FIELD OF INVENTION

The present invention relates to a cost effective structural arrangement of insulation system for flat surfaces. More particularly, the invention relates to a cost effective structural arrangement of insulation system.
BACKGROUND OF INVENTION
In a typical steam generator around 90-95% of surface areas are flat surfaces. These areas are insulated using mineral wool for thermally insulating low as well as high temperature surfaces and ducts to minimize thermal loss and sound level to ensure human safety.
Prior art arrangement structure is used for holding insulation material and cladding sheet mainly using 6 mm diameter fixing pin, retainer type-A, casing support, corner support and self-tapping screw. The erection activities involved during erection of prior art structural arrangement of insulation is highly time and material consuming process. Hence novel structural arrangement is required to replace the prior art arrangement of structural material.
PRIOR ART SEARCH
EP2568208A1 teaches a duct insulation system for insulating at least a part of a ducting system. The duct insulation system comprising a plurality of shells of insulating material for arrangement around or along a length of a ducting element within the ducting

system, and coupling means for holding at least two adjacent shells together. In use, the system surrounds at least a substantial part of the ducting element and provides a substantially rigid outermost casing around the ducting element.
This patent is about the arrangement of plurality of shells of insulation material around the ducting element and does not talk about simple novel structural arrangement of this present patent.
US 8,011,619 B2 discussed the design and attachment of an insulation package near the fuselage structure to protect the cabin region of an aircraft against fire acting on the insulation package from outside the aircraft environment, thus clearly facilitating evacuation of the passengers from the vehicle. The insulation package arrangement may comprise several fuselage insulation packages of an elongated form. These packages may adjoin the aircraft fuselage structure in the direction of the longitudinal axis of the aircraft. They may be completely enclosed by a burn-through-proof foil which is arranged in a space enclosed by interior paneling and by the panels of the outer skin. The longitudinal end of the fuselage insulation package continues outward with a flat insulation end section is attached which is attached to a rib-attachment region arranged below the respective longitudinal sides of a rib and near the stringer by means of burn-through-proof attachment elements arranged on the inside of the aircraft with respect to the insulation.
This patent is about the insulation package arrangement may comprise several fuselage insulation packages of an elongated form and does not talk about simple novel structural arrangement of this present patent.

OBJECTS OF THE INVENTION
Therefore it is an object of the invention to propose a cost effective structural arrangement of insulation system for flat surfaces which is capable of reducing cycle time of erection activities for thermal insulation.
Another object of the invention is to propose a cost effective structural arrangement of insulation system for flat surfaces which is able to reduce material consumption for erection of thermal insulation on flat surfaces.
SUMMARY OF THE INVENTION
In view of saving the time for erection activity for thermal insulation, an alternate novel method of structural arrangement is to be designed. In the novel structural arrangement, a 6 mm diameter fixing pin supports 3 mm flat which holds the cladding sheet placed in parallel to duct plate. At the same time, the prior art arrangement of structure is used for holding the cladding sheet mainly involving 6 mm diameter fixing pin, retainer type-A, casing support, corner support and self-tapping screw. The cladding sheet is fixed on the 3 mm thick flat which is placed in parallel to duct plate by using self-tapping screw and the cladding sheet is shaped to substantially conform to the outer surface of the base plate structure like duct. The longitudinal and transverse pitch of 6

mm diameter fixing pin is 480 mm and 240 mm respectively on flat surfaces for the proposed novel structural arrangement of insulation. A 3 mm thick flat replaces the prior art arrangement of structural materials like retainer type-A, casing and corner support reducing an erection time and material consumption. Use of single flat, in place of 3 components of the prior art, reduces the time required for erection by 33%.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 shows an embodiment of a structural arrangement of mineral wool
insulation system according to prior art.
Fig. 2 shows an embodiment of the present invention – isometric view of novel
structural arrangement of insulation system for flat surfaces.
Fig. 3 shows an embodiment of the present invention – front cut sectional view of
novel structural arrangement of insulation system for flat surfaces.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
The present invention is applicable to the method of structural arrangements executed based on the prior art method as shown in Fig. 1. This structural arrangement

is being used for ducting system, evaporator water wall, pent house, Electrostatic Precipitator, etc. of a thermal power plant.
In all steam generators, mineral wool insulation materials (2) are used for reducing surface/skin temperature or reducing sound level of ducting systems (1). Prior art arrangement structure uses 6 mm diameter fixing pin (3), retainer type-A (4), casing support (5), corner support (6), self-tapping screw (7) and cladding sheet (8) for holding insulation material (2).
The present invention shown in Fig. 2 and Fig. 3 uses a flat (10) to replace 3 components viz., the retainer type-A (4), casing support (5) and corner support (6). Use of single flat, in place of 3 components of the prior art, reduces the time required for erection by 33%.
The novel structural arrangement comprises of flat (10) which replaces the structural material like retainer type-A (4), casing (5) and corner support (6) of the prior art arrangement. A 6 mm diameter fixing pin (3) will hold the insulation material (2) and support 3 mm thick flat (10) placed in parallel to duct plate (1). The cladding sheet (8) is fixed on the 3 mm thick flat (10) by using self-tapping screw (11) and the cladding sheet (8) is shaped to substantially conform to the outer surface of the base plate structure like duct (1). The longitudinal and transverse pitch of 6 mm diameter fixing pin (3) is 480 mm and 240 mm respectively for the novel structural arrangement of insulation. A 3 mm thick flat (10) replaces few components of the prior art arrangement structural material and reduces material consumption.

The procedure of erection for the novel structural arrangement for insulation is described below:
First 6 mm diameter of fixing pin (3) is tag welded (12) on flat surface (1) and the insulation material (2) is laid on the flat surface (1) and the fixing pin is used to hold the insulation material (2). The top end of the 6 mm diameter fixing pin (3) is tag welded (9) with 3 mm thick flat (10) which is placed in parallel to duct plate (1). Then the cladding sheet (8) is placed on the 3 mm thick flat (10) by using self-tapping screw (11). The cladding sheet (8) load is transferred to flat surface (1) through the flat (10) and fixing pin (3).

WE CLAIM
1. A cost effective structural arrangement of insulation system for flat surfaces consisting
a flat (10) for replacing a plurality of components such as retainer type A(4), casing (5) and corner support (6) of earlier arrangement;
a fixing pin (3) tag welded (9) with flat surface (1) and the insulation material (2);
a cladding sheet shaped to conform to the outer surface of the base plate structure like duct (1); wherein,
the fixing pin (3) is disposed for holding the insulation material (2) and for supporting the flat (10) placed in parallel to duct plate (1) when the cladding sheet is placed on the flat (10) by means of self-tapping screw (11) wherein the cladding sheet load is transferred to flat surface (1) through the flat (10) and fixing pin (3);
wherein fixing pins are disposed at the longitudinal and transvers pitches of 480mm and 240mm respectively.
2. The structural arrangement as claimed in claim 1, wherein the diameter of fixed pin
(3) is 6mm and the thickness of flat is 3mm.
3. A method of constructing the structural arrangement of insulation system for flat
surfaces comprising;

tag welding a fixing pin (3) on flat surface (1) laying a insulation material on the flat surface (1) holding the insulation material by the fixing pin (3) tag welding top end of the fixing pin with flat (10) configured parallel to duct plate (1); wherein,
a cladding sheet (8) is fixed on the flat (10) by self tapping screw (11) when the cycle time of erection is reduced by 33%.