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Method, device and apparatus for determining strain and stress of pipeline

A pipeline strain and stress technology, applied in design optimization/simulation, computer-aided design, special data processing applications, etc., can solve the inaccurate stress and strain of pipelines, the inaccurate grasp of pipeline bending, and the inability to accurately describe the three-dimensional shape of pipelines, etc. problem, to achieve the effect of accurate stress and strain of pipeline and reduce coordinate error

Active Publication Date: 2021-01-29
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the vast majority of oil and gas pipelines are buried underground, this method cannot accurately grasp the bending of the pipeline, and thus cannot accurately describe the three-dimensional shape of the pipeline, making the calculated stress and strain of the pipeline inaccurate

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  • Method, device and apparatus for determining strain and stress of pipeline
  • Method, device and apparatus for determining strain and stress of pipeline
  • Method, device and apparatus for determining strain and stress of pipeline

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Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments in this specification, not all of them. Based on one or more embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of the embodiments of this specification.

[0020] Hereinafter, a specific application scenario is taken as an example to describe the implementation of this specification. specific, figure 1 It is a schematic flowchart of an embodiment of a method for determining pipeline strain and stress provided in this specification. Although this description provides the method opera...

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Abstract

The embodiment of the invention provides a method, a device and an apparatus for determining strain and stress of a pipeline. The method comprises the following steps: acquiring three-dimensional coordinate data corresponding to the center line of a straight pipe section, wherein the three-dimensional coordinate data corresponding to the center line of the straight pipe section is obtained by removing elbow coordinate data from coordinate data corresponding to the center line of a target pipeline; projecting the three-dimensional coordinate data corresponding to the center line of the straightpipe section in different directions to obtain projection data of the straight pipe section in different directions; calculating the bending curvature of each coordinate point on the center line of the straight pipe section based on the projection data of the straight pipe section in different directions; and determining the strain and stress of each coordinate point on the center line of the straight pipe section in the target pipeline according to the bending curvature. By utilizing the embodiment of the invention, the three-dimensional shape of the pipeline can be accurately described, sothat the calculated stress and strain of the pipeline are more accurate.

Description

technical field [0001] The present application relates to the technical field of oil and gas pipeline safety, in particular to a method, device and equipment for determining pipeline strain and stress. Background technique [0002] Oil and gas pipelines are an important means of transporting oil and natural gas. In recent years, due to the advantages of high efficiency, cost saving, convenient transportation, high land utilization rate and low environmental pollution, pipeline transportation has developed rapidly. According to statistics, as of the end of 2016, the total mileage of my country's onshore oil and gas pipelines has exceeded 120,000 kilometers, and large-scale construction will continue. However, due to decades of continuous operation, most oil and gas pipelines have gradually aged, and there are generally potential dangers. If the pipeline is greatly strained or even broken, it will cause serious economic losses and environmental pollution. Therefore, it is b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/18G06F30/20G06F113/14G06F119/14
CPCG06F30/18G06F30/20G06F2113/14G06F2119/14
Inventor 帅健王宇张银辉李云涛吕志阳张怡
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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