配备Vorecon的同轴驱动给水泵汽轮机振动分析及处理  

Analysis and Treatment of Shaft Vibration of Coaxial Drive Feed Water Pump Steam Turbine with Vorecon

作　　者：张泽 周斌 董伟 张鹏 吕蒙 王涛 杨宇星 ZHANG Ze;ZHOU Bin;DONG Wei;ZHANG Peng;L Meng;WANG Tao;YANG Yuxing(North China Electric Power Research Institute Co.,Ltd.Xi’an Branch,Xi’an 710075,China;State Grid Jibei Electric Power Co.,Ltd.Research Institute(North China Electric Power Research Institute Co.,Ltd.),Beijing 100045,China)

机构地区：[1]华北电力科学研究院有限责任公司西安分公司,西安710075 [2]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045

出　　处：《发电设备》2025年第2期136-140,共5页Power Equipment

摘　　要：针对某配备Vorecon传动设备的同轴驱动给水泵汽轮机在调试过程中的振动异常现象,对轴承振动情况、冲转过程参数、动静碰摩故障机理和Vorecon润滑油压力等进行分析。通过计算和分析,发现振动异常是由多种因素共同作用的结果,包括轴系载荷较小、动静碰摩、油膜失稳等。针对这些问题,采取了一系列解决措施,包括提高轴封温度、延长暖机磨合时间、降低润滑油压力、缩短同轴给水泵并入运行时间等。结果表明:相比于机组首次冲转,1、2、3号轴承和Vorecon输入轴的振幅由164.08、283.92、217.48、110μm分别降至19.90、24.47、22.15、47μm,振动异常现象消除;在空负荷、低负荷和满负荷的运行过程中,各轴承的振动数据均表现正常。In view of the abnormal vibration phenomenon during commissioning of a coaxial drive feed water pump turbine equipped with Vorecon transmission equipment,the bearing vibration,start-up process parameters,dynamic and static friction fault mechanism and Vorecon lubricating oil pressure were analysed.Calculation and analysis results show that the abnormal vibration is caused by many factors,including the low load of shafting,dynamic and static friction and oil film instability.To solve these problems,a series of measures were taken,including increasing the shaft seal temperature,extending the warming-up running-in time,reducing the lubricating oil pressure,and shortening the operation time of the coaxial feed water pump.Results show that,compared with the first start-up of the unit,the amplitudes of bearing No.1,2 and 3 and Vorecon input shaft decrease from 164.08,283.92,217.48,110μm to 19.90,24.47,22.15,47μm respectively,and the abnormal vibration phenomenon is eliminated.The vibration data of each bearing are normal under no-load,low-load and full-load operation conditions.

关 键 词：汽轮机 同轴驱动给水泵 Vorecon 轴承 振动 

分 类 号：TK263.7[动力工程及工程热物理—动力机械及工程]