Process for cleaning whole inner wall of long pipeline for high-purity gas

Abstract

The invention relates to a process for cleaning the whole inner wall of a long pipeline for high-purity gas. The process includes the following steps that (1), present situation investigation and processing are carried out on the pipeline; (2), rust removal and dedusting cleaning processing is carried out on the inner wall of the pipeline, wherein a leather cup steel brush pipe cleaner and a foam pipe cleaner are pushed through oil-free compressed air to rapidly move in a laid long-distance pipeline in one direction so as to push quantities of residues and other impurities in the long-distance pipeline out of the pipeline; (3), drying processing is conducted on the inner wall of the pipeline, wherein a large-scale compressor and a gas storage tank accumulator are utilized to purge a pipeline system; (4) protection is conducted on a finished pipeline. The process for cleaning the whole inner wall of the long pipeline for high-purity gas is reasonable in design, easy and convenient to operate and especially applied to processing the inner wall of the pipeline for high-purity gas. By the adoption of the process, the construction progress can be quickened, construction quality can be improved, manual operation can be reduced, construction cost can be saved, and efficiency of construction operation is effectively improved.

Description

technical field [0001] The invention relates to the technical field of pipeline inner wall treatment, in particular to an integral process for cleaning the inner wall of a high-purity gas long pipeline. Background technique [0002] The application of high-purity industrial gases is becoming more and more extensive. It is called one of the blood of industry and has an important impact on the high-tech fields of various industries. During the construction process of carbon steel pipelines transporting high-purity oxygen, it is necessary to strictly carry out the inner wall cleaning, degreasing, drying and other processes to meet the "three degrees" requirements of gas purity, dryness, and cleanliness. The existing cleaning technology is a one-way cleaning pipeline, which mainly has the following defects: 1. There are many value-added links, such as manual work is not full, and the time arrangement is not continuous, resulting in relatively high costs. 2. There may be residua...

AI Technical Summary

Problems solved by technology

The existing cleaning technology is a one-way cleaning pipeline, which mainly has the following defects: 1. There are many value-added links, such as manual work is not full, and the time arrangement is not continuous, resulting in relatively high costs

2. There may be residual impurities in the welding joints of the 90 bends of the pipeline, the upper return and the lower return, which cannot be completely cleaned

It takes a long time to clean the oxide scale, which wastes a lot of materials, labor and construction period

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