Profiled material for marine non-adhesive composite flexible hose and pressure-resistant armor layer

Abstract

The invention relates to a profiled material for a marine non-adhesive composite flexible hose, a pressure-resistant armor layer and the flexible hose. The profiled material comprises a steel strip with a GF-shaped cross section, and the steel strip comprises a first vertical arm, a first cross arm, a second vertical arm, a second cross arm, a third vertical arm, a third cross arm, a fourth vertical arm and a fourth cross arm which are sequentially connected into a whole. The pressure-resistant armor layer is formed by winding and interlocking a plurality of profiled materials. The flexible hose comprises a framework layer, a lining layer, the pressure-resistant armor layer, a first wear-resistant layer, a first tensile armor layer, a second wear-resistant layer, a second tensile armor layer, an anti-twisting layer and an outer coating layer which are sequentially arranged from inside to outside. The profiled materials are connected in a winding and interlocking mode, slippage between the adjacent steel strips of the pressure-resistant armor layer can be effectively prevented, gaps between interlocking structures allow relative sliding, good flexibility of the marine composite flexible hose is guaranteed, internal pressure loads are resisted through dynamic movement deformation, and the marine composite flexible hose is suitable for the severe ocean environment in the 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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