INSULATING DEVICE FOR ASSEMBLY OF PIPES Russian patent published in 2011 - IPC F16L25/02 

FIELD: machine building.

SUBSTANCE: device consists of metal case in form of cylinder with internal cylinder groove restricted with internal circular lug, and also having cylinder lug on external surface. Two stepped cylinder of dielectric material and a sealing padding are set between the pipe and the groove of the case. A metal ring, a C-shaped ring made of material harder, than material of the pipe and a movable bush are arranged between the pipe and the cylinder of dielectric material. Uniform around circumference transfer of the end cover, of the stepped cylinder positioned before it and the pipe, and of the movable bush occurs in axial direction at tightening bolts which enter orifices in the cylinder lug of the case and the end cover. With its internal conic surface the movable bush weighs upon external surface of the C-like ring, compresses it, forces pointed radial lugs of the C-like ring into a body of the pipe and fixes the pipe in the insulating device for pipe assembly. It also compresses the insulating padding.

EFFECT: insulating padding, three cylinders and insertion of dielectric material form reliable electro-insulating circuit.

2 dwg