内蒙古电力技术2023，Vol.41Issue(6)：57-61,5.DOI:10.19929/j.cnki.nmgdljs.2023.0085
汽轮机低压转子叶片脱落故障振动特征分析
Analysis of Vibration Characteristics of Low-Pressure Rotor Blade Falling off Failure of Steam Turbine
摘要
Abstract
With regard to the detachment fault of the penultimate blade on vapor-side of the low-pressure rotor of a 300 MW turbine,this paper analyzes the vibration trend of the unit′s shaft system before and after the fault occurred and the characteristics of the vibration data,which has the common vibration characteristics of the detachment fault of the rotating parts of the steam turbine generator set,such as sudden vibration changes during the fault process,relatively stable vibration before and after the fault,and the vibration and vibration changes during the fault process are mainly composed of one-fold frequency vibration components.There are also the vibration characteristics unique to the low-pressure turbine rotors with unilateral component falling off across the rotor,such as the large changes in low-pressure rotor vibration vectors after the fault and the changes in in-phase and inverse-phase components in the changes in the vibration vectors of each rotor.By analyzing and summarizing the vibration characteristics of the 300 MW turbine low-pressure rotor vapor-side penultimate blade detachment fault,it is hoped to provide a reference for the analysis and diagnosis of the similar faults in other units.关键词
汽轮机/低压转子/叶片脱落/振动特征/同相分量/反相分量Key words
steam turbine/low-pressure rotor/blade detachment/vibration characteristic/in-phase component/anti-phase component分类
信息技术与安全科学引用本文复制引用
辛士红,袁海,吴兴燕,俎海东..汽轮机低压转子叶片脱落故障振动特征分析[J].内蒙古电力技术,2023,41(6):57-61,5.基金项目
内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司科技项目"汽轮机故障分析研究及辅助决策系统研发"(2020-9) （集团）
