Arc-plate type large-diameter PE pipeline under pressure repair structure and its repair method

Abstract

The invention relates to an arc-plate type large-diameter PE pipe pressure repair structure and a repair method thereof, including a leak-proof plate and a PE arc plate, and the leak-stop plate is sealed at the damaged part of the PE pipe through a high-elastic sealing ring and fastening screws; PE The inner arc surface of the arc plate matches the outer surface of the PE pipe, and a groove embedded in the leak-proof plate is arranged in the middle of the inner arc surface, and an electromagnetic insulated heating wire is embedded in the inner arc surface of the outer periphery of the groove and a temperature measuring probe is buried; PE arc The plate is fused with the PE pipe through electromagnetic thermal fusion, and the leak-proof plate is placed in the space formed by the groove on its inner surface and the PE pipe. The invention organically combines mechanical leakage prevention with electromagnetic thermal fusion, mechanical leakage prevention seals the leakage medium, forms an initial seal, creates conditions for the PE arc plate and the original PE pipeline to use electromagnetic thermal fusion fusion, and finally fuses the PE arc plate and the PE pipeline As a whole, it realizes the pressure repair of the damaged part of the PE pipe.

Description

technical field [0001] The invention relates to the damage repair of PE pipes in running state, in particular to an arc-plate type large-diameter PE pipe pressure repair structure and a repair method thereof. Background technique [0002] PE material pipes, especially large-diameter pipes, are being widely used in recent years because of their excellent corrosion resistance, high elasticity and plasticity, easy long-distance laying and long service life. Due to reasons such as manufacturing, installation and force majeure, the pipeline will be damaged or even broken, resulting in waste of materials, production stoppage, environmental pollution and even major accidents. [0003] PE material is a polymer inert material, which is difficult to bond with other materials, and has great elasticity but low stiffness. As the operating pressure of the pipeline changes, the geometric dimensions such as the diameter, length, and thickness of the pipeline will change dynamically. Tradit...

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem of repairing damaged large-diameter PE pipes under pressure, and provides a method that can prevent penetrating cracks with a length of less than 3M and holes smaller than the diameter of the pipe that appear on the PE pipe body when the PE pipe is in normal operation. Arc-plate type large-diameter PE pipe under pressure repair structure and its repair method

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