Aluminum liquid level simulation control system for casting and rolling mill

Abstract

The invention discloses a cast-rolling machine molten aluminum level simulation control system. The cast-rolling machine molten aluminum level simulation control system comprises a flow eyelet drill rod angle adjustment motor which is a variable frequency motor, and further comprises a molten aluminum level measuring device. The molten aluminum level measuring device comprises a molten aluminum level transmission lever; one end of the molten aluminum level transmission lever is the liquid level measurement end, wherein the liquid level measurement end is connected with a floating ball through a connecting rod, and the floating ball floats on the surface of molten aluminum; the other end of the molten aluminum level transmission lever is the displacement output end, wherein a motion trajectory of the displacement output end is provided with a displacement sensor used for detecting the displacement of the displacement output end; the output end of the displacement sensor is connected with the input end of a PID regulator; the output end of the PID regulator is connected with the input end of a frequency converter; the output end of the frequency converter is connected with the variable frequency motor. The cast-rolling machine molten aluminum level simulation control system has the advantages of being high in work reliability and liquid level control accuracy and the like.

Description

technical field [0001] The invention relates to a simulation control system for the aluminum liquid level of a casting and rolling mill Background technique [0002] The liquid level control of the aluminum liquid is more critical in the control of the casting and rolling system. In order to ensure the continuity of the casting and rolling process, when the casting and rolling speed changes, the required aluminum liquid flow rate should be stabilized within a certain range. At present, the liquid level control at the exit of the stationary furnace is to detect the level of the aluminum liquid through a plurality of proximity switches, and the proximity switch controls the angle of the flow hole to adjust the motor operation, thereby adjusting the angle of the flow hole at the exit of the static furnace to control the flow of the aluminum liquid. To achieve the purpose of controlling the liquid level of aluminum liquid. Since the temperature of the molten aluminum at the exi...

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Problems solved by technology

Since the temperature of the molten aluminum at the exit of the stationary furnace is about 800°C, the proximity switch is in a high temperature environment for a long time, and the failure rate is high. If a proximity switch has a problem, it will cause the liquid level control system to fail and stop working, which directly affects the stability of the liquid level. In turn, it affects the quality of the cast-rolled plate; through the proximity switch to directly control the contactor to realize the positive and negative rotation of the angle adjustment motor, the starting current is large, and the frequent starting will affect the service life of the motor and cause damage to the power supply. Certain pollution, and the accuracy of liquid level adjustment is low

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