Flow monitoring point optimizing arranging method for water supply pipe network leakage fault diagnosis

A technology of flow monitoring and fault diagnosis, which is applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., to achieve the effect of improving recognition accuracy

Inactive Publication Date: 2012-11-14
HEBEI AGRICULTURAL UNIV.
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no achievement on the optimal layout of flow monitoring points for the diagnosis of water leakage faults in the pipeline network.

Method used

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  • Flow monitoring point optimizing arranging method for water supply pipe network leakage fault diagnosis
  • Flow monitoring point optimizing arranging method for water supply pipe network leakage fault diagnosis

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Embodiment Construction

[0015] In order to further illustrate the content of the invention, features and effects of the present invention, the following embodiments are listed hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0016] see figure 1 , the model pipe network has a total of 22 pipe sections (No. 1, No. 3, No. 6, No. 7, No. 8, No. 9, No. 19, and No. 20 are concrete pipes; No. 5, No. 10-18, No. 21, No. 22 No. pipe section is steel pipe; No. 2 and No. 4 pipe sections are equivalent water pipes), 14 nodes. Among them, the pipelines are divided into two types: steel pipes (the design value of friction coefficient is c=120), concrete pipes (the design value of friction coefficient is c=110), two pumping station water sources, one water tower water source, and the water surface elevation of the water tower is 74m.

[0017] Table 1 The flow rate of each pipe section of the pipe network under normal working conditions

[0018] Section No...

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Abstract

The invention discloses a flow monitoring point optimizing arranging method for water supply pipe network leakage fault diagnosis. The method includes adding virtual nodes in the middle of each pipe section of a pipe network topological model where pipe explosion or water leakage happens possibly to simulate happening of pipe network explosion accidents by adding node outlet flow at the position of the virtual nodes. When the accidents happen, flow of pipe sections in the whole pipe network can be affected to different extents. For example, flow change value in the pipe section to be inspected is set, and effect rate, namely, sensitivity of water leakage quantity of the pipe section of the virtual section on flow change produced at the position of the pipe section can be expressed. Flow monitoring points are arranged at the pipe sections with high sensitivity, and the monitoring quantity can be mutually independent. A target function optimally arranged is built according to the principle to obtain optimum monitoring point combination results. The method is characterized in that the target function related with the flow sensitivity is built based on flow information monitoring, and the target function is further optimized and calculated to obtain optimum monitoring point combination results.

Description

technical field [0001] The invention belongs to the field of municipal engineering. Specifically, a flow monitoring point arrangement method for water supply pipe network leakage fault diagnosis is provided. Background technique [0002] At present, most of the research on the optimal arrangement of monitoring points in the water supply network is based on sensitivity analysis and cluster analysis, mainly serving the optimal dispatch of the water supply system, and there are many studies on the fault diagnosis of the pipeline network based on water pressure monitoring. At present, there is no achievement on the optimal arrangement of flow monitoring points for the diagnosis of water leakage faults in the pipeline network. Contents of the invention [0003] In order to solve the technical problems existing in the known technology, the present invention provides a flow monitoring point genetic optimization arrangement method for water supply pipe network leakage fault diagn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02
Inventor 郄志红曹欣欣吴鑫淼张志宇季广军吴广聚
Owner HEBEI AGRICULTURAL UNIV.
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