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Method for accurately positioning leakage points of water supply networks

A precise positioning and leakage technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems that the leakage monitor cannot obtain the precise location of the leakage point, leakage, etc., so as to improve the efficiency of leakage monitoring and reduce the cost of pipelines. Effect of Net Leakage Rate

Active Publication Date: 2012-05-30
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the leakage monitor cannot obtain the precise position of the leakage point, the present invention provides a method for locating the leakage position using the leakage monitor, which can effectively improve the efficiency of leakage monitoring

Method used

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  • Method for accurately positioning leakage points of water supply networks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Leakage monitor layout: required for figure 2 The pipeline shown is used for leakage monitoring, and its diameter is 100mm. According to the principle of the layout of the leakage monitor, the layout distance is between 150m and 200m. The layout results are as follows: figure 2 shown.

[0019] Leakage signal collection: On the 5th day after the monitoring instrument was deployed, the signal was collected, and it was found that the No. and NO.4 leakage monitor signal strengths are 15 and 13 respectively, then the NO.3 leakage monitor number is designated as A, the NO.2 leakage monitor is B, and the NO.4 leakage monitor is D .

[0020] Positioning of the leakage point: measure the distance between AB and AD to be 160m, and the distance between AD to be 170m, take the attenuation coefficient b as 25, and substitute it into the formula described in step 3 of the technical solution to obtain x=55. That is, the leakage point is located between the two monitors AB and 55 ...

Embodiment 2

[0022] Leakage monitor layout: required for figure 2 The pipeline shown is used for leakage monitoring, and its diameter is 400mm. According to the principle of layout of leakage monitors, the layout distance is between 100m and 150m. The layout results are as follows: figure 2 shown.

[0023] Leakage signal collection: On the 3rd day after the monitoring instrument was deployed, the signal was collected, and it was found that No. 4 leakage monitoring instrument issued a leakage alarm signal, which was prompted as "leakage point", and its signal strength was 30. No. 3 and NO.5 leakage monitor signal strengths are 15 and 17 respectively, then NO.4 leakage monitor number is designated as A, NO.5 leakage monitor is B, and NO.3 leakage monitor is D .

[0024] Positioning of the leakage point: measure the distance between AB and AD to be 110m, and the distance between AD to be 115m, take the attenuation coefficient b as 35, and substitute it into the formula described in step 3...

Embodiment 3

[0026] Leakage monitor layout: required for figure 2 The pipeline shown is used for leakage monitoring, and its diameter is 600mm. According to the principle of layout of leakage monitors, the layout distance is between 60m and 100m. The layout results are as follows: figure 2 shown.

[0027] Leakage signal collection: On the third day after the monitoring instrument was deployed, the signal was collected, and it was found that No. 2 leakage monitoring instrument issued a leakage alarm signal, which was prompted as "suspicious leakage point", and its signal strength was 27, and NO.1 The signal strengths of No. 1 and No. 3 leak monitors are 16 and 14 respectively, so the number of No. 2 leak monitor is A, the No. 1 leak monitor is B, and the No. 3 leak monitor is d.

[0028] Positioning of the leakage point: measure the distance between AB and AD to be 65m, and the distance between AD to be 70m, take the attenuation coefficient b as 45, and substitute it into the formula de...

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Abstract

The invention discloses a method for accurately positioning leakage points by using monitoring signals of leakage monitoring instruments. The technical principle of the method is as follows: firstly arranging the leakage monitoring instruments on a pipeline at intervals, and then carrying a signal collecting host machine to collect the signals of the leakage monitoring instruments on the second day or any day after the leakage monitoring instruments are arranged. The accurate positions of the leakage points are determined by using the signal attenuation law of sound in the pipeline according to the signal strength of the monitoring instruments sending out leakage alarm signals and the two nearest monitoring instrument at the two sides. Compared with the traditional method for monitoring the leakage of urban water supply networks, the method has the advantage of being capable of accurately positioning and greatly improving the efficiency of leakage monitoring as well as effectively reducing the leakage rate of pipe networks.

Description

technical field [0001] The invention relates to a method for precisely locating the leakage point of a water supply pipe network, in particular to a method for precisely locating the leakage point of an urban water supply pipe network by using a leakage monitor. Background technique [0002] The urban water supply network plays a vital role in the normal production and life of the city. However, throughout the world, the leakage of the urban water supply network is very serious, resulting in a waste of resources. The monitoring and management of leaks have attracted the attention of relevant departments and invested a lot of manpower, material and financial resources. [0003] At present, the most widely used leak detection method is the listening leak detection method. Among them, the manual leak detection method has been used for the longest time, but the efficiency of this method is relatively low. In recent years, some cities at home and abroad have used a leak detecto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02
Inventor 徐强陈求稳刘锐平李伟峰
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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