A novel cryogenic flexible pipe

Abstract

The utility model provides a novel low temperature flexible pipeline relates to pipeline engineering technical field, including first backing pad, the outer wall of first backing pad is equipped with protection assembly, protection assembly includes outer layer, the inner wall fixed mounting of outer layer has middle layer, the side fixed mounting of middle layer away from outer layer has inner layer. The utility model, through setting through " inner layer medium resistance + middle layer impact resistance + outer layer antiaging " stratified design, has solved traditional pipeline low temperature stratification, the core problem of brittle fracture. Inner layer adopts low temperature modified polyolefin or fluorine plastic to ensure that medium is stable and resistant, middle layer honeycomb - fiber composite structure reduces 30% or more and low temperature impact toughness improves 50%, the balance of outer layer gradient hardness and annular groove nesting realizes the wear resistance and stress buffering, the spherical joint of connecting assembly and double seal design solves the angle limit and leakage problem of rigid connection, forms the whole scene protection system from inside to outside.

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