A continuous fiber reinforced pressure pipe and its forming process

Abstract

The invention relates to a continuous fiber reinforced pressure pipe and a forming process thereof. In order to solve the problems that pipeline mechanical property is affected by layering due to insufficient fusion between a fiber layer and a plastic layer in a current pipeline, an outer reinforcing rib and a base pipe are delaminated, and the reinforcing rib is unreasonable in structure, is incapable of continuously winding, is high in manufacturing cost and is low in ring stiffness, the continuous fiber reinforced pressure pipe comprises the base pipe which is composed of the plastic layer and the fiber layer. The continuous fiber reinforced pressure pipe is characterized in that a spiral tubular reinforcing rib is wound and fused on the outer surface of the base pipe. An integral product is obtained by continuous base pipe winding and forming, tubular reinforcing rib winding and base pipe fusing. The continuous fiber reinforced pressure pipe is relatively light in mass, and is high in ring stiffness, and solves the transportation problem of large-caliber pipes.

Description

Technical field [0001] The invention relates to the technical field of pipe manufacturing, in particular to a continuous fiber reinforced pressure pipe and a molding process thereof. Background technique [0002] Continuous winding pipe is a large-diameter pipe manufacturing method that has been widely used in recent years. It is processed by melting materials such as plastic and compounded into a pipe product with various structures. For example, a thermoplastic composite pipe provided by the patent publication number CN203051987U includes a thermoplastic pipe body. The outer peripheral wall of the pipe body is covered with one or more continuous fiber reinforced thermoplastic composite material prepreg yarn layers. The fiber reinforced thermoplastic composite material prepreg yarn layer is extruded and covered with a thermoplastic protective layer. Another example is the patent publication number CN102700253A discloses a method of continuous spray marking on the outer wall of ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of delamination caused by insufficient melting between the fiber layer and the plastic layer in the existing pipeline, which affects the mechanical properties of the pipeline, the delamination between the external reinforcement rib and the base pipe, and the unreasonable structure of the reinforcement rib itself, which cannot Continuous winding, resulting in high cost and low ring stiffness, provides a continuous fiber-reinforced pressure pipe with a reasonable structural design, which makes each component completely fused into one, and has an ideal load-bearing structure and its forming process

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