Transient Flow Study of a Novel Three-Cylinder Double-acting Reciprocating Multiphase Pump

[+] Author and Article Information
Yi Ma

College of Mechanical Engineering, Zhejiang University of TechnologyEngineering Research Center of Process Equipment and Remanufacturing, Ministry of Education 18, Chaowang Road, Hangzhou, China

Huashuai Luo

College of Mechanical Engineering, Zhejiang University of Technology 18, Chaowang Road, Hangzhou, China

Tao Gao

Industrial and Logistics Engineering Design & Research Institute, China United Engineering Corporation 1060, Binan Road, Hangzhou, China

Zhihong Zhang

Research and Development Department, CRRC Corporation Limited 6, Chenfeng Road, Ziyang, China

1Corresponding author.

ASME doi:10.1115/1.4036715 History: Received December 15, 2016; Revised April 27, 2017


In petroleum industry, the stability of multiphase pumping is highly disturbed by the gas presence with high content and variable working conditions. This paper is focused on studying the whole working cycle of the novel three-cylinder double-acting reciprocating multiphase pump. Based on the theoretical analysis, the method of computational fluid dynamics is adopted to simulate the oil-gas flow in reciprocating multiphase pump. The numerical methodology, involving multiphase model, dynamic grid technique and user defined functions, is used to deal with in the calculation. The transient flow characteristics in pump cavity are obtained, and the flow ripples of reciprocating multiphase pump are analyzed. Furthermore, the effects of different operating parameters, such as suction and discharge pressures, inlet gas volume fraction on the capacity and stability of pump are studied. The results could help to develop and optimize the high-efficiency multiphase pump system.

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