Polytetrafluoroethylene traction pipe

Abstract

The invention discloses a polytetrafluoroethylene traction pipe which comprises an outer pipe, a cylindrical sealing plug, a U-shaped traction ring and a cross-core bolt. The outer diameter and the wall thickness of the outer pipe are the same as those of a dragged polytetrafluoroethylene pipeline. A radial through hole is formed in the position, a half length away from the end, of the cylindrical sealing plug. The cross-core bolt penetrates into the radial through hole. The two ends of the cross-core bolt are fastened through nuts after extending out of the outer pipe and the through hole of the U-shaped traction ring. The problems that in the non-digging tubular product construction process, flattening and breaking are prone to happening are solved, and the polytetrafluoroethylene traction pipe can go into earth by 18 m or above to conduct traction construction, is suitable for construction of cross rivers, buildings, railways, roads and the like without conditions of road surface digging, saves time and labor, and improves the work efficiency and product safety.

Description

Technical field [0001] The invention relates to a polytetrafluoroethylene traction tube. Background technique [0002] Currently, pipelines used in municipal construction are difficult to install on roads, rivers, under buildings, railways, highways and other places. Most of them use methods such as excavation, overhead, and demolition, which have long construction periods and high costs. At present, we try to use HDPE and PP pipes for trenchless construction, but it is necessary to solve the problem of low tensile strength and poor rigidity of the pipes, especially in the deep underground construction is very difficult. [0003] At present, my country already has the technology and ability to manufacture PP pipes, and the pipe thermal welding technology and ability have been solved, but the pipe flattening and fracture are prone to occur during the deep buried construction process. [0004] The existing MPP tube is generally used, but the cost of the MPP tube is relatively high, a...

AI Technical Summary

Problems solved by technology

[0002] The pipelines currently used in municipal construction are difficult to install on roads, across rivers, under buildings, railways, highways, etc.

Most of them use methods such as excavation, elevated, demolition, etc., with long construction period and high cost

At present, we try to use HDPE and PP pipes for trenchless construction, but we need to solve the low tensile strength and poor rigidity of the pipes, especially in deep underground construction.

[0003] At present, my country already has the technology and ability to manufacture PP pipes, and the technology and ability of pipe thermal welding have also been solved, but pipe flattening and fracture are prone to occur in the process of deep burial construction

[0004] The existing MPP tube is generally used, but the cost of the MPP tube is relatively high, and it is not easy to bend when used, and it is not suitable for some places that need to be bent, so it brings inconvenience to the use

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