有关大型转炉倾动控制问题的研究

来源期刊：冶金自动化2010年第2期

论文作者：李林 马跃东 郭艳兵

文章页码：55 - 57

关键词：转炉倾动； 主从控制； 发电制动； 逆变颠覆

Key words：converter tilting； master-slave cotrol； engine brake； inverting overthrow

摘    要：以鞍钢260 t炼钢转炉倾动传动控制工程为对象,针对试生产阶段中出现的系统转矩不稳定以及装置爆快熔等问题,采用现场观测和转矩数据跟踪以及同类炉型方案对比等方式分析诸多问题产生的原因,从中明确了大型转炉倾动装置的多传动轴对炉体托圈产生的扭矩超控是关键要素。提出了在机械方面通过在传动连轴器上增设某些弹性连接的方法提高系统的阻尼系数,从而削弱动态时对电动机产生的不平衡冲击;在电气方面通过直流供电侧增加带有可关断功能的晶闸管保护电路,可以抑制逆变颠覆对电控元件的破坏作用。这些举措有利于深入探讨转炉倾动传动装置的安全运行以及系统的合理配置。

Abstract: For drive control engineering project of 260 t steelmaking converter tilting in Anshan Iron and Steel Company,torque was instable and fast fuse was exploded in trial manufacture process.Causes of above mentioned problems are analyzed through field observation,torque data track and comparison of similar projects.It is discovered that torque produced by multi-transmission shaft operating on backing ring was out of control.It is the key factor of the problems.Several solutions for the problems are proposed.In mechanical respect the condition can be ameliorated by adding a resilient connection which can enhance the damping coefficient on the torque.In electrical respect,a thyristor protection circuit with breaking function is added in supply side of direct current to suppress destructive effect of inverting overthrow on electric elements.These possible solutions for the problems will provide effective technical support for further discussion on safe operation of converter tilting drive device and reasonable configuration of system.