华电技术 ›› 2018, Vol. 40 ›› Issue (6): 58-59.

• 技术交流 • 上一篇    下一篇

660MW单系列机组一次风机电机轴瓦温度高的原因分析及处理

  

  1. 宁夏国华宁东发电有限公司,银川〓750000
  • 出版日期:2018-06-25 发布日期:2018-08-21

Analysis and treatment of high temperature of bearing of primary air fan motor in 660MW singleseries unit

  1. Ningxia Guohua Ningdong Power Generation Company Limited,Yinchuan 750000, China
  • Online:2018-06-25 Published:2018-08-21

摘要:

宁夏国华宁东发电有限公司660MW单系列机组调试期间一次风机电机轴瓦温度偏高,存在被迫停运的风险。停机后对电机驱动端轴瓦进行翻瓦检查,发现轴瓦磨损严重、轴瓦装配间隙不合理,采取了调整瓦口间隙、调整瓦盘根压盖与轴的同轴度、加大进油节流阀板孔径等措施,有效消除了电机轴瓦温度高的现象,保证了机组安全稳定运行。

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Abstract:

During the debugging of the 660MW singleseries unit of Ningxia Guohua Ningdong Power Generation Company Limited, the temperature of the bearing of the primary fan motor is high and there is a risk of forced shutdown. Checking the bearing at the motor drive end after the shutdown, it was found that the bearing wear was serious and the assembly clearance of the bearing was unreasonable. Adjusting the gap between the bearings edges, adjusting the coaxial degree between the pressure packing cover and the shaft, and increase the diameter of the fuel charging throttle valve plate, can effectively eliminate the phenomenon of the motor bearing high temperature, which ensures the safe and stable operation of unit.

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