F-shaped cross section pressure-resistant armor layer of composite hose

Abstract

The invention relates to an F-shaped cross section pressure-resistant armor layer of a composite hose. The F-shaped cross section pressure-resistant armor layer of the composite hose is characterized by comprising an outer special-shaped profile and an inner special-shaped profile, the cross sections of the outer special-shaped profile and the inner special-shaped profile are of an F shape, the outer special-shaped profile and the inner special-shaped profile comprise a main beam respectively, one side wall of the main beam is provided with two convex teeth, the convex teeth are arranged at intervals and extend in the length direction of the main beam, a tooth socket with a width lightly larger than the tooth width of the convex teeth is formed between the two convex teeth, the right / left end surface of one of the two convex teeth is level with the right / left end surface of the main beam, and the distance between the left / right end surface of the other convex tooth and the left / right end surface of the main beam is slightly larger than the tooth width; the convex teeth of the inner special-shaped profile are outwards wound on the outer wall of the inside liner of the composite hose, the convex teeth of the outer special-shaped profile are inwards wound on the inner special-shaped profile, the convex teeth and tooth sockets of adjacent cross sections are mutually engaged, and the outer special-shaped profile and the inner special-shaped profile are wound and interlocked to form a ring shape to cover outside the inside liner. According to the F-shaped cross section pressure-resistant armor layer of the composite hose, the bending flexibility of the pressure-resistant armor layer of the composite hose is improved, the adjacent special-shaped profiles can be prevented from slipping off, and the F-shaped cross section pressure-resistant armor layer of the composite hose can be widely applied to composite hose structures.

Description

technical field [0001] The invention relates to an armored composite hose, in particular to an F-section pressure-resistant armor layer of a composite hose. Background technique [0002] Traditional submarine pipelines are generally made of steel pipes, and the overall construction, installation and follow-up maintenance work period is long and the cost is high. In recent years, the flexible composite hoses that have emerged abroad have begun to be applied to subsea oil, gas and water because of their good corrosion resistance, strong adaptability to seabed topography, fast laying speed and low cost, not easy to wax and can be reused. in the subsea pipeline. [0003] There are two main types of flexible composite hoses, one is bonded composite hose and the other is non-bonded composite hose. The connection of the bonded composite hose is generally extruded and joined together by the polymer layer and the metal reinforcement layer. After extrusion molding, a high adhesion b...

AI Technical Summary

Problems solved by technology

[0005] 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 lining to increase accordingly.

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