百万千瓦级核电汽轮发电机轴承座刚度计算

华电技术 ›› 2012, Vol. 34 ›› Issue (7): 1-3.

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百万千瓦级核电汽轮发电机轴承座刚度计算

王秀瑾

上海发电设备成套设计研究院，上海200240

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-07-25 发布日期:2012-07-25

Calculation of the bearing support stiffness for 1000MW nuclear power turbinegenerator

WANG Xiujin

Shanghai Power Equipment Research Institute，Shanghai 200240，China

Received:1900-01-01 Revised:1900-01-01 Online:2012-07-25 Published:2012-07-25

摘要/Abstract

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。

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

Abstract: Bearing pedestal and foundation stiffnesses by finite element were analysed，the data of bearing support stiffnesses for a 1000MW 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.

Key words: end-bracket bearing pedestal, supporting stiffness, critical speed, 1000MW nuclear powerturbine-generator

王秀瑾. 百万千瓦级核电汽轮发电机轴承座刚度计算[J]. 华电技术, 2012, 34(7): 1-3.

WANG Xiujin. Calculation of the bearing support stiffness for 1000MW nuclear power turbinegenerator[J]. Huadian Technology, 2012, 34(7): 1-3.

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[3]	陈瑞克. 1000MW超超临界汽轮发电机组轴系的稳定性[J]. 华电技术, 2008, 30(5): 19-24.

百万千瓦级核电汽轮发电机轴承座刚度计算

Calculation of the bearing support stiffness for 1000MW nuclear power turbinegenerator

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