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Sewage pumping station dynamic control method and system

A technology for dynamic control and sewage pumping stations, which is applied to waterway systems, water supply devices, drainage structures, etc., can solve the problems of low control stability of sewage pumping stations, and achieve the effects of convenient and quick adjustment, prolonging working life, and stable system control

Active Publication Date: 2017-05-31
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a dynamic control method and system for sewage pumping stations to solve the defect of low control stability of sewage pumping stations in the prior art

Method used

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  • Sewage pumping station dynamic control method and system

Examples

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Embodiment 1

[0032] This embodiment provides a dynamic control method for a sewage pumping station, including:

[0033] The liquid level of the upstream pipe network is divided into continuous multi-stage liquid level intervals, and a corresponding target flow rate is set for each liquid level interval, and each target flow rate corresponds to the number of water pump groups turned on.

[0034] Specifically, such as figure 1 As shown, first, according to the operation of the upstream pipeline network, the liquid level range is divided into continuous multi-stage liquid level intervals, that is, the liquid level intervals are discretized to form multi-stage discrete liquid level intervals. Since the liquid level in the upstream pipe network presents different liquid level heights in different time periods, for example, during peak water consumption periods such as lunch and dinner, the liquid level in the pipe network will rise relatively, while at midnight, the pipe network will The fluid...

Embodiment 2

[0046] This embodiment is a control system corresponding to the sewage pumping station control method in Embodiment 1. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only this embodiment will be described. Example differs from Example 1:

[0047] This embodiment provides a dynamic control system for a sewage pumping station, which is controlled by a PLC control system, and the PLC control system includes:

[0048] The water pump group control module is used to set the interval value of the continuous multi-stage liquid level interval divided by the upstream pipe network, and the target flow value set corresponding to each of the liquid level intervals, and each of the target flow values ​​has a corresponding water pump group ; It is used to determine the liquid level interval according to the real-time liquid level of the upstream pipe network, obtain the corresponding target flow r...

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Abstract

The invention relates to the field of sewage treatment system control, and discloses a sewage pumping station dynamic control method and system. The dynamic control method comprises the steps of dividing a water level of an upstream pipe network into multiple sections of consecutive water level ranges, wherein each section of water level range is provided with corresponding target flows, and each target flow is provided with a corresponding water pump group; obtaining the upstream pipe network real-time water level so that a corresponding pump group scheme can be obtained; comparing a water collection pond water level with a target water level, or comparing pump station real-time delivery flow with the target flow, and adjusting a variable frequency pump according to a comparison result to achieve steady state control of the water level of the flow of the water collection pond, wherein the water level range comprises an ascending water level range and an descending water level range which are arranged in a staggered mode. According to the provided sewage pump station dynamic control method and system, based on a PLC control system, the stability of system control and the operation efficiency of a water pump can be improved, and the service life of a pump set can be prolonged, so that the system control long-term operation stability is high, and the sewage pumping station dynamic control system is easy to install and repair.

Description

technical field [0001] The invention relates to the field of sewage treatment system control, in particular to a dynamic control method and system for a sewage pumping station. Background technique [0002] The urban drainage system undertakes the important function of urban sewage collection and treatment, and is an important municipal infrastructure to ensure people's lives, urban environment and urban safety. The safe and effective operation of urban drainage pipe network is also an important guarantee for the quality of urban water environment. [0003] In recent years, my country's urban water pollution situation is still severe, and the problems in the operation of urban drainage pipe networks have become increasingly prominent. Strengthening the informatization construction of urban drainage pipe networks is an important technical means to solve related problems. Sewage pumping stations are an important structure of drainage pipe networks. Unit, to realize the intellig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F5/22
CPCE03F5/22
Inventor 刘艳臣施汉昌黄霞
Owner TSINGHUA UNIV
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