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Salt dissolving tank liquid level optimization and control method

A technology of optimized control and liquid level controller, which is applied in the direction of liquid level control, non-electric variable control, control/regulation system, etc., and can solve problems such as too large fluctuations in liquid level measurement values

Inactive Publication Date: 2020-01-10
北京和隆优化科技股份有限公司
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Problems solved by technology

[0005] In order to overcome the fluctuation of the liquid level of the salt tank, we still use the pilot control module to control the liquid level, but the measured value of the liquid level under manual operation fluctuates too much, so it cannot be used as the input of the pilot control module. The problem to be solved is to find A parameter replaces the actual liquid level value as the input value of the pilot control module

Method used

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  • Salt dissolving tank liquid level optimization and control method
  • Salt dissolving tank liquid level optimization and control method
  • Salt dissolving tank liquid level optimization and control method

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Embodiment Construction

[0011] The technical solution includes the following aspects: (1) establishment of the vertex curve; (2) calculation of water inflow; (3) optimization control; (4) liquid level controller.

[0012] The establishment of the above (1) vertex curve: For the variable of liquid level, each scan cycle of the system is compared with the value of the previous cycle. If the value of the current cycle is greater than the value of the previous cycle, the value of this cycle is Record it and compare it with the next cycle. If the current cycle is smaller than the previous cycle, record the previous cycle, and then compare it with the value of the next cycle. Finally, the highest output value will always be maintained. If the highest value remains unchanged for several cycles, the highest value of the current salting cycle is considered to be the current value. When the next salting cycle starts, the highest value of the previous cycle will be delayed by the corresponding salting cycle unti...

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Abstract

The invention discloses a method for optimizing and controlling salt dissolving tank liquid level. The method comprises the following steps of replacing an actual liquid level curve by utilizing peakcurve method in the salt dissolving process in continuous salting or non-continuous salting, constructing a mathematical model, and optimizing the system structure by utilizing a prediction model, a self-adaptive model and like first control modules, reducing the sensitivity and coordinate parameters of the system, and automatically controlling the salt dissolving tank liquid level. The automaticcontrol of the salt dissolving tank liquid level is realized, the stabilization of the liquid level is maintained, the problem that the liquid level is too high or low is avoided, the brine concentration is stabilized, and the labor intensity of the worker is greatly reduced.

Description

technical field [0001] The invention provides a method for optimizing the liquid level of a salt chemical tank by using the vertex curve method instead of the actual liquid level curve in the process of continuously adding salt or discontinuously adding salt, thereby stabilizing the liquid level and brine concentration. Background technique [0002] The main equipment in the brine system salt process includes a salt tank and a salt tank. All salt and water are added to the salt tank, and the mixed brine overflows from the salt tank to the salt tank. Some parts cannot be connected to automatic control, so the amount of salt added cannot be controlled. Every time salt is added, the liquid level of the salt tank will suddenly rise. The curve of the liquid level in a salt adding cycle is a sawtooth wave. The liquid level of the salt tank is controlled by the amount of water added to the salt tank. Therefore, stabilizing the liquid level of the salt tank also stabilizes the conce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D9/12
CPCG05D9/12
Inventor 吕伟军王风根于现军
Owner 北京和隆优化科技股份有限公司
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