The construction method of the non-stop production bump opening of the pipeline under pressure

A technology of pipeline and construction method, applied in the field of pipeline docking construction, can solve the problems of inconvenient replacement of the hole opener, inconvenient repositioning of the hole opener, etc., to reduce the risk of repeated construction, improve the service life, and ensure the effect of sealing.

Active Publication Date: 2020-06-23
THE 14TH METALLURGICAL CONSTR GRP YUNNAN INSTALLATION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. When the aperture of the hole is large, due to the serious wear on the hole saw, once the hole is not opened, it is extremely inconvenient to replace the hole saw, especially when a certain gap is drilled and the pressure in the pipeline is high. , it is inconvenient to reposition the hole saw

Method used

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  • The construction method of the non-stop production bump opening of the pipeline under pressure
  • The construction method of the non-stop production bump opening of the pipeline under pressure
  • The construction method of the non-stop production bump opening of the pipeline under pressure

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Embodiment Construction

[0041] Combine Figure 1-7 The shown construction method for the non-stop production of the pressurized pipelines includes the following steps: when preparing for work, since the pipes encountered are all pressurized and in working conditions, adequate safety precautions should be taken depending on the location of the bump. In the position below the ground, it is necessary to do well in anti-collapse work of potholes, and to do well in anti-fall protection for aerial operations. It is best to build a firm operating platform.

[0042] A. Welding of short pipe 1 with flange:

[0043] Select the joint position on the main pipe 4 according to the design requirements, weld a short pipe 1 at the joint position, one end of the short pipe 1 is provided with a first flange 3 for connecting with the gate valve 2, and the other end of the short pipe 1 is welded to the main pipe 4 above; the inner diameter of the short tube 1 usually needs to be greater than the design reaming size by more t...

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Abstract

The invention relates to the technical field of pipeline docking construction and aims to provide efficient and stable construction method of non-stop contact opening for pressurized pipeline. The technical scheme relates to a construction method of non-stop contact opening for pressurized pipeline, including the following steps: A, welding a flanged short pipe; B, installing a gate valve; C, checking tightness; D, installing a reaming device; E, reaming; F, removing the reaming device; G, connecting a pipe. The method can stably and effectively detect the sealing property between the main tube and the short tube during welding and the sealing property of the connection between the gate valve and the short pipe, so as to quickly and conveniently realize the non-stop contact opening construction of the main tube and the branch pipe, reduce the risk of duplicate construction, and improve the efficiency of the construction as a whole and speed up the construction schedule.

Description

Technical field [0001] The invention relates to the technical field of pipeline docking construction, in particular to a construction method for non-stop production of pressure pipelines. Background technique [0002] In industrial production and civil life, because the medium in many pipelines is related to the production and people's lives of countless production departments, especially the medium supervisor, the production of other branch pipes is not allowed to stop. The suspension of production brings about the comprehensiveness of relevant departments. Stop production and inconvenience of life, so convenient, safe, and quick opening method is the key to solving this kind of encounter problem. [0003] At present, the main method used in the construction of the collision between the main pipe and the branch pipe is to weld a short pipe with a flange at the meeting position of the main pipe and the branch pipe, and then install a gate valve on the short pipe. After the install...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D75/00
CPCE03B7/00
Inventor 吴江锐刘晓伟蒋黎刚张绍铭赵德明魏东龙者邹大祥
Owner THE 14TH METALLURGICAL CONSTR GRP YUNNAN INSTALLATION ENG CO LTD
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