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

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Abstract

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.

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Authors and Affiliations

  1. National Research Center of Pumps and Pumping System Engineering and Technology, Jiangsu University, Zhenjiang, 212013, China

    Kai Wang, Houlin Liu & Wenbo Wang

  2. Gree Electric Appliance Inc. of Zhuhai, Zhuhai, 519070, China

    Xiaohua Zhou

Authors
  1. Kai Wang
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  2. Houlin Liu
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  3. Xiaohua Zhou
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  4. Wenbo Wang
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Corresponding author

Correspondence to Kai Wang.

Additional information

Kai Wang received his Ph.D. in Fluid Machinery and Engineering from Jiangsu University in 2011. He is currently an associate professor in National Research Center of Pumps and Pumping System Engineering and Technology, Jiangsu University, China. His research interests are in the areas of performance prediction and experimental measurement of pumps.

Houlin Liu received his Ph.D. in Fluid Machinery and Engineering from Jiangsu University in 2001. Dr. Liu is currently a professor in the National Research Center of Pumps and Pumping System Engineering and Technology, Jiangsu University, China. His research interests are in the areas of the theory, design, CAD and CFD of pumps.

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Wang, K., Liu, H., Zhou, X. et al. Experimental research on pressure fluctuation and vibration in a mixed flow pump. J Mech Sci Technol 30, 179–184 (2016). https://doi.org/10.1007/s12206-015-1221-8

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  • DOI: https://doi.org/10.1007/s12206-015-1221-8

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