METHOD FOR CHAMBER LINING WITH HEAT-SHIELDING COATING AND DEVICE FOR ITS REALISATION Russian patent published in 2009 - IPC B29C63/34 F16L9/04 

FIELD: technological processes.

SUBSTANCE: invention is related to method for lining of pipe internal surfaces with application of tubular layers and molded shells and spacer device for lining of pipe internal surfaces, and may be used for heat insulation of tubular chambers with speed heat flow. Method for lining of chamber with heat-shielding coating includes application of adhesive layer and installation of tubular multilayer shell with action of internal pressure and heating. For chamber lining two cloths from porous heat-shielding carbon material, having each the area equivalent to chamber surface are impregnated with phenol formaldehyde resin and rolled in cylinder by two coaxial layers with fiber woof across its generatrix and diametrically installed joints. At that previously internal surface of chamber and border contacting surfaces of cloths are coated with glue, dried, and cylinder is installed in chamber. Inside chamber with cylinder installed in it along its whole length spacer device is inserted, sealed from chamber ends by force of squeezing with plugs. Plugs are equipped with drain holes and nozzles, through one of which air is supplied into internal cavity of spacer device, pressure of 3.8-4.0 kgf/cm² is created and maintained for 60-65 min at the temperature of 170-180°C. Then chamber is cooled, air is released, and plugs and spacer device are withdrawn. Spacer device for chamber lining is arranged in the form of rubber tubular rings set equipped with end collars with grooves, in which along circumference longitudinal channels are arranged that communicated to drain holes in plugs. At that ratio of rings diametre to their width makes 1:2…2.5.

EFFECT: higher quality of internal coating application in chamber.