超超临界汽轮发电机组N+1支撑轴系失衡振动特性分析  

Dynamic simulation analysis of an ultra-supercritical steam turbine generator set with an N + 1 supporting shaft configuration about rotor imbalance

作　　者：姚剑飞[1] 崔亚辉 宾光富[3] 刘亮[1] 

机构地区：[1]北京化工大学机电工程学院高端机械装备健康监控与自愈化北京市重点实验室,北京100029 [2]神华国华(北京)电力研究院有限公司,北京100025 [3]湖南科技大学机电工程学院机械设备健康维护湖南省重点实验室,湖南湘潭411201

出　　处：《北京化工大学学报（自然科学版）》2016年第4期78-83,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家自然科学基金(51135001);北京市自然科学基金(3132025);中央高校基本科研业务费(JD1410)

摘　　要：建立了1000 MW超超临界汽轮发电机组N+1支撑轴系的有限元动力学模型,对该种轴系的动力学特性及不平衡振动故障进行了仿真分析,归纳了该轴系轴向不同位置不平衡激起的轴系振动响应特性及转子间的相互影响规律,为该类机组的故障诊断及现场动平衡提供参考和依据。A finite element model of an ultra supercritical turbo-set with an N ＋ 1 configuration has been developed in order to analyze the dynamic characteristics of the shaft and rotor imbalance for an N ＋ 1 configuration. The analysis results show that the imbalance of a rotor has a great influence on the vibration of the adjacent rotors in the ultra supercritical turbo-set with N ＋ 1 configuration. The results obtained in this study should be useful in identifying,understanding and avoiding some undesirable vibration behavior in ultra supercritical turbo-sets with an N ＋ 1 configuration.

关 键 词：超超临界汽轮发电机组 N+1支撑轴系 不平衡 有限元法 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程] TH113[机械工程—机械设计及理论]