轧钢厂大型电机的振动测量及其减振措施

• 机 构: 中国科学院北京力学研究所十二室振动组
• 出 处: 力学情报
• 发表日期: 1976年03期
• 关键词: 动力吸振器 振动测量 大型电机 直流发电机 哈尔滨电机厂 减振措施 发电机定子 四台 电刷 转/分

一、前言 1966年哈尔滨电机厂为轧钢厂生产四台大型交直流发电机组,转速为500转/分,分别安装在各个钢铁公司的轧钢厂。运行到现在,在小负荷轧钢时,这四台机组运行正常,但当负荷加大时,直流发电机定子壳体发生较大的径向振动,每轧一次钢,振动持续2至4秒钟,电刷打火严重,轧钢负荷电流不得不因此而下降,例如在某钢厂的轧钢负荷电流从12000安培下降到9000安培,严重影响了轧钢产量,因此有必要消除或减小这种振动。

I. Preface In 1966 Harbin Electric Works produced four large-scale AC and DC generators for rolling mills at a speed of 500 r / min and installed them in rolling mills of various steel companies. Running until now, these four units operate normally during small load rolling. However, when the load is increased, large radial vibration occurs in the stator casing of DC generator. Once each rolling, the vibration lasts for 2 to 4 seconds , Severe sparking of the brush and a reduction in the load current of the rolling load. For example, the rolling load current at a steel mill dropped from 12,000 amperes to 9,000 amperes, seriously affecting the rolling production and it is therefore necessary to eliminate or reduce such vibrations.