Method for controlling continuous casting machine fan-shaped section without displacement sensor

Abstract

The invention relates to a method for controlling a continuous casting machine fan-shaped section without a displacement sensor and belongs to the technical field of steel smelting. According to the technical scheme, when the displacement sensor of the fan-shaped section has a fault, a driving roller is adopted to rapidly replace the displacement sensor to conduct control; the speed valve of a frequency converter is collected and serves as the rotating speed of a motor, namely the angular speed of the driving roller of the fan-shaped section; the angular speed of the driving roller of the fan-shaped section is converted into the linear speed by calculating according to the decelerator transmission ratio, the roller diameter and unit conversion; and the speed of the frequency converter is compensated through the torque compensation coefficient, and a rotating speed conforms to the actual rotating speed of the motor is obtained. The method has the beneficial effects that controlling is conducted through a speed signal of the driving frequency converter of the fan-shaped section, so that the situation that production is affected by the fault of the displacement sensor is avoided, faults of a controlling system are reduced, stable proceeding of the production is guaranteed, and fault treatment time and the maintenance cost are saved.

Description

technical field [0001] The invention relates to a method for controlling a segment of a continuous casting machine without a displacement sensor, and belongs to the technical field of iron and steel smelting. Background technique [0002] The sector section is the core equipment of the continuous casting machine, and the stability and precision of its control system directly determine the quality and production efficiency of the slab. With the gradual maturity of sector mechanical equipment, the importance of its control system has gradually become prominent, and people are constantly seeking for more stable and precise sector control methods. However, the problems existing in the prior art have not been completely resolved. For example, for a slab continuous casting machine in a certain enterprise, its segment control system uses displacement sensors installed on sections 3, 6, 9, and 11 to realize the delivery of dummy ingots, Billet drawing, casting billet cooling and ot...

AI Technical Summary

Problems solved by technology

Among them, the electrical equipment is divided into the transmission part and the control part. Because the transmission part is driven separately for each section of the inner and outer arcs, if a single motor or frequency converter fails, it will have little impact on the entire system, and the control part of the entire sector is a whole. , Once a problem occurs, it may cause production interruption, thermal shutdown and other accidents

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