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A water supply network key valve identification method

A technology of water supply pipe network and identification method, applied in data processing applications, instruments, calculations, etc.

Active Publication Date: 2019-06-28
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, domestic and foreign studies have not used hydraulic performance indicators to analyze the direct impact of valve failure on water cut-off areas and the indirect impact on non-water cut-off areas

Method used

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  • A water supply network key valve identification method
  • A water supply network key valve identification method
  • A water supply network key valve identification method

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Embodiment Construction

[0034] The present invention will be described in detail below with reference to the accompanying drawings and embodiments, but the embodiments of the invention are not limited thereto. A case of a water supply network is chosen to illustrate the effectiveness of the method. The specific implementation steps are as follows:

[0035] (1) Under the basic scenario, that is, all the valves in the water supply network are in normal working condition, the topology analysis and hydraulic analysis of the water supply network are carried out.

[0036] The specific implementation process of this step is:

[0037] (1.1) Selection figure 1 The water supply pipe network shown is taken as an example. Four valve layout schemes are selected here, namely (a) is an N-type valve structure, that is, all pipes connected to a node are equipped with valves, and (b) is an N-1 type. Valve structure, that is, there is only one pipeline without a valve installed on all the pipelines connected to the ...

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Abstract

The invention discloses a water supply network key valve identification method, and relates to the field of water supply pipe network valve intelligent regulation. The method comprises: firstly, setting a basic situation, wherein valves in a water supply pipe network are in a normal state; carrying out topological analysis and pressure-driven water quantity hydraulic simulation on the water supplypipe network, and calculating the values of four indexes including the valve closing number, the total length of pipelines in a partition area, steady-state hydraulic simulation and delay simulation;Secondly, simulating the failure of each valve in sequence according to the number of the valve, repeating the above steps, and calculating four index values again; And finally, sequentially calculating the index values under the condition that the valves fail and the change values of the corresponding index values under the normal work of the valves, determining the degree of influence of valvefailure on the performance of the water supply system, and further identifying key valves in the system. A comprehensive evaluation system of the performance index and the hydraulic index is used forevaluating the valve failure influence, identification of key valves in the system is achieved, and support is provided for a decision maker to formulate a reasonable valve maintenance scheme.

Description

technical field [0001] The invention belongs to the field of intelligent regulation and control of water supply pipe network valves, and in particular relates to a key valve identification method of a water supply pipe network. Background technique [0002] As an important accessory of the water supply network system, the valve has the functions of adjusting the flow of the pipeline, optimizing the pressure distribution of the system and isolating the accident area, so as to ensure the safe and reliable operation of the water supply network system. Due to broken stems or other mechanical problems and valve blockages, the valve may be in a failed state when closing operations are required. According to reports, if the valves in the water supply network system are not tested and maintained every five years, it is estimated that 40% of the valves will be in failure state. Therefore, it is necessary to analyze the impact of valve failure on the entire system and identify the key...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/00G06Q50/06
Inventor 刘海星赵梦珂张弛顾建强
Owner DALIAN UNIV OF TECH
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