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Novel modeling and controlling method of drain pipe network hydraulics system

A drainage network and system modeling technology, applied in waterway systems, sewage discharge, general control systems, etc., can solve the problems of time-consuming numerical calculation methods, unfavorable real-time control, complex calculations, etc.

Active Publication Date: 2011-09-14
ZHEJIANG SUPCON INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The model requires more variables and the calculation is more complicated
[0005] 2. They are all numerical calculation methods, and the results are not accurate enough
[0006] 3. The numerical calculation method is time-consuming, which is not conducive to real-time control

Method used

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  • Novel modeling and controlling method of drain pipe network hydraulics system
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  • Novel modeling and controlling method of drain pipe network hydraulics system

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Embodiment Construction

[0045] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions.

[0046] The steps of the present invention are as follows:

[0047] 1. By analyzing the hydraulic characteristics of water flow in urban drainage pipes in my country, combined with the law of conservation of mass and law of conservation of momentum, the Saint-Venant equations applicable to the water flow characteristics of drainage pipes are obtained

[0048]

[0049] According to the properties of the pipes of the pipe network, and the water flow information of the pipe network. First obtain the required parameters of the equations, including pipe diameter, circumference, pipe length, water input flow rate and flow velocity.

[0050] 2. Since it is impossible to use the analytical method to obtain the solution of the original equations, the equations must be simplified to a certain extent. The system of equations is linearized by Taylor...

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Abstract

The invention relates to a novel modeling and controlling method of a drain pipe network hydraulics system. The conventional computation method is more time-consuming and not beneficial to real-time control. The novel modeling and controlling method disclosed by the invention is a method for rapidly computing the water depth of a pipeline by utilizing a transfer function model. Through the adoption of the method disclosed by the invention, the regional sewage overflow pollution is minimized on the premise of fully utilizing all water storage equipment of a system so that the urban flood-prevention and anti-waterlogging capabilities are improved; in addition, a basis is settled for the conversion from manual operation to automatic operation of a combined sewerage system; meanwhile, the situation that sewage overflow happens while residual water storage systems are idle at a specific region is avoided; and therefore the regional sewage overflow pollution is finally minimized.

Description

technical field [0001] The invention belongs to the field of urban drainage, and specifically relates to a method for deriving a hydraulic model suitable for drainage pipes on the basis of Saint-Venant's equations. Background technique [0002] The drainage system of many large cities at home and abroad still adopts the combined drainage system, which is a system that mixes domestic sewage, industrial wastewater and rainwater in the same set of ditches. However, with the continuous expansion of the city and the frequent occurrence of rainfall, the combined drainage pipes have overflowed, which has brought serious environmental pollution problems. [0003] One method of solving the hydraulic model of drainage pipe flow based on Saint-Venant's equations is to use implicit finite difference numerical solution. Another method is the characteristic line method. Both methods are numerical calculation methods. But the disadvantages of both are: [0004] 1. The model requires mo...

Claims

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Application Information

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IPC IPC(8): G05B17/02E03F1/00
Inventor 王建中鲁仁全薛安克徐哲何杨
Owner ZHEJIANG SUPCON INFORMATION TECH CO LTD
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