllers assigned to multiple
boiler units comprising a central processor capable of executing the
instructions contained in a soft-ware structure for receiving, processing
received da...
The invention relates to n improved process of a deeper penetration welding of stub to header joints for high temperature and high pressure applications like boilers and reducing the weld cycle time, the improvement comprising the steps of adapting a deep penetration mode to weld in stubs with a short arc weld havin...
Development of universal clamping fixture (11) for clamping of freestanding
blades of low pressure steam turbine for tip milling during fir tree root machining
on CNC horizontal machining centre comprising a fixture block (2), a blade profile
resting pad (3) is mounted on the fixture block (2) with plurality of d...
The invention relates to An Arc type LPG fuel burner with high burning
efficiency and high flame stability for open flame preheating in pipe
headers, the burner comprising: An arc profile Burner head (06), a Brass
injector assembly (02) where the LPG fuel is being injected, a Venturi
mixer unit (04) for proporti...
The invention relates to a quick closing device in a cold reheat line connecting a high
pressure turbine to a Reheater, the device comprising: a body (001) which
encompasses a steam supply circuit in the turbine; the body (001) having an inlet
aligned to an inlet piping from the turbine, and an outlet uniaxial to...
The present invention is provided with an improved chimney type turret for ultra
high voltage line lead and bushing adaptable to high capacity transformer
comprises one rightly mounting circular flange in the tank wall of transfer; one
cylindrical right angle shaped lower part with support in base; one vertically...
The invention relates to a system for detection and prevention of failure of station transformer with multiple secondary windings, due to overheating of core clamp plates under unbalanced load conditions, comprising : a protection module having : at least three fibre optic sensors disposed on each of the core limbs ...
The present invention is provided with an improved device for locking of Jaws on
a CNC-facing lathe for machining of longer and heavier components comprising a
cylindrical pin disposed on central part of the face plate of the Jaw"s; a multi-
dimensional long locking pin having a square head part at first end and ...
The invention relates to A method to measure fireside corrosion resistance of
boiler components of ultra super critical boiler using Indian coal ash or flyash
at simulated boiler condition, comprising the steps of: preparing a plurality of
specimen formed of a base material corresponding to that of the boiler
co...
Formation of opening in shaft seal area of steam turbine casing through machining in which a new trajectory of gland sealing steam hole is developed. The new trajectory of the hole is in such a way that both holes will be straight hole. First straight hole starts from shaft seal portion at compound angle (13.3 degre...
The invention relates to a twin-layer coating methods for improving sea water corrosion resistance of condenser tube sheet made of carbon steel, comprising the steps of : grid-blasting of the condenser tube sheet using 12-16 mess alumina grit powders to prepare the surface; conducting an arc spray coating using meta...
The invention relates to an under fire air system for pulverized coal
based tangentially fired boilers; comprising: an under fire air flow
nozzle (1) provided at the bottom area of the furnace, air from the
secondary source of the boiler being injected to generate a
fluidization of the fluid-mixture; and a combu...
The invention relates to an auxiliary cooling system to limit the temperature
magnetic wall of a high power rectifier transformer below safe working
temperature limit, the transformer comprising at least a core having high voltage
(HV) windings, and low-voltage (LV) windings housed in a tank made of
magnetic ste...
The Intelligent Test Jig for Digital Output Module is invented to provide an intelligent system that can do the functional test of digital output module in a fully automatic method without any manual intervention. The Intelligent test jig is developed using various hardware and software components. The hardware comp...
An improved method of root pass welding consists preparing the 'V' or 'J' groove
on the pipes, putting the pipes on roller support, tack welding the pipes, grinding
the tack and then the root pass welding is carried out with a separate automatic
wire feeder feeding the wire through the wire guide. The wire guide ...
The invention relates to a probe holding device for holding Barkhausen noise sensor
for positioning of the probes eliminating an air gap between the sensor and the
component to be measured, comprising : a probe holder (5) capable of holding
different types of Barkhausen noise probes (1) for measurement of noise l...
The invention relates to a method of producing the stator core of a high capacity electrical machine having multi turn concentrated windings, comprising the steps of producing separately the laminations of the stator core and the lamination of the stator pole shoes; and press-fitting the laminations of both types t...
The invention relates to an An apparatus for detecting a failed shorted
thyristor in power supply unit for delivering power to a load, said apparatus
comprising : a circulatory device for determining voltage signal and current
signal threshold, the device comprising a hall effect voltage sensor
disposed in serie...
An improved bearing arrangement for an electric machine that finds application in
traction, comprising: a housing what includes plurality of taper roller bearing (5, 8)
coupled to a suspension tube that is coupled to the said electric machine; wherein the
suspended tube (7) comprises at least an upper flange moun...
A three-dimensional low pressure steam turbine moving blade device with subsonic and transonic blade profiles for high back pressure application, the device comprising: a plurality of free standing moving blade constructed spaced apart circumferentially from each other about an axis of a turbine wheel and having tip...
The invention relates to an improved dead tank current transformer for power
systems comprising at least a primary tube (2) circumscribing a top chamber
(1),an insulator (5) and a bottom tank (4), the primary tube (2) having a bore;
and one each incoming and outgoing terminals (P1, P2). The improvement is
that a...
A method for accurate alignment of floating lever and pilot valve in control valve
servomotor casing of a steam turbine comprising of assembling the dummy pin (1) with
the floating lever (4) outside the casing to guide pin diameter (H1) in the hole (H4) of
the floating lever and then the floating lever is dispose...
This invention relates to an improved gas metal arc welding (GMAW) process for welding of finned tube to headers in vertical position to form heat recovery steam generator modules in industrial boilers, comprising the steps of fixing a plurality of two end finned tubes to headers to form a HRSG module and positionin...
The invention relates to a Resting Tool for aligning dual tubing hanger bodies
with dual bores for handling tubings in offshore drilling operation, comprising a
body constructed with two grooves shaped corresponding to that of the hanger
body halves, the tool halves upon accommodating the hanger body halves can
...
The invention relates to a parabolic trough solar collector system receiving a sun
ray all throughout the day time, the system comprising a parabolic trough acting
as a reflector having a receiver tube placed at the focal length of the trough, the
trough being supported by a metallic structure over bush or bearin...
The invention relates to a stall detection and prevention system for axial flow fans in primary air system of thermal power plants, comprising; a dynamic fan behaviour (DFB) module receiving inputs representing input current, damper angle, air flow volume of previous time step, and air pressure head of previous time...
The invention relates to an improved supporting device converting existing Electrostatic precipitators complaint to statutory level of reduced emission of dust particles, bracketed cantilever arrangement (1) whereby the last column of the ESP is shifted towards boiler; a bracing in the longitudinal direction (2) whi...
A method for producing an improved ceramic a composite material comprising: mixing fine alumina based wear resistant composition with suitable amount of brown fused alumina in presence of a binder in a mixer, subjecting the mix to the step of fabrication to produce tiles using hydraulic press, sintering the tiles in...
A process for producing epoxy composite material with enhanced mechanical properties comprising: mixing the filler material with one or more commercial epoxy resin material, flexibilizer, accelerator and dispersing agent in pre-defined ratio to form a filler-mixed epoxy resin, mixing a hardener material to the fille...
The invention relates to a cutting device (10) and a method of cutting a metallic object (20). The cutting device (10) has a first cutting means (80) and a second cutting means (120). The first cutting means (80) cuts a first layer (105) of the metallic object (20) along a first line of advancement (110) on the firs...
The invention relates to development of an arrangement for facial
mounting of square shank tools adapted on a tool post of a CNC machine for taking
LH and RH facial cuts comprising fixing a base plate (1) on the plate of the tool post
of the CNC machine and then fixing a removable clamp (2) in one side of the pla...
ABSTRACT
TTTLE "A DEVICE FOR LOCKING OF A BREECH NUT AND AN INLET
CONNECTION TO AVOID THREAD DAMAGE DURING TRANSPORTATION OF
AN EMERGENCY STOP-CONTROL VALVE OF HIGHER RATING STEAM
TURBINES"
The invention relates to a device for locking of a Breech nut and an inlet connection to
avoid thread damage during trans...
The invention relates to a method for reducing agglomeration, sintering, shrinkage, and
choking formation in a fuel firing system of a boiler, comprising the steps of :addition of a
chemical modifier at an effective amount at the conveyor along with fuel or separately into
the combustor, wherein the chemical comp...
The invention relates to an improved fuel cell stack assembly operably connected to an external device at inlet manifold to prevent the source of flooding due to entrained water droplets or condensate present in the reactant feed gas, each fuel cell in the stack having a membrane electrode assembly (MEA) consisting ...
The invention relates to an improved fixing device for installation of air cooler on
the stator of hydrogenerator, the hydrogenerator having a plurality of air coolers
which are fixed to the stator frame(2) for dissipating the heat losses in the
generator stator, the device comprising : a plurality of cooler supp...
ABSTRACT
TITLE ‘ AN IMPROVED ELECTRICAL PANEL FOR DRIVING THE MAIN TABLE
OF VERTICAL TURNING LATHE MACHINE WITH AC SERVO MOTOR "
The invention relates to an improved Electrical panel for driving the main table of
Vertical Turning Lathe machine with AC Servo Motor, the improvement is characterized
in that provid...
The invention relates to a Non-hygroscopic electrical bushing for high voltage electrical application, comprising: a bushing having at least one electrical copper conductor surrounded by a core material; a plurality of equalization elements disposed around the core in desired radial positions from the center of the ...
The invention relates to an improved process on CNC lathe with newly developed
tools to reduce the process time for rough and finish machining of Balancing weight
grooves in shaft of steam turbine. The process comprising developing new grooving tool
with improved grade and cutting geometry and then selecting a hi...
The present invention relates to a fixture for holding the job blank while manufacturing varied length of wedges used in rotor shaft with field lead of turbo-generator.
The job being of thinner cross section and extended length has a tendency to deflect as a bow during machining operation which need to be arreste...
The invention relates to a versatile apparatus for controlling low, medium and
high frequency high voltage power systems for energisation of electrostatic
precipitator, comprising: a first hardware structure with associated software for
controlling ESP energisation, spark/arc detection and quenching, back corona
...
The invention relates to an improved ash discharge valve (ADV) in Circulating
Fluidized Bed Combustion Boilers control and recirculation of flue gas for heat
recovery, the improvement is characterized by comprising : a lance tube (1)
having an end cover and supported by a support assembly (2); an adjusting
lever...
The invention relates to a welding method with an improved weld sequencing technique for fabrication of assembly boiler headers involving minimum welding induced distortion, a header stub assembly constitutes a pipe of welded structure that contains a plurality of tubes called stubs positioned all through the length...
A device (1) for simultaneous machining of two jobs in single loading on CNC 4-axis horizontal milling centre and a method for the same wherein the blanks (11), made of alloy steel rectangular bars, are loaded in the fixture (1), mounted and fastened on T-slots (13) of machine table (12), on resting blocks (3) for m...
The invention relates to an improved supporting and guiding device for Fluidized
bed heat exchanger (FBHE) of the coils which allows free relative motion in axial
and transverse direction, the FBHE having coils in bundles vertically disposed,
the bundles consisting of a row of tubes in which only the extreme tube...
The invention relates to a device for setting amplifier gain, measuring sensitivity
of an ultrasonic testing equipment with a probe and evaluating the presence of defects in spot welds in terms of percentage of nugget area, the device comprising a single block having a projected face incorporating at the interface
...
The invention relates to a universal device to guide and support a cylindrical
work piece during friction stir welding process comprising a base plate (1) having
a plurality of slots configured at equi-spaced locations to mount the plate (1) on
a programmable friction stir welding machine; a clamping assembly (2)...
An improved Double sided arc welding process for Steel grade material for power application comprising the steps of providing a plurality of thick section plate or a plurality of large diameter pipes for simultaneous welding
from either side of the joint to avoid root gouging to ensure soundness of root pass; imple...
The present invention discloses a transport device for safe and easy transportation of Electro Hydraulic Governing rack assembly of a 200/210 MW Steam turbine. The said device consists of a pipe (1), a flat steel plate (2) and two supporting plates (3), all being welded to form a single unit. The pipe (1) is dispose...
The present invention relates to a microwave sintering system for uniform
sintering of large volume ceramic bodies in a microwave field, comprising a
microwave heating apparatus having multiple microwave feed source with wave
guides; a furnace having a furnace chamber; housing insulation including a kiln
furnitu...
The invention relates to a non-uniform air gap hybrid excitation machine for reduction of harmonic content in the output voltage of the machine comprising a plurality of permanent magnets (508) symmetrically disposed along the rotor (507) north-south poles; a plurality of slots (510) provided at the bottom of the pe...
The invention relates to weight optimized four legged parallel sided device for
conveyor gallery system in coal handling plant, the device comprising : four legs
each consisting of a plurality of columns; two parallel frames P and Q spaced apart
across the coal flow direction of the conveyor; two parallel frames ...
The invention relates to method of operation of air cooled turbo generators with
closed circuit air cooling system, the air-cooling system of the turbo generator
essentially comprising a plurality of air to water heat exchangers, a plurality of
axial flow fans disposed on the generator rotor, and a cooling medium...
A method of manufacturing a single piece weld-less pusher rod out of two pieces, the method comprising the steps of loading the first piece (2) of mandrel on a lathe machine and machining the first followed by end, drilling and boring the front end including machining a 90º cone; reversing the first piece and machin...
The invention relates to a weight optimized four legged inclined trestle
system for supporting conveyor gallery systems erected at a higher height
from the ground level in coal handling plant comprising ÷ at least four legs;
each leg consisting of plurality of columns a first set of frames P and Q
spaced apart a...
A process of simultaneous setting of upper and lower stator bars of a turbo
generator on a baking wagon during providing high voltage insulation on the
stator bars, the process comprising the steps of adjusting a baking wagon for
upper type of stator bars; replacing three of the upper bars with 3 lug rest (9) of
...
The invention relates to a Tubing spool with multiple radial exit bores for
control lines of sub surface safety valves injecting of water and chemicals;
comprising : a tubular body having a top and a bottom portion provided with
one each flange to form a tubing spool; a tubing hanger disposed on the top
flange b...
The invention relates to a method in an ultrasonic testing machine, for
determining load bearing capability of shrink-fitted tubular concentric hollow
cylinders of fluidized bed heat exchanger at high temperature in a circulating
fluidized bed combustion boiler the method comprising the steps of providing a
devi...
The invention relates to an electromagnetic brake for reducing undesired oscillations of solar panels due to strong wind, the solar panel (104) mounted over cross (105) supported by a central beam (101), the central beam (101) being free to rotate though an anti-friction bearing (102) and supported by a pair of vert...
The invention relates a method of producing abrasion resistant ceramic
liner for transportation of coals in thermal power stations produced at low
sintering temperature with high sintering range consisting of wt. % of
alumina >80%, an aluminosilicate and oxide additive mixture not
exceeding 20%, and manganese ox...
The invention relates to an improved arrangement of directed oil flow (DOF) for efficient cooling of transformer. The arrangement comprises of disposing directed oil flow holes as a part of core and end frame assembly and fixing a
detachable pipe assembly fixture (4) to a end frame (2) with its flange (7) being att...
The invention relates to a high temperature ash adhesion testing system
for measuring ash adhesion force on the boiler tubes at different elevated
temperatures in pulverized coal fired boilers, comprising: a shaped body
demarcated by a fixed stage (5) located at bottom portion of the body, and
a moving stage (1)...
The invention discloses a fixture (F) for supporting on half of the end shield at a time for drilling of holes on joint plane comprising a horizontal base (1) with a vertical support (2) on which the end shield (16) is mounted in such a manner that the joint plane is towards the top. A hydraulic jack ram is attached...
The present invention relates to a double dash pot core clamping device
for pressing windings of high rating power transformers the top windings
provided with an insulated layer, the device comprising a plurality of
rectangular shaped beam structures placed parallely, connected by a
number of cross bars along th...
The invention relates to a slow-moving ash cleaning device in a rotating air pre-heater to clean the soot deposited on the pre-heater chamber during pre-heating of air by passing flue gas, the air pre-heater having at least a housing with a wall box assembly, a solenoid valve, and a support assembly, the device comp...
The invention relates to a cold helium gas transfer device for high temperature superconducting (HTS) motors to facilitate inflow of helium gas between rotating part of the motor and a stationary supply source of cold helium gas the stationary supply source supplying through a stationary inlet pipe (11) cold helium ...
The invention relates to a three phase common enclosure type gas insulated surge arrester for protection of electrical substations from lightning, switching and temporary over voltages, comprising ; a plurality of metal oxide (MO) elements stacked in series to form a stack assembly, and connected by a corresponding ...
The invention relates to an improved process and a device for low-pressure die casting Aluminum alloy Non Drive End ventilation fan for traction motor, the device comprising a set of die and a two-halved core box wherein the massive region of the casting placed adjacent to the casting stalk to act as a virtual feede...
The invention relates to an improved control apparatus to prevent damages of soot blowers, the soot blower for boilers comprising a traveling carriage movable over a feed pipe and having a lance with at lest two nozzles, the
traveling carriage being controlled by a gear box; a valve head assembly allowing passage o...
The present invention relates to compositions of nanofluids containing a
thermally transfer fluid and ceramic nanoparticles. The nanofluid of the present
invention is based on a hydrophobic fluid such as transformer oil and the
nanoparticles suspended are multiwalled carbon nanotubes (MWCNT), copper
oxide (CuO) ...
The invention relates to an improved process in a device for measurement of
axial fan blade moment, in a power plant, is necessary the device comprising a
plurality of mounting arranged in sea-saw manner for mounting of the fan
blades, a lever with a hanging weight fixed on a frame of a support base, a
fulcrum, ...
The invention relates to an improved system for loading of resins in a demineralization vessel for operating a Reverse Osmosis-Demineralization plant,
the system comprising a transfer vessel for transfer of resin from external
sources; a motivating fluid centrifugal pump having a discharge pipe; a modified
inlet ...
The invention relates to an adhesive system for in-situ gluing of the
stampings of end packets of stator core of a turbogenerator, comprising
epoxy resin, anhydride hardener and tertiary amine, wherein said resin is
bhisphenol-A epoxy resin having average molecular weight 345, wherein
said hardener is Methylhexa...
The present invention deals with a guiding and vibration dampening fixture for long
drills in deep drilling operations with height adjustment and multiple drill size
compatibility. The fixture comprises a base plate (01) over which a stud (2) mounted, a
locknut (3), a cap nut (5), a guide (7) mounted over the stu...
The invention relates to an improved ultrasonic testing method of welded joints for accurately confirming geometrical indications, comprising the steps of : generating an indication from the ultrasonic testing equipment during performing Ultrasonic testing on a bi-thickness butt weld with pulse echo mode using one o...
The invention relates an adjustable stopper cum locking device for large
butterfly Valves for improved sealing of valve door and valve seat comprising a
first projecting plate (17) welded to lever arm (7) which rests on a spherical
headed stopper screw (19) which is fixed in a second plate (20) projecting out
fr...
The present invention relates to a weld-less method of supporting heat transfer
coil tubes exposed to thermo mechanical loads and a load carrying sleeve
operating under high temperature and erosion prone environment comprising the
steps of locating a plurality of sleeves at predetermined locations along the heat
...
The invention relates to an embedded contactor controller for DC drive of a rapid transport system to provide fast-switching of the power circuit of the DC drive and operate the power contactors of the circuit under make or break sequences, comprising : a processor having a software structure to evaluate the plurali...
The invention relates to a dual fuel burner for gaseous fuels with low
pollutant emissions, high burning efficiency and high flame stability for
twin fuels, comprising : (a) an innermost pipe (2) for a higher calorific
value fuel and immediate annular pipe (3) for supply of corresponding air,
which air is suppli...
The invention relates to an improved method of hard facing of stainless steels filler of similar/dissimilar chemistry in a twin-wire based gas metal arc welding procedure the process comprising the steps of providing a wire-feeding system on a gas metal arc welding machine, the wire-feeding system augmented with an ...
1. A universal fixture (1) for clamping of guide blade carrier (17) of low pressure steam turbine during stress relieving comprises: a base plate (7); a plurality of I-beams (8) directed diametrically in outward direction and I- beams (9) in circumferential direction welded on to the base plate (7); a plurality of p...
The invention relates to a Tubing hanger for handling tubings of oil wells with multiple ports for ease of operation and control of down hole operations,comprising : a hanger body configured with tubing handling bore at least two
exit ports for allowing easy installation and retrieval of ESP cables; at least four
...
The invention relates to an improved SF6 gas monitoring system, comprising
monitoring devices (4,6) connected to a filling-point duct; a cartridge-type valve
device (5) disposed adjacent to the monitoring devices (4, 6) enabling
connection and/or termination of the connection of the devices from the valve
device...
This invention related to an automated method of welding of non-ferrous short
circuit rings for electrical machines comprising the steps of providing a Friction
Stir Welding machine having a rotating tool, a machine base to hold a plurality
of job by clamping through a start block and end block; providing a plura...
A compact three phase wireless Electronic controller for power supply, energisation, and feedback control of an electrostatic precipitator, comprising central ARM processor with in-built control program , interface for coupling HVR- secondary feedback and alarm signals, primary input current and voltage feedback to ...
The invention relates to a pressure relieving device for high capacity, high temperature
and high pressure steam in super critical boiler, comprising a base (02) integrated with
an inlet neck (01) and a seat bushing (03), a closing element disc (06), connected to a
first end of a spindle (15) and, a disc holder (...
The invention relates to a device for reducing erosion in a tube bank of
economizer in high ash coal boilers, comprising: an economizer tube bank
consisting of in-line arrangement of plain tubes; wherein continuous flat strip
members interposed between two adjacent tubes; wherein the flat strip
members disposed ...
A process has been described where one side of the diffused emitter can be removed with a throughput of one wafer every few seconds with the help of
An etching solution of acids for etching of Si wafers comprising:
HNO3:HF:H2O:H2SO4 at a ratio of 15:0.62:1.7:28
The invention relates to a device for simultaneous slot milling/machining of multiple components in a milling machine; the device comprising a base (01) fabricated to form a structure accommodating the machineable components; a plurality of slots for bolt (02) at the centre of the base (01) to hold the device on the...
A new non-contact ceramic slip ratio measurement system was developed and demonstrated in shop floor for monitoring the composition of electro porcelain insulator manufacturing line effectively. The precise measurement of three different ceramic slips such as fresh, dry scrap and wet scrap could be measured up ...
The invention relates to a 3-phase STAR connected traction motor for EMU and
DEMUs applications, comprising: a stator core (2) formed of a single piece low
loss sheet steel laminations clamped between two cast clamping plates rigidly
fixed on a stator frame; a rotor core (1) fitted on a rotor shaft (16); the roto...
Intelligent boiler tube leak detection system comprising of intelligent acoustic sensors which detect leaks using digital spectral processing techniques, connected over an intelligent fail-safe digital bus network. The system has intelligent features like automatic calibration, powerless configuration, automatic pur...
The invention relates to the holding device for positioning a assembly Heat retaining shell assembly for uniform post heating of pipe with pipe butt joints, the heat retaining shell (10) assembly consisting of an inner and an outer hemispherical shell, the device comprising : a locking pad (1) to position and hold t...
A Rigid And Reliable Support Device For Heat Transfer Surfaces In A Fluidized Bed Combustion Boiler.
The invention relates to a rigid and reliable support device for heat transfer surfaces
in a fluidized bed combustion boiler, comprising at least one vertical steam cooled
hanger tube (1) placed in between a pair of horizontal coil assemblies (2); and a
solid forged strap (3) connecting the horizontal coils (2) t...
The present invention relates to an electro-hydraulic governing system for
medium rating steam turbine sets having mechanical governors, comprising a
mechanical governor; and a programmable micro-processor based electro-hydraulic
governor, the system is configured to generated a first sensitive oil
pressure sig...
The invention relates to a device to determine the skew angle and probe angle
of an angle beam probe corresponding to the changes in skew angle and probe
angle due to wear and tear of the probe, comprising : a single block having a
curvature between 90 to 100 mm with a slot having a depth between 7.5 to 8.5
mm i...
The invention relates to An improved tubing hanger with a single bore, two ports for electric submersible pumps and four control lines to control down hole operations of oil-well, comprising : ports for two nos of Electric
Submersible Pump cable (2) specific to make of the cable; at least four control line exits (4...
The invention relates to a removable union assembly, comprising a casing (01), a
seal ring hub (04), an oil port (02), a Steam/air port (03), a plurality of quick
connecting couplings, for mounting the removable union assembly on the
stationary union assembly (06) having a clamping means (07), wherein the
casing...
The invention relates to an apparatus for testing and calibrating a flame scanner
head assembly electronics adaptable to a flame scanner device in boilers, the
apparatus comprising an electronic module (1) receiving an externally input
power supply and providing a regulated power supply to an auto-halogen lamp
(...
A Method Of Improving Electrical Insulation Of A Brush Holder Mounting Arm Of A Dc Auxiliary Machine
A steel stud (1) is insulated with multi layer sandwiched insulation which consists of
mica glass folium (2) and woven glass cloth (3). The steel stud is specially machined for
knurling on the surface to ensure proper grip/bondage of insulation mould and steel
support and to make the mould mechanically strong. Mo...
The invention relates to an embedded device to display and control leakage gap
between a sector plate and radial seals in Rotary Regenerative Air Preheaters,
the device comprising a flash memory based microcontroller to receive an input
signal from an electronic sensor, process the signal in terms of rotor positi...
A control circuit (4.0) for reliable dimmable high power LED lamps, each LED lamp being is formed with a plurality of LED devices connected in a plurality of strings and each LED lamp being connected (5.0) to a matched constant voltage output source (CVS) to be operational, the control circuit (4.0) comprising
- a ...
The invention relates to a heat conducting support device for horizontal coils located
in the bundle chamber of fluidized bed combustion boilers comprising at least one
vertical steam cooled hanger tube (1) allowing a plurality pairs of horizontal coils (2)
to be shrink fitted through at least one solid forged st...
The invention relates to an IGBT based inverter module with dedicated
communication protocol for locomotive applications, comprising a power circuit
block having one or two H-bridge IGBT module. In case of two H-bridge IGBT
modules, they are connected in parallel; and a control circuit block having a gate
interf...
The invention relates to a low-embodied energy building integrated photovoltaic (BIPV) roof system comprising a plurality of crystalline silicon solar cells connected in series to form a string, the string has a high transmissivity glass superstrate and a Tedlar back sheet. This is encapsulated under vacuum to form ...
1. A hopper heating system for electrostatic precipitator utilizing heat energy
in the form of hot secondary air or hot primary air available in power
plants comprising:
- tapping of hot secondary air (300-310°C) or hot primary air (290-300°C)
from the boiler through steel pipe;
- the hot secondary air or hot p...
The invention relates to a device for oil conservation in lube oil ventilation
system uses which is provided with a finned cooler in a water jacket for cooling
the lube oil mist being sucked by mist eliminator and condenses the lube oil
vapor to form droplets and these droplets fall back in to the lube oil tank. ...
A device (D) for shearing aluminium strips suitable for production of electronic
control panel assembly consists of a shearing head (A) and a pneumatic padel
switch (8) to operate the head (A). The shearing head (A) is having a pneumatic
cylinder (1) inside which a piston works to actuate a lever (4). The cylinde...
Modular wheel for the movement of large Control panels within the shop floor,
comprising
- wheel frame (2) where wheels (1) are mounted,
- a plurality of rollers (8) arranged in each module,
- a plurality of spikes (3) to enable wheel-module getting clinched to wooden
pallet,
- a plurality of stopper plates (4...
An adjustable pivot ring in francis type hydroturbines with bottom dismantling facility which enables adjustment of the guide vane passage height including centralizing the labyrinth in order to absorb the variations that crop up during manufacturing and after concreting of stay ring at site consists of a pivot ring...
Accordingly there is provided in one aspect of the invention, an improved method of cold wire addition for pressure vessels joints in a single/tandem submerged are welding process. In a second aspect, the invention provides an improved method of cold wire addition in a welding process for hardfacing of dissimilar fi...
The present invention is provided with an improved Stator Core Pressing Plate adaptable to hydrogenerator in a Stator Core comprising a pressing plate having a plurality of finger parts configured at a distal end through machining process; the fingers each provided with a half round shaped contour a peak and valley;...
This invention relates to a universal connector for compact electrical equipment
in particular for metal clad compact gas insulated substation equipment
comprising; a shaped body made of high purity conducting metals and alloys,
and sizeably configured to correspond the rated voltage, current, and power of
the e...
Erosion of bed tubes in BFBC boiler is a regular affair requiring periodical
replacement of the tubes. Hence an alternate method of erosion protection is
invented.
The invention described herein with reference to drawing is not limitative, any
modification and/or alteration of such will be well within the knowle...
Accordingly, the present invention provides an electrical feed back system, which
enables the power pack to feed back the generated power in to the power grid
by power conditioning. Output of the rectifier is connected to a 3-phase inverter
via an alternator-rectifier set, which in turn coupled with is the diesel...
This invention relates to an embedded protocol converter for converting specific or dedicated protocol to general purpose MODBUS protocol the protocol converter providing communication interface between a plurality of field level
controllers (20-25) and a plant level controller (26) of an electrostatic precipitator...
The invention relates to improved pulsed GMAW technique for hand hole pipe welding
and in particular for hand-hole pipe to dish end cover butt welding in headers for boiler
components where the conventional adopted process was by Gas Tungsten Arc Welding
(GTAW) for root passes and shielded Metal Arc Welding (SMA...
The invention relates to a Heat Recovery Steam Generator System and a
method for full capacity utilization of an IGCC power plant in a condition when
the gas turbine is devoid of syn gas supply due to non operation of the gasifier
system, in a system as claimed in claim 1. Unlike the prior art of IGCC system
whi...
A Device for Removal and Disposal of Bulk Solids From Fly Ash Disposal Stream in
Pressurized Fluidized Bed Gasifiers comprising a fly ash hopper (01) to receive and
temporarily store the gas-free fly ash coming from the gasifier; a first vertical pipe (02)
for transferring dry fly ash from the hopper (01) to a fl...
The invention relates to an arrangement for lifting and turning Pelton and Francis
runners (1, 2) during machining and hard coating comprising a lifting device
comprising a pair of "L" brackets (5) joined together by a central coupler rod (6)
engaging a right hand and left hand collared nuts (7, 8) fixed in a "L"...
A trans-axial flow insulated nozzle for gas circuit breaker comprising of:
- an insulating chamber (1);
- a fixed contact system(2);
- a moving contact system (3);
- fixed contact terminal (4) and moving contact terminal (5);
- a fixed contact support (6);
- a fixed current contact (7);
- a normal current con...
To overcome these difficulties of finned tube to header welding for industrial boiler and to improve the productivity, the invention provides an improved Flux Core Arc Welding (FCAW) welding in the HRSG modules, by keeping the modules in horizontal position. By this method, each tube will be welded in down hand incl...
According to the invention, individual thermocouple assemblies are mounted in the air preheater centre sections instead of the lengthy multi point thermocouple pipe assemblies. The number of individual thermocouple assemblies varies from 4 to 9 depending on the Air Preheater diameter. The signals from these individu...
The invention relates to a high pressure Backward Aerofoil Bladed Fan comprising an Impeller (01) having a plurality of backward aerofoil type blades (02), the configuration of the plurality of blades (02) is profiled in such a way that flow separation losses, swirl and recirculation losses are 'substantially reduce...
Accordingly, there is provided an integrated apparatus for continuous forming of flat strip from standard MIG welding wire and feeding the strip electrode via a modified torch with corresponding contact tip for GMAW. The apparatus also serves as strip wire feeder and feeds the strip through the modified torch. The c...
Accordingly, there is provided an apparatus and process for alternate supply of shielding gas to the GMAW torch. The proposed method delivers two different shielding gases alternatively to the GMAW torch directly without any pre-mixing. The pulsing frequency is adjustable from 20 to 120 cycles/min. The welding param...
The stray loss in power transformer is generally made up of the following components:
- Stray loss in transformer tank due to leakage flux form the windings.
- Stray loss in the tank due to leads.
- Stray loss in clamping framework due to leakage flux from the windings.
- Stray loss in the clamping framework ...
A Device for mounting of conductor in isolated phase busduct (IPB) with the help of three insulators, 120 degree apart outside the conductor, a plurality of insulators (3) mounting for conductor (c); a plurality of insulators support base sub assembly (8) to accommodate support insulator; an enclosure (E) for conduc...
Accordingly, there is provided an improved bottom ring system of guide apparatus for Francis Turbines operating in silty water consisting of a bottom ring and a curved plate wherein the said bottom ring is a component of the guide apparatus assembly of the hydro turbine.
The invention relates to an improved sealing device for vertical type generator air coolers adaptable to thermal power plant, the device comprising: a tube sheet (6) provided on the gasket sealing surface of a water box flange (1), the water box flange (1) resting on the generator duct (2), a gasket (4) disposed on ...
A method of preparing pre-soldered and pre-molded sensor strain gauge for measurement of applied stress on a component comprising the steps of placing a sensor gauge (1) on a glass bottom (2) on covering the whole face of the gauge by double sided tape (3), placing around the tape covered strain gauge (1) a O-ring (...
The invention relates to an improved ventilating space device for
hydrogenerators comprising at least one leading edge spacer (1), a trailing edge
spacer (2) punching segment (6) to configure ducts for flow of air, characterized
in that the leading edge spacer (1) at entry point of air having an angle LA, and
th...
The present invention relates to an improved inductive Shunt device for high
power traction motor, comprising of four sections forming a magnetic core of
steel laminations riveted together, air gap between the core sections, two
number of copper coils each having six sections and U - pieces to clamp the core
sec...
This invention relates to a portable equipment and method for quick measurement of diffused reflectance of textured silicon wafers for solar cell comprising: a 12 volt power supply (1) to power a halogen lamp (2) which produces a collimated light beam through a lens (2) to fall on a textured silicon wafer (3), a sol...
A lathe type rotating fixture for welding bifurcates consists of a fabricated lathe
(1) structure having a head stock (2) and tail stock (3) at two ends. A motor (5)
and a drive shaft (4) transmit a synchronous rotation to the head stock (2) and
tail stock (3) through sprocket and pulley (10). A head stock fixtur...
Gas circuit breaker as the movable shield for improvement of interrupting
capabilities, consisting:-
- the first movable contact assembly (A) comprising movable contact (01) held on
contact support (02), movable contact shield (03) covering the first movable
contact (01) and movable current carrying (CC) contact...
This invention relates to a device and a method of forming the device for corrosion fatigue testing on weldments of metallic materials comprising: a mounted split steel base plate (5) at the bottom of a test specimen (3) containing a weld (4); a bottom slotted plastic container (2) placed on the base plate (5) surro...
This invention relates to a solar module or an array of solar modules as a solar power generator as well as a sensor with an automatic cleaning device comprising of a solar module mounted on a support, a charge controller, sensor and a timer running a DC pump for a predetermined time by a timer adapted in the sensor...
The invention relates to a method for fastening wearing liner plates on top-cover
and pivot ring in a hydro turbine by adapting improved counter-sunk screws, the
method is providing counter-sunk screws having edge of the screw-head
flattened with 15° taper, providing liner plates each comprising a plurality of
h...
The invention relates to a process for producing concrete that utilizes weld slag
waste as a partial replacement to sand by blending with fine aggregate in
concrete, comprising the steps of combining water, cement, fine aggregate and
coarse aggregate, the fine aggregate containing natural sand and crushed weld
s...
This invention relates to a process of welding of flat fins to tube of panels of boiler plant to produce a boiler tube assembly comprising the steps of longitudinal tack welding by stationary tubes (1) by conventional gas metal are welding (GMAW) to continuously fed flat steel fins (2) arranged between the tubes at ...
This invention relates to a system for testing functionality of flame detector
deployed for monitoring of burner flames, the system comprising atleast one
testing mount(l), to hold in place a sensor head of the flame detector apparatus
under test; atleast one intensity variator(3) having a drive(4) and a controll...
Accordingly this invention has provided an improved 850 kW, 3-phase induction motor adaptable to 6000 HP electric locomotives, in particular for
freight hauling at high gradients locations. The motor comprises a stator having stator core formed of sheet steel lamination, a plurality of punched slots of size 500 mm ...
Accordingly there is proposed a device, which will be able to measure the distortion at a particular location during welding from a far-away place. The device consists of a laser light line source (1), a camera (2), a computer (3) and a reference plate (5). The laser light source emits a line which allows to fall on...
This invention relates to a method of producing a ceramic filter for filtration of fluids from a mixture of powder in wt % of alumina -70-80, graphite -15-20, optimized mixture of clay materials as flux(felcite based composition) - 0.5 -1.5 and additives(e.g. clays, magnesia, alkali stearate etc.) of different perce...
The invention relates to an improved tangentially fired boiler using low-Sulphur-
Content pulverized coal, the improvement is characterized in that a low-pressure
economizer (7) is disposed between the air pre-heater (2) and the electrostatic
precipitator (3) in the flow circuit to allow the feed water (8) from t...
The invention relates to a Multi Inlet High Performance fluidized bed heat
exchanger (FBHE), provided to enhance the heat transfer rate and achieve
uniform heat recovery to ensure optimum operating temperature in fluidized bed
boilers. This device is used for optimization of air pressures and reduction in the
re...
The invention relates to a system adaptable to enhance the calorific value of
syngas corresponding to a value applicable to the gas turbine in an integrated
gasification combined cycle power plant (IGCC), the IGCC employing an air
blown fluidized bed gasification device, the system comprising; a first syngas
(07...
The invention relates to a toggle connector device in a coal-fired utility boiler for
connecting the fuel pipes on the fuel pipes on the windbox mounted on furnace
water wall, the fuel pipes carrying pulverized coal in powder form from the
pulverizer to the windbox pneumatically, the windbox during operation
und...
Accordingly, there is provided a method for dismantling and reassembly of high capacity 'Crawler Cranes With Lattice Booms' without the use of additional crane, including loading and unloading from transport vehicles adaptable to handle wind electric generators at wind farms. The method of unloading or reloading of ...
The present invention provides a system and method for testing the weld during welding. The formation of the defects can be identified as and when the defect is formed and can be used for providing feedback to control the weld parameter to avoid continuance of the defect formation. It can allow the repair of the def...
A bushing tap device, connectable to a bushing tap assembly for online monitoring of a transformer bushing, said device comprising a brass stud arranged in a brass cap, with one end of said brass stud connected to a cable for onward connection to a remote ground and the other end provided with a hole for receiving a...
A PROCESS FOR FORMING METAL BORIDE COATING ON SURFACE 6? STEEL AND ALLOYED STEEL COMPONENTS
This invention relates to a process for forming metal boride coating on surface of steel and alloyed steel components subjected to high stress conditions comprising the steps of:
a) preparing a packing mixture essentially c...
Accordingly, the present invention provides an embedded system to interface various control and monitoring devices of electrostatic precipitator, the devices having different communication protocol which is capable of adapting a plurality types of communication hardware and software protocol. Present invention utili...
According to the invention there is provided a Foidable portable and non-fragile solar charger .The Foldable Charger can be folded like a bag and being low weight can be taken to remote places comfortably to charge the batteries at remote places where conventional power is not available. Also, the cut pieces of sola...
The various methodologies used to make dry type transformer are:
i) Resin impregnation by dipping transformer coil in insulting
varnish and using VPI process.
ii) Coil caking by using semi-curd resin impregnated insulation
as layer insulation and winding the coils with it then baking
the whole coil.
iii) Resin...
The invention relates to an improved plug-in surge arrester for electrical sub-station application, in particular indoor switchyard applications, comprising -an insulating tube assembly (01,02,03) having at an upper end a HT terminal (04) for electrically connecting the device with power systems; -a stress-grading a...
In the present invention the regulating ring of a hydro Turbine with
external regulation of guide apparatus is made as a single piece and
very compact in size. The single piece regulating ring in then
ingeniously lowered into the turbine pit by providing two diametrically
opposite slots between the sole plates o...
It is clear from the prior art and current industrial practice that several failure of
brittle part of the assembly of device, typically fracturing of ceramic electrolyte in
SOFC assembly during use is the main shortcoming of the current practice which
need to be avoided to improve the device more specifically th...
All welding processes rely on either gas shielding or slag shielding (produced
from a welding flux) or a combination thereof. Thus the SMAW (shielded metal
arc welding) process uses fluxes as a coating. In SAW (submerged arc welding)
the welding arc is buried under a blanket of flux which on melting protects the
...
A four-wheeler diesel Electric Tower Car (DETC) with light weight body
shell comprising:
- a rectangular shaped superstructure shell having two driver cabins at both
end, two side walls and a roof assembly disposed on an underframe
(008);
- a store room (003) for storing maintenance materials;
- a tank room (0...
This Invention relates to a down wind type micro-wind turbine generator for generation and supply of electrical power to micro-wind farms through storing in a 12V battery comprising
a wind turbine rotor (1) comprising of a plurality of compound blades (2) consisting of plastic sheets (17) tied to a square wire mesh...
The present invention of development of automation of LFO firing system comprises a computer apparatus where the data from input formats for sizing and selection of piping, equipments and devices are supplied. It uses the technical rules and standard data. It captures instrument type, location and numbers from the i...
A contact or non-contact type digital gauge apparatus for measurement of fillet
weld surface profile comprising of two measuring devices (5) and (6) mounted
on a slide (7) and integrated with a processing unit with a built-in algorithm, a
base (4) fixed on a horizontal part (2), a vertical shaft guide (3) mounted...
Abstract not available
The invention relates to a method of brazing of flattened formed tubes (3) with a sheet substrate in radiation panels, cryogenic panels, solar shields and other heat exchanger panels (5) comprising the following steps of laying of guiding rails (2) as per the required tube layout on the base plate (1), placing a pac...
The invention relates to a method for deposition of anti-reflection coating of
silicon nitride on printed silicon solar cells in a plasma enhanced chemical vapour
deposition (PECVD) process by keeping the solderability of the bus bars
protected, comprising providing a device (1) having at least one masking strip
...
The present invention relates to a method for manufacture of alumina ceramic
tubular symmetric micro-filtration (MF) single or multi-channeled membranes
with versatility in geometry / profile i.e., single or multi-channeled hollow or any
other profile and variable physical dimensions e.g., length, internal diamet...
Abstract not available
An Apparatus With Improved On Load Stability And Safety For Lifting And Shifting Gas Turbine Rotors.
A lifting apparatus (A) with improved on load stability and safety for lifting and
shifting gas turbine rotors consists of an I-beam (1) connected to a crane hook
(6) by slings (5) which passes over a sheave (7) assembled in a carriage (14). A
carriage assembly (2) for lifting rotors consists of a carriage (16) h...
A method of friction forge welding of aluminum tube to tube sheet joints
comprising the steps of rotating the tool (3), made of material in accordance
with the material to be welded, at pre-determined speed of revolution by the
prime mover (4); forwarding of the tool (3) by the linear actuator (5) to come in
con...
A Resistance Temperature Detector device for monitoring of thrust bearing
metal temperature of boiler feed pump comprising:-
- a miniature platinum resistance temperature detector element (1).
- a semi-flexible stainless steel armour (2) over the RTD wires
connected to said element,
- a metallic feed through tu...
The present invention to the development of a new spectrophotometric technique for predicting the dissolved 2-furfuraldehyde (2-FFA) in transformer oils. It is based on measurement of optical density of a colored complex formed by the addition of aniline and glacial acetic acid to service aged transformer oil at 20°...
The regulating transformer (R) which draws power at 25 KV from the traction
overhead line is divided into 32 parts that corresponds to 32 voltage steps. The
output of the regulating transformer is fed to main transformer (M) which has
an arrangement of one primary winding (P1, P2) and two secondary winding (S1,
...
This invention relates to a pneumatic disc brake system for large sized AC vertical motor characterized in that: four pneumatic brake units (C, I), E, F) located 90" apart around a brake disc (5) fixed to brake hub (8) which is fitted on the motor shaft (10), wherein the said brake unit comprises 2 brake pads (1) ac...
This invention relates to a device to hold an acoustic PD sensor having BNC connector during partial discharge measurment in an oil-filled transformer, comprising at least two non-flexible tube members (01,02), the outer member (02) being screwable over the inner member (01), the inner member (01) rigidly holding th...
Abstract Not Available.
A porous silicon carbide product having a uniform, unimodal and controlled pore size, sufficient permeability and durability for use in high temperature gas filtration such as removal of particulates from hot flue gases or coal gases. The method of making the product involves selecting the silicon carbide grains of ...
"An advisory engine for monitoring the performance and efficiency optimization".
An advisory engine for monitoring the performance and efficiency optimization characterize of a stoker-fired boiler producing steam having a combustion chamber, a stoker for supporting a solid fuel bed, said stoker disposed at bottom o...
A novel device of centering hydrogenerator with respect to turbine
bearing
comprising:-
(a) Adjusting screw (8)
(b) Support element (9)
(c) Reaction Arm (10)
(d) Fixing screw (12)
Which are fixed at four places, diametrically opposite to the rotor shaft,
spaced equally, characterized by radial distance at tu...
A method of winding placement for a split winding power transformer
comprising:
- at least two LV windings and at least one common HV winding;
- LV can be disposed either concentrically or axially split;
- LV windings maintains a definite axially split gap with core or LV windings
maintains a definite axial gap...
The present invention relates to a process to inroduce a predetermined
compressive strength of 300 Mpa upto a depth of 0.25mm from the peened
surface on fir-tree root blade for low-pressure steam turbine operating at
3000 rpm. This process comprises bombarding a stream of hardened
spherical steel shots through a...
This invention relates to a method for treating agricultural run-off water to
produce make-up and process water for boilers, comprising the steps of; storing
of agricultural run-off water in a storage space; supplying a predetermined
quantity of the water from the storage space in a first pretreatment stage (01),...
The invention relates to a modified air-cooled turbogenerator preferably of 110
MW capacity with an improved ventilation circuit, the modification is hot chamber
(4), and the cold chambers (11) disposed in such a way that hot air comes out of
the generator (3) all along the length of the stator (5); the coolers (...
An Improved Insulation and the process of making the same comprising of:-
- a preliminary layer of special moisture resistant polyimide insulation
followed by a layer of fibre glass insulation on the wire;
- conductor wire with this insulation are wound with required no. of turn
into complete coils;
- the coils...
The invention relates to an import steam receiving and distribution device for
operation of a super heater system at rated parameters with or without import of
stem from the boiler of the syngas cooler, the device being disposed in the Heat
Recovery Steam Generator (HRSG) system in an Integrated Gasification
com...
Not available.
An apparatus for skin temperature measurement of tubes placed in boiler furnaces consists of a tube insert, preferably of length between 100 mm to 200 mm being welded to heat absorbing elements and a thermocouple (1) having its
hot junction fitted into the tube insert (2) and is provided with a metallic fused
plug...
The invention relates to an improved deep bore stelliting system for depositing
stellite weld metal inside a narrow and deep bore of a valve body, the system
comprising an insulated gas cooled sleek MIG welding torch (11) carrying a
welding current, a shielding gas, and a wire for welding inside a narrow and deep...
The invention relates to an improved method of sealing in vertical spindle bowl
mills for preventing leakage of air-coal mixture to the atmosphere by adapting
non-contact type labyrinth seals, the method comprising the steps of providing a
non-contact type sealing device comprising at least two labyrinth seals (1...
Accordingly, there is provided a process for welding of boiler tube panel which
enables the tube and fin to be fed continuously and joining of tube to fin is
achieved by high frequency welding. The advantages of the invention can be
seen, inter alia, in the fact that the boiler tube walls can the welded in a sing...
Accordingly, there is provided a shutting down device adaptable to pressurized
fluidized bed gasifier, the gasifier operating at a bed temperature between 900°
to 1000°C; and being in a state of shutting down by cutting-off supply of feed
coal followed by stoppage of the flow of air and steam, the device comprisi...
This invention relates to an improved method of metal temperature
measurement including installation of at least one temperature sensor in boilers
tubes disposed in hot flue gas path of HRSG, the improvement is configurating a
metal pad (4) having a through-hole and a tube portion (5) for easy cramping
with at l...
The present invention relates to sealing design and methods for isolation of
fluids in a device by the application of compressive forces. The device may
use multiple gases or liquids at various parts, which are required to be
isolated by incorporating adequate sealing between various functional sub
parts of the ...
An improved flash butt welding system and an improved for welding of boiler
tubes process is a solid state joining technique that uses arc heating of the
components to be joined, the arc being struck between two tubular components,
for example, and then magnetically rotated rapidly around the circumference.
The ...
This invention relates to an improved insulation and the process of
making the same comprising:-
-applying a preliminary layer of special moisture resistant polyimide
insulation (2) followed by a layer of fibre glass insulation (3) on the
conductor (1);
-winding conductor wire (1) with this insulation with requ...
Heat Recovery Steam Generator (HRSG) 100 for recovering heat from exhaust gas is provided. The HRSG comprises a module 202, wherein the module 202 comprises a top header 104, a bottom header 106 and plurality of tubes 108. The top header 104 is of diameter 127 mm and thickness 28mm. The plurality of tubes 108 are we...
This invention relates to a system for remote monitoring of desalination plant in
a cellular telecommunication network, comprising a core module based processor
(1) comprising: means for (2,3) transmitting and receiving data through RS 232
serial communication port, a GSM modem (4) being connected to the means fo...
The maintenance seal of a bi-plane penstock valve door needs to be replaced from
time due to damages caused by erosion. For changing this maintenance seal, the
water conductor system upstream of the valve up to surge shaft gate no longer
needs to be evacuated. The invented arrangement of valve door, lever and
se...
This invention relates to an improved system for interfacing signals between high
voltage rectifiers and electronic controllers in electrostatic precipitators (ESP) by
adapting open standard wireless protocol, comprising; a network coordinator
(11) in particular for zigbee network, comprising a microcontroller (1...
A resistance welding instrumentation system for measurement and display of
welding time, welding current, and force developed during resistance welding of
metal sheets, comprising a load cell (1) bias able to output-signal representative
of load information, the outputted signal transmitted to an amplifier (4), t...
The invention relates to an apparatus for the manufacture of low-volume fused
flux by using nonconductive mineral oxides, comprising a furnace shell or a
melting crucible interposed in an outer shell (1), the outer shell (1) being formed
of a water-cooled inner shell (4), and a lining layer (3), the furnace bei...
A method for protecting reheater by bypassing steam around a High Pressure turbine is provided. After receiving a signal indicating existence of bypass condition the signal, High Pressure Bypass (HPBP) valve is opened, thereby bypassing the HP turbine and supplying the steam to the reheater. Additionally, a High Pre...
A process for removing arsenic salt or arsenic compound from
arsenic contaminated water using nanostructured porous alumina
powder as an absorptive media comprises:-
- a preparation of plurality of known concentrations of arsenic
contaminated water;
- agitation of these arsenic-contaminated water with a definit...
A method of stator anchoring for hydrogenerators comprising the steps of:
- machining of a plurality rectangular slots in each sole plate (2) and in stator (6)
corresponding to locations of the sole plates;
- fitting of master anchoring plate (1) in each slot of sole plate (2) with screws (3);
- insertion of two...
An advanced rapper operating method for electrostatic
precipitators (ESP) comprising of a rapper controller (7) which
switches ON or OFF a rapper motor (12) through an output card
(9), the ON or OFF status of motor (12) being conveyed to
controller (7) by input card (10), the said rapper controller
being connec...
A sealed oil filled transformer (A) comprises: main transformer tank (01),
conservator (06), rollers (03) and HV/LV bushings (04), Buchholz relay (07),
additional stiffness (02), pressure relief valve/vent (08) and magnetic oil level
gange (09).
The empty portion of the conservator (06) is filled with dry air or...
Drum shaft is fitted with drum to carry out heavy torque require in oil drilling
operation. To avoid any slippage between drum and drum shaft while transmitting the huge torque, both (drum and drum shaft) are unitized by interference fit. While pressing the drum shaft into the drum in ambient
temperature and horiz...
Accordingly there is a provision of a simple, easy and low cost method of firing pulse generation circuit used as a part of the "Electronic Controller" for controlling the output voltage of a single phase Pulse Width Modulated (PWM) inverter. In this method, a variable amplitude constant frequency sine wave is gener...
The invention proposes a unique method to schedule several tasks to
achieve optimum usage of processor resources with memory management
for data sharing. More particularly, the invention relates to a method for
transmission line protection by means of a multifunction numerical line
protection relay.
The present...
Blade attachment slots on the periphery of gas turbine tapered compressor
wheels (or disks) are produced by milling at compound angle on a general-purpose
standard CNC horizontal boring machine using a general-purpose
standard universal head. The milling cutter is accurately tilted through two
angles in three di...
The invention relates to a sealing device for flow isolator apparatuses adaptable
in steam generator, Integrated gasification and combined cycle plants, and ducts
or pipelines carrying fluids, comprising a conduit (1) having a plate gate isolator
interposed therein; a movable gate plate (2) insertable in or witdr...
A modular platform system eiectable inside a water box of a condenser
for safe access to condenser tubes at power plants! comprising:
a plurality of vertical modules (1) each ingressable individually Inside the
water box for erecting therein to form a number of columns, the vertical
modules (1) each having sever...
Accordingly, there is provided an improved flexible lubricity additive dosing
system adaptable to a gas turbine operating on naphtha fuel, comprising an
unloading device having a portable motor driven barrel pump for transferring
lubricity additive from a barrel to a storage tank, the storage tank being
operably...
A device and method for holding at least one conducting means 108 against outer surface of a pipe 110 is provided. The device comprising a first block 102a defining a first inner curved surface112a and a second block 102b defining a second inner curved surface 112b. The first block 102a and the second block 102b are...
An improved version of the apparatus and method for controlling the flow of fluid along with solid
particles is described. The main claim of this invention is in utilization of rack and pinion mechanism for converting the rotary motion, initialized by the stepper motor movements based on the signals received from t...
The problem arises in the prior Art was investigated and it was observed
that the notches provided in the pass plate was the main cause for mixing
of hot and cold feedwater. New Improved method comprising the partition
plate is fitted into hemihead of high pressure feed water heater. While
assembling it is also ...
not available
An apparatus for regulated bulk solids feeding to grinding equipments used in power plants and industries. The apparatus has special features like soft starting, self-diagnostics, smooth control at lower loads etc. The apparatus further provides facility for operational flexibility and fast / easy troubleshooting.
...
not available
Integrated steel plants are equipped with blast furnaces, coke oven batteries and score of other furnace for heating and steel melting. Blast Furnace Gas (BFG) and Coke Oven Gas (COG) are generated in steel making process. Blast Furnace Gas contains very low amount of combustibles (20 to 22 percentage of CO, which p...
Accordingly, there is provided a system for automatic and optimum load sharing
of a plurality of generating machines in hydro power plants, the system
comprising an ALSS(automatic load-sharing system) configurator module for
providing inputs, the configurator module containing project specific data in
respect of...
A multi fuel firing bed assembly capable of burning a variety of fuels from coal to biomass comprising a drive system, said drive system being self lubricated and provided with lubricating ports at strategic locations so as to maintain smoother operation with reduced wear and tear.
A fibre fuel distributor used for distributing fibre fuels evenly into the combustion chamber comprising a fuel chute (06), which extends upto adjustable distributor plate, said distributor is mounted on said combustion chamber by means of a furnace mounting flange (02) maintained at an appropriate angle for imiform...
The present invention generally relates to a gravity fed oil fired burner capable of carrying out combustion without fuel oil pressuring pump, combustion air blowers, atomizer tips and air fwirlers. In particular, the invention relates to a method and apparatus for generating a vertically upward firing configuration...
The present invention particularly relates to materials joining technique for an electrically conductive pure nickel tab onto an electrically non-conductive sintered / impregnated porous nickel electrode employed in the manufacture of batteries using solid state Nd : YAG (Niodymium Yttrium Alumina Garnet) laser spot...
An automatic SPV array cleaning system (A) which comprises of an SPV array (1.01) connected to a battery bank (1.10) through power conditioning unit (1.09),a sensor module (1.04) which charges a battery (1.08) through automatic control circuit (1.07) and feeds signal to automatic control circuit (1.07), and an AC pu...
A power transformer has been developed with improved cooling
system of 2 x 50% radiator banks, with lesser material and space
requirement having flexibility of easy replacement of components
with least shut down during maintenance jobs.
Due to compact size and lesser lay out space, the transformer can be
instal...
According to the invention, there is provided an improved stepped
block tubular air preheater adaptable to thermal power boilers, the
preheater comprises atleast three blocks each block being comprised
of a plurality of hollow metal tubes extending at both ends so as to
terminate into a plurality of tube plates ...
An improved rim ducts for floating rim of hydrogenerator to generate adequate air for ventilation of hydrogenerator comprising
- a rim punching segment (1) on which a plurality of bushes (20) having specific height are welded to create axial gap for generating air;
- a baffle (3) is welded around the outer bushes ...
Accordingly there is provided an integrated partial discharge free epoxy based
terminal bushing device capable of withstanding momentary high fault current,
comprising a HT- sleeve provided at a center of an withdrawable die, the
withdrawable die forming an epoxy Body via pump-feeding of 3 homogeneous
resin m...
To overcome these difficulties of thermal spraying of boiler components such as
burner panel, steam cooled wall tubes, etc. and to improve the life of the boiler tube against erosion, it is proposed that the wire arc spraying by making use of nano grade flux core wires. By this method, the portions of the tubular b...
Accordingly, there is provided a fixture for riveting ( fig.2(a) & 2(b) ) comprising a setting piece(1) having a slot S1 for setting on wire fitted on blade and a threaded hole H1 for fitting support(2), two threaded holes(H2)
and a third hole(H3) for fitting holding clamp(4), a support(2) fixable on setting piece(...
An in-situ process for repair of hydrogenerator stator winding bars in particular overhang stator winding bars, involving partial dismantling of the hydrogenerator, comprising the steps of:
- identifying the failed winding zone and the fused copper conductor;
- removing deposits from the affected zone in the ident...
High temperature bulk solid cooler for fluidized bed gasification system comprising of twin shells, a number of water tubes, a number of baffle plates, water inlet and outlet pipes to cool the bed ash and fly ash continuously in an improved manner by ensuring flow of water only through the tubes.
...
An improved method for monitoring the performance of at least one gas drier (2) in a turbo generator (1), comprising:
- Providing a dew point measuring device (3);
- Forming a flow-circuit (4) for the flow of H2 gas adjoining the atleast one gas drier (2) and the turbo generator (1), the flow-circuit (4) being equ...
This invention relates to a method of manufacturing grinding roller
for coal pulverizing in Raymond type pulverizers with replaceable
grinding bits, grinding roller formed thereof and grinding bits
comprising the steps of forming grinding bits (05) of high wear
resistant material fitted onto a base material of l...
A process for removal of H2S and Mercaptans sulphur from compressor oil comprising: adding adsorbents under heating in presence of nitrogen bubbling for a certain period of time with stirring; subjecting the oil thus obtained to the step of filtration.
This invention relates to an improved strip electrode gas metal arc welding system for providing higher deposition rate, improved gap bridging capability, higher welding speed and better weld quality. A guide tube (3) for feeding a standard MIG welding wire (1); a rolling - cum - feeding means (5) for
converting th...
A traction alternator for diesel electric locomotives with AC auxiliaries Comprising:
- main alternator (01) having a rotor (04), companion alternator (02) having a rotor (05), self-ventilated fan (03), common stator frame (07), and shield (08), brush gear assembly (09), main alternator rotor hub (10), companion al...
Primarily a non mechanical type sealing system, the water cooled high temperature bulk solid removing system comprises two sub systems, namely a bed ash diverter and ash cooler which removes the bed ash from the gasifier and thereby maintains the bed height in an improved manner and obviates the disadvantages of the...
The invention relates to a separating device for reheater in power plant, comprising, a cast steel casing (01) welded to the pipeline; a tight-fitting pressure seal bonnet (5) which has an annular cavity in the outer diameter in
which a pressure sealing ring (6) and a supporting ring (7) are fixed; a split ring
(8...
A permanent magnet generator comprising a permanent magnet rotor assembly (1) having a magnet sleeve (2), the magnet sleeve being
provided with slot (3), magnet holder assembly (5) and a magnet cartridge (6) with permanent magnets (9) positioned and bonded with
adhesives in slot provided in the magnet cartridge (6...
An LED based solar street light comprising a luminaire (1.1), a solar module (1.2), battery box (1.3) containing battery (2.1), charge controller (2.2) and duck to dawn controller with switch (2.3), characterized in that the luminaire has a power rating of about 6 W.
The invention relates to an apparatus for testing and calibrating a feed control
system (DUT) for bulk solid feeders, the bulk solid feeder at least having a centralized controller for the purpose, a weight sensing device, and a drive mechanism, the apparatus comprising; a computer system comprising a
computer dev...
A method for low cost automation of support trunion welding with stepped header of rotor post assembly consists of driving a rotating table(l) carrying the support trunion(8) by a gear box (2) and motor (3) to suit the speed required for welding and providing CO2(7) or a mixture of CO2 and Argon gas as shielding
me...
This invention relates to an improved torch for Electrogas welding in groove joints is developed which enables smooth feeding of wire to carry out welding in the grooves joint of 12-15mm gap and thickness up to 75mm. It is very sleek,
lightweight and has a very good stability during welding operation. It facilitate...
The invention relates to an improved welding electrode holder adaptable to narrow gap welding applications in the process of manual metal arc welding, comprising an electrode holder body including a bottom jaw (01) forming a first
single component; a metallic lever including a top jaw (02) forming a second single c...
Development of an automated machine for ironing of insulation of
stator coils of electrical motors comprising:-
- a machine base unit for supporting and providing various
mountings;
- a rotating head assembly with opening on top for simultaneous
rotational pressing and heating of the fixed cover coils;
- a mai...
A low output current sensor adaptable to protect circuit in a switchgear comprising a central conductor, surrounded by a coil having two windings that is wound on an insulation. Core and housed in a homogeneous epoxy casting. The windings are wound in two layers and connected in series to maximize the output.
...
An improved system for remote data collection and diagnostics of electrostatic precipitators of multiple boiler units located in distant geographically comprising three controllers, level 1 controller (17,18, 19, 20, 21, 22), level 2 controllers (04, 05, 06, 07, 08, 09) and level 3 controller (01), wherein said syst...
An improved stay ring (1) with cast stay vanes (12) weld joined to upper and lower stub vanes (9,10) integrally cast to respective belts (4,5) consists of an upper belt (4) being cast integrally with stub vanes (9), a lower belt (5) being cast integrally with stub vanes (10) when a middle stay vanes (12) is cast sep...
A method for welding together a head pipe and a tail pipe substantially perpendicular to each other is provided. The method includes preparing edge in the tail pipe and edge of the head pipe for welding. Further, configuring the tail pipe and the head pipe substantially perpendicular to each other, wherein the prepa...
The present invention is
1. Related to a compact polymeric insulator(Ref.1 of Fig.2) with a conical
hollow chamber (Ref.2 of Fig.2) filled with the gas used in the gas filled
equipment/ device.
2. Effecting support to the HT bus bar (Ref.3 of Fig.2) at both ends of the
polymeric insulator.
3. Enforcing a gas i...
According to the invention, there is provided an insulation method in which 1.0 mm thick epoxy glass molded components of suitable shapes have been designed. These pieces have sufficient strength to withstand the abuse of assembly. These molded components are assembled on the pole body and then the field coil is low...
This invention relates to an improved Rotary Arc Gas Metal Arc Welding system for providing desired side-wall fusion and bead characteristic in groove and fillet joints, the system comprising: a spool (1) including a wire feeder (2) for feeding a wire through a rotatable a rotatable torch (14), a motor (3) connected...
Accordingly, a novel device for improved pole to pole connection of field winding for
Hydro-Generators has been invented. In this newly developed device, after mounting
of wound poles on rim, the field coil connecting leads of adjacent poles are interleaved
& soldered. The joint is thus insulated and clamed using...
