Urban water supply pipe network leakage positioning method based on nighttime pressure regulation actual measurement

A water supply pipe network and positioning method technology, applied in design optimization/simulation, special data processing applications, CAD numerical modeling, etc., can solve the problems of urban water supply pipe network leakage, low positioning accuracy, high cost, and save labor costs. , improve efficiency, improve the effect of accuracy

Active Publication Date: 2020-08-21
BEIJING CAPITAL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the problems existing in the prior art, the purpose of the present invention is to provide a method for locating leaks in urban water supply pipe networks b

Method used

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  • Urban water supply pipe network leakage positioning method based on nighttime pressure regulation actual measurement
  • Urban water supply pipe network leakage positioning method based on nighttime pressure regulation actual measurement
  • Urban water supply pipe network leakage positioning method based on nighttime pressure regulation actual measurement

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Embodiment 1

[0050] The embodiment of the present invention provides a method for locating the leakage of urban water supply pipe network based on the actual measurement of pressure regulation at night, which is carried out according to the following steps:

[0051] Step 1: For the urban water supply pipeline network (i.e. DMA) that needs to be located for leaks, establish a corresponding micro-hydraulic model based on the node information, pipeline information and pipeline network topology obtained from the on-site investigation, and determine multiple pressure measurements based on the micro-hydraulic model. Points and each pressure measuring point correspond to the nodes in the monitoring area, and determine the connection mode of each pressure measuring point, and arrange pressure measuring meters in the actual urban water supply network according to the determined pressure measuring point positions (remote transmission pressure measuring meters can be used );

[0052] Step 2, carry ou...

Embodiment 2

[0073] This embodiment provides a method for locating leaks in urban water supply pipe networks based on nighttime pressure regulation measurements, which is carried out according to the following steps:

[0074] Step 1. Select the DMA of a city’s water supply network to model the network and optimize the arrangement of pressure measurement points. The conventional fuzzy clustering method is used to arrange the pressure measuring points, and other conventional methods can also be used to arrange the pressure measuring points) such as figure 2 As shown, the available pressure measurement points and their corresponding regional points are shown in Table 1 (Note: "0" in the table is the filling value):

[0075] Table 1 Available pressure measuring points and their corresponding regional points

[0076]

[0077]

[0078] Step 2. Set the pressure measurement point N29 as the water discharge point for nighttime pressure regulation measurement: at 0:30 in the morning, the DMA...

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Abstract

The invention discloses an urban water supply pipe network leakage positioning method based on nighttime pressure regulation actual measurement. The method comprises the following steps: step 1, establishing a corresponding microscopic hydraulic model according to acquired information of an urban water supply pipe network, determining a plurality of pressure measuring points of the urban water supply pipe network, nodes in corresponding regions and a connection mode, and correspondingly installing pressure measuring meters in the actual urban water supply pipe network; step 2, carrying out nighttime pressure regulation actual measurement on the urban water supply pipe network, and collecting an inlet flow value and a pressure value of each pressure measurement point; step 3, determining apressure measuring hot spot and estimating the leakage water amount according to the acquired inlet flow value and the pressure value of each pressure measuring point; and step 4, adding the estimatedleakage water amount to an area point corresponding to the pressure measurement hot spot for analog calculation to obtain an analog target function, and accurately positioning the position of the leakage point by comparing the actual measurement target function value with the analog target function value. The invention can accurately and efficiently locate the position of the leakage point.

Description

technical field [0001] The invention relates to the field of leakage location in urban water supply pipe network systems, in particular to a method for locating leakage of urban water supply pipe network based on actual pressure regulation at night. Background technique [0002] In today's society where water resources are increasingly scarce, the amount of water leakage in the urban water supply network system cannot be underestimated. Although all countries are constantly exploring the leakage control technology, due to the large total water supply in cities and towns, even if the leakage rate is controlled within 10%, it will be a great waste of water resources alone. [0003] Therefore, how to find out the leakage point in the urban water supply network through efficient technical means and repair it in time has become the top priority of leakage control. The most widely used and more accurate method in actual engineering is the traditional listening method, and there a...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F111/10
CPCG06F30/20G06F2111/10
Inventor 王光辉段博文高金良简彩丁强
Owner BEIJING CAPITAL CO LTD
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