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

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...

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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 based on nighttime pressure regulation and actual measurement, which can solve the existing problems of high cost, Problems such as low efficiency and low positioning accuracy

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