An improved system of servomotor mounting and guide apparatus locking for a large Kaplan turbine consists of four reduced size servomotors (9, 10, 11, 12) and mounting them on a stay ring (16) when the said servomotors are
connected to a regulating ring (3) through piston rod (17) adapting clevis mounting arrangeme...
The present invention relates to an interpad cooling device for thrust bearing of Hydro Generator comprising a vertically fixed pipe (13) having an upper open end and a second bottom open end is connected to a spring plate (12) and first end of a flexible hose pipe (4) is connected to spring plate (12) and the secon...
An improved vapour seal (A) for hydro generators consists of a plurality of segments of a oil vapour seal (A) having metallic inserts (2) along with nitrile rubber gasket (3) provided in between two segments (B) for sealing and joining together by a plurality of bolts. The nitrile rubber rings (D) are fixed on to ea...
The present invention relates to an aerodynamically improved tiltable steam-coil-air-preheat (SCAPF-1) for preventing corrosion in the cold end elements of a boiler system. The boiler system having a main preheat (010 having at least one cold element (02), a power actuator (10), a plurality of forced draft fans and...
The invention relates to an improved retaining ring adaptable to the rotors of induction motors, the induction motor comprising a rotor core (4) disposed on a shaft (5), the rotor core (4) having a plurality of slots angularly and equitably disposed over the outer periphery, each slot accommodating a rotor bar (2) w...
280KW DC traction motor with 200 class insulation for broad gange Diesel Electric Locomotives has a high permeability steel magnet frame (01). The armature has armature core (07) built from electrical quality low loss sheet steel laminations insulated from each other and assembled on shaft (08). A plurality of armat...
In the new design of guide stop (Ref Fig. No.02), main consideration were to
increase circulation of oil, proper bonding of insulation material and to eliminate
complicated machining. In the new design instead of machining from a heavy
block of steel it is made from six thick steel plate, which is trimmed and ben...
A notched reaction carbon brush holder (07) for DC machines comprising a
carbon brush pocket (05) and a carbon brush (06), wherein the carbon
brush pocket being at an angle to the axis of rotation of the commutator
(04) of the machine, characterized in that the said carbon brush pocket is
provided with a chamfer...
The main object of the invention is to provide a robust design of stator winding of 3-phase induction motor for traction application such that the failure of stator winding on account of heavy vibrations and jerks is eliminated. One more object of the present invention is to provide strength to stator overhang porti...
Device for on-line monitoring of dielectric parameters (3.0) comprising
totally impregnated stator winding or job (3.1) placed in curing oven, one
end of the said job being connected to earth, floating (ungrounded)
excitation source (2.1) being connected to dielectric of winding of job
(3.1), a plurality of sens...
The main object of the present invention is to provide a system for making low resistance reliable electrical contacts from the rear and front of a solar cell with a four probe contacting scheme for accurate and repeatable measurement of I-V characteristics of solar cells. One more object of the invention is to prov...
The invention relates to an improved single/tandem wire submerged arc welding
machine for butt joint/ hardfacing of similar/different combination of filler wires,
the improvement is with two nozzles (4) is at least one additional two-wire
feeder means (2) with two nozzles (4) is provided to a conventional submerg...
The invention discloses an adjustable intermediate supporting device for mounting twin oil coolers including 3-way valves, comprising a first set of plates disposed on the upper portion of the device; a second set of plates positioned on the bottom portion of the device; at least two studs joining the first set of p...
Accordingly, there is provided a protective device for ultrasonic probes which
accommodates ultrasonic testing probes so that a continuous thin film of suitable
couplant is maintained while the probe is moving to have good acoustic coupling,
eliminating the error due to insufficient couplant during testing, makin...
A system of passive cooling and heating for building integrated photovoltaic building discloses a plurality of opaque and semi transparent solar laminates (1) are incorporated on the roof of the building when said laminates (1) generate heat during generation of electric power. False ceilings (4) are incorporated in...
The lapping device for in situ lapping of valve seat of turbine valves
comprises ;
a lapping ring (1) welded to a plate (2) having a hole at the center to
fix the stud (3) having threads at both ends;
two nuts (10) placed at the top and bottom of the plate (2)
fixing the stud (3) with the lapping ring (1);
a c...
A quad sector regenerative Airpreheater for circulating fluidised
bed combustion boiler comprises
one gas sector (01), first secondary Air sector (02), one primary
air sector (03) and second sec©ndary air sector (04)
compartmented by sector plates;
a cylindrical rotor (05) driven by the rotor drive (06) and
su...
The present invention relates to an improved micrometer device for accurate measurement of residual stress in thin-walled stainless tubes, the residual stress measurement involving twin measurement of outside diameter of the tube before and after slitting of the tube along its length at 180° to the weld seam, the tw...
A method of increasing strength and rigidity of stay ring of a large low head turbine by stiffening cylinders consists of reducing the mounting height of top cover (5), height of guide vane trunnion (4), diameter of guide vane stems (4) and size of guide vane servomotor wherein the stiffening cylinders (11,13) are
...
The method of fabrication of Photovoltaic modules of rating 12-volt 80 watt
incorporating 72 one third cut 156 mm size multi crystalline silicon solar cells
comprising the following steps; laser cutting of 156 mm full size solar cells into
2/3rd and 1/3rd portion; interconnection of solar cells and formation of a...
An alternate method for broaching fir tree groove profiles (X) in a large size gas turbine
rotor discs (C) discloses a combined milling and broaching operation by introducing an
HSS end mill cutter (A) formed by grinding to match the form of the broken or
damaged broach (8). Before doing the actual operation, a t...
Accordingly, there is provided a device for setting the amplifier gain in an ultrasonic testing means and probe combination, comprising; a single block having a projected face, the projection being more than one wavelength of sound to match the resolution requirements, the resolution requirements being one of a weld...
A new design is invented for fabrication of 12-volt, 120-watt photovoltaic modules incorporating 108 half-cut, 125-mm mono-silicon solar cells. The cell array utilizes 3 parallel strings of 36- solar cells. The module (size : 1239*789-mm2) is designed with standard lamination materials (high transmission tempered gl...
An improved optical fibre-based apparatus for measuring the temperature and stress developed in a steam -generator heat exchanges tube. Apparatus has an optical fiber-based sensor including an optical fiber which has a plurality of fiber gratings dispossed thereon at selected locations along the longitudinal axis of...
Power terminal for high current and high temperature application comprising:-
a plurality of semicircular structure of electrical conductor, having arrangement
of fastening through bolts on either side of the hot tube (9), thereby forming power terminals(11) in the form of a wheel; the inner ring (3) of the wheel ...
The present invention relates to the making of a polyurethane coating with titanium carbide powder added to it and the method of coating. Polyurethane is mixed with carbide based powder to form an erosion resistant coating for
hydroturbine components. Polyurethane is made from poly-isocyante and polyol. Poly-isocya...
A device (A) for drilling fan blade locking holes on a rotor of a large size turbogenerator consists of a universal mounting disc (10) having an outerhousing (11) foxed on top of it is attached to a base plate (20). This base
plate (20) along with a plurality of support plates (19) is fixed to the side columns of r...
The present invention relates to a portable device for chamfering holes of support tube plates adaptable to a condenser comprising a square shaped steel structure base frame (1) having four roller wheels (11) attached at the bottom of the frame and two vertical steel columns disposed at two opposite sides of
square...
A low reaction high speed steam turbine comprising a plurality of pressure stages, a rotor (25) having a plurality of rotor blades (1-12), a turbine casing (22), exhaust hood (23) housing the rear bearing pedestal, rotor (25) being mounted on a front bearing pedestal (21) and, wherein the said pressure stages are di...
This invention relates to a special fixture for manufacturing of seal wire used in fixing roots of gas turbine blades comprising a pair of special clamps(7)fixed in a block(1),the said clamps are operated by means of pins(12)and spring(9)to hold a job(J)in agroove(G)and are adapted to move vertically up and down and...
This invention relates to a process of producing nano-porous hydrated alumina in a powder form or in the form of aqueous suspension by synthesizing hydrated alumina material following a precipitation reaction between aqueous solution of aluminum nitrate (precursor) and aqueous solution/s of liquor ammonia or sodium ...
This invention relates to a single cylinder medium capacity reheat condensing
turbine, which comprises an outer casing assembly (1) consisting of two halves
(upper and lower) having a horizontal separation line; the upper half provided
with an integral valve chest (2) housing an HPstop and a first plurality of co...
An improved wear resistant pulverized solid fuel firing apparatus consists of an
apparatus body (03) and a nose (01) connected to the body by a connecting
piece. The nose comprises of an inner shell, a damping sheet cover and a heat
resistant steel shell. The inner shell is formed by wear resistant plates
(101,1...
A process for the quality control of fire resistant fluid (FRF)
comprising subjecting the FRF sample to Nuclear magnetic resonance
(NMR) spectroscopy to obtain the NMR spectra, calculating the ratio of
the area under the NMR peaks obtained for the protons present in
different electronic environments, followed by...
The present invention relates to a tool attachment device for small
diameter tool of different varieties and sizes adaptable to
horizontal boring machine comprises a step down cylindrical body
(1) having a hexagonal member (2) at the top the step down
cylindrical body comprises one larger diameter-adjusting coll...
This invention relates to a system for short-term creep testing of boiler materials
and weldments, the system being connectable to a data processor, the system
comprising; a cage (6) to accommodate a specimen holder (10) holding a
specimen (9); atleast one indenter (8) supported by an indenter support (7)
touchi...
Moulded insulated spacers (4.00) for hydro generators having a comb-like configuration
with a plurality of teeth (4.01) and openings (4.02) positioned between adjacent teeth,
characterized in that the insulated spacers are installed between lower layer of stator
winding bars (3.01) and inlet of pressing plates (1...
The invention relates to a process of repair welding of titanium tube to tube
sheet, with or with out filler wires having the same or different composition/
combination of filler wires, adapting the process of gas-tungsten are welding
(GTAW), comprising the steps of carrying-out a dye-penetrant testing of the
or...
In order to install IRD system in skytop type mast and substructure, the
substructure configure was redesigned keeping the mast identical to
accommodate the single skid IRD system. The whole structure was analysed on
STAAD S/W and integrity of mast and substructure was checked. A single skid
independent Rotary d...
A DC Series wound, four pole, forced Ventilated traction motor
for axle mounting on taper roller Suspension bearing,
characterized by,
Maximum Voltage : 1100 Volt DC
Maximum Current : 1350 Amps DC
Class of Insulation : Class "H"
Gear ratio : 4.94
Weight : 2950+50 kg
Ventilation : 2300 CFM
...
This invention relates to a smart firing card tester (12) which generates the required input signal for firing card under test (04). The preprogrammed microcontroller (13) in it provides continuous variation of input signal [14] & [15] automatically. The output of the firing card (04) is fed to the feedback input (1...
Accordingly, there is provided an all-angle-settable universal taper facing & turning device mountable on a conventional vertical boring machine, comprising a slide, a left shank, a right shank and a roller. The device uses
both the heads of the vertical boring machine tool to generate tapers. The device uses a til...
Accordingly there is provided an improved system for generating high power to drive locomotives which takes mechanical power from
diesel engine and generates AC power which is further rectified to DC to feed the motors which drive the locomotive and runs the train.
The alternator also has built in small DC generat...
High impedance high voltage winding (01) of potential transformer (A) for AC
transmission systems, the winding being made of special winding material/alloy having
optimal conductivity, mechanical strength and cross-section for the application,
characterized in that the increased impedance of the winding is impart...
Accordingly, there is provided a slip ring assembly is a product which is fitted on the rotor of traction alternator for collection of current from stationery brushes and feed to the field circuit in the rotor. The current going to the field circuit excites the windings and creates flux which further generates power...
FRP brush gear casing (10) comprising a hexagonal base (60), six
vertical sides (11,12,13,14,15,16) and a cover (80) detachably fixed on
top of the casing, characterized in that the casing is manufactured by
contact moulding process from FRP material.
The deficiency of the sealing device of prior art have been technically analysed and to minimize the problem, a new design of seal has been developed by using moulded nitrile rubber instead of rubber sheets. The device of the invention accomplishes the goal of preventing frequency of failure of conventional lip type...
Accordingly, there is provided an improved water type evaporator for cooling and
recovering heat from the syngas in pressurized fluidized bed gasification systems, the evaporator comprising a plurality of smaller diameter water tubes
arranged as a single bundle, enclosed by a pressure vessel which is having gas
i...
A method of producing non-eonducting exfoliated graphite based gaskets for Polymer
Electrolyte Membrane (PEM) fuel cells is disclosed.
The method comprises the steps of:
selection of exfoliated graphite powder, compacting the graphite powder
without any binder to form flexible integrated graphite sheets, cutting...
An electro-pneumatically operated assembly machine (M) for assembling aluminium
extrusions for control panel fame consists of a frame (1) that holds the aluminium
extrusions (11) and provides support to top plate (2), pneumatics and electrical
components. Four locating pins (3) hold the corner blocks (12) in corr...
This invention relates to a tool holding device in horizontal boring machines adaptable to perform groove machining in a vertical flange face comprising a shank (1) releasably attached and bolted to a guide plate (2) in which a cassette (4) is mounted by means of atleast one third bolt (5), the cassette (4) provided...
This invention relates to a process and device of bonding of babbitt metal on a substrate to produce babbitted bearing by pouring molten babbitt metal in the molding space (8 and 10) in a bearing shell assembly (S) to form an integrated bonding of the babbitt metal with a HP liner (7) on directional solidification o...
One common type of conductor miountlng device (Rlgld/Slidlng) is installed
for all the three phases of the busduct and throughout the entire length of busduct. Three insulators are plbced and. disposed at 90 degree apart
between first conductor to second conductor and agaln 90 apart from
second conductor to thlrd...
A device for structural health monitoring using laser beam consists of a hollow
tube [07] made of thin metal and is capped with solid blocks [01] and [02] at
both ends. The solid blocks have cavity at the centre for fixing the laser source
[03] and sensor [04] while the solid block [01] contains a low pressure la...
Method for frequency compensation of thyristor firing pulse generation circuit based on ramp comparator comprising steps;
- extraction of +ve sequence component of the three phase synchronizing
signals;
- determination of frequency deviation (∆f) of the extracted symmetrical component;
- calibration of control v...
A device for reaming a taper pin hole in the joint plane of inner guide plate of a diffuser of a turbine consists of a stem (3) having threads at the both ends of length for fixing to the body at one end and to a sliding block (4) at the other. The sliding block (4) has a slot for adjustment of the stem (3) for alig...
A DC auxiliary generator (3) having a shunt field (1) consists of a plurality of shunt field coils (4) which are connected in series-parallel combination to enable battery charging at low idle speed of a diesel engine of a locomotive. The generator is made to fit in the available space in the locomotive and is opera...
A method for determination of effectiveness of Post weld stress relieving heat treatment in ferromagnetic materials through measurement of coercive force, comprising steps magnetizing the area of the job selected by the probe
demagnetizing the selected area; measuring the coercive force; comparing with standard coe...
This invention relates to integrated gasification based power generation; especially pressurized fluidized bed gasification based systems used for any grade of coals. More particularly, the invention relates to an improved bottom ash extractor device for pressurized fluidized bed gasifier.
The present invention relates to a kit for portable application in off-load testing of
Electronic Controllers. A kit (1) for portable application in off-load testing of
Electronic Controllers comprising a single phase transformer (2), a power supply
card (3), a firing circuit card (4), an AC amperemeter (5), an A...
This invention relates to a split type spring plate for supporting the operative bad the thrust bearing of a genorator shaft (s) in a hydrogenrator, comprising two spring plate segments (1) each having two joint flanges for relesably coupling to each other; with two locating dowel (4) to accurately locate said sprri...
The present invention provides a new configuration of the wire feeder which can simultaneously use multi wires in two different nozzles at different feed rates for different current rating. This new wire feeder substantially enhances the production rate compared to the conventional submerged arc welding process. An ...
Structure analysts often use commercially available finite element analysis (FEA) packages such as ANSYS for modelling of standard structural beam elements. Correct and consistent inputs regarding area, moment of inertia, offset distances, extreme fibre distances are essential for obtaining correct results. There is...
Abstract not available
Abstract not Available.
The present invention relates to the aerodynamic design of moving blades, pertaining to later stages of axial steam turbines where the inlet flow is nonuniform over the blade height. The claim made herein is a set of six invented transonic blade profiles which can be used to develop various type of 3D twisted blade...
A device for circulating cooling water through equipment mounted on a 400kV and
above insulated platform consists of two vertical hollow insulator columns (9)
which are installed adjacent to each other beside a platform (2) having platform
mounted equipment (1) mounted on it. The vertical hollow insulators made o...
Abstract Not Available.
A device (D) with clamping and indexing arrangement for vertical drilling
operation on taper surface of core press ring of all types of turbo generators
consists of a T-shape steel plates fabricated base (2) having three threaded
holes (9) near each end of three arms (10) of the base (2) on which three
rollers (...
A method for in situ repair of burnt out tile holders inside flame tube (2) of
combustion chamber of a gas turbine consists of selecting a matching filler wire
to tag weld the damaged tile holders (1) when a piece is cut from a fresh tile
holder almost matching the profile of the damaged tile holders (1) to provi...
A method of salvaging overdimensioned machined parts comprising the steps of
shaping of mis-machined/damaged area of the machined parts and roughening the
surface of oversized machining area using a mask to prevent damages and applying of
HVOF coating on the roughened surface of oversized machined parts and machi...
The invention relates to a device for on-line measurement of longitudinal
dynamic distortion of panel-type welded structures, comprising a support means
having a horizontal base plate (1), and a vertical plate (2) attached to the
horizontal base plate (1), the vertical plate (2) comprising a first surface
includ...
Accordingly,there is provided a SPV-Grid-DG hybrid system which optimizes the use of solar power in a given capacity and caters the reliable power to user round the clock.The system uses three energy sources SPV,Grid and diesel generator.Priority of the system is to fully utilize the power from the connected photovo...
The fixture (A) for drilling holes on diode wheel consisting;-
- a base plates (7), clamped on machine base;
- a top plate (6) being set at an inclination eg. 15° to the horizontal plane;
- a rotary table (2) mounted on top of inclined plate (6);
- a plurality of clamping plates (1) in steps fixed on rotary tabl...
An improved commutator for electrical machines having reduced weight
with reliability adaptable for strategic application; comprising:
- a plurality of current carrying copper segments (1) connected to a
number of armature coils of the electrical machine;
- atleast one mica separator sheet (5) ,dispo~ between ea...
Accordingly, an enclosing device for the subzero temperature CTOD testing comprising:
a box shaped stainless steel container for housing the subzero temperature liquid coolant bath which can be used for immersing the CTOD test specimen;
a insulation side cover for minimizing any heat transfer from the stainless st...
An improved process and tooling for end cutting operation of generator stator bar
conductors consists of assembling a slitting cutter (C) on the step dia of an arbor (S)
when the tool holder comprising of the arbor (S) and the cutter (C) is assembled in the
machine spindle. The tool holder (T) comprising of the a...
The invention relates to a high pressure isolation valves for drain/ vent/
bypass and other similar applications comprising a body or shell (01)
which encompasses the fluid; the body (01) made out of barstock with an
inlet drilled at specific angle to the inlet piping axis, and an outlet drilled
at specific angl...
The invention relates to a multiple port device for extraction of ash through a
side of a pressurised fluidised bed gasifier, comprising a gasifier (01) lined with
refractory bricks means enabling production of syngas with permissible
composition and calorific value, the fluidized bed at a desired height and
tem...
The present invention provides a method to fabricate silicon dioxide thin films, in
multi-layer configuration, sputter deposited on Si3N4-coated silicon substrates.
Oblique angle deposition is employed to obtain low-refractive index films (in 2, 4
and 6-layer design, each of layer thickness 50-nm) and reduced ref...
A thermo-mechanically treatable steel having selective low alloy composition free of micro
alloying and high Manganese content to achieve selective microstructure adapted to
provide higher improved strength-ductility combination and corrosion resistance. The
desired properties of strength, ductility, weldability ...
The present invention provides appropriate methods for improving the turn-
off characteristics of power semiconductor thyristors, especially where the
observed delayed turn-off is not attributable to the usual causes related to
the recombination rate of electrons and holes. The invention studies the
impacts of a...
In welding of grooved joints, the significance of root pass welding is well known.
To produce satisfactory root pass weld, proper settings w.r.t. joint preparation
involving adequate lip thickness, joint included angle, root gap, joint fit-up,
proper selection of welding technique, welding arc parameters etc. are...
Development Of Multipurpose Drilling Device For Working On Large Size Components Of Turbo Generators
The present invention relates to development of multipurpose drilling device for
working on large size components of turbo generator.
At least two cylindrical shape boring bars having diameter in the range of 18mm
to 60mm and length in the range 40mm to 200mm for threading operation of
holes M36 to M125 on horizontal boring machine are designed and configured.
One of the boring bars shall be suitable for holding a threaded tool and for
making ...
The present invention relates to a method of manufacture of porous ceramic products
filters and candles of complicated shapes and sizes adaptable to high temperature gas
filtration of particulates from hot flue gases or the coal gas comprises a casting which
comprises a cavity and a core that are made of polyprop...
. An automated test set-up (1.0) comprising a nickel plated temperature
controlled vacuum chuck(1.2),a light source(1.3), a digital temperature
indicator(1.4), a solar cell(1.1) which is to be tested being positioned on said
vacuum chuck and firmly held by said chuck, spring loaded current probes(1.5)
and voltag...
1. A holding fixture (1.0) for precise radial and angular location of kicker stage nozzles
comprising a circular steel plate (1.1) a plurality of weld neck flanges (1.2) carefully
located and fixed on the circular plate (1.1), neck flanges being supported by tubes (1.3)
which are welded to the back of the neck fl...
The present invention provides two methods of hermetic sealing of stud-type
power semiconductor diode that is especially used in rotating applications. Both
the invented methods viz. oven-heating method and induction-heating (by eddy
current) method, employ soldering on the internal surface of the joint between
...
Method of autogenous laser welding without addition of filler providing self
melting joint of a straight butt at the end of the flat/fin or a chamfer in the fin
comprising steps:-
-making a self melting joint for welding as for example with tube to fin/flat,
where the tube comes in contact for welding;
- checki...
An apparatus of one sided Electrogas welding (EGW) in groove joints consisting a
frame (11) comprising a welding torch and wire feeding device (13), wire spool (14) and oscillation arrangement (15); a front copper shoe (21) which is spring loaded and attached to the frame (11); a welding torch and wire feeding devi...
The invention relates to an improved control system for combustion control of a
boiler of a steam generator, comprising an embedded controller (4) interfaced to
an on line coal analyzer (3) and operably connected to a distributed control
device (5) of a boiler, the system is configured to receive input signals
r...
A composite two piece runner hub (1) for Kaplan type hydro turbine comprising an outer
potion (1.1) and on inner portion (1.2) having a central bore (1.3), characterized in that the inner portion (1.2) is a forging.
This invention relates to an improved flame detection apparatus having an
electronic circuitry for producing outputs representing presence or absence of
flame comprising: a lens barrel device (1), which collects and focuses the
incoming light signal; a fibre optic light guide (3) which receives the incoming
ligh...
A Process Of Machining Steam Turbine Blades With Increased Productivity And Lower Manufacturing Cost
The process of machining steam turbine blades consists of machining the root
and shroud fillet of blades by insert type cutter of 10 mm diameter, machining
thickness and rhomboid finishing of the blades by insert type cutter of 80 mm
diameter and then machining root radial slot operation of the turbine blades by
...
Fixture (A) for manufacturing connecting plate assembly of air preheaters comprising a
plurality fitter"s bars (03) which are grouted on the concrete shop floor and levelled, a
plurality of fixture beams (01) with adequate stiffners (02) being positioned on said fitter"s
bars and firmly secured to the fitter"s ba...
A method of uninterrupted on load change over of fuel system from gas fuel
mode to liquid fuel mode in a gas turbine consists of receiving the signal for
change over to liquid fuel from gas fuel and opening of liquid fuel stop valves
(01) after 5 seconds of receiving the signal for change over when fuel forwardin...
According, there"is provided a high voltage generator bushing device for high
voltage, hydrogen cooled electrical generators comprising an epoxy body, a high
tension (HT)-conductor and locking system. The epoxy body comprises
brass/steel sleeve and a grounded aluminum/steel insert. The grounded
terminal is inser...
The invention relates to an improved support device for an internally refractory lined large back pass inlet duct in a CFBC boiler, the back pass inlet duct comprising at least two inlet pipes (1) internally provided with a plurality of circular duct (2) each disposed at a specified distance throughout the length of...
The invention relates to a scrapper-assisted fuel feed nozzle device for feeding high-
moisture fuel in Bubbling Fluidised Bed combustion (BFBC) boiler, comprising at least
one accelerating nozzle (8) for transferring fuel (coal) supplied through a coal feed
line (9), the nozzle (8) accelerating a low pressure ai...
A Multiple Port device for Bottom Ash Extraction in Pressurised Fluidised Bed
Gasifiers comprising, a water cooled flat plate distributor means (01) for uniform
flow distribution of air and steam mixture and ensures uniform temperature
distribution above the bed and also holds the bed to a particular height with
...
The invention relates to a device for determining whether a Radiography
Technique (RT) is capable of achieving the desired sensitivity, comprising a lower
member (1) formed of a material identical to that of the job machined with an
angle of at least 45 degree at the wedge; an upper member (2) formed of a
materi...
An alloy composition For discharge emitting electrode wires, comprising Phosphorous-0.005% to 0.050% by weight, Sulphur- .005% to 0.050% by weight, Chromium-5% to 30% by weight, Silicon-
0.1% to 1.0% by weight, Molibdinum-1.0% to 10% by weight, Carbon- 0.001% to 0.1% by weight, Copper-0.25% to 5% by weight and mang...
A multifunction numerical line protection relay with interoperability comprising of:
- power supply module (6.1);
- processing module (6.2) which comprises of real time module (201), non-real
time module (203), IEC 61850communication module (204) and interprocess
communication (202, 205);
- transformer module (...
The invention relate to improve the technology in submerged arc welding process, for feeding the wires from the two wire spools using two integrated wire feeding system with single motor shaft and power delivering from one power source with one control system is required fro performing the multiple arcs using single...
A rotating equipment like a turbo-generator is supported on two journal bearings. These bearings are provided with oil seals to prevent the circulating lube oil from leaking out of the bearing oil circuit. There are several types of oil seals in operation, dependant on the size of the bearing, speed of rotor rotatio...
The invention discloses a method and an improved system for carrying out
magnetically impelled arc butt welding process (MIAS) for welding of boiler
tubes. The magnetically-impelled arc butt welding process (MIAS) is a solid state
joining technique that uses arc heating of the components to be joined, the arc
be...
A method of edge isolation of thin film solar cell module by sand blasting tonsists
covering the active area of the solar cell module with a glass or plastic sheet
leaving the four edges of the cell and then blowing sand on the surface of the
four edges till thin active layers of solar cell module are removed and...
An in-built chevron type moisture separator device for small capacity
turbine having wet steam at turbine outlet adaptable to proper
separation of wet steam and dry steam comprising:-
- a vertical capsule shaped steel structure (1) having supported
by 4 supporting legs (11) at the bottom;
- an assembly of 4 nό"...
This invention relates to a device for lifting and positioning of a Technological
Shaft in horizontal position including easy and safe assembly with a Turbine
rotor, the device comprising; a frame (1); a roller support (2) for supporting a
first diameter of the technological shaft (TS); a roller support (3) for s...
An improved suspension bearing device for traction motors in Diesel-electric
locomotives, comprising a tapered roller bearing assembly (5, 8) interposed in a
suspension tube (7) which being assembled with the traction motor, the
suspension tube (7) having at least one machined flange (15) mountable to a
magnet f...
A common DC traction motor for both meter gauge and cape gauge Diesel-
electric locomotives comprising a high permeability steel magnet frame (19), an
armature having its core assembled on the shaft (26), the armature core having
lap wound conductors connected to a copper commutator, a brush gear having
four bru...
The invention relates to an improved process for carrying out GMA welding with two different shielding gases comprising the steps of alternatingly supplying to a GMAW torch at a preset gas pulsing frequency. The two different shielding gases are directly supplied to the GMAW torch without any pre-mixing and backflow...
Accordingly, there is provided an improved method of strap support in hanger
tube for wear protection in BFBC boilers comprising a hot air distributor plate
disposed at the bottom boundary of the combustor enclosed by a membrane,
said plate having a plurality of air nozzles, a hot air source for continuous supply...
A method for increasing the surface hardness by using laser treatment of
multilayer HVOF coatings comprising: fabricating the surface to be coated to
achieve desired surface roughness; spray coating the surface with nickel based
self fluxing alloy; spraying tungsten carbide based cermet powder; subjecting the
co...
The invention relates to a nozzle assisted anti erosion device is provided to
protect the interface of water wall (5) and refractory (3) against erosion induced
by a directional change of the solid reflux (4) on the water wall in a circulating
fluidized bed combustion boilers. The nozzle assisted anti erosion dev...
An improved centrifugal compressor casing consists of a casing (B) with thicker
solid end wall (1) for housing dry gas seals and drilling gas connection holes (2).
A plurality of lube oil discharge chambers (3- Side cover) are bolted to the casing
(B) for providing adequate lube oil holding space. The said casing...
The invention relates to a method of reducing the internal flash generated during
a solid state joining process of thick-walled tubes, with a reconfiguration of the
internal bore of the tubes, the method comprising the steps of carrying out an
internal bore configuration of the tubes with a bore depth of 0.5 to 1...
An improved Hot gas Generator system for uniform heating of the bed in a
pressurized fluidized bed gasifier, comprising a circular duct (02) forming a
housing; a cold air pipe (01) to admit cold air to the housing (02); a flame
stabilizer means (03) disposed in the housing (02) to stabilize and retain the
flame;...
An improved deaerating condenser for a steam turbine capable of deaerating large quantity of makeup water and reducing the dissolved oxygen level (DO- level) at the outlet of the condensate, the improvement tube layout (3) inside the hotwell portion (1) of the condenser is modified to ensure a thorough mixing of the...
According to the invention the application of a compressive load for sealing the
interconnect and the metal frame independent of the fuel cell is made possible. Thus,
it is possible to apply high compressive load to the seal rendering it to be most
effective. This also eliminates the risk of breaking the comparat...
This invention relates to a core current sensor assembly comprising an insulating
tubular frame (1) with solenoid winding (6) constituted by turns wound on the
entire periphery forming a secondary winding; a return wire (5) running along
the axis of the sensor acting as electromagnetic shields, the terminal of th...
This invention relates to an improved apparatus for performing tandem
submerged arc welding, comprising; a single wire feeder (2) capable of
simultaneously feeding two wires; at least two spools (1a, 1b) feeding the wires
into two torches (3A, 3B), the spools (1a, 1b) being driven by a wire-feed motor
(2); a con...
This invention relates to a device for water-level control in high pressure heaters
in process steam generation plants in particular thermal plants, comprising; a
closed chamber (2,3) with the inside wall having a ceramic insulator (2) and the
outside wall constituting a steel tube (3), the ceramic insulator (2) ...
The present invention relates to a new device designed for transmitting the
force required for wheel removal at the wheel hub in place of wheel rim. The
force required to remove the wheel with this art has been recorded as 150
tonnes which is considered safe for the operator. The introduction of such
device put ...
Accordingly, there is provided an improved brushless synchronous alternator, in
particular for oil rig application which is applicable under load conditions of
drilling operation of oil well during critical drilling, deep drilling and angular
drilling, self start characteristic and low power factor condition. The...
An improved arrangement of retaining ring (3) assembly consists of a plurality of retaining rings shrink fitted at two steps on either side of a generator rotor end winding (2) wherein a snap ring (4) is adapted in the existing groove to arrest the axial movement of the said retaining ring (3).
...
The invention relates to a pressurized fluidized bed gasification reactor system to convert solid carbonaceous fuels into gaseous fuels, comprising a plurality of coal feeding device (01, 02, 03, 04) for feeding solid fuel particles into the gasifier (05) the gasifier (05) constituting an elongated pressure vessel i...
An improved method of prevention of erosion in CFBC boiler consists of HVOF
thermal spraying a first coating of at least 20 microns for a length of at least 300
mm and second coating of at least 20 microns for a length little less than the
first process of spraying continues till a taper section of coating of at ...
A water cooled diode module (A) comprising:
- two presspack diodes (01) sandwitched between three water cooled AC busbars (02) with insulating spacers (03) on either side, the diodes being clamped with four bolts (04) between end plates (05,06),
- an assembly of disc spring washers (07) alongwith a load compensato...
The present invention relates to a process for separation of carbon dioxide from fuel gas and flue gas combustion products using ammonia absorption comprising the steps of entering the fuel or flue gas (10) through a heat exchanger (1) for releasing heat and discharging from the heat exchanger (1), the fuel or flue ...
This invention relates to a radially vented interrupter for high voltage high power
gas circuit breaker, comprising; a compression volume (01) which allows storage of cold gas for compression including collection of fresh gas during closing operation; an expansion volume (02) which allows a direct exposure of the
...
An improved device of gate testing consists of a fabricated cubical structure (C) erected on the concrete foundation (B). Levelled filters"bars (11) are erected on the floor for ensuring the verticality of the gates (12). Inspection platforms are provided at different elevations for easy approach. Rigid fabricated c...
An intermediate pressure inner casing (1) suitable for a single cylinder medium capacity reheat condensing turbine comprises a casting assembly consisting of two halves (upper & lower) having a horizontal parting line with two sets of paws (5,5), one at front end and the other at rear end, for vertically supporting ...
This invention relates to a friction welding process by adapting ferritic stainless
steel rods, comprising the steps of rotating the weldable components in a friction
-welding machine; applying an upsetting force; and allowing the components to
undergo a post-weld annealing treatment. The post-weld annealing trea...
An electrical edge connector (12) for BIPV solar module laminates having
edge (11), comprising pin type connectors (13) and bypass diode (15) positioned in a
cavity of said connector, a plurality of electrical connecting strips (14) which are
brought out from between the glass shuts of the said laminates and join...
The invention relates to an improved fan throttling device (03) for testing of fans
adaptable to power and industrial boiler, comprising a drive means comprising a lead screw assembly (10, 24) having a lead screw (10) and a flange (24);, and a plurality of linear motion guides (05), the lead screw assembly (10, 24)...
An Improved tlanged device tor directly connecting a plurality ot FOAs to an external vibration monitoring system, the FOAs being mountable on the endwindings of a turbogenerator stator, the device comprising; a metallic conical cylinder (l) providing routing ot cables from inside the generator casing, the conical a...
A photovoltaic module integrating structure in building with a provision of post installation maintenance consists of solar module laminates (3) forming solar modules (S) are mounted in columns facing south with a tilt of latitude angle ± 15° from the latitude angle of the place of installation. The solar module lam...
A process for orbital TIG welding of boiler tubes of grade SA 213 T11 comprising the steps of:
- cleaning of the joining surfaces of the tubes(1) to remove oxide films, oil coatings etc;
- preparing the cleaned edges to have a square butt joint by machining;
- fitting the tubes (1) to be joined properly at the jo...
The present invention relates to a newly developed jig for projecting the bending of glass sheet during TCO film deposition inside a hot furnace comprising "c" shaped configured article made of stainless steel sheet having a open gap between the upper long member and lower long member of "c" shaped at one side throu...
The invention relates to an improved flameproof terminal box (T) adaptable to electrical apparatus, having a fault-withstand capacity of 500 MVA for a duration of 0.25 seconds, comprising a first compartment (1) substantially cylindrical in shape, accommodating a plurality of terminal bushings (2), and having at lea...
The invention relates to a Light Management system in a Building Integrated Photovoltaic (BIPV) building, comprising, a plurality of solar PV-laminates (1) covering the roof and window s of the building, which under sunlight being enabled to generate electric power including allowing ingress of at least partial sunl...
Accordingly there is provided a bearingless support structure for the ESP, in
which flexible means are provided in the support structure so as to reduce the thermal stresses and forces due to expansion. Accordingly, arrangement to assess the level of thermal stresses and other forces developed is provided such that...
A condensate collection tray system for improving deaeration in a steam condenser consists of a plurality of trays (8) located in the cooling tube nests (3, 4, 5) of the condenser and are connected in between the supporting plates and tube sheet and welded to a plurality of supporting plates (11) for collecting the ...
A novel coating comprising a layer of high velocity oxy fuel (HVOF); a intermediate metallic coat;
a thin layer of organic based paint for better adhesion and; a final coat of polyurethane;
The invention relates to a low-output voltage sensor for switchgear protection,
comprising an insulated HV resistor (1) having high resistance and high-power
handling capacity with substantially no inductance, and being connectable to an
external power circuit, the HV resistor (1) provided with at least two first...
An inter stage metallic device (2) for improvement of surge arresters (S) consists of thermally conducted inter stage metallic device/element made with a high conductive electrical grade material and is provided with suitable flow channels (4) for circulation of gas/liquid from one block to another and having an inn...
The inventors developed the concept of the improved casing structure of the
invention based on the available diagonal or corrugation for the large ESP-
casings. Accordingly, there is provided an improved casing structure for the ESPs
comprising at least profiled plates provided with corrugations such that the
ca...
Accordingly, there is provided a high fault current proof insulator for high voltage electrical appliances comprising an epoxy body, a high tension (HT) conductor and locking system. The epoxy body comprises brass/steel sleeve and a grounded aluminum/steel terminal. The grounded terminal being configured on an outer...
A corrosion inhibitor consisting of
(A) a condensation adduct which is prepared by
(1) reacting about 1 mole of a compound containing 1 to 3 numbers
of active hydrogen atoms selected from the group consisting of an N-alkyl
acetamide, a polynuclear Hydrazide, Hydroxamic acid and N-substituted
alycyclic amine;
(...
The invention relates to a process for burning the shunt paths generated in the manufacture of thin film solar cell modules, being manufactured by carrying-out the steps of depositing on a clean glass substrate a transparent conducting oxide (TCO) layer followed by patterning the TCO-layer by laser scriber; loading ...
Reclamation of silicon wafers from rejected solar cells minimize the recurring losses. The invention provides a suitable chemical composition which is applied at room temperature to the rejected monocrystaline silicon solar cells to remove sintered silver, silver-aluminium and aluminium metal pastes from the cells c...
A solid state tap - changer for phase shifting transformers with a plurality
of tap changing positions (0,1,2 ), comprising:
A plurality of thyristor valves (THl, TH2 ...), one for each tap position; and
A controller (e) for automatic changeover form a lower to an upper tap, or
vice versa, depending on current/p...
This invention relates to a dual-mode operable rectifier - mounted brushless alternator, in particular for ballast cleaning machine application, which is further applicable under load conditions on traveling mode. In the Travel Mode, the alternator supplies the DC power to the traction motors of the locomotive in
c...
Abstract not available
An improved end sealing device adaptable to centrifugal compressors, comprising: an end labyrinth (1) disposed in a volute zone (8) of the compressor, the accommodating space in the volute zone (8) being created by reducing the length of the spacer (3); and a dry gas seal (2) constituting a secondary end sealing mea...
According to the invention, the partially cantilevered block foundation for axial fan will have a cantilever slab, supporting the end pedestals of the diffuser.
The cantilever will be above ground level leaving a 100mm gap between ground level and bottom of the cantilever. The cantilever slab will be taken from t...
A load priority controller has been developed. The lighting and fan loads have been segregated in various priorities and a critical load (emergency lights)is given highest priority. The solar modules and the loads are designed such that at noontime,all the loads are supported by the generation of electricity by the ...
In welding of pipe joints, the significance of root pass welding is well know. To produce satisfactory root pass weld, proper settings w.r.t. Internal diameter (ID) matching, joint pre-parathion involving adequate lip thickness, joint included angle, root gap, proper selection of welding technique, welding arc param...
Accordingly there is provided a fluidized bed char combustion device adaptable
to a fluidized bed gasification system, the system comprising a gasifier, atleast
one participate collection means retaining the ash and char particles separated
from the gas, and a bulk solid recirculator provided optionally for recyc...
Accordingly there is provided an apparatus adaptable to GTAW process to alternate supply of shielding gases to the welding torch including optimization of gas pulsing frequency for improved weld quality. The apparatus comprises at least two hoses carrying two different shielding gases from two individual gas cylinde...
A Method Of Producing Silicon Power Semiconductor Thyristors With Narrow Reverse Recovery Parameters
The present invention provides a method of controlling reverse recovery parameters of silicon power semiconductor thyristors through a two-step method comprising an initial coarse-correction using gold diffusion at wafer-processing stage followed by exposure of fully fabricated chips to gamma rays for fine-tuning. A...
In conventional Tungsten Inert Gas welding, due to the electrically active base metal, considerable penetration and hence dilution of the deposited filler metal takes place. Further, the electrically neutral and cold wire feeding leads to low metal deposition rates in Tungsten Inert Gas welding. The new invention ad...
Fixture for road transport of large turbogenarator stator with weight around 270 tons having support width more than trailer width, comprising:
at least four structural members configured as a closed box type structure;
a plurality of support plates for releasably coupling by means of locking means on the turbo ge...
This invention relates to a shell and tube heat exchanger comprising a shell with a shell ever held thereto; an inner casing disposed within said shell; a fixed tube sheet and floating tube sheet for holding a plurality of tubes; a shell inlet and outlet; chara :terized in a sealing arrangement comprising; an inner ...
This invention relates to a device for recidual stress measurement of a component in inclined position comprising the features of; a precalculated designed and fabricated holed aluminium plate (8) mounted on an inclined surface of the component by bolts (7); a tripod equipment consisting of a base (2), a circular pr...
This invention relates to a device for holding cutters with tapped hole taper shank in machine spindle having capability to hold tanged end taper shank cutters only comprising of:
a)a draw bolt (1) fixable on tapped hole (H2) of taper shank of cutter having a threaded hole(H1)for fixing of wedge (2) and a taper s...
According to the invention there is provided an improved dressing unit which is
configured such that instead of straight body parallel to the base it is machined
in taper portion in such a way that the dressing point of the dressing unit is
capable of approaching the grinding wheel without fouling with the shaft....
A process for producing a plasma-deposited multi junction soter celt device called
an amorphous silicon solar cell module comprising. a plurality of plasma
deposited amorpboua silicon soter cells consisting of; a transparent sheal glass
plate coated with a transparent conductive oxide (TCO) layer by an atmospheri...
A device for automatically measuring and cutting interconnect from bobbins in
the measuring process of Photo voltaic (PV) modules comprises a sequential
follow steps.
(a) 1st of all switching on the machine.
(b) Loading the bobbin with solder coated copper strips
(c) Set to manual mode in panel whereas setting ...
A device for controlling and monitoring Electrostatic precipitator (ESP) comprising a plurality of Graphical Operator Terminal (GOT) which communicates in a multimaster communication process to all of several HVR controllers (8) through a open standard bus (5), including a Controller Area Network (CAN), and operably...
This invention relates to an enhanced Peripherial Component Interconnect (PCI) based device (10) for monitoring and control of Electrostatic precipitators (ESPS), comprising: a core module based processor (10) for receiving and transmitting data frames through hardware circuits (05, 08), the hardware circuits (05,08...
The invention relates to an improved system for monitoring the ash level for electrostatic precipitators (ESP) in manufacturing plants, the system providing wireless communication interface between the field-level controllers and the plant-level controller of the ESP, the system comprising, a plurality of sensor
el...
Submerged arc welding has several advantages like deep penetration, high
deposition rates higher welding speed etc. However, submerged arc welding is
characterized by high heat input and consequent higher dilution. In joining of
metal and their alloys, the main process requirements from productivity point of
vi...
In the performance of fusing operations which involve the application of force
and heat to a workpiece, the heat being generated at least in part by electrical
resistance heating resulting from passage of an electrical current through an
electrical circuit which includes the workpiece and typically also a fusing
...
This invention relates to a method of restoration of stator winding for global vacuum
pressure impregnation (VPI) wound generator stator comprising the steps of:
detecting the fault of winding at the slots in the top or bottom bar location of a
stator; removing faulted portion of the top bar only end to end when ...
This invention relates to a method of producing turbo generator stator with
winding composed of end connection in Double Roebel bars and TG stator
produced thereof comprising of making split between two turns of each top and
bottom bar each turn having several insulated copper strips being Roebel
transposed for ...
This invention relates to a furnace refractory bricks to accommodate heating coils
for building furnace floor/ bed and a method of producing the bricks furnace
refractory bricks for building furnace floor / bed with improved self life and for
optimized uniform heating of furnace comprising: a two part split assem...
The present invention relates to a jig for drilling axial holes for core bar housing
turbo generator rotor/exciter rotor comprising one "O" shaped thick steel plate with a plurality of peripheral holes and a plurality of centre holes co-axially matching with the peripheral holes and one face of the jig to be matche...
In the invented on-line continuous DSP based stator end-winding vibration
monitoring system basically the vibrations are sensed by highly sensitive
piezo-electric transducers which convert the mechanical vibration into
electrical signal. The electrical signal is conditioned in the input signal
conditioning ampli...
This invention relates to a device to enhance life of shaft seals of
reaction type hydro turbines run by silt laden water comprising of a
pump ring (09) having radial holes drilled into it to constitute
pumping holes, springs (13) mounting plungers (15), diaphragm
plugs (17) to adjust flow of water, an additiona...
method of manufacturing a compact single unit single phase
transformer with choke units, series reactor and cooling equipment
comprising the steps of:
making a tank (5) which is internally partitioned into two chambers,
positioning the main single phase transformer (1) in one partition of
tank (5) and chokes (2...
This invention relates to an integrated shut-off device in a fuel-firing system of a boiler, comprising an elbow-shaped gate body (1) with ceramic lining, the body (1) is so configured to allow an approachable space for maintenance having provision of a ceramically-lined rotatable disc (2). The body (1) is connected...
Accordingly there is provided an improved hot gas filter system in which a safety
filter made of sintered porous ceramic is mounted on the main ceramic filter by
means of at least one high density ceramic gasket seal within a secure filter
holder assembly. Such a safety filter is more porous and does not interfer...
The invention relates to power transformers,in particular a 40 MVA transformer adaptable for testing of power transformers of different ratings fro 11 kV to 400 kV.
A method for in-situ deposition of graded-index silicon nitride comprising; Making silicon nitride (SiN) coatings in a PECVD tubular furnace on mono-silicon wafers; Depositing at least two layers of SiN at different flow rates in a monolithic design; Subjecting said deposited mono-silicon wafers to various steps of ...
This invention relates to a moving contact Me (05), Fixed (Fc) (01), Me shield (06), Fc shield (04) and maintaining of diameters of Me, Fc, Fc shield and gap (D) between Me and Fc shield in a correlated relationship to avoid secondary breakdown of the arc and to maintain highest field at the central axis and to avoi...
The present invention discloses a self-masking and low-energy
Reactive Ion Etching (RIE) process for texturization of large area
multicrystalline silicon (mc-Si) wafers for use in solar cell processing.
The safe and non-toxic sulfur hexafluoride and oxygen (SF6 & O2)
reactant gases, under the influence of RF (13...
TITLE: METHOD OF DESIGN AND DEVELOPMENT OF PNEUMATICALLY
OPERATED CUTTING MACHINE FOR PREPARING THE DIN RAILS USED IN
CONTROL PANELS
The invention relates to a pneumatically operated machine for cutting DIN-rails
with burr-free square edge installable in control panels, comprising a machine
table (1) for accomm...
The present invention relates to an improved gear-train arrangement with traction alternator.More particularly,the present invention relates to an improved geartrain arrangement coupled with a main gear attached to shaft of traction alternator which in turn transmit power to the auxiliaries comprising one auxiliary ...
To achieve the objects, and purpose of the present invention, a method has been developed which allows drying of porcelain components using an environment friendly process. The processing has been carried out using a microwave furnace operating at 2.45 GHz frequency. This method enables reduction of cycle time by 70...
The invention in this case is based on the innovative concept of carrying-out the
repair work without taking out the stator winding bar and simultaneously
ensuring reliable leakage-free quality of the repaired job / brazed joints.
This objective is achieved by the invention of an innovative method of metal
jacke...
The isolation device of present invention has a plurality of actuators mounted on extension of gate guides. Since the load is shared by two actuators, the size of the actuators is also reduced to nearly half of its original size.
At the end of the travel, the isolation plate seats on the round parts locked in posit...
The present invention relates to a centre holder for axial support of turbine rotors
comprises a cylindrical configuration having a central cylindrical shaft (1) and the
cylindrical shaft (1) having a conical shaped at front end and the shaft (1) is fitted with
a flange (3) by a plurality of screws (2) and the fl...
The task of controlling various parameters of grounding system of
high voltage substation particularly in gas insulated substation for
highly integrated substation having limited ground grid area and
located in high resistance soil zone have been successfully solved
in this invention. The steel reinforcement use...
The invention relates to an improved blast interrupter of a puffer-type gas insulated circuit breaker, comprising a piston (13) movable in a metallic blast cylinder (12) for interrupting a high electric current. A spring-loaded device (19) is interposed on a gas-exhaust path (23) to regulate the pressure of the blas...
The invention relates to a device for assembly and machining of a grid assembly in a steam generator, the grid assembly comprising a plurality of main grid flats (A), each having angular slots in several locations for establishing an interconnection among them, the angular slots accommodating a corresponding
number...
A system for elevating and lowering a platform 202 is provided. The system comprises projections 204, lifters 210, driver 212, and power transfer mechanism. The projections 204 project out of the circumference of the platform 202. The projections 204 are disposed on at least two opposite sides 228a and 228b of the p...
The invention relates to an improved device for cleaning the fireside deposits of fossil-fuel fired boilers, comprising a gearbox assembly (01) having two output shaft, a lateral output shaft out of said two out put shaft provides a traverse
movement to a travelling carriage assembly (02), and an axial shaft with s...
This invention relates to a device for conducting flange test on boiler tubes, the
device being adaptable on a standard universal testing machine having at least
one compression ring (6), and a base (7), the device comprising; at least one
flaring tool (1) selected from a set of flaring tools corresponding to the...
This invention relates to a plant gasification of liquid or semi-solid fuel in fluidized bed gasifier comprising a fuel tank (02) containing a semi-solid fuel (01) which is converted in liquid stage by heating through a steam coil (03), the said semi-solid fuel (01) being fed to the fuel tank by a fuel pump (05); a ...
A process for alignment of stator core and correct assembly of connecting bus bar
comprising the steps of :
setting and alignment of fixture beam (2) by a rectangular alignment steel beam,
positioning top core bar (4) and bottom core bar by rotating the stator core on
rollers,
alignment top core bar (4) with bo...
A novel supported composite membrane for gas separation is disclosed. The gas separation membrane is formed on a porous ceramic support. The membrane layer is composed of a polymer matrix with mesoporous silica dispersed in the matrix. The alumina containing mesoporous material of the MCM41 family is uniformly dispe...
The invention relates to an openable stainless steel (SS) bubbler adaptable for
deposition of front conducting electrode in thin film solar cell, comprising a
bottom flange (1b) having a groove to hold a viton "O" ring (9) welded from the
bottom to a cylindrical flask (2), a plurality of teflon tubes (3a to 3d) f...
A universal re-rolling machine to convert large spools of insulation tapes into smaller
and handy rolls consists of a driven axle (3) for holding a large size tape spool for rerolling
and a driving axle (4) connected to an electric motor (8) through belt and pulley
(10) for re-winding. The loose end of the tape ...
This invention relates to a novel exhaust emission control device for diesel particulate comprising a main body (9) of cordierite ceramic honeycomb filter an inlet cone (5) and a outlet cone (6) located at either end of said main body, said inlet cone and said outlet cone being designed to provide an inlet pipe (1) ...
The invention relates to an orbital welding system with cam arrangement and
laser Vision Sensor based Seam tracking device for complex welding of nozzle
to drum. The system comprises a mounting assembly having a cross slide and
a weld head assembly, the weld head assembly having a flexible means in
the form of a...
The invention relates to an improved device to prevent failure of a soot
blower in a heat recovery system, the soot blower comprising at least one
electrical motor; a plurality of motor starters with electrically operated
limit switches; a traveling carriage fixed to a gearbox; a lance assembly
attached to the t...
The present invention relates to protective device of Resistance Thermometer to
enhance longer life adaptable to direct temperature measurement in highly corrosive
chrome plating electrolyte medium comprising one close end and one open end tube
having 10 mm outer diameter and 8 mm internal diameter and of 200 mm ...
This invention relates to a modular gas-oil bushing assembly for direct connection of a gas insulated electrical power equipment to an oil insulated electrical power equipment, said assembly comprising an insulated and voltage graded conductor (01), a gas side insulator (02); an oil side insulator (03), and an earth...
A method for the synthesis of nanostructured lithium zirconate powder
in a continuous mode using LPG-fired (LPG = liquid petroleum gas) spray
pyrolysis technique is disclosed. As per the disclosed invention,
amorphous lithium zirconate having nanostructure in the agglomerated
particles is obtained as a decompose...
This invention relates to an improvement on a combined pressure reducing and desuperheating valve, used in steam turbine bypass applications in power plants. The valve includes concentric blind (straight) holes drilled in the spray nozzle body and each of such hole terminating with angular holes leading to spray. Th...
The invention relates to dummy tubes provided in the double tube water coolers
for cooling transformers. In the double tube water cooler of the prior art, in
normal course the leaking water shall accumulate between the two tube sheet
and as it rises in this space it will have to travel to the alarm side of tube s...
This invention relates to a bed ash extraction combustor for fluidised bed combustion boilers and systems comprising a sealing device to provide a sealing at the discharge end of the ash collection pipe and characterized by, an ash transfer pipe to transfer the ash from said sealing device to a suitable cooling devi...
1. . A method of ash level monitoring for electrostatic precipitators' hopper, comprises
A. Using an ash level sensor converting the variable
RF admittance analog signal into variable
frequency.
B. Conversion of variable frequency into current
modulation on the single twisted pair s...
The invention relates to an alternate sorbent feeding system to effectively
capture pollutant sulphur dioxide in a circulating fluidized bed combustor (CFBC)
boiler, comprising a combustor (1) connected to a primary air fan (2) through air
preheater (3) and an air distributor plate (4); a secondary air fan (5) fo...
The invention relates to a high voltage generator bushing device for hydrogen
cooled generator comprising an epoxy body [10] and a high tension (HT)
conductor [11], an HT sleeve [01] and a grounded aluminium/steel terminal
[04]; at least one locking means (13); a plurality of grounded rings [08, 09]; the
grounde...
The invention relates to an improved high pressure purging system in a self-cleaning
rotary valve of circulating fluidized bed combustion (CFBC) boilers to eliminate frequent
clogging and overheating of the self-cleaning rotary valve, comprising at least one pair
of fixed end plates (2,5) releasably attached to a...
A LED lamp connectable to AC as well as DC source and capable of working on three
sources viz. Photovoltaic (PV), AC mains and a battery, the said AC mains driven
SNIPS output modulated to track the temperature dependent maximum power point
tracking (MPPT) voltage of PV panels, to enable extraction of maximum Pow...
A novel sine wave step-less dump load for frequency control of weak
grid (R-Y-B) formed by hybrid wind, diesel and solar photovoltaic
(SPV) generators comprising of:
- diode bridge (4.1) connected across R-Y lines;
- inductor-capacitor filter (L1, C1) connected across diode bridge
(4.1);
- resistor R1 connecte...
An automated Smart Wall Blowing System (SWBS) comprising an electrical/electronics system having hard wares such as water wall mounted heat flux sensor and signal conditioner, flow transmitter/ Current converter, logic panel and MMI panel interfaced with the conventional soot blowing hardware provided with a...
This invention relates to a modular design rotor for use in airpreheater comprising a rotor post and lug assembly , an upper header plate and a lower header plate positioned at two ends of a cylindrical shaped post shell .
A modified pressing clamp for overhang of 500 MW THDF type stator bars
comprising of two bolts (1), two nuts (2), two top clamp plates (3), two front
clamp plates (4), and a straight steel strip (5) characterized in that the steel
strip (5) is welded (9) to the heads of the two bolts (1) to form an integral
part...
A drilling jig with alignment plug (A) to avoid mismatch of holes between
current carrying bolt holes on the slip ring shaft and the field lead core bar
inserted inside shaft for transmission of current from exciter to rotor poles.
The part of the jig (A) called alignment plug (A) forming outer diameter of the ji...
An electronic governing system for triple pressure steam turbine
having TMR architecture comprising of a plurality of control islands
(EHTC TMR1, EHTC TMR2, EHTC TMR3), each such control island
comprising of
- Turbine Startup and Load Limiting Equipment (TSLLE),
(3.20),
- speed controller (3.03),
- admission ...
The invention relates to a method of drying complex shaped porcelain insulators,
having an uneven surface with sheds formed to maintain a creepage distance for
high voltage (HV) application requirement, wherein said insulators are dried by
coupling microwave radiation source to a green body of the insulator with ...
An improved pressurized fluidized bed gasification reactor adaptable, in particular
in a coal based combined cycle power plant, comprising;
- one free board zone (14) acting as a common zone provided with a gas outlet
(15);
- a fluidized bed reactor zone (13) having atleast one fluidizing gas plenum (16) for
en...
An improved coal crushing mill consisting of a feed pipe, a rotating bowl where coal falls at the centre of the bowl through feed pipe, the bowl is lined with hard liner called bull ring segment, grinding rolls where coal is grinded in between the grinding rolls and bull ring segment, wherein a spring system which c...
An epoxy seal off bushing (12) for 33KV air insulated switchgear comprising of hollow bushing
(14) safety shutters (13) middle flange (15) and mounting flanges (16), characterized in that the
seal off bushing provides sealing between busbar chamber (3), cable termination chamber (4) and
breaker chamber (5) of the...
The invention relates to a print cylinder (30') for a rotary offset printing press,
said cylinder comprising a multi-layer, self-adhering rubber blanket (1') which is glued to
the print cylinder (30'). According to the invention, the print cylinder (30') has a radially
inward extending groove (34') into which at ...
A fixture (F) for carrying out local hydraulic and pneumatic testing of weld seams of
additional flanges added on an already hydraulically and pneumatically tested stator frame
consisting of a ring (1) temporarily welded to the stator frame (7) around additional flange
(6). A flange (2) closing the ring has provi...
NO ABSTRACTThe invention is an ignitor system suitable for igniting different fuels such as
technology with compact power pack for generating electrical sparks of varying
energy level and rate. The system suitable for igniting different fuels requiring
different ignition levels. The system by its nature of design...
The present invention relates to solar-energy-based illuminating devices. More
particularly, the invention relates to solar-energy-based portable LED lamp device. A solar energy based portable LEDlamp device adaptable as a table lamp, the device comprising: a lamp stand (1); a lamp housing (6) releasably attached t...
A process of narrow gap submerged arc welding with cold-wire addition
comprises the steps of preparation of near parallel-sided edges for welding;
ensuring that the included angle for the joint is in the range of 2-4° and width of
the joint at the root is in the range of 18~25 mm; feeding one additional wire
wit...
A method for metallurgical evaluation of indentation crept samples is developed for
evaluating the metallurgical behaviour of crept surface of new boiler materials. The
Indentation Creep Testing is performed in the temperature range of 400-800 deg. C.
with the constant loading conditions being followed during all...
The invention relates to an improved device for directly connecting a plurality of
piezoelectric accelerometers to an external vibration monitoring system to
monitor core vibration in turbogenerator, the accelerometers being mountable on
the core-packets of the turbogenerator, the device comprising a metallic cir...
The invention relates to a venting device for 4-pass horizontal condensing type
low-pressure feed water heater, comprising a vent pipe (4) disposed at the
center of the tube bundle (9), the vent pipe (4) being configured with a plurality
of shaped orifice holes (10) to allow the critical flow of non-condensable g...
A portable device for dynamic testing of large Turbo generator decks in three
directions consists of a drive motor (1) for driving the discs (6), a drive controller
for controlling the drive motor (1), a vee-belt connecting the motor and the disc.
The main exciter body (4) houses the drive and driven gear discs h...
This invention relates to a device for measuring the weld root gap and
the gap and the gap between the two top edges in a weld consisting
of a camera (2), two light sources (3) placed at two different
locations, a shroud (4) covering the weld zone and a computer
operated through a image processing software when ...
This invention relates to a simplified measurement of the electromagnetic torque produced
by an induction motor from measurements carried out while motor is started with the
application of direct-online voltage to the motor terminals. The motor is supposed to be in
standstill condition when the voltage is applied...
A universal adaptive auto-tuning controller for induction motor drive control, said drive control system (9) comprises of a system (8) and a logic circuit (7) connected to a universal adaptive auto-tuning controller (1) characterized in that said AATC (1) comprises of a step input (2) connected to an ON/OFF controll...
The present invention relates to a process of determining residual stress in thinwalled
welded tubes adapted in manufacturing of heat-exchangers, comprising
the steps of: cutting a sample piece of welded metal tube from a full-size tube
length, the sample piece being substantially free from cutting-deformation;
...
A compact and light weight brushless alternator for 1400 HP diesel electric multiple
unit applications is disclosed. It has stator core (3) made of a plurality of one-piece
low loss steel laminations (2) assembled under pressure. The stator core and the
core is fixed rigidly on to the magnet frame (4) by means of...
This invention relates to a device for positioning the wear bar panel in pre bent
condition and the device thereof comprising: the features of a pre-calculated, designed and fabricated supporting means on which the wear bar panel can be positioned. The process comprising of placement of panel in tack welded
condit...
This invention relates to an improved three dimensional blade for axial steam turbine comprising leading edge (23) with an inlet flow angle (24) and a trailing edge (28) with an outflow angle (27), a pressure face (25) between the leading edge and the trailing edge, a suction face (22) between the leading edge and t...
The invention relates to a method for determination and application of a known
stress on a base material including a tensile specimen formed of the base
material in a process of stress corrosion analysis, the method comprising the
steps of preparing at least two specimens from a single base metal the second
spec...
The invention relates to a pressure-propelled contact system for gas circuit
breaker interrupter, comprising : an insulating chamber for storage of gas; a
metallic blast cylinder having a movable piston for pressurizing the gas
supplied from the insulating chamber; an insulating nozzle for blowing
compressed gas...
The invention relates to a method for identifying weld defects by classifying
reflected signals in an ultrasonic testing system, comprising the steps of
providing an ultrasonic testing (UT) equipment (5) having an ultrasonic probe (3), the probe (3) is enabled to generate, receive and convert sound signals into el...
An improved insulation for Roebel bar conductors in stator winding of Turbo generators comprising:
Roebel bar conductors having plaited and thermally cured at 155 to 165°C copper strips (10), such strips being doubly covered with glass insulation in two halves, thermoset epoxy glass fleece sheet (11) as half insula...
The invention relates to a system and method for assembling and dismantling a rotor and stator of large turbogenerators upto 800 MW at test bed independent of E.O.T. cranes. The system comprises of a trailer (51) having an erection base (50) mounted thereon moves trolleys (26,27) carrying a rotor (52) towards or awa...
A fixture for high voltage testing of (CC) Current Carrying bolt of
210 MW turbogenerator rotor. The D.C, current from the exciter
is fed to the 210 MW turbogenerator rotor through current
carrying bolt at the rotor. The insulation on the CC bolts are
required to withstand 8 KV r.m.s for one minute. The fixture ...
This invention relates to an automatic gas delivery system for dopant diffusion in semiconductors using a liquid diffusion source. It works on the basis of a PLC based controller module (1.1), a display cum keyboard
panel (1.6), a relay card (1.2) and a manifold of electro-pneumatic solenoid valves (1.3) actuating ...
The invention relates to the field of drying of large high voltage elector-porcelain
components in general and to a method for drying of high voltage porcelain
insulators with large section thickness using pulsed microwave source, in
particular.
Accordingly, there is provided an enhanced controller for performing remote
monitoring and control of electrostatic precipitators.
Thus, the present invention provides a system capable of remote monitoring
and control including in-built rapping control in a single embedded device. The
invention provides two type...
