FLEXIBLE PIPE AND FLEXIBLE PIPE END CONNECTION Russian patent published in 2020 - IPC F16L11/08 F16L23/00 

FIELD: valve engineering.

SUBSTANCE: invention relates to polymer pipes with end flange joints and can be used in oil, chemical and construction industries, as well as for water supply. In a flexible pipe containing an outer shell, a spiral frame and an internal sealing chamber with slots, into which longitudinal force elements are placed in form of two layers wound in opposite directions, the power elements have end sections protruding beyond the ends of the pipe body. End connection of flexible pipe includes male part with flange entering flexible tube, and band enveloping flexible pipe, longitudinal power elements of which have bent in reverse side part, located in cone cavity formed by band and pipe, which is filled with self-hardening compound.

EFFECT: higher bearing capacity of pipes in radial and axial directions, as well as providing complete tightness and reliability of end connection of pipes.

2 cl, 2 dwg