河北水利电力学院学报2025，Vol.35Issue(4)：22-26,39,6.DOI:10.16046/j.cnki.issn2096-5680.2025.04.004
3.8MW异步电动机非轴伸端振动分析及治理
Analysis and Treatment of Non-Drive End Vibration of 3.8 MW Asynchronous Motor
摘要
Abstract
Asynchronous motors are widely used in the petroleum and petrochemical industry.Taking 3.8MW asynchronous motor as the research object,the vertical vibration problem of the non-driving end of the motor is studied.By analyzing the frequency characteristics to detect the natural frequency of the motor,it is determined that there is a resonance of 50 Hz at power frequency in the motor system.We per-form dynamic balance test on the motor to confirm the fault characteristic frequency that causes vibration.The cause of the vibration is determined to be weak foundation and bearing bush wear.We adjust the bear-ing bush clearance after disassembling and checking the motor bearing bush.After the motor runs under load,we measure and analyze the motor operation data.The results show that when the problem of weak motor foundation cannot be solved in the short term,adjusting the bearing bush clearance reasonably has a certain effect on reducing vertical vibration.The vibration control analysis method in the article can provide reference for vibration control of large-capacity motors.关键词
非轴伸端/固有频率/共振/动平衡/轴瓦间隙Key words
non-driving end/natural frequency/resonance/dynamic balance/bearing bush clearance分类
信息技术与安全科学引用本文复制引用
张翔,孙娟,孙华丰,刘洋,许泽龙..3.8MW异步电动机非轴伸端振动分析及治理[J].河北水利电力学院学报,2025,35(4):22-26,39,6.基金项目
中国石化天津分公司电仪专项项目(DY2310DD456T2C) （DY2310DD456T2C）
