Investigation on the Transient Characteristics of Self-Priming Pumps with Different Hub Radii

Self-priming pumps, important fluid equipment, are widely used in the disaster relief and emergency fields. Meanwhile, the impeller is the only rotational unit of the self-priming pump, which plays an essential part in the power capability of the pump. In this paper, impellers with different hub rad...

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Bibliographic Details
Published inMachines (Basel) Vol. 9; no. 12; p. 311
Main Authors Chang, Hao, Hong, Shiming, Wang, Chuan, Peng, Guangjie, Fan, Fengyi, Ye, Daoxing
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2021
Subjects
Disaster relief
Efficiency
Emergency equipment
Experiments
Flow characteristics
Fluid equipment
Force distribution
Genetic algorithms
hub radius
Impellers
Internal flow
Mathematical analysis
numerical simulation
Optimization
Pressure distribution
Priming
Pulsation
Pumps
self-priming pump
transient characteristics
Velocity
Vortices
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Summary:Self-priming pumps, important fluid equipment, are widely used in the disaster relief and emergency fields. Meanwhile, the impeller is the only rotational unit of the self-priming pump, which plays an essential part in the power capability of the pump. In this paper, impellers with different hub radii are proposed; by comparing the internal flow characteristics, blade surface load, pressure pulsation characteristics, and radial force distribution of each scheme, the relationship between transient characteristics and hub radius is obtained. The results present that the impeller with a large hub radius can not only weaken the pressure pulsation, blade surface load, and radial force distribution, but also improve the ability of the blade to work on the internal flow field. Finally, the relevant hydraulic experiment is conducted, with the difference between the experiment and calculation below 3%, which ensures the accuracy of the calculation results.
ISSN:2075-1702
2075-1702
DOI:10.3390/machines9120311