大型水轮发电机组导轴承摆度偏大分析处理  

Analysis and Treatment of the Degree of Guide Bearing of Large Hydrogenerator Set

作　　者：杨冬 杨勇 蔡朝东 YANG Dong;YANG Yong;CAI Chaodong(Huaneng Lancang River Hydropower Co.Ltd.,Maintenance branch,Yunnan 650204,China)

机构地区：[1]华能澜沧江水电股份有限公司检修分公司,云南省昆明市650204

出　　处：《水电与抽水蓄能》2024年第6期65-68,115,共5页Hydropower and Pumped Storage

摘　　要：某电厂部分机组在运行中导轴承摆度偏大,历年检修采用常规等工艺均未有效解决摆度偏大的问题,不满足公司精品机组标准,导轴承摆度持续增大一定程度上影响机组安全稳定运行,针对此情况在非检修期针对工业互联网所提供的摆度数据进行分析,检修期结合在线监测数据及机组检修前盘车数据进行对比分析,确认轴领圆度偏差大及轴线姿态方位偏差是导致轴承摆度偏大的主要原因。检修期通过对上端轴轴领圆度进行加工修复,机组轴线摆度方位优化以及调整推力瓦受力改变轴线姿态的方法对导轴承摆度偏大的问题进行处理,修后摆度明显下降,达到公司精品机组指标。根据本次处理结果可以判断出机组在运行时摆度除了受常规不平衡力及轴线质量影响外,测量部位圆度、轴线摆度方位、机组旋转轴运行姿态对摆度均有不同程度的影响,机组检修时优化、改善此类问题,对降低机组摆度、提高运行安全稳定性有较好的效果。A power plant unit in the operation of guide bearing degree,calendar year maintenance using conventional process are not effectively solve the problem of large degree,does not meet the company standard of high-quality goods units,guide bearing degree continues to increase to affect the safe and stable operation of the unit,for the situation in the maintenance period for industrial Internet degree data analysis,maintenance period combined with on-line monitoring data and unit maintenance plate car data comparison analysis,confirm the shaft collar round degree deviation and axis attitude orientation deviation is the main reason for the bearing degree is large.During the maintenance period,through the processing and repair of the circle of the upper shaft,the optimization of the unit axis swing orientation of the unit and the adjustment of the force of the thrust bearing,the problem of the guide bearing swing is handled.After the repair,the swing decreases significantly,reaching the index of the company's quality unit.According to the processing results can determine the unit in running pendulum in addition to the conventional imbalance force and axis quality,measuring circle,axis pendulum orientation,unit rotating axis running posture have different degrees of influence,unit maintenance optimization,improve such problems,to reduce the unit pendulum degree,improve the operation safety stability has good effect.

关 键 词：水轮发电机 导轴承摆度 轴线 受力调整 境板水平 

分 类 号：TV734.21[水利工程—水利水电工程]