Research on the Rotation Cavitation Performance of High-speed Rotation Centrifugal Pump with Different Pre-positioned Inducers

GUO Xiaomei; LI Yi; CUI Baoling; ZHU Zuchao

doi:10.7527/S1000-6893.2013.0275

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2013 , Vol. 34 >Issue 7: 1572 - 1581

DOI: https://doi.org/10.7527/S1000-6893.2013.0275

Fluid Mechanics and Flight Mechanics

Research on the Rotation Cavitation Performance of High-speed Rotation Centrifugal Pump with Different Pre-positioned Inducers

GUO Xiaomei ,
LI Yi ,
CUI Baoling ,
ZHU Zuchao

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1. Department of Mechanical and Electrical Engineering, Zhejiang Water Conservancy and Hydropower College, Hangzhou 310018, China;
2. The Provincial Key Laboratory of Fluid Transmission Technology, Zhejiang Sci-Tech University, Hangzhou 310018, China

Received date: 2012-09-12

Revised date: 2012-11-28

Online published: 2012-12-11

Supported by

National Natural Science Foundation of China (51249003); Zhejiang Province Public Industrial Project(2012C21013); Open Fund Project of Priority among Priorities Discipline of Zhejiang Sci-Tech University(ZSTUMD2011A007)

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Abstract

Flow cavitation simulation and cavitation characteristics experiment of a high-speed centrifugal pump are carried out. The pump is equipped respectively without a inducer, with a pre-positioned equal pitch inducer, a pre-positioned variable pitch inducer and a pre-positioned shunt type inducer. The research of the external characteristics experiment reveals that the head of the centrifugal pump with a pre-positioned shunt type inducer is highest, next is the pump with a pre-positioned variable pitch inducer, while the lowest is that with a pre-positioned equal pitch inducer. The research of the cavitation experiment and simulation shows that the cavitation performance of the centrifugal pump with a pre-positioned equal pitch inducer is best, next is the pump with a pre-positioned shunt type inducer, and the last is that with a pre-positioned variable pitch inducer. Cavitation occurs easily on the outside edge of the inducer blade at the suction surface as well as at the outlet near the hub. A comparison of the cavitation of the impeller and the inducer shows that the degree of the cavitation of the inducer is not directly proportional to that of the impeller.

Key words： centrifugal pump; inducer; cavitation; numerical simulation; cavitation test

Cite this article

GUO Xiaomei , LI Yi , CUI Baoling , ZHU Zuchao . Research on the Rotation Cavitation Performance of High-speed Rotation Centrifugal Pump with Different Pre-positioned Inducers[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(7) : 1572 -1581 . DOI: 10.7527/S1000-6893.2013.0275

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