浙江电力Issue(7)：41-45,5.
9FA联合循环机组汽轮机传感器支架共振故障的分析与处理
Analysis and Treatment of Steam Turbine Sensor Bracket Resonance of 9FA Combined Cycle Units
摘要
Abstract
An unusual formant occurred in startup of 90 MW steam turbine of 9FA steam-gas combined cycle units, due to which units can not run up to the rated speed. By analyzing trend of vibration data change, spectrum characteristics and frequency phase angel difference, it is denied that the formant is from the over-critical rotor, and bearing pedestal resonance, foundation resonance other reasons are excluded. It is recog-nized finally that the fault is caused by the bracket resonance of the eddy current sensor. The vibration re-turned to normal by reinforcement of the bracket, therefore blind balancing treatment is avoided. Bracket res-onance characteristics and fault analysis method discussed in the paper can provide a reference for analysis and diagnosis of the similar faults.关键词
汽轮机/支架共振/传感器/相位差/故障诊断Key words
steam turbine/bracket resonance/sensor/phase angle difference/fault diagnosis分类
信息技术与安全科学引用本文复制引用
蔡文方,应光耀,吴文健,李卫军..9FA联合循环机组汽轮机传感器支架共振故障的分析与处理[J].浙江电力,2015,(7):41-45,5.基金项目
国网浙江省电力公司科技项目(5211DS14005B),大型汽轮发电机组动力特性模拟与复杂振动故障治理研究。 （5211DS14005B）
