Cascade double-tank liquid level control system

A liquid level control and water tank technology, applied in the electronic field, can solve problems such as difficult control, volume delay, and time lag, and achieve the effect of overcoming volume delay and improving dynamic performance

Inactive Publication Date: 2015-03-18
罗芳
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  • Claims
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AI Technical Summary

Problems solved by technology

In the control of the water level of the double-capacity water tanks in series, the incoming water first enters the first high-level water tank, and then flows out through the second low-level water tank. Compared with one water tank, the response of the controlled quantity is in time One step further behind, that is, there is a volume delay, which makes the process difficult to control

Method used

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  • Cascade double-tank liquid level control system

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Embodiment Construction

[0012] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] The liquid level control system of the double-capacity water tank in series is characterized in that it includes a low-level water tank level gauge and a main regulator connected thereto, a high-level water tank level gauge and a sub-regulator connected thereto, and also includes a main regulator connected to it. Communication bus with sub-regulator.

[0014] The water pump is used as the delivery source to pump the water in the water storage tank to the high-level water tank. The water intake can be adjusted through the action of the electric valve, and then the water can be sent from the high-level water tank to the low-level water tank through the manual valve to make the liquid in the low-level water tank Bits are kept at a certain height. During the whole working process, there are corresponding instruments to detect an...

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Abstract

The invention discloses a cascade double-tank liquid level control system. The system is characterized by comprising a low water tank liquid gauge, a main adjuster, a high water tank liquid gauge, a secondary adjuster and a communication bus, wherein the main adjuster is connected with the low water tank liquid gauge; the secondary adjuster is connected with the high water level liquid gauge; the communication bus is used for connecting the main adjuster with the secondary adjuster. By using the cascade double-tank liquid level control system, the dynamic performance of an adjusting process is improved; because of advanced control, the volume delay of the system can be greatly overcome. By using a two-step tuning method, real-time monitoring is performed on a tuning process and a curve, until optimal tuning parameters of a main loop and a secondary loop are achieved.

Description

technical field [0001] The invention belongs to the technical field of electronics, and relates to a liquid level control system of series double-capacity water tanks. Background technique [0002] Series double-capacity water tanks are widely used in industrial process control. In the control of the water level of the double-capacity water tanks in series, the incoming water first enters the first high-level water tank, and then flows out through the second low-level water tank. Compared with one water tank, the response of the controlled quantity is in time One step further behind, there is a volumetric delay, which makes the process difficult to control. [0003] Such as figure 1 The structure diagram of a typical double-capacity water tank in series is shown. The water pump pumps water from the water tank to the high-level water tank. The high-level water tank and the low-level water tank, and the low-level water tank and the water tank are connected by pipelines. And...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D9/12
Inventor 罗芳
Owner 罗芳
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