摘要
汽流激振是制约超超临界汽轮机安全性的关键因素之一。概括分析了国内外对汽轮机汽流激振的研究现状,并介绍了超超临界机组汽轮机汽流激振产生的原因、特征及其对轴系稳定性的影响。结合某电厂超超临界百万千瓦机组的振动实例,对汽轮机汽流激振进行了分析讨论,给出了治理汽轮机汽流激振的措施,实施后机组运行良好。
The steam flow excited vibration（SFEV） is one of the key factors which restrict the safety of ultra-supercritical units.The status quo of studying SFEV at home and abroad has been briefly analysed,the causes leading to SFEV on steam turbine of ultra-supercritical units,the behavior of SFEV,and the influence of SFEV upon stability of the shafting system being presented.Combined with the practical examples of vibration on ultra-supercritical unit in one power plant,the SFEV on steam turbines has been analysed and discussed,and measures for rectifying SFEV on steam turbines being given,after implementation,the operation of unit is good.
出处
《热力发电》
CAS
北大核心
2011年第4期37-40,共4页
Thermal Power Generation
关键词
汽轮机
汽流激振
轴系振动
低频振动
ultra-supercritical
steam turbine
SFEV
low frequency vibration
