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

Abstract

The invention relates to a saddle-type large-diameter PE pipe pressure repair structure and a repair method thereof. It includes a PE saddle-shaped pipe seat and a leak-proof plate. The saddle-shaped curved surface of the PE saddle-shaped pipe seat in contact with the outer surface of the PE pipe is embedded with an electromagnetic insulated heating line and buried with a temperature measuring probe. The electromagnetic insulated heating line, temperature measuring The probes are respectively provided with connecting terminals connected with the external power controller and temperature controller, and the PE saddle-shaped pipe seat is sealed at the damaged part of the PE pipe and fused together with the PE pipe through electromagnetic fusion; the PE saddle-shaped pipe The seat is fitted with a loose flange, and the upper port of the PE saddle-shaped pipe seat is sealed and connected with a flange cover through the loose flange and bolts; the leak-proof plate is sealed at the damaged part of the PE pipeline and is tightly connected with the PE pipeline. And it is in the inner hole of PE saddle-shaped pipe seat. The invention transforms the difficult problem of repairing damaged PE pipes into simple mechanical plugging, thereby conveniently and quickly realizing the pressure repair of damaged parts of PE pipes.

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. Traditiona...

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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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