Accordingly there is provided a device capable of configurating any desired-shaped
profile on Fan Impeller Blades, comprising a vertical column mounted on a base,
and horizontally accommodating a rotatable main shaft a tool head (03)
mounted on the main shaft proximal to the vertical coloumn which guides the t...
This invention relates to an improved method of manufacturing solid fuel cells, said fuel cells operating at 1000°C is leak proof, said method comprising the steps of mixing alumino-silicate based glass composition in a predetermined ratio of (SiO2 - 50%, A12O3 - 9%, CaO - 16%, MgO -9% B2O3 - 16%) by weight in powde...
This invention relates to a simplified method of providing an out-of-step
protection to a synchronous motor against a voltage dip which may occur on the
power system feeding the voltage to the motor. Voltage dip in a power system is
a normal occurrence and happens whenever there is a disturbance like a fault or
...
A sand cushioned raft foundation (1) for retrofit electrostatic precipitators
comprising
- a sand cushion (2) provided over existing foundation footing (4),
- a plurality of pedestals (6) which support the columns of the retrofit electrostatic precipitator and
- a cantilever (5) from an outer pedestal (6), chara...
The invention relates to a method of manufacturing and interconnecting
conducting coils from superconducting tape to form high temperature
Superconducting transformers, the method comprising the steps of:
providing at least one hollow GFRP Spool having a plurality of continuous
grooves; providing a terminal conn...
A gas filled surge arrester with fast response time used in power systems in general and particularly with gas insulated substations and lines characterized in that plurality of nonlinear elements (1) are stacked in series and connected by metallic elements (2), said assembly is paced in an insulating tube (3).
...
An improved downward flow exhaust hood for impulse steam turbine for
operation under a wide range of frequencies and under adverse conditions has
been obtained. This has been possible due to elaborate Finite Element Analyses
carried out at different stages. Adequate stiffeners are provided at appropriate
locatio...
A system of rotor stoppage alarm (200) comprising
- a proximity switch (10);
- a plurality of vanes (20) mounted on the trunnion of the rotor;
- a DDCMIS (40) for generation of alarm and
cable (30) connecting the proximity switch to the DDCMIS,
characterized in that the output signal from the proximity switch i...
The invention relates to a system for heat extraction from an acidic solution in a
process of texturing mc-Si wafers, the system comprising a double - walled
process tank accommodating an acidic solution (HF: HNO3:H2SO4:H2O), the
process tank having an inner tank and an outer tank, the outer tank having a
height...
A iraew formulation for stabilisation of gamma-alumina and other transition alittimiinias is invented by using tin as stabilizer. A
process four producing a high temperature resistant high surface area aliuimiiraa support, twhiclh comprises admixing tin in the form of an aqueous rosr iraon—aqueous solution or dispe...
This invention relates to a novel steady for machining conical components in center lathe machines comprising a body (1) having a counter TTore adopted to facilitate filing of taper roller bearing (3), an adjusting ring (4) for keeping the taper bearing in place, a taper brass ring (5) push fitted in taper roller be...
A joint control device generator sets in a powder plant comprising digital governors (GOV1-GOV n) of individual machines connected in a token ring or multi-drop configuration, thereby permitting any individual machine to be the master communicating with the other machines in the ring for joint control.
...
A plate type force sensor for sensing in-plane forces comprising a thin plate (1) with a slit ( 12) cut all around the said plate with linear ball bearing (3) fitted in the slit (12) for support of the overhanging portion of the plate, wherein plurality of rings (2) are cut on the overhanging sides of the plate (11)...
A modular transport support device for transportation of large-capacity
turbogenerator with its stator-belly projecting below the stator-footings,
comprising at least four corner blocks, each fabricated by rigidly joining one each
vertically and transversely disposed wide flange beam (1,3), the length of the
ver...
The present invention provides a valve having a body split into two halves
which are offset from the trunion axis. The inventive valve not only reduces
the crane capacity but also simplifies the process of body joint from the
bolting and sealing considerations. Also the door with bolted trunions of the
valve red...
The invention relates to a flow regularization device for providing
improved fluid flow to the outlet tubes of boiler headers in a boiler
system, comprising : a baffle plate (1) disposed centrally into the
boiler header being perpendicular to the inlet flow direction, wherein
the baffle plate is configured with ...
The invention relates to a method for treatment of
Boiler Chemical Cleaning Wastes generated from chemical cleaning of Boilers.
Generally, hydrochloric acid of 5% strength, with additives to remove silica and copper, is used for cleaning the boiler.
After the chemical cleaning operation, the spent boiler ...
A process for the manufacture of Cordierite honeycomb »ubst?Aates by extrusion with a predetermined Rheological parameters as yield stress ( ), Die entry velocity sensitivity factor < α ) die entry exponent , shear stress ( TO > , die land velocity sensitivity factor < (2 ) and die land exponent < > comprising ...
The invention relates to a damperless superconducting
generator wherein by developing a high short-circuit ratio
eliminated the need of a damper and excitation system.
Present liquid helium cooled superconducting generator
requires a damper to protect field winding from quench.
Using a damper needs an excitatio...
The invention relates to a device for non-destructive testing of gas turbine coatings and explosive-cladded materials by a new thermal stressting technique to detect disbonding, using holographic interferometry.
The existing method of holographic non-destructive testing (HNDT) is inadequate as limited to smaller di...
A horizontal coils support for heat recovery surfaces of boilers comprising of double passage bent tubes vertically or horizontally for flow of steam/water inside and flue gas outside for heating characterized in that the horizontal tubes (1) are supported by vertical hanger tubes (2) provided by a vertical plate (5...
The invention relates to an integrated on line monitoring IRIS device with an inductor motor for fault detection of the said induction motor characterized by an IRIS unit, Field Interactive unit (2) and a power supply unit, the IRIS units (8) acquires signals from the sensors for the parameters voltage, current, vib...
The invention relates to A leak arrester device arresting leakage of fluid between the sealing ring and a rotating shafts of equipments like pumps, blowers, dampers etc comprising a shaft (1) mounted inside a gland collar (3) and packed with a sealing ring (2) of asbestos rope (5), a lock ring (7) compressing the sa...
The invention relates to an air heater fire monitor comprising a flanged alloy steel pipe (1) filled with insulation (2) material and a tube (3) is provided co-axially at the centre (4) of the said alloy steel pipe (1) and the thermocouple wires are provided through the centre (4) of the said tube (3) and the said t...
According to the present invention there is provided an integrated control device of artificial neural network with an electrostatic precipitor to control collection of fly ash of the flue gas by the said electrostatic precipitator comprising an artificial neural based controller adapted with opacity set point (2) a...
The invention relates to a portable solarimeter device for direct
measurement of incident solar radiation intensity, comprising a
shaped piece of crystalline silicon solar cell (1) disposed between two
thin glass sheets laminated with ethylene vinyl acetate; a shunt
resistance (2) connected between the cell term...
This invention relates to an electro - hydraulic pressure control valve for precise speed control of industrial turbines by delivering hydraulic oil to the valve comprising a permanent magnet torque motor (1), a pressure port (4), a control port (5) a drain port (6) and an electronic controller (8a) to process the i...
This invention relates to a water cooled heat sink module for thyristor devices comprising atleast 2 nos. of thyristors (1) sandwiched between devices atleast 3 nos of spacers of watercooled heatsink (2) with insulating spacers (3) on either side, the cooling water tubes (9) provided with coupling (10) for connectin...
The present invention relates to configuration of 2 out of 3 boiler protection for
all types of steam generators (boilers) normally fired by gas, oil, coal or other
fuels, and employed either in the production of energy or in chemical / physical
processes. This invention is for optimized configuration of micropro...
The invention relates to A snubberless inverter comprising a plurality of IGBTs (3) mounted on a heat sink (1), the ac terminals of the IGBTs being connected to busbars (4) projecting onwards through slots in a fibre-glass sheet (5), the positive terminals of the IGBTs being connected to positive busbar (8a), the ne...
The invention relates to a safety device against damages of torque arm, which in turn eliminate breakage of flexible coupling, disc spring etc. in a wind electric generator comprising rotor blades (1) with hub (2) and nose cones (3), connected to bearing housing (4) and shaft (5) having a disc brake (7) with brake c...
The invention relates to a micro - wind generator
for rural lighting comprising a rotor (1) made of bicycle wheel with tyre (3) hub with spoke (4) axle
with ball. bearing and mounted on wooden beam (18) , a
to bicycle dynamo (2) is operatively connected/the wheel
and rim with tyre (3) and a plurality of st...
The present invention relates to a process to prevent slagging for Indian
coal fired boiler by blowing air comprising a high pressure air jet emits
through a lance pipe is blown on the slag deposit zone inside the boiler
characterized in that boundary air reduces the temperature along the
boundary wall of the bo...
A salient pole type synchronous machine comprising a solid rotor with machined
poles; a plurality of conductors (1) with pole shoes (4) detachably attached to
pole body (2); a plurality of retainers (3) holding the pole windings (1),
characterized in that a cooling channel (5) is configured between the pole coils...
This invention relates to an improved water tube type heat recovery
Economiser for cooling Syngas in pressurized gasifiers / integrated
gasification and combined cycle plant comprising a plurality of water
tube bundles (01) interposed within a pressure vessel (03) a plurality of
support members (02, 16,17,18,19)...
The invention relates to an axial exhausthood for industrial turbine. The improvement lies in locating the rear bearing housing outside the steam path. The exhaust steam flanges are located on top and bottom of axial exhausthood. In this arrangement of the steam gland connections and lubricating oil connections are ...
"A control system for regulated compensators of surplus reactive capacity of transmission lines"
This invention relates to a control system for regulated compensators of surplus reactive capacity of transmission lines comprising a reactor transformer (1) having three windings as main winding as primary (2), the con...
The invention relates to a gas insulated hybrid transmission line with auxiliary shield comprising a central stranded HT conductor (1) with XLPE solid insulation (4) which operates at a designed potential, the said XLPE solid insulation is provided with an auxiliary shield (3) and a grounded metal enclosure (6) havi...
A device for transportation and fitting of I-seal rings in high pressure outer casing of
steam turbine consists of a lower plate sub assembly (1) comprising a lower plate (7)
having an elongated hole H1 for accommodating a bolt (3), a hole H2 for assembling a
Dee shackles (11) for lifting the device (D) by crane ...
The invention relates to a horizontal warm bore liquid helium cryostat used for operating super conducting magnets for magnetic separators, said cryostat being provided with a warm bore (11) to locate process modules, liquid helium (14) being placed in a helium container (3), a super conducting magnet (6) being disp...
The present invention relates to a manufacture of an improved air duct assembly for
comfort of crew of locomotive, the improvement is characterized in that the duct
assembly comprises a first vertical duct member (4), a second horizontal duct member
(5) parallel to the side wall of locomotive, a third horizontal ...
A PC based monitor for turbogenerators in which the system measures the RF emission levels at the 3 phases and the neutral of the generator, analyses the data and gives current status of the machine insulation like abnormal, danger or shutdown on the PC screen.
The RF emission from the 3-phases and neutral are meas...
The invention proposes a hybrid gas insulated transmission line (HGITL) for high voltage power transmission, which has the combined features of XLPE and CGITL.
The basic structure of HGITL comprises a central conductor covered with XLPE solid insulation housed in grounded metal enclosure filled with SF6 gas. A cond...
This invention relates to a novel ceramic substrate for catalytic converter comprising the said ceramic substrate having tubular cross section with corrugated inner surfaces characterized in that the said tubular substrate is made with adjustable geometric surface area per unit volume as herein defined to achieve th...
In the present development, a CFD analysis was carried out on the existing radial fan with original suction chamber. It has been detected that due to non proportionate size of the suction chamber, a void zone develops resulting recirculation losses. Accordingly, the suction box size has been reduced by 25% without c...
This invention relates to a compact domestic solar heater comprising a solar flat plate collector (1); and a hot-water storage tank (4) installed above the solar flat plate collector (1), and having at least one cold water inlet (8) disposed in a diagonally-opposed relationship with a hot water outlet (9), character...
The invention relates to a high temperature shaft seal for gas divertor in a combined cycle power plant characterized by a seal housing (1) having a cover plate (2) and a seal element (3) sealing a drive shaft (5) wherein the said element (3) is having a plurality of segments (4) movable readially inwards for adjust...
The invention relates to an improved grinding roll acaptable to a high performance bowl mill, the grinding roll rotatable on a bowl generally designed as an inverted cone, the bowl being rotatable by a motor, coal lumps inputted in the rotating bowl being crushed by the grinding roll which derives its rotational for...
An improved process for the preparation of dihydroxydiphenylmethanes by reacting phenol over a microporous alumino-silicate zeolite catalyst composite material in a ratio of 5:1 to 10:1 in the presence of a condensing agent and an organic solvent at a temperature in the range of 20 to 200°C for a period in between 0...
This invention relates to a combined nozzle-cum-throttle governing device for steam turbines to regulate steam at steady speed with change in load comprising a hydraulic speed controller (1) for nozzle mode and an electro-hydraulic controller (2) for nozzle-cum-throttle mode, the said hydraulic speed controller is c...
A method of hard surfacing of super alloys using laser for applications in high temperature wear resistance coatings particularly on gas turbine components comprising the steps of;
a) the super alloy samples are cleaned, shot blasted to
ensure better absorption of laserbeam;
b) the cleaned s...
The invention relates to an inline permanent magnetic filter for removal of weakly magnetic impurities from slurry comprising a non - magnetic stainless steel housing () with inlet (2) and outlet (10) pipes with flanges and 3-way valves (5), said housing () is provided with a top plate ( 3) to which plurality of bra...
The invention relates to a guide bearing lubrication system using radial baffles and pressure pipes for vertical rotors, comprising thrust collar with oil collector oil sleeve mounted centrally, and a runner with ring pivot and thrust bolt, characterized in that plurality of pressure pipes located in the annular spa...
The invention relates to a method of manufacture of cascade blades for aerodynamic research comprising the following process steps : steel block (1) cut to rough size, machining of the said steel block (1) for the threaded stub (2), rough machining of the profile (3) and the fixing pins (6) ...
A controlled shunt reactor of transformer type is provided which comprises it circuited magnetic coal (12, 13, 14, 15); a main winding (1); a compensating winding (2) connected as delta and a control windings (3, 4).
The control winding is divided into two series connected sections (3, 4). A main thyristor block (8...
This invention relates to a sealing device for gas flow diverter in power plants comprising a diverter body designated as diverter blade frame (1), a seal plate (9) tightly fixed to a connecting rib (15) which is being rigidly fixed to a extended plate (4) or the seal plate (14) being tightly fixed to the extended p...
The present invention relates to a fixture for making different layers of HTSC tape coil
winding for transformer comprises of one glass fibre reinforced polymer spool which
consist of two round shaped end wooden plate disposed a gap in between the two and
four nos. of studs are tied up which are tightened on both...
This invention relates to a polymer based pads for large thrust bearing of hydrogenerators in hydroelectric power plant, having improved friction and wear resistance comprising a steel backing (1) consisting of plurality of thrust pads (7) being adhesively bonded (6) to said steel backing, the said pads having an in...
The invention relates to an On-line H.V. coupler for monitoring of electrical discharges in large turbo-generators in order to maintain high operational stability.
The system is based on the following important features.
(i) A HV coupler has been provided to tap the PD/RF signals from the HV terminal of a generato...
A method of manufacturing steam valve spindle with
high temperature wear resistance coating comprising the following steps:
i) Chromium Carbide based powder along with nickel chrome as a binder is fed in the plasma flame for a short duration thereby melting and accelerating the powder to attain a velocity upto 350...
A DC / AC arc furnace for digital simulation study comprising a plurality of rectifiers (15) having a control (10). The rectifiers are connected to an incoming supply 33 kV BUS (12)/220 kV Bus (11) and a filter (13) is connected to said supply bus (12) and said rectifiers are connected to a load (14), the control bl...
An improved back-to-back test circuit for high voltage direct current thyristor valve comprising a six pulse back-to--back test circuit having a six thyristor valve (7) connected to a converter transformer receiving power from a generator, said valve is connected to a valve for short circuit testing through tw...
The invention relates to an on-line continuous vibration monitoring apparatus for fault diagnosis of a high speed multistage, centrifugal boiler feed pump (BFP) in a power plant comprising triaxial mounts (2,4) for velocity probes (1,3) secured to each bearing housing at the drive end bearing (21) and the non-drive ...
The invention relates to a Remote Performance Data Monitoring (RPDM) System adaptable in large power plants for remote monitoring of real time plant data, comprising a Distributed Control System (DCS) having a plurality of Human Machine Interface (HMI) devices, the of the HMI devices (1) being assigned for data acqu...
This invention relates to a process of improving abrasive and erosion resistance of high velocity oxy fuel (HVOF) spray coating and coated parts thereof subjected to high abrasive and erosive conditions such as slit erosion comprising the steps of surface preparation of machine parts on grit blasting using 12-16 mes...
This invention relates to a m&thod of manufacturing glass tape for use as a gaset for sealing in a solid oxide fuel cell comprising the following method steps:
i) preparing the tape casting paste (l) composed of components based on SiO2-Al2O3-CaO-MgO-B2O3 such as glass powder, solvents, dispersant, tinders, pl...
The invention relates to an axial exhaust hood interposed between the low-pressure cylinder of a turbine and a condenser to recover the leaving energy in the working medium of a turbine comprising:
an upper part (p) having plurality of circumferentially continuous outlets (1) for establishing an inter-communicating...
The invention relates to a method of manufacture of balanced
crowned involute -profile precision ground pinions comprising
the steps of:
i) soft turning the blank pinion in a lathe to provide
various diameters (1,2,3,4,14,15) and dimensions (5,6,7) of
the pinion;
ii) hobbing the pinion for the ...
The invention relates to an improved strap support device for supporting inclined
evaporator coils in circulating fluidized bed combustion (CFBC) boilers, the device
comprising a steam-cooled membrane wall disposed at the exit of CFBC boiler
cyclone a first super heater coil, and a second reheater coil disposed a...
A method for melting a fluoride based glass composition comprising:
heating the glass composition in a casket assembly till it melts; subjecting
the melted glass to the step of quenching; milling the quenched transparent
glass process.
Accordingly, an automatic solar wafer separation and feeding system has
been designed and developed and interfaced to the printing machine in the
manufacturing line of solar cells. The system incorporates a PLC
(programmable logic controller) based electronic control for the logics
needed for the various movemen...
The invention relates to an improved holding device for joining components
to form a Tee weld configuration using friction stir welding process. The
device comprising a base plate (3) attached to a vertical plate (4), the vertical
plate (4) being rigidly fixed to a table (5) of the friction stir welding machine;
...
An improved infra red current loop data communication for wind electric farms wherein a plurality of wind mill panels being connected to each other and a current loop communication cable being entered in a control room which being terminated away from the control panel, an electronic circuit operates within curren...
The invention relates to an improved cyclone separator adaptable to circulating
fluidized bed combustor for separation of solids at high temperature, the
separator comprising a cyclone shell (04) with polygonal cross section, the shell
being assembled by joining a plurality of flat members; a refractory structure...
The invention relates to an improved device for effective isolation of a banker
from a coal feeding system, the device comprising at last one gate valve and
one gate plate (01), wherein the gate plate is provided with spikes (3) at the
front of the gate plate, the spikes being formed with wedge shape from top
to...
1. An apparatus for providing reactive power support required by power systems, comprising:
- a controlled shunt reactor (1) coupled to thyristor (4);
and
- a controller for generating firing pulses based on the
input signals; characterized in that
a circuit breaker (CB1) in series with an inductive co...
This invention relates to a process for producing nanostructured hydrated
alumina either in the form of powder or in the form of suspension/sol which are
obtained by synthesizing hydrated alumina following a precipitation reaction
between aqueous solution of sodium aluminate (precursor) and sulphuric acid
(preci...
A fluidized bed combustion process comprising heating fuel uniformly and allowing the heated fuel to pass over the bed uniformly, said fuel being selected from blast furnace gas, solid fuels and steam; said fuel being used either alone or in combination at a predetermined flow rate.
The invention relates to a method of manufacturing a carbide insert
grinding roll for crushing high ash coal in coal based thermal power
plants comprising the steps of:
-providing a plurality of inserts made of a highly wear-resistant chrome
alloy m aterial;
-installing said inserts directly on the periphery of...
A method for the densification of Yttrium Aluminum Garnet (YAG) material which comprises the following steps:
0 fabrication of a porous compact of yttria and alumina mixture by pot milling
in alcohol and calclmlning the pressed component at a suitable
temperature ti) addition of Cobalt to the porous c...
This invention relates to a sonic tube leak detecting device (STLD) for boilers to detect steam leakage of boiler tubes comprising a sonic tube assembly, an acoustic sensor (1), a pr amplifier unit and a system panel, said sonic tube assembly comprises a matching unit (15), isolating unit (16) and a heat insulating ...
The invention relates to a method for improving fatigue and stress
corrosion properties of a surface layer of a leading edge (4) of a steam
turbine blade (8) comprising the steps of:
-flame hardening of the leading edge of said steam turbine blade
component in a temperature range of 900 to 1100°C.
-determinin...
A dual fixture (C) for fabrication and drilling of a connecting plate assembly (D
and E) of an air preheater consists of rolled fixture beams (2) joined together to
form a fixture (C) of an inverted U shaped structure. The dual fixture (C) is
adapted by laying the fixture beams (2) for center section and one side...
A Method Of Manufacturing Nano Clay Filled Epoxy Based Terminal Bushing For High Voltage Application
The method consists of functionalizing nanoclay fillers 12-25 parts by weight with
silane coupling agent, Bisphenol-A epoxy resin 100 parts by weight and hardener
carboxylic acid anhydride 100 parts by weight in a vacuum chamber at about 60°-65°
C and 4 to 5 torr pressure for 6-10 hours for preparing a homogenous...
Accordingly there is provided a multifunctionality ESP-Simulator for
testing the functionality of an electrostatic precipitator controller,
which is capable of performing multiple functional simulation, in
particular simulation of high voltage transformer-rectifier signal
conditions, rapping motor operating cond...
Accordingly, a specially constructed emitting wire is proposed. The new emitting
wire comprises a 2.5 mm AISI 316 wire as a core material, and a sleeve /
coating of suitable alloy material of about 0.1 mm thickness over the core
material which maintains the functional requirements of the emitting wire. The
new t...
Accordingly thee is provided an improved airpreheater sealing system which reduces
the leakage of high pressure air stream to low pressure gas stream.
In the present invention, the diaphragm plate is split into a top diaphragm plate and
a bottom diaphragm plate and a first component of the improved sealing system...
This invention relates to an improved drum shaft bush extension to enhance draw work"s drum shaft in oil rig comprising: a stainless steel bush (1) inserted into the hollow bore (4) of a drum shaft (2) on drilling the opening end of the shaft matching with outside diameter of the bush (1) and adapted with the shaft ...
The present invention provides a method for improving the reverse blocking I-V characteristic of stud-type power semi conductor diode through appropriate selection of a polyimide-amide polymer coating on the surface of mica insulator that is otherwise susceptible to arcing at higher levels of voltage. The invention ...
This invention relates to a method for prevention of ash accumulation in the flue
gas ducts in a steam generator during part load operations, comprising; providing a partition plate (1) across the entire length of the gas duct from the Regenerative Air Preheater (RAPH) to the Electrostatic Precipitator (ESP) in suc...
A power transformer having suitable insulation provided between core (2)
to yoke bolt (3) and clamping structure (1), clamping structure (1) and
tank (9) to achieve an insulation level so that it can withstand 10 KV r.m.s
for one minute. Special epoxy bush (4) with reinforcement of insulation on
the yoke bolt (3...
An electronic printed circuit board (PCB) based on field programmable gate
arrays (FPGA) and digital signal processor (DSP) for a digital controller,
comprising a pair of FPGAs (U7, U8); and a DSP (U5) wherein said FPGAs (U7,
U8) are provided with I/O expansion ports, application software logic
implementation an...
The invention relates to a device for conducting destructive test on seam-welded
thin sheets adaptable to standard universal testing machine, the machines
having a compression disc (1), and a base (6), the device comprising a forming
tool (4) mountable on the compression disc (1), the tool (4) being capable of
r...
Closing weights (6A) being suspended by cables (18) and springs (17) is provided
for emergency closing of spherical valves (1) of a turbine. The weight (6A) is
capable of moving in a weight pit. The angular movement of the valve door is
stopped in a very precise position by provision of a micrometer adjustment nu...
Accordingly, there is provided a water pre heater device for reducing the exit gas
temperature in a heat recovery steam generator (HRSG) system, the HRSG being
flowably connected to a gas turbine via a transition duct acting as a passage for
exhaust gas from the gas turbine, the HRSG comprising: a super heater fo...
The present invention relates to a fixture for facing lathe for clamping and holding
during setting the job comprises a central round stud (1) having external thread at both
end and first end of the stud is provided with a back plate (3) and a back nut (2) is
fastened on left side of the back plate (3) which is a...
A primary air fan used at high pressure for carrying the coal (8) coming from mill (6) to the furnace is driven by variable frequency drive in spite of non linearity in system resistance line by making a bypass arrangement with a pass duct (11) and a flow regulating valve (10) which makes the primary discharge being...
Accordingly there is provided a process to improve current interruption capability
of high-voltage, high-power gas interrupters which utilizes the arc energy during
peak arcing and achieves desired dielectric recovery by delivering cold gas with
higher dielectric properties at interruption. An intermediate volume...
The present invention relates to a method of measurement of low-liquid flow
passing, through an orifice device in a boiler tube having diameter having
diameter below 50 mm or above 1200 mm, the liquid flow maintaining a
Reynolds number below 3150, the method comprising the step of locating a
pressure sensor-zone...
A light weight DC series traction motor (3) comprising of high permeability steel magnet frame (1), armature (007) built from electrical quality low loss sheet steel laminations (009) insulated from each other and assembled on the shaft (008), commutator (013), poles and field coils (014), a plurality of brush gears...
A chemical composition of cast Aluminium bronze tube plate comprises:
87.0- to - 88.0 wt% of copper
0.11-to- 0.13 wt% of zinc
7.0- to - 8.0 wt% of Aluminium
0.18- to - 0.20 wt % of silicon
3.0- to - 3.5 wt% of Iron
0.015- to - 0.025 wt% of lead
0.70- to - 0.80 wt% of Nickel
0.60- to - 0.70 wt% of Manganese
...
A bowl mill for a coal pulverizer with an air mill for primary entry of air comprises a generally closed separator body (2) with a central axis and a bowl-like grinding table (3) mounted on a shaft (4) rotatable about the central axis. The grinding table (3) cooperates with a plurality of grinding rolls (6). The air...
This invention relates to a method of sealing brazed joints of a commutator riser and aramature coils of a DC motor.
A method of sealing brazed joints of a commutator riser (9) and aramature coils of a DC motor (1), characterized by the steps of brazing armature conductors (11) to the comutator riser (9); brushin...
The invention relates to a process to improve the technology in submerged arc
welding wherein for feeding the wire from wire spools, only single power source
with control system is required for performing the welding process. For adding
two more wires as the same as that of the main wire with same or different
c...
A high efficiency truncated vortex finder in a cyclone for fluidized bed boilers,
comprising a member (5) having a circular/rectangular/regular shape at the
cross section (1) with supporting structures disposed along the length (2), and
arranged with a provision of eccentricity, axial and rotational adjustment in...
An improved electro pneumatic contactor for traction control of an electric motor
of 5000HP and 25 KV in a locomotive , the improvement is characterized in that
the moving contact assembly (14), the current collecting flexible shunt (17), the
blowout coil assembly (16), and the Fixed contact assembly (15) are
re...
An improved method of producing nozzles fixable in fully compensated steam drum in HRSGs, comprising the steps of: providing forged nozzles with thickness corresponding to the compensated requirement of fully compensated drum prescribed by the statutory codes; characterized in that the welding between the nozzles an...
The invention relates an electrical control device for restricting EOT crane
operation comprising an electrical power source means for providing an
output voltage proportional to the input voltage with a switch means for
making and breaking the supply to the circuit, a plurality of operation limit
switch means a...
The invention relates to a process for a fail-safe detection of failure of
an exhaust device in a vacuum deposition system, the system
comprising at least one vacuum pump operably connected to a
scrubber which is connected to exhaust device, the exhaust device
having at least one each motor and blower, and a suc...
The invention relates to aft metal enclosed gas insulated co-axial systems, a
support insulator device to maintain isolation between high voltage and
grounded conductors the system, comprising: a high voltage (HV) conductor
disposed inside a low-voltage conductor (LV) or grounded enclosure (02), an
annular gap b...
A method for determining the soundness of bus-bar joints of oil immersed
power / rectifier transformers, comprising the steps of:
- identifying the oil immersed bolted joint locations in core-coil assembly of the
transformer and placing thermally sensitive coloured stickers on the joints;
- placing the core-coil...
A novel device for high dissolve oxygen venting in deaerator comprises:
a set of parallel three pipes assembled disposed at different levels,
being interconnected by a small pipe from central pipe to the outer
pipe;
one manifold is provided at the connecting junction point of central
pipe which in turn connecte...
A load-controllable solar photovoltic system to constantly maintain critical loads and
switch off the non-critical loads depending on power availability, comprising an array
of solar photovolic modules interconnected and disposed in a frame such that the
frame when positioned to face the sun allows the array to r...
A modified core clamping devices for large rating power transforms comprises
a plurality of rectangular shaped beam structures disposed parallely,
connected by a number of cross bars along the length and the end faces are fixed
up by tie rods; and each Top End Frame is provided with a plurality of stay bars
disp...
The present invention relates to a method of welding water wall panels using
flux cored wire that consists of a flux inside the core with a shielding gas of
carbon dioxide or argon + carbon dioxides gas mixture with multi torch
arrangement, which increased the welding penetration resulting in increasing
welding ...
The present invention is provided with a device for drilling holes on
the vertical surface of a cylinder at different angles and different height
comprises:- an assembly of one Main Index Base Plate and one Top Index
Plate disposed one above the other, and Top Index Plate is rotatable on one
Spigot fixed with Ma...
1. A non-destructive method for measurement of quantum efficiency (QE) of thin-
film tandem junction photo Voltaic (PV) module, comprising the steps of:
- covering the PV module under test with an opaque cover having an aperture and
positioning the module so that QTH / monochromatic light spot from
monochromator...
The invention relates to a core support insulator for a high voltage current
transformer, the current transformer comprising a live tank with a cover and a
plurality of having secondary magnetic core/winding disposed centrally on upper part
of the tank, the cores/windings accommodated in a metallic enclosure havi...
A rotor cooling system of a steam turbine with a rotor made of conventional materials
and receiving cooler steam from an external source, comprising a plurality of integral
platforms for the moving blades; a ring disposed between a first guide blade and an
inner casing; a plurality of passages between one blade s...
This invention relates to a device for machining the weld notch of pellini
drop weight test specimen comprising of a base plate with a plurality of
supporting pins and a hole supporting a side support block
accommodating pellini drop weight test specimen.
This invention relates to an improved tank cover of the power
transformer and rectifier transformers comprising of a turret
provided on to the tank cover at cut out wherein the turret
accommodates bushings.
The present invention relates to a semi automated leakage testing
system for capacitor boxes comprising of hydraulically actuated
capacitor box clamping 8B sealing arrangement, air filling
arrangement, dipping 8B indexing arrangement, chain conveyor
system, control panel 8B control pendants connected to each oth...
According to this invention, there is provided a process for the bulk
synthesis of nanostructures yttria stabilized zirconia powder by LPG-fired
spray pyrolysis system with the steps comprising;
preparing an aqueous -based precursor solution by dissolving zirconium
oxy nitrate hydrate, aqueous solution of yttriu...
The main object of the present invention is to provide a modified clamping system for
clamping all rectangular cross-section blanks for machining steam turbine blades in 3-
spindle, 5-axsis machines.
Another object of the present invention is to provide 3-spindle, 5-axis machine for turbine
blade machining with ...
The invention relates to a device for cooling an outer casing of a steam turbine
below a valve chest with cooler steam from balance piston gland, wherein a
chamber (3) is provided by welding at a location (6) two parts (5a, 5b) of thin
walls supporting the valve chest (4). So, that the outer casing (1) remains
b...
This invention relates to a device to inspect aerofoil profile width of
fan blade comprising of a base plate mounted with formed plate
leading edge side and formed plate trailing edge side fixed to a
plurality of straight plates.
A device for fatigue testing of Teflon hoses comprising a test sample (16) of
Teflon hose, first open end of which is clamped to an outlet line of water pump
and the 2nd end of which is clamped with a discharge water line (12), forms an
interconnecting close loop of water circulation from a tank through a pump vi...
An improved parting tool holder adapted on a CNC Cut off machine consists of a
square shank tool holder suiting the slide of the CNC Cut off machine. A groove
is made on the face of the tool holder which is milled to suit the blade of the
holder that carries the parting carbide insert. The blade is supported by t...
The main object of the present invention is to provide a pitch traversing mechanism
for an aerodynamic probe capable of carrying out probe angular measurement much
more accurately than what is possible with prior art systems.
This object is achieved in the present invention by carrying out the angular
movemen...
The "Remote Historian" system is invented for the storage, transmittal, retrieval
and analysis of the historical data in a power plant at a geographically far away
location from the main Power Station. Long term storage data is captured and
stored on the Remote Data Logger Storian in customized files. The Data lo...
This invention relates to a process of narrow gap submerged arc welding with an
improved narrow gap torch for boiler drum suspension rod butt joint, comprising
the steps of -preparing substantially parallel-sided edges for welding; maintaining
an included angle for the joint in the range of 2-4°, the width of the...
This invention relates to an improved economizer hopper for segregating
lumps comprising of a hopper bifurcated into atleast two parts for fly ash
and heavier particles with fluidizing pads provided on atleast three sides
of the hopper to fluidize the fly ash which is removed through a side
chute connected to th...
The invention relates to a bending roller in a panel bending machine for bending
tubes of higher diameter with large bend radius forming boiler water panels,
comprising an outer ring (1) formed of metal pipes and having diameter
corresponding to a required bend radius; an inner ring (2) formed of identical
mater...
A device for fixedly supporting large size turbogenerator stator having weight upto
316 tons and support width greater than trailer for road transport on trailer bed comprises of a plurality of box beams (2) consisting of a plurality of steel plates being fabricated with at least two longitudinal channels (1) welde...
A method for recycling of cooling tower blow-down water as make-up water for cooling
tower (D) to reduce plant water consumption consists of discharging the cooled water
to heat exchangers (HE) through main delivery line (F) while CT blow-down water is
drawn from the main line (F) to pass it through pre-treated p...
A process for detection of leakage in sub-cooling zone of a feed water heater comprising the steps of isolating the assembly of sub cooling zone (5) from the feed water heater unit (1) and placing the tube heater bundle in horizontal position with drain cooler entry on the top and blocking the drain outlet connectio...
An improved fixing arrangement of axial fan for hydrogenerator arresting the transferring of
the centrifugal force on to rim end plate comprises by disposing axial fan segment (6) on the
rim end plate (1) when the collar nut is tightened on the rim stud. The fitted bush (8) is
placed and welded on fan segment bot...
A tool clamping device (N) for horizontal boring machine consists of a tool clamping attachment (3) for clamping a sleeve (8), a chuck nut mounted on the said attachment for locking the sleeve (8) and a tool holding attachment (4) for
accommodating the sleeve (8). The sleeve (8) holds the cutting tool. The lengths ...
The invention relates to a method to determine stress developed in heat
exchanging structure of a steam generator, comprising the step providing an
optical sensor means being deployed in the generator; launching light from a
light source to be incident on a light reflector via an optical cable; allowing
interact...
An improved brush gear assembly for eddy current clutch adaptable to Diesel
locomotive comprising a brush holder (4), L-shaped brush holder support (2),
plurality of carbon brushes (5), plurality of lead connections (1), wherein the brush
holder (4) is made of free cutting brass bar and moulded with Epoxy resin. ...
Design and development of special sleeve for holding micro boring head on
face plate housing of horizontal boring machine substituting the machine spindle
which normally does such job but developed axial and longitudinal play due to long
use, leading to error beyond limits of tolerance. One sleeve (01) having the...
The invention relates to a process for welding of stainless steel to a bimetallic of
Aluminum to Titanium materials, the process comprising the steps of joining
together a first end pieces of a Stainless steel bar and a second Aluminum bar
constituting a first intermediate piece adapting the procedure of friction...
The invention relates to a device for joining titanium tubes by adapting
automatic Gas Tungsten Arc Welding (GTAW) comprising a base (02) having a
prime mover (05) to impart rotational movement to a pair of rotatable chucks
(03), the base (02) being adjoined to a vertical stand (08) which accommodates
a movable ...
mLE: A METHOD OF PROFILE MACHINING IN HIGH THICKNESS PIPE
MATERIALSTO FABRICATETEE-JOINTS
a method of profile machining of high thickness pipe material to fabricate Teejoints
in high pressure steam generators, the method comprising the steps of:
placing horizontally at least two nozzles on the bed of a horizonta...
The invention relates to a system for lifting and supporting of a long slender
structure in particular Feed Water Storage Tank of Deaeration system adopted in
thermal power plant, comprising one each right side cage and left side cage,
each made up of a plurality of ISMB beams which are inter-connected through a
...
The invention relates to a regulating device to balance mass flow rate difference
of cooling air between different stator quarters in turbo-generator, the generator
having at least a stator core covered with a stator frame, a plurality of stator and
rotor windings, a plurality of fans, and a plurality of air duct...
A improved fabrication process for manufacturing connecting plate assembly
comprises the steps of splitting (1) the full circular fixture into two half semicircular
fixture one for airside and second one for gas side and fabricating a
structure of air side half of APH connecting plate with new fixture with provis...
The present invention is provided with a carrier device to safely hold wafer
during cleaning in liquid medium comprises an 'L' shaped main frame having a
movable rectangular shaped retainer attachment mounted on the long arm of 'L'
shaped and a stationary rectangular shaped side member mounted on the long
arm of...
A improved Shell liner materials having high wear resistance and a method of
installation of liner material inside a ball mill comprises a cylindrical shape and a
oblique wave shape ceramic tile liner and each ceramic tile is sandwich with a
supporting plate and each ceramic liner plate provide two holes, first o...
The invention relates to a wireless communication system for communications
between ESP controllers and a centralized monitoring and control system, the
system comprising a plurality of ESP controllers having corresponding wireless
interface modules to enable the ESP controllers to the central monitoring and
con...
The invention relates to an improved power transformer with vacuum type on load tap changer (OLTC) operable at an oil-head exceeding ten meters, comprising a magnetic core, a high-voltage (HV) winding, a set of a low-voltage (LV) winding, a transformer tank, and a vacuum type on load tap changer (OLTC); and a conser...
The present invention is provided with an improved spacer ring with a temperature measuring element mountable on a thrust bearing adaptable to a centrifugal compressors comprising, a 'Y' shaped groove (1) undercut at the parting plane of a bottom part of spacer ring (2) and two parallel arms of 'Y' shaped groove (3,...
The present invention relates to an improved Heat pipe Radiator device for
cooling transformer oil, comprising, a radiator tank; a plurality of copper heat
pipes; a plurality of aluminium cooling fins, and a cooling fan; wherein, the
radiator tank is formed as a double walled cylindrical tank made of metal sheets...
The invention relates to a device for measuring conductivity of flue gas dust to
enhance performance of Electrostatic precipitators, comprising a chamber (1), a
Power supply controller (2), an air temperature control means (3), a moisture
control means (4), and an ammonia injection means (5), wherein the power
s...
A method of manufacturing brush seal for turbo machine, comprising the steps of,
winding a wire on a circular winding plate having a plurality of grooves configured at an
angle corresponding to the wire lay inclination; a plurality of separators(fins) with depth
and thickness so as to achieve circular seal segmen...
The invention relates to an improved process for flow circulation of Pre-start
purging air in cast iron enclosure TEFC (Totally Enclosed Fan Cooled) A.C
Induction Motor installed on hazardous zones, the improvement is characterized
by the steps of selecting a first strategic location of a first tapped hole (5) on...
The end-holding clamp (5) of CNC insulating taping machine is movable end
hence is moved from its position to avoid collision with tapping head during
taping on hydrogenerator stator bars (10). The clamp (16) is disposed to act as a
bridge between the stator bar end (3) and movable end holding clamp (5) of
CNC t...
The invention relaters to an air receiving and distribution apparatus for
regulating the steam flow and/ or for regulating the steam or water
temperature at different stages of a duct fired heat recovery steam generator
(HRSG) in a gas turbine (GT), the apparatus receiving air from a Forced draft
fan (15) and di...
The invention relates to a method for metallurgical evaluation of eroded coating
samples comprising the steps of preparing a plurality sized specimen to be
subjected to erosion testing after cleaning in acetone; loading the preweighed
coated specimen in an angle sample holder of a High temperature air jet erosion...
The invention relates to an improved steam generation system operating with
blast furnace gas (BFG), the hot BFG outputting from the blast furnace boiler
traversing a substantial distance through pipeline to be inputted to a boiler which
forcing the hot BFG to be initialled cooled at the exit of the blast furnace...
The invention relates to an induction-based automatic preheating device in straight
tube butt welding machines for preheating of the joint preceding welding of high
pressure boiler tubes, the device comprising a high frequency power supply, a "C"
shape induction coil in electrical connection with the high frequen...
The invention relates to an improved process of manufacturing profiles of
heating elements of heat exchangers, comprising the steps of : preparing a
soft core made up of high carbon steel casting; weld depositing a first layer
with hard facing electrode to impart required hardness; providing a second
layer on th...
The invention relates to an improved discharge elbow assembly to reduce
structural resonance phenomenon on single floor supported water pump
assembly, the improvement is characterized in that : at least two ISMB
beam with angular spacing of 65° are welded at the bottom stool flange
above a thrust block opening a...
The invention relates to method for cleaning mill scale and rust formed over the
surfaces of carbon steel and alloy steel components of new once through super
critical steam generators and passivating the cleaned surfaces, comprising the
steps of contacting the surfaces of the generators with aqueous, alkaline so...
This invention relates to a high power laser welding process to weld stellite
rings to inaccessible location of base material of a component to produce
internal clads acting as wear-resistant coating for the valve seat rings, the
process comprising the steps of placing at least one first stellite ring inside a
g...
The invention relates to an improved dead tank current transformer to reduce the magnitude of magnetizing current and limit the ratio and phase angle errors, comprising a copper or aluminum tube acting as a primary tube and
circumscribing a top chamber, an insulator, and a bottom tank; one each incoming and outgoin...
Many Gas Turbine plants operate ON "main fuel oil" as well as
"standby fuel oil" to ensure uninterrupted operation. In order to
ensure uninterrupted operation of Gas Turbine, due to any problem
in the operating fuel oil supply system, it should Be possible for the
Gas Turbine to change over to the standby fuel o...
The invention relates to an improved dual-excited round pole synchronous machine generating sinusoidal voltage waveform with wide-range regulation characteristic, comprising a rotor shaft having one each rotor core, the first rotor core accommodating a plurality of permanent magnets, the second rotor core
incorpora...
The invention relates to a holding and adjustment device for alignment of inner-
inner and inner-outer casings of low-pressure steam turbines, comprising : a
main body having a hollow hexagonal head at bottom face; at least two teeth
configured on the top face of the main body; a holding ring with threads and a
...
The invention relates to a controller apparatus for Magnetically impelled Arc Butt
Welding machine comprising: a plurality of sensors for measuring voltage and
current from a power source; a first signal conditioning circuit for transforming
the sensor signals for amplification and processing; a first PLC program...
The invention relates to a method for prevention of scale formation on
alloy pipes bends used in boilers during post heat treatment process of
the bends in heat treatment furnaces, comprising the steps of: providing
a tubular member according to pre-determined size, thickness, and outer
diameter for forming a tu...
The invention discloses an automated solar cell string transfer system for the manufacture of large wattage Photovoltaic modules. The system incorporates a PLC based electronic control for conveyorised movement of the PRBCF cell jig to
ensure its precise positioning under the vacuum cups including simultaneous tran...
An improved process with indigenously developed tool to reduce the process
time for rough machining of blade grooves in hp shaft of steam turbine on cnc
lathe comprising incorporation of new cutting parameters on CNC lathe to
perform rough machining of T-grooves on HP shaft. The improved tool is
clamped in both ...
A structural arrangement for 2 legged trestle of more than 25m for double conveyor gallery structure with two set of frames (P, R and Q, S) are placed at appropriate intervals at both X and Z direction in order to form a laced column which acts as a single unit. Two frames consist of four columns. Each column has fo...
The invention relates to an improved refractory mouth for oil burner formed of refractory material for CFBC boiler, refractory mouth (5,6); a seal box (7) constructed to act as an air chamber (11) as well as a supporting means for the refractory mouth (5,6), the improvement is characterized in that the refractory mo...
The invention relates to an improved mould pre-heating system for foundry applications, comprising a heating chamber having internal refractory lining; a plurality of grooved ceramic pads disposed along the internal walls of the chamber; a plurality of heating elements each releasably fitted on each of said
grooved...
A method of determining energy absorbed quantity during impact testing of welded tubular specimen, comprising the steps of providing a known drop weight testing machine having a measuring scale, a frame structure and a falling
weight; constructing and placing a holding means having a base plate and at least one eac...
1. A process for machining Aerofoil of 3 DS and F- Type steam turbine blades on
CNC machines using circular inserts comprising
- Preparing the blanks to the required size in suitable cutting machine as per
blade length and cross section.
- Loading the blanks on work piece station of 5- Axis CNC machine centre.
...
The invention relates to a device for constructing axial holes on the exciter/rotor
of large capacity turbo generators, comprising a shaft member having a diameter at first end matching with that of a micro boring head of a horizontal boring machine for insertion, a second end of the shaft member having two slots
...
The invention relates to an augmented water cooled flat plate distributor and
support device for air / gas / steam distribution in high pressure fluidized bed
gasification systems, the system comprising a cylindrical shaped pressurized
fluidized bed gasifier (12) to produce syngas from various grades of coal, a
...
The invention relates to a process of integrated operation of a Heat recovery
steam generator (HRSG) with smooth change over from gas turbine (GT) mode
to fresh air firing (FD) mode in combined cycle and Co-generation systems
comprising the steps of switching on the select for switch connected to the DCS
when th...
The invention relates to a low cost operational method of doubly fed induction
generators( DFIG) without use of power electronic devices to achieve high power
density, high torque and high efficiency, comprising the steps of providing a
DFIG machine having three phase windings in the stator and rotor, the stator
...
The invention relates to a method for etching single side of a diffused Si wafer
without using any mask, comprising providing a tank accommodating a plurality
of shifted PVC rollers, each roller disposed equidistantly maintaining a gap and
rotatable at a low linear speed by a drive mechanism; locating at least on...
The invention relates to a wet chemical method for rapidly removing both
organic and inorganic impurities from silver surfaces of silver-electroplated
electrodes used in busbars comprising the steps of immersing the electrodes into
an organic solvent and treating the immersed electrodes ultra-sonically for a
per...
The invention relates to a static switching circuit for capacitor banks for power factor improvement and voltage stabilisation and also for excitation control of induction generators.
There are many disadvantages associated with the use of contactors or circuit breakers to switch capacitors as presently employed.
...
The invention, relates to a device for re of wear in bends carrying particulate
In a coal based thermal power station the particulated air with the pulverised coal 1a carried from the pulverizers to the boiler through at hetwork of piping.
Indian coal are rich in abressive alfa quartz which causes extensive wear i...
A method of producing silt erosion and corrosion resistant coatings
comprising the steps of supplying compressed oxygen to combustion
chamber to produce a high spraying velocity and flame temperature,
feeding a predetermined quantity of a carbide/metallic powder into the
high temperature flame and deposition on ...
The invention relates to a system for monitoring of Ash level in ESP hopper which is based on embedded hardware and which consists of multiple probes with sensor electrodes that are mounted on the ESP hoppers, the multiple sensor processing units feeding RF signal to the four probes, and a display unit communicates ...
The invention relates to a fabrication process for high strength wear resistance grinding rolls with enhanced performance and higher operational life, comprising the steps of : selecting at least three different types of ceramic materials having higher hardness and greater wear resistance compared to SG iron; crushi...
The thin film semiconductors ranging from few nanometers to several micrometers find a variety of applications in sensors, field effect transistors, light emitting diodes and solar cells. These materials have properties different from bulk material which depend upon method of synthesis and other interrelating parame...
The invention relates to an RF Admittance based rotor position sensing device for leakage control system in Rotary Regenerative Air preheaters, comprising two conductive rectangular plates, one of which is stationary and mounted on the sector plate and a second passive which is fixed on the rotor periphery wherein a...
The invention relates to a method of operating a pressurized furnace type boiler with at least two forced draft fans wherein a variable steam turbine drive is provided to drive one forced draft fan, and an electrical variable speed drive is provided to drive the other forced draft fan, the fans caOn be operate in ei...
The invention relates to an improved drive device for rapping mechanism in Electrostatic Precipitators to allow effective rapping of collecting electrode, the improvement is characterized by : at least two pin-wheel
assembly (05) are formed, each of the pin-wheel assembly (05) connecting to a rapping motor (06) at ...
The invention relates to an automatically re-orientable solar thermal sun Tracker for
tracking the Sun from morning to evening to produce increased power output,
comprising: a supporting device consisting of one each top, middle and bottom portion,
the top portion formed of a panel fixing frame fixed on a rigid s...
This invention relates to a method of sealing brazed joints of a commutator riser and aramature coils of a DC motor.
A method of sealing brazed joints of a commutator riser (9) and aramature coils of a DC motor (1), characterised by the steps of brazing armature conductors (11) to the comutator riser (9); brushing ...
An improved process for building a rotor cage of an induction motor comprising the steps of:
- arranging a pre-determined groove in a short-circuit ring of the rotor
construction;
- inserting a plurality of rotor bars in a rotor core of said rotor construction;
- correspondingly machining both ends of said plura...
The present invention relates to a Position Measurement System of a Control Valve Servomotor (CVSM) comprising a holding means to fix the position transmitter (1) at one end and to fix the CVSM at the other extreme end wherein the said position transmitter receives the mechanical movement of the CVSM thereby measuri...
The invention relates a tip checking device for fir tree blades of steam turbine
on vertical machining center (VMC) machine and method of checking. The device
comprises of a base plate (1), a support block (2) for clamping a hydraulic pump with the
base plate (1), a control segment (3) resting on the base plate (...
The invention relates to an arrangement of valves and cams for controlling the valve number 2, 3, 4 of HP cylinder of a 200/210 MW Steam turbine for regulation of steam flow through the turbine. Cams (7, 8, 9) are designed and
manufactured with suitable contour to achieve the required valve lift for governing the s...
The invention relates to an intelligent system for automatized functional testing
of digital input module of distributed control systems, the distributed control
system (DCS) comprises a plurality of field sensors, transmitters actuators, a
plurality of input and output modules to the field elements for data acqu...
An end support clamp for eliminating deformation and vibration of free standing
LP turbine blades during tip end cutting on vertical milling machine is made of a
base (1) fixed to the machine base, a unit (2) having a slotted portion (12) at
the top for accommodating unit (3), a unit (3) having a window slot (13)...
The invention relates to a process for removing eccentricity in stubs or
radial arm co-ordinates to align floating Collectors concentrically to contain
within a radial gap configured in a compact cylinder, comprising the steps
of :- mounting a plurality of floating collectors having multiple alignment
nodes a te...
This invention relates to method for building rotor for suspended type hydrogenerator at site comprising of the top shaft (1) is positioned on top end of spider (2), bottom shaft (3) is secured to the bottom end of the said spider by means of coupling studs (4), the assembly of said spider, top and bottom shafts are...
The present invention relates to terminal bushings used in low and medium voltage electrical appliances like motors, generators etc. The invention particularly relates to flame proof, explosion proof terminal bushings capable to withstand high fault currents and generally used in high inflammable environments viz., ...
The invention relates to an universal adjustable holding and cutting device for
extra material removal of root and shroud of turbine blades before milling operation on
HMC machine. The device comprising a fixed dovetail rail (2) for guiding a sliding block
(3) over it. A fixed block is disposed on the base of the...
The invention relates to a zero-by-pass sealing system for basket type filters to
eliminate leakage of demineralised water into the filtered region of the basket
type filter envisaged for the flushing of heat exchangers, comprising: a basket
filter assembly made of flanged connections and an inlet provided at the...
The invention relates to a method for assessing voldability of boiler grade tubing based on environmental stress corrosion cracking, comprising the steps of :preparing an implant holding specimen using turning, milling, and hole drilling steps while minimizing heat generation and deformation in the sample in said ma...
The invention relates to an Improved process for manufacturing rotary housing of Oil Rig which uses a combination of castings for the higher section modules materials, and wherein plate members for the lower cross section materials are
used in the manufacturing process of the rotary housing. The integration between...
The invention relates to an improved Francis turbine runner reducing runaway
speed of the turbine without compromising efficiency and cavitation
characteristic, the improvement is characterized in that the maximum permissible
value of technical parameter "ξ" and specific speed of the turbine runner are
selected ...
The present invention relates to an improved welding process to reduce welding
induced distortion during fabrication of a hydro turbine component involving
circumferential grooved fillet welding, the turbine component constituting a
labyrinth consisting of at least one each flange and ring welded together by a
c...
The present invention relates to a dual fuel burner operating under twin fuel supply
regime with low pollutant emissions, high burning efficiency and high flame stability
comprising: an innermost pipe (1) for supply of a higher calorific value fuel, a first
annular pipe (2) for supply of a lower calorific value f...
The present invention relates to an improved gate and damper assembly with a curved
blade for isolation of associated devices during on-line maintenance of equipment of
power plant, the improvement is characterized in that the blades (06) of the gates are
constructed with a curved profile, a drive mechanism of th...
A loading and unloading device (7) comprises:
a rectangular structure consisting of round bar (9) for supporting 3 sections of sub-
assembly, section 1 on the left side, sub-assembly section 2 in the middle and sub
assembly section 3 on the extreme right, the device having plurality of side hook (8)
for lifting ...
The invention relates to a method of heating cleaning solvents to acidic range
for removing mill scale rust formed during manufacturing, storage and
fabrication and boiler operational stages of sub critical, super critical, drum type
once through boilers, comprising the steps of filling the boiler with only plain...
The invention relates to an improved counterweight hook latch device for
crane applications, comprising : at least two side plates (3) shaped
corresponding to that of the crane hook (2), the side plates (3) being
detachably attached substantially closely around a crane hook (1); a
connecting rod (4) joining a fi...
The invention relates to mechanized Hot Wire GTAW technique for dissimilar
weld joints of SS 304H and T91 tube. More particularly the invention relates to
an improved HW-GTAW process for dissimilar material tube butt joints of Super
304 H Austenitic Stainless Steel (SS 304H) and 9% Cr and ½ % Mo Ferritic-
Marten...
This invention relates to a method of producing 'micro-porous ceramic
membranes' of disk/pellet type for filtration/separation processes/systems
comprising the sequential steps of
a) mixing/grinding of alumina powders of different sizes and other additives
like, pore former, binder, dispersant, stabilizers in a ...
A fixture for machining baffle rings of 600/660MW turbo generator rotor comprising a
rectangular metallic plate (1) forming a base of the fixture; a plurality of dummy
segments (3) welded on the base (1) for resting of baffle ring segments (8) on the
curved surface during horizontal milling; a plurality of rectan...
This invention relates to an improved cylindrical blade for axial steam turbines comprising a leading edge (1), a trailing edge (2), a pressure face (3), suction face (4), an inlet flow angle (5), an outflow flow angle (6), at the leading edge (1) and trailing edge (2) respectively characterized in that the blades a...
This invention relates to an integrated device for temperature rise tests on induction motors by applying mixed frequency to assess the temperature rise of induction motors on load comprising a main supply of 50 Hz (1) connected to and supplying a main voltage V1 set slightly less than the rated voltage of the motor...
Boring Bar Adaptable To Horizontal Machining Centers With Fine Tool Adjustments In Steps Of 0.01 Mm.
Accordingly, there is provided a boring bar adaptable to horizontal machining
centers having a fine adjustment means comprising: a main bar having a shank
corresponding to machine spindle mounting device, a tool slot for a tool and
atleast two holes for clamping the tool via a square head bolt; a lever fixable on...
A bowl mill for a coal pulverizer with an air mill for primary entry of air comprises a generally closed separator body (2) with a central axis and a bowl-like grinding table (3) mounted on a shaft (4) rotatable about the central axis. The grinding table (3) cooperates with a plurality of grinding rolls (6). The air...
The present invention relates to rotary regenerative heat exchangers used as air preheater.More particularly,the invention relates to an adjustable combo device adaptable for fabricating components of a plurality sized connecting plate assembly used in rotary regenerative air preheater,atlesat eight corner frames ea...
The invention relates to an air-cooling arrangement of turbo-generator operated in a power plant for utility and also for industrial application.More particularly,the invention relates to installation of twin row of cooler arrangement for improving air-cooled generator efficiency by substitution of a single row of c...
Refer to the Fig. 1 showing the schematic of a typical bearing assembly inside the turbine exhaust hood. The generator rotor (5)is supported at its front side by drive end bearing shell (4) and at rear side by non-drive end bearing shell (9).These bearing shells are in turn are supported by separate pedestals. In so...
The invention determines combustion chamber gas temperature in a steam raising system.
Quasi-distributed optical sensing array means disposed within the combustion chamber are used for determining the gas temperature. The shift in characteristic reflected spectrum of interrogated light is indicative of the gas temp...
Form Impregnation Fixture is a rectangular C shaped box structure, open from the top and is made up of plurality Columns, which are rigidly fixed on a steel Base plate. To ensure straightness of the box, Columns are housed in 2 parallel grooves machined in Base plate. The Columns, on each side of the box are fastene...
Refer to Fig 1A shows the disposition of axial and radial holes drilled in rotor teeth for effecting end winding ventilation in newly designed rotors or as per the present day state of the art. The rotor is slotted to contain the filed winding. These slots are shown at pos. 1 of the figure. The slot contents are pro...
The invention relates to a device for mounting of Diode Wheels to an Exciter Rotor shaft after heating the diode wheel at a temperature of around 3000C with accurate interference fit, comprising; a base plate (1) on which an assembly of a first set of large diameter hollow pipes of (2) and a second set smaller diame...
A welding process namely as friction stir welding can be applied for the fabrication of
bus duct component with the help of a tooling fixture. The development of this fixture
is for the welding of USC palm to blanking plate component.
The fixture helps in the fabrication of USC palm-blanking plate component by ho...
An assembly for controlling distortion in a component while welding the component to a base component is provided. The assembly includes at least one fixture and at least a pair of setting stubs. The fixture defines at least one aperture for receiving the component which will be welded to the base component. Each of...
The invention relates to a serpentine coil-panel device for systematic plug flow
cooling of ash with air in an ash evacuation chamber of CFB boiler, the boiler
essentially comprising : at least one windbox, a combustor having a plurality of
chambers, a seal pot, and a plurality of cyclones, the device comprises a...
The invention relates to a permanent magnet machine with enhanced air gap
flux density and operable as permanent magnet motor or generator comprising
at least a rotor having a rotor core with a plurality of slots; a plurality of
permanent magnets each disposed in one of said slots; and multiple holes
constructed...
The invention relates to a method for Dual connection of Manual Metal Arc Welding (MMAW) machine during high pressure welding of boiler related components, each of the Manual Metal Arc Welding (MMAW) machine comprising switches (4, 6) for power on/off, displays (1, 5) respectively displays welding sequence and weldi...
The present invention is provided with a method to identify the location of an
object using a Self Responsive Locating Device (SRLD), the method comprising
the steps of identification of the area where the object with inbuilt tag ID is likely
to be located; setting search mode a device, enabled to read the data o...
The invention relates to an improved fuel cell stack system assembly operably connected to an internal gas preheating device to improve
performance of proton exchange membrane fuel cells and high temperature polymer electrolyte membrane fuel cells, the improvement is
characterized by comprising an anode side react...
A load test rig (8) for testing of components of 280t special wagon consists a plurality
of side sill assembly (1) constructed in welded box section (12) with rolled plates
(13,14), a bottom base assembly (2) constructed in welded box section (12) with rolled
plates (13,14), a top base assembly (3) constructed in...
The invention relates to an outside interwound helical type of tapping
winding in single group with high voltage center line lead for power
transformer; wherein a high voltage lead brought out from the center of
said tap winding and disposed away from the top yoke, wherein the tap
winding is formed as interwound...
The present invention relates to a method to control welding induced distortion/deflection in thin panel type of structures with discretely located attachment welds placed only on single side. The said method comprises of preparing the Panel (1) composed of tubes (5) welded with fins (6) in an alternate manner; plac...
The invention relates to an Intelligent Control Power Supply (ICPS) device in 3-
phase electro locomotives for control voltage supply of +5V,+/-15V and +/-24V
from single DC input of range 77V to 200V, wherein all the outputs of +5V,
+15V, -15V, +24V, and -24Vare independently regulated via a switch mode
regulat...
INTERRUPTER DEVICE WITH RELATIVE DUAL MOTION CONTACT
SYSTEM
An interrupter device to improve interrupting performance for high voltage circuit
breakers comprising a first movable contact assembly wherein comprises a socket
(1) encapsulated by a insulating shroud (3); the said socket being held on a
support or p...
The invention relates to a reliable inverted strap type support device for
supporting one horizontal tube with two fluid cooled hanger tubes comprising at
least two vertical fluid cooled hanger tubes (1) placed on both sides of a
horizontal tube element (2); two vertical strap plates (3) and two "C" shaped
space...
The invention relates to manufacturing of "U" shaped rod hangers for suspending drums & headers in power boiler, material is used to withstand very high temperature. This process involves many sub-processes like bending, threading & welding which require lot of manpower & also a very time consuming process. To elimi...
The invention relates to a steel columns which are made by forming a closed
box using side plates. A top plate (1) and a bottom plate (2) are held together by
means of a central pipe (6), which are enclosed with side plates (3), (4), (5) and
(8) on all four sides, multiple intermediate support plates (7) are prov...
A locating system in work piece adaptors to hold metal blanks of different cross
sections comprising:
a L-shaped locator body (3) with nuts (5) and bolt (4) mounted on a work piece
adaptor (1) with jaws (2)
characterized in that the bolt (4) is fixed in the locator body (3) in a position such that
the inner fac...
A Novel Backward Curved Plate Bladed Radial Fan for High Pressure
Application, having flow coefficient φ = 0.060 and Pressure Coefficient ψ =
1.155, comprising of a plain shroud Impeller [1] with a plurality of blades, of
two types one having plate bladed blunt body and other with a aerofoil
bladed profile body,...
A multiple output hybrid PM alternator, which utilizes both the radial and axial flux permanent magnet technologies comprising a rotor carrying both the radial and axial flux permanent magnets end plates carrying axial stator cores in order to achieve three AC outputs of different voltages and frequencies.
...
The present invention relates to a method of converting a dual in line plated through hole
(PTH) IC component to a surface mount device (SMD).
The invention relates to a clamping device for machining of guide ring of High Pressure Control Valve of Steam Turbine governing system, comprising : a frame having a top plate with a plurality of holes; at least four beams rigidly joined to each other; a hollow pipe attached substantially centrally to the frame; a ...
The invention relates to an improved electroscavenging system for grounding stray currents in industrial Compressors and Turbines, comprising : a grounding brush holder with a casing located to contact shaft surface of a rotary machine having a housing, and horizontally being held under gravity on the shaft and grou...
The invention relates to a method for preventing plasma damages to surfaces of silicon wafer during plasma deposition process in a plasma chamber, the plasma chamber (1) comprising a metal chamber accommodating at least one plasma zone (2); two vacuum resident zones (3); a plurality of vacuum creating pumps (10); an...
A grinding attachment (G) consists of a motor (1), two pulleys (2) vertically placed belt (3) imparts the motion of motor to the pulley. The bottom pulley transfers the motion to a pulley shaft (9). The pulley shaft attached to the grinding wheel transfers the motion to the said grinding wheel. The whole unit is att...
