Reinforced thermoplastic pipe (RTP) joint structure and connection method thereof

Abstract

The invention provides a reinforced thermoplastic pipe (RTP) joint structure and a connection method thereof. The RTP joint structure comprises a first RTP, a second RTP, a PE electric melting joint and a GRE reinforced pipe hoop. The first RTP and the second RTP have the same external diameter, and the butt joint end faces of the first RTP and the second RTP are subjected to thermofusion welding. The internal diameter of the PE electric melting joint is matched with the external diameter of the first RTP, and a heating wire is preset and wound inside the PE electric melting joint. The outer wall of the PE electric melting joint is provided with an external thread. The PE electric melting joint simultaneously sleeves the first RTP and the second RTP and is subjected to electric fusion welding to the first RTP and the second RTP through the heating wire, the inner wall of the GRE reinforced pipe hoop is provided with an internal thread matched with the external thread of the PE electric melting joint, and the GRE reinforced pipe hoop is screwed on the external thread of the PE electric melting joint. According to the RTP joint structure, problems that in the prior art, an RTP connection part corrodes easily, is low in high pressure resistance and is subjected to wax deposition and blockage easily can be effectively solved.

Description

technical field [0001] The invention relates to the field of application and installation of polymer materials, in particular to an RTP pipe joint structure and a connection method thereof. Background technique [0002] RTP pipe is the abbreviation of fiber reinforced polyethylene plastic pipe. Because of its corrosion resistance, high pressure resistance and flexibility, it is widely used in land and seabed transportation of oil, steam, water and other fields. Pipeline joints are the key links in the pipeline system, and the way of joints will seriously affect the pressure bearing and anti-corrosion performance of the pipeline, such as figure 1 As shown, the traditional RTP pipe joint method is: insert the left metal connecting pipe 3 into the first RTP pipe 1, use a metal pipe clamp outside the pipe to fix the metal connecting pipe and the RTP pipe together through a press, and the right metal connecting pipe The pipe 4 is inserted into the second RTP pipe 2, and the fixi...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an RTP pipe joint structure and its connection method, which is used to solve the problem that the RTP pipe joints in the prior art are easily corroded, have low high pressure resistance, and have a reduced inner diameter. Easy wax clogging problem

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