Control method and device of electrolytic cleaning vertical tank liquid level at high-speed cleaning segment

Abstract

The invention provides a control method and device of an electrolytic cleaning vertical tank liquid level at a high-speed cleaning segment. According to the position of an electrolytic plate, the lowest work liquid level of an electrolytic cleaning vertical tank is determined; according to the height of an overflow hole, the highest work liquid level of the electrolytic cleaning vertical tank is determined; the actual liquid level of the electrolytic cleaning vertical tank is obtained; whether the actual liquid level meets the reversed condition or not is judged, according to the actual liquidlevel, the opening degree of a work valve is controlled; regulation control over the liquid level reduction speed is achieved, it is ensured that the liquid level floats in the highest and lowest work liquid level, the phenomenon that the liquid level is too high, overflowing from the overflow hole is caused, and liquid leaking is caused is avoided, or the technical problem that the liquid levelis too low, the electrolytic plate is powered down, strip steel quality is affected, and seriously, the stable running of a unit is affected is solved. The technical problem that in the prior art, under the condition that the electrolytic cleaning vertical tank is in the high-speed cleaning, the phenomenon that the vertical electrolytic cleaning tank liquid level is too high or too low is prone toappearing, and the unit stable running is affected is solved.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a liquid level control method and device for an electrolytic cleaning vertical tank in a high-speed cleaning section. Background technique [0002] The cleaning section of the steel company's continuous retreat and galvanizing unit is mainly composed of No. 1 spray washing and brushing, No. 2 spray washing and brushing, electrolytic cleaning, No. 3 brushing and hot water rinsing. Among them, due to the high speed of the cleaning section of the continuous annealing unit for the electrolytic tin-plated substrate (the maximum speed of the cleaning section is 1000m / min, and the maximum speed of the annealing furnace is 750m / min), it is seriously affected by accidents such as leakage of the electrolytic cleaning vertical tank and abnormal drop in the liquid level. stable operation of the unit. [0003] The applicant found that the above prior art has at least the following tech...

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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for controlling the liquid level of an electrolytic cleaning vertical tank in the high-speed cleaning section, which solves the problem that the vertical tank for electrolytic cleaning in the prior art has no effective control means in the case of high-speed cleaning, and vertical tanks are prone to occur. The technical problem that the liquid level of the electrolytic cleaning tank is too high or the liquid level is too low leads to an accident and affects the stable operation of the unit

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