屏蔽泵热备用起动卡涩故障原因分析

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Analysis of Canned-Motor Pump Jamming Failure in Start Hot Standby Mode

1. College of Water Resources and Hydropower; Sichuan University, Chengdu, 610065, China;
2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China;
3. Nuclear Power Institute of China, Chengdu 610041;
4. Chengdu CAS WISH Instrument co. Ltd. Chengdu, 610041, China

摘要: 对某屏蔽泵低速起动故障产生的原因进行了拆检分析。结果表明,导轴承间隙的设计、制造装配过程的偏差累计以及轴瓦的装配预紧量导致了下导轴承间隙过小从而引起了起动故障。根据原因分析提出了解决办法,并通过试验验证,证明解决措施是有效可行的,能够满足运行要求。
- 屏蔽泵 /
- 热备用 /
- 起动故障 /
- 原因分析 /
- 导轴承 /
- 间隙
Abstract: The reason of a canned-motor pump start failure is deduced in this paper. It is shown that the undersized gap of the lower guide bearing causes the start failure. By the stripping inspection data, the design value of the guide bearing gap, the cumulative departure of manufacturing assembly and the preloading of the bearing liner lead to the undersized gap. The test result shows that the improved canned-motor pump can start up successfully.
- Canned-motor Pump /
- Hot standby /
- Start failure /
- Analysis /
- Guide bearing /
- Gap