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A constant flow drainage control method and control system

A control system and control method technology, applied in waterway systems, water supply devices, buildings, etc., can solve the problems of control lag and low control accuracy, and achieve the effects of fast response speed, precise system control, and ensuring safe and efficient use.

Active Publication Date: 2022-01-04
SCIMEE TECH & SCI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of control lag and low control precision in the prior art, the technical solution adopted in the present invention is: a constant flow drainage control method, including monitoring the liquid level height at the opening and closing gate, and obtaining the liquid level height data , calculate the corresponding theoretical flow area according to the set drainage flow and the liquid level height data, adjust the opening of the opening and closing gate so that the real-time flow area of ​​the opening and closing gate is equal to the theoretical flow area

Method used

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  • A constant flow drainage control method and control system
  • A constant flow drainage control method and control system
  • A constant flow drainage control method and control system

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Effect test

Embodiment 1

[0051] see figure 1 , the present embodiment provides a constant flow drainage control method, including step 1, monitoring the liquid level height at the opening and closing gate 101, and obtaining liquid level height data; step 2, according to the set drainage flow rate and the described Calculate the theoretical flow area corresponding to the liquid level data; step 3, adjust the opening of the opening and closing gate 101 so that the real-time flow area of ​​the opening and closing gate 101 is equal to the theoretical flow area. As for the opening and closing gate 101, there is a definite corresponding relationship between the opening of the opening and closing gate 101 and the real-time flow area of ​​the opening and closing gate 101, and according to the knowledge of hydraulics, it can be known that a water passage hole 207 under water There is a definite corresponding relationship between the drainage flow rate at the water hole 207 and the flow area of ​​the water hole...

Embodiment 2

[0061] According to the above method, this embodiment provides a constant flow drainage control system, including the opening and closing gate 101 installed at the drain, the driving part 102 for adjusting the opening of the opening and closing gate 101, and the control system for monitoring the liquid level. The liquid level sensor 103, and the controller 104 connected to the drive unit 102 and the liquid level sensor 103 respectively, the controller 104 is used to obtain the liquid level height data collected by the liquid level sensor 103, and according to the set Drainage flow rate and the height data of the liquid level control the driving part 102 to adjust the opening of the opening and closing gate 101, as figure 1 , figure 2 and image 3 shown. Because for the opening and closing gate 101, there is a definite correspondence between the opening of the opening and closing gate 101 and the real-time flow area of ​​the opening and closing gate 101 (that is, when the op...

Embodiment 3

[0078] According to the method provided in Embodiment 1, this embodiment provides a way for the controller 104 to achieve precise control in the constant flow drainage control system described in Embodiment 2:

[0079] In this embodiment, the driving unit 102 is a hydraulic cylinder, and the controller 104 stores the above calculation formula and the corresponding relationship between k and h (different according to the shape of the water hole 207).

[0080] When the liquid level sensor 103 detects that the current liquid level height is H 1 , according to the formula and S 1 =k 1 h 1 ,Available:

[0081]

[0082] Among them, S 1 is the current flow area;

[0083] When the liquid level sensor 103 detects that the current liquid level height is H 2 , it can be concluded that:

[0084]

[0085] Since the flow rate needs to be controlled constant, that is, Q 1 =Q 2 , then there are:

[0086]

[0087] Organized to get:

[0088]

[0089] where k 1 、k 2 , ...

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Abstract

The invention relates to a constant flow drainage control method and control system, wherein the control method includes monitoring the liquid level height at the opening and closing gate, and obtaining liquid level height data; according to the set drainage flow rate and the liquid level The theoretical flow area corresponding to the height data calculation; adjust the opening of the opening and closing gate so that the real-time flow area of ​​the opening and closing gate is equal to the theoretical flow area; the constant flow drainage control method provided by the present invention can control the drainage flow Accurate and stable control is achieved, and the constant flow drainage control system is not only compact in structure, easy to install, low in cost, but also fast in response, and is not prone to blockage and seal failure.

Description

technical field [0001] The invention relates to the technical field of water supply and drainage, in particular to a constant flow drainage control method and control system for controlling the opening of a gate according to the height of the liquid level. Background technique [0002] In the drainage project, the water body in the reservoir and the overflow corridor needs to be discharged to the treatment system (such as sewage treatment plant, etc.) or the natural water body through the back-end pipe network. Large changes will occur. For example, when there is a sudden heavy rain, if it is directly discharged into the back-end pipe network, it will cause a sudden change in the pressure of the pipe network, a surge in water volume, and a large impact load on the treatment system; if the water volume of the back-end drainage pipe network is too large , may also be poured back from the outlet to the reservoir or overflow corridor. [0003] In the prior art, it is usually ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E03F7/02
CPCE03F7/02E03F2201/20E03F2201/30
Inventor 佟斯翰汤杰杨佳奇王哲晓肖波
Owner SCIMEE TECH & SCI CO LTD
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