The invention relates to support steam tubes of fluidized bed heat exchanger
formed without a weld between the steam tubes and hangers comprising a
supporting member 1 and a plurality of steam coils 2, 3, 4, 5, 6 and 7, the
supporting member 1 being the main load-carrying member of the embodiment "
is made of mu...
A method of making bifurcated tube bends for power boilers, comprising
the steps of: providing a straight bifurcated tube (2); mounting a bottom
former (4) on a bending machine through a stay bolt (11) having a
bottom profile of the bifurcated bend to be produced from said straight
tube (2); placing a top former...
A cassette type tool holder for machining valve cones profile on a vertical
boring machine comprises of a tool holder (3) for holding a cassette which can hold a
tool for machining the profile, the arrangement being introduced to reduce the
working length of the tool and providing rigidity of the holding. The len...
The invention relates to development of seismic resistant lug assembly (SRLs) which
absorb seismic forces experienced by the suspended surface condenser welded to the LP
turbine exhaust. The seismic resistant lugs assembly, which are fixed to the bottom face of
bottom plate of condenser through reinforcing pad co...
The invention relates to an improved universal testing machine (UTM),capable of performing tension and compression test at high temperature to provide an accurate hot-hardness values of a test specimen, the universal testing machine (UTM) (1) comprising a split furnace (8) to raise temperature of a specimen (4) unde...
A portable pneumatic grinder comprising: a housing attachment (A) which includes a hose (4) at one end to receive pneumatic pressure, wherein the hose (4) is coupled to a main body (3) that comprises a holding grip impeller (1) connected to a impeller shaft (5) tapered at its end in a square shape wherein a portion ...
The present invention relates to a novel method to determine the chemical
composition electrode coating by generating an electronic signature of an arc
welding, comprising the steps of providing a known data acquisition system capable
to determine the electrical waveform characteristics; measuring a voltage betwe...
The present invention relates to an eddy current clutch to enhance cooling of
engine cooling water in diesel electric locomotives, comprising an inner rotor
disposed into an outer rotor, the inner rotor rotating inside the outer rotor
maintaining a small gap in-between; an engine providing mechanical power to a
...
A method of producing supercondueting coil particularly adaptable to high temperature supercondueting transformers, in the form of disk winding with
superconducting tape, comprising the steps of providing a top circular ring (2)
and a bottom circular ring (1) and joining the rings (1,2) with a plurality of
stiffe...
The invention relates to a fixing device for clamping the metal shield during machining
operation in the machine bed to avoid distortion due to heat generated while performing
various types of machining operations. The fixing device comprising a structure divided
into upper (5A) and lower (5B) structure, the uppe...
The invention relates to a high temperature insulation system for uniform heat
treatment of ceramic components in large volume, comprising a base structure,
an insulation wall, a uniform heating zone, an insulation door, a roof structure, a
plurality of threaded ceramic anchors, and a kiln furniture for a loading...
The invention relates to a method of manufacturing Crossover Tubes with Final Super Heater (rear) tubes in Supercritical Boilers and subcritical boiler, comprising the steps of providing a combination of tubes as raw material with 10m+10m+10m; producing two joints through straight tube butt welding to cover the tota...
The invention relates to a method for welding of wire/rod in "T" joint
configuration using Resistance welding process, comprising the steps of :
providing a resistance spot welding machine having at least one solenoid
valve; a piston shaft, and a metal frame; modiffing the top electrode of the
machine; providing...
The invention relates to a flexible metallic maintenance seal for single disc butterfly
valves.; comprising: a movable stainless steel seat (8) with seals housed in a
downstream flange (17) of the valve body, such that the seat (8) can be moved
forward by fluid pressure (water /oil) towards a maintenance seal (12...
The invention relates to an air insulation system to insulate the hot surfaces exposed to human beings of a ducting arrangement in a thermal power plant, the ducting arrangement comprises a rectangular cross sectional member (1) generating a hot-surface during operation, a casing support (6) provided on top of the h...
An automated welding method for high temperature and high pressure
application comprising at least two pipes (2) to be welded and prior preparation
of a double V compound angle groove at face to face junction of two pipes (2)
and clamping circular ring (3) over outer diameter of one side of the pipe to pipe
join...
The invention relates to a multi jack hydraulic testing device for hydraulic testing
of fan impeller blade bearing assembly, comprising a hydraulic pump with a
plurality of outlets; a plurality of impeller blades fixed on a test bed; a plurality of
isolating valves and a plurality of pressure gauges provided on t...
A Constant Temperature Bath, for damage removal etch process in plasma
texturing of mc-Si wafers, comprising a coil of ¼" diameter Teflon tube
inserted into a PVC tank having internal diameter of 27 cm containing acid
mixture consisting of 2%Hydrofluoric Acid(HF), 48%Nitric Acid(HNO3) and
50%water, extracting he...
An improved runner blade for Francis type hydroturbine employed in hydroelectric Power Plants, comprising and characterized in that, a runner blade with changed blade angles ‘?’ with an accelerating trend of increase of the said angle ‘?’ with respect to ‘?’, especially toward the band side of the blade wherein the ...
An electro-hydraulic governing system for operation of control valves (of both HPT and IPT) of steam turbines only through the common servomotors of hydro mechanical electro governing system ,
each of which is realized through torque transmitting means, which is responsible for opening and closing of Emergency Sto...
A vertical permanent magnet motor (VPMM) based on axial technology of a single sided structure, using reduced size of thrust bearing, comprising: a shaft (42) disposed within the magnetic frame encompassed by the said thrust bearing at one end and lower guide bearing (44) at other end characterized in that; a rotor ...
The present invention relates to fixture for clamping of LP rotor blades of steam turbine and a method for clamping for magnetic particle inspection. Fixture (A) is tightened on machine bed using connection between threaded holes (2) of device (2) and holes (3) in machine plate (5) by allen bolt(4).
Machine plate ...
The invention relates to a method for generating in-built power supply in the
local control box to operate power contactors and indication lamps without
adapting external power supply from distribution junction box in an ash-handling
system of a boiler equipped with electrostatic precipitator, the
method compris...
The invention relates to a split fixture-support device for easy erection, repair
and maintenance of barrier filter candle assembly at elevated position in
pressurizedfluidized bed gasification system, comprising a first major component
and a second major component, wherein the first and second major components
...
The invention relates to an arc-voltaic conversion system to power-up in-built electrical load in a welding machine, comprising : an arc welding machine for producing tube to tube joints having at least two chucks electrically rotatable to hold welding components, a welding torch to carry out the welding process, a ...
The present invention relates to an automation system to configure a fuel piping
network for transferring pulverized coal in thermal power plants.
The invention relates to a frameless, fully suspended, self-ventilated three
phase AC traction motor for EMU and metro application, comprising : a stator
core built from steel laminations insulated from each other, held together
under pressure between stator end chambers at both sides and welded with
four rectan...
The invention relates to a method of drilling holes in a hemispherical work piece
having high thickness, comprising placing the work piece in an inclined position
on an inclined circular plate (07) ; clamping the work piece with fasteners (08,
09) so that the displacement of the work piece in any of the three pla...
An intermediate device (12) consisting of a recess (13) for accurate
location on spigot (7) of a CNC horizontal boring machine"s milling spindle is
fixed to the machine ram (2) by six bolts on a pitch circle diameter holes (15). A
long boring head (4) having a recess is fixed rigidly to the locating pin (18) of
...
The invention relates to a device for supporting a blanking plate and multiple palms during friction stir welding of the components to form a sub-assembly for bus ducts in power plants, comprising : a base structure (1) to be detachably attached on the bed of a Friction stir Welding (FSW) machine, the base structure...
The invention relates to Permanent magnet machines with asymmetric rotor construction to increase peak air gap flux density in the machine, comprising a rotor assembly having an asymmetric configuration of the rotor core (406) with a first set of permanent magnets (401) disposed to form a V-shaped spaces and separat...
A modified hybrid excited synchronous generator that accommodates excitation windings and permanent magnets in the rotor core (61) for wide regulation of the output voltage and reduces risk of demagnetization of the permanent magnet (64) comprising:- - atleast a permanent magnet (64) disposed in rotor core (61) of t...
The invention relates to a device for producing a leak tight electrically isolative
joint between two connecting metal pipes carrying fluids at very high pressure
and temperature conditions present in operating boilers, the device comprising
identical flanges (10 and 13) having grooves on mating surface welded wi...
The Present invention, discloses a process for fabrication of flexible solid-state supercapacitor device on drawing paper by simple dip coating and spraying method. In the fabricated device, the anode, cathode, and separator are integrated on a single sheet of drawing paper. To ensure all solid-state configuration, ...
The present invention relates to a solar photovoltaic powered automatic electrical device for churning dairy products, comprising: a solar photovoltaic module, a cyclic timer switch means, two electromagnetic relays located on an adjustable base, an electric motor and a vessel with a churning rod having a stir head ...
This invention pertains to a method of fabricating clamp tooling from circular work pieces that are usually available as off-cut pieces of metal pipes of diameter higher than that of the pipe, for which the clamping tools are fabricated. This economical and innovative method can be used to fabricate clamping tools a...
The invention relates to an improved system for gas purging in pipes and tubes
comprising a gas exodus (1) for providing purging gas forward and trailing a
welding arc, a tube assembly (2, 3) welded to the exodus (1), the tube assembly
having an external tube (2) adjusting the gap between the exodus (1) and the
...
The present invention relates to an improved caliber system for a Stretch Reducing Mill for achieving round profile and dimensional characteristics during rolling of seamless steel tubes. The system comprising a recalculated caliber set up for reduction-rounding of the tube profile by two calibers (1,2) followed by ...
A process for enhancing the performance of fluidized bed coal gasification comprising:subjecting the fluidized bed air leading to the fluidized bed gasifier to the step of preheating to a temperature up to 500?C using solar energy, reducing the equivalence ratio by introducing air at 500?C, fluidizing medium and hig...
The present invention relates to a new device for quick assembly and disassembly of bottom end cover of vertical water heater comprises a rectangular shaped steel structure wherein two long steel channel members (2,3) are transversely weld joint by a plurality of small steel channel members (4,5,6,7,8,9) having two ...
The invention relates to a flexible support device to restrict in and out of plane vibration of horizontal coils system inside external fluidized bed heat exchanger, the coil system consisting of horizontal coils supported by vertical hanger tubes, the support device disposed on the coils by welding stubs on the hor...
The invention relates to portable device for drilling chordal holes in solid or hollow cylindrical object for fixing wires or thermocouples on the cylindrical objects, comprising at least one magnetic V block and one Jig having inner curvature matching the outer periphery of the cylindrical object including a plural...
The EHV Gas Circuit Breaker as disclosed in the present invention introduces
concepts of dynamic field electrode and relative motion contact system to
improve interruption capabilities of EHV gas circuit breakers.
A socket assembly (Fig. 2) comprising a socket (01), socket contact shield (03)
and current carryin...
The invention relates to a spindle mounted laser device (L) of a CNC machine to record two dimensional coordinates of surfaces without prior
geometrical information. Punching marks are made by slight hammering on the lower half of the turbine outer casing through upper half. A laser unit (10) is put inside an outer...
The invention relates to a dovetail block device to support pole connection of hydro generators, the dovetail block device comprising; wherein a bolt (9), a V-block (10) and a V-block slide (11) and a locking strip (12) releasably joined to from the V-block device wherein a rim punching with dovetail cutout (1) form...
A clamping device is made with two parallel faces (A,B) and a base "C"
inclined to those faces (A,B) and formed in between the said parallel faces to
accommodate the profile of guide blades. A threaded hole is made in the middle
of the face "A" to accommodate a threaded bolt and a nut disposed in the device
for ...
An improved method of balancing rotors (5) in particular flexible rotors, of A.C
induction motors in a dynamic balancing machine to achieve a desired residual
unbalance in the rotors, the improvement is characterized by the steps of
removing the balancing rings (2) from the rotor shafts (5) to restrict heating-up...
This invention provides a cost effective solution for introducing LED lamp based modular lighting system in installation having grid power with provision to switch over to Solar Photovoltaic (SPV) power and vice versa. The system can be installed without major modifications in the existing wiring at desired location...
The invention relates to an arrangement of fixture position and new
hydraulic circuit in case of fixture for root and shroud milling of bar type steam
turbine blades on horizontal milling machine. A new hydraulic circuit is
implemented for the fixture (F) to work in its new position. The fixture (F) is
oriented ...
A data recorder (10) which measures, records and stores instantaneous temperature directly in the furnace which comprises of a controller (25) to log the temperature data from a k-type thermocouple (20), a memory unit (40); a junction compensator (30) and a battery powered PCB (100) wherein the above components are ...
The invention relates to a coil termination method for high current power transformer for connecting to isolated as well as segregated bus ducts in power generating stations, the bus ducts comprising copper plates or cables carrying low voltage current from a generator to the low voltage (LV) coils of the generator ...
A BOILER FURNACE MAINTENANCE DEVICE COMPRISING A PLURALITY OF HORIZONTAL MEMBERS (04); A SLEEVE (05); AND A PLURALITY OF VERTICAL TUBE MEMBERS (02), THE HORIZONTAL TUBE MEMBERS (04) AND THE VERTICAL MEMBERS (02) BEING DISPOSED TO FORM A COLUMN AND ROW CONFIGURATION, EACH VERTICAL MEMBER (02) PROVIDED WITH ALTEAST ON...
The invention relates to an improved temperature measurement system for high voltage semiconductor systems, comprising : a high voltage temperature measurement device; a temperature sensor is connected to the input of the measurement device; a data decoder device connected to the measurement device by a fibre optic ...
This invention relates to a mechanical over pressure protecting device for steam service in high pressure, high temperature pressure vessel, vented to atmosphere. This over pressure protecting device needs to comply the Indian Boiler Regulations and ASME Sec-l, Rules for construction of Power Boiler. The device ope...
The invention relates to a Francis turbine runner blade modified to mitigate
pressure pulsations and noise associated with hydraulic instabilities inside the
runner, the turbine comprising a spiral casing, a plurality of stay vanes, a
plurality of guide vanes, multiple runner blades each having at least one l...
Present invention is related to a method for improving efficiency of pressurized
fluidized bed gasification based integrated gasification combined cycle plants
operating with high ash coals. Coal (46) is gasified by reacting with air (47) and steam
(48) at high pressure and high temperature, and generates coal ga...
The invention relates to a pulsed power supply topology system to enhance performance of Electrostatic Precipitators in thermal power plants, comprising: a regulating power block consisting of a main bi-directional switch and an auxiliary bi-directional switch which forms a connection between the input terminals and...
The invention relates to an automatically re-orientable solar thermal sun
Tracker for tracking the Sun from morning to evening to produce increased
power output, comprising: a supporting device consisting of one each top, and
bottom portion, the top portion formed of a panel fixing frame on a horizontal
axis rig...
The invention pertains to an improved method of placing HPOC inlet end over anchor bolt (2). The casing (1) is tied with small length slings (8) to a crane hook (3) of a overhead crane (4) and is lifted to place over four supports [S1, S2, S3 (2Nos.)] disposed around the anchor bolt (2). The small length slings (8) ...
The invention relates to a device for supporting a squeeze film damper on elliptical spring and adjusting spring preloading and centering of journal bearing, the squeeze Film Damper (SFD) comprising a shell having a bottom element (11) and a top element (8), the shell being assembled inside support elements (2,4), ...
The invention relates to an improved high pressure Oil Header with submerged
leakage oil discharge for blade turning mechanism of Kaplan turbines, the oil
header (10) mounted on the top shaft of the generator to supply high pressure
oil to a runner servomotor through a plurality of concentric metallic tubes (9)
...
The present invention relates to an improved cutting tool holder device having a
cutting tool holder angle of 900, characterized in that the device is enabled to
adapt a square insert having eight useful cutting edges, wherein the device
allows edge preparation of boiler piping ranging from 88.9mm to 219.1mm
out...
The invention relates to an external device for monitoring of ash load in the Electro-Static Precipitators (ESP) comprising at least a supporting structure with a free-floating bearing having a circular plate, and a hopper for ash collection, the circular plate sustaining forces due to unidirectional loading by ESP ...
The present invention relates to a method for improving toughness and cold cracking
resistance at heat affected zone (HAZ) on weld products by correlating the
microstructure and mechanical properties of the materials, comprising the steps of
simulating thermal cycles by heating and cooling the sample adapting a t...
1. A method for rapid heating of tube ends to produce improved weld-joint
between the tube ends, comprising the steps of: providing a swaging and
upsetting machine comprising clamping jaws, with cavities, a plurality of high
temperature-resistant pads provided to the clamping jaws, an upsetting mandrel
to apply ...
A 167 kW, 675 V, 275 A, 1035 rpm DC traction motor for high power Metro/EMU
application. The frame size of the motor has been made compact and compatible to
broad gauge application. The motor has been designed with class-200 insulation system
resulting higher power to weight ratio and high temperature limits. The...
The invention relates to an improved gas-liquid dual fuel burner system for industrial applications, comprising an innermost liquid fuel gun (1) with a liquid fuel supply pipe (2) and an atomizing medium supply line (3) including corresponding an air supply annular pipe (6) for complete combustion of fuel; a low cal...
This invention describes a method of developing and using a special
inspection device for checking the dimensional accuracy of compartmental
openings of windbox of once-through supercritical boilers. The windbox is a box
type of welded structure consisting of a base plate welded with a plurality of web
plates to...
The invention relates to an apparatus for separating a top lamination form the
other laminations in a stack of laminations to enable lifting only the single top
lamination to form annular layers of superimposed laminations for use in
generator or motor stator core, comprising a stacking table, two vertically
mov...
The invention relates to an improved load assessment method of Electrical
Overhead Travelling cranes to eliminate frequent calibration of load cells of the
Electrical overhead Travelling cranes, comprising the steps of :- providing a
known three-phase energy meter to calculate the net power consumed by the
crane...
A universal root locator to standardize the root and shroud milling of bar type steam turbine blades comprising: a block (1) milled in a symmetrical stepped form having a top surface (3) formed by vertical side faces (9, 10), the block (1) having plurality of holes (13) on each side for fixing with a fixture; a loca...
A method of growing carbon nanotube array (19) on large area substrate by low pressure chemical vapour deposition method. Further a method is provided for converting the said array (19) into a mechanically stable nanotube yarn in the shape of a conventional bare wire or cable.
The invention relates to a device for marking welding locations on four sides
equal-spacing on the circumference of a cylindrical pipe used in main steam line
of high pressure boilers, comprising a circular ring having an inner diameter on
which four holes drilled diametrically opposite to each other maintaining ...
A water cooled distributor with screw type bubble cap nozzles for air / steam
distribution in a high pressure fluidized bed gasification system, comprising: a
shaped fluidizing bed chamber (06) enclosed by a refractory brick lining (07) to
accommodate the high pressure and temperature fluidized bed; a non-fluidiz...
The invention relates to a friction welding process for welding of valve body
to yoke components comprising of steps of joining together a first end piece
of a carbon steel valve body and a yoke of hollow section to produce a butt
joint, the length of the yoke and valve body pieces being selected to be
longer th...
The invention relates to an independent Rotary Drive Power Control system with redundant drives for on shore Oil Rig for rotary operation, comprising at least two SCR/VFD drives controls (1); a field supply unit (2); a motor control center (3); a transformer (4), and a plurality of plug and sockets (6) for external ...
The present invention relates to an improved and newly invented insulated end-
shield of A.C Induction motor with Deep Groove Ball Bearings to achieve a
desired insulation to restrict leakage of current, the improvement is characterized
by an End-shield (3A) additionally machined, and an insulating Ring (4A)
con...
A device for checking chamfer at exit edge root of freestanding fir-tree blades of low
pressure steam turbine comprising a root holder (1) having threaded holes H1 and H2.
A stopper plate (3) is fixed on this root holder by threaded screws (4) at H1 and H3. A
tightening screw (2) is inserted in the threaded hole ...
The invention relates to a portable metal tube holding and bending device for
incremental bending of metal tubes comprising a base plate (1) holding a
powered cylinder (3) and a bending - cum - follower jaw (2, 5) in position for
performing the bending operation; a clamping jaw (7) including a clamping pad
(8) f...
An improved system of treating sea water to produce potable water comprising:
a pressure regulating valve (01); a bag filter (02); a feed pump (03); a micron
cartridge filter (04); a high pressure pump (05); a membrane pressure vessel (06);
a lime stone filter (09); a brine control valve (08); a uv disinfection s...
A System For Real Time Monitoring Of Successive Reference Welds Produced In An Arc Welding Procedure
The invention relates to a system for real time monitoring of successive reference welds produced in an arc-welding procedure comprising an arc voltage sensor, and an welding current sensor for acquisition of voltage values (V) and of current values (1); and an apparatus for said voltage values (V) and said current ...
The invention relates to introduction of novel design of split type screen tube to avoid ash accumulation in insulator housing by preventing contact between high voltage carrying components in emitting electrodes during rapping, comprising : machining of forming a bend at matting end of said splitted portion for sub...
A method of determination of teachability aspects of soil and fly ash with a
device, the device comprising of: a plurality of heavy duty polyvinyl chloride
columns or pipes (1); a plurality of mild steel support stand (8); a plurality of
clamps (2); a plurality of layers of stainless steel wire mesh (3); a collec...
The invention relates to a testing setup to determine the effect of residual
stresses in thin walled stainless steel tubes used in chloride media on the
stress corrosion cracking CHARACTERISTICS, comprising at least two stainless
steel plates disposed at a spaced-apart position to allow disposition of the tube
s...
The invention relates to a system to control the amount of solid flow into the
control system of a process plant based on multiple operating conditions for trip,
alarm and annunciations, comprising a single board, a master controller remote
module having a plurality of inbuilt isolated channels to read the input ...
The present invention relates to a side arrester device for supporting superheated
steam tubes in fluidized bed heat exchanger comprising a vertical member (3)
attached to the side wall (1) of the boiler; and a first side of at least four
horizontal members (2) each connected to the side wall (1), a second side o...
The invention relates a device for lubricating an annular space between a mandrel and a hollow billet during the manufacturing processes of seamless steel tubes, comprising :a tank (1) accommodating lubricant; a pipeline (7) for transferring the lubricant from the tank (1); a hot metal detector acquiring temperatur...
The invention relates to a process of producing high strength wear resistance
hard faced spheroidal graphite (SG) cast for grinding rolls and bull ring segments
for bowl mills in Pulveriser with enhanced performance and higher operational
life
comprising the steps of manufacturing spheroidal graphite (SG) grindi...
The invention relates to a method for determination of viscosity and reactivity of
a resin- hardener mix for improved impregnation of turbo-generator in a vacuum
pressure impregnation (VPI) process, the method comprising the steps of
measuring the viscosity (V) and reactivity (R) at a resin mix, and concluding
a...
The invention relates to a Brushless Alternator for High Power Diesel Electric
Multiple Unit (HHP DEMU), comprising : an alternator stator core (3) built up of
one-piece low loss steel laminations (2), which are assembled under pressure
applied by a plurality of core clamping plates at both ends to form the stato...
A universal make shift generator that replaces generator at site and needs to be
sent for serving having arrangement comprising:
and shield mounted bearings in place of pedestal mounted bearings in order to reduce
the generator rotor length;
an intermediate coupling installed in the space created by reduction in...
The invention relates to A system for inserting multiple insulating cylinders of varied length over core bar of 210 MW THW sets, the system comprising a base constituting a solid cylindrical shaped body formed of a plurality of metal plates flexibly joined; hydraulic cylinders to generate required pressure for the i...
The present invention is provided with an attachment to hold cutting parameters (generally for CNC Lathe machine), the attachment having a base of reduced length of Special Attachment (30) and increased thickness, wherein a dovetail groove has length of about 130 mm-135 mm; wherein provision to receive a clamping sc...
The invention relates to an improved method of welding non-ferrous flexible foils
to a metal plate by Friction Stir Welding (FSW), the method comprising the steps
of providing a holding device having a horizontal base member (4) attached at
two ends one each longitudinal member (5) formed in a shape of inverted "...
The invention relates to an apparatus for stacking laminations to form annular layers of superimposed laminations for use in generator stator core, comprising : a fast rotatable device for rotating at least one non-abrasive screw, the device consisting of a gear, a pulley and belt or any other mechanism to transmit ...
The invention relates to an improved device for supporting and holding in a
process of TIG-welding of leading and trailing edges of pressure and suction side
surfaces of Banana type hollow guide blades of Steam Turbine LP Modules, the
guide blade (1) comprises at least one each suction aerofoil surface (2) and
p...
The invention relates to a device for extension of power transmission and
grinding reach to remove defective metal in titanium tube to nipple welds, the
device comprising a spindle (2) having a length substantially equal to cover a
distance so as to accommodate at least one carbide burr (4) at the distal end,
th...
An embedded integrated operating system to communicate with plurality of ESP, wherein the apparatus receives data from a boiler, opacity monitor ESP Controller and other parameters, wherein said data received are transmitted through an Ethernet mode, wherein computers (2) are connected to monitor and control the fun...
The invention relates to an improved three-piece wax pattern die to produce in an investment casting process a gas turbine bucket, the bucket consisting of suction side and pressure side profiles, root and shroud portions, the bucket being bifurcated on its parting plane and shroud portions (4,12) is asymmetrical, t...
A modified gas turbine based combined cycle system having GBC and fuel gas heating system to utilize the residual heat of fuel gas heater drain, the improvement being characterized in that: the heat energy from fuel gas heater drain is diverted to deaerator; wherein the heat load on a condenser is reduced yielding a...
A testing apparatus for testing super alloy turbine rotor (1) by heating and cooling, the apparatus comprising of: a heating system (22) that comprises of an electric heater arrangement (14) in an enclosure (13), a vacuum system (8) to sustain pressure and allow heat transfer, an operational logic to control the hea...
A nano composite hydrophobic coating comprising: hydrophobic epoxy matrix and alumina nanoparticles having mean diameter of 40 nm.
A low-friction producing device for rotating a plurality of inlet guide vanes (IGV) equally spaced circumferentially and pivotable radially in the annular flow path of an axial flow turbo-machinery comprising: a plurality of inlet guide vanes 10 pivoted on both hub 11 ad shroud 12 of the casing, of the machine; a pl...
A robotic air plasma spray process for making abradable coating on Gas turbine shroud segment with a patterned design, the process comprising the steps of:- (i) fabricating a metal mask made of Inconel of adequate thickness to fit completely on the shroud segment taking into account the curvature of the shroud front...
The invention relates to a device for safe handling and road transportation of emergency stop and control valves (7) with our without yoke applicable to steam turbine, comprisinga base (9) made of I-section beams; a plurality of horizontal parallel beams (2); forming an upper deck of the base (9);a plurality of hori...
The invention relates to a device (D) for performing caulking (punching) adjacent balancing masses applicable for balancing turbines, comprising : a caulking tool (1) shrink fitted through a hole (13) configured on the front face of a supporting stand (2) to support and hold the caulking tool (1) in desired positio...
The invention relates to an improved contact system for dual motion high voltage gas circuit breakers, the improvement is characterized by comprising :a dynamic field controlled electrode [07] to increase current carrying contact separation at faster rate by suitably locating movable arcing contact; a second movable...
A system of monitoring brake wear for vertical hydro generators and motors comprises of a brake/jack unit consisting of a piston-cylinder assembly with brake pads attached to the piston. The system has a driving plate (2) connecting brake piston to a reference plate (1). When the piston moves upwards, the plate push...
The present invention relates to a support clamp fixture having hydraulic action for rigidly clamping the root and shroud portion of any type of turbine blade for working in a vertical milling machine.
Fig-1.2
The system comprising four probe tester (5). Nine of such four probe tester/head (1) are mounted on an aluminum plate. The gantry comprising nine probe heads (1) aluminum plate (2) are suspended from the center of a heavy block (3) of Aluminum. Nine heads move up and down with the help of a stepper motor and move ex...
The invention relates to the special job holding fixture and methodology used for the multi-patch 5-Axis scoop milling of the Stationary Bladed Rings of the Super Critical Steam Turbines from a single forged blank on the suitable 5-Axis machine tool with rotary indexing table with both sides tilting head configurati...
The present invention discloses a device and method for performing chamfering of taper terminal ends of water wall panels used in high pressure boiler which can not be done by conventional chamfering machine suitable for plane panels. The device comprise of a structure (11) fixed with a chamfering machine (10) on to...
In present invention, a method and means of descaling metal parts are described using a device that uses pneumatic sanding wheel 10 being attached to a pneumatic gun 8. The holding device 1, pneumatic gun 8 and pneumatic pipe 7 assembles as one unit. This unit is attached to a tool holder 11 at one end of the tool h...
The invention relates to return bend in the form of forged and bent into 180° semi-circular shape is produced as standard ANSI component. A hole of diameter equal to the Inner Diameter (24 mm) of 33.4 mm schedule pipe is to be drilled over the curved surface of the return bend. Further, 33.4 mm schedule pipe will be...
The invention relates to the manufacturing of boilers, riser pipes of outside diameters varying from 88.9mm to 168.3mm are used to the top headers to the water walls to the drum for evacuating the steam and water mixture. Normally, the pipe to pipe joints are made with welding bridge pieces on the circumference of t...
The invention relates to a simplified clamping platform for positioning and fit up of bent tubes to high pressure steam generator water wall panels used for carrying water and steam located in and around furnace of high pressure boilers for power generation. A base platform (02) placed horizontally and interlocked w...
In order to increase the power density of permanent magnet motor, fans are used to develop air cooled machines. The fans that are used in the air cooled machines are made of aluminium to exploit the advantage of light weight. The objective of the invention is to generate electricity while the permanent magnet motor ...
The invention relates to a universal device to support and maintain constant gap to avoid shrinkage during welding of evaporator panels with bend tubes in high pressure boilers, comprising; -a handle (01) with a locking pin (04) and a ratchet assembly (05) having outer arms (03) on both sides of the ratchet assembly...
The invention relates to a system and method for controlling over heating of Low Voltage (LV) side bushing mounting turrets, pads & tank cover due to stray loss of higher rating power transformers. The invention provides increased number of turrets to accommodate individual bushings and shaped changed from rectangul...
An automatic polishing device for surface finishing of complex-curved-profiled components of turbo machinery, comprising a stationary vertical column 15; a stationary base plate 16; a vertically moving horizontal arm 17; and a slurry tank 31 capable of vibrating; an electrically driven a.c., d.c. or servo motor 11, ...
The invention relates to a mounting device for mounting travelling microscope with broad accessibility to the location and orientation of specimen for crack length measurement, the device consisting of a pair of rails (1) welded with at least one pair of C-clamps (2a) at either ends, the male portion of the C-clamp ...
A high speed change over system (HSCOS) to detect AC supply deterioration in a rotating main motor generator (RMMG) comprising a feeder line R phase (2) coupled to a voltage sensor (5) which is coupled to a ARM processor module (8) and a voltage sensor (7) that is coupled to a ARM processor module (10),a feeder line...
A process for the preparation of herbal corrosion inhibitors for copper alloy comprising: cutting neem leaves and green tea leaves into small pieces; drying the small pieces of the said leaves, subjecting the dried leaves to the step of grinding, drying turmeric powder and roasted coffee powder, refluxing 50 gm of e...
Ventilators constitute one of the critical components of traction motor and it has to withstand high centrifugal acceleration and shock loads during the operation. Any failure of the fan shall lead to consequential damages to the motor resulting in long outages and huge expenditure. Drive end (DE) and Non-drive end ...
ABSTRACT
Title: Method of inspection of induction pressure weld joints in steam generator
tubes using vibro-thermography.
This invention relates to the method and set up to carry out vibro-thermography on
Induction Pressure Welded (IPW) joints of steam generator tubes. IPW is a solid
state butt welding process ...
A method to measure uniformity of diffused emitter of a silicon (Si) wafer, the method comprising the steps of: a motorised four point nine headed probe assembly to move downwards to make contact with the Si wafer; recording the data at the point of contact of the probe on the Si wafer; monitoring the recorded data ...
A Method Of Root Welding Of Riser Pipe To Elbow Without Bridge Piece In Boiler Manufacturing Process
The invention relates to a method of root welding of riser pipe to elbow without bridge piece in boiler manufacturing process comprising the steps of placing the riser pipe (9) to be joined to the elbow (10) on a surface plate; welding a bottom plate (1) with an elbow locating angle (2) on either side and at the cen...
This invention relates to a method for evaluation of high temperature corrosion resistance of Ni-5Al coated specimens, comprising the steps of preparing specimens of T23 metal/weld metal, followed by coated said specimens with Ni-5Al powder by wire arc spraying to obtain the Ni-5Al coated base metal/weld metal, obta...
The objective of the invention is to increase the output power of permanent magnet alternator having high number of poles. The air gap flux density in permanent magnet generator can always be improved by designing optimized rotor configuration such that the total reluctance in the magnetic flux path is minimum. A ne...
An apparatus for improving geometric unsharpness (µg) in radiography testing of butt welds in boilers, comprises: radioactive source (1) with cylindrical shape; a disc or plate (2) acts as an obstruction to radioactive source which further comprises a hole (3) of a small diameter, through which the radiation can pas...
A testing stand for testing totally enclosed fin cooled (TEFC) motor in horizontal condition, the said stand comprising a base , one end adapted to receive the drive end of the TEFC motor, wherein the said end comprises a support, wherein the top of the said support is semi circular, other end adapted to receive the...
The invention relates to amethod to carry tilting inspection of nozzle assembly called as wind box having 8 meters height with 2.5 width and 3 meters length usedinhigh pressure and high temperature steam generators used in thermal power plants. The wind box assembly comprising nozzles are to be tilted to control the...
Chromium Carbide based HVOF coatings and Stellite weld overlays over steel substrates are being used to protect control valve components in conventional and supercritical steam turbines. These components are prone to high temperature erosion, wear, self-welding damages as well as impact and shock loads due to high c...
The invention relates to a method of configuring and providing a support device for protection of Low Pressure (LP) module of Steam turbine from severe damage during blade fly off conditions the method comprising:- drilling at least two holes inside the civil foundation beam of the turbine; providing a sole plate as...
The present invention relates to reusable platform for the assembly of low pressure turbine assembly components. The platform is to be assembled make shift in the limited space available inside the outer casing of LP turbine for assembly of turbine components at inaccessible height and then to be dismantled after th...
The present invention relates to a special job holding fixture and a 5-axis scoop milling method for machining Pelton hydro turbine wheel (5) in a single set up from a single forged blank. An extra holding plate (8) is accommodated in a forged blank by means of locating pins (14) and a fixture plate (4). The fixture...
In the manufacturing of drain valves for high temperature and high pressure applications. Normally, the drain valve is used in turbine extraction lines where high pressure drop is involved and also used on any throttling service which results in severe erosion and rapid wearing out of conventional design valves in t...
Disclosed is a system for monitoring abnormal ash levels in Electrostatic Precipitators (ESP) Hoppers divided into plurality of passes with each of the plurality of passes having plurality of ESP Hopper fields. The proposed system comprises a plurality of sensors (9) configured to measure hopper ash level in the plu...
Present invention, discloses a method of fabrication of grinding rolls, where surface of wear resistant segment of grinding rolls is reinforced by hard granules (size 1.2 to 2.7 mm) having improved wear resistance (hardness > 1600 Hv) and toughness ( ~ 5.0 MPam1/2). In the present invention, coating of hard granules...
The present invention describes a process for manufacturing of 400kV 120kN long-rod composite insulators with variable insulation sheath thickness by following an injection moulding technique. The said 400kV 120kN ‘composite long-rod’ (CLR) insulators primarily comprise i) plurality of insulation sheds, which is mo...
A modified segregated GAS to air insulated termination of Bus PT module in GIS that comprises collet tube with multilam joint, a BUS bar in which the modified size 2 bushing is moulded to form a compact design.
This method involves loading of mechanical testing specimens on the holder (H) and placing it firmly under a sound transducer (5). The specimens are mounted on holder (H) by fixing with allen screws (S) so that free vibration is restricted. The holder is placed on a wooden block (7) to absorb excess vibration. The s...
In the present invention, brush seal is made using multiple base holders (9) of circular shape (25) and radial slots (31) are made at an angle (15, 33). The base holders are designed with two or multiple layer configurations of equal included angles (26) to provide overlap design feature (32). The base holder is kep...
The apparatus (A) comprises of a C channel body welded with vertical slotted plate (1) having two hexagonal bolts (2) fixed at both sides of C channel body (1). Two adjustment screws (4) are provided for tightening the apparatus on trial assembly base channel (9). External threaded rod of adjustment screw (4) will f...
The present invention relates to a TEG powered telemetry system on rotating components (1) to monitor the healthiness, condition assessment and fault diagnosis of the rotating components. The sensors (3) and telemetry transmitter circuit (5) in telemetry system used for monitoring the healthiness, will be initially ...
A component for bandaging magnets in rotor of electrical machines is a poly-glass banding tape, which impregnated with specially formulated fully catalyzed thermosetting polyester resin.
This invention relates to a process to enhance the wear life of exhaust fan blades, comprising the steps of cutting a MS plate as per blade profile (step 100), cleaning the surface (step 101) and applying a coating of bonding agent over the surface (step 102), followed by fixing flexible tiles over the surface (step...
An arrangement for three phase full wave high power converter bridge, having a current rating up to 2750 A DC and voltage of 1.1 KV comprising, thyristors for rectifier bridge (1),heat sink (2), semiconductor fuse (3), AC side off load isolator (7), DC side off load isolator (8), RC snubber (4), cubicle fan (5), duc...
The invention relates to the method and device for dressing of a grinding wheel while operating at approximately its normal speed of operation by means of stationary and rigidly held dressing tool whereby the unit stress in the minutely small local areas of support of the fine grinding wheel particles are exceeded a...
The invention relates to disclosed is a method for three phase, double layer, jointless mush winding assembly for stator of ac electrical machines, the method comprising: forming a first-phase winding by laying coils made of conductors starting from a designated slot of a plurality of slots of a first parallel path,...
The invention relates to an improved device for accurately machining core press ring corresponding to large size turbogenerator exciters, said device comprising a mounting base acting as the base of the device; a plurality of equispaced and internally recessed threaded hole arranged towards and outer edge of mountin...
Disclosed is an improved lubricator without moving parts for lubrication of the bearings of the rollers fixed on the push bench stand. The improved lubricant distributor has centrally drilled inlet hole (11) and six outlet ports (08) covered with welding a cover plate (6). The inlet hole and outlet holes are machine...
The array eddy current testing method includes placing a probe-encoder assembly on the surface of the retaining ring such that there is good contact between the coil elements and the surface. The probe is them moved along the surface for gathering eddy current signal. Signal from each of the coil elements are collec...
A method for reduction of pusher speed in piercing operation for increased life of entry pusher is disclosed, the method comprising steps of: preventing continuous rotational force of an entry pusher (1) characterized in that the entry pusher pushing a billet (2) into a Cross Piercing Elongation (CPE) main rolls (3)...
The present invention relates to a method of classifying the coal used in thermal power plants based on sintering/shrinkage characteristics of coal ash generated during combustion of boiler furnaces; this method can be used to check if a fuel might be problematic for pulverized fuel combustion. In this method the co...
METHOD OF EVALUATING THE PERFORMANCE OF THERMAL INTERFACE MATERIAL
The present disclosure relates to a method of evaluating the performance of Thermal Interface Material (TIM) using open circuit voltage of a Thermo-Electric 5 Generator (TEG) (15). The method includes measuring the open circuit voltage of the TEG (1...
A Burner flame arrangement for heat treatments of welding, comprises of: an oxygen regulating valve (13) fitted to an oxygen pipe (03) and an LPG regulating valve (14) fitted to a gas pipe (04) for regulating flow of oxygen and LPG into a mixer pipe (05) of said gas pipe (04) wherein, the mixing pipe (05) having a n...
A method for cleaning of reheater boiler tube comprises the steps of: -flushing reheater at a specific temperature where the hot water passed through reheater circuits such as desuperheater spray line (1) to cold reheater header (4) to reheater circuit tubes (5) to hot reheater header (6) to hot reheater pipe (7) to...
A bending machine for performing wrap around bend test and guided bend test for welded joints comprising, a revolving component (5), main axis shaft (2), guide (3), holding mechanism (1), cam mechanism (6), supporting rollers (7), guide mechanism (9), sliding mechanism (10); characterized by dual operation of conduc...
The invention relates to an object of the present invention to propose a replaceable steady pad for rotatably supporting cylindrical workpieces on machine tools during machining operation without blue matching, comprising a mounting base 10; an internally recessed plug bore 11 disposed towards center of the mounting...
This invention describes Proton exchange membrane fuel cell system for small electric vehicles comprising a fuel cell stack (3) provided with inlet ports (4 and 5) for supply of Hydrogen (H2) and air (O2) inside the fuel cell stack (3) for reaction, wherein the cell stack (3) is provided with an outlet port (6) and ...
The invention relates to a multipurpose apparatus for leak detection, descaling process and ergonomic positioning of inductor for brazing in the incremental pipe bending machine comprising a mounting plate (1) mounted with inductor 10 assembly (12) and connected to a locking plate (5), wherein a plurality of columns...
Chamfering operation is required to provide weld groove for welding guide rod in shell of Heat Exchanger. Tool holder for chamfering on the surface of the shell are readily available whereas chamfering on the inner surface is tedious. Conventionally it is done by gas-cutting and grinding operations which has disadva...
A sine table mountable work holder and drill jig fixture for performing compound drilling having a base plate (10) clamped to the sine table using key slots (19) and tapped holes (16) to first provide the first required angle to the workpiece and providing a second angle through the sine table on which the base plat...
STEEL PLANT AND AUTOMOBILE APPLICATIONS
The present subject matter relates to an apparatus for generation of thermoelectric power in steel plant and automobile applications. The apparatus has a plurality of thermoelectric generating (TEG) devices (8-10, 72-74) positioned proximate a boiler flue gas ducting system f...
The present invention relates to improved means for improved manufacturing insulation frames for large size exciters comprising a base unit (10) as the base of the means (20) for holding insulating frame or job (J); at least one slot protrusion (11) provided below base unit (10) for providing easy access into standa...
The invention relates to system of signal concentrator and distributor in serial communication protocol for routing signals from sensors and actuators from a first plurality to a second plurality of locations comprising a signal concentrator unit capable of sensing 24 different digital inputs and a distributer unit ...
An apparatus for determination of transient metal temperature distribution in periodic heat exchanger elements consists of a heating system (201) having heaters, controls, enclosure (102) for air suction, an air suction grid (101); a blower system (203) with motor (204) for air suction; a flow damper system (202) wi...
This invention relates to a device to determine the axial resolution of angle beam ultrasonic transducer comprising a singly structured block, one side of which forms an edge (A) and other side constitutes a surface (B) connected by means of a tapered part (C), wherein said surface is integrated with a plurality of ...
A modified PTFE tray for large silicon wafers, the tray comprising four numbers dome shaped cylindrical pins (2) to position the wafer at an elevation, a pair of side handles (1) to hold the tray; in which the tray height may be 15mm, and the pins (2) forms a gap between inner base of the tray and the silicon wafer,...
Disclosed is a method of short term stress relaxation testing of a low alloy steel, said method comprising the steps of: selecting a section specimen with a predetermined size and length for conducing the stress relaxation test; welding with the K-type thermocouple at the centre of the specimen for controlling and m...
This invention relates to forming of triple elbows by welding instead of forging for super critical boilers, heat exchangers, etc. The present invention relates to the development of procedure for achieving full penetration welds with square butt edge preparation by fusion welding processes (Shielded / Manual metal ...
In a circulating fluidized bed boiler secondary air is distributed all around the combustor and at different elevation for proper combustion and NOx control. A higher rating circulating fluidized bed boiler with Pant leg design is provided with secondary air injection at different elevation in Pant leg area also. St...
The present subject matter relates to a fixture (16) and a methodology (figure 11) used for separator nozzle profile machining. The fixture (16) secures a raw material pipe (02 ) to be machined in a Double Column Band Saw Machine, the fixture includes a bottom plate (04) act as a datum that supports the raw material...
The present invention relates to splitted guide bearing support and guide pads with an object of reducing the size and weight of bearing assembly and minimizing the cost. A plate is rolled and then welded to form a cylindrical ring of guide bearing support (2). Four number of mounting plates (6) are welded to the gu...
This invention relates to a system forcapturing velocity data across Electro Static Precipitator (ESP) fields.The system comprises of a vertical moving slider(4). Said vertical moving slider (4) travel in a pre-programmed vertical direction with the help of servo/stepper motors (6), gripper wheels (3) and an anti-sl...
The method of constructing the arrangement comprises of a fixing pin (3) being tag welded on a flat surface (1) and flat (10). The fixing pin hold the insulation material (2) and support the flat (10). The insulation material is laid on the flat surface (1). A cladding sheet is placed on the flat (10) by means of se...
This test unit 10 for hardness inspection of flame hardened zone in turbine blades, which was earlier done manually in a cost and time expensive manner, is provided with a blade holding clamping arrangements 30, 40 fixed on a workbench 20 to rotatably hold the turbine blade during the inspection process so as to pro...
The invention relates to an arrangement for root and shroud milling of turbogenerator moving blades. The arrangement consists of a profile resting block (16) which is clamped to a standard machining fixture. The said block (16) has a profile counterpart portion matching the profile of the blade (5) to be machined. A...
High Pressure and High Temperature Steam Generator consists of a component Connecting Sphere. The connecting sphere is made of two Hemi spherical Dished End (HSDE) joined by Circular Seam Welding and three nozzles, two on top placed at 45 degrees apart for connection to storage tank and one vertically downwards for ...
It is required to optimize the performance of heat exchangers present at the TEG system, which greatly influence the electrical power generation as well as the occupancy rate or size of thermoelectric generators and the working conditions to make it an economically viable option of heat recovery. This invention is c...
A template (T) for inspection of complete root profile (5) of steam turbine blades (B) with technological allowance (6) and a method thereof comprising a blade matching template (T) for performing quality inspection of blade root profile (5) in single setting by snugly passing the blade root (5) in matching template...
A method for fabrication of impeller with complex blade profiles comprises the steps of generation of 3D molded of impeller by CAD/CAM process (step 100); printing of negative impression of blade profile by 3D printing (step 101); creation of flexible mould by using 3D printed negative blade profile (step 102); ceme...
FORMING METHOD FOR TRIPLE ELBOWS FOR PANELS IN SUPER CRITICAL BOILERS
This invention relates to forming of triple elbows by welding instead of forging for super critical boilers heat exchangers, etc. This novel invention relates to the development of procedure for achieving full penetration welds with square butt ...
A method for preparation of carbon nanotubes (CNT) thread and/or mat from CNT aerogel comprises the steps of collection of intertwined smoke of highly aligned multiwall CNT; generation of CNT aerogel by using liquid or gaseous precursor including but not limited to methane, ethane, acetylene, methanol, ethanol, prop...
The invention is related to the method and process to carry out wraparound bend testing of high strength-low ductility materials. In the present process, a suitable fixture has been designed and fabricated for carrying out the wrap around bend testing of high strength low ductile materials in a UTM. The test can be ...
In the manufacturing of coil assembly having different circuit of tubes assembly (2) named as coils are assembled with roof seal binders (6), tangent connectors (3) and straight connectors (4). Since the pitch distance between the straight connectors (4) are different for different coil assemblies the same fixture c...
The invention relates to the method of manufacturing of fin plates to suit varying pitch at an angle range between 12° to 17° to inclined floor panels and vertical panels of extended pass. In the existing method, the fin plates which are made in press brake bending machine are taken to the assembly and by trial and ...
Disclosed is a method for testing the extended thread HSFG (High Strength Friction Grip) bolts by using configured test rig, the method comprising the steps of: clamping the test rig bolted with two bolts, in the universal testing machine (UTM) fixed at top and bottom of the testing machine; applying the tensile loa...
A method to condensate water treatment of fossil fuel fired steam generators in a steam generating system for power production, said method comprises the steps of collection of steam from turbine (1) floor and sending the same counter currently into the upright vessel (7) where the steam condensate is contacted with...
Sine table mountable work holder for compound machining of annular objects
This invention relates to sine table mountable work holder for compound machining of annular objects. The sine table mountable work holder for compound machining of annular objects is having a base plate (10) clamped to the sine table using ...
A device and method for offset machining of pads of tilt pad journal bearing
This invention relates to a device and method for offset machining of tilt Pads of journal bearing with high degree of accuracy and finish on conventional non-CNC machines comprising: calibrated slider (2) having a base plate (2’) to suppo...
A Device and a method for setting up of lug plates at the bending areas for first pass and second pass gang bend panels for high pressure boilers
This invention relates to a device for setting up of lug plates at bending areas of gang bend panels for high pressure boilers comprising a fixture having atleast three t...
Disclosed is a method of safe guarding a RAT (Rotary Arm Transfer) bucket system, while transferring layer of tubes from walking beam type cooling bed (CB) to Cold Saw (CS) RC line, in tube manufacturing process, the method comprising the steps of: acquiring real time feedback of RC (Roller Conveyor) bed line of tub...
A CHARGING AND DISCHARGING MACHINE HYDRAULIC POWERPACK FOR ROTARY HEARTH FURNACE
The present subject matter relates to a charging and discharging machine hydraulic powerpack for rotary hearth furnace. The charging and discharging machine hydraulic powerpack 300 comprises a charging machine oil tank 301, a dischargi...
The invention relates to a method for assembling Flue Gas Desulphurisation duct in highly corrosive environment is disclosed, the method comprising steps of: compiling a cladded plate (1) and a titanium sheet plate (6) characterised in that the cladded plate and the sheet plate connected by a channel box (4); stren...
An apparatus for fabrication of welded walls/panels for high temperature and pressure application
This invention relates to an apparatus for fabrication of welded walls/panels for high temperature and pressure application comprising base plate with handle and trolley wheels (1) supporting hollow sleeve (2) accomm...
The invention relates to a method for ladder plate pin setting on Economizer coils is disclosed, the method comprising steps of: configuring a side support mechanism for said ladder plate pin setting arrangement; configuring a height adjustment mechanism for setting a support pin (2) to said arrangement; configurin...
The invention relates to a method for machining a slender hollow cylindrical samples used in Thermomechanical Fatigue (TMF) tests is disclosed, the method comprising steps of: adopting an insert comprising of a needle stem (1) and a shoulder stem (2); establishing a tight fit in the hollow cylindrical sample by said...
The present invention proposes a method for manufacturing extended back pass floor panels (5). The individual tubes (32) for the developed length of whole panel is bent individually in rotary bending machine for a predetermined inclination angle, and then to be tacked to form sub panels (33) with the bend centerline...
The present invention relates to a new torch holder that enables the torch to weld the entire length of the tube with feed roller support. An extended portion (23) is disposed to hold a torch holder (22) ensuring the torch to weld the entire length of the tube with feed roller support. A slot (26) is configured in t...
Method of local post weld heat treatment of weld joints in boiler membrane water wall panels
This invention relates to method of local post weld heat treatment of weld joints in boiler membrane water wall panels. The method involves steps of placing two CP48 heating pads on either sides of tube to tube butt welds o...
This invention relates to an arrangement in coal based two pass thermal steam generator for expelling ash deposition. The coal fired steam generators / boilers with two passes of gas flow and an intermittent horizontal pass (2) have the potential of ash accumulation over the pressure parts enclosure floor (5) where ...
The process invention provides a novel arrangement for mounting and support of sliprings in brushless excitation concept wherein D.C rings are electrically connected to collector assembly of sliprings employed for earth fault detection externally to the shaft after exciter assembly. An improved modular type slipring...
The apparatus consists of a rotary harness (1) fixed with twisting fork (6) supporting multiple wire bobbins (2). It is driven by a motor (3) through belt drive (4). The wires (5) from bobbins are routed through levers of twisting fork (6) to the guide post-1 (7). As the rotating harness (1) rotates, the multiples w...
The invention relates to disclosed is method and system for achieving higher tar conversion in fluidized bed gasifier operating under bubbling fluidization regime with adiabatic conditions. The fluidized bed gasifier is a single stage gasifier with reactor zone and free board zone operating under similar temperature...
The invention relates to a clamping device for clamping the turbine blade during root and shroud grinding of non-magnetic blades comprising a base with a fixed jaw (1), adjustable jaw (2), a spindle (4) placed between the fixed jaw (1) and end plate (5), the said spindle (4) passes through the hole of centre guide (...
A novel innovative method for Damaged/deformed LR beam Replacement/ Modification without removing ESP internals. Constructive feature of this invention consists of Casing column (01), Bracket (02), Channel (03), Stool Platform (04), stub column (05), TR beam (06), temporary support beam (07), Damaged LR beam (08), v...
The invention relates to a first stage nozzle segments for high pressure steam turbines comprising of segments (S1-S4) comprising plurality of blade (1) joined together using key arrangement (6,7,9,10) to form a complete nozzle segment ring or first stage nozzle segment; plurality of nozzles (8) between blades (1) o...
A fixture for resistance spot welding of a plain stainless-steel sheet and corrugated strip comprising- bottom plate (11) on which a column (12) is mounted; - a circular disc (13) mounted above the said column (12); - said circular disc (13) comprising of plurality of guide rollers (14); wherein the plain stainless-...
The invention relates to a segmental, manually movable storage shed for the storage of alloy steel flat coils used for the making of ‘water walls’ in Boiler in a thermal power plant comprising steel frames (1) which span across the distance between at least two rails (7) which is covered with metallic sheets (4) ove...
The present invention discloses a sleeve bearing housing assembly with flexible hose adaptor. The adaptor consists of plate discs with bolt holes. A leak-proof gasket is provided at the interface. A tube of appropriate diameter and thickness is welded at the centre of one of the discs. A through-hole is made at the ...
The invention relates to an improved double-decker axial flow type fan for an air-cooler turbocharger, the improvement is characterized in that the fan blades are provided on either side of the turbo generator rotor to circulate air to allow circulation of air into the turbo-generator in different flow path, wherein...
Seals in turbo machinery are used between the shaft and the stationary part embracing the shaft, to prevent the working fluid bypassing the blade flow path. This invention relates generally to a method of formation of replaceable seal assembly for turbo machinery applications. The proposed method comprises of provid...
This invention relates to welding procedure for producing welds of grade 91 steel (ASTM A 387 Gr 91) and Alloy617 (ASME Code Case: 2439) plates of approx. 25 mm thickness using ER NiCrFe-7a filler material employing Gas Tungsten Arc Welding. The edges of alloy 617 (X) and alloy grade 91 steel (Y) are prepared to obt...
This invention relates to a joining of dissimilar material combination of commercial pure titanium and 304L stainless steel by means of diffusion bonding process. Joining is achieved by two stage bonding process. The first stage involves heating to the temperature of 1150°C at the fast heating rate of 200°C/s with t...
The present invention relates to pressure balanced steam control valve for steam turbine.
The modified control valve provides zero-leakage at fully closed condition to avoid controlling the over-speeding issues during transients and a larger pressure balance across it at 0% openings of main control valve with the ...
The invention relates to a steam blowing device for IP control valve to prevent entry of leaked steam from blowing device of IP stop valve to IP Control valve in a stream turbine comprising: a spindle (2), a first end of which abuts with the central portion of a plug (3) having circular cross section, a second end o...
The invention relates to a method of mounting Forced Ventilation (FV) unit at non driving end (NDE) side of TEFC motor for variable speed application at constant torque. The shaft mounting external fan (12) is first eliminated. A new TEFC motor (3) is designed and developed with a separately driven fan (5) for varia...
The invention relates to embodiments of the invention relate to a system for online monitoring and estimation of coal particle size distribution after they get pulverized by pulverizers and before they enter into furnace area to get burned to release heat energy. The invention describes a system of coal sampling and...
The present disclosure relates to expansion fixture for outer diameter turning of a thin walled cylinder (104). The expansion fixture includes a base plate (302) having sliding pins (306) threaded on its top surface; a plurality of sliding blocks (304) forming a circular block assembly, each of the plurality of slid...
The present invention proposes a single hopper electrostatic precipitator (101) having single hopper electric field or total of two hoppers (102) along the width of electrostatic precipitator (101) to make the width of the single hopper 5 electrostatic precipitator (101) greater than the conventional double hopper e...
The present invention relates to the field of solar photovoltaics and discloses mass flow controller (MFC) calibration setup.
For the calibration of mass flow controllers (MFC), a simple and inexpensive setup has been developed using the downward displacement of water. The setup is portable and can be taken close t...
The present invention disclosed an apparatus and a method for positioning the temple bell during the repairing process to rectify the cracks in the bell.
An apparatus for positioning the temple bell during the repairing process, the apparatus comprises at least first vertical plate (01) at one end of the frame and...
The present invention relates to a method of cooling circular saw/metal blades for automatic tube cutting and edge preparation (ATCEP) machine with pressurized venturi type air coolant mixing unit, which increases coverage of coolant area in the circular saw than droplet of oil mist cooling coverage thereby sufficie...
DEVICE FOR FACILITATING ROOT AND SHROUD MILLING OF STEAM TURBINE BLADES WITH LESS THAN 100 MM LENGTH
Described herein is a device for root and shroud milling of small size steam turbine blades with length less than 100 mm on a computer numerical control (CNC) horizontal machining center. The device includes a root ...
The invention relates to a device for the manufacturing of multi layered helical coiled tube bundles by winding tubes over the mandrels or shells as per the requirement. To accommodate different sizes of mandrels or shells, different sizes of 3 jaw / 4 jaw chucks are being used at headstock and tailstock sides. The ...
The present invention describes a fabrication method for manufacturing of ± 800kV 420kN HVDC ‘composite long-rod’ (CLR) insulators by following an injection moulding technique. The said ± 800kV 420kN HVDC ‘composite long-rod’ (CLR) insulators primarily comprise i) plurality of insulation sheds, which is moulded by u...
Described herein is a system and method for reducing heat-in-leak through slip-ring shaft assembly for high temperature superconducting synchronous machine comprises a rotating cryostat (101) having a superconducting pole coils (118) which are maintained at cryogenic temperature and excited through the low heat-in-l...
The present invention discloses an apparatus and a method for welding short length pipe in a submerged arc welding (SAW) machine, comprising a pipe supporting rollers (01) that are fixed to a top support channel (03) by roller mounting bolt and nut (02). The top support channel (03) is attached to a vertical column ...
A method and a cooling system which utilizes three different cooling media like sea water, demineralized water and air to cool two different heat sources like synchronous machine (HX-1004) and IGBT stack (HX-1001) which are interconnected with each other with certain boundary conditions.
“A System And Method For Welding Of Seat Ring To Valve Body Of A High Pressure By Pass Safety Valve”
A SYSTEM AND METHOD FOR WELDING OF SEAT RING TO VALVE BODY OF A HIGH PRESSURE BY-PASS SAFETY VALVE
The present subject matter relates to a system and method for welding of a seat ring (5) to valve body (8) of a High Pressure by-pass Safety valve. The present system (10) comprises a rotational platform (7) where the...
The present subject matter relates to a method for circumferential seam welding (Cir-seams) of two sub-assemblies (101a and 101b) of steam generator. The present method comprising of steps welding (301) of outer side of Cir-seams of the sub-assemblies defining V-groove between the two sub-assemblies. Further, grindi...
A method for chamfering and welding edge preparation of weldable end of water wall panel tubes (28) is disclosed. The method comprising the steps of: mounting rigidly a scarfing machine (26) on to an apparatus (29) in a position to receive the weldable end of the panel tubes; holding the panel tubes (28) horizontall...
The present invention relates to a method of TIG welding for aluminium plates of thickness 3-5mm in a single pass using a novel flux of silicon dioxide and acetone in paste form. The steps underlying the present invention are as follows- selection of Aluminium plate(s) (1) of thickness 3-5mm which are suitably clamp...
The present invention relates to Hybrid non-conventional energy extraction plant from sea- shore comprising Wave Energy system, Wind Energy system, Solar Energy system, Tidal current Energy system, Ocean Hydro Energy system and Desalination system.
The Power output Direct current from solar panel during the day tim...
Disclosed is an electro-hydraulic converter for LP bypass system against steam turbine sets operating on low pressure governing, said electro-hydraulic converter comprising: a proportional valve (3), a plurality of Position transmitters (8) for control of opening & closing of LP bypass stop valves, LP bypass control...
Disclosed is an automatic pressure surge control system for fuel oil firing and safety of the entire fuel oil system, said system comprising a FORB (Fuel Oil Return Bypass) valve, wherein the FORBV consists of a pneumatic actuator (4), a solenoid valve (3), a pair of limit switches (5) and an air set (1), characteri...
Described herein is a system for washing at least one of a user’s appendage and a method to operate such a system. The method comprises operating (302) an apparatus (100) for supplying water to the user wherein a force is exerted on a lever (112) of the apparatus (100) of the system by the user’s foot causing the ac...
A novel method for silver plating on copper compounds comprises the steps of surface preparation of copper plates (98% purity) for better bonding by two stage process, one is mechanical cleaning and then chemical cleaning; immersion of the plates in a heated alkali solution for a duration of 5 minutes to remove vari...
This invention elucidates design and development of a working model for electrical & mechanical wear testing of grounding wire brushes used for turbo machinery applications. Grounding wire brushes are widely employed in many industries for grounding the residual stray currents. The life of these brushes is usually g...
A Thermal Energy Storage (TES) device comprising of a mixture of phase change materials has been used to obtain maximum peak power generation for solar and space applications. A material composition for TEG power generation, which includes the phase change material mixture with different loadings for TEG power gener...
The present invention relates to a method for assessing the radiant coils of pyrolysis furnace comprises the steps of: selection of the outer surface of the tube at different altitude depending on the location of the tube damage or deformation observed, preparation of successive silicon carbide abrasive papers of di...
A NOVEL RIB INSULATOR ARRANGEMENT TO SUPPORT THREE PHASE BUS BAR OF THE GAS INSULATED SWITCHGEAR
The present subject matter relates to a Epoxy moulded Rib insulator non-concentrically in the grounded enclosure and is not supported at shortest distance of the bus bar from enclosure. The developed rib insulator is no...
A method of nozzle welding in hemisphere head (04) of a separator for OSTC boiler and composite unit (08), wherein, the hemi-sphere head (04) provided with stepped projection (06) as an integrated backing ring, the nozzle (05) having stepped turned portion (07) is made to seat upon the projected ring (06), properly ...
A method for uniform printing of silver pads on glass plates for measuring electrical conductivity comprises the steps of: i) applying a thin layer of silver (Ag) paste on a glass slide with a spatula; ii) pressing gently the stamp pad on the surface of glass with the silver (Ag) paste for ensuring pick up of the si...
Conventional alternators have less efficiency but they can be regulated whereas permanent magnet alternators cannot be regulated but they have higher efficiency. This disadvantage of permanent magnet alternators being not regulated can be overcome by a hybrid excited alternators which contains both excitation windin...
Described herein is an apparatus (200) for simultaneous distribution of inert gas from a single inert gas source (204). The apparatus (200) includes one inlet portion (204). One end of the inlet portion (204) comprises external threads (210) and a connector (212) for establishing a connection with the single inert g...
A novel method for converting high ash Indian coal into methanol comprises the steps of : i) feeding of coal through stream (3a) using carbon dioxide ii) gasifying high ash Indian coal iii) cleaning of said syngas using series of cyclones; iv) passing of syngas into heat exchanger (14); v) passing of syngas to scrub...
The invention relates to a typical (High temperature superconducting) HTS machine employs a cryocooler for reaching and maintaining desired cryogenic temperature around superconducting coils. The cryocooling operation is carried out in a closed loop process wherein cold gas is transferred from cryocooler to HTS appl...
The invention relates to liquid nitrogen cooling system of shaft ends of rotor of high temperature superconducting machine. The system consisting of a liquid nitrogen jacket (105, 205) externally welded on each drive side and non drive side of rotor. Two tanks (414, 415) of liquid nitrogen are disposed at each end o...
