Saddle-type large-aperture PE pipeline under-pressure repair structure and method

Abstract

The invention relates to a saddle-type large-aperture PE pipeline under-pressure repair structure and method. The structure comprises a PE saddle-type pipe seat and a leakage stopping plate, an electromagnetic insulated heating wire is embedded in a saddle-type cambered surface, contacting with the outer surface of a PE pipeline, of the PE saddle-type pipe seat, a temperature measuring probe is buried in the saddle-type cambered surface, each of the electromagnetic insulated heating wire and the temperature measuring probe is provided with a wiring terminal connected with a power controller and a temperature controller which are arranged externally, the PE saddle-type pipe seat covers at a broken position of the PE pipeline and is integrally fused with the PE pipeline through electromagnetic hot melting, a loose flange is mounted on the PE saddle-type pipe seat in a sleeved manner, an upper port of the PE saddle-type pipe seat is hermetically with a flange cover through the loose flange and a bolt, and the leakage stopping plate covers the broken position of the PE pipeline, is hermetically connected with the PE pipeline and positioned in an inner hole of the PE saddle-type pipe seat. By the saddle-type large-aperture PE pipeline under-pressure repair structure and method, the problem of repairing the broken PE pipeline is converted into simple mechanical plugging, so that under-pressure repairing of the broken position of the PE pipeline is realized conveniently and quickly.

Description

technical field [0001] The invention relates to the damage repair of PE pipes in running state, in particular to a saddle-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...

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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 0.5 meters and a diameter of less than 0.5 meters that appear on the PE pipe body when the PE pipe is in normal operation. Saddle-type large-diameter PE pipe pressure repair structure and repair method for repairing hole-like damage

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