中国电力2017，Vol.50Issue(5)：13-19,7.DOI:10.11930/j.issn.1004-9649.2017.05.013.07
某300 MW机组高中压转子振动故障的准确诊断
Accurate Diagnosis of Abnormal Vibration of High-Medium Pressure Rotor in a 300-MW Unit
张学延 1李书伟 2刘安1
作者信息
- 1. 西安热工研究院有限公司,陕西西安 710032
- 2. 神华国能(神东电力)集团公司,北京 100033
- 折叠
摘要
Abstract
Aiming at the problem of vibration climbing of the high-medium pressure rotor during the operation of a 300-MW unit,this paper analyzes the abnormal situations such as the differences in vibration characteristics of the rotor between cold and hot (warm) states and the decrease in rotor bending and concludes that the vibration problems are caused by the cracks in the rotor,which lead to the decrease of the rotor stiffness in the hot state and the danage of the rotor balance.The rotor detection shows that there are severe cracks in the rotor shaft.The detection confirms the accuracy of the diagnosis.The timely shutdown and maintenance as well as the detection of the existence of the cracks,have prevented the unit from potential shaft break and collapse.Moreover,the producing process of the rotor cracks and the possible impacts of in-depth peaking load and flexible operation ofthermal power units on the rotor safety are also studied in this paper.关键词
火力发电机组/高中压转子/异常振动/故障诊断/转子裂纹Key words
thermal power generation unit/high-medium pressure rotor/abnormal vibration/fault diagnosis/rotor crack分类
能源科技引用本文复制引用
张学延,李书伟,刘安..某300 MW机组高中压转子振动故障的准确诊断[J].中国电力,2017,50(5):13-19,7.
