Flexible composite high-pressure delivery pipe

Abstract

The invention discloses a flexible composite high-pressure delivery pipe. The flexible composite high-pressure delivery pipe comprises a media transmission layer, at least one enhanced layer and a protective layer which are integrally formed by means of heating and pressurization, the enhanced layers are arranged between the media transmission layer and the protective layer and are arranged as fiber enhanced layers, metal enhanced layers or a combination of the fiber enhanced layers and the metal enhanced layers, the fiber enhanced layers and the metal enhanced layers are of banded structures formed by gel mould coated with hot melt glue, an angle of 50-60 degrees is formed between each of the fiber enhanced layers and the metal enhanced layers and a central axis of the pipe, and the enhanced layers are of a bidirectional fiber band and metal band intersection winding structure comprising a left spiral winding layer and a right spiral winding layer. The flexible composite high-pressure delivery pipe has the advantages of reasonable structural design, high pressure bearing capacity, high resistance to low-temperature impact, small friction coefficient, good flexibility, environmental protection and long service life.

Description

technical field [0001] The invention relates to a flexible pipe, in particular to a flexible composite high-pressure conveying pipe, which is mainly used for laying pipelines under special requirements such as wear resistance, corrosion resistance, impact resistance, small friction resistance, and high pressure bearing capacity. Used in oil and gas gathering pipelines, natural gas pipelines and subsea pipelines. Background technique [0002] Existing pipelines used to transport sewage and corrosive media (such as natural gas containing hydrogen sulfide) generally use steel pipes, steel-plastic composite pipes and ultra-high molecular weight polyethylene composite pipes. The defects of steel pipes are heavy weight, easy corrosion, and long service life. Short; the steel-plastic composite pipe is mainly composed of PE and steel, the main disadvantage is that the pressure bearing capacity is poor, and its scope of application is still limited to buried low-pressure water pipes;...

AI Technical Summary

Problems solved by technology

[0002] Existing pipelines used to transport sewage and corrosive media (such as natural gas containing hydrogen sulfide) generally use steel pipes, steel-plastic composite pipes and ultra-high molecular weight polyethylene composite pipes. The defects of steel pipes are heavy weight, easy corrosion, and long service life. Short; the steel-plastic composite pipe is mainly composed of PE and steel, the main disadvantage is that the pressure bearing capacity is poor, and its scope of application is still limited to buried low-pressure water pipes; , pressure bearing capacity, wear resistance, chemical corrosion resistance, etc. have been improved, but there are still high transportation and construction costs, especially in the complex terrain, harsh climate and submerged environment, the laying is difficult, and the pipeline joints Many, not only consumables, energy consumption, but also lead to multiple leakage hidden dangers in pipelines, resulting in poor quality of pipelines, high maintenance costs, and short service life

Images