Emergency tripping device for tundish nozzle in round billet conticaster and maintenance method of emergency tripping device

Abstract

The invention relates to an emergency tripping device for a tundish nozzle in a round billet conticaster and a maintenance method of the emergency tripping device. The emergency tripping device comprises a tripping switch blade, a tripping oil cylinder and a switch blade guide groove, wherein the tripping switch blade is arranged in the switch blade guide groove and rapidly moves to the direction of the tundish nozzle along the switch blade guide groove, and a piston rod of the tripping oil cylinder is connected with the switch blade and can push the switch blade. The emergency tripping device has the advantages of being convenient to install, flexible to disassemble, small in maintenance quantity and long in service life; when offline maintenance is conducted, only a fixed bolt on a fixed base plate needs to be disassembled, and the fixed base plate can be disassembled to conduct offline maintenance; when the device is used online, an operator can conveniently install a driving oil cylinder on an oil cylinder installation plate, and the device is put into use conveniently and rapidly; meanwhile, the emergency tripping device can be repeatedly used if the tripping switch blade is not damaged, and the cost of spare parts is greatly reduced.

Description

technical field [0001] The invention relates to metallurgical steelmaking continuous casting equipment, in particular to a device for quickly cutting off a tundish casting nozzle for a round billet continuous casting machine in case of an emergency. Background technique [0002] Round billet continuous casting machines are generally multi-strand production, and generally at least 3 to 6 strands are arranged. In continuous casting production, each tundish is equipped with a corresponding tundish nozzle according to the number of flows, which is used to continuously divert the molten steel in the tundish to the mold through the tundish nozzle, and the liquid molten steel is discharged through the continuous cooling of the mold. Continuously solidify into long continuous casting slabs, and then cut the drawn continuous casting slabs into required lengths by flame cutting machine to form products. In production, there is a set of special stopper rod flow control system to contr...

AI Technical Summary

Problems solved by technology

In production, there is a set of special stopper rod flow control system to control the flow of molten steel in the tundish nozzle. The opening degree of the stopper rod is controlled by the precise crystallizer liquid level signal feedback of the electronic control stopper rod mechanism, so as to obtain a stable tundish nozzle flow rate. , to ensure the stable, reliable and continuous production of the round billet continuous casting machine, but in the actual production, various casting abnormalities will be encountered, such as the sudden breakage of the stopper rod, serious corrosion of the stopper rod and uncontrollable flow, tundish nozzle In the case of abnormal accidents such as breakage, corrosion of the tundish nozzle, etc., the casting must be stopped immediately, otherwise it will lead to immeasurable production accidents

A nozzle cut-off device must be installed at the position of the nozzle of the tundish. In an emergency, the nozzle is quickly cut off and the steel flow is blocked, so as to prevent molten steel from continuing to flow down the nozzle of the tundish, causing the mold to overflow and burn out the continuous casting platform. Various equipment, affecting production

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