Method and apparatus for detecting leakage of liquid pressure pipeline

A technology for pipeline leakage, liquid pressure, applied in measuring devices, by detecting the appearance of fluid at the leak point, using liquid/vacuum for liquid tightness measurement, etc., can solve liquid pressure pipeline leakage, liquid pressure pipeline leak detection and positioning and other issues

Inactive Publication Date: 2006-04-05
北京埃德尔黛威新技术有限公司
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Problems solved by technology

[0003] The liquid pressure pipeline leakage detection method and device described in the present invention can solve the problem of liquid pressure pipeline leakage detection and positioning, and at the same time provide a pipeline leakage detection method and device with low cost, convenient use and reliable performance

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  • Method and apparatus for detecting leakage of liquid pressure pipeline
  • Method and apparatus for detecting leakage of liquid pressure pipeline
  • Method and apparatus for detecting leakage of liquid pressure pipeline

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Embodiment Construction

[0033] Detection method basic principle of the present invention is as follows:

[0034] When a pipeline leaks, it can generate sound pressure waves with a frequency much higher than that of ordinary water to propagate along the pipeline. The frequency of the leakage noise mainly depends on the size of the leak point, and the propagation speed of the leakage noise mainly depends on the diameter and material of the pipeline; Vibration sensors or acoustic emission sensors at both ends of the pipeline (the leakage point is surrounded by the middle) measure the leakage signal. Since the leakage point may be located in different positions of the pipeline, the time for the leakage sound to reach the two sensors is different. The correlation analysis of the two columns of signals is used. , generally the time difference between the leakage noise reaching the two sensors can be determined. According to the time difference, the distance between the leak point and the two sensors can be...

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Abstract

The invention discloses a liquid pressure pipe leakage measuring method and apparatus which comprises the following steps: positioning the two sensors inside the measuring pipe on the two sides explored pipe wire of the tested leakage pipe to obtain the noise signal, doing high pass filter, signal amplify and auto-gaining to the noise signal, finding the corresponding audio range signal, sending the noise signal to the leakage location analysis system by the cable on by wireless type, ascertaining the time differential of the two sensors by the multi-analysis of the two signals by the leakage location analysis system, computing the distance between the leakage point to the two sensors by the time differential and the transmitting speed of the distance and the sound wave of the two sensors.

Description

technical field [0001] The invention relates to a liquid pressure pipeline leakage detection method and an audio noise location method and device. Background technique [0002] At present, there is no special equipment for leak detection of liquid pressure pipelines in our country. In the form of increasingly scarce water resources, improving water supply utilization is an urgent task for water conservation. On the water pipeline, due to factors such as the quality of the pipeline and the use time, leakage problems occur from time to time. Usually, due to the untimely discovery, only when a large number of leaks occur, are they all discovered, and a large amount of water resources have been wasted before being discovered. In order to reduce the leakage rate of water supply, it is the most effective way to prevent leakage and save water by developing a leakage detection device with low price, convenient operation and reliable performance. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/00G01M3/24G01M3/26
Inventor 杨月仙詹平张雪梅
Owner 北京埃德尔黛威新技术有限公司
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