定速立式电机异常振动原因分析及处理  

Analysis and Handling of Abnormal Vibration in Fixed-Speed Vertical Motors

作　　者：秦建军 司耀强 纪东兴 俞文瑾 李颉 QIN Jianjun;SI Yaoqiang;JI Dongxing;YU Wenjin;LI Jie(Shandong Energy Inner Mongolia Shenglu Electric Power Co.,Ltd.,Ordos 016299)

机构地区：[1]山东能源内蒙古盛鲁电力有限公司,内蒙古鄂尔多斯016299

出　　处：《电力安全技术》2024年第1期71-73,78,共4页Electric Safety Technology

摘　　要：某定速立式电动机在静止时就有较大振幅,运行过程中发现其驱动端波形有削波现象,非驱动端振动较驱动端大,非驱动端东西方向振动较南北方向大,且振幅波动大。后经分析、拆解和试验验证,发现其驱动端削波现象是由动静碰摩引起的,非驱动端振动超标是由法兰共振引起的,东西方向振动大是由该方向支撑刚度不足导致的,振幅波动大是由拍振引起的。通过采取在法兰处焊接槽钢,放置隔振材料等处理措施,解决了电动机异常振动的问题。The fixed-speed vertical motor exhibited a significant amplitude even when stationary.During operation,waveform distortion was observed at the drive end,while the non-drive end exhibits greater vibration compared to the drive end.Vibration at non-drive end appears higher in the east-west direction than that in the north-south direction,and there was considerable fluctuation in the amplitude.Analysis,disassembly,and experimental validation revealed that the waveform distortion at the drive end was caused by dynamic-static friction,excessive vibration at the non-drive end was due to flange resonance,inadequate support stiffness caused higher vibration in the east-west direction,and fluctuation in the amplitude was caused by beat vibration.The issue of abnormal motor vibration is resolved by welding channel steel at the flange and implementing vibration isolation materials.

关 键 词：立式电动机 动静碰摩 共振 拍振 支撑刚度 

分 类 号：TM621.7[电气工程—电力系统及自动化]