TRENCHLESS PIPELINE REPAIR METHOD Russian patent published in 2022 - IPC F16L1/28 

FIELD: pipeline transport.

SUBSTANCE: invention relates to pipeline transport and can be used when replacing old pipelines without opening the ground, laying or replacing faulty pipes, repairing or connecting pipes on the water surface or under water - in or on a frozen surface. A method for trenchless repair of a pipeline, which includes pulling a head through an old pipe, consisting of a cylindrical body, to the back of which a replacement pipeline is attached, the head is pulled through steel drill rods, in the front part of the cylindrical body, vertical and horizontal stiffeners are crosswise located, the protruding parts of which have bevels from the edge of the front part of the cylindrical body with the formation of a narrowed cross-shaped tip, and in the upper part of the horizontal stiffener there is a hole through which the drill rods are attached.

EFFECT: improving the reliability, efficiency and simplification of the method for trenchless pipeline repair.

1 cl, 2 dwg