Composite flexible pipe anti-compression armor layer

Abstract

The invention relates to a composite flexible pipe anti-compression armor layer which comprises a non-bonding composite flexible pipe composed of a framework layer, a lining layer, an anti-compression armor layer, three wear-resisting layers, two anti-tension armor layers, an insulating layer and an outer wrapping layer. The composite flexible pipe anti-compression armor layer is characterized in that the profiled bar armor layer with a w-shaped cross section and the profiled bar armor layer with a c-shaped cross section are arranged between the lining layer and the wear-resisting layers in a mode of winding on the pipe diameter of the lining layer with the winding angle close to 90 degrees, the two the profiled bar armor layers are relatively and mutually buckled and wound, an upper groove is arranged between protruding teeth between two ends of the c-shaped profiled bar armor layer, an inner wall and an outer wall of one protruding tooth are inwards arranged, and an inner wall and an outer wall of the other protruding tooth are outwards arranged. A wide groove and a narrow groove are arranged on the top portion of the w-shaped profiled bar armor layer, the wide groove corresponds to a concave outer wall of the protruding tooth, the narrow groove corresponds to a convex outer wall of the protruding tooth, and each side angle of the c-shaped profiled bar armor layer and the w-shaped profiled bar armor layer are arranged into an arc angle. The composite flexible pipe anti-compression armor layer can be widely used for various anti-compression pipes to transmit liquid.

Description

technical field [0001] The invention relates to a hose, in particular to a pressure-resistant armor layer for a marine non-bonded composite hose. Background technique [0002] Traditional submarine pipelines are generally made of steel pipes. The overall construction, installation and follow-up maintenance work cycle is long and the cost is high. In recent years, flexible composite pipelines that have emerged abroad have good corrosion resistance, strong adaptability to seabed topography, and fast laying speed. It has the advantages of low cost, not easy to wax, and can be reused. It has begun to be applied to the pipeline transportation of subsea oil, gas and water. There are two main types of flexible composite pipes, one is adhesive composite hose and the other is non-adhesive composite hose. The connection of adhesive composite hose is generally extruded by polymer layer and metal reinforcement layer. Connected into one body, after extrusion molding, a higher bonding st...

AI Technical Summary

Problems solved by technology

Since there is a certain gap between adjacent sections, this can ensure a certain flexibility of the hose, and at the same time it brings hidden dangers. When the hose bends too much or the axial movement is too large, the movement between adjacent sections If it is too large, there will be a hidden danger of slipping out between adjacent sections, which will lead to the loss of the interlocking function of the sections

The larger the gap between adjacent sections of the compressive armor layer, the better the bending flexibility of the layer, but the increase in the gap will cause the creep value of the inner layer to increase accordingly.

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