一起炼钢转炉倾动装置事故的分析与改进  

Analysis and improvement of a converter tilting device accident in steelmaking

作　　者：黄志刚[1] 张林[1] 陈雾[1] 周冲[2] HUANG Zhigang;ZHANG Lin;CHEN Wu;ZHOU Chong(Equipment Department,Baoshan Iron&Steel Co.,Ltd.,Shanghai 200941,China;Steel-making Plant,Baoshan Iron&Steel Co.,Ltd.,Shanghai 200941,China)

机构地区：[1]宝山钢铁股份有限公司设备部,上海200941 [2]宝山钢铁股份有限公司炼钢厂,上海200941

出　　处：《宝钢技术》2024年第6期50-54,共5页Baosteel Technology

摘　　要：针对某炼钢厂250 t转炉一起因转炉倾动设备失控发生钢渣溢出的事故,介绍该转炉倾动装置电气传动系统的组成及倾动系统起停控制过程的监控,分析倾动装置在停止过程中发生短时间失控的原因,发现该倾动装置在制动器及紧停控制逻辑设计方面存在严重缺陷。通过对该倾动装置控制系统的优化改进,解决了倾动装置短时间失控与制动器动作延迟的问题,提出加强对每台转炉倾动装置中4台直流电动机的电枢、励磁及制动器电流之间进行均衡性监控的建议,对类似由1套电气调速装置集中控制多电动机的大型转炉倾动装置控制系统的完善与安全运行具有一定的指导意义。In response to a molten slag overflow accident happening on the 250 t converter of a steel mill for the loss of control of the converter tilting device,the composition of the electric driving system and the monitoring of the starting-stopping process of the converter tilting device were introduced.The reasons for the short-term loss of control during the stopping process of the tilting device were analyzed.It was found that there are serious defects in the design of the brake and emergency stop control of the tilting device.Through the optimization and improvement of the control system,the problems of short-term loss of control and brake action delay in the tilting device have been solved.It is suggested to improve the monitoring of the balance between the armature,excitation,and currents of the four DC motors in each converter tilting device.This has guiding significance for the perfection and safe operation of the large-scale converter tilting device that are controlled by a single electrical speed regulation device for multiple motors.

关 键 词：转炉倾动装置 制动器 直流电动机 紧停 

分 类 号：TF748.2[冶金工程—钢铁冶金]