Accident expansion prevention control method and system for multi-strand square billet casting machine

Abstract

The invention discloses an accident expansion prevention control method and system for a multi-strand square billet casting machine, and the method comprises the steps: building an input vector basedon a least square support vector machine; preprocessing the collected sample data, dividing a data set, and carrying out model parameter confirmation on the input vector; constructing a control modelby using a time sequence strategy, and training by combining the least square support vector machine and the data set; and setting a training precision threshold, if the threshold is met, outputting the trained control model, and inputting the trained control model into a test set for testing to obtain a predicted value. Various risks and losses caused by sudden emergency accidents or tripping andpower failure accidents of the casting machine are effectively reduced, equipment operation is rapidly recovered, the production efficiency is improved, the casting machine operation rate is improved, the casting machine equipment condition is well protected, the accident emergency treatment process is standardized, the accident emergency treatment capacity is improved, consequences and risks caused by sudden accidents are avoided, and great economic benefits are created for enterprises every year.

Description

technical field [0001] The invention relates to the technical field of multi-strand billet continuous casting production anti-emergency expansion, equipment and personal safety, in particular to a multi-strand billet casting machine anti-emergency expansion control method and system. Background technique [0002] Continuous casting is an important process of converting liquid high-temperature molten steel into solid high-temperature billet in steel production. The high-temperature liquid steel involved in the continuous casting production process is difficult to control in an accident state, which often easily causes damage to personnel and equipment. [0003] At present, in the event of an emergency (power trip, power failure) in the production process of the billet continuous casting machine, it is necessary to use the existing two hydraulic equipment to cooperate with the use of blind plates and manual closure processing. Due to the high temperature and danger during this...

AI Technical Summary

Problems solved by technology

Due to the high temperature and danger during this process, it is often difficult for personnel to approach the casting area to deal with accidents, and all molten steel is stopped. The casting rate is low, which leads to out-of-control pouring of molten steel in the tundish, and in severe cases, it is easy to cause personal injury and equipment damage

At present, the equipment system has the following risks: 1. In case of sudden emergency or power outage or power failure in the production process of the continuous casting machine, personnel use blocking cones to intercept the flow from the upper or lower part of the tundish, the success rate is low, and there is a risk of personal injury; 2. , In the event of an emergency, use the online hydraulic system equipment and the blind plate to stop the flow operation. Since there are only 2 sets of equipment, it is necessary to take out the oil cylinders one by one and then hang the oil cylinders to start the equipment to drive out the oil cylinders and use the blind plates to stop the casting flow. It takes a long time, and often only 1 or 2 streams can be blocked, while other streams cannot be blocked in time, resulting in high-temperature molten steel overflowing and damaging the equipment; 3. In the event of a power failure or power trip, the hydraulic station is powered off and the pressure fails , the solenoid valve loses power and does not operate, the hydraulic system is paralyzed, and the equipment cannot operate, resulting in the blockage of the blind plate and the inability to carry out the casting flow operation, resulting in a large area of ​​molten steel overflowing, damaging a large number of equipment in the casting machine, and taking a long time to recover the casting machine. Huge losses (such as: a certain workshop in a certain factory caused serious equipment damage due to a power outage, production was stopped for 7 days to deal with the accident, and the accident loss was about 10 million yuan)

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