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工程设计学报
Chinese Journal of Engineering Design  2007, Vol. 14 Issue (6): 443-448    DOI:
    
Technique method for failure detection of submersible pump
 CHEN  Wen-Hua1,2, FANG  Jing-Min1, MA  Zi-Kui1, QIAN   Ping1, WU  Hai-Jun1
1. Mechanical Design Institute， Zhejiang University, Hangzhou 310027, China;
2. School of Mechanical and Automatic Control, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Abstract  About 80%-90% failure of submersible pump is caused by failure of mechanical seals and bearings. Besides，other faults of submersible pump will usually increase electrical current of motor. According to this actual situation andprinciple, the authors figure out a detection method to judge the failure of submersible pump through detection of failure in mechanical seal and bearing, and whether fluctuation of electrical current is beyond standard. Because the leakage of mechanical seals are mainly due to excessive wear of the end face, and poor lubrication of bearings will lead to a early wear and then causes vibration on the pump,the authors developed the method on judging the failure of mechanical seals andbearingsby detecting water percentage of mechanical seals and acceleration of the pump’s vibration. The authors developed a failure detecting system of submersible pump, identified and verified the corresponding failure criterion through test.

Key words： submersible pump      failure mechanism      test technique     
Published: 28 December 2007
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CHEN Wen-Hua
FANG Jing-Min
MA Zi-Kui
QIAN Ping
WU Hai-Jun
Cite this article:

CHEN Wen-Hua, FANG Jing-Min, MA Zi-Kui, QIAN Ping, WU Hai-Jun. Technique method for failure detection of submersible pump. Chinese Journal of Engineering Design, 2007, 14(6): 443-448.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2007/V14/I6/443


潜水电泵失效检测技术与方法

按照潜水电泵80%～90%的失效或故障是由其机械密封和轴承的失效引起的实际情况，及潜水电泵其他故障的产生一般会引起电机电流增大的原理，提出通过检测机械密封和轴承是否失效、电流变化是否超标，来判断小型潜水电泵是否失效的检测方法。根据水泵机械密封主要是因端面过量磨损而产生泄漏，轴承则因润滑不良导致早期磨损而引起泵体振动的失效机理和特征，提出通过检测水泵密封腔的含水量和泵体振动加速度的大小来判别机械密封和轴承是否失效的方法和技术。研制开发了小型潜水电泵的失效检测系统，通过试验确定并验证了相应的失效判据。

关键词： 潜水电泵,  失效机理,  检测技术 
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