The invention relates to a typical (HTS) High temperature super conducting machine employs a cryocooler for attaining and maintaining desired cryogenic temperatures in superconducting coils. The cryocooling operation is carried out in a closed loop process wherein cold gas is transferred from crycooler to HTS machin...
The proposed process i.e. convolute roller technique for manufacturing of combustion liner bodies used in Gas Turbine, comprising the steps of: - Rolling a cut plate to a cylindrical shell by expanding and welding such that axial length and diameter of the cylindrical structure meets of the desired dimensions; Pre-...
The present invention discloses a method to fabricate carbon nanotubes (CNT) fiber reinforced with interconnected metal particles. The reinforced particles include metal with a CNT-wettability property. The disclosed method includes two steps: the first step is the growth of aligned interconnected multi-walled carbo...
The present invention relates to a process of forming a carbon nanotube- metal (copper/nickel/silver) nanowire fiber/wire composite with enhanced electrical conductivity comprising metal nanowire infiltration into carbon nanotube fiber/wire with CNT wetting liquid having copper/nickel/silver nanowire dispersion, las...
The invention relates to a hybrid honey comb device with improved absorption coefficient and negligible back pressure to reduce noise, the device comprising of a base honey comb structure having a plurality of cells; an acoustic absorption material lining parallel to the direction of fluid flow; formed of absorptive...
The invention provides a system for automatic TIG welding of centrifugal compressor component. The system comprising a six-axes articulate robot (1), a rotary table (2), work piece holder (3), a heating system (4) with a dedicated controller, TIG torch (5) attached to the flange of the robot and hot wire power sourc...
A demagnetizer apparatus for removing residual magnetism from steel tubes in welding machines comprises a bobbin (1) placed over the tube to be demagnetized; copper coils (2), which are concentrically wounded over said bobbin (1) and carries the electrical current; a controller (3) for supplying the varying input cu...
High velocity steam jets of wall blowers and the air fuel mixtures from burners erode the tubes in high temperature furnace of the supercritical steam generators leading to tube failures, boiler shut down and loss of generation and revenue. The materials of theses tubes differ as per the water/steam conditions of a ...
The present invention relates to a programmable device for traversing on ferromagnetic surface to measure technical data and digitally transmit the measured data to a remote host controller, the device comprising a chassis plate with thumb screws and nut, accommodating at least four drive motors, at least two L-shap...
A method of making gadolinium based thermal barrier coating for land based gas turbine components comprising: preparing gadolinium zirconate powder by solgel route, depositing the said gadolinium zirconate powder on gas turbine as a top coat by plasma spray and depositing Ni 22Cr 10Al 1.0Y alloy powder as a bond coa...
This invention describes a fabrication process in a continuous mode by utilizing specified support structure, SCR catalyst material, binder system, processing parameters, drying & firing conditions thereof in the fabrication process for manufacturing metallic wire-mesh supported SCR (selective catalytic reduction fo...
A Method To Increase The Flue Gas Residence Time Inside The Electrostatic Precipitator (Esp) Chamber
The process relates to an improvement of residence time of flue gas in ESP chamber and enhancing of collection efficiency. This is achieved by providing collection plates collection electrodes (1, 2) and arranging them differently to utilize the electrode collection area provided by means of uniform electric field s...
A vertically mounted high voltage gas circuit breaker (100) comprising, a vertically mounted single break interrupter in a novel housing with optimized ports, characterized by, integration of interrupter housing with mechanism housing, integration of interrupter with operating drive, integration of interrupter pole ...
A novel method for ceramic coating on boiler tube comprises the steps of: i) preparing a composition of ceramic coating polymethylhydrosoloxane (PMHS) is taken as precursor solution with silicon oxy carbide (SiOC) as passive filler and toluene as solvent; ii) thermolysis of cross linked polymethylhydrosoloxane (PMHS...
An artificial neural network-based method for reconciliation of data in a process plant, in particular thermal power plant carried out by a data validation and reconciliation module (900) by input data processing and ANN-Data Reconciler (400), said method comprising the steps of receiving data from each sensor from ...
This invention relates to wrap around test module for tensile/compressive test equipment to perform bending with controlled strain for determining ductility of welded samples comprising of rack (1) and pinion (2) for conversion of linear movement of ram of the tensile test equipment, wherein the pinion (2) is mounte...
The invention relates a semi- automatic gas cutting machine, consists of parallel twin conventional cutting torches (02 and 05). Cutting torch (05) the additional conventional cutting torch is mounted using the designed saddle assembly (07), saddle tube (04), saddle adjustment bolt (06) and hexagonal bolt and lockin...
The invention relates to High Temperature Superconducting (HTS) synochronous motor consist of HTS field windings in the rotor and the stator consists of air gap copper windings. The rotor consists of HTS make field coils instead of normal copper coils. Because of this technology, we can manufacture of compact, light...
The invention relates to a an oxygen-acetylene gas cutting torch with twin nozzles for metal cutting applications comprising a cutting nozzle (01 and 15) with connecting nut (02, 16); a cutting attachment head (03, 17) operably connecting said cutting nozzle with an oxygen pipe (05, 19), a mixing chamber and a mixed...
A method for improving the reliability of power transformer by continuous monitoring of the oil level in which a dial type resistor that comprises of a fixed contact and a moving contact wherein the fixed contact is START point and moving contact is the variable point of resistance in which the moving contact connec...
According to the invention, a welding procedure incorporating a weld sequencing technique for welding triangular shaped tubular panel used in supercritical boiler application is disclosed. The fit-up and assembling of the panel is carried out by laying tack welds at identified locations in weld lines connecting the ...
The invention relates to a Line beam Laser surface melting process applicable to nodular cast iron for increasing surface hardness of the base material including productivity enhancement, the process comprising the steps of supplying an input power of 1000 watts for Laser Surface Melting (LSM) process by line beam...
A device for hydro-testing of vertical separator comprising: a special taper thread (3 or 4) which is formed in or on the separator nozzles; a cylinder (5 and 5a) for facilitating the guiding of piston (6 and 6a); a central member called piston (6 and 6a), which is seated on the nozzles and cylinder (5 and 5a); a du...
Autogenous Internal TIG welding system fuses the root side of the stubs attached to headers. This fusion will help in assuring the integrity of weld joints and is executed by holding the stub and guiding the torch to the desired height and location. As the ovality of the internal diameter is with a tolerance, it is ...
The Induced draft fan (ID fan) is an axial reaction type fan made up of GGG 40 (Nodular grey cast iron) that undergoes severe erosion mainly at the edge where the flue gas hits the fan surface. The flue gas temperature is in the range of 150-180?C with maximum temperature goes up to 250?C. Indian coal exhibits high ...
Disclosed is a Non-invasive method for monitoring of PD and estimation of a partial discharge source in a GIS. The method for monitoring of PD includes the steps of: mounting a sensor on an opening among a plurality of openings configured external to the GIS for sensing a PD induced high frequency signal; and identi...
Disclosed is a Fully Automatic Sequential Start up Control system for the AC plant operation. The proposed system operates on a Single phase 230 V, 50 HZ power supply. The proposed system consists of a set of Timers, contactors, push buttons interfaced with the input power supply for equipments such as the chiller u...
Abstract
A BENDING METHODOLOGY TO COLD BEND TUBE MULTI-DIMENSIONALLY WITH MINIMUM BEND TO BEND DISTANCE FOR INTER CONNECTION TUBES IN BURNER PANLES OF STEAM GENERATORS
The subject matter disclosed herein relates to manufacturing multi-dimensionally bended tube with minimum bend to bend distance without joining two...
In the present invention, flue gas entering from APH enters into ESP inlet funnel through ESP inlet duct. The non-uniformity of the flow is controlled by means of introducing a two chambers at the outlet of the inlet duct system. The primary chamber is convergent in nature acts as a flow suppressor, which reduces th...
A subsystem for humidification of reactant gases, comprising a cylindrical candle consisting of multiple number of through holes over the candle length with high internal surface area, enclosed in a hollow metal/ polymer cylindrical pipe whose inner diameter and length is equal or higher than the candle diameter and...
The present invention provides a novel apparatus of quick replacement die for Press brake machine that reduces the die changing time in Press brake machine for pressing the duct, Tub plate & Damper blade used in Air preheater & Damper required for Thermal Power plant. The Quick Replacement Die (4) has been introduce...
A method of manufacturing of De-NOx catalyst in the form of extruded honeycomb for selective catalytic reduction of NOx from combustion flue gas where two step mixing process for preparing extrudable dough, continuous extrusion of honeycombs, two step drying process and reuse of calcined honeycombs are disclosed. Th...
A bushing head assembly (10), characterized by a standard size & shape for connecting low voltage copper cable terminal gear (15) of variable sizes for power transformer.
A NOX removal catalyst based on a combination of transition metal oxides, poor metal oxide and a semi metal oxide for NOx conversion in thermal power plants is disclosed. Further a method of preparing SCR catalyst by using combined method of dry mixing, wet mixing and paste mixing to produce homogenous SCR catalys...
The present invention discloses a new method to co-precipitate the metals in a ternary catalyst CuO/ZnO/Al2O3 using microwave irradiation. The ternary catalyst is employed in the methanol production from syngas in the industry. In particular, the new method is advantageous as it helps in reducing the complexity of t...
The invention relates to process for producing synthesis gas from fluidized bed gasification of high ash Indian coals with adjustable H2/CO ratio in the gas composition with enhanced overall thermal efficiency of the process comprising bubbling fluidized bed gasification of high ash Indian coals having ash content i...
A novel system and a method of depositing amorphous layers on silicon wafers by plasma enhanced chemical vapor deposition (PEVCD) process in a vacuum chamber (9) for fabrication of passivated interface heterojunction solar cells (PIHJ) comprising Perforated stainless steel sheet (1), Silicon wafer substrate (3), Waf...
Fans are provided on either end of a turbogenerator. The design of the fans are made hollow. A seal air connection is provided by utilizing hollow fan blades which circulates air in the radial direction in addition to circulating air in the axial direction. The air thrown out radially is collected through a groove (...
The refractory ceramic composition suitable for use in casting refractory shapes and making a ceramic refractory product is disclosed. The composition comprises of aggregates which has particle size distribution suitable for production of ceramic refractory. The present invention is directed to a preparation magnesi...
The present invention relates to A method of protecting crucibles (10), cover plate / lid (8), probes (6) /pushrod and sample holder / assembly from contamination / damage due to melting of a solid fuel ash during thermo mechanical analysis (TMA),comprising the steps of selecting and applying a finely ground metal o...
The invention relates to a smart catalyst system for real-time temperature sensing of SCR catalyst and feed-back to reduce NOx pollutants in the flue gas of fossil fuel fired furnace, sensors distributingly disposed throughout the catalyst volumes so as to provide real-time feedback on self-performance of all the p...
An assembly for wear resistant bed material system of CFBC boilers comprising: - a mixing nozzles chamber (1), mixing nozzles cum transfer pipe (2), an air inlet pipes (3) for supplying air to the mixing nozzle transition pipe, which is routed to the combustor chamber through the straight pipe (4); - a refractory li...
The invention relates to a process of elimination of normalising and tempering process of Heat treatment by establishing a higher ratio of radius (R) of bend to mean Diameter (D) of bent tubes for coils in a high pressure boiler. The said process comprises of establishing an increased bend radius of 175 mm from exi...
Stator winding bar with brazed water box is kept on height adjustable stands (S1, S2, S3, S4 and S5) and connected with water inlet header (6A) and water outlet header (6B) by flexible hoses (11). Water box is connected to a Electromagnetic vibration Exciter. The water box is initially subjected to Helium leak test....
A method for etching/polishing a single side of silicon wafer with an alkali comprising: subjecting both sides of Si wafer to the step of diffusion, etching one side of the said diffused Si wafer in an alkaline solution, introducing the etched Si wafer to the step of rinsing and drying in infrared(IR) lamps.
...
High Temperature Superconducting (HTS) motors consist of HTS field windings in the rotor and the stator consists of air gap copper windings. The rotor consists of HTS make field coils instead of normal copper coils. The invention proposes manufacture of compact, lighter and noise free motors, which suits the strateg...
A method of fabrication of grinding rolls, where cast wear part (metal-ceramic inserts) of grinding rolls is reinfored by ceramic pads having excellent weart resistance with toughness. Ceramic pads are fabricated with abrasive grains which is a mixture of Aluminium Oxide (Al2O3)(60-70 wt%), Zirconium Oxide (ZrO2)(30...
A method of protection of a transformer including its core, bushing and winding from high amplitude surge voltage due to lightening or any system disturbance, or both by incorporation of an additional coil 4 in series with the lightening arrestor 3, characterized by coil being of high cross sectional area and conduc...
The present invention relates to a fixture to regulate rotational lags in on-load tap changer fitted in a transformer. The fixture consists of a fixture (F) to regulate rotational lags in on-load tap changer adapted in a transformer comprising two gears, gear I (5A) and gear II (5B) fixed on a base plate (9) maintai...
"A method for operating an improved an improved Nano-fluid based liquid coupled air pre-heater for coal fired Boiler"
The invention relates to an improved nano fluid based liquid coupled air heater for preheating the combustion air in pulverized coal fired boilers. The invention makes use of the nano-fluid in a clo...
The invention relates to an improved non metallic expansion joint to eliminate
leakage of flue gas and bed ash particles in primary loop of combustor of a
circulating fluidized bed combustion boiler comprising an upstream duct portion
having a length; a downstream duct portion having a length, said upstream and
...
The invention relates to an improved volute casing for high capacity pumps to
mitigate secondary flows and losses caused by twin vortices and eliminate flow
reversal at the exit of the volute casing, the improvement is the circular section of
the volute casing is reconfigured to have partially at least a straight...
An improved Bed Lance assembly for CFBC boilers a compressed air connection
(2) connected on a seal box (1); an isolation Ball valve (3), isolating flow of
compressed air to one atomizing nozzle (6); a plurality of guide pipe (4) with
annular air passages internally accommodating the one atomizing nozzle (6);
an...
The invention relates to a method for identifying different grade ferromagnetic
materials through measurement of coercive force, comprising the steps of
magnetizing an area of a sample piece selected by a probe; demagnetizing the
selected area; measuring the coercive force; comparing the measured value with
stan...
The invention relates to an improved device for drilling of holes on insert cover
of a stator body in a turbogenerator comprising : a base plate (1); a arm (2)
rotatably fixed at the centre of the base body (1); a balance weight (3) to
counterbalance the weight of other components, so as to ensure a free rotation...
The invention relates to an automated self-testing device for testing of microcontrollers of electrostatic precipitators (ESPs) used for air pollution control in manufacturing plant comprising a self-test dongle (l)connectable to at least one micro-controller (2) of the ESP having a display module (3); a set up tran...
The invention relates to a high capacity welding wire holding device in an orbital
TIG welding machine to multiply the productivity of the machine, comprising a
bracket mounted on the body of the welding machine; a spool-fixing roller
having a first flange including a driving pin mounted on a support roller havin...
A single tool holder deployed for edge preparation of tubes of
various sizes consists of a tool holder having three slots at 120 degree apart
when three tool blocks (2, 3, 4) are accommodated in the slots with provision of
adjustability wherein cartridges with carbide insert firmly clamped in the tool
block are ...
The invention relates to a device for testing operability of a traveling block (6) in
an oil rig, comprising a bottom assembly (14) accommodating the traveling block
(6) adapting a link plate (15); a top assembly (13) vertically movable on
application of load alongwith the traveling block, and supporting the trav...
The invention relates to an apparatus for detecting sound emanating from inside
the fossil-fuel fired boilers, comprising a sound sensing device constituting a tube
angularly mounted to the water wall of the boiler; an electronic sensor of a
sensor assembly mounted at a spaced-apart position in respect of the sid...
The invention relates to a method of manufacturing transformer tank to reducetransportable dimensions of large rating power transformer for safe andeconomical transportation the transformer comprises a plurality of activecomponents including the interconnecting components all of which being...
An improved inlet opening of the empty chamber of a fluidized bed heatexchanger for uniform and smooth flow distribution of solid ash particles into the bundlechamber, comprising;an inlet opening unit (3) of predetermined dimensions (X, Y, Z and A, B, C) fixed to theempty chamber (1) ...
An improved method for the production of fly ssb based abrasion resistant ceramics byi ) passing fly ash through ferro—filter to removei ron i mpurities,ii) wet mixing intimately by ball milling the rawmaterials in the range of Fly ash s 5 - 60%,
This invention relates to an improved pelton runner bucket device for converting hydraulic energy of water to rotational mechanical energy of a hydroturbine, the device comprising a plurality of buckets, each bucket having atleast two sculptured bowl-like bucket faces (4) adjoined by a splitter (2), each of ...
An energy efficient process for sintering commercial grade alumina composition comprising the steps of :- mixing alumina, calcified clay and manganese oxide with total alumina content of about 85% with water in ballmills and spray drying the mixture to form dried powder;- pressing the powder in m...
A formulation for encapsulation of photovoltaic (PV) modules comprisingEthylene vinyl acetate (EVA), a cross linker, an UV stabilizer, a bonding agentand an antioxidant such as herein described, said cross linker being present in 1to 2 parts by weight based on 100 parts by weight of EVA, sa...
A method of performance evaluation of arc welding power source to controlquality level of welding power source comprising the steps of measuring thestatic and dynamic characteristics of welding power source by measuring theopen circuit voltage of the welding power source, measuring are curr...
The invention relates to a system for online computation and control of bulksolids feed rate to pulverizers adapted in coal-fired boilers, comprising a feedingdevice having a motor (10) driving an eddy current clutch (11) which drives aconveyor belt of the pulverizers, the feeding device co...
The invention relates to a computer-implemented method for precise control ofwelding distortion arising in welded fabrication. The method comprises the stepsof determining a base reference value in respect of angular distortion via an on-line estimation between atleast two weldable members ...
A process for coal admission in a gasification system through a high -temperature bulk-solids recirculators, the recirculator comprising: a bubble cap distributor (2)) receiving clean coal gas/insert gas via a plurality of gas inlet pipes (03), and dual gas chamber (04), the coal gas/intert gas being supplie...
A fluidized bed char combustion device adaptable to a fluidized bed gasificationsystem comprising of a gasifier (1), atleast one particulate collection means (2) toretain the ash and char particles separated from the gas and a bulk solid recirculatorprovided optionality for recycling the so...
This invention relates to a gravity fed oil fired burner for generation of heat having technical features (inventive features) of a) receiving oil from an oil tank disposed at a height higher than the burner cup; b) delivering oil by a first pipe line (2) to the burner cup via an oil entry port (1) for atomi...
1. An improved heat exchanger device adaptable for cooling electroniccomponents mounted over at least one external surface of the device, comprising abase plate (1); a cover plate (3); a clad sheet (2) interposed between the baseplate (1) and the cover plate (3) the base plate (1) and the c...
Accordingly there is provided a high temperature bulk-solid recirculator adaptable to high pressure fluidized bed gasification systems, comprising; at least one bubble cap distributor for fluidizing bulk-solids, the distributor receiving a coal gas/air/inert gas/steam via an inlet pipe at a pressure higher t...
The present invention relates to an improved motor operated raw coalisolation device adaptable to open and close the outlet of a raw coal storagebunker disposed below the bunker in a thermal power plant. The devicecomprising a fabricate corrosion resistance body (06) having at least two
Accordingly, there is provided an apparatus for on-line computation and control of bulk-solids feeding to a combustion system having a plurality of system controllers ; said apparatus comprising: a bulk solids feeding device having a drive motor directly connected to a. tachogenerator, and a clutch means cou...
This invention relates to a taper sleeve adaptable to one of a horizontalboring machine and a drilling machine for manufacturing of an oil duct in acomplex location of a turbine bearing, characterized in that it comprises ofa first portion (A) and a second portion (B) configured from an one...
1. An improved flow-distribution device adaptable to a gas turbine combined cycle system, the system comprising a turbine (3) oriented one of a vertically or horizontally which emits exhaust gas; a heat recovery steam generator (5) for receiving the exhaust gas; the device comprising a transition duct (4) di...
This invention relates to a device for improved fly ash recycling in bubblingfluidized bed combustion systems at high temperature of fly ash having partlyand / or fully unburnt carbon in operating compartments or segments of fluidizedbed systems, the device characterized by comprising:
The present invention relates to a gadget for monitoring and controlling the flow of fluidtransporting the solid particles such as pulverized coal, comprising the installation ofrack and pinion mechanism for converting the rotary motion, initialized by the steppermotor movements based on th...
a water tank (1) partially filled with water (6) and accommodating a closed componant(7) submerged in the water (6), an ultrasonic wave ganarator (2) also having a receiver disposed at a gap (6) from the closed component (7) being partially submerged in the water (6), the generator (2) being operable to tran...
This invention relates to an a narrow-width plate bladed radial fan for highpressure application, adaptable to a boiler of a steam generation system used inone of a power and process plants, comprising a shrouded impeller (01) havingatleast one formed blade fitted with a back/center plate (...
The method proposed is to specially cater to the needs of sintering of objects by providing partially absorbing boundary around the object so that a inner wail temperature matches with the component surface temperature providing an isothermal volume which reduces heat loss from surface. This results in more ...
A spray pyrolysis process for the synthesis of nanostructured aluminapowder comprising the steps of preparing a liquid precursor solution bydissolving together hydreted aluminium nitrate and amino acid (solid, glycine)in de-ionized/distilled water, maintaining the solution concentration in ...
A method for removing hydrogen sulphide from a dry hot coal In a hot gas cleaning system comprisingA method for removing hydrogen sulphide from dry hot gas in a hot gas cleaning system for replacing the existing wet scrubbing system for improving the efficiency of clean coal combined cycle power genera...
The invention discloses a system for heat treatment of 9cr 1Mo reheater tubes assembled in a bundle. The tubes are bundled with close pitch such that at least one tube each having higher outside diameter being disposed at two extreme ends and the remaining tubes having identical outside diameter Intermediate...
Thus, in one aspect of the present invention there is provided a device forachieving an optimum guide vane clearance in Kaplan and Francis type hydroturbines, comprising: a pivot ring rigidly fixed on one of a runner envelope, and astay ring the pivot ring having female threads internally c...
An improved water cooled globe valve with cooler jacket adapatable to high temperature usages comprising:-- a body (1) having at least one flange (2) at both ends covered with a metallic jacket (4) maintaining a gap (5) between the body (1) and the jacket (4) for passage of water flow into an internal ...
The invention relates to an enhanced controller to control and monitor the operation of electrostatic precipitator adaptable to industrial plants. The precipitator (04) comprising a plurality of fields with collecting and emitting electrodes, each field being energized with atleast one high-voltage transform...
An improved boiler maintenance support structure comprising a plurality of individual structures configured in a shape of rows and columns releasably jointed via atleast one interchangeable node, the individual structures being interconnected by means of a plurality of nodes, each individual structure compri...
The raw coal feeding device deliver coal in proportion to the fuel demandgenerated from the combustion control means envisaged in the boiler. Theinnovative aspect of this invention is to integrate advanced microprocessor /microcontroller based modules to execute the functions, such as logic...
The invention relates to an improved 3-phase rectifier device directly mountableon an alternator adaptable to diesel electric locomotives which comprises at leasttwelve heat sinks (11) mounted with insulation bars (15,16) on a base plate (1)configured identical to the profile of a stator ca...
A microcontroller-based flame detection apparatus adaptable to a boiler system for combined and synchronous monitoring of burner flames to avoid accumulation of unburnt fuel components in the boiler system is disclosed. The apparatus comprises atleast four scanner heads (1), atleast one detector amplifier (5...
This invention relates to an improved ceramic ball adaptable to tube mill for crushing and grinding coal, comprising a solid ball (5) configured using a hard ceramic having diameter between 30 to 50 mm, wherein the specific gravity of the ball being maintained in a range between 3 to 5. ...
Electrostatic precipitators are used for collecting dust particles from dust-laden gases. For example in a thermal power plant electrostatic precipitator is used for collecting fly ash from exhaust gas or flue gas from furnace. The collected dust particles are dislodged from electrode plates using tumbling
Accordingly there is provided a tube flattening device having atleast one tubereleasably disposed thereon for surface flattening, the device comprising: at leastone end plug removably insertable at one end of the atleast one tube; a fluid-pressurizing pump connected to the other end of the ...
A brushless exciter capable of providing initial excitation power during fieldflushing enabling black start operation of brushless synchronous generatorscomprising a plurality of stator poles (2) having pole surface; at least one d.c.field winding (3) for excitation; a three phase armature ...
The gas is passed through a precooler & chiller where it is cooled to atemperature of about 2 - 3°C. The excess moisture gets condensed & is drainedout. The hydrogen circuit & refrigerant. Freon 22 circuit are independent. Forsafety reason, the electrical equipment & hydrogen carrying equip...
An improved coal crushing mill consisting of a feed pipe (27), a rotating bowl (11) where coal falls at the centre of the bowl through feed pipe, the. bowl is lined with hard liner called bull ring segment (07), grinding rolls (10) where coal is grinded in between the grinding rolls (10) and bull ring segmen...
The invention relates to an improved pressurized fluidized bedgasification reactor adaptable, in particular in a coal basedcombined cycle power plant, comprising one free board zone (14)acting as a common zone provided with a gas outlet (15); afluidized bed reactor zone (13) having at...
The present invention relates to a chromium-molybdenum-vanadium steel containingniobium comprising the element in weight percentage: Carbon - 0.08 to 0.12, Sulphur -0.010 to 0.015, Phosphorous - 0.01 to 0.020, Silicon - 0.30 to 0.60, Manganese - 0.50to 0.80, Chromium - 1.20 to 1.50, Molybde...
A liquid fuel burner device for heating the bed in a pressurized fluidized bed gasifier comprising a pipe (01) forming a housing, a flame stabilizer means (02) disposed in the housing (01) to stabilize and retain the flame by creating mixing and recirculation zones, the recirculation zone contributes the sta...
Accordingly, there is provided a triggering and real time monitoring system forSVC-thyristor valves, the thyristor valve (V) comprising a plurality of anti-parallelthyrsitors (T) having a plurality of monitoring cables (RC), the number ofthyrsitors (T) and the number of monitoring cables (R...
A dual cooling water system adaptable to power plants having at least onegenerator air cooler for cooling hot air in the generator air cooler (1) withatmospheric air in winters and with water in summers, the system comprisinga forced cooling water device imputed to the at least one generato...
This invention relates to a method of producing 'micro-porous ceramicmembranes' of disk/pellet type for filtration/separation processes/systemscomprising the sequential steps ofa) mixing/grinding of alumina powders of different sizes and other additiveslike, pore former, binder, dispe...
A method for installation, dismantling and re-installation of a wind generatormounted at a height of at least 30 m without the aid of a long-boomedcrane, the generator (04) comprising at least one bearing housing (07), agear box (06), a hub with a plurality of blades (08) and a nacelle with...
A control assembly adapted for use or a vehicle to be controlled inresponse to variations in first and second control signals, comprising astationary mounting member and a handle (33:57;69) adapted to be held in thehand of an operator. The handle is moveable in forward and reverse directio...
Accordingly there is provided a process for testing the functionality of theelectrostatic precipitator used for pollution control which is capable of adaptingthe advanced simulation technique, in particular a simulating technique capableof simulating the back corona conditions occurring in ...
With the foregoing objects in view, the present invention provides a compactcondenser which comprises, a steam inlet through which steam is received, a plurality ofcooling tubes for condensing the steam received through the steam inlet, a condensateoutlet through which condensate produced b...
An improved stepped block tubular air preheater adaptable to thermal power boilers, the preheater comprises atleast three blocks each block being comprised of a plurality of hollow metal tubes extending at both ends so as to terminate into a plurality of tube plate thereby forming atleast three blocks. The ...
An advanced rapper operating method for electrostatic precipitation (ESP)comprising o a rapper controller (7) which switches ON or OFF a rapper motor(12) through an output card (9), the ON or OFF status of motor (12) beingconveyed to controller (7) by input card (10), the said rapper contro...
The invention relates to a novel supporting device to reduce deflection and weight of removable, overhanging pivot ring of Francis turbines, the device comprises a pivot ring (1) releasably attached to a stay ring (3); a draft tube cone (2a,2b) having a top portion (2a) and a bottom portion (2b), the top por...
The device ensures uniform and quick heating of the bed, and comprising; afixed union assembly (01) having at least one fixed union (03) with at least twoports one each for fuel oil and an atomizing medium, a first guide pipe (04), anda screw rod (07) for attaching a removable union (13) of...
A device for resolution measurement in an ultrasonic test system comprising- a single block (1) having a plurality of faces (S1 to S8) configured at differentheights (h);- a transducer positioned at the centre;- a hole (H) drilled in one of the said plurality of faces; and- an u...
A process for high-frequency longitudinal welding of a tube to a flat steel fin Comprising:- feeding of at least one tubes (1) through a set of rollers (8); feeding a steel flat fin(2) in the longitudinal direction of the tube (1); pressing the tube and the flat steel fin (2) to be joined against...
A shutting down device for a pressurized fluidized bed gasifier, the gasifieroperating at a bed temperature between 900° to 1100°C; and being in a state ofshutting down by cutting-off supply of feed coal followed by stoppage of the flowof air and steam, the device comprising a liquid nitrog...
Thus the invention is directed to a further development that the dissimilar wirecombination is fed using a single wire feeder with a single nozzle drawing powerfrom a single power source with parameters of 425 A, 28 V and 0.5 m/min aswelding speed. A single weld pool is created in which the...
Accordingly, there is provided a device for emergency stoppage of a wind electricturbine, the turbine comprising a generator, a gearbox, a bearing housing, a hub for mounting of plurality of blades, and a plurality of blades, a main shaft of thegearbox having a flange for mounting the...
A method of surface preparation on a member (4), by depositing similaror dissimilar materials using a friction heat generatable between tworelatively moving surfaces under applied pressure, the method comprisingthe steps of:- creating a groove (5) by machining in a material;- pr...
The invention relates to a system for automatic and optimum load sharing of aplurality of generating machines in hydro power plants, the system comprisingan ALSS (Automatic Load Sharing System) configurator module (3a) for providinginputs, the configurator module (3a) containing project spe...
Accordingly, there is provided a compact device for producing and feedinguniformly bent wire for oscillating the arc in narrow gap gas metal arc weldingprocedure, the device comprising a wire spool accommodating a continuousstraight wire. A wire-feeder drawing the wire from the wire-spool v...
This invention relates to a Gas Turbines designed to operate on ‘high Hydrogenfuel gas’ with liquid fuel as start-up/alternate fuel require Nitrogen blocking andpurging for safe operation of the Gas Turbine. The Nitrogen for this purpose isrequired at high pressure, with wide variation in t...
Accordingly, there is provided a redundant liquid fuel system adaptable to gasturbines for pumping, metering and supplying pressurizes fuel via fuel nozzles tothe combustors of the gas turbines, the system comprising a skid base foraccommodating the devices of the system. A solenoid operate...
Accordingly there is provided an improved system for cooling flamescanners in a gas turbine plant operating in a desert environment,comprising an expansion/mark-up tank disposed at a level higherthan a level of a water-circulating pump, the water circulating pumpbeing disposed in a cl...
The present invention is provided with an improved flexible lubricity additivedosing system adaptable to a gas turbine operating on naphtha fuel, comprisingan unloading device having a portable motor driven barrel pump for transferringlubricity additive from a barrel to a storage tank, the ...
The present invention relates to an ultrasonic testing method to map out defects in an object comprising of placing the transducer (1) of the ultrasonic testing system on the object (2) so as to direct ultrasonic waves towards the probable discontinuities (3) moving the transducer (1) on the object (2) in a ...
An axial thrust pick-up device adapted to hydro model turbines fordirect measurement of axial thrust on the runners including theblades of the turbines comprises an outercasing (7) having a grooveconfigured at the bottom. A sensor means (1) disposed in thegroove, atleast four strain g...
The invention relates to a metal joining process of welding using electric arc as thesource of heat for melting the joinable metals. More particularly, the invention relates to asystem for diagnosing the dynamic characteristics of arc welding power source.
Novel process for design of converter transformer valve winding comprising aprotective coating disposed between the copper conductor (1) and a first layer ofpaper insulation (2) and a second layer of Enamel insulation (3) of the valvewinding to protect the valve winding from insulation fail...
This invention relates to an integrated shut-off device in a fuel-firing system of aboiler, comprising an elbow-shaped gate body (1) with ceramic lining, the body(1) is so configured to allow an approachable space for maintenance havingprovision of a ceramically-lined rotatable disc (2). Th...
This invention relates to a bushing tap device, connectable to a bushing tap assembly, for online monitoring of a transformer bushing, said device comprising a brass stud (10) arranged in a brass cap (40), with one end of said brass stud (10) connected to a insulated copper wire (20) for onward connection to...
This invention generally relates to a natural circulation, vertical and integral steam drum type steam generators generating dry saturated steam. Particularly the invention relates to steam generators adaptable to pressurized heavy water cooled nuclear reactors. Particularly, the invention concerns the modif...
This invention relates to a drilling device for configurating root holes on rotor blades, in particular pin-type rotor blades of turbines, comprising a drilling fixture (4') having a U-shaped clamp (5) for forming atleast one pin-hole (9) on a disc (4) of the rotor blade, the clamp (5) having atleast two con...
A permanent magnet generator for synchronous generator, comprising: a rotor(8) having a sleeve (1), the sleeve (1) constitutes atleast one flat surfaceconfigured thereon a plurality of tapped holes (9); a sfator (10) wound with threephase fractional slot winding (12); a plurality of magnets...
This invention relates to an apparatus and method for producing a sacred ash, the apparatus, comprising a substantially cylindrical vessel (2) having atleast one grate opening (3) at a bottom segment, the top segment of the cylindrical vessel (2) being connected to a chimney (5), the bottom segment being fix...
The present invention relates to an embedded device and a method forestimation of degree of polymerization (DP) of cellulose based paper insulation oftransformer comprising means for collecting cut paper samples from the leadingends of a transformer, means for conveying said collected paper...
Accordingly, there is provided an improved torch for narrow gap - gas metal arcwelding comprising a central tubular member for feeding a wire, an water inlettube, a water outlet tube, a gas inlet tube, a first solid block to hold atleast onecontact tip, a plurality of outer flattened tubes ...
An improved tool for carrying-out friction stir welding of metal plates of higherthickness comprising a tool body in the form of a cylindrical shank (1), a lowerend of the shank (1) acting as an operating end provided with a pin (5); and ashoulder (2) configured in the shape of a spiral (3)...
An improved friction surfacing method to produce a surfaced layer on a substrate using powder material the method comprising: - providing a substrate having a base material (6); - providing a rotatable tool (1) having a profiled configuration (4) and a hole (2) to conduct a powder m...
A tool holder adaptable to horizontal machining centre, comprising: a main bar(1) having a shank adaptable to the horizontal machining centre and a tool slot(S) for clamping of the tool including a fourth hole (H4) for clamping; a lever (2)fixable on the main bar (1) by a first hole (h1) of...
This invention relates to an improved environ-friendly, energy saving microwaveprocess for fast sintering of shaped porcelain components in air from quartz based rawmaterials consisting of feldspar, washed clay, raw clay, quartz, pyrophyllite and felcitecomprising: firing shaped component i...
The invention relates to a venturi nozzle for mixing solid particles withpneumatically transported air stream, comprising an angular air inlet reducer(17) configured to have an angle (18) between 15 to 30°; a plurality of holes(19) configured at the outlet of the reducer (17) to create a hi...
An improved rotor for detecting earth fault of rotor winding through DC rings ofbrushless exciter in synchronous machines, comprising DC rings (5), rectifierwheel (4), non-continuous contact type brush gear (10),Characterized in that DC rings are mounted on one side of the rectifier wheel (...
A test apparatus (A) for quick detection of shunts present in industrial silicon solar cells and a method for the same consists of a metallic plate acting as a vacuum chuck (1) for the test cell (S), a set of probes (2) for making electrical contact to the cell (S), a DC power supply (3) for applying reverse bias to...
A system of pressurized fluidized gasification with integrated char gasifier fluidizing with steam comprises of a gasifier (1) for gasification of coal, at least one particle collection means (2) for retaining the ash and char particles separated from the gas and at least one separation means (3) for diverting the s...
An auxiliary device for GTAW torch gas nozzle for additional co-axial shielding with
argon gas for welding of Titanium comprises a centrally hollow cylindrical body (1)
having a close rear end and an open front end and a gas pipe is provided on the top of
the body to supply secondary shielding gas for feeding the...
The invention provides a novel flux composition comprising 25 to 0
weight% white titanium dioxide powder, commercial grade, 25 to 30
weight% silicon dioxide powder, silica commercial grade. In accordance
with this invention, there is also provided a novel method for TIG
welding, 25 to 30 weight% chromium oxide g...
The invention relates to a device for displaying local and remote tap position enabling a tap changer to regulate output voltages of a transformer, the tap changer having a motor drive unit and electrically connected to tap windings of the transformer, the device is enabled to : display local tap position number; di...
The invention relates to a method for making the stator core of an axial flux
permanent magnet machine (PMM) is provided. The method includes the usage of
HGL (Hardened glass laminate) rings instead of (Stainless steel) SS-316 rings inside
and outside the stator core which is made up of CRNGO Si (Cold Rolled Non ...
The invention relates to a process for in-situ replacement of damaged casings of
emergency stop valve and control valve to be synchronously operable in
combination with an existing casing of a high pressure reaction steam turbine,
the process comprising the steps of: cleaning the contact surfaces of the inlet
in...
The invention relates to an inline etching system to remove emitter form one side of the diffused Si wafer without affecting the other side, the system comprising a plurality of rollers for transporting silicon wafers for production of solar cells, the rollers have slits of narrow width and disposed inside a shallow...
The present invention relates to a device for taking out the Transport and Assembly plate from assembly of unwound core of 600 / 660 MW turbo-generator with the stator body. The device is kept below the assembly of unwound core within the stator body with jacks abutting the bottom surface of Transport and Assembly p...
A locking device for valves for implementation during transportation of turbine valves of 660/700/800 MW supercritical steam turbine consists of a plate assembly (1) having holes (10,11) for allowing a bolt (2) and a hexagonal screw (4) to pass through. The bolt (2) is fixed to a plate (3) by tack welding. The hexag...
Amorphous silicon (a-Si) layers are deposited by Plasma Enhanced Chemical Vapour Deposition (PECVD) process in vacuum chamber for fabrication of solar cells. Silicon wafer is placed on the stainless steel wafer carrier (C) which is placed in the vacuum chamber for heating. In vacuum chamber (V) there are heaters (H)...
The invention relates to an improved three phase Gas insulated multi-port bus bar module for three phase electrical systems, comprising a plurality of bus bar [01] enclosed in a metallic chamber and terminated with multiple shields [08] and sockets / HT integrators [04] arranged in right angled or at any arbitrary a...
A modified traction transformer for a GTO/IGBT based 3phase drive electric locomotive that comprises of a primary winding, an auxiliary winding, a filter winding, plurality of traction winding and plurality of split hotel load winding wherein an additional hotel load winding are disposed within a winding housing of ...
A compact high voltage gas insulated surge arrester (28), comprising parallel and series metal oxide stack assembly (06), of metal oxide elements (01), in an insulating housing (07), fixed on metallic support plate (18).
Printed and fixed solar cells are exposed to light. External metal contacts is made with grid lines employing flat bottom, spring loaded, gold coated pogo pins. Heavy photo current generated is short circuited employing printed contacts through bus bars. Voltage is measured between each pogo pin and said bus bar. Vo...
A method of removal of fine particles in a power transformer, the said method comprising the steps of keeping the power transformer static for a predetermined period of time; allowing fine particles to settle on the base of the power transformer tank; removal of the settled fine particle from the base of the tank by...
A method for preparation of high wear resistance refractory panels in CFBC boiler comprises the steps of: - selecting inert refractory powders for providing refractoriness and thermal shock resistance; - forming of a bonding phase with reactive ceramic powder for better sintering behavior with selective particle siz...
A steam strainer assembly for steam turbine for trapping all debris, the assembly comprising: an inlet (12) and outlet (13) portions; a steam strainer housing (1) to transfer and clean the steam coming from boiler to turbine; a steam strainer (2) is welded over the blanking device (3) of said housing (1); a graphite...
The invention relates to a device for dynamic multidimensional/tri-axial displacement measurement of boiler tubes in a Boiler with Linear Variable Differential Transformers (LVDTs), comprising a rectangular box stand (1) which is rigidly welded on the wall of the CFBC chamber and contains a plurality of holes on the...
The present subject matter relates to 3D impeller of centrifugal compressor stage with high flow coefficient for compressing fluid with high aerodynamic efficiency. The 3D impeller comprises a rotor, a hub disc (1) and shroud disc (3). Further, the 3D impeller comprises a plurality of blades radially protruding from...
The present subject matter relates to 3D impeller of centrifugal compressor stage for compressing fluid with high aerodynamic efficiency. The 3D impeller comprises a rotor, a hub disc (1) and shroud disc (3). Further, the 3D impeller comprises a plurality of blades radially protruding from the hub disc (1) and space...
The invention discloses to a system to determine day-ahead loading pattern forecast of heavy machineries in industries and proactive control of peak load overshoot by curtailing pre-designated individual heavy machineries. The system uses artificial neural networks to predict the load on a day-ahead basis by learnin...
According to the invention, a method of weld sequencing for welding the burner panel (P) used in high pressure, high temperature steam generator, is disclosed. The welds available in in the panel are classified as vertical welds (7), horizontal welds (5) and inclined welds (6) depending on their configuration. The v...
A Signal Conditioning system for measuring current density in an electrostatic Precipitator (ESP) that comprises: - a Signal Conditioning Module (SCM) (1) that comprises plurality of impedance (6) coupled to a unity gain amplifier (7); - an electrostatic test bed of a movable collecting electrode (CE) (2) and a Stat...
The invention relates to a three phase compact gas insulated earthing switch, comprising a three phase compact gas insulated earthing switch, comprising a fixed arcing contact; a fixed contact shield; a moving contact; a moving contact shield; a grounded spherical enclosure; an insulator cum guide; and an insulated ...
A cold sawing machine (1) with saw blade disposed in the system of making seamless steal tube when a fabricated disappearing stopper plate (5) is disposed in the system. The said stopper plate has dampened plates inside to absorb shock while the tubes coming from previous operation hit the stopper plate (5). The sto...
The present subject matter relates to 3D impeller of centrifugal compressor with low flow coefficient for compressing fluid with high aerodynamic efficiency. The 3D impeller comprises a rotor, a hub disc (1) and shroud disc (3). Further, the 3D impeller comprises a plurality of blades radially protruding from the hu...
A remote terminal unit (RTU) (207) for supervisory control and data acquisition (SCADA) in a distribution management system (DMS) comprising, a no. of data acquisition modules (103-106), a central processor module, a single board computer (SBC) along with SBC card (102), PC based configuration tool (206) , universal...
Manufacturability of Oxide dispersion strengthened (ODS) blades have been under intensive development over the past decades due to their excellent high-temperature creep strength and good oxidation resistance. ODS steel alloys are the oxide strengthened steel alloy with oxide evenly distributed throughout the matrix...
The present invention provides an arrangement for a roof top PV solar module with mounting of seasonal tilt structure to facilitate growing of plants utilizing wasted water after module washing. The arrangement comprising an ultra violet resistant plastic tub (6) which is disposed under a solar PV panel (1). A layer...
A method for seamless integration of ACAD drawing to CNC part program generation. The developed method takes ACAD drawing as Input. From this drawing, it extracts the required information of hole data automatically, for generating the CNC code suitable to a particular CNC machine, with different multi spindle config...
Flange (1) is assembled on right hand side of connecting part (10) with the help of Hexagonal head screw (3) and Hexagonal nut (7) to close the open end; and Flange (4) assembled on left hand side of connecting part (10) with the help of Bolt (5) and Hexagonal nut (7) to close the open end where Coupler (8) assemble...
Disclosed is method for achieving higher CO2 capture efficiency from flue gas/syngas from coal fired power plants/IGCC based plants in Hollow fiber absorber by de-wetting Hollow fiber membrane absorbers periodically. The two trains of hollow fiber membranes are employed in which one train is used for CO2 capture at ...
The present invention relates to a device called steam blowing device for HP control valve, function of which is to prevent the leakage of steam form going into the turbine through HP control valve during steam blowing operation comprising a plug (1) having taper surface (F) with four numbers of plates (7), spindle ...
A modified electrical machine for oil rig application comprising of: a frameless stator core (1) sandwiched between end chambers (3) wherein the stator coil (5) is insulated by class 200 insulation; rotor supported on cylindrical roller bearing (26, 27) disposed within the said frameless stator core (1); dual termin...
A magnetic coupling method for uniform application of hydrophobic coating inside a relatively long (10-40 mm) with a small diameter (15 mm) tube without comprising, the heat transfer performance of the tube, the method comprising:- (i) providing a coating applicator, which carries the coating material and pushed thr...
A process for selective thinning of emitter on uniformly doped c-Si wafers by using printed grid lines as a self-mask, comprising:- making PV cell industrially starting from wafer, chemical texturisation, diffusion, edge isolation, PSG removal on c-Si solar cells; depositing grid lines on the electrical contacts by ...
The present invention relates to a compact angular winding apparatus for automation of brush seal winding process. Winding of the brush seal wire (26) on to the brush seal plate (27) is achieved through the rotation of winding mandrel (20). The rotation of mandrel (20) lays brush seal wire (26) on the brush seal pla...
The invention relates to Safety valves which are used to safeguard the damage of steam boiler drum, superheater , reheater and other pressure relief applications. The lapping operation of Disk in Safety valve is carried out manually which is more time consuming and leads to operator fatigue. The surface finish quali...
An insulation device for the current transformers comprising: - multiple number of secondary windings placed on the ring core; - a primary conductor or winding passes through the inner diameter of the ring core; - multiple numbers of composite layers where at least one/or two oil ducts embedded in the said layers; -...
In the high pressure boilers used for power generation requires heat transfer coils named as platen super heaters and re heater coils. In the manufacturing of such coils made of alloy steels and Stainless steel has total length ranging from 18m to 22m with outside diameter ranging from 38.1mm to 76.0mm. A tube bendi...
The invention relates to a process for modification of lead screw for work-piece adaptor to replace a fixed hexagonal head with a replaceable head, the process comprising the steps of machining a square slot on both sides of the lead screw; configurating a through threaded hole on the stud portion of the screw; mach...
A fail-safe bus bar enclosure assembly for gas insulated switchgear with multi point arc trapping arrangement, comprising: a bus bar enclosure (1) welded a thick flange (2) having four cross-way; a stud (3) with a first threaded end, the first end being releasably attached to the thick flange (2) and a second free e...
The invention relates to a device which is a composite fixture (F).On one side of the fixture (F), there is slot to accommodate two thin sheets lapped one over the other for spot welding. On the other side of the fixture (F) there is a cross slot to accommodate two thin sheets in cross fashion to be spot welded. In ...
A system of refrigerant gas distribution and a method of cooling for high temperature super conducting (HSTC) rotor of a rotating machine, i.e. generator or motor comprising cryocooler (101), rotating coupling (103), cold gas sub-header (105), main header (107), chamber for mounted coil housing (109), warm gas main ...
Disclosed is a Radio-Frequency system and method for transmitting load cell signal to a remote location and monitoring thereof. The method includes feeding load cell output voltage corresponding to the load accumulated in ESP ash hoppers to the transmitting section for transmitting the signals to a remote location v...
This invention relates to oil and gas fired boilers, where the boiler is designed for the three fuels namely two gaseous fuels and one liquid fuel. Between the two gaseous fuels one fuel contains no H2S concentration (fuel 1) and another gaseous fuel contains H2S concentration (fuel 2) and Liquid fuel (fuel 3) which...
Abstract
DESIGN AND DEVELOPMENT OF BRAKE BAND LOAD TEST FACILITY FOR TESTING BRAKE BANDS OF VARIOUS DRAW WORKS MODELS
The subject matter disclosed herein relates to a brake band test facility structure (200) to test brake band of drawworks. The brake band test facility structure (200) has a base structure (8) whic...
The subject matter disclosed herein relates to a system to realize time critical control applications, which require time bound data acquisition and processing as well as deterministic data exchange, with a device comprising of dual processors integrated with multiple Field Programmable Gate Arrays (FPGAs). A distri...
Water Repelling And Self Healing Vitreous Composition And Method For Coating Same On Steel Substrate
The invention provides a vitreous composition having self-healing ability and lower surface wettability than conventional enamel and method for coating the same on a steel substrate. The preferred enamel has two separate compositions for ground and top coat. In the disclosed method, fine particles of ground vitreous...
Disclosed is an improved reusable apparatus and method for plugging the nozzles of a mixing sphere (1) during hydraulic testing. The apparatus primarily comprises a stem welded to a bottom plate (6), said bottom plate (6) having a groove, a seal fastened to the groove. The proposed apparatus is a ready-made fixturin...
The present invention deals with the operation of a turbo generator operated in a power plant or industrial establishment and especially on improvising the performance by modifying the existing ventilation system. The present Invention intends to improvise the ventilation system and get more kilowatts by adding a ce...
Disclosed is a manufacturing process of economizer intermediate header for reducing PWHT cycles and straightening activities. The existing headers were built by SA335P12 pipe (01) with SA213T22 (02) and SA210GrC (03) tubes on it. In the present invention, the statutory requirements of headers operating parameters we...
The present invention relates to a two dimensional impeller stage for centrifugal compressor with optimum efficiency and operating range. The said impeller for flow coefficient of 0.009 is made by establishing optimum parameters of the impeller maintaining impeller inlet incidence angle as less than 10 at Hub and le...
The present invention relates to a universal device to insert the hollow insulated cylinder (14) on the field lead core bar (13) of exciter rotor shaft in an assembly set up comprising an upper table assembly (01) placed over a lower table assembly (02) by exerting force with the help of a hydraulic jack (16).
Fi...
The present invention relates to a trammel for marking and cutting metallic fittings by holding gas cutting torch, with attachments for acetylene cutting torches of various types and sizes and which serve to guide the torch during the cutting operation so as to make perfect, or substantially perfect, straight line c...
Return channel vanes (RCV) in centrifugal compressor stage are basically used for reducing the swirl component of the flow before entering into the subsequent stage in order to increase the overall performance and operating range of the compressor. Multi-stage compressors are designed by using individual stages of d...
The invention relates to a tip copying fixture with hydraulic clamping for machining root and profile of gas turbine blades. A root pad (3) fixes the root of the gas turbine slot and top portion of the root of the blade (B) is clamped by a top clamping pad (5) which is actuated by a hydraulic cylinder (4). The hydra...
Overhanging panel mounting arrangement for a floating solar PV solar plant that comprises : - a south end panel mounting comprising a solar panel in which a lower end is pointed upwards and affixed at a desired angle by means of a fork (13) and bracing (4) through fork ends (14); - a north end panel mounting compris...
The Invention is related to compensator and arrangement particularly in boiler field, for absorbing relative movement between the connecting Components. The loop seal connecting duct on the top and combustor connecting duct at the bottom are independently linked by welding the slide-II on the top and welding the sli...
The invention relates to a mechanism to arrest vibration during machining of steam turbine blades for making deep grooving on the same. According to existing profile of a grooving tool, a separate piece (D) of length ‘Y’ is arranged and welded to the original tool (T). A slot (S) of length ‘Y’ is machined on the too...
An automatically re-orientable horizontal axis solar thermal sun Tracker for tracking the Sun from morning to evening to produce increased power output, from SPV panels mounted at latitude angle with horizontal, comprising: a supporting device consisting of one each top, and bottom portion, the top portion formed of...
Abstract
BLAST PROOF CURRENT TRANSFORMER
The subject matter disclosed herein relates to a current transformer (500) with blast preventing capabilities. The current transformer (500) has a primary terminals (501) connected with primary line conductor (503) for transmission of power which runs through a ring core (5...
The invention relates to a device for safe transporting of bladed turbine rotor comprising a structural frame (1) for the bladed rotor manufactured from transverse and longitudinal fabricated beams; a top cover (2) designed in an arc shape considering the maximum blade diameters of the Bladed rotor and internally su...
A single side etcher (1) of silicon wafer comprising a tank (7), a chemically inert chuck (3) adapted to releasably hold a silicon wafer (2) to be etched with the help of vacuum, said chuck (3) being connected to a venture vacuum unit (5) by means of flexible tubing to enable free movement of the chuck (3), said chu...
The globe valve body and yoke are welded by conventional Tungsten Inert Gas (TIG) welding for root and subsequently followed by Sub-merge Manual Arc Welding (SMAW) process. This process takes normally 3 shifts per valve. The drawback with this type of valve frequent failure due to seat crack, leads to rejection of t...
This invention relates to a realistic determination of lower critical transformation temperature in grade 91 weldments based on the experimental physical simulation conducted in thermo mechanical simulator. The grade 91 specimen was subjected to austenitising treatment at appropriate temperature at a heating and coo...
The invention relates to a clamping device for holding a steam turbine blade in a blade root and tennon manufacturing process, the device comprising a blade root thrust pad 8 to hold the blade root 5 so that the blade B can be clamped in the device; a blade root top clamping Pad 9 to hold the blade root 5 from upper...
The invention relates to a fan blade with improved profile to provide an efficient ventilation system in an electric machine or turbo-generators for enhancing cooling. The method of manufacturing the fan blade comprises selection of a composite material or carbon fiber for the aerofoil profile built on a hollow base...
An Universal Shroud Locator Block For Root And Shroud Milling On Horizontal Machining Center Machine
An universal shroud locator block (A) comprising a shroud locator block (3), a wedge (5), a cassette (10) and a cover block (2). The block (3) having four number of counter holes (7) is clamped to the machine fixture base. A wedge (5) fits into a slotted portion (8) of the block (3). The cassette is configured in th...
The invention relates of a method of cutting process with the invented device having horizontal pipe loaded on the motorized roller with guide roller with help of crane.The motorized rotor is turned on for which speed can be maintained based on pipe thickness and cutting speed can be controlled by the speed regulato...
A hair-pin type heat exchanger as per Fig. 1, for replacing gasket easily without complete removal of U-tube bundle assembly (5) comprises a cylindrical shell (1) with shell flange (2); at least plurality of channel assembly (3) whichis also having channel flange (4); at least plurality of U-tube bundle assembly (5)...
A device for condensing solvent vapours in soxhlet extraction apparatus comprising: a cooling unit (1); a control unit (2); wherein said cooling unit (1) further comprises: a reservoir tank (3) for storing water; a submersible pump (4) placed in the tank; a cooling tower (5) alongwith a helical copper tube (6) for c...
The invention relates to disclosed is a Portable wrap bending apparatus and method for making radius bends in tubes for helical-tube heat exchanger. The tube is held in position by using the clamp pad (3). Further, the tube is positioned over the wrap bending former (8) via bolts (4). The hydraulic cylinder (1) moun...
An apparatus for argon purging at the butt joint welding comprises: a semi-circular guide (1) tube for providing shield at the root of the joint; a bent tube (2) fixed at the centre of guide; a ceramic fibre cloth (4) for ensuring complete removal of leak of argon gas; a lifting mechanism enclosed in a gear box (5),...
An in-situ process for repair of turbogenerator stator winding bars (6), involving partial dismantling of the turbogenerator, comprising the steps of identifying the failed winding bar; disassembling and pulling out faulty winding bar and removing deposits by cleaning and cutting; carrying out test of the remaining ...
A modified hybrid excited synchronous generator that accommodates excitation windings and permanent magnets in a rotor core for regulation of output voltage and reducing risk of demagnetization of the permanent magnets, wherein the rotor configuration is improved that comprises: plurality of slot openings (201) at t...
The present invention proposes a bimetallic turbine casing with novel features in the casing which shall be capable to operate for a temperature range upto 710? and to meet the operational requirements. It uses a high temperature material (HTM), such as but not limited to nickel based alloys, on the high temperature...
Disclosed is an improved drive housing apparatus for implementation in gas insulated switchgear applications. The apparatus includes a drive housing member being demountably fastened to the guide cum support plate, said drive housing member having a demountable top surface with cover and a demountable bottom surface...
The improved solar thermal sun tracker (T) carries an early wake up system (10) which can make the tracker to wake up before 6 AM resulting an improvement of the total energy gain of 7-8% from the tracker. The tracker is provided with an early wakeup heater to western side liquid containers for rotating tracker towa...
An improved rotor configuration for an electric machine comprising, at least a permanent magnet slot(101) aligned on peripheral of the rotor, at least an excitation winding slot (103) positioned below a permanent magnet slot (104) at extremes of each pole, an inner slot opening provided to link the excitation windin...
A high power shock proof permanent magnet motor control system panel up to 50 KW, accommodating all the motor control accessories for two stage power conversion including high speed digital signal processor characterized by, shock withstand capacity up to 280g for 2.5 ms operating temperature withstand capacity with...
PRESSING OF MINI PANELS IN BURNER PANEL OF A TOWER TYPE BOILER IN 2000 T PRESS
The subject matter disclosed herein relates to present method of fabrication, instead of bending of each tubes separately, a straight panel is being formed with all process allowances in 20 torch panel formation machine. This straight pa...
Torque tube plays a vital role in supporting weight of the rotor, minimizing heat-in leak and transferring high torque from the cold temperature end (HTS rotor) to the ambient temperature end of the machine under all steady-state and transient conditions. In order to satisfy the requirement of high yield stress and ...
A method for coil magnetic particle inspection in pipe bends of a boiler method comprising the steps of: selecting an arrangement of current carrying coils in elliptical shape; selecting a suitable current “I”; calculating distance “D” for flexible coil shifting away from pipe bend surface; selecting an arrangement...
This invention relates to a method of manufacturing of T23 gang bend panel for high pressure and high temperature steam generators comprising steps of:- forming of straight panel by securing a plurality of tubes with multitude of fin flats, - fixing a bend tube with a support lug to form a sub assembly, - connecting...
Welded components may get distorted after the weld cools down to room temperature. This distortion has to be controlled by proper welding parameters or sequence. These distortions may be acceptable when they are within a limit. To measure and check whether the distortion angle is within the limit, gauges are not ava...
The present invention relates to a roof top solar Photovoltaic (PV) plant with seasonable tiltable mechanism comprising at least a solar Photovoltaic (PV) module (1) mounted and clamped at both ends of a galvanized iron pipe; wherein one end of the PV module is fastened for a long angle for seasonal tilt (3) that in...
The invention relates to a Position transmitter for HP Control Valve Servomotor comprising a Control arm, a support an insulation plate and a magnet, wherein the linear stroke of the control valve can be transmitted to generate a movement of the magnet via a lever through the Control arm over the position transmitte...
In the existing Magnetic Particle Inspection (MPI) equipment for inspection of cracks in valve bodies we need to do minimum two times of clamping & de-clamping of the current cable connections in the valve body. This leads to more time consumption and material handling during MPI testing. The new developed method pr...
The invention relates to a method of manufacturing forged medium check valve with angular contact disk and seat ring for high temperature and medium-pressure applications, the method comprising the steps of; casting a valve body (02) with machined inlet and outlet and carrying out in the middle of the inlet and outl...
The invention relates to the manufacturing process of the economizer coils in the high pressure steam generators. More particularly the invention relaters to standardization the major portion of economizer tube of long length before bending, to attain cycle time reduction. The bending machine can handle maximum of 7...
The invention relates to a method of weld-less manufacturing of forged high pressure non-return valve, for high temperature and high pressure applications, the method comprising the steps of integrating a valve body and stub as a single casting to form a modified valve body (16) and machined for inlet and outlet; ca...
An electromagnetic compliant motor controller (100) for high power permanent magnet ac motor (PMAC) comprising an electromagnetic noise filter (EMI) filter (1) for filtering the source noise entering in the system. The filtered AC supply is fed to the main power contactor (2) for ON/OFF control of input power. A pre...
The invention relates to an apparatus to control and monitor all the parameters of an operating transformer including associated sensors in a power plant through a redundant system with seamless communication under SCADA system using IEC61850 communication protocol, the apparatus comprising :one each outdoor unit an...
The invention relates to a low cost solar panel mounting structure of single axis active tracker providing feedback to the tracking system without adapting any additional optical or electrical sensor. The panel mounting structure is configured to have a height adjustable middle section to vary the height of the midd...
The invention relates to a procedure for functional dielectric coating on the surface of metallic conductors, like commercial aluminum alloys or aluminum metal is described. The surface of the metallic conductor, i.e., aluminum metal or aluminum alloy is coated with a ‘nano-composite architecture’ comprising three-l...
A method for analyzing welding fumes comprising setting up a fume hood over a welding table to cover the work-piece and electrode holder, covered with a collector fixing a wire mesh for collecting fumes, over said fume hood, extracting the fumes from the fume hood and allowing particles from the fume to collect in s...
A Modular Type Supporting Device For Accommodating Switchgear Bus Ducts In Power Transmission System
The invention relates to a modular type supporting device for accommodating switchgear bus ducts in power transmission system, the device comprising a plurality of columns and each column oriented in a designed direction; a plurality of inclined bracings connected between at least two of said columns on multiple sid...
The invention relates to a through transmission ultrasonic testing device having at least two hollow handle members each having a head end, a handle end, and an intermediate body portion, further comprising the at least two hollow handle members 100A, 100B telescoped over of signal cable 400 along its length, and ha...
Abstract
METHOD FOR ARRESTING THE MOVEMENTS OF TERMINAL END TUBES AND MAINTAINING ITS PITCH DISTANCE TILL ERECTION
The subject matter disclosed herein relates to a method for arresting movements of the terminal end tubes and maintaining its pitch distance. The terminal tubes panel has been fabricated by tube (02),...
A system and a method for improvement of rapping mechanism of emitting electrodes (02) of an electrostatic precipitator comprising (a) Rapping motor (11), (b) i) Pinwheel – 1(04), ii) Pinwheel – 2(05), iii) Pinwheel – 3(14), iv) Pinwheel – 4(13), (c) i) Horizontal shaft – 1(06), ii) Horizontal shaft - (09), (d) Vert...
A bowl-shaped jig (204) for measuring minority carrier lifetime of a semiconductor (402) is disclosed. The bowl-shaped jig (204) includes a first ring A having a first inner diameter (ID1), a first outer diameter (OD2), and a first thickness (T1). The bowl-shaped jig (204) further includes a second ring B having a s...
A rotor (100) for a series hybrid excitation alternator configured to accommodate both excitation windings and permanent magnets, characterized by, slots (101) for permanent magnets, and slots (102) for excitation winding.
A shipping fixture assembly (200) for a turbine includes a base frame (302) having a substantially rectangular shape. The base frame (302) includes a plurality of transverse beams (304) and a plurality of longitudinal beams (306) configured to be coupled to each other. The transverse beams (304) and the longitudinal...
A work piece fixture for clamping fir tree root of L.P. blades on a 1-spindle 5-axis machine consisting of a block with fir tree grooves (4), made with a fir tree cutter for coinciding center of blade with center of fixture to create a reference point. The fixture (1) is bolted with work piece adapter of the machine...
The three bend offsets are envisaged in water wall panels of high pressure high temperature fossil boilers. Since there is no gap between bends it cannot be bent in the conventional bending machines. Hence a method bending the three bend offset was done using a pressing operation using specially designed die with to...
A radial jack for hydroelectric power generator includes a bracket plate (1) coupled to a bracket assembly. A square plate (2) coupled to the bracket plate (2). A cylinder (3) having one end secured to the square plate, and a plurality of ribs (4) being equi-angularly disposed on circumference of the cylinder (3), t...
Abstract
FORMATION OF BOILER SPIRAL WALL TUBES OF ALLOY STEEL THROUGH STEPPED FORMATION
The subject matter disclosed herein relates to a method (400) for formation of a stepped panel. The two panels, i.e., first panel 05 and the second panel 06 are placed one over the other with an offset distance (D1 and D2) that...
A system for online monitoring and estimation of pulverized coal particle size distribution is provided. The system includes a coal sample preparation mechanism having an isokinetic sampler configured to receive pulverized coal, a motorized dispensing funnel coupled to the isokinetic sampler, the motorized dispensin...
