280MW汽轮发电机组振动异常分析  

Analysis of Abnormal Vibrational Behavior of a 280MW Steam Turbine-generator Set

作　　者：李卫军[1] 顾正皓[1] 吴文健[1] 

机构地区：[1]浙江省电力试验研究院,浙江杭州310014

出　　处：《发电设备》2007年第6期457-459,共3页Power Equipment

摘　　要：对280 MW汽轮机组启动阶段的振动异常现象进行了分析。研究表明中压缸上、下缸温差过大是引起动、静部件碰摩的原因,致使机组振动爬升;调整中压缸进汽参数可降低上、下缸温差,避免机组启动阶段的动、静部件碰摩现象。The cause of abnormal vibration of a 280 MW steam turbine set during start up is analyzed. Results indicate that an excessive difference, between upper and lower casing＇ s temperature of the middle cylinder, has cause rubbing between stationary and moving components, which in their turn have caused vibration to gradually increase. By adjusting the middle cylinder＇s inlet steam parameters, the upper and lower casing＇s temperature difference can be reduced and therewith rubbing, between stationary and moving parts, during start up, prevented.

关 键 词：能源与动力工程 汽轮机 振动 碰摩 温差 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]