Method and device for monitoring pipeline leakage

A technology of pipeline leakage and monitoring device, which is applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problem of high false alarm rate of pipeline leakage monitoring system, prevent leakage accidents from expanding, improve sensitivity, and respond quickly. effect of speed

Active Publication Date: 2010-03-31
PIPECHINA SOUTH CHINA CO
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] Affected by the noise of on-site process operations such as valve adjustment, pressurization, start and stop of pumps, etc., the pipeline leakage monitoring system based on dynamic pressure or static pressure alone has the problem of high false alarm rate

Method used

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  • Method and device for monitoring pipeline leakage
  • Method and device for monitoring pipeline leakage

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Embodiment Construction

[0027] Embodiment: use this example to illustrate the specific implementation of the present invention and further illustrate the present invention. This example is an experimental prototype, its composition is as follows figure 1 shown.

[0028] This pipeline leakage monitoring device comprises dynamic pressure sensors 1a, 1b, static pressure sensors 2a, 2b, data acquisition and transmission devices 3a, 3b, GPS global timing system; the two groups of dynamic pressure sensors 1a, 1b and static pressure sensors 2a, The pressure acoustic wave signals measured by 2b are respectively processed by the data acquisition and transmission devices 3a and 3b to extract the leakage signal; at the same time, the GPS global timing system collects the time when the leakage acoustic wave signal is transmitted from the leakage point to the two ends of the monitoring pipe section; after adding and subtracting the collected time The leak point can be located by multiplying by the propagation sp...

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Abstract

The invention provides a method and a device for monitoring pipeline leakage, and relates to the technical field of acoustic wave measurement, flow pressure measurement and pipeline systems. A set ofdynamic pressure sensors (1a) and (1b) and a set of static pressure sensors (2a) and (2b) are respectively arranged at the head end and the tail end of a pipeline respectively; acoustic wave signals measured by the dynamic pressure sensor (1a) and (1b) and the static pressure sensor (2a) and (2b) are processed by data acquisition devices (3a) and (3b) respectively so as to take leakage signals out; a global position system GPS is adopted to determine the time that the leakage acoustic wave signals are transmitted to two ends of a monitored pipeline section; and leakage points can be positionedby adding and subtracting the sampled time and then multiplying the propagation velocity of the acoustic waves in a medium. The method and the device can reliably and accurately judge the leakage happened in the pipeline, improve the monitoring sensitivity, and have high response speed and high positioning precision.

Description

technical field [0001] The invention relates to a pipeline leakage monitoring method and device. It relates to the technical fields of sound wave measurement, fluid pressure measurement and pipeline system. Background technique [0002] Pipeline leakage not only causes huge economic losses, but also causes environmental pollution, casualties, etc. Timely discovery of pipeline accidents and elimination of accidents is an important part of safe production. Therefore, a reliable leakage monitoring system is established to provide continuous and uninterrupted detection of pipelines. , has more and more important significance in the actual safe production. In recent years, more and more attention has been paid to pipeline leakage monitoring and location. [0003] Chinese invention patent application numbers 99107241.3 and 200410019451.6 disclose pipeline leakage monitoring methods based on static pressure, that is, negative pressure wave technology. The document with Chinese i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/06
Inventor 王立坤熊敏谭东杰艾慕阳王洪超周恒彰
Owner PIPECHINA SOUTH CHINA CO
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