Experimental research on pressure fluctuation and vibration in a mixed flow pump

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• 作者：Kai Wang ; Houlin Liu ; Xiaohua Zhou…
• 关键词：Mixed flow pump ; Pressure fluctuation ; Vibration ; Experiment
• 刊名：Journal of Mechanical Science and Technology
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：30
• 期：1
• 页码：179-184
• 全文大小：2,660 KB
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• 作者单位：Kai Wang (1)
  Houlin Liu (1)
  Xiaohua Zhou (2)
  Wenbo Wang (1)
  
  1. National Research Center of Pumps and Pumping System Engineering and Technology, Jiangsu University, Zhenjiang, 212013, China
  2. Gree Electric Appliance Inc. of Zhuhai, Zhuhai, 519070, China
  
• 刊物类别：Engineering
• 刊物主题：Mechanical Engineering
  Structural Mechanics
  Control Engineering
  Industrial and Production Engineering
  
• 出版者：The Korean Society of Mechanical Engineers
• ISSN：1976-3824

文摘

To study the pressure fluctuation and vibration in mixed flow pumps, we chose a mixed flow pump with specific speed of 436.1 to measure. The time domains and frequency domain at each monitoring point on diffuser and outlet elbow were analyzed, as well as the vibration frequency domain characteristics at the impeller outlet and near the motor. The results show that the peak value of pressure fluctuation peak decreased gradually with the increase of flow rate. The pressure fluctuation of each monitoring point had periodicity, and the frequency domain dominated by blade passing frequency and multiple shaft frequency. The vibration frequency of each monitoring point occurred at shaft frequency and its multiple shaft frequency. The dominant frequency and the second frequency were distributed in shaft frequency and double shaft frequency.