ELASTIC CASING FOR PRESSURE TIGHT PIPELINE SHUTDOWN Russian patent published in 2011 - IPC F16L55/12 

Abstract RU 2418231 C1

FIELD: machine building.

SUBSTANCE: elastic casing consists of cylinder and two end parts, of connecting part and of air tube for compressed air pumping. The air tube is coupled with the connecting pipe by an angular connecting pipe. At its free end it is equipped with the second angular connecting pipe for fixation in an orifice of the pipeline wall. The connecting pipe is arranged on an internal side of an arc-shaped or circular groove, preferably of "П"-form section. The groove is formed with the wall of a cylinder part of the casing and is designed for air tube placement. Additionally, labyrinth packing in form of circular lugs of triangular section is made on external surface of the cylinder part of the casing.

EFFECT: increased safety factor of casing, reliability of pipeline internal cavity sealing, raised fire safety at repair and fire operations.

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RU 2 418 231 C1

Authors

Eliseev Aleksandr Anatol'Evich

Dates

2011-05-10Published

2009-10-30Filed