某台630MW机组低压转子异常振动诊断及处理Diagnosis and Treatment on Abnormal Vibration of Low-pressure Rotors of 630 MW Units
李卫军,吴文健,应光耀
LI Weijun,WU Wenjian,YING Guangyao
摘要(Abstract)：
对某台630 MW机组低压转子的异常振动进行了测试试验,结果表明:低压转子存在原始不平衡或热不平衡且动静间隙偏小、发电机转子上的热不平衡,引起低压转子不同程度的动静碰磨,导致低压转子轴振异常。通过在低压转子与汽发对轮上同时加重的现场动平衡调整,彻底解决了该振动问题,可为630 MW机组的振动故障诊断提供参考。
The abnormal vibration of low-pressure rotors of 630 MW units is tested.The result shows that there is initial unbalance or thermal unbalance in the rotors;besides,the kinetic-static clearance is small,and thermal unbalancing of the rotors results in rubbing of low-pressure rotor and the abnormal shaft vibration.The abnormal vibration is thoroughly eliminated by on-site dynamic balancing of low-pressure rotors and wheels of turbine and generator,which can be used as reference for the fault diagnosis of 630 MW units.
关键词(KeyWords)：
630 MW机组;低压转子;异常振动;碰磨;动平衡
630 MW units;low-pressure rotor;abnormal vibration;rubbing;dynamic balancing
基金项目(Foundation): 国家自然科学基金资助项目(51275452);; 国网浙江省电力公司科技项目(5211DS14005B)
作者(Author):
李卫军,吴文健,应光耀
LI Weijun,WU Wenjian,YING Guangyao
DOI: 10.19585/j.zjdl.2017.01.014
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