摘要
为加强对主油泵小轴振动监视,某厂在检修中对汽轮机偏心测量系统进行改造,600 r/min以上时显示小轴振动信号,在机组检修后启动过程中出现了偏心异常增大故障。通过针对性分析,明确诊断出故障为主油泵油挡及密封环发生碰摩所致。翻前箱检查处理后,再次启动完全消除了这一故障。研究成果对该类型故障具有典型的参考意义。
In order to strengthen the shaft vibration monitoring of the main oil pump,the measurement system of turbine eccentricity was reformed in a plant,the small shaft vibration signal was displayed when the speed was above 600 r/min,the abnormal increase of turbine eccentricity occurred during the start-up process after maintenance.By analyzing,it was confirmed that the turbine eccentricity was caused by oil blocking and sealed ring of the main oil pump.The eccentricity trouble was completely disappeared after checking and dealing.The result could provide typical reference for power plants to deal with this type of fault.
作者
崔彦亭
胥佳瑞
贺善举
吴韬
邓爱祥
CUI Yanting;XU Jiarui;HE Shanju;WU Tao;DENG Aixiang(Datang North China Electric Power and Research Institute,Beijing,100043;Hebei Datang International Zhangjiakou Thermal Power Company Limited,Zhangjiakou Hebei,075000)
出处
《东方汽轮机》
2022年第2期71-74,共4页
Dongfang Turbine
关键词
汽轮机
偏心
油挡
密封环
碰摩
turbine
eccentricity
oil blocking
sealed ring
rubbing impact