Urban water supply system leakage monitoring method based on dynamic district metering area (DMA) partitioning

A water supply system, dynamic technology, applied in the water supply pipeline system, water supply equipment, water supply main pipeline, etc., can solve problems such as reducing the service life of water supply infrastructure, water environmental pollution, water quantity and quality safety issues, and achieve DMA internal pressure and water quality The effect of uniform improvement, reduction of operation and management costs, and improvement of leakage monitoring efficiency

CN110185092AActive Publication Date: 2019-08-30ZHEJIANG UNIV
5 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-08-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an urban water supply system leakage monitoring method based on dynamic district metering area (DMA) partitioning. The urban water supply system leakage monitoring method comprises the following steps: a water supply network hydraulic model is established, and flow and pressure parameters of the model are corrected; traditional static DMA partitioning is determined, M connecting pipelines are arranged between DMAs, flowmeters are mounted on two of the pipelines, and remote control valves are mounted on the remaining connecting pipelines; DMA dynamic partitioning is achieved by dispatching the remote control valves; leakage alarm threshold values of the dynamic DMAs are determined; and the night flow of the dynamic DMAs is analyzed, specifically, the night flow of the dynamic DMAs is composed of legal water consumption and leakage ullage, the inlet flow and the outlet flow of the dynamic DMAs are analyzed, and if the night flow of one certain dynamic DMA exceedsthe corresponding leakage alarm threshold value at the night low-peak water utilization period, it is explained that leakage exists in the dynamic DMA. According to the method, water utilization tailends in a water supply system are reduced, and the water supply quality is improved; and the higher water supply pressure can be provided during the water supply peak so as to guarantee the peak water-supply quantity safety.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the fields of municipal engineering and urban water supply pipe networks, in particular to a method for monitoring leakage of urban water supply systems based on dynamic DMA partitions. Background technique

[0002] The current problems in the field of fresh water resources are: on the one hand, the fresh water resources are scarce, the water environment is seriously polluted, and the treatment is very difficult; Resource scarcity has only worsened. The problem of pipe network leakage not only leads to the waste of water resources, but also increases the cost of production, management and maintenance of enterprises, reduces the service life of water supply infrastructure, and even causes secondary disasters such as urban water supply crisis, traffic interruption and secondary pollution of pipe network .

[0003] Independent Metering Area (DMA) management of the water supply network is one of the most effective ways to reduce ...

Examples

Embodiment Construction

[0022] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings. It should be noted that the specific implementation is only a detailed description of the present invention and should not be regarded as a limitation of the present invention.

[0023] A kind of urban water supply system leakage monitoring method based on dynamic DMA partition of the present invention, see figure 2 , including the following steps:

[0024] (1) Establish a hydraulic model of the water supply network, and correct the flow and pressure parameters of the model, so that the pressure error is within 10%, and the flow error is within 15%, so as to meet the accuracy requirements of the model engineering application;

[0025] (2) According to the hydraulic model obtained in step (1), determine the traditional static DMA partition, set the number of DMA connecting pipes as M, install a flowmeter on the inlet and outlet pipes in...