PE pipe electric heat fusion connection treatment process for municipal pipelines

Abstract

The invention relates to and discloses a PE pipe electric heat fusion connection treatment process for municipal pipelines. A PE pipe connection device is used to connect PE pipes. The PE pipe electric heat fusion connection treatment process for municipal pipelines comprises the following steps of S1: sleeving a PE pipe outside a support assembly and an annular airbag; S2: making the support assembly supported on the inner wall of the PE pipe; S3: inflating into the annular airbag to inflate the annular airbag to a predetermined pressure, and making the annular airbag support on the PE pipe;S4: starting a scraping mechanism to scrape the outer wall of the PE pipe; and S5: starting an electric pole to make a sliding seat slide in the positive direction of a sliding rail. The PE pipe electric heat fusion connection treatment process for municipal pipelines has the advantages of being able to be applied to automatic scraping of various pipe diameters, and to accurately control the cutting length and depth. In addition, the process uses the airbag to inflate to a certain pressure to support the inside of the PE pipe to avoid the phenomenon of uneven cutting caused by deformation of PE pipe due to poor hardness.

Description

technical field [0001] The invention relates to the technical field of pipe fitting processing, in particular to an electrothermal fusion connection processing technology of PE pipes. Background technique [0002] Large-diameter buried PE water supply and gas pipelines are the preferred pipelines for large-scale municipal pipeline projects. The connection problem of this type of pipeline has always been the most concerned issue. Practice has proved that using electrofusion connection is the safest and most reliable way to solve the connection problem. The easiest and most economical method, but how to remove the surface oxide layer of the large-diameter PE pipe before electrofusion welding is the most troublesome problem for the construction unit. At present, the most direct method in the industry is to manually use a manual scraper to plan and scrape the pipe. This not only results in low construction efficiency and high labor intensity, but also seriously affects the const...

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Problems solved by technology

[0002] Large-diameter buried PE water supply and gas pipelines are the first choice for large-scale municipal pipeline projects. The connection problem of this type of pipeline has always been the most concerned issue of people. Practice has proved that the connection method of electrofusion is the safest and most reliable solution The most convenient and economical method, but how to remove the surface oxide layer of large-diameter PE pipes before electrofusion welding is the most troublesome problem for construction units. At present, the most direct method in the industry is to plan and scrape the pipes manually with a manual scraper. This not only results in low construction efficiency and high labor intensity, but also seriously affects the construction period of the project and the welding quality of the pipeline.

In the prior art, the oxide layer on the surface of the PE pipe is usually removed by scraping with a manual scraper, and some even use ordinary blades or glass for processing. This construction method is inefficient, labor-intensive, and the thickness of manual scraping varies. , the operation time is long; in addition, when the mechanical scraper is used to scrape the outer oxide layer of the pipe, because the PE pipe fittings are soft and elastic, the pipe fittings are deformed during scraping, so that the depth of scraping is different, and the welding requirements cannot be met. Seriously affect the overall construction progress and effect

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