Method and device for monitoring pipeline leakage
A pipeline leakage and pipeline technology, which is applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of high false alarm rate in the pipeline leakage monitoring system, prevent the expansion of leakage accidents, reduce fluid loss, and respond quickly speed effect
Active Publication Date: 2014-08-06
PIPECHINA SOUTH CHINA CO
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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
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[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 positioning 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 take out the leakage signals; at the same time, the GPS global positioning system collects the time for the leakage acoustic wave signals to pass 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 propagati...
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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 of dynamic 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 positioned by 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 detection 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 people pay attention to the problem of 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 wi...
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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