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Automatic coordination control method for pump groups

A coordinated control and automatic technology, applied in pump control, machine/engine, liquid variable capacity machinery, etc., can solve problems such as the inability to achieve coordinated control of multiple pumps and linkage control of multiple pumps.

Inactive Publication Date: 2015-05-13
南宁苏格尔科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can control the water output of the pump according to the change of the water inflow, and can realize the control of the pump group with the liquid level as the control amount, it cannot realize the coordinated control of multiple pumps and the linkage control between multiple pumps and the change of the water inflow

Method used

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  • Automatic coordination control method for pump groups

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Embodiment Construction

[0015] The pump group automatic coordination control method is applied to the pump group drainage system composed of 4 water pumps (1# water pump, 2# water pump, 3# water pump, 4# water pump);

[0016] First, set the control target amount h of the liquid level height o value, the liquid level sensor monitors the actual liquid level height h in real time x value, set the sampling period t and the liquid level height change rate threshold ε, and the PLC controller reads the actual liquid level height h collected by the liquid level sensor according to the sampling period t x value, the PLC controller calculates the actual liquid level height h x and control target quantity h o The difference e;

[0017] The PLC controller performs current equalizing segmental control according to the difference e to control the number of conduction of the water pumps; the current equalizing segmental control is to judge the difference e, when eo / (n+1)>e≥(N-1)×h o / (n+1), start N water pumps...

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Abstract

The invention provides an automatic coordination control method for pump groups. The method can achieve coordination control over multiple pumps and linkage control over the pumps and water inlet quantity changes. According to the method, the value of a target control quantity ho of the liquid height is set; a PLC reads the value, collected by a liquid level sensor, of the actual liquid height hx according to a sampling period t, and the difference value e between the liquid height hx and the target control quantity ho is calculated; the PLC conducts flow equalizing segmented control according to the difference value e, the number of communicated pumps is controlled, synchronous variable flow control is conducted according to the duty ratio sigma of the liquid height change rate alpha to synchronous PWM waves output by the PLC, and control over the water discharge quantity of the water pumps is achieved.

Description

technical field [0001] The invention relates to an automatic control method for coordinated work of multiple pumps, in particular to an automatic coordinated control method for pump groups capable of realizing the coordinated control of multiple pumps and the linkage control of multiple pumps and water inflow changes. Background technique [0002] With the development of drainage equipment and control equipment in the direction of clustering and automation, the contradiction between automatic control and the backward drainage mode of pump groups has become more and more prominent. In the existing pump group automatic control technology, first rely on the sensor to monitor the liquid level, and transmit the monitored liquid level value to the controller. The signal drives the pump group to drain water, and the control liquid level is within the set range. However, the existing technology cannot respond to the rate of change of the liquid level in time, and coordinate the pum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06
Inventor 吴方圆张云星薛原任光宋孟家庆郑进城
Owner 南宁苏格尔科技有限公司