Method and device for manufacturing pipeline crack defects

A manufacturing method and pipeline technology, applied in the preparation of test samples, etc., can solve the problems of inaccurate manufacturing of pipeline crack defects, achieve the effect of accurate position and size, meet technical requirements, and ensure position and accuracy

Active Publication Date: 2018-09-04
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for manufacturing pipeline crack defects to solve the technical problem of inaccurate manufacturing of pipeline crack defects in the prior art

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  • Method and device for manufacturing pipeline crack defects
  • Method and device for manufacturing pipeline crack defects
  • Method and device for manufacturing pipeline crack defects

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Embodiment Construction

[0042] Embodiments of the present invention provide a method and device for manufacturing pipeline crack defects to solve the technical problem of inaccurate manufacturing of pipeline crack defects in the prior art.

[0043] The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0044] A method for manufacturing pipeline crack defects is provided, including: determining the etching rate of the pipeline by a laser etching device under the first power; determining the etching time corresponding to each position of the pipeline crack defect on the pipeline through the etching rate; Operate the laser etching device at a certain power, and etch at various positions on the pipeline according to the etching time. That is to say, a reasonable position of the crack defect in the welding material is designed, and the size is also controlled more precisely. In addition, the laser etchin...

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Abstract

The invention discloses a pipeline crack defect manufacturing method and a pipeline crack defect manufacturing device. The method comprises the steps of determining the etching velocity to a pipeline under a first power by a laser etching device; determining the etching duration of the pipeline crack defect corresponding to each position on the pipeline; and running the laser etching device under the first power, and etching each part of the pipeline according to the etching duration.

Description

technical field [0001] The invention relates to the technical field of oil and gas pipeline systems, and discloses a method and device for manufacturing pipeline crack defects. Background technique [0002] In-pipeline detection can detect defects in oil and gas pipelines under the normal operation of the pipeline. Accurately evaluating the hazard degree of pipeline defects plays an important role in pipeline integrity management. The hydrostatic blasting test of pipelines with crack defects is a basic means to test the evaluation criteria of pipeline crack defects, and the precise processing of the shape and size of crack defects is the basic requirement for the successful development of pipeline hydrostatic pressure blasting tests. [0003] For the processing of pipeline welding crack defects, the method of grinding wheel grinding can be used in simple cases, but the top of the crack defects processed by the grinding wheel grinding method has sharp edges and corners, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 雷铮强陈健王富祥王婷周利剑张华兵郑洪龙杨辉玄文博李明菲项小强李振宇杨宝龙王洪涛崔炜
Owner PIPECHINA SOUTH CHINA CO
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