摘要
通过对百万千瓦级核电汽轮发电机端盖式轴承座及其汽轮发电机基础刚度的有限元分析,获得了百万千瓦级核电汽轮发电机轴承支撑刚度数据。在此基础上,研究了不同轴承支撑刚度对百万千瓦级核电汽轮发电机转子轴系临界转速的影响。结果表明:百万千瓦级核电汽轮发电机端盖式轴承座刚度有限元分析值和经验值比较接近,汽轮发电机转子临界转速对较低数值范围的轴承支撑刚度变化更明显,设计时应保证足够大的轴承支撑刚度。
Bearing pedestal and foundation stiffnesses by finite element were analysed,the data of bearing support stiffnesses for a 1000MW nuclear power T-G set was obtained.The influence of different bearing stiffness on the turbogenerator rotor critical speed of a million kilowatt class nuclear power were studied.The results showed that bearing stiffnesses by FEA were very close to experienced values.At the same time,critical speeds of T-G rotor varies more sensitively with smaller bearing support stiffnesses,the bearing support stiffness should be big enough in design.
出处
《华电技术》
CAS
2012年第7期1-3,13,共4页
HUADIAN TECHNOLOGY
基金
国家科技重大专项课题(2010ZX06004-013-03-04)
关键词
端盖式轴承座
支撑刚度
临界转速
百万千瓦级核电汽轮发电机
end-bracket bearing pedestal
supporting stiffness
critical speed
1000MW nuclear powerturbine-generator