A device and method to remove annular member from an inner member of large turbogenerator.
The present invention relates to a device and method to remove annular member from an inner member of large turbogenerator. The device comprises of a ring assembly (1) secured to said annular member (4) shrunk fitted on the...
Electrodeionization is a water treatment technology that utilizes electricity, ion exchange membranes and resin to deionize water and separate dissolved ions (impurities) from water. The EDI process produces industrial process water of very high purity, using less than 95% of the chemical products used in the conven...
ABSTRACT
“THREE LEGGED TRIANGULAR FIXTURE FOR MANUFACTURING OF WIND-BOX UPPER AND LOWER PANELS WITH BENT TUBES AND PLATES FOR HIGH PRESSURE STEAM GENERATORS”
The invention relates to manufacturing wind-box upper and lower panels in high pressure steam generators. Further, the present subject matter relates to ...
Abstract
METHOD FOR BUTT WELDING OF LOW THICK PLATES WITHOUT EDGE PREPARATION FOR FULL PENETRATION WELDS TO MEET ASME CODE REQUIREMENTS
The subject matter disclosed herein relates to a method of square butt welding of 5 to 8 mm thick plates without edge preparation for full penetration welds to meet ASME code requ...
ABSTRACT
A METHOD OF ELIMINATION OF MINIMUM LENGTH REQUIRED FOR HOLDING OF ECONOMIZER TUBE FOR BENDING IN MANUFACTURING OF ECONOMIZER COILS OF A HIGH PRESSURE STEAM GENERATOR
The invention relates to the manufacturing process of the economizer coils in the high pressure steam generators. In the present method a st...
A method for fabrication of the abrasive grains comprises the steps of: -preparing of slurry by mixing of Aluminum oxide (Al2O3), Yttria stabilized (Y2O3)-zirconium oxide (ZrO2) or [YSZ] and titanium diboride (TiB2) in DI water alongwith binder and dispersants (please let us known the what are used in binder and dis...
This invention relates to a setup for milling operation of root and shroud of steam turbine blades comprising of a blade (D) to be machined placed between blade root (3) and blade shroud (4) resting on front pad (2), wherein said blade root is connected to the root locator (1), which is secured to horizontal milling...
The present invention relates to proposes a method for developing the alternate methodology via metallography comprising of collecting and banking of different grades of copper samples having varied range of oxygen content; testing Oxygen content by spectroscopy; Collecting and banking of samples of oxygen content o...
ABSTRACT
ONLINE SYSTEM FOR MONITORING THE HEALTHINESS OF SPRING LOAD HANGERS IN HIGH PRESSURE STEAM GENERATORS
The invention relates a system for monitoring the healthiness of the spring load hangers in high pressure steam generators comprising: the hot working loads (3), supporting structures (2), and spring supp...
A magnetic coil apparatus for producing uniform magnetic field intensity for an electric or electronic machine that comprises of an inner coil pair (202, 203) wound on a non-magnetic former, an outer coil pair (202, 204) wound on the non-magnetic former, wherein the outer coil pair and the inner coil pair are positi...
The stator cores of various rotating electrical machines are cooled by forced air circulation. Stator core of turbo alternator experiences various types of losses like Hystersis and eddy current losses, which in turn heat the stator core portion. Heating of this core will reduce the operational limit of the turbo al...
HYBRID THERMAL INSULATION FOR HOT SURFACES
The present subject matter relates to a hybrid thermal insulation for hot flat and cylindrical surfaces, which is a combination of mineral wool and silica aerogel arranged such that the bottom most layer in contact with the hot surface and the top most layer in contact w...
The invention relates to an automatic system (100) for pre-heating of tubes (9) prior to butt welding in a Straight Tube Butt welding (SBTW) machine is disclosed. The system (100) includes a welding torch (1) for performing a welding operation; a clamp (2), proximal to the welding torch (1), for securing a preheatin...
A static field excitation equipment (200) for a synchronous machine (300) with field winding (8) including flux compensating magnetic amplifier (100) comprising excitation transformer (6), thyristor bridge (7), field circuit breaker (Q1), auxiliary breakers (Q 34, Q 35, Q 37), rotor over voltage protector relay (OVP...
The present invention relates to an improved gas metal welding arc (GMAW) process to weld super 304 H stainless steel or its equivalent tubes, the improvement is characterized in that a groove angle is formed between the joinable tubes, in that the welding arc is struck between the tubes and a filler wire carrying t...
Abstract
A METHOD OF ROTOR BALANCING FOR TURBO GENERATOR ROTOR
The subject matter disclosed herein relates to a method for balancing a rotor (101) of a turbo generator. An unbalance location is determined on the rotor and unbalance response of the rotor (101) is computed by rotor dynamic analysis. Further, balanci...
A modified cable termination module that comprises collet tube with multilam joint, a connector to couple with a bus plate in which the modified size 2 and size 3 bushing is moulded to form a compact design.
A plug-in type modular arrangement for a surge arrestor to be connected to voltage transformer (PT) of a medium voltage gas insulated switchgear (GIS), characterized by, a single mass molded insulating body maintaining the system potential voltage.
The inventions relates to an apparatus and a method for preventing failure of MF (Medium Frequency) transformer due to loose connection at its Primary side terminals in incremental pipe bending used for bending of pipes. The incremental pipe bending machine operates on the principle of Magnetic Induction. For gettin...
In bell tank transformers high eddy currents are generated in bottom tank due to lower clearances from the winding bottom ends, these currents try to expand and link with the eddy currents on top tank through the interface joint, leading to high concentration of current in the bolts which link the flanges and subseq...
The invention relates to a method of generating an optimized tube nest layout for compact single pass condenser to minimize overall steam pressure drop through achieving uniform steam flow distribution and equalized pressure drop across different tube bundles from all directions around the tube nest. The steam conde...
A monitoring system (100) for a gas insulated substation in a modular configuration, comprising digital input and output modules (103), isolator modules (104), current transformer & potential transformer (CTPT) modules (106), filter modules (105), processor module (101), analog add-on modules (102) in addition to un...
PROCESS OF INTERCONNECTION OF VERTICAL HANGER TUBE TO HORIZONTAL HANGER TUBE THROUGH AUTOMATED WELDING METHODS IN ECONOMISER UPPER COIL ASSEMBLY
The subject matter disclosed herein relates to relates to method of automating the manual butt welding in two different stages. In first stage, the welding of vertical h...
SWINGING BAFFLE SYSTEM BETWEEN ADJACENT MOVING HEADERS TO ARREST GAS BYPASS INSIDE HEAT RECOVERY STEAM GENERATOR
The present subject matter relates to a Heat recovery steam generators (HRSG) to arrest gas bypass during differential expansion between two headers (1, 2). The two headers (1, 2) are positioned adjacent...
The invention relates to the method of manufacturing of seamless steel tubes. More particularly the invention relates to method of guiding the mandrel thrust block (1) with plug in the piercing process. The invention proposes a roller type guide wheel for guiding the mandrel thrust block (1) during the back and fort...
Abstract
A NEW APPROACH FOR REPAIR WELDING OF COPPER USED IN PIPE BENDING BY HIGH FREQUENCY GAS TUNGSTEN ARC WELDING PROCESS
The subject matter disclosed herein relates to a method (400) for repairing welding of copper used in pipe bending by high frequency gas tungsten arc welding. The method entails a localize...
The invention relates to an improved support insulation for three phase or single phase gas insulated bus ducts, the gas insulated bus duct comprises at least one bus bar or high voltage conductor (01,15) having a plurality of gas port covers (05,10,18) and insulated from a grounded metallic enclosure (02,17) filled...
The control system for an automated vertical climbing robot comprises: a mobile unit (1) having sensors (4) for real-time sensing of multiple parameters, a transmitter (3) for transmitting signals received from the plurality of sensors (4), an encoder (5) for sensing position of the automated robot, a plurality of m...
The invention relates to design and fabrication of Equaliser Beam to verity the Structural integrity of Structural attachment and Evener Beam under Static load and dynamic load of 320Ton using multiple overhead crane. After load testing, the Struct6ural attachment will be integrated with equipment by full penetratio...
The invention relates to the possible to recover heat from flue gas of thermal power plants firing low sulphurcontaining fossil fuelswith flue gas leaving air heater at temperatures above 100 °C. Multiple options of using a low pressure heat exchanger to recover waste heat from flue gas and pre heat boiler feed wate...
Steam Generators (SG) are crucial components of Nuclear Power Plant (NPP), and demand especially high design and manufacturing capability in addition to safety and reliability. The Secondary side attachment (SSA) is a component used for raising, lowering, or rotating the Steam Generator and supports the entire weigh...
The invention relates to a rotor sleeve for superconducting pole coils of convection cooled high temperature synchronous motor, comprising :a rotor sleeve (101);a plurality of tapped holes (103, 104) on each side of the rotor sleeve (101) for fastening drive End and Non Drive End torque tubes;a plurality of Counter ...
A Test Jig for Analog input Module is invented to provide an intelligent system that can do the functional test of analog input module in a fully automatic method without any manual intervention.
The Intelligent test jig is developed using various hardware and software components. The hardware comprises of a Microc...
This invention is directed to a portable device to apply conductor paste on thin film sample employed for devising high efficiency silicon solar cells. The conductor paste forming pad can be applied in a required pattern uniformly such that the electrical conductivity parameters of thin films can be studied accurate...
The invention is related to method for high speed keyhole plasma arc welding of thick plates/pipes. In the present invention, a suitable method/procedure has been designed by optimizing the starting current to ensure proper closing of the keyhole in high density materials like nickel based superalloys, molybdenum & ...
Disclosed is a novel groove torch design used in gas shielded arc welding processes for accommodating narrow weld groove design having groove width less than 10mm and for welding thick wall section of beyond 25mm. Further, the narrow groove torch includes a narrowed groove nozzle (11) for feeding the shielding gas t...
A DEVICE FOR SALVAGING SEALING RUBBERS USED IN HYDRAULIC TESTING OF HIGH PRESSURE TURBINES OUTER CASINGS AND METHOD TO USE THEREOF
Loosely fastening the semi-circular clamping ring portion 1, 2 of the device through fastening members 4, 5 and the device in this condition is lifted through I-bolts threadedly connect...
According to the present invention, a tube bundle insertion fixture for shell and tube type heat exchangers is provided wherein a tube bundle(75% weight of heater) is stationary and kept in horizontal position. The shell(15 % weight of heater) is clamped on the fixture and which is aligned with tube bundle. Slowly t...
A method of connection an assembly for connection for liquid cooled stator winding of electrical machines comprising Connector (1), Nipple (2), Insulated liquid hose (3), Fixing bolt (4), Characterized by accommodation of both electrical and cooling fluid connection.
“A method for controlling weld distortion and weld cracking in repair welding of casings of steam turbines”.
This invention relates to a method for controlling weld distortion and weld cracking in repair welding of casings of steam turbines. The procedure is applicable for two cases the first one is a situation w...
Title: An automatic apparatus for hydro testing of valves.
The present invention relates to an automatic apparatus for hydro testing of valves.
For hydro testing of Different sizes in the range of 2” to 38” with 150, 300, 600, 900, 1500, 3000 class of Globe, Gate & Non Return style valves hydro test bench is us...
The invention relates to High efficiency low flow shrouded 2D impeller of centrifugal compressor, the 2D-impeller comprising; at least a disk and a shroud, and a plurality of blades disposed between the disk and the shroud and substantially equidistantly in a circumferential irection to define the flow passage forme...
This invention describes a fabrication process for producingSCR (selective catalytic reduction for de-NOx) plate-type catalyst structures by combining ‘Roller-assisted Casting Technique’ and “Uni-axial Pressing technique”respectively.As per the process, the identified base metal wire mesh material isfirst passedthro...
A method for the production of Urea from high ash coal, said process comprises the steps of converting high ash Indian coal into synthesis gas or coal gas under oxy blown gasification conditions in a gasifier (15), said coal gas along with particulates being further driven to cyclone(19) where particulates are separ...
The invention relates to a process for safe manufacturing of improved slot wedges disposed in stators of large size Turbo-Generator; comprising the steps of :cutting a blank 1 for making a fixture F; providing an insertion key 9 at the bottom of the in blank of the 1 for locking into the blank 1 T-slot of milling ma...
The present invention relates to a device for measuring of cooling water temperature and evaluation of Real-Time tube fouling in a surface condenser. The device consists of a sensor support (1) inserted into the outlet ends of the condenser tubes (6). A resistance temperature detector (RTD) is disposed in the said s...
In pulverized coal fired utility boilers, mixture of pulverized coal and primary air from mills are transferred through steel pipes. As each mill is serving all corners of a tangential fired boiler, the pipe routing results in differential coal pipe travel lengths. To nullify the effect due to differential coal pipe...
“A clamping fixture assembly for making a flexible terminal connection”
A clamping fixture assembly for making a flexible terminal connection, the clamping fixture assembly includes a clamping assembly (3), the clamping assembly (3) having a base plate (4), a lower plate (5), and a support plate (6); a height block...
Axial compressors for process applications handles high volume flow rates and compresses to a moderate discharge pressure range of 6 to 7 bar. In general, axial compressors are driven by steam turbine or motor and axial compressor needs to have either radial entry or radial discharge for accommodating the drive turb...
To overcome this issue a compact Thrust and Guide bearing arrangement with integrated bracket has been developed which is suitable for taking high axial thrust loads. The oil tank in which the bearing components are housed is made integral with the bracket. The oil tank is welded to four I beam assemblies. The I bea...
NON-STICK NANOSTRUCTURED COATING FOR HEAT TRANSFER SURFACES USING HIGH VELOCITY OXY FUEL TECHNIQUE (HVOF)
The invention relates a method of coating of nano-crystalline material on to the steel and alloy steel material to mitigate the ash deposition faced in the boilers. The method of the coating on the grit blasted...
ROTOR STRUCUTRE FOR HIGH TEMPERATURE SUPERCONDUCTING (HTS) SYNCHRONOUS MOTOR
The present subject matter relates to a rotor strucutre (25) for the HTS motor. the rotor (25) consists of HTS made field coils (4) instead of normal copper coils. The rotor HTS coils (4) is cooled with Cryogenic temperature Helium gas (up...
A new bracket arrangement for an inlet guide vane (IGV) control ring (45) system of a gas turbine that comprises: - a turbine base (41) on which an actuator piston (44) is mounted; - a linkage (49) coupled to the actuator piston (44); - a control ring (45) affixed to the linkage (49) to form a 3’0 clock position fro...
The present invention relates to high alumina ceramic Insulator manufacturing process for Insulator round for IGBT (Insulated Gate Bipolar Transistors) traction converter in Locomotive and relative fields. Alumina ceramic where Al2O3 content is more than 90 percent and remaining of other special additives. The raw m...
A device for marking radius on the pipe surface or an uneven surface comprising a V-Block (01) which is mounted on surface to be marked and is locked either by using a permanent magnet or an electromagnet and for facilitating the centering, a stem (07) and sleeve (02) is used. A sliding scale Assembly (05) that aids...
A method for selective catalytic reduction (SCR) catalyst plates for modifying the surface characteristics of SCR plates and tailoring the composition of the catalyst for higher nitrogen oxides conversion comprises the steps of: a. preparation of SCR plates by rolling or casting of SCR catalyst on the stainless stee...
A replaceable assembly for surface milling at top and bottom end faces of turbine blade in horizontal milling machine for simultaneous height and angular adjustment, the replaceable assembly includes a base block (100); a lower holder block (200); a rotating part (300) for angle adjustment; an upper clamp (400) for ...
A novel design of new panel with AC VFD Drive and Motor for Bearing Test Rig is shown in Fig.5 have VFD Panel (1), Main Motor (2) and Mechanical Load Cell and rotating system (3). A new wiring diagram is designed as given in drawings Fig.1, Fig.2, Fig.3 and Fig.4. After design of schematic diagram, the panel in Fig....
A device for elevated load gyration of a suspended load 20 configured to be attached to the elevated load structure 20 and a method of to use such device is provided. The said means includes an upper 10, lower bracket 30 and a support member 50 configured to be attached to the load structure 20 in a way that the upp...
The bulk material weighing and metering conveyor of the endless belt type apparatus requires to be calibrated at specific speed of the drive motor for deriving the system parameters.
The present invention aims at improving the accuracy of the calibration parameter computed by performing calibration at specific rec...
The present subject matter relates to a method for evaluatings arc stability using Fourier transform comprising the steps of: accessing quantum of stability associated with welding arc during a welding process; recording the welding arc as a function of time with respect to welding voltage and current by using Hall ...
The invention relates to a device to hold, clamp, rotate & revolve a valve body continuously in 360 degree along the vertical and horizontal axis, the device consisting of an adjustable base table (1) operable by a threaded screw (2), and having a circular slot (3) for placing a thrust bearing (5); a valve body rot...
A welding method of bell comprises the steps of: i) holding the bell in fixture depending upon the geometry of the casting; ii) preheating the bells by keeping it in the furnace at certain temperature for a suitable soaking time along with filler wire depending on the chemistry of the bells; iii) after preheating, t...
A novel axial fan (1) characterized by, increasing diameter of both hub (2) and shroud (3), not being increased proportionally, along flow path, resulting S-shaped meridonal section.
Fig.1
A method of chemical cleaning for reverse osmosis (RO) membrane comprises the steps of : i) preparing of chemical cleaning (CC) solution in chemical cleaning tank (7) at a preferred temperature; ii) re-circulation by RO clean in place feed pump (8) and addition of NaOH until an optimum pH is reached; iii) transfer o...
The invention on the Liquid cooled Stator for Electric Machine comprises of a Stator frame and two End shields for fixing to the ends of the Stator frame. The Stator frame is designed with built-in multiple cooling segments distributed circumferentially. These cooling segments are present axially throughout the leng...
The present invention relates to the device to exchange the coolant media in high temperature superconducting (HTSC) rotating machines. The field coils of HTSC rotating machines are made with high temperature superconducting (HTSC) tape. These field coils are accommodated in rotating vessels called as housings. The ...
The invention provides an improved method for heating CO2 gas with improved heating element (5) for straight tube butt welding. CO2 gas from the CO2 gas cylinder (12) is passed inside a heating element (5) through an inlet hole (3). The heating element has a spiral path so that CO2 gas remains in contact with the he...
The invention relates to a method and means for concurrent machining of plurality of thrust bearing pad comprising of a stepped base plate 20 fixed on machine bed through rectangular slots 21 and provisions for rigidly holding the thrust bearing pad at its position during machining by applying a downward pressing fo...
“An apparatus for induction pressure welding of butt joints in pipes of thermal power plants”.
The invention generally relates to pipe to pipe joining process and device without slag inclusion during welding. The present invention particularly relates to an apparatus for induction pressure welding of butt joints in...
DEVICE AND METHOD FOR CONCURRENT MACHINING OF
VENTILATION FILLERS IN DYNAMOELECTRIC MACHINE ROTOR
CONDUCTORS
Described herein is device and method for obtaining great accuracy in
concurrent machining of ventilation fillers in dynamoelectric machine rotor
conductors. The device comprising a holder plate (60) hav...
This invention relates to reinforcing means to prevent local shearing of collecting electrode for electrostatic precipitator comprising a reinforcement plate (100) secured to collecting electrode (101) towards the top half of opening thereof, wherein a wire (102) is disposed between the electrode and reinforcement, ...
Described herein is apparatus and method for obtaining great accuracy in min manufacturing of slot tightening and ventilation component in the dynamoelectric machine. The specially designed method, as described in the present disclosure, through which not only it is desired to have to save significant time and with ...
The present invention describes a development of liquid and gaseous fuel fired device assembly where it can fire a gaseous fuel or liquid fuel independently or in combination to achieve the same thermal output. The liquid and gaseous fuel fired device (D) consists of an innermost liquid fuel gun (1), a primary air s...
The invention relates to an apparatus in a chamfering machine (1) for chamfering elbows used for connecting panels of steam generator having a tool holder assembly (5) along with a chamfering tool, the apparatus includes one each length-shortened top support clamp (7) and bottom support clamp (14) to hold a short ar...
Title of Invention: A DEVICE AND METHOD FOR CLEARING BLOCKAGES USING CAVITY MACHINING.
A device (10) according to the present invention is disclosed. The device (10) is designed particularly to hold graphite tool/electrode. The device (10) comprises of mainly 4 components: a mounting plate (20), an assembly plate (...
A soot blowing system (12A, 12B &12C) for plate type denitrification catalyst (11), the soot blowing system (12A, 12B &12C) being configured for cleaning of the plate type denitrification catalyst (11) in coal fired power plants, the soot blowing system (12A, 12B &12C) includes a series of nozzles (13), the nozzles ...
This invention is directed to a device for measurement of hogging deflection of sample comprising a base (1) supporting a pole (2) mounted with a frame (3) at free end thereof, wherein the frame holds micrometer (M) for measurement of hogging deflection.
It is associated with the following advantageous features:-...
The present invention is for improving the method of insertion/withdrawal of rotor from the generator. The method consists of first disengaging the rotor on the turbine end. The slide plate is then inserted carefully after a thin film of grease being applied on top of the sliding plate which is then wrapped in sheet...
Disclosed is a novel switch for gas insulated substation of combined disconnector switch (DS) and earthing switch (ES) system. The Integrated gas insulated switch propose unique design for disconnector and earthing switch contact system; a fixed contact shield (11) and a fixed arcing contact (17) of DS; a fixed arci...
Title of invention: A method for on-site sensitivity verification for ultra high frequency (UHF) sensors in GIS
A method for on-site sensitivity verification for ultra high frequency (UHF) sensors in GIS comprising the steps of injecting of external PD pulse using INJ1 [09] and measuring the PD magnitude at the nea...
The present invention describes an air gap measuring device and its arrangement in hydro generator/ motor. The air gap measuring device comprises a measuring strip female part (101) and a measuring strip male part (102). Inner surface of the measuring strip female part (101) is equal to rotor outer diameter (301) an...
Described herein is a torque tube (100) with anchored radiation shield (204) for a high temperature superconducting (HTS) synchronous machine rotor. The torque tube (100) includes a cylindrical body (102); a cryostat side torque tube flange (104) formed at cryostat side end of the cylindrical body (102); a shaft sid...
Described herein is a bay control unit (BCU) (100). The BCU (100) includes one or more sensing modules (104, 108, 112, 114) to sense field input data, and a processor module (102). The processor module (102) is having a data acquisition module (202) for receiving the sensed field input data from the one or more sens...
A shaft current monitoring system for electrical machines in which base board (106) along with processor board is provided that comprises:- analog input and output interface circuit; - digital output interface circuit; - at least a communication port; - the power conditioning circuit to provide different DC voltages...
A Welding Consumable Wire Feed Guide Minimizing Material Damage During Continuous Welding Operations
The invention relates to single and multi-torch welding consumable wire feed guide for SAW and FCAW process in continuous welding operations. Earlier, the wire feed guide which was made of copper connects the machine and copper contact tip. This resulted in significant damage to the whole assembly owing to high heat...
An LP exhaust hood spray system (100) including a piping routed inside LP Exhaust Casing, the piping having a pipe (1); a Half round Pipe Assembly-Upper (2) and a Half Round Pipe Assembly-Lower (3) coupled to the pipe (1), wherein, the Half round Pipe Assembly-Upper (2) and the Half Round Pipe Assembly-Lower (3) def...
Time of Flight Diffraction (TOFD) technique is an advanced ultrasonic testing technique where defects present in components are detected by the principle of diffraction. It differs from conventional ultrasonic testing which uses the principle of reflection. Time of flight probes is usually highly damped to have shor...
The invention relates to a self-averaging square multi-port pitot airflow measuring device has been developed through Computational Fluid Dynamic (CFD). In order to cover the entire cross section of flow, optimised numbers of total and static pressure ports equally distributed across the flow cross section have been...
A modular mounting arrangement (04) of moisture absorbents (03), suitable to be mounted on the main body (06) of end cover (05) for all the modules of gas insulated substation (GIS) bay comprising, flange (07B), main dish (07A), perforated dish (11), hatch/cover (09), pouch (08) to hold the moisture absorbents (03),...
The invention relates to embodiments of the invention relate to a system for online monitoring and estimation of coal particle size distribution after they get pulverized by pulverizers and before they enter into furnace area to get burned to release heat energy. The invention describes a system of coal sampling, sa...
A die set and core box set for manufacturing aluminum alloy blower for turbo generator exciter. The die set and core box set including a die having a top half and a bottom half; a sand core placed inside the top half and the bottom half of the die, wherein the top half and the bottom half of the die along with the s...
The invention relates to an universal device to standardize root and shroud milling operation of steam turbine blade comprising : at least two base blocks (1); at least two resting Pads (2); a plurality of resting pad coupling bolts (3); at least two wedges (4); a plurality of height adjusting Bolts (5) in the base ...
The invention relates to a method of end preparation of header pipes of super Heaters and Re-Heaters and welding with plug-type end cover and finally machining of additional thickness of both components to maintain design dimension. The method comprising the following steps. A step of 2mm is provided in addition to ...
This present invention relates to Semi Automation of Hydro End Cover Plate with pipe Welding in Submerged Arc Welding (SAW) Machine in which the Welding fixture is designed to avoid manual welding by SMAW and to reduce the time taken to complete the welding. Hydro end cover plates are welded at the end of the circui...
This invention is directed to uniform load distribution device for rigid clamping of cutter on spindle of horizontal machining center comprising a guide ring (1) mounted on machine spindle (S) and supports a clamping ring (2), which transmits torque/cutting force to cutter (200) accommodated in spindle cone (4), whe...
This invention describes a design of multi-channel static mixer system for De-NOx application to ensure uniform & homogenous mixing of flue gas with anhydrous ammonia for complete conversion of NOx to N2 and water vapour. This static mixer consists of angled cross blades, channel blade connector, angled cross blades...
The innovative design of rotor jacking system for bulb generators is used for supporting complete rotating assembly at two locations during erection and maintenance. The arrangement is very robust and transmits the standstill loading to foundation. The system comprises of base plate (2) & (12), rib (3) & (13), pipe ...
The present invention discloses a mechanically actuated device (D) disposed in a bypass line for emergency flow of water to the steam generator when the high pressure heater is under maintenance. The bypass line collects the feed water from the upstream of the high pressure heaters and releases water to the downstre...
The invention relates to contact tip and its holder for Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW) process through Straight Tube Butt Welding Machine. Earlier, the contact tip and contact tip holder cum shielding gas facilitator were connected via press and rotate fit with each other. This resu...
The invention relates to a device for continuous abrasive cleaning of rust and grease on the flat fins (6) used in the water wall panels of the steam generators before being fed into the Panel Processing Machine (29). This is achieved by the abrasive cleaning using the buffing wheel (5) arrangement on all the sides ...
Disclosed is a device for performance measurement device for a single PV module (2) at standard test conditions (STC), the device comprising: a sensor unit (1) operatively interfaced with a PV module (2) for measuring parameters indicative of temperature, irradiance, current and voltage of the PV module (2) in real-...
The present invention claims a CLC based steam generation scheme for carbonaceous solid fuel for gaseous fuels to produce steam and/ or power and/ or syngas, said scheme comprising of a SFR (1) for carrying out solid fuel (7) and a metal oxide (18); a syngas reactor (3); a metal oxide regeneration reactor (2); cyclo...
Disclosed is a pole shroud (1) for encapsulating one or more poles(6,7,8) supported on a support structure attached to a moving portion (5) of switchgears, the pole shroud (1) comprising: a shroud body (2) opened at one end by collar joint (3), said collar joint (3) shaped such that to be mounted removably and fitti...
This invention relates to manually operable four-point bend fixture for residual stress measurement verification. In this study, the technology of XRD is made use for measuring residual stresses in a small rectangular strip shaped sample. The measurement of residual stress using XRD was driven from the limitations o...
The invention generally relates to machine welding cable connector. The present invention is particularly relates welding machine welding cable connector for Tungsten Inert Gas (TIG) welding torch and electrode holder cable for Shielded Manual Arc Welding (SMAW) process. During welding due to the heat generation exi...
A method for manufacturing seal bands required for back pass panels of high pressure and high temperature steam generator comprises the steps of : i) calculating of the width for making two seal bands; ii) fixing of the length as per the pitch requirement and marking of the late for bending at a specific distance fr...
Described herein is a vacuum sleeve (100) for a rotating cryostat (402) of a high temperature superconducting (HTS) synchronous machine (306). The vacuum sleeve (100) includes a cylindrical body (102), a drive end side flange (104) formed with a groove (106) at drive end side of the cylindrical body (102), and a non...
The device for loading, transporting and unloading liquid containers of cylindrical shape consists of two L-shaped plates (13) formed by welding two channels. The L-shaped plates are inserted underneath the bottom of work piece (19) by tilting the work piece 5 degrees to the horizontal. L-shaped plates are welded to...
A dual power input powered moving vehicle that includes means of power supply; - atleast a Photovoltaic (1) coupled to a solar charge control (3); - atleast a power storage (2); - a supply unit (4) coupled to the power storage (2) by a double pole single throw switch (5); - a DC motor drive unit (6) for driving seri...
A mask utilized for shadowing certain area of the dielectric stack in the rear side of crystalline silicon wafer during solar cell fabrication is made up of metals including stainless steel and nickel/ceramic or silicon wafer.
Further a method is provided for depositing dielectric stack by a mask on the rear side ...
Described herein is device and method for caulking of fillers in a CNC milled slot recess (32) of a dynamoelectric machine, i.e., rotor conductors by inserting and holding position tools (37, 37’) in gas flow channels (29’) and perpendicularly adjacent to consecutive CNC milled slot recess (32) using a chamfer (36) ...
The present disclosure relates to Battery Assisted Passive (BAP) Radio Frequency Identification (RFID) tag [8, 9] working in Ultra High Frequency (UHF) range. The BAP-RFID tag [8, 9] includes a printed circuit board (PCB) mounted antenna [1]; RFID integrated circuit (IC) [2]; low-power operational amplifier [3] used...
The present disclosure relates to a method for protecting various hydro-turbine underwater components from acidic water corrosion. The method includes applying epoxy-based polymer coating on hydro-turbine underwater components affected due to the acidic water corrosion.
DEVICE FOR MEASURING AN ANGLE OF MULTIPLANE BEND IN A WORKPIECE
Described herein is a device (1) for measuring an angle of multiplane bend in a workpiece (28). The device includes a V-shaped block (2), at its central portion, assembled with a wooden handle (5) using a wooden handle screw (6), where the wooden ha...
ABSTRACT
A method of improving operation of a current transformer (CT) under transit conditions by controlling remanent flux in which an air gap is introduced into a magnetic circuit of the CT.
ABSTRACT
A novel wafer carrier for rapid heating of silicon wafer is made up of aluminum material with varying cross section thickness such as 2 mm beneath the wafer holding slots as lower thickness and 9 mm elsewhere, for quick heating of silicon wafer.
The invention relates to a method to machine a large size twisted impeller blade with varied aerofoil contours on both concave and convex sides on a CNC machine. Two blade holding fixtures (F1, F2) are provided to machine concave side (C1) and convex side (C2) of the blade (B). The vertical supporting members are ma...
This invention relates to development of 100 MVA 400/132/33 kV auto transformer with voltage variation on 132 kV (IV) side, with ±10% tapping range and with special impedances followed for 100 MVA, 400 kV class, 3-phase, Auto Transformer. Tapping winding is provided on 132 kV IV terminal of the auto transformer in a...
Accordingly, there is provided an interface system shall be of two parts and first one is an interface module between existing gas insulated double bus (bus design 1) and new bus bar (bus design 2) and second one is an interface between new bus bar (Bus design 2) and new gas insulated switchgear (GIS design 2). A no...
Multistage axial compressor having compressor with axial entry and radial discharge comprising of inner casing 3, outer casing 2, multiple rows with plurality of stationary blades 5 having predefined spacing and stagger angle arranged in circumferential grove in horizontal spit inner casing without axial overlapping...
A method for preparing of composite carbon nanotube (CNT) comprises the steps of preparation of array of carbon nanotube (CNT) in the form of an inter-connected web (5, 5a); employing true-twist spinning process with a relatively less distance between the carbon nanotube (CNT) web and the other end (between 5 and 7)...
This invention relates to a pre-heating system for stationary push through/moving tube type panel welding machine comprising liquefied petroleum gas bullet common distribution line for supplying liquefied petroleum gas (8), which flows through flashback arrester (6) connected thereto, wherein the arrester (6) is pro...
According to the invention, a method of controlling both the longitudinal and side bow distortions of flat fin welded tubular panel is disclosed. The tubular panel consists of alternately placed tubes and fins for the designed length. After fit-up of panel, tack welds are firstly placed along the centerline of the p...
The invention relates to manufacturing of Connecting Sphere for High Pressure High Temperature Steam Generators with Proposed Edge Preparation Style for Cirseam Butt Welding. In this invention, the edge preparation style of HSDE are Proposed in such a way that inside welding of the connecting sphere is eliminated. T...
The invention relates to an apparatus for cutting excess material of stubs of headers in high pressure boilers comprising a band saw blade (1) placed between two rollers (2), each of which is held by a guide bar (3), wherein a jaw (4) is provided so as to place the blade according to the stub diameter and space betw...
The invention relates to a high pressure high temperature steam generator link and manufacturing thereof. Thus, the invention relates to manufacturing of Links with novel process of Incremental bending in place of Elbow forming. The incremental bending operation has replaced the more time and resource consuming elbo...
This invention relates to a hybrid fabric–epoxy composite laminate for use as an electrically insulating material, said composite comprising a hybrid Carbon-Basalt Fabric and an epoxy resin and having better thermal conductivity and enhanced capacitance value.
The erosion sheets are envisaged in the design of the boiler in order to avoid erosion of the tubes which get eroded owing to continuous ash impingement. For this a 2.5mm stainless steel sheet is to be welded in the areas which get affected, for which the bending of these sheets has to be under taken. The present in...
Disclosed is a liquid cooled Stator frame (100) with a novel cooling conduit for a rotating electrical machine. The stator frame (100) comprises of: a substantially cylindrical shaped body section having at least six hermetically in-built cooling segments (203 to 208) located circumferentially at equidistant having ...
This invention relates to An oil seal to prevent oil leakage in bearing lube oil systems employed in rotating shaft trains, comprising an arrangement configured with a projected fin assembled on the rotor forming part of a seal to arrest lube oil leakage, the said seal being of a composite material blended with nano...
Disclosed is a self-reliant and efficient method of startup of coal to methanol plant comprising the sequence : i) generation, separation and storage of CO2 under airblown mode of fluidized gasifier, ii) generation of syngas under airblown mode of fluidized gasifier utilized for water gas shift reactor and reduction...
Novel transportation methodology for shipment of large vertical motors in semi-assembled condition using dummy frame to reduce assembly and dismantling time of motor during erection at site. The invention is employed for large rating vertical motors whose total weight is high and capacity of crane available at site ...
The present invention relates to panel welding torch assembly with the development of a gas nozzle, contact tips and contact tip holder cum diffuser in such a way to eliminate defects due to the shielding gas flow with turbulence. Gas nozzle is critical to provide proper shielding. The panel defects during welding a...
The present invention relates to vibration absorbing grinding wheel redresser for dressing of a grinding wheel while operating at approximately its normal speed of operation by means of stationary and rigidly held dressing tool (10) whereby the unit 10 stress in the minutely small local areas of support of the fine ...
The present subject matter relates to a drive end (DE) and non-drive end (NDE) shafts arrangement for high temperature superconducting (HTS) synchronous machine. The arrangement (600) comprises NDE and DE shafts (601, 602) having counter bore holes for fastening a rotating cryostat (615). The shafts (601, 602) demon...
Axial Type Flat Disc Slip Rings Arrangement For High Temperature Superconducting Synchronous Machine
The invention relates to the Described herein is a system for high temperature superconducting (HTS) synchronous machine comprises a positive excitation axial type flat disc slip ring (506) and a negative excitation axial type flat disc slip ring (508) configured via fastening means (502) to a non-drive end (NDE) sh...
The present invention relates to a method of manufacturing low pressure turbine intermediate ring from single rolled plates by rolling two structural steel half ring (lower half & upper half) and clamping parting plane used to clamp the two half rings joint clamps (3);preparing a weld groove to make the hardened fac...
The invention relates to a fixture for lapping gate used in high pressure valves in oil wells. Full Bore Valves which are used 5 for flow control in Oil field involves high pressure. High surface finish is required for leak proof operation of the Full bore valve. Use of lapping machine involves lapping powder which ...
“A method to evaluate quality of PWHT of welds in tubular panels made of Cr-Mo steel in once through supercritical boiler”. 5
This invention describes a method for evaluating the PWHT quality of butt welds present in tubular panels of once through supercritical boiler made of ‘Cr-Mo’ steel, manufactured at shop and...
ABSTRACT
A SINGLE BOARD COMMON CONTROL HARDWARE PLATFORM FOR USE IN VARIETY OF APPLICATIONS
The present disclosure relates to a single board common control hardware platform for use in variety of applications including bidirectional static and rotary power supply management unit, electric propulsion system, inve...
The invention relates to a hand held device and method for abrading surfaces through selective triturating. When a surface has been grooved or otherwise indented, the damaged surface can be built up, which must be ground back to the original configuration.
A hand held device (10) for abrading surfaces through se...
The present invention relates to a process for applying a nano-composite hydrophobic coating on turbine blades to enhance the resistance to droplet impact erosion. A rough surface of the turbine blades is first made with grit-blasting. Then a nano-composite hydrophobic coating of hydrophobic epoxy matrix and alumina...
The invention relates to a device and method for feeding/welding terminal bend tubes in furnace side upper water wall panels used in High pressure steam generators.
In the high pressure steam generators, the water wall panels comprise of 10 straight, gang bend and terminal bend panels (1). In the terminal bend pane...
This invention relates to twin flow cooling device for ventilating compact induction motors comprising a twin curved ducts (1,2) integrated to each other, each of which is connected to a flap (3, 4) constituting an assembly, which is secured to rotor/partition flange.
The invention directs the air onto the heat s...
The present subject matter relates to a process for butt welding of sheet metal plates by fusion welding processes (Shielded/Manual metal Arc Welding (SMAW/MMAW), Gas Metal Arc Welding (GMAW or MIG / MAG) to fabricate components as per ASME code. The process comprising the steps of: providing a first and a second sh...
An improved shroud for covering hook fit damage area of turbine casing in axial flow gas turbine engine
This invention relates an improved shroud (100) for covering hook fit damage area of turbine casing in axial flow gas turbine engine comprising of a shroud segment integrated to a cover so as to cover damaged ...
The invention relates to disclosed is a method for controlling and monitoring the operation of proportional valve in a HPBP system, the method comprising: receiving a plurality of position feedback signal from a position feedback transmitter (1); generating a reference signal from the module; providing the position ...
ABSTRACT
An arrangement for guiding vanes of Francis/Kaplan turbine in a model assembly comprising, special flat (1), guide vane with flat mating faces (2) on trunnion, screws (4) for connecting special flat with guide vane, guide vane lever (3) wherein, guide vane lever (3) and guide vane are positively locked wit...
Disclosed is a portable device for measuring and storing the solar insolation, temperature and power of a module made of a passivated emitter and rear contact (PERC) solar cell (7), said device comprising a PERC mono crystalline silicon solar cell (7); a portable direct current voltmeter(2), an portable direct curre...
De super heaters which includes steam inlet connection comprising of U bend support plate strips (6) at First horizontal plane before bend, second horizontal plane after bend, Inclination to horizontal plane perpendicular to the vessel axis wherein overhung strips (6) are welded by together by one no (7) of strip on...
The present invention relates to a process for dismantling a high-speed integrated motor spindle (hsm) spindle. During dismantling of the spindle (7), it is seen that front chuck cannot be opened without holding the rear shaft of the spindle. Therefore, the structure/dimensions of the rear side locking tools were de...
Described herein is a method for controlling water pressure for harnessing in a water-cooled transformer (102). The method comprises ascertaining a desired water pressure with which the water is to be supplied to a water inlet (110) of a water cooler (108) coupled to the power and rectifier transformer (102); and st...
Described herein is a fixture device to standardize root and tenon milling operation of steam turbine blades (10). The fixture device comprising a base plate (1); a pair of lateral columns (2) mounted vertically along their length on upper surface of the base plate (1) in such a way that their longitudinal bases lie...
A device for deburring of drilled holes on the pipe and plates comprising of tool holder (01) used for drilling in conventional drilling machine and spring tensioner housing (01) which is mounted inside the tool holder. Spring load adjuster pin (01) is used to adjust the tension in the spring. By adjusting the tensi...
Disclosed is an apparatus for single side etching/polishing the large area of Si wafer protecting one face in a chemical bath comprising: a Si wafer (1), a silicone sheet (2), a vacuum channel (3), a venturi pump, six guide pins (6) and a Polytetrafluoroethylene (PTFE) base plate (4). The silicone sheet (2) is place...
WELDING A SPOOL PIECE OF GRADE TX 63 ON A RADIANT TUBE
In the manufacturing of seamless steel tubes in the cold drawing process, the tubes are subjected to internal stresses which are to be relieved in the heat treatment furnace where radiant tube assembly is used for heat transfer purpose and these assemblies of t...
A fan for an electrical machine a grove is made in a fan guide, made out of aluminum alloy, to accommodate a fan blade.
The invention relates to disclosed is a process for manufacturing of a transition Panel processing apparatus for high temperature and high pressure applications which comprises a panel tube (1), a fin (2), a forged triple elbow (5), a forged single elbow (6), further preheating the welding joint surface of the tubes...
A method for preparing of composite sheets comprises the steps of mixing of the epoxy resin with the curing agent in the ratio of 4:1; fabrication of aramid fibre or kevlar fibre (kevlar-49) and high strength silica based fibre through multiple composite layers; coating of epoxy resin on the successive composite lay...
A novel coating composition of rutile coated stick welding electrode comprises the components such as cellulose, limestone, titanium dioxide rutile, feldspar, mica, clay, ferromanganese, sodium silicate, potassium silicate, boron and titanium. Characterized in that the composition provides high charpy-V notch toughn...
Disclosed is a purging method for welding of high pressure pipes used in stream generators package links, the method comprising taking work piece (01) after cleaning the rust, followed by placing the sealing sheet (09) that has a sealing puller chain(11), from inside the work piece (01) near the butt joint; taking w...
Disclosed is a common root locator (100) placed in a turbine blade (300), keeping the axis of turbine blade parallel to both surfaces “A” and “B” horizontally, fixed in the reference system, the common root locator comprising : at least one movable half slot lock piece (101), at least one fixed root locator carrie...
A system and method for safe operation of cross-rail in Double Column Vertical Boring machine contains an interlock circuit and generating of signal for monitoring the compression of disc spring in lead screw nut housing of a vertical boring machine. The invention relates to an electrical control system (400) for re...
The present invention relates to a method for testing and evaluating the solidification cracking susceptibility in austenitic stainless steel using shielding gas. The method comprises of optimization of the shielding gas or a gas mixture to control the heat input during the welding process.This method consists of an...
Disclosed is a fixture assembly (11) to control distortion during welding between the triple elbows (01) and the stubs (02) which enables transition panels. The stubs (02) are placed on to the ‘V’ Groove plates arrangement (04) in the base plate (03) and fastened in the fixture assembly (11) by using the clamp plate...
This invention relates to an insulator (1) for air insulated substation, in 5 particular to an insulator (1) comprising three high voltage conductors (2) accommodated in a single insulator body (1). The dimensions of the three high voltage (2) conductors accommodated in the single insulator body (1) are optimized to...
The present subject matter discloses a photovoltaic system with indoor substation for greater reliability and safety. The present system includes a solar panel array of series and parallel combination placed outside to absorb sunlight and generate electricity, a power conditioning unit to convert low voltage DC powe...
The invention relates to described herein is a system (200) for automatic layout plan generation for gas insulated substations (100) comprising one or more programs including instructions for displaying the automatic layout plan in a graphic user interface for designing a plurality of super SLD (single line diagram)...
An apparatus for arresting vibration for a shaft (21) with bearing assembly in an axial fan profile, comprising M20 eye bolt with RH thread (18) locked in a mounting flange (10); a U-clamp (13) consisting of a M20 stud with LH thread (16), M10 bolt (14) and M10 nut (15) to lock the steady rest (9); turn buckle (17);...
Disclosed is a process to additively manufacture a turbo-machinery impeller with a heat treatment cycle. The turbo-machinery impeller consisting of an inlet (31), an outlet (32), a shroud (1), a hub (2) and a plurality of vanes (3) is additively manufactured using direct metal laser sintering (DMLS) (12) 3D printer ...
A Method And A Holding Apparatus For Setting Weldable Components Without Using Welding Bridge Plates
The present invention discloses a method and a holding apparatus for horizontally setting at least two separate weldable components without using welding bridge plates over pluralities of surfaces of said at least two separate weldable components, to achieve a reduction in cycle time and a reduction in number of act...
The invention relates to an apparatus (200) is provided for drawing a bank tube (102) trapped in a drum (100). The apparatus (200) comprises a mandrel (202) configured to be received by a bank tube (102), an expander (204) configured to receive the mandrel (202) and a plurality of grippers (216). The mandrel (202) c...
The present subject matter relates to a method for manufacturing an extrusion die using a 3D printing process for thin wall ceramic products. The method comprising the steps of: fabricating an extrusion die using a direct metal laser sintering (DMLS) technique in a 3D printing process such that the extrusion die has...
The present disclosure relates to a fixture (400) to eliminate root oxidation in a welding process. The fixture comprising a case to accommodate a tube and a pipe mated against each other. The case is provided with one opening for inlet of an inert gas and another threaded opening to receive a bolt to firmly hold th...
ABSTRACT
“A device and method for edge preparation of thin wall pipes with different angle of chamfering”. 5
High thickness pipes are normally edge prepared in the conventional edge preparation machines where the work piece is held stationary. But these machines are not suitable for making edge preparation of low ...
The invention relates to disclosed is a method and an apparatus for a bulk material weighing and feeding operating in partial gravimetric mode comprises a coal inlet gate (01), a coal chute (02), coal outlet gate (03), a gravimetric feeder (04), a feeder floor (05), a pulverizer inlet chute (06), a bunker (08), and ...
A vibration dampener (214) for a boring operation is disclosed as shown in the figure 2(a), wherein the problems associated with overhang of an extending boring bar during boring operation like vibrations in the tool, chattering marks on the workpiece, poor surface finish of the workpiece, heavy noise, breakage or w...
The invention relates to described herein is a method and an apparatus for fabrication of a sleeved tube bend assembly, comprising an inner tube (102) and a sleeved tube (104) wherein the inner tube (102) is inserted inside the sleeved tube (104). A bending machine (106), and a controller (108) are disposed on and s...
A method of feeding filler material in a welding machine is disclosed as shown in the figure 1(b), wherein the problems associated with conventional method of feeding filler material like high consumption of power, high cycle time, high filler material melting time, low melted filler metal penetration, low productiv...
The present invention discloses and claims a gasification process for the conversion of the high ash coal to syngas and production of methanol from syngas, said process comprises of steps allowing reaction between high ash coal with gasification agent in a fluidized bed reactor; maintaining the operating temperature...
A rear feed stand for more than 12m. length tube loading in STBW machine. The steel tube (1) which are to be welded with another steel tubes having proper edge preparation (12) are loaded in the rear feed stand (13) by using a crane (not shown) and the tube are spread with back to back position on the slope beam (3)...
The invention relates to a simulation apparatus for Seal oil system for pre-setting and verification of operating parameters of Seal oil unit at manufacturing plant itself before installation at Thermal power station. The apparatus consists of a technological tank (1) configured as oil reservoir, technological motor...
An improved method of sealing a rotating equipment (35) in hydro-generators for high temperature applications is disclosed. The method comprising the steps of: manufacturing a plurality of metallic base holders (1) for forming a non-metallic brush seal (301) to be disposed on the rotating equipment (35) at an angle ...
The invention relates to described herein is a method and apparatus for a single-axis solar active tracker apparatus (100), the tracker apparatus comprises a plurality of photovoltaic solar collecting panels (102) coupled to a mounting frame (104) which is attached to an elevation tracking pivot (106). The elevation...
An apparatus for protection of weld of pipe from contamination and oxidation during welding process, the apparatus (10) comprising of a base table (1) over which a height adjustment screw assembly (2) is mounted at one end (2a). the other end (2b) (2) a guiding base frame (3) is mounted. The guiding arrangement base...
This invention describes a method of carrying out local PWHT of welds, at a minimum soaking temperature of 950° C, made in Inconel 617 pipes of wall thickness not exceeding 40 mm. The method for post weld heat treatment of Inconel 617 pipe comprises of the steps of: calculating (101) Heat Band (HB) of a pipe (1) ove...
This invention relates to Bottom Bus Duct Connection of Gas Turbine Generator for Gas turbine/Combined Cycle power plant comprising a gas turbine generator (100) mounted on a foundation (102), wherein an adopter chamber (103) accommodating multiple ducts (103A) is connected to said turbine generator (100), in which ...
The invention relates to a real time radiographic system (04) for performing a real time radiographic test on various welded tubes. Attaching an outer diameter of the short length welded tubes (01) and a plurality of spool pieces welded together to configure a telescopic adapter (14). Fixing the short length welded ...
The invention relates to disclosed is an electro-mechanically controlled apparatus (05) for ejecting the bent tubes after each bending operation from the rotary cold bending machine bed (01), the improvement is characterized in that the apparatus having a lifting mechanism comprising a cylinder (09) pivoted to its e...
The invention relates to a system (100) for extracting plug (12) from a tube (8). The system (100) comprises a hydraulic jack (2), a piston (6) slidably connected to first end (13) of the hydraulic jack (2), a handle (1) connected to second end (14) of the hydraulic jack (2) and a tube holder (9) configured to recei...
The present invention relates to a system (101) and process (200) for performance validation of high speed motor. The system comprises of a electrical cabinet (1) over which the various operation push buttons (2) are mounted for perfoming switch ON and OFF funtion. Further the system comprises of plurality of digita...
This invention relates to an arrangement for uniform gas flow with regulated pressure to straight tube butt welding machine 10 to reduce the rejection and manual welding process comprising straight tube butt welding machine (15) for welding tubes (1), wherein the welding machine (15) is having a plurality of welding...
The present invention relates to a high voltage generator bushing device (15) for water cooled generator. The said bushing device comprising: an epoxy resin body (14) accommodating an alloyed high tension (HT) sleeve (1) and a grounded terminal (10), wherein the grounded terminal (10) is positioned in the volume of ...
ABSTRACT
“Set up to measure quantum efficiency and current voltage characteristics of large area solar cells accurately”.
There are various methods of finding the loss in a cell which have been adopted from the available characterization equipment of microelectronics where the size of the sample was a few sq mm or...
Disclosed is a method and improved system of mechanical vibration exciter providing unidirectional harmonic motion in vertical, horizontal and axial direction to the testing specimen for evaluation of modal characteristics of support structures and, the system comprises of a plurality of rotatable unbalanced unit pl...
The present invention relates to a system (100) for testing the performance of an oil cooler. The system (100) comprising an oil circuit (101) including an oil storage tank (102) with a heating element (103), an oil filtration system (104), an oil pumping and re-circulation system (105), a temperature and pressure c...
This invention relates to a multi-function drilling tool (19) comprises a shank (14), one end of which is secured to a spad drill insert (11) and a boring insert (12) is placed above the spad drill insert (11), wherein coated carbide chamfering insert (13) is provided at the top of the curved surface (18).
It is as...
Described herein is a method and system for a cooling circuit arrangement (200) of a high temperature superconducting (HTS) synchronous machine (100), comprise a multiple pole rotor having a plurality of superconducting pole coils (203, 204) housed by a rotating cryostat and connected to a cryocooler. A cryogen flow...
A method to manufacture a new-designed ‘Y’ type globe valve which eliminates the problem of seat leakage in valve which eliminates the problem of seat leakage in valve body (01) and disk (19N). The inlet and outlet of the valve body is machined. Then, stellite deposition (02, 17N) is carried out on valve body (01) a...
The invention relates to described herein is an arrangement (100) and a method of edge wound fabricated field coil of rotor poles for rotating salient pole electrical machines comprises a field coil assembly (20) having at least one half turn field coil assembly (12), at least one modified half turn field coil assem...
A HIGH LOADED THREE DIMENSIONAL MOVING BLADE FOR AXIAL STEAM TURBINE
The present subject matter relates to a high loaded three dimensional (3D) moving blade for an axial steam turbine. The moving blade (100) comprises a set of subsonic blade profiles (1-9) where each blade profile is made up with suction and pressu...
Disclosed is an automated control system for an automated cleaning apparatus for cleaning the solar panels, the control system comprising: at least one battery charging unit (16) to recharge at least two batteries (11,12) and at least one power unit (15) to provide power to said control system; at least a system uni...
A portable device (100) is provided for applying conductor paste on thin film samples. The portable device (100) comprises a printing screen (102) configured to receive conductor paste, a squeegee (104) arranged above the printing screen (102) and a flood bar (108) arranged above the printing screen (102) and adjace...
The present disclosure relates to transportation cum storage device for stator core and winding assembly of the turbo-generator comprising a base structure (100) supporting a load transferring structure (200) mounted with the stator core and winding assembly (400), wherein the transportation cum storage device is ac...
The invention relates to an described herein is an arrangement for lifting stator assembly (22) for hydro generator using a spreader beam assembly (24) and a trunnion assembly (18) comprises at least one rectangular plate (1,6) and a plurality of joint plates (2,5) welded together to form an octagon assembly. A plu...
The invention relates to a detachable vacuum chamber (101) for a high temperature superconducting (HTSC) rotary assembly of rotating machines. The detachable vacuum chamber (110) is of cylindrical configuration (401) with integrated flanges (406, 407) on each side. One side of the flange (406) protruded radially out...
All rotating electrical machines generate heat as a result of the electrical and mechanical losses inside the machine. Losses are high during starting or dynamic braking. Also, losses usually increase with increased loading. Cooling is necessary to continuously transfer the heat to a cooling medium, such as the air ...
This invention relates to reference block to determine the dead zone and volume of coverage for TOFD inspection in pipes and headers comprising a block having two notches (N1, N2) and three side drilled holes (D1, D2, D3), wherein depth of the notch varies along the longitudinal direction from edge of the pipe towar...
A novel 1190 kW, 3-phase AC traction motor adaptable to 9000 HP AC Electric locomotives has been developed comprising, a stator having stator frame and stator core formed of electrical sheet steel lamination, a number of punched slots of size 480 mm and above, a rotor having a shaft and plurality of electrical sheet...
The present disclosure relates to a purging apparatus for welding of tubes/pipes (202 and 204). The purging apparatus comprises a pipe (202(a)), a pressure sensor (208) and a variable flow controller (210). The variable flow controller (210) includes a timer (210(a)). The pipe (202(a)) carrying the purging gas (argo...
A device (40) for stretching of a stud (30) is disclosed as shown in the figure 2, wherein the problems associated with conventional method of tightening of nuts/studs through spanners like loosening of the nuts/studs when subjected to stresses and thermal fatigue, lack of proper gripping surface, requiring great ef...
The invention relates to an apparatus (100) is provided for withdrawing a broken tube expander (214) trapped in a bank tube (202). The apparatus (100) comprises a driving gear (102) configured to rotate a mandrel (212) of a broken tube expander (214), at least one driven gear (104) configured to be driven by the dri...
A method (200) is provided for heat treatment of a high pressure bypass valve (100). The method (200) comprises winding a heat cable (102) around a first member (104) of the bypass valve (100) to form a single layer of first coil (110). Coil length of the first coil (110) is five times the cross-sectional thickness ...
The invention relates to the described herein is a method and an apparatus for using optical element in the manufacturing of heat exchanger. A holding portion to hold a heat exchanger shell 01, wherein the holding portion includes a plurality of hollow circular shells welded to form an outer structure, a target hold...
The invention relates to a drill apparatus (100) is provided for drilling holes (112) into a round pipe (108) at various angles. The drill apparatus (100) comprises a support plate (104) configured to receive a round pipe (108), a jig plate (106) configured to be connected coaxially to the support plate (104) and a ...
The present disclosure relates to a spindle (208) for a machine tool. The spindle (208) for a machine tool comprises a first portion (208(a)), a second portion (208(b)), a third portion (208(c)) and a fourth portion (208(d)) formed in sequence with gradual decrease in diameter from the first portion (208(a)) to the ...
The invention relates to described herein is an apparatus for lifting and turning wound pole assembly (12) in synchronous motors comprises a lifting crane (10) having at least one electric motor and a cantilever type (16) with a pointed projection (14) connected to a top support plate assembly (6). A top portion of ...
The invention relates to disclosed herein is a method 100 to detect and mitigate the effects of Potential-induced degradation (PID) in solar PV power plant 102. The method comprises of photovoltaic arrays 104 having a plurality of photovoltaic modules 106. Recording open circuit voltages (Voc) 108 of the plurality o...
The invention relates to described herein is a method and a system 100 for carbon dust extraction for synchronous motors, comprises a slip ring assembly 102 having a dust-collecting unit for extraction of carbon dust dropping from the carbon brush and a carbon dust collector assembly 104 is connected to a carbon dus...
The invention relates to a method for material handling of non-ferrous circular job using improved tackles is disclosed. The method comprising steps of handling the job from source to the destination using the tackles; placing the job at right position for further processing using the tackle; and placing the job to...
This invention relates to a replaceable steady pad, particularly for cylindrical workpieces. Said steady pad comprising of a mounting base 10, an internally recessed plug bore 11 disposed towards center of mounting base 10 to receive the protruded plug of spherical joint of steady rest; locating pin 12 to locate and...
The invention relates to a three phase common enclosure type gas insulated circuit breaker (101) is disclosed. The gas circuit breaker comprises: at least three interrupter poles; a fixed contact system (2) and a moving contact system (3); a designated pressure propelled fixed arcing contact system (8); an insulatin...
A method has been devised for inventory tracking in open yards at power project construction sites using self-responsive RFID tags, GPS and photo of stacked material. It involves using RFID BAP Tags, GPS enabled RFID handheld reader and inventory management software to read, write, re-write and capture the GPS data ...
The present subject matter relates to a method of welding and testing two dissimilar metal alloys 22Cr25NiWCoCu steel and 18Cr09Ni03CuVNb steel in a tubular or similar shape with an approx. 12 mm thickness using ER NiCrFe-7a as a filler material. The welding procedure is carried out using the Hot Wire Gas Tungsten A...
This invention describes a technique for carrying out correction of distortion in stiffened thin sheet panels (100) made of high strength low alloy steel (DMR249A), that are used in a variety of applications including ducts and wind boxes for boiler and ship building. This technique depicts the usage of irreversible...
This invention relates to foot operated sanitizer dispensing device for contactless dispensing of hand sanitizer to user to combat covid-19. The telescopic pipe type device for dispensing of hand sanitizer through actuation of foot pedal is simple mechanical device to dispense the sanitizer for the usage of the empl...
Shielded meta arc welding process plays an important role in the welding of many thick walled steels in defence sectors. In modern time the defence sectors is making use of steels of higher strength. Therefore, there has been a demand from the user industry for Shielded Metal Arc Welding electrode with better operat...
Described herein is a system and method for controlling air pollutants in a traffic junction using an air pollution control tower (200). A sucking unit (101) is configured to suck polluted air (102) from ambient air. A ducting line (146) positioned at a predetermined height and connected to a tower inlet line throug...
A process for improving the WC- Co HVOF coating properties for under water Hydro turbine components, said process comprises the steps placing the HVOF Coated samples under heating furnace and creating vacuum; an inert atmosphere was created by purging argon gas and maintained the pressure at atmospheric pressure; in...
1. This invention relates to a Gas insulated circuit breaker with improved interrupting performance comprising of vertically/horizontally mounted interrupter pole(20) and linearly operating drive with coupling element,wherein the interrupter pole (20) includes top pole(dynamic pole) connected to bottom pole(static p...
The present invention discloses a gas insulated transmission line comprising of: a non-magnetic outer sheath (001) which is at ground potential; a non-magnetic inner conductor (002) which is at high voltage encapsulated by said outer sheath, held horizontally and concentrically to said outer casing by means of insul...
A top pressure recovery turbine for waste heat recovery comprises a turbine (10), having an inlet duct (I), an exhaust duct (E) and one or more rows with each row having at least one inlet guide blade (1), at least one stationary blade (3), at least one rotating blades (2, 4). Each of the blades (1,2,3, 4) compris...
The present disclosure relates to a carrier plate (400) welded on to a pipe (200). The carrier plate (400) comprises a rectangular block having converging slant faces (400(a)) joined by a rectangular plate (400(b)) at its bottom portion (400(c)). The rectangular block is adapted to held in position over the pipe (20...
The present disclosure relates to a fixture (100) for a welding of tubes (200). The fixture (100) comprises a pair of jaws (102), a mounting plate (104), a pair of lower plates (106), a pair of upper plates (108), a pair of vertical plates (110), a pair of spindles (112) and a pair of handles (114). The tubes (200) ...
This invention relates to a fume extraction system (100), for removal of fumes during a hot bending process in a bending machine. The fumes generated due to the burning of paint, oil, metal and other foreign particle available on the tube/pipe during heating. In hot bending operation tube/pipe is generally being hea...
A method for fabrication of high wear resistance grinding rolls with enhanced grinding ability and higher operational life comprises the steps of conversion of composite granules to a defined shape and cast with high chrome; arranging of cast compounds on the outer periphery of the casting die and poured with SG ir...
Disclosed herein an enamel coating process for improved corrosion resistance in metal plates. The process comprising the steps of pre-treatment of metal plates (S101); preparation of enamel slurry (S102); optimization of plurality of additives (S103) and mixing into enamel slurry (S104); coating of enamel on the met...
Described herein is a welding training device (100) and a method for training and evaluating the performance of a welder comprises a grooved pipe (01) and a grooved plate (02), wherein the geometric characteristics are predetermined and further includes an element (03). A workpiece (04) adapted to be mounted on the ...
The present invention relates to a device (100) for obtaining improved assembly and alignment of stator core (4) which comprises of a two wedge shaped planks (5, 7) obtained by diagonal cut along the thickness of a scraped building bar. The wedge shaped planks (5, 7) are configured such that one is mirror image of a...
The present invention relates to an autonomous system for monitoring, forecasting and operation of a dust cleaning device for photovoltaic panels comprising an automatic data processing system (18) operating artificial intelligence program (19) for determining as to when and how long to clean solar panel (1) by sola...
SEALING ARRANGEMENT IN A BEARING OIL COOLER
Described herein is a leak-proof sealing arrangement (200) in a bearing oil cooler comprising of a pipe (103) connected to a water box (101). The pipe (103) passes through an opening (104) in a top cover plate (105) covering the water box (101). A first washer (203) is we...
This invention relates to a device for slitting of wedges used in the gate valves. Normally, the wedges are used in the gate valves have to be silted in the middle and the conventional methods is using gas cutting operation which is not uniform and the time consuming process and the other machining methods are costl...
A method for bolted connection with straight type bracing for Electrostatic Precipitator (ESP) is disclosed. The method comprising steps of: Connecting different structural component of the ESP, connecting new plates which are lying along the orientation axis 1 (3) and orientation axis 2 (4) to a single orientation ...
The present disclosure relates to a dual mode compact gas insulated bus (100). comprising one air insulated switch gear and one gas insulated switch gear having multiple bays (101, 102) with plurality of bus arrangement (101a, 102a). The dual mode compact gas insulated bus (116a) is extended in the form of gas insul...
Discloses is an electric trip circuit for gas stop/speed ratio and control valve of heavy duty gas turbine, said electric trip circuit comprises: a normally opened solenoid valve of 20FG-1, and a trip relay valve connected with manifold for energized and de-energized for causing dump hydraulic oil from the cylinder ...
