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Pipe safety evaluation device and method based on strain detection

A technology for safety evaluation and piping, applied to measuring devices, applying stable tension/pressure to test the strength of materials, instruments, etc., can solve problems such as cumbersome process and measurement point determination error, and achieve simple and efficient detection scheme and real-time test process visible effect

Active Publication Date: 2018-04-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires finite element modeling and analysis to determine the dangerous section of the pipeline. The process is relatively cumbersome, and there are certain errors in the determination of measuring points.

Method used

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  • Pipe safety evaluation device and method based on strain detection
  • Pipe safety evaluation device and method based on strain detection
  • Pipe safety evaluation device and method based on strain detection

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] Embodiment 1, with reference to attached Figure 1-4 , a kind of pipeline safety evaluation device based on strain detection mentioned in the present invention, its technical scheme is: including test bench 1, pipeline 2, pipeline fixing and axial displacement loading device, lateral displacement loading device, pipeline internal pressure loading device, Strain detection and analysis device,

[0044] The left column of the test bench 1 has a plurality of threaded holes, which are connected to the left flange 3 of the pipeline, and the left end of the pipeline 2 is fixed. The right column of the test platform 1 is equipped with a lateral displacement loading device, which is used to adjust and fix the position of the pipeline. In the horizontal position, a plurality of base connection threaded holes 9 are symmetrically opened on the bottom of the test bench 1, so that the test bench is fixedly connected to the foundation;

[0045] The pipeline 2 is a stainless steel sea...

Embodiment 2

[0064] Embodiment 2, with reference to attached Figure 5 , the difference from Embodiment 1 is that the reinforcing ribs 8 for radial displacement of the present invention are provided with four sets of ribs of elongated structure, which are respectively fixed on the upper, lower, left, and right sides of the inner wall of the right flange 4, and surround multiple sets of transverse ribs. On the outside of the threaded hole 16 for position fixing, the cross-section forms a square structure, and one or more threaded holes are provided on each reinforcing rib 8 for radial displacement, which are used to install the lateral displacement loading bolt 11 of the pipeline. The present invention can also To achieve the lateral displacement of the pipeline.

Embodiment 3

[0065] Embodiment 3, with reference to attached Image 6 , the difference from Embodiment 1 is that the ribs 8 for radial displacement of the present invention are composed of two sets of ribs with elongated structures and two sets of ribs with arc structures, which are fixed on the right flange 4 respectively. The upper, lower, left, and right sides of the inner wall are surrounded by multiple groups of threaded holes 16 for lateral position fixing. The cross-section forms a square structure, and one or more threaded holes are provided on each reinforcing rib 8 for radial displacement, which are used for installing pipelines. The lateral displacement loads the bolt 11, and the present invention can also realize the lateral displacement of the pipeline.

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Abstract

The invention relates to a pipeline safety evaluation device and method based on strain detection. According to the technical scheme, the pipeline safety evaluation device comprises a testing platform, a pipeline, a pipeline fixing and axial displacement loading device, a transverse displacement loading device, a pipeline internal pressure loading device and a strain detection and analysis device,and the pipeline is installed on the testing platform through the pipeline fixing and axial displacement loading device and the transverse displacement loading device, is provided with the pipe internal pressure loading device and is connected with the strain detection and analysis device through a cable line to conduct detection and analysis. The pipeline safety evaluation device has the advantages that a small physical simulation test of a buried pipeline geological disaster multiple-displacement load effect can be conducted, strain of a pipe danger point can be determined, the pipeline safety evaluation device is used for safety evaluation of a buried oil gas pipeline under the effect of geological disasters of a fault, a landslide and the like, and a basis is provided for buried pipeline safe operation; the pipeline safety evaluation device has the advantages that the testing process is visible, the detection scheme is simple and efficient, and the pipeline safety evaluation device is not only applicable to pipeline model detection demonstration, but also can be applied and popularized in engineering.

Description

technical field [0001] The invention relates to the field of pipeline engineering, in particular to a pipeline safety evaluation device and method based on strain detection. Background technique [0002] Pipelines are one of the main transport carriers of oil and gas. In recent years, with the construction of a number of new pipeline projects represented by the West-to-East Gas Pipeline, as of 2015, my country's long-distance oil and gas pipelines have a total mileage of 108,700 kilometers, forming a pipeline transportation network that traverses east-west and north-south. Due to the advantages of buried laying, buried pipelines have become an important means of long-distance transportation of crude oil, refined oil, natural gas and other media. Buried pipelines cover a wide area and have to pass through various complex geological environments. Buried pipelines in service are inevitably threatened by geological disasters, such as fault dislocation, landslides, debris flows,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/12G01N3/06
CPCG01N3/06G01N3/08G01N3/12G01N2203/0019G01N2203/0048
Inventor 黄小光徐国强王皓王日颖温博通吴梦影王永进
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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