Continuous fiber prepreg tape inner layer wall reinforced corrugated pipe and production equipment thereof

Abstract

The invention discloses a continuous fiber prepreg tape inner layer wall reinforced corrugated pipe. The corrugated pipe comprises a composite pipe body, a pipe body welding body and a pipe end butt joint opening, and the composite pipe body is composed of a continuous fiber prepreg tape reinforced composite inner layer wall and a structure stiffening corrugated pipe. The composite inner layer wall is composed of an anti-corrosion plastic inner layer, a continuous fiber prepreg tape reinforcing layer and a transition plastic layer, the structure stiffening corrugated pipe is composed of a plastic pipe of a concave structure and a plastic pipe of a circular structure, and the plastic pipe of the concave structure is composed of a built-in hollow body and a plastic supporting body. The plastic pipe of the circular structure is composed of a plastic circular pipe and reinforcing inner ribs. The pipe body welding body comprises an end face butt-joint type body and a lap welding type body. The pipe end butt joint opening comprises a pipe joint and a pipe bell mouth, the pipe joint is formed by inserting a reinforced composite inner layer wall pressure-bearing layer into a pipe end plastic pipe body inner wall in a welding manner, and the pipe bell mouth is composed of a pipe joint, an electric melting sealing belt for preventing an in-pipe medium from leaking and an electric melting plastic fusion ring in butt joint through the pipe end.

Description

technical field [0001] The invention relates to a thermoplastic composite drainage pipe, in particular to a continuous fiber prepreg tape inner wall reinforced corrugated pipe and its production equipment. Background technique [0002] The rain and sewage drainage pipes used in a large number, including thermoplastic double flat wall pipes, internal rib pipes, and structural wall pipes, have the advantages of light weight, good rigidity, recyclability, reuse, and low cost, and are widely used in urban construction in my country It is used in drainage pipe network and rural construction drainage pipe network. [0003] In the reuse of thermoplastic double flat wall pipes, internal rib pipes and structural wall pipes, there are obvious problems, such as: [0004] First, the plastic wall of the pressure-bearing layer is too thin and the impact strength of the pure plastic layer is very low. During pipeline transportation, hoisting and backfilling, it cannot withstand external co...

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Problems solved by technology

[0004] First, the plastic wall of the pressure-bearing layer is too thin and the impact strength of the pure plastic layer is very low. During pipeline transportation, hoisting and backfilling, it cannot withstand external collisions and impacts from sharp objects, and is easily damaged and cracked, resulting in Leakage of rainwater in pipes;

[0005] Second, the thermoplastic drainage pipe without fiber or metal reinforcement composite has a large linear expansion coefficient, and the pipe end installed in the inspection well will become a pipe due to the temperature drop in the area where the temperature difference between day and night is large without backfilling. Shortened, already installed thermoplastic drainage pipe, the end of the pipe will be pulled out from the inspection shaft and cause damage;

[0006] Third, the existing interface technology, the pipe end interface adopts methods such as sleeve socket rubber sealing ring sealing, electric fusion belt fusion sealing, heat shrinkable tape (sleeve) sealing and other methods to prevent interface leakage, because thermoplastic pipes have long-term molecular recrystallization process, the size of the pipe end is in the process of long-term shrinkage, and the long-term shrinkage of the sleeve socket and the socket pipe end is not synchronized, which will cause leakage to the interface that is already in a closed state. It will also cause poor sealing of the interface and promote leakage.

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