Described herein is a process of producing a filler-modified epoxy resin for high thermal conductive electrical insulation application and a filler-modified epoxy resin thereof. The process (100) comprises preparing (102) an emulsion of a nanostructured filler material by mixing the nanostructured filler material, a...
A method for controlling surge in a compressor (2) using a tabular approach, wherein said compressor (2) having a surge Limit Line (SLL) setpoint Table (9) comprising: Determining slope of Operating point (kop); Determining slope of Surge Limit Line(Ksll); Introducing a safety margin (8) to the KOP; and Comparing sa...
Described herein is a method for estimating residual life of ceramic coating applied on a gas turbine, comprising of preparing a metal substrate (101) and dividing the metal substrate (101) in a multiple square blocks. A top coat (102) and bond coat (103) of coating is applied on each of square block. After that tes...
The invention relates to a method for marking a boiler fitting during angle marking process, the method comprising steps of: clamping a laser light (3) on a laser light clamp (1) set on a Vernier height gauge (2); clamping said Laser light unit on a Swivel base (5) of a height gauge clamp (4); rotating laser light u...
An improved system for protecting condensers for condensing steam from a steam turbine in a thermal power plant is disclosed, comprising: one or more sensors configured to measure and send signals to a controller which send energize or de-energize command to a directional solenoid valve (3) which is mounted on a fir...
The maximum power generated by the solar panels during daytime depends on many factors but the main factor i.e. the accumulation of dust particles and debris on the surface of photovoltaic (PV) panels reduces the power output especially in arid, dusty environments. As a result of continuous soiling, a layer of dirt ...
A detachable former system for racetrack shaped double pancake high temperature superconducting field coils. The system comprising a bottom plate (404) placed on a guide (409). A bottom pancake (406) construct by wrapping a high temperature superconducting wire around the bottom plate (404) of former. A middle plate...
A universal edge preparation apparatus (100) and method (200) for interconnecting stubs in the header of the steam generator, the universal edge preparation apparatus (100) comprising a tool holder (102) made of high thickness treatable rod, wherein the dimension of the morse taper (104) of the tool holder (102) is ...
This invention relates generally to an attachment for centrifugal expansion of a rotor end portion for restoration of rotor end towards thrust end including journal bearing portion, in case of rotor failure. The proposed rotor end attachment comprises a machined end portion, a plurality of joint bolts and a pluralit...
Described herein is a device for protecting a transformer of a substation, comprising of multiple three-phase current transformer that are connected in series with the incoming and outgoing transmission line, multiple three-phase voltage transformers that are connected between the line and the ground, an insulation ...
Disclosed is a method for recovering waste heat by using a system in the boiler flue gas duct, the method comprising : doing a structural arrangement of an annular ducting system (25) in the boiler; placing a plurality of thermoelectric generator (TEG) to receive waste heat from the boiler flue gas, wherein each of ...
The novel locking arrangement (200) in vertical synchronous motor with brushless excitation comprising a shaft (202) having a stepped portion and a plain portion, a top thrust bearing (204), a thrust collar (206) wherein the thrust collar (206) is shrink-fitted to the shaft (202), a locknut (208a) and a lock washer ...
Described herein is a winding device for fabrication of high temperature superconducting field coils, it comprises of a central mandril 518 provided over central circular plate 501, a primary rotating arm 510 and a secondary rotating arm 514 attached on the central mandril 518 via a primary rotating arm drive motor ...
ABSTRACT
ANTI-TARNISH NON-CYANIDE BASED SILVER PLATING
Described herein is a method for non-cyanide based silver electroplating. The method comprises of various steps such as preparing an electrolytic solution using the mixture of Succinimide, Silver Nitrate, Methanesulfonic acid, Potassium Carbonate and Diethylen...
Described herein is a device for machining dynamoelectric machine pole key. It comprises of a base plate 10 fixed on the machine belt with the help of threading means 11, 12. The pole key bar or plurality of pole key bar(s) 30 laid onto a slot 32 provided on the base plate 10 and screwed for providing clamping force...
The present invention relates to a new Nickel based super alloy turbine casing material and method of testing thereof for high-temperature applications. The material, Alloy 625M is envisaged for Indian Advanced Ultra Super Critical (AUSC) high pressure (HP) and intermediate pressure (IP) turbine casings applications...
This invention relates to a solar Panel for real time monitoring of cell temperature in actual field conditions comprising solar cell string (3) interposed between two sheets (2, 4), which is covered by front glass panel (1) and module back sheet (6). A passive RFID tag (5) is placed on one of the cells (3) for real...
The present invention discloses Permanent Magnet Synchronous Motor (PMSM) with mechanical stability producing maximum torque and having higher power density. The said disclosure relates to inset type PMSM configured with a stator assembly comprising of stator frame 101, stator core 102 with copper strip coil winding...
The subject matter disclosed herein relates a method for correction of buckling arising during fabrication and assembly of thin walled sheet metal panels and for reducing the amplitude of the dished mode of distortions occurring in thin plates constrained between stiffeners. The present method is capable of reducing...
The present subject matter relates to a bushing (500) to provide protection to a transformer (100) during failure conditions. The bushing (500) comprises a central metallic tube (502) carrying a conductor, a porcelain insulator (501) surrounding, a bushing head (503), an oil gauge (504) and a pressure relieving arra...
The subject matter disclosed herein relates a multi-pass welding process for butt joining of stainless steel tubes (100a, 100b) having high wall thickness, especially the Super 304 H Stainless Steel tubes. The process steps include initiating of welding arc between the tubes (100a,100b) by means of a current carryin...
The invention relates to a fuel ejector design for gaseous fuel combination where the gaseous fuel is supplied to the annular space (5); wherein the gas is ejected through a ports (5) at an angle ‘?’ into gas combustion chamber or furnace. The gas ejector is designed for various gaseous fuel applications with variou...
The present invention discloses the SAW process applied to Circular profile groove welding machine embedded with adapter (03) and fixture (05) for automatic welding of steam outlet nozzle (02) with secondary dished end (01) assembly. During manual welding process in steam generator, circular profile groove welding ...
The present disclosure relates to a laser peening process for inducing compressive residual stress in gas turbine bucket root. Carrying out a laser peening on Inconel 738 metal at 2J energy, spot size of 2mm X 2mm, at 5 Hz frequency and 20% overlap. Providing a surface preparation and a stress relieving of samples ...
Acoustic experiments has revealed that aero acoustic noise generated from the external fan (3) is the dominant source of motor noise. External fan (3) is located inside a rectangular plenum chamber (5). In the original design of the motor (1) there is a silencer at the inlet of plenum chamber air entry cutout (22) a...
The present disclosure defines a spray assembly (100) for disinfecting an enclosed area comprising a can (102) for storing a disinfectant based liquid, a spray head (104) for releasing the disinfectant based liquid in an atomized form into an enclosed area, a liquid passage (106) for connecting the can (102) with th...
Described herein is a steam generator (200) of a nuclear power plant. The steam generator (200) comprises a feed liquid pipeline system (202) located below an upper deck plate region (200-1a) of the steam generator (200). The feed liquid pipeline system (202) comprises a single connecting pipe (208) that connects a ...
The present invention relates to an assembly for access door cum observation port for steam generator furnaces. The access door and observation port are located in different locations based on operation and maintenance requirements. The design comprises of an observation port (11) that is mounted on the outer cover ...
The present disclosure provides an assembly (400) for suction of hazardous fumes in an orbital TIG (tungsten inert gas) welding machine, the assembly comprises: a pump and motor sub-assembly (100), wherein the pump and motor sub-assembly (100) is placed above a base (402) of a machine frame (400);a flexible hose (3...
The present invention is aimed at controlling distortion which is produced as a result of welding of plates on preexisting attachments like tube lugs in tubular panels. The procedure consists of making the welds and weld passes by following a particular order in choosing the welds and by adopting a special weld sequ...
ABSTRACT
A SYSTEM FOR ORIENTATION AND EXTENSION FEATURES OF GAS INSULATED BUS AND SWITCHGEAR BAYS
The present disclosure relates to a system for orientation and extension features of gas insulated bus and switchgear bays comprising a main bus (06) split into a two main bus (6A, 6B) by sectionalizer bay (18). A s...
The present subject matter relates to a fixture 100 for movement of welding components of an orbital TIG welding machine. The fixture 100 comprises an arch shaped frame 101, a rail arrangement 102, two stands 103a, 103b, 103c, 103d provided on each side of the arch shaped frame 101, a roller arrangement 104 and two ...
The present invention relates to a device (100) and method for reducing the pressure of start-up vent steam which comprises a plurality of expanders (01, 03, 05, 07, 09, 10) and a plurality of orifice plates (02, 04, 06, 08, 11) having orifice holes through which the steam passes successively. Each orifice plates (0...
ABSTRACT
A MODIFIED TOOL HOLDER APPARATUS IN THE EDGE PREPARATION MACHINING
The present disclosure relates to a modified tool holder apparatus in the edge preparation machining. The apparatus comprising an “a” angle in 11° to the horizontal axis mode. A first vertical surface (09) made parallel to a second vertica...
The present invention relates to a system (100) for facilitating orbital tungsten inert gas (TIG) welding which comprises a geared roller (1) with teeth (2) having an aperture (3) for fixing an insulator (4) and a mounting shaft (5). The insulator (4) provides isolation between a positive and a negative supplies in ...
ABSTRACT
TORQUE MEASUREMENT VALIDATION SETUP FOR HYDRO-MACHINE MODEL TEST RIG
This invention relates to Torque measurement validation setup for hydro-machine model test rig comprises of torque measurement, T12 torque meter [2] installed on the input shaft [1A] of model bearing [1], the input shaft [1A] is fitted ...
End winding vibration monitoring (EVM) of a turbo generator in operation is very important for trouble-free operation of a turbo generator.
This invention relates to Feed-through device for interfacing of fibr-bragg-grating (FBG) sensors installed in the turbo generator to outside monitoring system comprising a tub...
Ventilator With Double Row Vents To Achieve Higher Airflow In 3 Phase Fully Suspended Traction Motor
ABSTRACT
“VENTILATOR WITH DOUBLE ROW VENTS TO ACHIEVE HIGHER AIRFLOW IN 3-PHASE FULLY SUSPENDED TRACTION MOTOR”
This invention relates to ventilator with double row vents to achieve higher airflow in 3-phase fully suspended traction motor for Mainline Electric Multiple Unit (MEMU) / Electric Multiple Unit (EMU) ap...
ABSTRACT
TITLE: A SYSTEM FOR DETECTION OF FAILURE CONDITION IN A ROTATING DIODE
The present disclosure relates to a system (126) for detection of failure condition in a rotating diode. Herein, the system (126) comprises of a diode failure detection relay having a signal conditioning unit (103) and a computational un...
ABSTRACT
A DEVICE FOR ALIGNMENT AND ASSEMBLY OF SPRING IN TURBOGENERATORS AND A METHOD THEREOF
This invention relates to a device for alignment and assembly of spring in turbo generators and a method thereof. Cantileverly suspended metallic plated called Springs (30) are installed in large size turbogenerators to ...
Disclosed herein provides a horizontally mounted gas circuit breaker [01] for hybrid gas insulated switch gear comprises a left hand side pole shell [01A] having three ports, wherein a first port [01D] and third port [01F] being connected to an epoxy support insulator [02], a second port [01E] being connected to a f...
ABSTRACT
TITLE: A SYSTEM FOR REMOTE MONITORING OF REAL TIME LOCATION OF MANPOWER AT A SITE
The present disclosure relates to a system (100) for monitoring and tracking manpower at a construction site. The system (100) comprises of a long range wide area network (LoRaWAN), a Bluetooth low energy (BLE) technology,...
ABSTRACT
A CENTRIFUGAL BLOWER WITH THE SHEAR RING
The present invention relates to a Centrifugal Blower with the shear ring comprising of casing [1], end covers [2a &2b], diaphragms [3,3a & 3b], and rotor, wherein the process air enters into said casing [1] from suction nozzle [1a], and gets compressed throu...
ABSTRACT
METHOD AND DEVICE FOR CHECKING COMPLEX END FACE RADIUS OF MILLED GUIDE BLADE FOR STEAM TURBINE RING SEGMENT
The present invention relates to a device for checking complex end face radius of milled guide blade for steam turbine ring segment comprising a body [B] and an angle block [A] assembled to th...
ABSTRACT
A FIXTURE FOR CHECKING NATURAL FREQUENCY OF LOW PRESSURE ROTOR BLADES IN VERTICAL POSITION
This invention relates to a fixture for checking natural frequency of low pressure rotor blades in vertical position comprising a base Block (11) supported on multiple Plates (24) on resting condition and gets ...
ABSTRACT
“Apparatus to perform automatic Submerged Arc Welding of I-beam using variable speed traveling gantry mechanism”
The invention relates to an apparatus to perform automatic Submerged Arc Welding of I-beam using variable speed traveling gantry mechanism comprising of mounting plate (1) and linear motion...
ABSTRACT
“A FIXTURE FOR CUTTING LARGE DIAMETER OPENINGS IN PLATES AND PIPES USING GAS FLAME”
The invention relates to a fixture for cutting large diameter openings in plates and pipes using gas flame comprising of a fixture mounted with a torch assembly. The fixture includes a main rod (4) with main clamp (1) ...
ABSTRACT
“APPARATUS FOR AUTOMATIC WELDING IN WHEEL COLLAR TO BRING BACK COLLAR THICKNESS AND RE-USE WHEEL OF CRANE”
This invention relates to apparatus for automatic welding in wheel collar to bring back collar thickness and re-use wheel of crane. The invention exploits the method of motorized gear mechanism ...
Pressure Holding Device Used In Hydrostatic Testing Of Coal Bed Methane Wellhead Using High Pressure
ABSTRACT
A PRESSURE HOLDING DEVICE USED IN HYDROSTATIC TESTING OF COAL BED METHANE WELLHEAD USING HIGH PRESSURE
This invention relates to a pressure holding device used in hydrostatic testing of coal bed methane wellhead using high pressure. The coal bed metha...
ABSTRACT
TITLE: METHOD AND FIXTURE FOR ACCURATE ASSEMBLY OF LOW PRESSURE TURBINE INNER CASING OF SUPER CRITICAL SET
The present invention relates to method and fixture 300 for accurate assembly of Low Pressure (LP) Turbine inner casing of supercritical set. The present invention discloses the method to carry o...
ABSTRACT
TITLE: A METHOD OF HEAT TREATMENT FOR PRECIPITATION STRENGTHENED STEEL
The present invention aims to simulate different heat treatment cycles, to meet the requirement of toughness property. The present invention details a heat treatment method (100) on a hot formed grade 23 boiler tube panels to achieve...
ABSTRACT
FIXTURE AND METHOD FOR REMOVING/INSERTING JAW FACES OF HYDRAULIC GRIP IN DYNAMIC TEST MACHINES
The invention relates to fixture and method to remove/Insert pair of Jaw Faces of Hydraulic Grip in Dynamic test machines. The pair of jaw faces used in hydraulic testing machines are constructed in tapered fa...
ABSTRACT
A REVOLVING PULSE CLEANING SYSTEM FOR CARTRIDGE TYPE FILTER
This invention relates to a revolving pulse cleaning system for cartridge type filter comprises a frame [1’,100], top of which is mounted with a plurality of arms [11] supporting a top bearing pad [4] and top cover plate [5] with adapter [8] at...
The present invention provides an assembly (100) for maintaining a vacuum level in HTS rotor, the assembly comprising an HTS rotor section (130) containing an HTS rotor (101) having a drive end and a non–drive end, wherein the non-drive end of the HTS rotor includes a rotor vacuum termination flange (107); a rotor p...
The present subject matter discloses a rotating electrical machine having a rotor, a stator and one liquid cooled jacket over stator. The liquid cooled stator jacket (700) over the stator makes the electrical machine more thermally stable and allows the operation of stator winding with higher current density, thereb...
The present subject matter discloses a skewed caged rotor (700) for a high speed induction motor comprises a rotor core (701) comprising stack of laminations with a longitudinal skew, a winding with bars and end rings (702), a rotor shaft (703) having a straight key, a drive end (DE) side bearing (708) and a non-dri...
The present invention provides a driver unit for monitoring DC voltage within limits in spraying machine or any similar type of high voltage machines. The driver unit comprises a resistive network (3) connected in between -ve supply of HV unit (2) and load/air assisted spraying gun (8) for determination of input vo...
ABSTRACT
TITLE: A RELAY CIRCUIT ASSEMBLY FOR ELIMINATION OF INDUCED PARASITIC VOLTAGE
The present disclosure relates to a relay circuit assembly (100, 200) and an electrical control scheme for reduction/removal of induced parasitic voltages in AC relay circuits. The relay circuit assembly (100, 200) comprise...
This invention describes a system (200) and method (500) for determining the average geometrical profile of the fusion zone of a weld bead deposited on a base metal, the system comprising a storage module (202) for importing the digital images of the fusion zones (1,2,3,4) of the weld bead corresponding to each of ...
ABSTRACT
TITLE: FIXTURE FOR MARKING AND LOCATING CARRIER PLATES IN HIGH-PRESSURE STEAM GENERATOR PIPES
The invention details a universal fixture (100) developed to carry out the marking for fitment of a carrier plate (12). The carrier plate (12) is used in a pipe (13) of a thermal boiler of a high-pressure steam...
[0019] Disclosed herein sodium doped cathode materials for a lithium ion battery comprising of doping of sodium element in the Lithium Ferro Phosphate or lithium-rich manganese type cathode materials in enhancing Li ion diffusion. The sodium doped cathode material for a lithium ion battery comprises sodium salt dope...
The present invention discloses a composition of refractory tubes and a method of manufacturing ceramic tube using a source of Mullite for providing high refractoriness and thermal shock resistance along reactive ceramic powders which forms mullite and with mixture of different clays to induce plastic...
ABSTRACT
A T-NUT FOR CLAMPING WORK BED IN A MACHINE BED T-SLOT
The present subject matter disclosed herein relates to a T-nut (400) for clamping a work bed in a T-slot (102) of a machine bed (101). The T-nut (400) has a head (401) for retaining the T-nut (400) in an underside of the T-slot (102) of the machine...
ABSTRACT
AN EQUAL AREA BASED SELF-AVERAGING SQUARE MULTI-PORT PITOT AIRFLOW MEASURING DEVICE
The invention relates to an equal area based self-averaging square multi-port pitot airflow measuring device. In order to cover the entire cross section of flow, optimised numbers of total and static pressure ports [1...
ABSTRACT
“A YOKE FOR INTERMEDIATE PRESSURE VALVE FOR ADVANCED ULTRA-SUPERCRITICAL TURBINE”
This invention relates to a yoke for intermediate pressure (IP) valve for advanced ultra- supercritical (AUSC) Turbine fitted in between valve and actuator. The yoke comprises a hollow cylindrical body with valve end fl...
ABSTRACT
A SYSTEM FOR DETECTING CRACKS IN SEMICONDUCTOR SUBSTRATES AND METHOD THEREOF
The present invention relates to a system (100) and a method (300) for detecting cracks in semiconductor substrates. The system and method comprising an infrared (IR) detector enclosure (102) accommodating a detector plate (...
[0040] The present invention relates to a corrosion resistant polymer coating and method for applying for preventing corrosion in FGD Absorber. The polymer coating material comprises Novolac filled with ceramic reinforced with 2.4% to 2.6% TiC powder Novolac vinyl ester filled with glass flake reinforced with 2.4% t...
ABSTRACT
“A Medium voltage electrical bushing for electric traction application”
This invention relates to a Medium voltage electrical bushing for electric traction application comprising of a bushing body[03] mounted on a High Tension Insert[01], wherein the bushing body[03] comprises of a hollow cylindrical...
ABSTRACT
FIXTURE FOR PERFOMING MACHINING OPERATIONS ON BAFFLE RING AND ITS CARRIER OF LARGE RATING TURBO-GENERATOR
This invention relates to a machine table mountable adjustable work holder fixture F for machining of annular objects. The work holder fixture F comprising base plate (10). Slots (13) provided at two ...
ABSTRACT
A TOOL FOR BORING AND CHAMFERING OF TUBES IN EDGE PREPARATION MACHINE
The invention relates to a tool for boring and chamfering of tubes in Edge preparation machine comprising of boring tip fixed with star screw (1) provided at the top of body (2) and the body (2) is placed above shank (3) constitutin...
ABSTRACT
A BLADE STUB FOR TURBINE ROTOR TESTING
This invention relates to a blade stub [100] for turbine rotor testing comprises of root forming bottom part [101] and top part [102] integrated to each other constituting a single piece, in which the stub [100] is substantially having rhomboid section in top and...
The invention relates to a high-temperature bearing for gas flow divertor inwhich the bearing will not be prone to jamming caused by thermalexpansion.The inner ring (8) is segmented in odd numbers and each segment will befree to expand in circumferential direction which will...
A high voltage high energy variable surge generator device comprising a charging circuit (1) having an auto transformer (Tl) providing variable charge to a Iowvoltage capacitor (C) attaining a desired voltage, a switch (S3) connected to a relay (Kl) to generate a surge thereby connecting the capacitor (C ) t...
A method of patterning of solar cell modules comprising the steps of forming of afirst electrode by deposition a layer (2) of transparent conducting oxide (TCO) ona substrate (1) screen printing grid lines (3) of silver paste on the TCO layer, (2)followed by laser scribing (4) alongside the...
Cold plate with machine grooved flow passages for cooling electroniccomponents mounted over the external surface of the device, comprising a baseplate (1); a cover plate (3); a clad sheet (2) sandwitched between the base plate(1) and the cover plate (3) by means of vacuum brazing; atleast o...
A process for producing a plasma-deposited multi junction solar cell device calledan amorphous silicon solar cell module comprising: a plurality of plasmadeposited amorphous silicon solar cels consisting of: a transparent sheet glassplate coated with a transparent conductive oxide (TCO) lay...
A multi-angle-settable universal copying template with a least count of0.1° adaptable to vertical boring machines having copying capability, thetemplate comprising a base plate (1) having atleast three pair of holes(H1, H2, H3) configured thereon, the base plate (1) being mountable on the
The present invention comprises an improved flame viewing port enclavelocking device comprising atleast one viewing port cover (4) releasably fixedto a flame viewing port clamp (5) and a flame viewing port flame (3) havingat least one hinge accommodating the sub assembly (4,5) of the flame<...
The invention relates to an improved filter holder device (20) for securelymounting a filter-element (08) within a hot gas filtration system, the devicecomprising a filter holder (01) configured from a both end-open metallic collar soas to have an identical internal and outer contour profil...
The present invention discloses an improved radial fan adaptable toutilities and process industries, the fan being drivable by an electric motor,the fan comprising an impeller having a back and/or a center plate (01),the plate (1) being provided with at least one blade (02); a spiral casing...
A permanent magnet machine comprising a permanent magnet rotor. a stator magnetically coupled to the rotor sleeve characterized In said rotor IS provided with a plurality of trapezoidal magnets disposed on the rotor sleeve having trapezoidal slots on the outer diameter, said trapezoidal slots on the rotor sl...
A method for selective sealing of channels in ceramic honeycombstructure comprising forming dried green plugs of ceramic material,followed by preparing a ceramic slurry containing a binder, selectivelyapplying said slurry into the cells of a honeycomb structure, and sealing thesame by...
The invention relates to an improved friction stir welding process enabled to
form a Tee joint covering the entire abutting surface of two or more
components, comprising the steps of : providing a base (B) disposing
horizontally an upper component (1) to be joined; arranging a joinable lower
component (2) vertic...
A device for electroplating axial pin holes in generator rotor, exciter rotor and slip ring
shaft core bars in turbo generators. It comprises of four tanks (A, B, C, D) containing
degreasing solution (A), copper solution (B), silver striking solution (C) and main silver
solution (D). The tanks are connected to th...
A system for provisions of compressed air cooling during 5-axis milling of steam turbine blades. Compressed Air is directed through nozzles fitted to three spindles of the machine to the contact area of the tool and work piece to cool the generated heat. A gate valve is disposed for opening and closing of compressed...
An apparatus for holding and arresting a sidewall comprising: a bottom plate (11) connected to a cold end connecting plate assembly; one or two sidewalls (12) which housed the sidewall fixture plurality of channels (2a, 2b and 2c) connected with slot mechanism; and a guide plate (4) is welded with guide moving plate...
A temperature stub (02) is placed on a guide pin (01) having step diameter. The guide pin has a threaded hole (13) on the smaller dia. A support cap (03) is placed on the top of the temperature stub (02). A locking screw (04) is threaded inside the threaded hole (13) of the guide pin making an assembly of the temper...
A novel polysiloxane mixture for coating the condenser tubes comprises of three silane compounds such as 1,2-Bis (Triethoxysilyl) Ethane (Silane-I), Bis[3-(Triethoxysilyl) Propyl] Tetra Sulfide (Silane-II) and Bis[3-(Triethoxysiyl) Propyl]Amine (Silane-III) in alcohol solution individually or in combination.
...
Rod to rod and rod to disc type joints are required for instrumentation applications in detector assembly of nuclear applications. Welding of dissimilar material like aluminum disc to steel is a challenging work since the work involves welding of two or three stainless steel rods of 10-16 mm diameter on to single al...
This invention describes a method and a testing device for the thermal fatigue testing of thick walled large size cylindrical components. In particular the device is useful in creating both the circumferential and longitudinal cracks on the testing component by controlling the internal and external restraints of the...
The invention discloses an adjustable span lifting bridge (B) for lifting heavy equipment. It consists of an I-Beam (2) with support plates (3) welded inside the I-Beam flush with the corners forming a box cum I-beam. The beam assembly is strengthened by stiffeners (4). A slotted plate (5) with milled slots is welde...
A signal indicating device for monitoring pressure of SF6 gas inside bushings of HVDC transformers, characterized by conversion of pressure difference signals inside the bushings in to electrical pulse and subsequently electrical pulse to visible signals comprising, a circuit (007), a one way switch (003), push butt...
The invention relates to an exhaust system (10; 60; 70) for exhaust gas discharged from an engine (5), the exhaust system (10; 60; 70) comprising: an exhaust pipe (11; 61; 71) including an inner pipe (37) arranged to guide the exhaust gas and an outer pipe (35) mounted outside of the inner pipe (37); and an exhaust ...
The present invention relates to a flux for TIG welding of pure Titanium and its alloy, comprising magnesium fluoride in 40 to 45wt%, calcium oxide in 30 to 36wt% and titanium dioxide in 15 to 18wt%.
The invention relates to a Clamping device, particularly jobs such as intermediate ring of large size exciters comprising of a stepped base plate (1) acting as the base for the job and preventing lateral movement of the job. A extruded solid cylindrical locating leg (9) at the center of the base plate (1) and plural...
This invention relates to a process to mitigate the liquefaction of a site constituting pond ash deposit underlain with alluvium. According to the process of the present invention, geotechnical analysis of the site constituting pond ash deposit is done followed by installation of compaction piles. The installation i...
ABSTRACT
Title of invention: A CLASS-H INSULATION SYSTEM FOR LOW VOLTAGE FORM WOUND INDUSTRIAL MACHINES
This invention relates to a class H insulation system for low voltage industrial machines which can withstand the temperature up to 180 ºC without damaging the industrial machine. Said class H insulation system ...
The invention relates to an improved method of determining fit-up line of dividing flange in axial profiled (AP) fan housing assembly of power and industrial boilers, the fan assembly comprising a plurality of static components consisting of a suction chamber assembly, a housing assembly and a diffuser assembly, the...
The present subject matter relates to a system (100) for controlling operations of roof lights installed in industries. The system (100) comprises at least one ambient light sensor (3) which is coupled with a control unit (1) and an interacting display device (2). An input analog module (9) of the control unit is co...
The invention relates to Double taper expansion fixture for outer diameter turning of thin walled cylinder with plain inner profile, using of it the thin walled cylinders outer diameter can be turned in lathes with more dimensional accuracy, shape and surface finish without any deformation. Referring to Fig. C, The ...
DRIVE SYSTEM IN THE DRIVE BENCH FOR MANUFACTURING OF SEAMLESS TUBES
A drive system in the drive bench for manufacturing of seamless tubes, the system including a main drive reversible motor (1) connected with a reduction gear box unit (3) by a coupling (2). The output of the gear box unit (3) is connected to a pair...
METHOD OF FURNACE OPERATION BY THERMOCOUPLE PLACEMENT IN FURNACE BOGIE
The present disclosure relates to a method of temperature measurement setup in a bogie hearth furnaces (job temperature controlled) to maximize its availability and operation efficiency along with work safety. The method provides a provision for...
The three bend offsets with different depth and pitch are envisaged in water wall panels of high-pressure high temperature fossil boilers. This invention pertains to the method of manufacturing a three-bend offset with different depth and pitch in a single press. Hence a method bending the three-bend offset with dif...
ASSEMBLY OF HEAT TRANSFER ELEMENT FOR ROTARY REGENERATIVE AIR PREHEATER
The subject matter disclosed herein relates to a heat transfer element assembly for a rotary regenerative air-preheater. The heat transfer element assembly has a plurality of first heat absorbent plates (1) having a plurality of notches (2) tra...
In this new invention, Needles opens/closes based on the speed error signal to attain rated speed and during loading needle operations are carried out based on Load error. This invention is resulting in reduced hardware requirements (i.e. I/O interfacing modules, relays/contactors etc.) and also provide the faster c...
METHOD FOR CONTROLLING SPEED CONTROL OF NON-SALIENT POLE PERMANENT MAGNET MOTOR (PMM)
The present subject matter relates to a method for controlling speed of a non-salient pole permanent magnet motor (PMM) in electric vehicle (EV) applications. The method comprises the steps of: providing a controller to vary stato...
A device and method for correcting ovality at the free ends of the pipe and for correcting localized dents on the near pipe end surface of the pipes at any axis by adopting the method of exerting hydraulic jacking extrusion on the inner surface of the pipe along the direction of the ovality or dent correction axis. ...
The present invention relates to the hydraulic system in particular a hydraulic tripping scheme using a series arrangement of a 5-ports 2-positions type solenoid operated spool valves (SV1, SV2, SV3) and hand operated starting device (SD1) with the intention of opening of the turbine stop valve and reliable closure ...
The invention relates to a method for correcting of power factor and harmonic suppression in parallelly connected inverter units available for oil rig, comprising : providing a DSP based controller(014) for each unit of the inverter; feeding multiple category of signals corresponding to grid voltage signal (010), su...
A novel coating composition of an electrode to be used for metal are welding of the ferritic steels in welding application comprises micro alloying elements along with the flux components such as limestone, fluorspar, titanium dioxide rutile, feldspar, ferrosilicon, ferromanganese, sodium silicate and potassium sili...
The invention generally relates to a method of leak test in the radiant tube assembly of a heat treatment furnace adapted to relieve internal stresses developed during manufacturing of seamless steel tubes, comprising the steps of attaching two flanges (11 and 12) having pitch circle diameter corresponding to that o...
A coating formulation for providing tempered martensite comprises gas formers and slag former, fluxing agents, titanium dioxide, extrusion agent, alloying elements, chromium, molybdenum, manganese and Nickel. Characterized in that the tempered martensitic microstructure is capable of producing together weld metals a...
A modified motor design comprising a first and second motor frame end stand (1,2); a first and second inner stand (3,4); wherein all four stands are connected by means of a rib structure (5) which is covered by a wrapper (6); wherein the motor dimensional parameters are configured using an arithmetic expression.
...
Described herein is a system and method of estimating and verifying of attenuation factors in gas insulated substation (GIS). The system comprises a plurality of UHF sensors (02) which are configured at strategic locations across the GIS bay. A partial discharge pulse is generated by an electronic module. The partia...
This invention relates to a fixture for fatigue testing of bush to plate weld assembly. In the invention, a fixture is designed to facilitate the fatigue testing of fillet welded bush to a shell plate joint. The bush acts as a load carrying member inside the annular portion of the shell in actual site situation. In ...
The present invention relates to measurement of force on steam control valve assembly (V) to estimate the mechanical strength of the components of the valve. In the present invention, the component of the control valve assembly is converted to load cell by use of strain gauges to develop a device to measure the forc...
TITLE: The tool for removal of burr from pipe and header 5
The Header in a high temperature high pressure steam generator is a junction in which water or steam or mixture of water and steam is collected at one side and distributed at other side. Any loose material in the header fluid Path affects performance. After...
FIXTURE FOR SETTING OF FLOW METERS
Described herein is a fixture for the setting of flow meters in a 20-torch welding machine. The fixture includes a circular hole (01) drilled according to an outer surface of a forged body of a flow meter neighboring an outlet hose connection nut, so as to support and align flow m...
The invention relates to a method of excess penetration correcting of tubes rejected in a Ball test process, the method comprising the following steps; i) measuring the internal diameter (ID) of the rejected by a Vernier calliper; ii) arithmetically calculate 80% ID of the tube; iii) selecting a drill bit of 80% ID ...
APPARATUS AND METHOD FOR PRECISE POSITIONING OF WELDED PANELS
Described herein is an apparatus (A) for precise positioning of welded panels (9). The apparatus (A) includes a C-channel frame (1) having two screw rods (2) fixed at its top with bearing and box nuts (3); a stopper plate (4) with two adjustable pivots (...
A fixture (200) for a machining operation is disclosed as shown in the figure 2(a), wherein the problems associated with conventional fixture like lack of accuracy in setting up the workpiece, face out of the workpiece, run out of the workpiece, inability of the workpiece to withstand axial thrust etc., are eliminat...
The present invention relates to a method and apparatus for the manufacturing of headers of steam boilers. The method employs an apparatus (100) for the fit-up of a rectangular plate (24) and bracing plate (20) over the header pipe (21) during the manufacturing process. The apparatus further consists of a bottom cla...
A detachable electrical connection box (55) for separately excited DC machine having incoming and outgoing power connections, to armature, field and control circuit comprising of, mounting bosses for base plate (01, 02); threaded disc for insulator pin (03), mounting boss for field terminal block (04); mounting boss...
Disclosed is a system of dual block type tree for producing oil from different depth of bores, placed in between tubing spool(16) and using wing valves (8,11) and connected both long and short flow adapter (14,15), said system comprising: at least two nominal bores (B1,B2);an offset with a predetermined value betwe...
The invention relates to a device (F) and method for clamping and machining stacked finger bars of large size turbogenerators. The device (F) consists of a base plate (10), a threaded means (50), a reference block (31), a clamping unit (20). The base plate is secured in the T-slot of the machine by threaded means. T...
The present invention relates to a method of imparting even flow distribution in an improved electrostatic precipitator (ESP), the method comprising the steps of: placing/fixing at least one hexagonal shape profile gas distribution (GD) screens (1) (2), each at the inlet (3) and outlet (4) of the ESP funnel, wherein...
A process for simulation of heat treatment cycle of high strength low alloy (HSLA) steel for attaining good ballistic strength comprises the steps of heat treatment of steel plates with sufficient soaking period; simulating of the plates in the thermo mechanical simulator; further austenitizing at 930°C alongwith su...
The invention relates to a method for current interruption by High voltage gas circuit breaker, the method comprising steps of: introducing a protection volume (09) in series to compression volume (06) for limiting very high pressures at the end of higher fault current strokes, for non-evacuation of compression volu...
A method of insulation for boiler penthouse, the method comprising steps of: insulating structural parts of the penthouse with insulation wool, characterized in that a Resin bonded wool mattress used in the insulation for heat loss prevention; fixing the insulation wool with the help of insulation fixing pin; impali...
The invention relates to a fixture (07) for welding steam generator piping to be used on an existing positioner assembly (03). Four numbers of such fixture (07) are fixed to the existing positioner assembly (03). The fixture (07) consists of two side plates (08) with drilled holes to allow side screws to actuate for...
The present invention provides the method for improving the quality of syngas by re-circulating the exhaust flue gases from syngas engine (26) to fluidized bed gasifier (14) for power generation. The efficiency of the gas engine depends upon the quality of synthesis gas and the quality of synthesis gas is improved b...
In the CNC creep feed grinding machine, any work pieces of magnetic materials are easily clamped with magnetic table of the machine but in case of non-magnetic materials a separate fixture arrangement is required for the operation. There has been a demand to develop requirement to taper grind the pressure and suctio...
The present invention relates to a helium gas based closed cycle cryogenic test arrangement for characterization of high temperature superconducting coils. The cryo-cooling operation is carried out in a closed loop process wherein cold gas is transferred from the cryo-cooler (604) to the HTS application (603) while ...
The present invention relates to an apparatus (10) and a method (20) for carrying out inside diameter (ID) boring on transition panel stubs tubes (7) which comprises a connecting means (8) for fixing a portable hand drilling gun machine (1). A rod (2) having a distal end configured to mate an opening and the other e...
This invention relates generally to an automatic, compact, portable, non-contact hand sanitizing system for dispensing alcohol-based sanitizing solution. The system comprises a storage container to store the alcohol-based sanitizing solution, a spray nozzle, a low voltage pump, a set of operation states LED indicato...
The present invention discloses an apparatus and method used to press and removal of the boiler fittings to reduce the operator fatigue and total cycle time. The same can be used to the process of pressing and removal of dished end for different diameter. The main components of the dished ends hot forming are formin...
Disclosed herein an apparatus for fabrication of hanger tubes or coils comprising a vertical support channel (101), a horizontal support channel (102), a cylindrical guide (103), a locking unit (104) welded to a screw nut (105), an inner guide plate (106), a support unit (107), a lug plate (108) and a pair of bearin...
The present subject matter disclosed herein relates to a device for setting and machining of a drum nipple (101) on a center lathe. It comprises of a base plate (102) held by a four jaw chuck, a collar ring guide block (103) welded on the base plate (102) and a collar ring (104) fitted between the collar ring guide ...
The invention relates to a method for simultaneously processing large size turbo generator finger bar is disclosed, the method comprising steps of: securing a base plate in a T-slot of a machine bed (M) using a threaded bolt; securing said threaded bolt at suitable length of shank to first pass through a hole (25...
Described herein is a method for fabrication of coils for boilers, heat exchangers and pressure vessels. Removing weld reinforcement before inserting a top hanger tube (01) and a bottom hanger tube (04). Welding the top hanger tube (01), a shaped plate (02) and the bottom hanger tube (04) and configuring as a single...
The invention relates to process of configuring retaining ring or sleeve with additive-modified epoxy resin system with higher compressive, centrifugal stresses withstanding capabilities for high voltage insulation application. The fibrous nonmagnetic material is placed on outer peripheral surface of a rotor iron co...
The present disclosure relates to a device and method of setting and make large diameter holes on tapered heavy thickness plates (11). The method comprising steps of loading the tapered heavy plate (fig-2a) on the device (18) with proper center using center line locater block (6). Setting the tapered heavy plate (fi...
The invention relates to a The apparatus (A) consist of one hollow tube acting as lifting handle (1). The lifting handle (1) is fitted with one slotted plate (2). The slot in plate is made in arc shape to adjust the angle of the punches. There is one center punch (4) and two side punches (3). One center bolt (5) is ...
Described herein is a switchgear control unit (SCU) (100). The SCU (100) includes one or more sensing modules (104, 108, 110) to sense field input data, and a processor module (102). The processor module (102) is having a data acquisition module (202) for receiving the sensed field input data from the one or more se...
The present invention provides a real time quantitative method for determination of Arc Stability during GMAW process. It is one of the important usability characteristics that is considered for process quality and evaluation. Welding characterisation is difficult due to highly nonlinear response characteristics of ...
ABSTRACT
A NOVEL EQUIPMENT AND PROCEDURE FOR JOINING OF PLATES WITH TUBES FOR BOILERS, HEAT EXCHANGERS, AND PRESSURE VESSELS
A novel equipment for welding of tubes (hanger tubes) with plates (spacer bars) for fabrication of coils for boilers, heat exchangers and pressure vessels. The equipment (10) comprising ...
The invention relates to an assembly for portable motorized lifting of weight through fork arm to approach restricted areas.
The mechanism is designed to lift weights less than a 100kg which can be hooked to the fork of the mechanism. The fork of the mechanism is designed to lift or elevate weights of 100kg or les...
The present invention develops a method of hydro testing forged valve introducing a clamping device (12N) instead of using actuator. In general, Forged High pressure valves are used for various systems like feed water system, flow discharge line, feed water line (economizer inlet), spray system and turbine extractio...
The present invention discloses a common housing to accommodate DS MES [02], FES [03], surge arrester [04], potential transformer [05], terminal equipment like gas-to-air bushing [06], gas-to-oil bushing [07], gas-to-cable termination [08] or gas insulated bus duct [09] without any modification of housing, with term...
The present invention relates to the development of improved erosion resistant nodular cast iron blades for Induced Draft fans of thermal power plants of required surface area treated with Laser Surface Melting (LSM) process with optimised line laser beam parameters for improving the surface hardness, comprising: le...
The invention relates to IoT based load monitoring system for monitoring and reporting of the ash hoppers load from remote systems by transmitting the data to WAN gateway. A load monitoring system is provided having multiple load cell sensors to be read live ash load that is accumulated in ash hoppers, and/or actuat...
Described herein is a method for joining dissimilar metal Alloy base plates. It comprises of buttering the edge of alloy base plate 617 and alloy base plate 740H with ERNiCrCo-1 as a filler material using Gas Tungsten Arc Welding (GTAW) after that treating the buttered alloy base plate 617 with a post buttering heat...
The present invention relates to a plug-in type gas insulated transmission line (15) with bus bar ([I-11, II-16, III-19, IV-22, V-23, V1-24, VII-25, VIII-29]) supported by a rib insulator (01). Gas insulated transmission line (15) is an integration of multiple sections of gas insulated bus ducts (14,21,28) with modu...
The apparatus (A) comprises of a C Channel Frame (1) having two nuts and bolts (2) fixed at side of the C Channels Frame (1). One end of pipe (2) is welded on the center of the C channel frame (1) whereas the other end of the pipe is welded on the center of the square plate (5). Two Stiffeners (4) are welded on both...
ABSTRACT
AN APPARATUS FOR WELD PAD MARKING
Described herein is a rectangular apparatus (100) for doing weld pad marking on a panel made of tubes. It comprises of a long plate (101), a medium plate (102) and a center plate (103). A protractor (104) is attached to the center plate (103) with one hinge support (105...
The subject matter discloses a marking tool (100) for marking a separator nozzle hole on a separator pipe (500). The marking tool (100) comprises a frame (101), a locating pin (103), a plurality of sliding arms (111) and a marking pin (107). The locating pin (103) is used for locating a reference axis on a separator...
In three phase gas insulated switchgear, comprising of an insulated arcing chamber (01), an insulated pull rod (07), an insulating nozzle (08) and a rib insulator (13), a method for improved insulation system from high electric field intensity, the method comprising the steps of: having a progressive gas gap around ...
The present invention relates to an apparatus (100) and a method (200) to facilitate tube cutting using a chop saw assembly (10) is disclosed. The apparatus (100) comprises a chop saw assembly (10) fixed on a shaft (1). An adjusting means is provided on the shaft (1) for facilitating return movement. A top clamp pla...
Described herein is a test fixture (100) to simulate the actual condition of assembly of material for Turbo generator rotor winding comprising a U-shaped channel (101) where a (longitudinal) Slot model (102) is inserted, a top HGL (103) and a bottom HGL (106) strip for tightening, a plurality of wedges (107) inserte...
The present invention relates to a device for collet grip adaptor for handling short length welded tubes for evaluation that contains collet head (101) for basement fixing for all other parts, Bush arresting plate (201) to grip the collet bush. Connecting plate (301) connects arresting plate and collet head (101). T...
Described herein defines an apparatus (12) for holding the boiler fittings during shot blasting process comprising a bottom ring plate (7) formed at the base of the apparatus, a vertical suspension rod (4) welded on bottom ring plate (7),a upper lifting rod (1) welded on top portion of the vertical suspension rod (4...
The present invention discloses a system and method for implementing an IEC 61850 server communication protocol in a substation automation systems comprising a developed auxiliary Bay Control Unit (BCU) (100). The BCU (100) described herein comprises of a plurality of data acquisition module (102-104) housed in an E...
A DEVICE FOR SETTING LENGTH OF A TUBE FOR AN EDGE PREPARATION MACHINE
The present subject matter disclosed herein relates to a device (100) for setting length of a tube for an edge preparation machine, comprising of a stopper (101), a top clamp (102) extending outwards in axial direction, wherein the stopper (101) ...
Described herein a blow down valve comprising a stem (05) in a form of cylindrical rod having tapering surface at upper end and threading at lower end placed in the middle of the blow down valve; a yoke bush (08) placed at the top of the stem (05);a yoke (04M) having an internal thread at top and bottom attached wit...
The present invention aims to develop a system and method for loading and unloading tubes of high pitch at high pressure and high temperature applications. The novelty of the development is for installing an arm stand (1) in between a support stand (3) and a roller stand (4) for easing the movement of a straight tub...
The present invention relates to a method for examining leaching property of end winding sealing tape in VPI resin hardener mixture. The method comprises the steps of treating 1 meter long samples of BP25795 tapes with resin and hardener mix solution for 04 to 06 hours at 65°C±5°C thereafter analyse the leaching pro...
The subject matter discloses a method for conducting stress relaxation cracking test of nickel based alloy. The method comprising subjecting the nickel based alloy to peak temperature to simulate heat affected zone. Subjecting, using a thermo- mechanical simulator, the nickel based alloy to stress relieving temperat...
TITLE: A DEVICE AND METHOD FOR MAKING SMALL DRILLED HOLES WITH INCLINATION TO VERTICAL AXIS
The present invention relates to the manufacturing of nozzles for water spraying in the shower test facility for heavy vehicles. More particularly the invention relates to make a device for nozzle drilling to drill smalles...
This invention relates to an apparatus for retrieving a mandrel stuck in a tube of a heat exchanger. The apparatus is capable of minimizing the bending moment that is induced during application of axial force and to maximize cross sectional area along with area moment of inertia and ease of pulling. The apparatus co...
The present invention provides an arrangement and method for manufacturing a magnet holding unit, magnet shoe (5), for obtaining accurate fitting of the same with magnet therewithin with the aid of one or more magnetic bolt (6) and flux barrier (7) in a rotor of dynamoelectric machine. The magnet shoe (5) is inserte...
TITLE: MATERIAL DEVELOPMENT FOR ROLLER AND CLOSING CATCH OF 145KV, SF6 SWITCHGEARS
The present invention relates to the development of the material for manufacturing of roller and closing catch of 145kV, SF6 spring loaded switchgear assembly to improve the impact resistance properties to enhance the life of rol...
AN APPARATUS FOR MOUNTING AND ADJUSTING OF A DISPLAY BOARD
The present subject matter disclosed herein relates to an apparatus (100) for mounting and adjusting of a display board comprising a plurality of first frames (101) support a second frame (102) using fasteners (106). The plurality of mounting plates (107) a...
Disclosed herein a hard armor panel (HAP) (100) for body armor. The panel (100) comprising a front strike surface (101) and a rigid backing face (102), wherein the front strike surface (101) is formed of a plurality of layers of ceramic spherical balls (103), semi-spherical balls (104) arranged in a body-centred cub...
This invention relates to Corrosion resistant polymer coating and method for applying thereof for preventing corrosion in FGD duct and Chimney liner.
The polymer coating comprises Resin mixed with hardner in a ratio of 2:1 to 4:1.
The method of preventing corrosion in FGD duct and chimney liner by applying th...
TITLE: APPARATUS AND METHOD FOR ASSEMBLY OF NEW FIELD LEAD CORE BAR IN OLD TURBO-GENERATOR ROTOR
The present invention relates to a device and method replacing the damaged Field Lead Core Bar with new one inside the rotor of a turbo generator and mounting the CC bolts accurately to perform its intended function. ...
Present invention describes a process to fabricate the bullet proof vests (BPV), which effectively resist or prevent the penetration of high energy fragments and bullets. The striking surface of BPV is covered by a very high hardness hexagonal ceramic tiles and backing layer have the embedment of very tough ceramic ...
This invention relates to Machine table mountable work holder for machining of work piece in large size turbo-generator comprising a machine table mountable base plate (10), which is provided with plurality of angle slots (11) along circumferential edges thereof. Multitude of upstanding Ribs (13) maintaining a gap t...
This invention relates to an Arced Gas Disposal System for Gas Circuit Breakers. Arced gas diverter [15A] along with the intermediate housing-I [15] are provided for discharge of hot gas during current interruption;
The bottom assembly [18-27] of the interrupter comprises of pull tube [18], current collector / pist...
This invention relates to a lab scale tool for single side etching of silicon wafer. The objective of the present subject matter is to conveniently etch the rear side junction of the surface without damaging the front surface. The wafer carrier (9) stand is configured to hold the wafer by means of holding pins (2) s...
This invention is related to the water wall panels for furnace of the super critical boilers. A small variation will affect the performance of the boiler and also it is difficult to weld the panel at elevated position at site. The bend tubes having 15° is welded with panel by manual TIG joint. The heavy tube need to...
TITLE: A DEVICE AND METHOD FOR CONTROL AND PROTECTION OF WIDE AREA ELECTRIC POWER SYSTEM
The present invention relates to a device (107) and method for control and protection of the wide area power systems from instability and cascading trips. The device (107) consists of multicore processor (209) with FPGA (208)...
Described herein a high Voltage optical Current transformer and the guiding and the sealing arrangement for the same, comprising an insulator [05]; a high voltage side module [01] connected to the top end of the insulator [05]; a low voltage side module [02] connected to the bottom end of the insulator [05]; a fiber...
The present invention provides a device (100) for marking and measuring vertical terminal bend tubes (2) at water wall panels and method thereof. The invention disclosed herein measures the longitudinal dimension of the terminal bend tube (2) directly without requirement of external tape or straight edge. A graduate...
The present invention discloses a non-returning valve (NRV) assembly (100) for sealing a current transformer (500). The non-returning valve assembly (100) comprises an NRV flange (102), an NRV cap (104), an aluminium alloy cap (106) and an NRV Plate (108). The NRV flange (102) is configured to be in contact with a c...
ABSTRACT
A METHOD OF PURGING ON TITANIUM TUBES FOR BUTT WELDING
The present subject matter disclosed herein relates to a method (400) of purging on a plurality of tubes (201, 202) for butt welding (208), it includes providing (401) an inert gas shielding through a hose (203) that is mounted on an adapter (204) a...
The subject matter discloses a method for production of dimethyl ether (DME) from coal gasification route with less energy consumption. The method comprises the steps of generating syngas from coal using a coal gasifier (202), removing particulate and tar from the syngas generated in the coal gasifier (202) using a ...
Disclosed herein provides an assembly (100) for incorporating a disconnector switch and an earthing switch in a single enclosure of Gas-insulated switchgear comprising a spherical grounded enclosure (16C) with a spherical connector (01) having multiple ports for incorporating an insulator (34) of tubular (34B) struc...
Disclosed herein a surge arrester (100) for high voltage application comprising a plurality of metal oxide elements (01) stacked in series to form a MO stack assembly (05), wherein the MO stack assembly (05) in combination form a single surge arrester stack column (16) ;a plurality of inter-stage element (02), wh...
This invention relates to a system and method of extraction of oil vapor from bearing housing for hydro generators/synchronous motors. The system includes an oil vapor extraction equipment (300) as a primary part that is connected to the plurality of bearing housing by means of a plurality of pipes (401, 402) and ma...
The present subject matter relates to a high temperature superconducting (HTS) motor with iron core stator and air core rotor comprising an iron core stator made of high electrical resistivity and high magnetic permeability material with a multi-layer multi-phase winding, an air core rotor provided with a plurality ...
The present invention is related to a medium voltage electrical bushing for insulating medium voltage conductor (1) for electric traction application and method (100) of manufacturing. The method comprises configuring a mold having a first half and a second half interacting along a parting plane, configuring a cavit...
ABSTRACT
AN APPARATUS TO SUPPORT WELDING TORCHES
The present subject matter disclosed herein relates to an apparatus (100) for supporting a plurality of welding torches (109). The apparatus (100) includes a supporting bar (101) to holding and support the apparatus (100), a first cylindrical shaft (102) that is m...
A pass partition plate arrangement (100) with multiple obround manway openings (14, 14’) in feed water heaters in thermal power plant comprising fitting an inclined pass partition plate (4) and welded to an inside surface of a Hemihead assembly (2). A manway nozzle (3) is positioned in the feed water (FW) inlet. A...
The present invention relates to a process to convert coal to methanol through chemical looping gasification method. Any carbonaceous feedstock is partially oxidized using chemical looping gasification method which employs metal oxide as oxygen carrier to supply required oxygen for partial oxidation of feedstock and...
ABSTRACT
HIGH SPEED LIQUID COOLED COMPACT INDUCTION MOTOR
The present disclosure relates to high speed liquid cooled compact induction motor comprising stator core (1) stacked using end plates (19, 20) containing multi-layer multi-phase stator winding having overhang (17, 18) on each side of end plates...
ABSTRACT
A METHOD FOR BENDING TUBES OF A FURNACE VERTICAL WALL SIDE PANEL
The present subject matter disclosed herein relates to method (400) for bending the tubes in a furnace vertical wall side panel. The method comprising of setting (401) a first set of tubes (201) and a second set of tubes (202) to form the ...
The present invention discloses a waterjet propulsion system (100) for rotating output shaft (33) in either direction. The system (100) comprises an input shaft (32) and an output shaft (33) defining an oil supply port (24). A main driving gear (20) is mounted on the input shaft (32). A main driven gear (13) is moun...
ABSTRACT
AN ARRANGEMENT TO DISTRIBUTE STEAM INSIDE A SHELL OF A STEAM INLET CHAMBER
The present subject matter disclosed herein relates to an arrangement to distribute steam inside a shell (101) of a steam inlet chamber, the arrangement comprising of a first plate (201) placed in between a U-bend portion of tubes ...
The present invention discloses an improved three phase compact gas circuit breaker (100) comprising of at least three numbers of separate interrupter poles being enclosed in a common metallic chamber or grounded enclosure (1) with an insulated gas at predetermined operating pressure. The moving contact system of th...
The present invention provides the system for removing particulate matter from a particulate collection device utilized to collect particulate matter from a synthesis gas generated from fluidized bed gasification system. The system includes a double acting pneumatic operated globe control valve (9), solenoid control...
ABSTRACT
AN ARRANGEMENT OF FIXTURES TO SUPPORT MACHINING TOOLS
The present subject matter disclosed herein relates to an arrangement (100) of fixtures to support a plurality of machining tools on a slotting machine for machining low diameter shafts on a rotor (104). It includes a first fixture (101) for supporti...
The present subject matter relates to an automatic sanitizer vending machine comprising a primary end (4) with non-contact sensors, a motor (3) to rotate once a signal is received from non-contact sensors of the primary end (4), a shaft of the motor (3) is fitted with a disc and pin combined as a crank (2). A connec...
The present invention is related to a method for welding a three-piece safety valve for ultra-super critical boiler application. The method comprising the steps of preparing a furnace system comprising of at least one dissimilar metal having different compositions and different welding temperature; welding the at ...
The present invention provides a method of coating of the shaft material of machineries by an iron based metallic powder. This has been performed in order to achieve enhanced machinability in a cost effective manner. The steps of the coating process includes preparation of the surface of a base material by grit blas...
ABSTRACT
TITLE: AN ASSEMBLY OF ACCESS DOOR CUM AIR COOLED OBSERVATION PORT FOR STEAM GENERATOR FURNACES
The present invention relates to an assembly of access door cum air cooled observation port for steam generator furnaces. The access door and air cooled observation port are located in different locations ba...
ABSTRACT
A SYSTEM AND A METHOD FOR HEATING AND COOLING A ROOM WITH SMART SENSOR CONTROLS
The present subject matter disclosed herein relates to a system (200) for heating and cooling a room (203) having a first heat exchanger (201) embedded at a depth in the earth (204), second heat exchanger (202) located insid...
The present subject matter relates to a Multi row hybrid diffuser with rationalised vaneless diffuser space and solidity wherein a centrifugal compressor diffuser is made up of multiple rows of low solidity vanes with considerable radial space for vaneless diffuser. The diffuser is mix of LSD and vaneless diffuser c...
In order to carry out the chemical treatments wafers are placed in a carrier and dipped into chemicals. Commercially available wafers carrier are good for carrying out these processes but they hold wafer from all sides and therefore lead to non uniform chemical treatment at edges. This invention holds wafers at mini...
The present invention relates to an air pollution control tower 100 for air purification and a method thereof. The air pollution control tower 100 for air purification comprises a base chamber 101, at least one pleated filter 102, an isolation chamber 103, a carbon filter chamber 104, an axial fan chamber 105 and a ...
ABSTRACT
TITLE: DEVELOPMENT OF CENTRIFUGAL DRYER FOR DRYING SILICON WAFER AFTER TEXTURISATION
The present invention relates to the development of centrifugal dryer for drying silicon wafer after texturisation. The present invention can be used to dry both multicrystalline and monocrystalline silicon wafers. T...
ABSTRACT
A Method of machining of Seven Holes Venturi Nozzle for a Steam Generator
This invention relates to Method of machining of Seven Holes Venturi Nozzle for a Steam Generator. As per Steam Generators, Heat Exchangers and Pressure Vessels pressure boundary design requirements, the nozzles to be integrate...
The present invention is related to an apparatus (100) for detecting a reduction of a level of electrolyte in a wet cell battery comprises an inlet nozzle (1) that receives the deionized water which is continuously supplied. An extruded tapered nozzle (7) is mounted in wet cell battery through an inspection hole. A...
This invention details a system (100) in which the emitted heat from the resistive load bank is converted into usable form of energy by using a plurality of thermoelectric sensors (2) that is able to convert the thermal gradient into an equivalent electrical voltage. The generated voltage is used to charge a battery...
ABSTRACT
IMPROVED METHOD OF INDUCTION HEATING FOR PWHT OF PIPE WELDS WITH LEAST THROUGH-THICKNESS TEMPERATURE GRADIENT
This invention relates to an improved induction heating method of carrying out post-weld heat treatment (PWHT) of thick wall pipe welds using power sources equipped with flexible induction heatin...
[001] This invention relates to a method (100) for forming a joint between dissimilar metals in a lance assembly comprising rotating (101) of welding torch over specimen to be welded in 5G welding position in an automatic gas tungsten arc welding (GTAW) system, preparing (102) edge design in the specimen to be joine...
This invention relates to a method and a device(10) using compressed air based spraying gun for sanitization comprises a fluid dispensing assembly having a male hose connecter and a female hose connecter welded to a steel pipe(1). A handle(4) is configured at middle portion of the steel pipe(1). A small hole is conf...
Disclosed herein provides a brush gear arrangement for DC machine comprising a plurality of steel rings (01-05) wherein the ring-1 (02) and ring-2 (03) are welded together with the help of bars (04) placed along the periphery of Ring-1 (02) and Ring-2 (03);a plurality of insulating pins (06), a plurality of double p...
The present subject matter disclosed herein relates to an air pollution control tower (100) having a base chamber (101) having plurality of openings, a plurality of pleated filters (304) placed behind demister pads (302), a dust collecting chamber (102), a first pressure development chamber (103) provided above the ...
ABSTRACT
TITLE: AN EQUIPMENT TO COUNT THE NUMBER OF WAFERS/CELLS IN A STACK OF WAFERS/CELLS
The present subject matter details an equipment (102) to count the number of wafers/cells in a stack of wafers/cells. In the present invention, the equipment (102) is provided to enhance yield and efficiency of solar cell...
ABSTRACT
METHOD OF MANUFACTURING GATE VALVE WITH SCREWED TYPE BYPASS VALVE FOR HIGH PRESSURE AND TEMPERATURE APPLICATIONS
This invention relates to a normally, the gate valves used in various lines in steam generator and steam turbine like main steam line, drip pump suction line, recirculation line, discharge line...
The present disclosure relates to a novel portable, compact equipment and a method for removing unintended bends formed in coils/heat exchanger parts such as tubes, pipes, rods /bars. The equipment includes a base plate (110) holding a plunger (103), a wedge holder (102), a wedge (101) and a plurality of clamping pi...
This invention relates to a method of making of seamless tubes in cold drawing process. In the manufacturing of seamless steel pipes with cold drawing process, for making unconventional size of the tubes, the pointing die is not available and by suitable redesigning the drawing die, it can be used as pointing die by...
The present invention discloses a system (100) for tilting and holding a hemispherical dished end (600) of a heat exchanger. The system (100) comprises a circular ring (102), a plurality of ring supports (104) and a plurality of base structures (106). The circular ring (102) is configured to hold a hemispherical dis...
Disclosed herein a sealing arrangement to avoid mixing of lubricating bearing grease with gearbox oil in a three phase-phase induction traction motor for AC loco, the arrangement comprises a gear box (201), a pinion (202), a shaft (203), a rotating disc (204), a static bearing retaining cap (205), a gear (206), a do...
The present invention relates to a centrifugal compressor casing (14) casting. Casing (14) casting includes suction nozzle (1), variable circular type volute (4) and discharge nozzle (5) as single casting. For high suction flow applications, the casing casting is manufactured as a single component. For low suction f...
TITLE: IMPROVED SEALING ARRANGEMENT FOR SUPPORT BEARING ASSEMBLY
The present invention relates to the development of improved sealing arrangement for support bearing assembly for air preheater to reduce contamination of bearing lubrication oil inside the support bearing assembly. The support bearing assembly sea...
MANUFACTURING OF COMPOSITE INSULATORS FOR USE AS AN ELECTRICAL INSULATION STRUCTURE IN POLLUTED ENVIRONMENTS
The present disclosure relates to a process (100) for manufacturing of composite insulators having AC voltage rating of 25KV with a creepage distance of 1600mm that has three types of configurations which ar...
An apparatus and method of multiple pipe holding device and multiple pipe sizing in a horizontal pipe sizing band saw machine.
The present invention discloses an apparatus and method of multiple pipe holding device and multiple pipe sizing in a horizontal pipe sizing band saw machine. The device comprising top plat...
The present invention discloses a method and a holding device(100) for performing edge preparation of forged steel valves. The method comprises performing a milling operation in the casing(02) for locating a valve assembly(01). Tapped holes are defined in the valve assembly(01) for clamping the valve assembly(01) to...
Disclosed herein defines an assembly (100) for welding tubes in STB welding machine through TIG welding process comprising a T-shaped clamp (108) having a horizontal section (108-H) with a hemispherical slot (108-S) in a middle and a vertical section (108-V), wherein the top end (108-L) of said vertical section (10...
This invention relates to a method of machining of Seven Holes Venturi Nozzle for a Steam Generator. The Seven Holes Venturi nozzle is used as the flow limiters in the steam pipe which does not produce pressure fluctuations resulting steam pipe vibrations. The Seven Holes Venturi addition in Steam outlet nozzles is ...
ABSTRACT
TITLE: DEVELOPMENT OF IMPROVED STATIONARY SPOOL SEAL ARRANGEMENT FOR GUIDE BEARING ASSEMBLY OF AIR-PREHEATERS
The present invention relates to the development of improved sealing arrangement for the Stationary Spool Seal arrangement for Guide bearing assembly for Air preheater. The Guide bearing spool...
An apparatus (100) for holding boiler fittings during excess material trimming process on a band saw cutting machine, comprises a plurality of double grooved V blocks (9) are welded to at least one load supporting strips plate (10). A plurality of bolts (11) are attached to the base plate (12) and configured with ...
This invention relates to a method of welding in SA12A sub-assembly of Steam Generator.
In steam generator, Ferritic buttering for SA12A has been welding manually using SMAW process. The entire manual welding of joints creates more fatigue to the task of performing groups. It also invited a lot of defects in the jo...
The present invention relates to a 360-degree transition piece assembly fixture for heavy duty gas turbine comprising the following:
a singly structured piece 101 having a plurality of cavities 101A for accommodating multitude of transition pieces 102;a plurality of bull horn protrusions 108 in each of the cavitie...
This invention relates to a method for manufacturing a smaller diameter three-dimensional (3D) impeller of a centrifugal compressor by a Robotic TIG welding work cell for conducting external welding.
