A control method, device and system for wet leveling liquid entering and exiting a liquid supply tank

Abstract

The embodiment of the invention discloses a method, device and system for controlling a wet leveling liquid to enter or exit from a liquid supply tank. The method comprises the following steps that after a first liquid level signal and a second liquid level signal are acquired, and if the wet leveling liquid is controlled through the first liquid level signal to enter or exit from the liquid supply tank, according to parameter information of the control system of the wet leveling liquid, whether the first liquid level signal has a fault or not is judged; if the first liquid level signal has the fault, whether the second liquid level signal has a fault or not is judged according to the parameter information of the control system of the wet leveling liquid; and if the second liquid level signal does not have a fault, the wet leveling liquid is controlled to enter and exit from the liquid supply tank through the second liquid level signal. By the adoption of the method, device and systemfor controlling the wet leveling liquid to enter or exit from the liquid supply tank, when a fault occurs in the first liquid level signal, the wet leveling liquid is controlled to enter and exit fromthe liquid supply tank through the second liquid level signal, so that the reliability of controlling the wet leveling liquid to enter and exit from the liquid supply tank is improved.

Description

technical field [0001] The present application relates to the field of automatic control, in particular to a control method, device and system for wet leveling liquid entering and exiting a liquid supply tank. Background technique [0002] Wet tempering of steel strip is an indispensable link in the production process of cold rolled sheet. The wet tempering operation is specifically, by spraying wet tempering liquid on the rolls installed on the tempering machine at the entrance side of the tempering machine, and drying the surface of the strip steel at the exit side of the tempering machine, which can effectively remove the impurities attached to the roll surface. Impurities such as iron and carbon can also stabilize the roll shape and prevent the thermal expansion of the roll, thereby achieving the purpose of reducing defects such as pressure pits on the strip. [0003] During the wet leveling process of strip steel, the wet leveling liquid is stored in the liquid supply ...

AI Technical Summary

Problems solved by technology

[0006] The present application provides a control method, device and system for wet leveling liquid entering and exiting the liquid supply tank to solve the problem of low stability of the existing wet leveling liquid control method

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