Single Stage Horizontal Self-Priming Pump System Assembly and Kinematics Simulation

Zhang, Yuan; Jiang, Jiliang; Zhang, Liyuan; Wei, Qiang

doi:10.1109/acn.2015.16

Cited by 2 publications

(1 citation statement)

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“…During the self-priming operation of external mixing pumps, the reflux liquid primarily returns through the reflux hole and contributes to the exhaust process [5]. The reflux hole is a crucial structural element that plays a pivotal role in determining the self-priming performance of a self-priming pump [6]. Mou et al [7] numerically simulated the self-priming pump process under four different return areas and found that the flow in the pump cavity became complex due to the existence of vortices.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on the Effect of the Backflow Hole Position on the Performances of a Self-Priming Pump

Wang,

Cao,

Wang

et al. 2024

FDMP

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A self-priming pump is a centrifugal pump that has the ability to prime itself. Typically, its performance depends on the configuration of its reflux hole. In this study, the ANSYS FLUENT software is used to investigate the effects of three different radial positions of the reflux hole on gas-liquid two-phase distribution, pressure pulsation, and imp during self-priming. The research results indicate that: (1) The effective channel size for the reflux liquid to enter the volute varies depending on the location of the reflux hole. The effect of the impeller rotation on the reflux liquid becomes more obvious as the setting distance of the reflux aperture decreases. (2) The position of the reflux hole significantly affects the gas phase mass fraction inside the impeller, resulting in a significant reduction in the time it takes for the mass fraction to exceed 80%. (3) The position of the reflux hole significantly affects the average pressure on each monitoring surface. (4) Placing the reflux hole at a excessively distant radial distance can result in an excessive vertical component. (5) The self-priming performance of the pump can be improved to some extent by placing the return hole at a small radial distance.

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Section: Introductionmentioning

confidence: 99%

A Numerical Study on the Effect of the Backflow Hole Position on the Performances of a Self-Priming Pump

Wang,

Cao,

Wang

et al. 2024

FDMP

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Effect of Reflux Hole on the Transient Flow Characteristics of the Self-Priming Sewage Centrifugal Pump

Zhou

Mou

et al. 2019

JAFM

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The reflux hole has a large effect on the performance of self-priming centrifugal pumps. In order to study the effects of the reflux hole on the performance and transient flow characteristics of the self-priming centrifugal pump, four different areas of the reflux hole inside an external mixed self-priming pump were proposed. The 3D transient flow was numerically simulated under different operating conditions for the investigated pump. The differential pressure, reflux quantity and transient flow characteristics near the reflux hole were analysed, and then the effects of the reflux hole area on the pressure fluctuation characteristics and performance of the pump were further researched. The results show that the differential pressure and reflux quantity is zero around the best-efficiency point. The vorticity magnitude near the exit of the reflux hole is significant, and the unsymmetrical flow structures represent periodic motion over time in the cross-section. The pressure fluctuation intensities of monitoring points P2-P5 upstream of the reflux hole were generally larger than others and decreased with a decrease in reflux hole area. With a decrease of the reflux hole area, the performance of the pump improved to some extent.

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Single Stage Horizontal Self-Priming Pump System Assembly and Kinematics Simulation

Cited by 2 publications

References 0 publications

A Numerical Study on the Effect of the Backflow Hole Position on the Performances of a Self-Priming Pump

A Numerical Study on the Effect of the Backflow Hole Position on the Performances of a Self-Priming Pump

Effect of Reflux Hole on the Transient Flow Characteristics of the Self-Priming Sewage Centrifugal Pump

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