Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture

›› 2008, Vol. 16 ›› Issue (4): 528-534.

Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture

朱祖超, 谢鹏, 偶国富, 崔宝玲, 李昳

Zhejiang Provincial Key Laboratory of Modern Textile Machinery, Zhejiang Sci-Tech University, Hangzhou 310018, China

收稿日期:2007-02-01 修回日期:2008-05-26 出版日期:2008-08-28 发布日期:2008-08-28
通讯作者: ZHU Zuchao, E-mail: zczhu@zjinfo.gov.cn
基金资助:
the National Natural Science Foundation of China(50576088,20706049);Zhejiang Provincial Key Science Foundation(2006C21064,2007C21067)

Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture

ZHU Zuchao, XIE Peng, OU Guofu, CUI Baoling, LI Yi

Zhejiang Provincial Key Laboratory of Modern Textile Machinery, Zhejiang Sci-Tech University, Hangzhou 310018, China

Received:2007-02-01 Revised:2008-05-26 Online:2008-08-28 Published:2008-08-28
Supported by:
the National Natural Science Foundation of China(50576088,20706049);Zhejiang Provincial Key Science Foundation(2006C21064,2007C21067)

摘要/Abstract

摘要： The design method of small-flow high-head centrifugal-vortex pump was presented. This pump, configured with inducer, complex-centrifugal impeller and open-vortex impeller, was put forward to deliver gas-liquid two-phase mixture. An HTB-5/60 type sample pump was developed and tested on a closed-loop test rig. Experimental studies on performance and cavitation tests for gas-liquid two-phase mixture were carried out compared with pure-water experimental results. Also the effect of gas phase on pump was analyzed and discussed. The experimental results show that performance and cavitation characteristics of the sample pump deteriorates progressively with increasing volume fraction of gas. When the total capacity Q_m is between 4.5 m³·h^-1 and 6 m³·h^-1 and the gas flow rate q_g below 0.66 m³·h^-1, or q_g/Q_m is lower than 15%, the characteristic curves are approximately parallel to those in pure water test, but the performance deteriorates sharply until an abrupt flow-cutting at a critical volume fraction of gas. This pump is found suitable for transporting gas-liquid two-phase mixture when working around rated capacity of 5 m³·h^-1 with q_g/Q_m below 15%.

关键词: centrifugal-vortex pump, gas-liquid two-phase flow, performance and cavitation test

Abstract: The design method of small-flow high-head centrifugal-vortex pump was presented. This pump, configured with inducer, complex-centrifugal impeller and open-vortex impeller, was put forward to deliver gas-liquid two-phase mixture. An HTB-5/60 type sample pump was developed and tested on a closed-loop test rig. Experimental studies on performance and cavitation tests for gas-liquid two-phase mixture were carried out compared with pure-water experimental results. Also the effect of gas phase on pump was analyzed and discussed. The experimental results show that performance and cavitation characteristics of the sample pump deteriorates progressively with increasing volume fraction of gas. When the total capacity Q_m is between 4.5 m³·h^-1 and 6 m³·h^-1 and the gas flow rate q_g below 0.66 m³·h^-1, or q_g/Q_m is lower than 15%, the characteristic curves are approximately parallel to those in pure water test, but the performance deteriorates sharply until an abrupt flow-cutting at a critical volume fraction of gas. This pump is found suitable for transporting gas-liquid two-phase mixture when working around rated capacity of 5 m³·h^-1 with q_g/Q_m below 15%.

Key words: centrifugal-vortex pump, gas-liquid two-phase flow, performance and cavitation test

朱祖超, 谢鹏, 偶国富, 崔宝玲, 李昳. Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture[J]. , 2008, 16(4): 528-534.

ZHU Zuchao, XIE Peng, OU Guofu, CUI Baoling, LI Yi. Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture[J]. , 2008, 16(4): 528-534.

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Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture

Design and Experimental Analyses of Small-flow High-head Centrifugal-vortex Pump for Gas-Liquid Two-phase Mixture

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