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Article

A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance

1
Zhejiang Engineering Research Center for Advanced Hydraulic Equipment, School of Mechanical and Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China
2
College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China
3
Shimge Pump Industry (Hangzhou) Co., Ltd., Hangzhou 310018, China
*
Author to whom correspondence should be addressed.
Energies 2022, 15(13), 4617; https://doi.org/10.3390/en15134617
Submission received: 15 May 2022 / Revised: 18 June 2022 / Accepted: 21 June 2022 / Published: 24 June 2022
(This article belongs to the Special Issue Key Technologies and Challenges of Hydraulic Machinery and Systems)

Abstract

The self-priming pump is a kind of centrifugal pump product with self-priming function, and the structural parameters of its reflux hole determine the performance. In order to reveal the mechanism of the self-priming process, we summarized the influence of structure parameters of the reflux hole on the performance of the self-priming pump. In this study, the transparent experimental pump was designed and manufactured, and a visual test bench was built. The gas–liquid two-phase flow pattern during the self-priming process with different reflux hole structure parameters was captured by high-speed camera. Results showed that: (1) the reflux hole of the self-priming pump affected the self-priming performance of the pump by affecting the backflow rate of the gas and liquid phases during the self-priming process. (2) Due to the uneven distribution of liquid velocity in the pump, the position of reflux hole had an obvious impact on the duration of self-priming middle stage, and the shortest duration was 13 s when φ = +15° and the longest duration was 45 s when φ = −30°. (3) The diameter of reflux hole had a very significant impact on the duration of the self-priming middle stage, and the shortest duration was 17 s when d = 10 mm and the longest duration was 94 s when d = 0 mm.
Keywords: gas–liquid two-phase flow; self-priming process; reflux hole; visualization experiment gas–liquid two-phase flow; self-priming process; reflux hole; visualization experiment

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MDPI and ACS Style

Qian, H.; Wu, D.; Xiang, C.; Jiang, J.; Zhu, Z.; Zhou, P.; Mou, J. A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance. Energies 2022, 15, 4617. https://doi.org/10.3390/en15134617

AMA Style

Qian H, Wu D, Xiang C, Jiang J, Zhu Z, Zhou P, Mou J. A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance. Energies. 2022; 15(13):4617. https://doi.org/10.3390/en15134617

Chicago/Turabian Style

Qian, Heng, Denghao Wu, Chun Xiang, Junwei Jiang, Zhibing Zhu, Peijian Zhou, and Jiegang Mou. 2022. "A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance" Energies 15, no. 13: 4617. https://doi.org/10.3390/en15134617

APA Style

Qian, H., Wu, D., Xiang, C., Jiang, J., Zhu, Z., Zhou, P., & Mou, J. (2022). A Visualized Experimental Study on the Influence of Reflux Hole on the Double Blades Self-Priming Pump Performance. Energies, 15(13), 4617. https://doi.org/10.3390/en15134617

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