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...