考虑厂房基础耦联作用的水轮发电机组轴系统动力反应分析  

DYNAMIC RESPONSE ANALYSIS OF ROTOR-BEARING SYSTEM OF A GENERATOR SET ACCOUNTING FOR WHOLE HYDROPOWER HOUSE FOUNDATION

作　　者：宋志强[1] 马震岳[1] 张运良[1] 杨晓明[2] 金长宇[3] 徐伟[1] 

机构地区：[1]大连理工大学土木水利学院,大连116024 [2]内蒙古工业大学建筑工程学院,呼和浩特010051 [3]中国水电顾问集团华东勘测设计研究院,杭州310014

出　　处：《振动与冲击》2008年第6期158-161,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金(No.50679009)

摘　　要：建立了水轮发电机组与厂房、机墩的耦联振动模型,考虑可倾瓦导轴承各瓦动力特性系数随轴心偏心距和偏位角的改变而导致的非线性特性,利用APDL语言编写的二维插值程序,考虑了各瓦动力特性系数随机组运行状态的调整,结合ANSYS对耦联模型进行瞬态响应计算,分析模型结果表明,考虑厂房基础耦联作用和各瓦动力特性系数的非线性变化后,轴系统的反应更加合理、可靠。The mechanical model of a couple vibration between a water turbine generator set and a hydropower house is established,accounting for the nonlinear dynamic coefficients of each tilting-pad of guide bearings with changes in shaft center eccentricity and attitude angle.The compile programs which adjust the dynamic coefficients of each pad along with running of the generating set is developed using APDL language.The transient response of the model is calculated using the soft ware ANSYS.The results show that after accounting for the whole hydropower house foundation and each pad's nonlinear dynamic coefficients,the response of the rotor-bearing system is more reasonable and reliable.

关 键 词：油膜 动力特性系数 非线性 耦联振动 导轴承 

分 类 号：TH113.1[机械工程—机械设计及理论] TK730.2[交通运输工程—轮机工程]