Continuously reinforced composite tube winded by glass fiber resin band and preparation method

Abstract

The invention provides a continuously reinforced composite tube winded by a glass fiber resin band and a preparation method. The continuously reinforced composite tube winded by the glass fiber resin band comprises an inner tube 1, a glass fiber resin band spiral reinforced layer 2, a coating layer 3, an improved closed cell thin film layer 4 and an outer tube 5 from inside to outside sequentially. The glass fiber resin band spiral reinforced layer 2 is of more than one glass fiber resin band winding layers. Different angles are formed between axial directions of each of the resin bands and the inner tube 1. Gaps are reserved between bands of each glass fiber resin band. The invention further discloses a method for preparing the continuously reinforced composite tube. According to the invention, the circumferential strength and axial strength of the tube are increased by high strength of glass fiber. The glass fiber resin band is thin and the chemical components have good corrosion resisting effects. The manufacturing process is simple and convenient, so that the weight of the tube body is greatly reduced, the corrosion problem can be effectively solved, and the weight of the tube body is reduced.

Description

technical field [0001] The invention relates to a composite pipe used in oil transportation pipelines and other liquid / gas material transportation pipelines, in particular to a continuous reinforced composite pipe. [0002] The present invention also relates to a method for preparing the above continuous reinforced composite pipe. Background technique [0003] Steel belt wound continuous reinforced composite pipes are widely used in transportation pipelines in oil fields, but steel belt wound continuously reinforced composite pipes have the problems of easy corrosion and heavy pipe body weight. [0004] Chinese patent 200710013071.5 discloses the "Manufacturing Method of Polyethylene Glass Fiber Impregnated Composite Pipe" which can solve the problem that the above-mentioned steel belt winding pipe is easy to be corroded, but this method can only be made to a fixed length, and the glass fiber must be rolled Put it into the resin tank, and after impregnated with fat, it will...

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Problems solved by technology

[0003] Steel tape wound continuous reinforced composite pipes are widely used in oil field transportation pipelines, but steel tape wound continuous reinforced composite pipes have the problems of being easily corroded and heavy pipe body

[0004] Chinese patent 200710013071.5 discloses the "Manufacturing Method of Polyethylene Glass Fiber Impregnated Composite Pipe" which can solve the problem that the above-mentioned steel belt winding pipe is easy to be corroded, but this method can only be made to a fixed length, and the glass fiber must be rolled Put it into the resin tank, and after impregnated with fat, it will be evenly wound on the pipe wall of the polyethylene pipe to form a reinforcement layer. This will take several hours of curing and curing treatment, and the production process is relatively complicated.

[0005] Therefore, it is of great significance to solve the above-mentioned problems of easy corrosion, bulky structure and complicated manufacturing process.

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