Efficient long-distance pipe installation method

A pipeline installation, long-distance technology, applied in the direction of pipeline laying and maintenance, pipes/pipe joints/fittings, machinery and equipment, etc., can solve problems such as waste, achieve low cost, strong color fixing effect, and the effect of the end of the construction period

Inactive Publication Date: 2017-08-18
合肥市闵葵电力工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very important to ensure the cleanliness of the inner wall of the long-distance pipeline after installation. The traditional construction method is to use the above-mentioned chemical cleaning method or the PIG pigging method alone. In view of the fact that the traditional chemical method requires a large amount of chemical cleaning liquid, resulting in a large amount of Waste and environmental pollution are gradually replaced by PIG pigging method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An efficient long-distance pipeline installation method, comprising the following steps:

[0028] (1) Bracket installation: Install the brackets in the order of first underground and then above ground, first large and then small, first high pressure and then low pressure;

[0029] (2) Pipeline pickling and passivation: Put the multi-section pipelines into the pickling passivation solution at 40-50°C for 5-10 minutes, then rinse them with deionized water, and dry them in a dry and ventilated place; , the pickling passivation solution includes the following raw materials in parts by weight: 36 parts of hydrogen peroxide, 22 parts of acetic acid, 10 parts of citric acid, 6 parts of thiourea derivatives, 2 parts of fatty alcohol polyoxyethylene ether, silane coupling agent KH- 792 1.2 parts, polyaspartic acid 8 parts, polyacrylamide 2 parts, gallic acid 7 parts.

[0030] (3) Pipeline welding: the welding material is stainless steel wire with a diameter of 5-10mm, the weldi...

Embodiment 2

[0036] An efficient long-distance pipeline installation method, comprising the following steps:

[0037] (1) Bracket installation: Install the brackets in the order of first underground and then above ground, first large and then small, first high pressure and then low pressure;

[0038] (2) Pipeline pickling and passivation: Put the multi-section pipelines into the pickling passivation solution at 40-50°C for 5-10 minutes, then rinse them with deionized water, and dry them in a dry and ventilated place; , the pickling passivation solution includes the following raw materials in parts by weight: 35 parts of hydrogen peroxide, 18 parts of acetic acid, 12 parts of citric acid, 5 parts of thiourea derivatives, 2 parts of fatty alcohol polyoxyethylene ether, silane coupling agent KH- 550 0.9 parts, polyaspartic acid 7 parts, polyacrylamide 3 parts, gallic acid 6 parts.

[0039] (3) Pipeline welding: the welding material is stainless steel wire with a diameter of 5-10mm, the weldi...

Embodiment 3

[0045] An efficient long-distance pipeline installation method, comprising the following steps:

[0046] (1) Bracket installation: Install the brackets in the order of first underground and then above ground, first large and then small, first high pressure and then low pressure;

[0047] (2) Pipeline pickling and passivation: Put the multi-section pipelines into the pickling passivation solution at 40-50°C for 5-10 minutes, then rinse them with deionized water, and dry them in a dry and ventilated place; , the pickling passivation solution includes the following raw materials in parts by weight: 38 parts of hydrogen peroxide, 20 parts of acetic acid, 13 parts of citric acid, 6 parts of thiourea derivatives, 3 parts of fatty alcohol polyoxyethylene ether, silane coupling agent ND- 1.5 parts of 43, 5 parts of polyaspartic acid, 3 parts of polyacrylamide, 9 parts of gallic acid;

[0048] (3) Pipeline welding: the welding material is stainless steel wire with a diameter of 5-10mm...

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PUM

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Abstract

The invention discloses a high-efficiency long-distance pipeline installation method. The installation method includes the steps of bracket installation, pipeline pickling and passivation, pipeline welding, pressure test, non-destructive flaw detection, purging and dust removal, antirust paint spraying and the like. The installation method of the present invention has high safety factor, reasonable process design, short construction period, and low cost. The pickling passivation and anti-rust paint spraying can ensure that the pipeline is in a sealed and rust-resistant state, and prevent gas leakage, which has significant advantages. social and economic benefits.

Description

technical field [0001] The invention relates to the technical field of pipeline construction, in particular to an efficient long-distance pipeline installation method. Background technique [0002] At present, in petroleum, chemical, natural gas, and water supply supporting projects at home and abroad, the cleanliness of the inner wall of the pipeline for air, oxygen, nitrogen, hydrogen and various gases is quite high, and various industries and enterprise standards have special descriptions for this. Therefore, it is very important to ensure the cleanliness of the inner wall of the long-distance pipeline after installation. The traditional construction method is to use the above-mentioned chemical cleaning method or the PIG pigging method alone. In view of the fact that the traditional chemical method requires a large amount of chemical cleaning liquid, resulting in a large amount of Waste and environmental pollution are gradually replaced by the PIG pigging method. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/024
CPCF16L1/024
Inventor 何飞
Owner 合肥市闵葵电力工程有限公司
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