Sectional heat insulating jacket

Abstract

A sectional heat insulating jacket is a removable, repeatedly used for various process equipment heat(sound-) insulation product<been made of a set of the insulation sections ( 2 ), which are separated at the stage of installation by the assembling joints ( 22 ) and are connected among themselves in an organic whole using the connecting means ( 24 ). The insulating sections ( 2 )—polyhedral, closed protective housings ( 4 ), are formed by thread-stitched seams ( 6 ) and comprise the bottom ( 8 ), upper ( 10 ), and lateral ( 12 ) flexible layers. There is a middle heat (sound)insulation-forming layer, placed inside the housing ( 4 ). The layers ( 8 ), ( 10 ), and ( 12 ) are fastened among themselves by the fastening means ( 16 ), consisting of the fastening rod ( 18 ) and the fixing means ( 20 ) and providing invariable thickness of the insulation section ( 2 ) and its all layers mutual work during thermal deformation. The connecting means ( 24 ) comprise the studs ( 26 ) fixed on the fastening rods ( 18 ), and the plates-clamps ( 28 ), which are able to be turned around on one of the studs ( 26 ) and to fix a mutual positions of the fastening rods ( 18 ) and, consequently, a mutual positions of the adjacent insulation sections ( 2 ) at a stage of installation, under an equipment heating process and after the assembling joint ( 22 ) “self-sealing”, i.e. at a stage of operation. The assembling joints ( 22 ) “self-sealing” effect is provided due to the insulation sections shape ( 2 ) and due to the offered method for calculation of the assembling joints ( 22 ) widths at levels of the upper ( 10 ) and bottom ( 8 ) flexible layers of the insulation sections ( 2 ) in longitudinal and transverse directions.

1 . A sectional heat-insulating jacket, that is removable, repeatedly used for various process equipment insulation, said jacket comprising: 
 (a) set of multi-layer insulation sections with assembling joints between them, self-sealing under operating conditions; each of said insulation section is made as a polyhedral, closed protective housing, formed by thread-stitched seams from the bottom flexible layer inverted to the insulated hot surface of the process equipment and skintight to this surface, the upper flexible layer which is equally spaced from the bottom flexible layer along the entire surface of said insulation section and inverted to an environment, the lateral flexible layers inclined under a sharp angle to said upper flexible layer at the stage of installation and perpendicular to surfaces of both said layers at the stage of operation and also inverted to said lateral flexible layers of adjacent insulation sections;    a middle semi-rigid heat (sound) insulation-forming layer, placed inside said housing;    fastening means placed equidistantly from the side of said upper flexible layer of each insulation section along its surface and intended for connection of said bottom and upper flexible layers and the middle insulation-forming layer, located between the flexible layers;    (b) connecting means for adjacent insulation sections connection with each other and for their mutual position fixing at a stage of installation, in intermediate positions—during heating and in final position—at the stage of operation; said connecting means are made as steel studs, fixed during installation from the side of the upper flexible layer on said fastening means placed equidistantly along a perimeter of each of said insulation section, and special cover fixing plates.    
   
   
       2 . A sectional heat insulating jacket as defined by  claim 1 , comprising fastening means made as fastening rod and the fixing means of this rod located on the surface of said insulation section.  
   
   
       3 . A sectional heat insulating jacket as defined by  claim 2 , wherein said fastening rod, fabricated out of heat-resistant stainless steel as a conical helical spring whose height is equal to the distance between said bottom and upper flexible layers; at the basis of said spring a flat coil is formed, and on its other end a straight part of the spring, directed along a spring axis, is formed and is supplied with a thread; said fixing means include: a round steel abutment washer rigidly fixed inside said flat coil of the spring, having a threaded hole in the center for the said stud, a special self-locking washer, put on said straight part of the spring and fixed on the surface of said bottom flexible layer by a locking nut, screwed on said straight part of the spring.  
   
   
       4 . A sectional heat insulating jacket combination as defined by  claim 1 , wherein said insulation sections of which are made with upper and bottom ledges conformed from said lateral flexible layers and overlapping each other at a level of a median surface; said lateral flexible layers, which formed ledges, represent two parallel inclined surfaces, connected by an intermediate horizontal flexible layer; said inclined flexible layers and said intermediate horizontal flexible layer of each said insulation section are inverted to corresponding layers of the adjacent insulation sections; between adjoining surfaces of said bottom and upper ledges a layer of polished steel foil fixed to the upper surface of the bottom ledges is placed, and said upper and bottom ledges are placed in pairs on adjacent surfaces of said lateral flexible layers of the insulation sections.  
   
   
       5 . A sectional heat insulating jacket as defined by  claim 2 , wherein said fastening rod is fabricated out of heat resistant polymer in the shape of a tube-like bushing with trapezoidal lugs located along a helical path of the outer bushing surface, and the height of said bushing and distance between said bottom and upper flexible layers are equal; said fixing means, fixing each of said bushing on the surfaces of said bottom and upper flexible layers are accepted as two support steel washers, steel stud and screw (or two screws) which form a self-tapping fastening thread on the inner bushing surface during the screwing process.  
   
   
       6 . A sectional heat insulating jacket as defined by  claim 5  wherein said fastening rod is fabricated out of Teflon or Textolite.  
   
   
       7 . A sectional heat insulating jacket as defined by  claim 2  wherein each insulation section is supplied in addition between its two adjacent inclined lateral flexible layers with an elastic braid from heat-resistant polymer.  
   
   
       8 . A sectional heat insulating jacket as defined by  claim 7  wherein the elastic braid is fabricated out of silicone resin.  
   
   
       9 . A sectional heat insulating jacket as defined by  claim 1 , comprising said connecting means fabricated as steel studs, fixed at the stage of installation from the side of said upper flexible layer on said fastening means, and special T-shaped plates—clamps; wherein said plates-clamps are supplied with round holes and arched slot for fastening said plates on said studs.