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Pipeline leakage point locating method and system based on sound emission response

A pipeline leak point and acoustic emission technology, which is applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of poor positioning accuracy, easy to be affected by the environment, and low work efficiency, so as to solve the problem of low work efficiency , reduce economic loss and environmental pollution, and reduce labor intensity

Inactive Publication Date: 2020-10-13
JILIN PROVINCE BAIRUISHENG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a method and system for locating pipeline leaks based on acoustic emission response, aiming to solve the problems of low working efficiency, easy to be affected by the environment, and poor positioning accuracy in existing methods for locating pipeline leaks

Method used

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  • Pipeline leakage point locating method and system based on sound emission response
  • Pipeline leakage point locating method and system based on sound emission response
  • Pipeline leakage point locating method and system based on sound emission response

Examples

Experimental program
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Embodiment 1

[0046] This embodiment provides a pipeline leak location device based on acoustic emission response. For details not disclosed in the pipeline leak location device based on acoustic emission response in this embodiment, please refer to the acoustic emission response-based device in other embodiments. methods for locating pipeline leaks.

[0047] figure 1 is a schematic structural diagram of a pipeline leak location device based on acoustic emission response according to an embodiment of the present application.

[0048] like figure 1 As shown, the pipeline leak location device based on the acoustic emission response specifically includes the pipeline control valve 6, the first acoustic emission sensor 5, the second acoustic emission sensor 51 and the data processing unit 2, specifically:

[0049] The pipeline control valve 6 is used to close or reduce the downstream port of the pipeline to be tested 3, and the stress wave from the downstream port to the upstream port is ge...

Embodiment 2

[0078] Figure 4 A schematic diagram of the steps of the method for locating pipeline leaks based on acoustic emission responses according to an embodiment of the present application is shown in .

[0079] like Figure 4 As shown, the method for locating pipeline leaks based on acoustic emission response in the embodiment of the present application specifically includes the following steps:

[0080] S10: Close or reduce the downstream port pipeline control valve of the downstream port of the pipeline to be tested, and generate a stress wave from the downstream port to the upstream port in the pipeline to be tested. The stress wave is generated by the fluid in the pipeline after the valve blocks the fluid in the pipeline.

[0081] During the operation, the downstream port of the pipeline is reduced by operating the downstream port control valve to quickly close or reduce the valve, and then a stress wave will be generated in the pipeline to be tested and propagate to the upstre...

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Abstract

The embodiment of the invention provides a pipeline leakage point locating method and device based on sound emission response. The locating device comprises a pipeline control valve, a first sound transmitting sensor, a second transmitting sensor and a data processing unit, wherein the pipeline control valve is used for closing or reducing a downstream end opening of a pipeline to be detected, thus stress waves from the downstream end opening to an upstream end opening are generated in the pipeline to be detected, the first sound transmitting sensor is used for receiving the stress waves closeto the downstream end opening of the pipeline to be detected, and opposite stress waves generated by leakage points of the pipeline, the second sound transmitting sensor is use for receiving the stress waves close to the upstream end opening in the pipeline to be detected, and the data processing unit is used for carrying out calculation according to the stress waves close to the downstream end opening of the pipeline to be detected, the opposite stress waves generated by the leakage points of the pipeline, and the stress waves close to the upstream end opening of the pipeline to be detectedto obtain the positions of the leakage points of the pipeline. The pipeline leakage point locating method and device based on sound emission response are easy to operate, high in efficiency and high in locating precision, and labor intensity of labor checking along the line is reduced greatly.

Description

technical field [0001] The present application belongs to the technical field of pipeline detection, and in particular relates to a method and system for locating pipeline leaks based on acoustic emission responses. Background technique [0002] At present, my country's oil, water and pipelines cover the natural gas, crude oil and refined oil backbone networks and urban heating and water supply pipeline networks in most parts of the country. In recent years, pipeline leakage accidents have occurred from time to time, which not only affects normal production, but also causes environmental pollution and waste of resources. At present, there are many pipeline leakage online monitoring systems on the market, but most of these systems cannot detect corrosion development leakage. Judgment and location, especially for buried pipelines, even if the leakage can be judged by operating parameters such as pressure and flow of the pressure-bearing pipeline, it is difficult to locate the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/06
CPCF17D5/06
Inventor 杨凯李秀杰于欣吴秉久赵泽玺李晓峰陈士亮安仲文苏海娜舒喆岩
Owner JILIN PROVINCE BAIRUISHENG SCI & TECH DEV