Composite pipe layering seal connector structure and preparing method thereof

Abstract

The invention belongs to the technical field of pipeline connectors, and particularly relates to a composite pipe layering seal connector structure and a preparing method thereof. The composite pipe layering seal connector structure comprises a layering peeling pipe opening which is in sealed connection with a connector body. The connector body comprises a flange plate and a connecting pipe. Innerside seal of the connecting pipe and an inner core layer of a composite pipe is achieved in a flange connection manner. A sleeve is arranged outside the connecting pipe. One end of the sleeve is in flange connection with a connecting pipe body, outer side seal of the other end of the sleeve and an outer protection layer of the composite pipe is achieved in a flange manner, and a cavity for containing and fixing a composite pipe tensile layer and / or an enhancing layer is formed between the sleeve and the connecting pipe. The novel connector structure achieves layering seal connection, connection is safe and firm, the characteristics that the structure is simple and compact, and manufacturing and assembling are convenient are achieved, and the novel connector structure is particularly suitable for large-caliber flexible composite pipe connector connection.

Description

technical field [0001] The invention belongs to the technical field of pipe joints, and in particular relates to a layered sealing joint structure of a composite pipe and a preparation method thereof. Background technique [0002] Pipelines are currently the main equipment for oil and gas transportation. Ordinary steel pipelines have the disadvantages of being easy to corrode, easy to scale, difficult to eliminate static electricity, difficult to construct, and short in service life. Corrosion, perforation, and high static electricity will cause safety accidents such as large-scale leakage and pollution. Especially in the field of marine dynamic pipelines, it is difficult for steel pipelines to meet the use requirements due to poor fatigue resistance, while flexible composite pipes have good fatigue resistance, With the characteristics of strong flexibility and excellent corrosion resistance, it has become a better choice to replace steel pipes, and has gradually been popula...

AI Technical Summary

Problems solved by technology

For example, the 2-inch to 8-inch non-metallic flexible composite high-pressure delivery pipe joints generally adopt steel joints, and the locking method is to radially buckle the outer sleeve. The influence of the material of the joint itself and the outer diameter of the pipe, and it is not suitable for marine pipelines with high axial tensile requirements

In addition, when the internal diameter of the composite pipe is greater than 8 inches, limited by the working diameter of the joint crimping equipment, the joint operation of large-diameter pipes cannot be realized, which greatly limits the popularization and application of large-diameter non-metallic flexible composite high-pressure delivery pipes

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