国产300MW机组振动问题分析及治理  

Vibration Analysis and Trouble-shooting of Home-made 300MW Turbine-generators

作　　者：张学延[1] 史建良[2] 

机构地区：[1]西安热工研究院有限公司,西安710032 [2]北方联合电力有限责任公司,呼和浩特010020

出　　处：《汽轮机技术》2006年第4期301-303,268,共4页Turbine Technology

摘　　要：国内三大动力集团公司生产的300MW机组在运行过程中存在一些较为普遍的振动问题,如过发电机/励磁机临界区域振动大、4号轴承振动偏大、大负荷下高中压转子轴承突发性振动等,严重影响机组的安全可靠运行。阐述了国产300MW机组的振动特征,分析振动原因,并总结处理过程,给出现场振动治理的措施。There are some common vibration problems during operation of home-made 300MW turbine-generators , such as great vibration during critical speeds range of generator/exciter rotor, big housing vibration at No. 4 bearing and sudden vibration of HIP rotor at large load. Which has great influence on unit＇ s safety and reliability. Vibration characteristics and their reason analysis are described in this paper, and some trouble - shooting measures are also given out.

关 键 词：振动 临界转速 共振 精细动平衡 蒸汽激振 

分 类 号：TK263.1[动力工程及工程热物理—动力机械及工程]