Method for building municipal pipeline hydraulic model

A hydraulic model and construction method technology, applied in the field of municipal engineering information, can solve problems such as long calculation time and result error

Inactive Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention solves the problems of long calculation time and difficult estimation of result errors existing in the existing pipeline network hydraulic model construction method

Method used

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  • Method for building municipal pipeline hydraulic model
  • Method for building municipal pipeline hydraulic model
  • Method for building municipal pipeline hydraulic model

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Experimental program
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specific Embodiment approach 1

[0043] Specific implementation mode one: combine figure 1 To describe this embodiment,

[0044] A method for constructing a hydraulic model of a municipal pipe network, comprising the following steps:

[0045] Step 1. Obtain the pipe network topology, node pipe section elevation, water pump performance curve and valve opening information of the pipe network system by obtaining design materials such as pipe network system design and construction drawings, and establish a pipe network static database;

[0046] The topology structure includes node and pipe section information; involving nodes, pipe sections and resistance numbers: a node refers to a connecting node at a branch of a pipe network, and the flow rate of the pipe section connected to a node is different; a pipe section generally refers to a pipeline, and for two pipelines connected There is actually a branch at the branch but there is no flow at the branch, that is to say, two connected pipes with the same flow rate ...

specific Embodiment approach 2

[0071] The specific process of collecting node pressure and pipe flow observation data under multiple working conditions described in step 3 of this embodiment is as follows:

[0072] Obtain pressure and flow observation data by using the pressure and flow test devices set up at nodes and pipe sections in the pipe network under fire, night and normal hydraulic conditions.

[0073] Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0074] In this embodiment, the pressure and flow observation data obtained by using the pressure and flow test devices installed at the nodes and pipe sections of the pipe network under fire protection, night and normal hydraulic working conditions are 2:00-3:00 at night, that is, the nighttime hydraulic pressure The working condition is the hydraulic working condition between 2:00-3:00.

[0075] Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to a method for building a municipal pipeline hydraulic model, relates to the technical field of municipal engineering information, and in particular relates to a method for building a pipeline hydraulic model. According to the method, the problem that the existing method for building the pipeline hydraulic model is long in computing time and difficult to estimate result error is solved. According to the method, a pipeline static database is built through obtaining the design information of a pipeline system; the number of minimal observation points is determined according to a pipeline flow equation and a pipeline energy equation; the node pressures and pipe section flow observation data under multiple working conditions are collected; the flow direction in each pipe section is determined and a directed graph which can represent the flow directions is obtained; then the resistance parameter of each pipe section is extracted, the directed graph is endowed with the values of the resistance parameters of the pipe sections, thus the building of the pipeline hydraulic model is completed and the reliability of the pipeline hydraulic model is verified until the pipeline hydraulic model meeting the requirement of pipeline analysis is obtained. The method is applicable to building the pipeline hydraulic model in the field of municipal engineering information technology.

Description

technical field [0001] The invention relates to the technical field of municipal engineering information, in particular to a method for constructing a pipe network hydraulic model. Background technique [0002] With the development of urban construction, the water supply and heating pipe network will change every year due to expansion, and the resistance of each pipe section will also change accordingly. This will cause a certain difference between the model identified by historical data and the actual pipe network, resulting in the accuracy of the model. Difficult to meet industrial requirements. Therefore, it is necessary to establish a hydraulic model that reflects the real-time state of the pipeline network. [0003] As early as the 1980s, foreign scholars used the least square method to identify and check the parameters of the pipe network, and then established the hydraulic model of the pipe network. On the basis of these studies, Savic applied two flow regime models...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/367G06F2113/14
Inventor 刘永鑫金虹黄锰
Owner HARBIN INST OF TECH
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