HEAT-INSULATING AND WATERPROOFING BUTT JOINT FOR PIPELINES Russian patent published in 2005 - IPC

FIELD: construction.

SUBSTANCE: butt joint comprises heat insulating material interposed between the outer side of pipes to be joined, faces of the heat insulating material, and inner side of the polymeric shell made of semirings, polymeric clutch mounted in the zone of butt joining, and waterproofing material between the outer side of the polymeric shell, faces of the waterproofing material of the pipeline, and inner side of the polymeric clutch. The heat-insulating material interposed between the outer side of the pipes to be joined and the inner side of the polymeric shell are made of semirings which are made in block with the semirings of the polymeric shell. The electric heating members are arranged over the periphery of the ends of polymeric shells of pipes between their outer sides and inner side of the polymeric clutch. The heating members can be connected with a power source. The sites of butting the polymeric shell of the semirings are provided with applicator. The semirings should be pressed with banding belts to the outer side of the polymeric shell.

EFFECT: enhanced reliability.

39 cl, 7 dwg