Tooth-shaped-section pressure-resisting armor layer for composite hoses

Abstract

The invention relates to a tooth-shaped-section pressure-resisting armor layer for composite hoses. The tooth-shaped-section pressure-resisting armor layer is characterized by being formed by winding and interlocking a profiled bar, wherein the section of the profiled bar is tooth-shaped; the section comprises a girder; the girder comprises a first bottom wall and a second bottom wall along the length direction; an end tooth-shaped structure is integrally arranged at two ends of the second bottom wall toward the same side respectively; two middle tooth-shaped structures are arranged at intervals on the second bottom wall between the two end tooth-shaped structures; end depressed areas are formed between the middle tooth-shaped structures and the adjacent end tooth-shaped structures; a middle depressed area is formed between the two middle tooth-shaped structures; the two end tooth-shaped structures are bent toward the same side; middle tooth-shaped structures of an adjacent profiled bar are inserted into the end depressed areas of the profiled bar; end tooth-shaped structures of two adjacent profiled bars are inserted into the middle depressed area of the profiled bar; the adjacent profiled bars are mutually meshed. The tooth-shaped-section pressure-resisting armor layer has the advantages of strengthening the bending flexibility of the pressure resisting armor layers and effectively preventing the adjacent sections of the pressure resisting armor layers from mutually sliding out, thus being widely applied to the structure setting of the marine composite hoses.

Description

technical field [0001] The invention relates to an armor layer, in particular to a compression-resistant armor layer of a marine composite hose tooth-shaped section. Background technique [0002] Traditional and conventional submarine pipelines are mainly made of steel pipes, and the overall construction, installation and follow-up maintenance work cycle is long and expensive. In recent years, flexible composite pipelines that have emerged abroad have good corrosion resistance, strong adaptability to submarine topography, and fast laying speed. , low cost, not easy to wax and can be reused and other advantages began to be applied to the transportation of subsea oil, gas and water. Flexible composite pipes include adhesive composite hoses and non-adhesive composite hoses; among them, the adhesive composite hoses are generally extruded into one by a polymer layer and a metal reinforcement layer, and are used after extrusion molding through a special process. A higher bond str...

AI Technical Summary

Problems solved by technology

After the compression armor layer is wound, there is a certain gap between the adjacent sections, which can ensure the flexibility of the hose, and the larger the gap between the adjacent sections, the better the bending flexibility of the layer, but it also brings There is a hidden danger, because the increase of the gap causes the increase of the creep of the inner liner, and when the bending is too large or the axial movement is too large, the movement between the adjacent sections is too large, and there is a gap between the adjacent sections. Possibility of slipping out of each other, resulting in loss of interlocking function of the sections

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