汽动给水泵轴振大原因分析及对策  

Cause Analysis and Countermeasure for Shaft Vibration of Steam Feed-water Pump

作　　者：林森[1] 李凡林 张美[1] 方俊[1] 张大伟[1] LIN Sen;LI Fanlin;ZHANG Mei;FANG Jun;ZHANG Dawei(Huainan Mining Group Power Generation Co.,Ltd.,Huainan 232033,China)

机构地区：[1]淮南矿业集团发电有限责任公司,安徽淮南232033

出　　处：《国网技术学院学报》2019年第6期52-55,共4页Journal of State Grid Technology College

摘　　要：某电厂汽动给水泵在启动过程中由于轴振大导致机组无法升负荷,针对这一异常状况进行了分析。通过对故障芯包的运行现象分析及初步检查,判定轴振大的直接原因为芯包平衡鼓损坏。芯包返厂进行检修,发现其平衡鼓、径向轴瓦、轴承支架均存在不同程度的缺陷。检修完成后将芯包回装至给水泵,设备运行正常,安全隐患消除。This paper analyzes the abnormal condition of steam feed-water pump in a certain power plant,which causes failure for the unit to lift load due to large shaft vibration during the start-up process.Through the analysis and preliminary inspection on the operation phenomena of the faulty core package,it is determined that the direct cause of the large shaft vibration is the damage on the balance drum in the core package.Then the core package is returned to the factory for maintenance,it is found that the balance drum,radial bearing liners and bearing bracket all have defects in different degree.After the maintenance is completed,the core package is reinstalled to the feed-water pump,the equipment operates normally and the potential safety hazard is eliminated.

关 键 词：给水泵 轴振 芯包 平衡鼓 润滑油 

分 类 号：TH921[机械工程]