In the present invention, weld grooves are machined on the shroud part of the impeller. The profile of the weld groo...
The present invention relates to a compact and silent turbo-generator which utilises optimum space and emits less noise. The said compact and silent turbo-generator device equipped with a clamping plate with embedded fingers (06), end-shield mounted bearings (09), en-capsulated rotor coupling inside top pedestal, c...
Disclosed herein a fixture (100) for welding titanium tubes to titanium plates in shell and tube type heat exchangers, the fixture (101) comprises a first member plate (101), a second member tube (102) and a third member plate (103), a pair of cylindrical tubular connectors (104a, 104b) connected to the third member...
The present invention relates to a measuring apparatus (1) for the radial height measurement of a blade (100) or a vane (110) of a turbo-machinery. The present apparatus (1) is also enable to measure the blade-tip clearance. A top plate (10) atop a pair of vertical plates (20) is configured to define a top surface o...
A method for development and customization of the controller of Gravimetric feeder in coal-based power plants and process plants in disclosed. The system (100) includes a controller module (101) configured to receive various data and the control signals by means of a plurality of I/O modules (102), wherein the commu...
This invention relates to a method (100) for load testing of catheads comprising providing (101) a mounting fixture (8) for load testing of a catheads. Fixing (102) the bottom of the fixture (8) onto a T-slot of test bed for load testing of the catheads. Fixing (103) the cathead on to the fixture (8) with peripheral...
ABSTRACT
A TUBE BENDING CONNECTOR AND A METHOD THEREOF
The present subject matter disclosed herein relates to a connector (100) for connecting a first tube (101) with a second tube (102) to perform a bending process. It has a middle section (103) forming a plurality of segments (104, 105), wherein one segment (104...
The present invention is related to an optimization of a double bus hybrid Gas insulated Switchgear (HGIS) bay (100) configuration which comprises a horizontally/ vertically mounted gas circuit breaker [01] with bus multi-module [12] housing located on one end of a high voltage terminal and a feeder multi-module [25...
This invention relates to set-up and method for grinding excess weld of butt welding joints of water wall panel tubes.
The Set-up comprising pair of Tube loading with pinch roller means[600] maintaining gap there between for supporting the tubes[1] to be grinded, wherein assembly of bed[100], height adjustment m...
In this invention, inherent or induced magnetic properties in alloy steel tubes[T] is automatically removed prior to welding using Automatic and Intelligent Tube Demagnetizer Device. Designated locations anywhere along the tube can be demagnetized before welding using the device. The apparatus comprises of demagneti...
The present invention relates to an apparatus (300) to place a nozzle (101) on a separator pipe (201) of a steam generator, having the separator pipe (201) on roller supports (202), a plurality of plates (301, 302) placed over the separator pipe (201) at a distance, a plurality of supporting units (303a, 303b) posit...
This invention relates to a fixture for fit-up for welding of drum with plain dish and dish with nozzle of boiler to facilitate welding, comprising a top slab (1), a bottom slab and a side slabs (8) connected to a round type base plate (9) with the help of a hole for fixture, a joining parts holding bolt (4), and a ...
NO ABSTRACT
abstract uploaded
The invention relates to induction pressure welding is a process of joining steel
tubes by upsetting the tube - tube joint at a high temperature just below the
melting point of the material, to form a homogeneous structure. The solid state
inverter produces high frequency electricity which is used to drive a larg...
abstract uploaded
abstract uploaded
A process for protection of the heat transfer tubes from overheating / damaging
in a Circulating Fluidized Bed better (CFB Boiler) during sudden trip out of power
during boiler operation, comprising the steps of: calibrating stored water
inventory data In respect of utilization of water inventory in case of sudde...
This invention relates a rotary regenerative air preheater comprising a plurality of
heat transfer elements (01) a first element (01) having a first plurality of
longitudinal notches (03), and a first series of corrugations (02) inclined to the
first plurality of notches (03) in one direction, the adjacent profil...
The limitation of multichannel monolithic filtration modules for high filtration load
applications is addressed by new filter module of the present invention. A wider
flow channels at the retentate zone is visualized breaking away from the
conventional concept of circular or other symmetric or nearly symmetric
p...
Ceramic monolithic particulate filters for hot gas filtration and diesel particulate
filtration have issues of particulate accumulation and regeneration. The particulate
filter fabricated according to the present invention is capable of collecting trapped
particulates due to its inventive construction. A thin-wal...
A method of controlling distortion in a welding procedure of tension bars to each
of the two transition panels disposed back to back, the transition panels forming
a part of the water wall panel of supercritical boilers, and constituting a tubular
panel having a plurality of inter-connected tubes, wherein a plura...
A Phase Segregated Terminal Box (PSTB) assembly (301) for rotating electrical
machine comprising; plurality of terminal bushings in direct connection with
the connector assembly (305); at least a motor end connection terminated to
plurality of said terminal bushings (302) per phase; protective opening (317) on
b...
ABSTRACT
“RUPTURE DETECTION AND PROTECTION SYSTEM FOR WATER CONDUCTOR SYSTEM OF HYDRO POWER PLANTS”
This invention relates to Rupture detection and protection system for water conductor system(108) of hydro power plants.
The hydro power station comprising Upstream reservoir(100), HRT (head race tunnel), Sur...
The present invention relates to a regenerative braking system (100) for locomotive and DC traction systems, comprises a power circuit block having IGBT module (102), a plurality of AC contactors (112,114,116,118), inductors (L1,L2), front-end converter (128) with DC link capacitors (130), a plurality of DC conta...
ABSTRACT
‘A LIQUID COOLED STATOR FRAME FOR A ROTATING ELECTRICAL MACHINE’
This invention relates to a Liquid cooled Stator frame (100) for a Rotating Electrical Machine, comprising of a substantially cylindrical shaped body with hermetically sealed cooling circuit (103) formed between inner cylinder (101) and ...
ABSTRACT
IMPROVED HYDRO TESTING ARRANGEMENT FOR THIN TUBES OF HEAT EXCHANGER
The present invention relates to an improved hydro testing arrangement for thin tubes (101) of heat exchanger. The hydro testing arrangement comprises of Plug-1 (102), which connects between accumulator (107) and thin tube ID (101) wi...
ABSTRACT
‘A GRIPPER JAW ASSEMBLY USED IN THE COLD DRAWING PROCESS FOR MANUFACTURING SEAMLESS TUBES’
This invention relates to a gripper jaw assembly used in the cold drawing process for manufacturing seamless tubes. In the manufacturing of seamless steel pipes with cold drawing process, for making desired size...
ABSTRACT
‘A ROTOR SYSTEM FOR ARRESTING INDUCED STRESSES UNDER HIGH SHOCK AND VIBRATION CONDITION OF ELECTRICAL INDUCTION MACHINE’
This invention relates to a rotor system for arresting induced stresses under high shock and vibration condition of electrical induction machine.
Shock pulse creates very high ...
ABSTRACT
“HEAT TRANSFER ELEMENT PROFILE FOR ROTARY AIR PREHEATER WITH IMPROVED CLEANABILITY AND PERFORMANCE”
The invention relates to Heat Transfer Element Profile for Rotary Air preheater with improved cleanability and performance.
New operating condition of Air preheater requires better cleanability due t...
The present subject matter discloses a process to convert high ash Indian coal to ammonia by employing bubbling fluidized bed gasification method in which coal is gasified with blend of oxygen, carbon dioxide and steam to generate syngas which is cleaned from particulates, ammonia, carbonyl sulfide and hydrogen su...
ABSTRACT
ALIGNMENT FIXTURE FOR TEST SAMPLE TO ENSURE THE STRAIGHTNESS IN UNIVESAL TESTING MACHINE
This invention relates to sample alignment fixture for test samples to ensure the straightness of the samples in fracture/fatigue testing machine. The devise developed comprises of three parts including mounting b...
ABSTRACT
METHOD FOR WELDING VARYING TUBE DIAMETERS BY ORBITAL TIG WELDING
This invention relates to method for welding varying tube diameters by orbital tig welding. A new method of welding is established for the welding of RRP tubes and its safe end of different tube diameters of D1 (1) and D2 (2) respectively ...
ABSTRACT
AN ARRANGEMENT IN HYDRO GENERATOR / MOTOR SHAFT TO PREVENT BEARING OIL RISE
This invention relates to an arrangement in Hydro generator / motor shaft to prevent bearing oil rise, wherein guide pads (102) are circumferentially mounted on the shaft (103) and an oil vapour seal (104) is placed around the...
ABSTRACT
“UNINTERRUPTED FEED WATER SUPPLY SUBSYSTEM FOR CONTINUOUS OPERATION OF ELECTROLYSER”
This invention relates to Uninterrupted Feed water supply subsystem for continuous operation of Electrolyser comprises of electrolyser system (1) which is in communication with DC power supply (2) to supply the rated ...
ABSTRACT
A METHOD FOR DETERMINING DISTORTION AND DIMENSIONAL ACCURACY IN WELDING AND ADDITIVE MANUFACTURING
The invention is related to method and process to obtain and measure the distortion and buckling profile of the plate and sheet respectively after welding and measurement of dimensional accuracy in addit...
ABSTRACT
‘METHODOLOGY AND ARRANGEMENT FOR UNIFORM EXPANSION AND SAFE EXTRACTION OF LARGE SIZE INTERFERENCE FIT BEARINGS’
This invention relates to methodology and arrangement for uniform expansion and safe extraction of large size interference fit bearings comprises of fixture assembly and hydraulic jack (8) w...
Improved Mandrel Bar Stopper To Avoid False Crimping At Crimping Line In Seamless Steel Tube Process
ABSTRACT
IMPROVED MANDREL BAR STOPPER TO AVOID FALSE CRIMPING AT CRIMPING LINE IN SEAMLESS STEEL TUBE PROCESS
The invention relates to Mandrel Bar Stopper modification to avoid false crimping at Crimping line in a Seamless Steel Tube manufacturing, implemented in a Crimping Line system having a modified retra...
ABSTRACT
‘AN IMPROVED LOW NOX OIL AND GAS FIRED BURNER’
This invention relates to an improved Low Nox oil and gas fired Burner comprises of Gas chamber [1], Primary air drum assembly [2], secondary air drum assembly [6], oil gun assembly, Gas pipe igniter assembly [12] and burner throat, wherein air from wind ...
The present invention provides a method for preparation of additive/filler for better thermal conduction/thermal dissipation in electrical machine, the method comprising adding a required percentage of functionalization agent like silane coupling agent ((3-Glycidyloxypropyl) trimethoxysilane (GPS)) with Isopropyl al...
ABSTRACT
TEST BENCH FOR TESTING COMPACT HYDRAULIC VANE PUMP AND MOTOR UNIT
This invention relates to test bench for testing compact hydraulic vane pump and motor unit. A pressure control means is present so as to control outlet side of pump pressure at predetermined level. Thus depressurized fluid is collected...
ABSTRACT
‘METHOD FOR IMPROVING SYNTHESIS GAS QUALITY IN OXY-BLOWN FLUIDIZED BED GASIFICATION PROCESS WITH PETROLEUM COKE’
The invention is directed to Method for improving synthesis gas quality in oxy-blown fluidized bed gasification process with petroleum coke.
The present invention provides the method fo...
ABSTRACT
“IMPROVED HW-GTAW PROCESS FOR PRODUCING DISSIMILAR MATERIAL TUBE BUTT JOINTS OF SUPER ALLOY 617 AND 740H”
This invention relates to an improved HW-GTAW process for producing dissimilar material tube butt joints of solid solution strengthened Nickel based super alloy 617 and precipitation hardened nick...
ABSTRACT
AN IMPROVED SOLUTION TO RETROFIT A 4-PASS VERTICAL CHANNEL-UP TYPE LOW PRESSURE HEATER HAVING CUPRO-NICKEL TUBES
The present invention relates to Low pressure feed water heater used in thermal power stations for preheating feed water.
It proposes an improved retrofit design using stainless steel tube...
ABSTRACT
‘A BEARING ASSEMBLY DEVICE FOR HANDLING OF HEAVY ANGULAR BEARING’
The present invention relates to a Bearing Assembly Device for Handling of Heavy Angular Bearing comprising of a clamp (1) connected to Eye bolt (2), wherein the clamp (1) is a single piece, which is having substantially U-section, in w...
ABSTRACT
TITLE: A SYSTEM IMPLEMENTING DIGITAL TWIN OF A MOTOR FOR CONDITION MONITORING
The present disclosure relates to a system (200) implementing a digital twin of an electric motor (100) for monitoring live temperatures of a stator and a rotor of the electric motor (100). The system (200) comprises of an in...
The present subject matter discloses a method of gasification of high ash Indian Coal in a high pressure oxy-blown fluidized bed coal gasifier (105, 106) comprising the steps of crushing of coal, sieving of crushed coal, transporting the crushed and sieved coal from coal feeding system (101) comprising of locks, hop...
ABSTRACT
TITLE: A TUBE NEST ARRANGEMENT FOR A TWO-PASS, CIRCULAR AXIAL STEAM CONDENSER
The present invention relates to a tube nest layout of axial circular two-pass steam condenser for power plant or chemical plant application. The invention discloses an optimized tube nest layout for a two-pass circular conden...
ABSTRACT
TITLE: A SYSTEM PROVIDING HERMETICALLY SEALED FIBER ROUTING ARRANGEMENT OF HIGH VOLTAGE OPTICAL CURRENT TRANSFORMER
The present invention relates to a system (100) providing hermetically sealed fiber routing arrangement of high voltage optical current transformer (OCT). The present invention disclosed t...
ABSTRACT
‘A SWIVEL ASSEMBLY FOR BURNER TIPS IN PULVERIZED COAL FIRED BOILERS IN THERMAL POWER PLANT’
This invention relates to a Swivel assembly for burner tips in pulverized coal fired boilers in thermal power plant. Primary objective of the invention is to provide a smooth operating mechanism to establish a ...
ABSTRACT
‘EXTENDED LIFE COAL NOZZLE TIP FOR TANGENTIAL COAL FIRED BOILERS’
The present invention relates to Extended life coal nozzle tip for tangential coal fired boilers comprising assembly of primary air casing, secondary air casing, stiffener plates and divider plates.
The invention enhances the tangent...
The present invention provides an assembly (500) for high temperature superconducting (HTS) synchronous machine, the assembly (500) comprising a stator assembly (100) having an air core stator (101) including a multi-layer multi-phase stator winding (102) supported by a non-magnetic core fastened on a magnetic shiel...
The present invention provides a process (300) for simultaneous recovery of a metal and metal oxide by electro-winning which can be performed by using an acidic solution containing salts of the two metals to be recovered and by using an insoluble cathode and anode; by optimizing the spacing between the two electrode...
The present subject matter discloses a method of copper plating on mild steel substrate from a non-cyanide based electrolyte comprising the steps of preparing the electrolyte bath; preparing the surface of substrate; plating of the substrate; treating of the substrate and drying the substrate, wherein the electrolyt...
ABSTRACT
‘SET-UP AND METHOD FOR INTERNAL DIAMETER CENTERED, OUTER DIAMETER POLISHING OF TUBE ENDS IN TUBE BUNDLES’
This invention describes a technique for carrying out inner surface aligned centered polishing of outer surface of tubes present in a tube bundle, where polishing of outer surface is mandated, pri...
Power Operated Device To Isolate Flow Of High Pressure And Temperature Steam Through Main Steam Line
ABSTRACT
‘POWER OPERATED DEVICE TO ISOLATE FLOW OF HIGH PRESSURE AND TEMPERATURE STEAM THROUGH MAIN STEAM LINE’
The present invention discloses a Power operated device to isolate the flow of High Pressure and High Temperature Steam through main steam line. More particularly, the invention relates to a Power op...
ABSTRACT
‘IMPROVED BLAST DISTRIBUTION SYSTEM FOR UNIFORM DISTRIBUTION OF BLAST IN UPDRAFT FIXED BED GASIFIER’
This invention relates to an improved blast distribution system for uniform distribution of blast in updraft fixed bed gasifier comprising of Ash Zone(1), Oxidation zone(2), Reduction zone(3), pyrolysi...
ABSTRACT
AN AUTOMATIC DEVICE FOR CUTTING PIPES USING GAS CUTTING OPERATION AND EDGE PREPARATION OF PIPES
This invention relates to an automatic device for cutting pipes of different diameter and length by using gas cutting operation along with edge preparation of thin wall pipes (upto 14 mm). An automatic oxy-acet...
ABSTRACT
TITLE: SPRAYING NOZZLE ASSEMBLY FOR PNEUMATIC PRESSURIZED SYSTEM SUCH AS ELECTROSTATIC DISINFECTION UNIT
The present invention relates to a spraying nozzle assembly (100) for pneumatic pressurized system such as electrostatic disinfection unit for spraying at a head above a liquid level. The spraying no...
ABSTRACT
A METHOD OF WELDING FOR BI-METALLIC FORGINGS OF TURBINE ROTOR IN THREE PARTS
This invention relates to a method of welding for bi-metallic forgings of turbine rotor in three parts, wherein the three parts include one part of Alloy 617M forging between two parts of 10Cr Steel forging, in which the meth...
ABSTRACT
AN EQUIPMENT FOR NON-CIRCULARITY CORRECTION IN PIPES IN ANY ORIENTATION (360°)
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The invention relates to an equipment for non-circularity correction in pipes in any orientation using hydraulics which compr...
ABSTRACT
TITLE: AN APPARATUS AND METHOD FOR HOLDING A FUEL PIPE HORIZONTALLY IN A RADIAL DRILLING MACHINE
The present disclosure relates to an apparatus 100 for holding a fuel pipes horizontally in a radial drilling machine. The apparatus 100 comprising a frame, which includes a base 204, a center support pla...
ABSTRACT
METHOD FOR PLACING AND SELF-CENTERING OF I.P. INNER CASING ON TURN TABLE
This invention relates to a method for placing and self-centering of intermediate pressure (IP) inner casing on turn table comprising steps of:
- placement of an irregular job on a reference/base plate [B];
- marking of referen...
The present subject matter discloses an apparatus for detecting interface bonding defects in silicone rubber composite insulators. The present system includes an immersion tank that holds the insulator and an ultrasonic transducer that is used to generate and receive ultrasonic waves. The immersion tank is filled wi...
The present invention relates to an auto thermal chemical looping gasification method. The carbonaceous feedstock is partially oxidized by employing oxygen carrier and steam to generate syngas which primarily consists carbon monoxide and hydrogen. The unburnt carbon at the exit of fuel reactor is separated in the ca...
The present invention relates to infrared rays (IR) heated chemical processing system. This invention discusses the use of infrared heating and magnetic stirring in chemical baths. Chemical baths are widely used in solar cell manufacturing, for a variety of purposes such as cleaning, etching, and texturisation. Achi...
ABSTRACT
TITLE: A ROTATING SPARK GAP SYSTEM WITH A BOW-TYPE INSULATING DISC FOR HIGH-VOLTAGE SWITCHING APPLICATIONS
The present invention relates to a rotating spark gap system (300) comprising, a bow type insulating disc (300-9), having a pair of rotating spark gap electrodes (300-11) mounted diametrically opposit...
The known technique takes more time, requires more man power, more Oxygen, Acetylene to be consumed and also increases operator fatigue. This can be resolved by using a more robust and sturdy hydraulic pressing machine for profile formation of angles and channels. They have a higher throughput and can make the desir...
ABSTRACT
AN APPARATUS FOR MOUNTING A PLUNGER
The present subject matter disclosed herein relates to an apparatus (200) for mounting a plunger (06) in hydro testing of valves. The apparatus (200) comprising of of channels (25a, 25b), wherein a top side of the channels (25a, 25b) is fitted with a square plate (18) to ...
The present subject matter disclosed herein relates to an apparatus (600) and a method for manufacturing of slot wedges in a turbo generator. The apparatus (600) has a base plate (100) having grooves (200, 300) for holding a slot wedge parts T and P (701, 702) in a longitudinal direction, wherein the the slot wedge ...
ABSTRACT
TURBINE COOLING ARRANGEMENT
The present subject matter disclosed herein relates to a turbine cooling arrangement 100 for turbines operating at above ultra supercritical steam parameters to enhnance the creep life. The said arrangement 100 comprising of mixing of a hot steam flow 102 and a cold steam flow...
The invention relates to method of manufacturing seamless steel tubes with coated piercing plugs. The piercing plugs(1) are coated with high wear and heat resistance material(2) by welding to improve life of piercing plugs. The plug is attached at one end of a long mandrel and other end of mandrel is fixed on ...
The invention relates to an apparatus for drilling holes in inside surface of a pressure vessel at the intersection area of nozzle. The apparatus comprises of a bottom plate with circular shape which is welded to extension stem. The locator having outside profile matching with the inside profile of nozzle seats insi...
The present subject matter discloses a system for co-firing biomass with coal as fuels in thermal power plants based on tube and ball mills appended with the existing power plants. The system comprising a plurality of crushed coal bunkers (2, 3, 4, 5), plurality of coal feeders (6, 7, 8, 9) connected to bottom of bu...
A system (100) and a method for demagnetizing an electromagnetic clutch assembly (12) in machine tools comprises a demagnetization device (22), having an intermediate relay (10) connected to an output of a control transformer (20). A timer controller (18) connected with a coil of the electromagnetic clutch (12). Th...
The invention is related to Semi-automatic MIG welding machine for longitudinal structural fabrications.
The present invention has been proposed for replacing manual welding process by semiautomatic MIG welding movement mechanism in boiler structural components. Particularly the present invention relates to the desi...
The present invention relates to a handy and light-weight arrangement that is capable of storing and feeding the discarded bits. A holder (10) is fabricated from stamped sheetmetal to achieve adequate stiffness. A leaf spring (26) retains the stored electrodes intact. A friction wheel (14) helps to feed the stored e...
This invention relates to High pressure feed water heater[1] for partloads in thermal power plants comprises of: a shell[2] and a Hemi head[3] including a tube sheet[4] and forming a water chamber[5], wherein the water chamber[5] is divided into two portions by partitions[6,6a] forming inlet water chamber and outlet...
ABSTRACT
TITLE: A PRIMARY CURRENT CARRYING CONDUCTOR WITH A DOUBLE POLYMER INSULATOR FOR A 220 KV CURRENT TRANSFORMER
The current invention discloses a double polymer insulator (104) 220 KV dead tank current transformer (100) comprising a plurality of layers of polymer insulators (104) suspended from an elliptical b...
Any type of Steam Generators and Heat Exchangers contain a large shell and many tubes. A fluid stream passes through the tubes, and another stream passes through the shell to trade heat energy. The ring assembly (Top frame ring & Bottom frame ring) is used to hold the Stainless Steel Grid flats between the ring asse...
The present subject matter discloses an improved testing apparatus and a method of measuring the viscosity of a sample resinous solution at a controlled desired temperature. The viscosity test facility, with the present apparatus and digitally monitored ‘Temperature control Bath’ to test viscosity of resinous matter...
This invention relates to a Device (10) for accurate centering and setting of hollow cylindrical component (30) over shaft (20) of Hydro Pump of Lift Irrigation scheme.
The device comprises a ring assembly (1) of two semicircular halves connected to each other at both ends by fasteners (4,5). The ring assembly is p...
This invention relates to apparatus to simulate underwater welding for training which is pressure vessel. The vessel comprises cylindrical portion, bottom end cover(13) and hemispherical dished end(4) on the top provided with a hatch(6) with airtight cover. The vessel contains monkey ladder(2), circular banister(5) ...
ABSTRACT
A METHOD FOR MANUFACTURING A CAST FABRICATED IMPELLER RUNNER WITH SPLIT BLADES
The present subject matter disclosed herein relates to a method (100) for manufacturing a cast fabricated impeller runner (101) with split blades (201). The method comprising steps of splitting (101) impeller blades (104) into tw...
The present invention relates to Method of manufacturing of hemi spherical dished end by fully machining process involving the following:
-Pre –drilling and rough boring operation in hollow forging raw material;
-Stock is maintained during both pre-drilling and rough boring operation by using vertical lathe machi...
ABSTRACT
A DEVICE FOR REDUCING PRESSURE DROP IN A HOT AIR DUCT
The present subject matter disclosed herein relates to a flow measuring device (100) for reducing unrecoverable pressure drop in a hot air duct due to presence of cylindrical tubes. The device (100) comprising of a hollow housing (1) inside the hot air d...
This invention relates to a Fixture for machining seal body of a large size turbo generator constitutes a semi- circular piece having two faces [A, B], each of which comprising of a slot [1] and a stopper collar [2], in which the collar [2] fits into T-slot of a standard machine table and automatically aligns the jo...
The present invention relates to a method and fixture for glass laminate components manufacturing by securing the jobs in cushioned cutout length 34 for the stud jobs and round nut jobs over the holding means 40, configuring a plurality of spring based tightening mechanism 22, 25, 26 to absorb the machining loads f...
The invention relates to steam cooling for balance piston of single flow intermediate pressure steam turbine and a method thereof.
The steam cooling for balance piston of a single flow intermediate pressure steam turbine preferably includes positioning a balance piston [31] adjacent inlet of an intermediate pressur...
This present invention describes a procedure for quick transition from a fine mesh containing smaller sized 3D hexahedral elements into a coarse mesh made of relatively larger sized 3D hexahedral elements, using transition pattern called ‘Bi-Directional Torch’ (BDT) (figure 3). The BDT contains two one-directional t...
The invention relates to system to monitor and control Electrostatic Precipitator functions using redundant communication. A system A system for interfacing signals between an ESP control panel and an ESP field using ZigBee Pro and CAN protocols by replacing cables running between them, the system (100) comprises of...
ABSTRACT
AN APPARATUS FOR HOLDING VORTEX PLATES INSIDE A STEAM GENERATOR
The present subject matter disclosed herein relates to an apparatus (500) for holding vortex plates (101a, 101b, 101c) to be welded in a steam generator. The apparatus (500) has an outer frame (401) having a plurality of sides (402a, 402b, 402c...
ABSTRACT
A METHOD OF PREDICTING SHAPE OF BENDING DISTORTION OF A LONG WELDED STRUCTURE
The present subject matter disclosed herein relates to a method (300) of predicting shape of bending distortion (105, 106, 111, 112, 115) of a long welded structure (101) comprising a plurality of welds located either above or bel...
ABSTRACT
“METHOD FOR USING CO2 WELDING TORCHES IN WELDING FOR OBTAINING MORE FILLET DEPOSITION AND AN APPARATUS OF DOUBLE TORCH HOLDING UNIT”
The invention of this new methodology of utilizing two CO2 welding torches involved in welding at the same time in same location maintaining common welding pool for obtaini...
ABSTRACT
‘VIBRATION ISOLATION SYSTEMS (VIS) TEST SETUP WITH MECHANICAL EXCITER’
The invention relates to Vibration isolation systems (VIS) Test setup with Mechanical Exciter. The mechanical exciter comprises of motor (10) and special gear arrangement (34, 35, 36, 37) for generating the unbalance force of desired m...
In this invention, frequently occurring failures in three-phase inverter-based machines, especially high-power induction heaters, due to voltage fluctuations, specifically over-voltages and under-voltages, in gate driver circuits is avoided by sensing the underlying abnormalities before they occur. A protection devi...
ABSTRACT
‘A REVOLVING PULSE JET CLEANING SYSTEM FOR CARTRIDGE TYPE FILTER ASSEMBLY SUPPORT’
Considering the day to day reduction in filter life in bag filter system, air filtration system or cartridge type filters, the effective cleaning must be implemented for the complete detachment of dust particles from the me...
The present invention relates to an optimized ventilation circuit (100) for fixed speed motor alternator set comprises an alternator rotor (002) and a motor rotor (003) assembled on a common shaft (001). Two identical backward curved profile fans (006,007) are placed between the alternator rotor (002) and the moto...
ABSRACT
“ACOUSTIC ABSORPTION CELL STRUCTURE FOR REDUCING NOISE THROUGH ABSORPTION”
This invention relates to acoustic absorption cell structure for reducing noise through absorption. The cell structure comprises of a base frame (201) and an acoustic absorption material lining (202), wherein the base frame (201) i...
To overcome frequently occurring failures in welding machines due to accumulation of dust on the internal components and fault or welding return current due malfunction or improper connection and loose contact in welding terminals is avoided by sensing the underlying abnormalities before they occur a protection dev...
ABSTRACT
‘SUPPORT MECHANISM TO MACHINE EXTREMELY SHALLOW SIDE GROOVING FOR STRAIGHTER PROPAGATION OF CRACK’
The present invention relates to a mechanism used as a support to facilitate slot cutting (side grooving) of approximately 0.25mm deep in line with the notch using Electric Discharge Machining (EDM). The sl...
A device (100) for hot spot temperature measurement on traction motor rotor using radio telemetry system comprises a shaft (1) of the traction motor is assembled to route sensors cable from locations of temperature sensors. An adaptor (2) is configured for fixing on the shaft (1) and comprises a screw thread to fix ...
The present invention relates to a highest rating squirrel cage induced draught (ID) fan motor for ID fan in power plant comprises a side cover (1) which houses a wound stator assembly (6) and a rotor assembly (2). The wound stator assembly (6) is configured on a pedestal (5) which acts as base frame and is affixed...
The present subject matter discloses a surface coating for high strength steel products and substrates comprising Chromium carbide powder comprising 75% of chromium carbide, 20% of Nickel (Ni), 5% of chromium (Cr) and Multi-walled carbon nanotubes (CNTs) powder, wherein the Chromium carbide powder and Multi-walled c...
The present subject matter discloses a compact and automatic interlock system comprises a gas flow sensor to sense and measure the flow rate of gases, an inlet hose for gas inlet, an outlet hose for gas outlet, electromagnetic relays for activation and de-activation of the system, indication lamps for visual signifi...
ABSTRACT
“RESTRAINER ARRANGEMENT WITH HINDRANCE AND DIVERSION COURSE ON INTERFACE OF TRACTION MOTOR AND ITS DRIVE END GEAR ENCLOSURE”
Restrainer arrangement(020) with hindrance and diversion course on interface of traction motors and its drive end enclosure(001), wherein the Restrainer arrangement(020) compris...
ABSTRACT
“FIXTURE ASSEMBLY DEVICE FOR WELDING OF WORK PIECE WITH CARRIER PLATES AND A METHOD FOR FIXING THEREOF”
The Fixture assembly device for welding of work piece with carrier plates comprises of work piece (01) with a carrier plate/lug plate (02) at top and bottom part thereof, wherein work pieces (01,02) are...
ABSTRACT
“METHOD TO REMOVE FLY ASH FROM REAR ARCH FLOOR TO SECOND PASS FOR TWO PASS DESIGN BOILER”
The invention relates to method to remove fly ash from rear arch floor (7) to second pass for two pass design boiler comprising steps of:
- flow of the flue gas vertically in first pass (1) followed by taking a tur...
A test rig (100) having one main ducting line (DL) fitted with multiple fans (FA-1, FA-2) and connected with a bypass line (BL) and photo catalyst line (CL) fitted with suitable dampers (D1, D2) to regulate the air flow. Multiple air filters (F-1, F-2) fitted on each branching line to remove particulate matter befo...
ABSTRACT
“AN APPARATUS FOR FULLY AUTOMATIC GAS CUTTING OF HIGH THICKNESS PIPES OF VARIANT DIAMETER AND METHOD OF GAS-CUTTING”
This invention relates to an apparatus for fully automatic gas cutting of high thickness pipes of variant diameter and method of gas-cutting.
The apparatus comprising of torch assembly (06...
The bus bars belonging to three phase bus duct system are optimally arranged in rectangular and circular enclosures to reduce over-all losses. The three phase bus duct system configuration with bus bars belonging to only one phase of three phases are arranged in line with each other and bus bars belonging to other p...
An improved stiffening arrangement for ash hoppers to withstand high ash load in economizer
duct of large capacity CFBC boilers comprising incorporating a plurality of horizontal stiffeners
(5,8) and a plurality of vertical stiffeners (7,9) on the 8 faces of the hopper along the view P
as well as along the view S...
This invention relates to an apparatus for the temperature and pressure measurement of downstream (draft tube) water for Efficiency measurement by Thermodynamic Method in hydroelectric projects comprises of:
a Pipe header(A), special plates(B) and piping(C), wherein the Pipe header(A) is having provision for mounti...
ABSTRACT
‘DISCHARGE ELECTRODE MATERIAL AND METHOD OF MANUFACTURING THEREOF FOR DRY ELECTRO-STATIC PRECIPITATORS IN POWER GENERATION SECTOR’
This invention relates to Discharge electrode material and method of manufacturing thereof for dry electro-static precipitators in power generation sector. These electrost...
ABSTRACT
MECHANISED SYSTEM FOR ANALYSING DIFFUSIBLE HYDROGEN CONTENT IN FLUX CORED ARC WELDING PROCESS
The steel molten weld metal will observe enormous amount of hydrogen from environment. After solidification and cooling, observed hydrogen cannot be retained inside metal. Hence, part quantity of hydrogen wil...
ABSTRACT
TITLE: MACHINE ORIENTED LEARNING APPLICATION (MOLA) FOR MACHINE TOOLS, INDUSTRIAL INSTRUMENTS, AND PROCESS PLANTS
The present invention relates to a system (10) using a machine oriented learning application (MOLA) for organizing and monitoring a variety of assets used in industrial applications comprising...
ABSTRACT
‘A METHOD FOR MANUFACTURING OF PNEUMATIC FORGED STEEL GATE VALVE WITH FLEXIBLE WEDGE FOR HIGH TEMPERATURE AND LOW PRESSURE APPLICATIONS IN THERMAL POWER PLANTS’
The present invention relates to a method for manufacturing of pneumatic forged steel gate valve with flexible wedge for high temperature and lo...
TITLE: A PROCESS FOR DIMETHYL ETHER (DME) PRODUCTION
FROM CO2 AND HYDROGEN
10
The present invention relates to a method for achieving direct DME product with 98
% purity using CO2 and H2. The DME purification step involves Separating CO2 and
H2 using Methanol as a solvent as well as recovering methanol from met...
TITLE: A METHOD OF FABRICATING MULTIAYER COATING ON
ALUMINUM MESH FOR AN IMPROVED AIR TREATMENT
The present subject matter discloses a method to fabricate filters coated with a
photocatalytic powder using an alkali silicate binder. The present method is a
unique and effective way to coat a photocatalytic powder ...
ABSTRACT
A STATOR ASSEMBLY FOR HIGH TEMPERATURE SUPERCONDUCTING SYNCHORNOUS MACHINE
The present subject matter disclosed herein relates to a stator assembly (901) for a high temperature superconducting (HTS) synchronous machine. The stator assembly (901) has a stator core (101) having multiple sectors assembled to...
For critical applications, forged barrel casing is preferred for reasons of safe and defect free casing material over casted casing, even though casted casing is simpler, cheaper, ease of maintenance due to less components. Barrel casing [1], kind of thick cylinder, encompasses double flow volute casing called inner...
The present invention relates to a fixture for bending the heated plate to
predetermined angles during the manufacture of plate lifting clamps, comprising:
- a solid structure including a base plate (1), side support plates (2) with
lifting eyes (10), stopper guide mounting structure and job clamping
mechanism...
In the existing Magnetic Particle Inspection (MPI) equipment for inspection of cracks in valve bodies we need to do minimum two times of physical clamping & de-clamping of the current cable connections in the valve body. This leads to more time consumption and material handling during MPI testing.
The Magnetic clam...
Double flow volute diffuser casing is widely used to balance radial thrust load on rotor of centrifugal pumps. Outlet of one of volute of double flow volute casing faces to discharge nozzle[5] while second outlet is at 180o periodicity to first outlet. Outlet of first volute directly enters into to discharge nozzle ...
This invention relates to a fixture (F) for machining a terminal box (W, J) of a large size turbo generator comprising of a base plate 1 having extruded longitudinal tenons and a plurality of key slots 6 on said base plate to bed, angle blocks 2 and support jack 5 placed on the base plate 1 to support the load of th...
This invention relates to Structural means (D) for obtaining accuracy in manufacturing of spring of large size turbo generator comprising of:
- a base plate 100, top face of which is provided with grooves 200 for holding ring 800,
- plurality of rectilinearly arrayed holes 240 disposed on corners of the base plat...
Arrangement To Prevent Leakage Of Ash From Super Critical Steam Generator Based Thermal Power Plants
This invention relates to Arrangement to prevent leakage of ash from super critical Steam Generator based thermal power plants.
The arrangement helps in arresting ash leakages from steam-cooled sidewall cum roof panel intersection areas, roof panel expansion bellow areas, rear arch panel and extended pass interse...
The present subject matter disclosed herein relates to a sample mounting and rotating fixture over which a sample could be mounted and the mounted sample could be rotated for putting it for scanning electron microscope (SEM) observation. A sample mounting and rotation fixture (100) for use in scanning electron micro...
abstract uploaded
This invention relates to arrangement using pivot bars for adjustment of guide pad clearance between shaft journal and guide bearings for hydro generator comprises of Shim (3), Pivot bar (2) and screw (6) which are used for the guide bearing arrangement.
This arrangement has many advantages including reduction in ...
The invention relates to an improved fixture for cutting large diameter openings in plates and pipes using a gas flame up to 7 metres. The apparatus(100) comprises of a main rod (4), a torch assembly(17) connected to the main rod (4),a main clamp (1) attached to the main rod (4) for securing the torch assembly(17),...
The present invention relates to system for cooling and humidification of Proton Exchange Membrane Fuel Cell (100). The system (100) comprises a turbo compressor (24), control (16), temperature/pressure device (25), candle humidifier (17), fuel cell stack (1), water management system (8, 9, 10, 11, 12), controller u...
The invention relates to a method for assessing the local post weld heat treatment (PWHT) of metallic pipes using nomograms. The method comprises of generating two nomograms: the first for evaluating Through-Thickness Temperature Gradient (TTG), and the second for determining power source requirements. These nomogra...
The present invention relates to a shell and tube heat exchanger with tube bundles (100). The heat exchanger (100) comprises of a conical shell (1) for gas flow, an outer shell (2), an outlet port (3) for gas outflow, an inlet header (4), a plurality of steam tubes (6) for heat transfer, a plurality of sub-headers (...
The invention relates to Maintenance-free Optical Current Transformer (OCT) with solid core insulator comprising of:
(i) High Voltage part,
(ii) Insulator part and
(iii) Low Voltage part / ground side part;
Wherein the insulator part is placed between the High Voltage part and Low Voltage part/ ground side part...
The invention relates to a system and a method for protecting the welding machine from stray current failures. The system (100) for protecting welding machines from stray current failures comprises a cuboidal enclosure (1) for housing, a front-facing display unit (2), and a control unit (6) for monitoring and operat...
The invention relates to a milling cutter holder by means of their especially smaller milling cutters on the inner conical spindle head of a machine tool exclusively using a receiving dome penetrating the milling cutter from the front axially and at the same time in a centering manner and a longer clamping screw pen...
This invention relates to Multi-phase electrical machines comprises of Windings /connection rings placed on both sides of stator core inside the stator frame by aligning the center of stator core with the center of bearings.
Ending bars of winding sets/few phases are connected to neutral rings on one side and starti...
The present invention relates to a method for optimizing the sizes of Absorber Casing Panels. The method (100) involves constructing panels through the welding of clad plates with a frame, where the overall dimensions are adjusted without cutting the clad plate. By modifying the site joint of casing panels and exten...
The invention relates to a system and a method for mixing shielding gases in Gas Tungsten Arc Welding (GTAW). The system (100) comprises of a plurality of gas cylinders (1, 2) for storing different gases; a plurality of gas regulators (3) attached to each cylinder to control gas pressure; a gas alternator (4) with t...
An additive-modified epoxy-resin composition with improved FIRLS (fire
retardant and low smoke) characteristics for various high voltage applications
specifically targeted as transformers is disclosed by incorporating an identified
additive formulation comprising i) nanostructured alumina (2-5 parts by volume),
...
In nuclear heat exchanger, large diameter hemispherical dished end with nozzles through holes with different diameters and projection, is critical job to handle during its manufacturing processes.
Due to requirement of job handling, the job needs lug supports on its outer peripheral body plane that needs to be used ...
The present invention relates to a DC drive at a stretch reducing mill of seamless steel tube process integrated with a cooling system comprising a power distribution arrangement comprising AC bus bar (204) and DC bus bar (206) , an air duct (406) positioned behind the bus bars (204,206) for providing air passage to...
The invention relates to electromagnetic damper(501) for rotor of High Temperature Superconducting (HTS) machine which helps in providing self-start feature to the machine along with maintaining the high degree vacuum in the rotor. The HTS synchronous machine has stator having multi-phase windings placed in non-mag...
The present disclosure relates to a process to improve the corrosion resistance of compressors casings for syngas applications, the process comprising steps of selecting a mixture of Nickel based super alloy powders wherein one powder is equivalent to Hastelloy C276 and another powder is equivalent to Inconel 718, t...
This invention relates to Motorized trolley used for shifting of Transformer coils from one to another working station comprising a plurality of slewing bearings (2) connected with the output of motor (5, 6) through gear which rotates the trolley as per command given for left / right movement, wherein the trolley is...
This invention relates to optimized system to monitor and track consignments during transit for long duration.
Consignment Tracking System (CTS) is developed for monitoring physical movement of vehicles carrying important consignments between source and destination which can work for 1-3 months on its own battery wi...
This invention relates to Partial Discharge Measurement device for high voltage substation equipment comprises a Partial Discharge(PD) sensing unit constituting inductive Partial Discharge(PD) sensor(1), a Partial Discharge(PD) coupler for connecting/installing the sensor(1) to the test object and the associat...
ABSTRACT
‘A device for holding a stem during the heat treatment process of spray valve stem’
This invention provided a sigma hook device for holding the stem and to hang it down to the furnace during the heat treatment process in the manufacturing processes of stems used in spray valves. The device comprises of ...
The invention discloses an improved apparatus (D) designed for precision in manufacturing connection pieces and valve blocks for large turbo generator. The apparatus features a base plate (100) with longitudinally extending milled grooves (200, 300) for securing the connection pieces and valve blocks. Keyed assembly...
The invention relates to a non-destructive evaluation method and system for Low pressure (LP) turbine blades using vibro-thermography. The method involves securing the LP steam turbine blade to a specialized fixture with a wooden base, ensuring stability. A pneumatic piston is employed to establish contact with the ...
The invention relates to a method (100) for the production of Ammonium Nitrate and Methanol from coal. The syngas, generated through coal gasification powered by green energy, undergoes purification steps to remove impurities like particulates, hydrogen sulfide, and CO2. Utilizing an electrolyzer, the captured CO2 i...
The present invention relates to Solid State Circuit Breaker (SSCB) (200) that is achieving minimal voltage overshoot across the switches without using Metal Oxide Varistor (MOV).
The SSCB (200) with two switches (S1, S2) in series consisting of two diodes (D1, D2), two capacitors (C1, C2), two voltage equalizing re...
ABSTRACT
A NOVEL PROCESS TO CONVERT A CARBONACEOUS FEEDSTOCK INTO AMMONIA THROUGH AUTO THERMAL CHEMICAL LOOPING GASIFICATION METHOD
This technology involves converting a carbonaceous feedstock into syngas using autothermal chemical looping gasification, eliminating the need for external heat to drive endothermic g...
ABSTRACT
AN APPARATUS AND METHOD FOR BENDING HASTELLOY LINING CLAD SHEETS IN FGD CASING AND DUCTS
The present invention relates to an apparatus (100) and a method for bending Hastelloy lining clad sheets in FGD casing and ducts. The apparatus (100) for bending Hastelloy lining clad sheets in FGD casing and ducts inc...
A MEDIUM VOLTAGE ELECTRICAL BUSHING FOR INSULATING MEDIUM VOLTAGE CONDUCTOR AND METHOD OF PREPARATION THEREOF
The present invention relates to a medium voltage electrical bushing (100) for insulating medium voltage conductor and a method (300) of preparation of medium voltage electrical bushing for insulating mediu...
This invention relates to Process for preparing thermosetting polymer with improved thermal transfer characteristics for better thermal/heat conduction/heat dissipation, thereby electrical machine in particular Axial Flux Permanent Magnet Electrical Machine (AFPM) which has a rotor with a rotary shaft, a stator surr...
ABSTRACT
“AUTOMATIC DISCONTINUOUS SPIRAL FIN WELDING IN HIGH FREQUENCY RESISTANCE WELDING MACHINE IN SEAMLESS STEEL TUBE PLANT”
The invention relates to Method of automatic discontinuous Spiral Fin Welding in High Frequency Resistance Welding Machine in Seamless Steel Tube manufacturing plant.
It includes sensor ...
“METHOD FOR REAL-TIME ELEMENTAL QUANTIFICATION OF WELDING FUMES USING CAPTURED FLOW FIELD IMAGES”
This method transforms welding processes with real-time elemental analysis. Utilizing spectral imaging algorithm on captured flow fields of the welding fumes, it swiftly identifies and quantifies various chemical forms...
Any type of Steam Generators and Heat Exchangers contain a large shell and many tubes. A fluid stream passes through the tubes, and another stream passes through the shell to trade heat energy. The Egg Crate assembly serves two important functions in any Steam Generator and Heat Exchanger. First, they support the t...
The present subject matter relates to an apparatus for purging gas flow control in straight tube butt welding machine. Particularly, a uniform pressure-based gas flow regulating apparatus accommodated within the purging gas line (5), comprises a flow meter (10a), a knob (10b), a control unit comprising a transceiver...
The present disclosure relates to a method for manufacturing of dished end by hot forming,
wherein the dished end is automatically removed from the bullet at full stroke of the ram,
comprising: a bottom die (7) having provision special groove (15) for self-centring of heated
dished blank; a bottom die (7) having ...
The present invention relates to a system (102) designed for turbine testing, comprising a 4/2-way solenoid valve (1) and a changeover valve (100) interconnected through a manifold (2) for fluid transmission. This system (102) brings forth several advantageous features, notably precise control over fluid flow during...
ABSTRACT
“A METHOD OF MANUFACTURING OF SEAMLESS SQUARE STEEL TUBES IN COLD DRAWING PROCESS”
This invention relates to a method of manufacturing of seamless square steel tubes in cold drawing process comprising:
-Machining of square drawing die along with two outer flanges;
-Making of Top (101) and bottom flanges (...
This invention relates to an arrangement for closing branch sections of pipe for hydro testing without welding dummy plates at end of branch pipe.
Conventional method is to weld a plate to close the branch section which is later removed by cutting operation. This requires extra length of branch pipe which...
The invention relates to clamping fixture device (100) and method for wrapping and welding of fabrication box in boiler critical structure. In this a semi angular plate (03) comprising a vertically connected plate (01 therein the stand pipe (02) is welded vertically with bottom of the base plate (01) to ensure verti...
ABSTRACT
TITLE: A DRY-TYPE TRANSFORMER ASSEMBLY FOR OUTDOOR INSTALLATION IN HARSH ENVIRONMENTAL CONDITIONS
The present invention relates to a dry-type transformer assembly (100) for outdoor installation in harsh environmental conditions, providing enhanced protection and efficient thermal management. The dry-type ...
ABSTRACT
‘A DEVICE FOR HYDRO TESTING OF PIPES & ELBOWS WITHOUT WELDING DUMMY PLATES AT BOTH ENDS OF PIPES & ELBOWS’
This invention focuses on hydro testing of pipes & elbows and provided a device for performing the hydro testing of pipes & elbows without welding the dummy plates at the ends of pipes & elbows. ...
The invention relates a Self-Adjustment Flash Butt Resistance Welding Electrode for Fin to Tube Welding, comprising: Taper holder (1) is designed to “arrest leakage in water flow” and “minimize power loss”. Taper holder (1) is made of copper alloy. Base plate (2) press fitted with Taper holder (1) (Also screw tighte...
ABSTRACT
“APH COLD END BASKET MODULAR FILLING MACHINE”
The present invention is used in an APH cold end basket modular filing machine 300 comprising of a first housing system200, comprising: a tray201 extending longitudinally from a front end203; a rotary to linear motion convertor; a first frame5 for pushing/p...
The present invention relates to an artificial intelligence enabled method for non-contact measurement of linear and angular features of objects using machine-learning. Traditional measurement techniques often require physical contact with the object being measured, which can introduce errors and inaccuracies.
The d...
The present invention relates to system for automated lubrication of inner wall of pierced billet in powdered form (100). The system comprises of an air inlet valve (102), a storage unit (104) for powdered lubricant, a chipping hammer (105), a stir valve (106), a powder valve (108) which manages the flow of lubrican...
The invention presents a novel process for converting high ash Indian coal into acetic acid through methanol carbonylation, aimed at reducing CO2 emissions with minimal release as tail gas. The process involves gasifying the coal using oxygen, carbon dioxide, and steam to produce syngas rich in carbon monoxide, carb...
This invention is related to a Height Adjustable Apparatus for Portable Digital Ultrasonic Flaw Detector Machine for Field Inspection of Boiler Components. This apparatus comes with a movable/ revolving type with height adjustment for the portable Ultrasonic Flaw detector machine. This invention has made easy for sc...
Trademarks
[Class : 1] "High Alumina Ceramic Wear Resistant Lining Material Preferably Used For The Application Of Thermal Power Plant, Steel, Coal Washeries, Cement And Other Industries To Provides Wear Resistant Hard Protection For Highly Abrasive Environment Where Operating Environment Is Loaded With In Organic, Hard, Abrasive, Erosive Materials And Often At Elevated Application Tem...
[Class : 12] Motors, Switch Gears, Control Gears And Engines Included In Class 12, All Being Goods For Use In Motor Land Vehicles.
Trade mark is likely to be removed due to non filing of Renewal request within prescribed time limit In case of any discripancy contact respective TM Registry.
[Class : 12] Motors , Switch Gears, Control Gears And Engines In Class 12 For Use In Land Vehicles
Trade mark is likely to be removed due to non filing of Renewal request within prescribed time limit In case of any discripancy contact respective TM Registry.
[Class : 12] Motors, Switch Gears, Control Gears And Engines Included In Class 12.
[Class : 12] Motors Switch Gears Control Gears And Engines In Class 12 For Use In Land Vehicles
[Class : 9] Tradnsformers, Electric Control Equipment , Electrical Instruments And Apparatus (Including Wireless), Thyrister, Converters, Rectifiers, Electronic Equipments, Electric Condensers, Air Pumps, Control Relays And Panels, Electric Capacitors, Switchgear And Control Gear, Scientific, Nautical, Surveying Photographic Cinematographic, Optical, Weighing, Measuring, Sin...
[Class : 7] Machines And Machine Tools, Motors (Not For Land Vehicles), Machine Couplings And Beltings, Large Size Agricultural Implements, Incubators, Generators, Compressors, Condensors, Pumps, Boiler (Parts Of Machine And Parts Thereof), Soot Blowers, Valves, Turbines, Switch Gears (Not For Land Vehicles Purpulsion System) And Capacitors All Being Goods Included In Class 7.
[Class : 7] Machines And Machine Tools, Motors (Not For Land Vehicles), Machines Couplings And Beltings,Large Size Agricultural Implements, Incubators, Generators, Compressors, Condensors, Pumps Boilers (Parts Of Machines And Parts Thereof) Soot Blowers Valves, Turbines Switch Gears,(Not For Land Vehicles Purpulsion System)and Capacitors All Being Goods Included In Class 7.
[Class : 6] Unwrought And Partly Wrought Common Metals And Their Alloys,Anchors Anvils,Bells,Rolled And Cast Building Materials,Rails And Other Metallic Materials For Railway Tracks,Chains(except Driving Chains For Vehicles), Cables And Wires (Non Electric),Locksmiths Work,Metallic Pipes And Tubes, Safes And Cash Boxes,Steel Balls,Horseshoes,Nails,Valves And Screws,Other Goo...
[Class : 16] Paper And Paper Articles, Cardboard And Cardboard Articles, Printed Matter, Magazines, Envelopes, Stationery, Pamphlets, Pictures, Printes, Diaries Graphic Reproductions, Transparencies And Written Matter.
[Class : 9] Electric Weres And Cables, Electric Switches, Regulators, Electric Sockets, Plugs, Holders, Flourescent Blast (Chokes For Tubes) Tube Fittings, Iron, Elements And Other Parts.
[Class : 6] Unwrought And Partly Wrought Common Metals And Their Alloys,Anchors Anvils,Bells,Rolled And Cast Building Materials,Rails And Other Metallic Materials For Railway Tracks,Chains(except Driving Chains For Vehicles),Cables And Wires(non Electric),Locksmiths Work,Metallic Pipes And Tubes, Safes And Cash Boxes,Steel Balls,Horseshoes,Nails,Valves And Screws,Other Goods...
[Class : 11] Installations For Lighting Heating Heat Exchangers Steam Generating Air Heating Installations And Electrostatic Precipitors Included In Class 11 Fan Cooking Refrigerating Drying Ventilating Water Supply Sanitary Installations For Heating Air Purigying Apparatus And Parts Thereof All Being Goods Included In Class 11.
[Class : 11] Installations For Lighting, Heating, Heat Exchangers, Steam Generating, Cooking, Refrigerating, Drying, Ventilating, Water Supply, Sanitary Installations, Compressors, Boilers, And Air Quality Control Equipments.
[Class : 33] Whisky, Brnady, Rum, Gin Alcoholic Beverage, Spirits And Liquors.
Application form not digitised
[Class : 9] Transformers, Electric Contorl Equipment, Electrical Instruments And Apparatus, Electronic Equipments, Electric Condensers, Air Pumps Control Relays And Panels, Electric Capacitors, Switch Gear, Scientific, Nautical, Surveying And Electrical Apparatus And Instruments (Including Wireless), Photographic, Cinematographic, Optical, Weighing, Measuring, Signalling, Ch...
[Class : 16] Paper And Paper Articles, Cardboard Articles, Printed Matter, Magazines, Envelopes, Stationery, Pamphlets, Pictures, Prints, Diaries, Graphic Reproductions, Transparencies (Paper) And Written Matter.
[Class : 7] Machine And Machine Tools Motors (Not For Land Vehilces) Machines Couplings And Heltings, Large Size Agricultural Implements, Incubators, Generators, Compressors, Pumps , Boilers (Part Of Mahicnes And Parts Thereof), Soot Blowers, Valves, Turbines, Switch Gears (Not For Land Vehilces Purpulsion System) And Capacitors All Being Goods Included In Class 7.
[Class : 12] Motors, Switch Gears, Control Gears And Engines Included In Class 12
[Class : 7] "Mills, Filters Being Parts Of Motors Or
Engines Or Machines, Bearings,
Conveyors, Diesel Oil Engines,
Alternators (Electric), Centrifuges,
Piston Rings, Drill Bits, Chaffcutter,
Dynamo And Parts Thereof.
[Class : 16] Paper & Paper Articles, Cardborad, Articles, Printed Matter, Magazines, Envelopes, Stationery, Pamphlets, Pictures, Prints, Diaries, Graphic Reproduction, Transparencies And Written Matter.
[Class : 16] Paper And Paper Articles, Cardboard And Cardbord Articles, Printed Matter, Magazine, Envelopes, Stationery, Pamphlets, Pictures, Prints, Diaries, Graphic Reproductions, Transparencies And Written Matter.
[Class : 11] Installations For Lighting, Heating, Heat Exchangers, Steam Generating, Cooking Refrigerating, Drying, Ventilating, Water Supply, Sanitary Installations, Compressors, Boilers, And Air Quality Control Equipment All Being Goods Included In Class 11.
[Class : 9] Transformers, Electric Contorl Equipment, Electrical Instruments, And Apparatus, Electronic Equipments, Electric Condensers, Air Pumps Control Relays And Panels, Electric Capacitors, Switch Gear, Scientific Nautical, Surveying And Electrical Apparatus And Instruments (Including Wireless) Photographic, Cinematographic, Optical, Weighing, Measuring, Signalling, Che...
[Class : 7] Machine And Machine Tools, Motors (Not For Land Vehicles), Machine Couplings & Beltings, Large Size Agricultural Implements, Incubators, Generators, Compressors, Condensors, Pumps, Boiler (Parts Of Machine And Parts Thereof), Soot Blowers, Valves, Turbines, Switch Gears (Not For Land Vehicles Purpulsion System) And Capacitors All Being Goods Included In Class 7.
[Class : 6] Unwrought And Partly Wrought Common Metals And Their Alloys, Anchors, Anvils, Bells, Rolled And Cast Builing Materials, Rails And Other Metallic Materials For Railway Tracks, Chains (Except Driving Chains For Vehicles), Cables And Wires (Non Electric), Locksmiths Work, Metallic Pipes And Tubes, Safes And Cash Boxes, Steels Balls, Horseshoes, Nails, Valves And Sc...
[Class : 12] Motors Switch Gears Control Gears Adn Engines Included In Class 12 All Being Goods For Use In Motor Land Vehicles
[Class : 1] Containing Alumina Along With Other Ceramic.
[Class : 11] Installations For Lighting, Heating, Heat Exchangers, Steam Generating, Air Heating Installation And Electrostatic Precipitator Included In Class 11, Fan, Cooking, Refrigerating, Drying, Ventilatinga Water Supply, Sanitary Installations For Heating, Air Purifying Apparatus And Parts Thereof All Being Goods Included In Class 11.
[Class : 9] Transformers, Electric Control Equipment, Electrical Instruments And Apparatus (Including Wireless Thyrister Convrters, Rectifiers, Electronics Equipments, Electric Condenseers Air Pumps, Control Relays And Panels,Electric Capacitor, Switch Gear And Control Gear; Scientific Nautical, Surverying Photographic, Cinematographic, Optical, Weighing, Measuring, Signalli...
[Class : 7] Mills Filters Being Parts Of Motors Or Engines Or Machines, Bearings, Conveyors, Diesel Oil Engines Alternators (Electric), Centrifugel (Machine), Piston Rings, Drill Bits Chaff Cutter, Dynamo And Parts Thereof All Being Goods Included In Class 7.
[Class : 7] Mills, Filters Being Parts Of Motors Or Engines Or Machines, Bearings, Conveyors, Diesel Oil Engines, Alternators (Electric), Centrifuges, Piston Rings, Drill Bits, Chaffcutter, Dynamo And Parts Thereof.
[Class : 9] Electric Wide And Cables.
[Class : 33] Whisky, Brandy, Rum Gin Alcoholic Beverage, Spirits And Liquors.
[Class : 35] Business Management Included In Class 35.
[Class : 1] Ceramics (Compositions For The Manufacture Of Technical Purpose)
[Class : 33] Whisky, Brandy, Rum Gin Alcoholic Beverage, Spirits And Liquors.
[Class : 11] Burners For Solid Fuel; Burners; Fuel Burners; Burners For Industrial Use; Fluidized Bed Combustion Burners; Fluidized Bed Combustion Boilers; Fuel Burner Elements For The Catalytic Combustion Of Fuel.
Ready for Show cause Hearing
[Class : 7] Belt Conveyors; Conveyors; Coal Handling Machines; Machines And Machine Tools.[Class : 9] Gravimeters; Boiler Control Instruments; Boiler Control Apparatus; Uninterruptable Power Supply Apparatus.[Class : 11] Boilers; Industrial Boilers; Heating Boilers; Oil Fired Boilers; Gas Fired Boilers; Boilers For Heating Installations; Boilers For Use In Heating Systems; B...
[Class : 9] Detectors; Ultrasonic Detectors; Leak Detectors; Detection Apparatus; Flame Detectors; Gas Detection Systems; Vapour Monitoring Apparatus For The Detection Of Leaks.
Ready for Show cause Hearing
[Class : 9] Flame Monitoring Systems; Flame Sensors; Flame Detectors; Flame Detection Apparatus.
[Class : 37] Electric Vehicle Charging; Electric Vehicle Charging Services; Services Of Charging Stations For Electric Vehicles; Electric Vehicle Service Stations [Charging And Maintenance].
[Class : 9] Electric Vehicle Charging Piles; Charging Stations For Electric Vehicles; Electric Car Charger; Electric Car Charging Piles; Chargers For Electric Batteries; Chargers For Electrical Accumulators; Chargers; Car Charger; Dc Chargers; Ac/Dc Power Supplies.
[Class : 9] Water Level Indicators; Water Level Detection Apparatus; Oil Water Level Sensors.
[Class : 6] Metal Valves For Controlling The Flow Of Gases In Pipelines.
[Class : 7] Control Valves For Regulating The Flow Of Gases And Liquids [Parts Of Machines]; Valves; Fuel Valves; Pressure Regulating Valves Parts Of Machines; Pressure Valves Being Parts Of Machines; Valves For Engines; Valves For Machines; Valves For Pumps; Pump Control Valves; Valves As Machine Components; Power Operated Valves; Pneumatically Operable Valves; Pneumatic Ac...
Ready for Show cause Hearing
[Class : 7] Blowers [Machines]; Air Blowers; Industrial Blowers; Power Operated Blowers.
[Class : 7] Control Valves For Regulating The Flow Of Gases And Liquids [Parts Of Machines]; Valves; Fuel Valves; Pressure Regulating Valves Parts Of Machines; Pressure Valves Being Parts Of Machines; Valves For Engines; Valves For Machines; Valves For Pumps; Pump Control Valves; Valves As Machine Components; Power Operated Valves; Pneumatically Operable Valves; Pneumatic Ac...
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Electronic Controllers, Computer Software Applications, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Controller Circuit Boards, Electronic Controllers , Digital Input/Output [I/O] Modules, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Controller Circuit Boards, Electronic Controllers , Digital Input/Output [I/O] Modules, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Electronic Controllers, Computer Software Applications, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 9] Electrostatic Precipitators, Electronic Power Controllers, Controller Circuit Boards, Electronic Controllers, Embedded Software[Class : 11] Electrostatic Precipitators For Cleaning Gases, Electrostatic Precipitators For Cleaning Air
[Class : 6] Metal Profiles; Decorative Metal Profiles; Profiled Slabs (Metal ); Baskets Of Metal; Baskets Of Common Metals.
[Class : 6] Metal Profiles; Decorative Metal Profiles; Profiled Slabs (Metal ); Baskets Of Metal; Baskets Of Common Metals.
[Class : 11] Fogging Machines For Sterilising.
[Class : 7] Spraying Machines; Guns For Compressed Liquid Spraying Machines; Motorized Sprayers.
[Class : 11] Air Heaters; Electric Air Heaters; Air Heating Installations; Air Heating Apparatus For Industrial Use.
[Class : 11] Air Heaters; Electric Air Heaters; Air Heating Installations; Air Heating Apparatus For Industrial Use.
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 9] Computer Software Applications, Downloadable; Scientific, Research, Navigation, Surveying, Photographic, Life Saving And Teaching Apparatus And Instruments; Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling The Distribution Or Use Of Electricity; Apparatus And Instruments For Recording, Transmitting, Reprod...
[Class : 41] Training, Seminars, Or Educational Programs Related To Safety And Health.
[Class : 41] Training, Seminars, Or Educational Programs Related To Safety And Health.
[Class : 35] Business Services And Promotional Activities Related To Health, Safety, And Environment.
[Class : 35] Business Services And Promotional Activities Related To Health, Safety, And Environment.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 7] Control Valves For Regulating The Flow Of Gases And Liquids [Parts Of Machines]; Valves; Fuel Valves; Pressure Regulating Valves Parts Of Machines; Pressure Valves Being Parts Of Machines; Valves For Engines; Valves For Machines; Valves For Pumps; Pump Control Valves; Valves As Machine Components; Power Operated Valves; Pneumatically Operable Valves; Pneumatic Ac...
[Class : 42] Non Downloadable, Service Based Software (Such As Online Applications Or Saa S); Computer Software Design, Development, And Maintenance Services.
[Class : 7] Control Valves For Regulating The Flow Of Gases And Liquids [Parts Of Machines]; Valves; Fuel Valves; Pressure Regulating Valves Parts Of Machines; Pressure Valves Being Parts Of Machines; Valves For Engines; Valves For Machines; Valves For Pumps; Pump Control Valves; Valves As Machine Components; Power Operated Valves; Pneumatically Operable Valves; Pneumatic Ac...
