A Profile and Compression-Resistant Armor for Marine Unbonded Composite Flexible Hose

Abstract

The invention relates to a special-shaped material, a pressure-resistant armor layer and a flexible hose for marine non-bonded composite flexible hoses. Integral first vertical arm, first cross arm, second vertical arm, second cross arm, third vertical arm, third cross arm, fourth vertical arm and fourth cross arm; the compressive armor layer consists of several The above profiled materials are wound and interlocked; the flexible hose includes a skeleton layer, an inner lining layer, a compressive armor layer, a first wear-resistant layer, a first tensile armor layer, a second Grinding layer, secondary tensile armor layer, anti-twist layer and outer cladding layer. The special-shaped bar of the present invention is connected by winding interlocking, which can effectively prevent slippage between adjacent steel strips of the pressure-resistant armor layer, and there is a gap between the interlocking structures to allow relative sliding, ensuring that the marine composite flexible hose has good flexibility. Dynamic movement and deformation occur to resist internal pressure load, which is suitable for the harsh marine environment of deep sea.

Description

technical field [0001] The invention relates to a marine composite flexible hose, in particular to a profile and a pressure-resistant armor layer for a marine non-adhesive composite flexible hose, and belongs to the technical field of marine oil and gas resource transportation. Background technique [0002] With the continuous exploration and development of onshore oil and gas fields, the production of onshore oil and gas has been continuously reduced, and the rich offshore oil and gas resources have gradually attracted people's attention. According to valid data, the world's marine oil and gas resources account for one-third of the total oil, while the undiscovered offshore oil resources account for 70% of the total marine oil resources. A large number of offshore oil and gas resources are still dormant, waiting urgently for us to develop and utilize. [0003] As one of the most important tools in the transportation of offshore oil and gas resources, offshore pipelines can...

AI Technical Summary

Problems solved by technology

Due to the asymmetry of the cross-sectional profile of the compressive armor layer, the common failure mode is unlocking, while the metal surfaces in the armor layer are in direct contact and move relative to each other, and wear failure often occurs. When the dynamic movement of the pipeline causes a large change in the load fatigue fracture

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