Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter

›› 2011, Vol. 19 ›› Issue (4): 626-635.

Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter

徐聪¹, 刘斌斌², 景山¹

1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
2. China Nuclear Power Engineering Co.Ltd, Beijing 100840, China

收稿日期:2010-10-13 修回日期:2011-06-26 出版日期:2011-08-28 发布日期:2011-08-28
通讯作者: XU Cong,E-mail:c-xu@mail.tsinghua.edu.cn

Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter

XU Cong¹, LIU Binbin², JING Shan¹

1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;
2. China Nuclear Power Engineering Co.Ltd, Beijing 100840, China

Received:2010-10-13 Revised:2011-06-26 Online:2011-08-28 Published:2011-08-28

摘要/Abstract

摘要： A compact pneumatic pulse-jet pump with a Venturi-like reverse flow diverter, which consists of a nozzle and diffuser, is designed for lifting and transporting a hazardous fluid through a narrow mounting hole.The pumping performance for a liquid mixture or a liquid-solid mixture is examined in terms of the effects of liquid viscosity, particle mass concentration, lifting height, and compression pressure.Results reveal that the pumping performance of the compact pneumatic pulse-jet pump is controlled by jet inertia and the flow resistance of the riser tube positioned after the diffuser.The capacity of the compact pneumatic pulse-jet pump increases with compression pressure and decreases with liquid viscosity.However, even for a liquid mixture with a high viscosity of 7.38 mPa·s, a pumping capacity of 170.7 L·h^-1 was observed.For a liquid mixture, two dimensionless indices of performance were found to be the ratio of Euler numbers Eu_out/Eu_DV and the suction factor q.As the liquid-solid mixture was lifted to elevation of 6.74 m by the compact pump, the particle size distributions of the liquid-solid mixture in the tank and from the riser tube outlet were determined by a particle size analyzer and found to coincide well.

关键词: jet pump, pulse-jet, pneumatic conveying, compact reverse flow diverter, liquid-solid mixture

Abstract: A compact pneumatic pulse-jet pump with a Venturi-like reverse flow diverter, which consists of a nozzle and diffuser, is designed for lifting and transporting a hazardous fluid through a narrow mounting hole.The pumping performance for a liquid mixture or a liquid-solid mixture is examined in terms of the effects of liquid viscosity, particle mass concentration, lifting height, and compression pressure.Results reveal that the pumping performance of the compact pneumatic pulse-jet pump is controlled by jet inertia and the flow resistance of the riser tube positioned after the diffuser.The capacity of the compact pneumatic pulse-jet pump increases with compression pressure and decreases with liquid viscosity.However, even for a liquid mixture with a high viscosity of 7.38 mPa·s, a pumping capacity of 170.7 L·h^-1 was observed.For a liquid mixture, two dimensionless indices of performance were found to be the ratio of Euler numbers Eu_out/Eu_DV and the suction factor q.As the liquid-solid mixture was lifted to elevation of 6.74 m by the compact pump, the particle size distributions of the liquid-solid mixture in the tank and from the riser tube outlet were determined by a particle size analyzer and found to coincide well.

Key words: jet pump, pulse-jet, pneumatic conveying, compact reverse flow diverter, liquid-solid mixture

徐聪, 刘斌斌, 景山. Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter[J]. , 2011, 19(4): 626-635.

XU Cong, LIU Binbin, JING Shan. Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter[J]. , 2011, 19(4): 626-635.

参考文献

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Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter

Compact Pneumatic Pulse-Jet Pump with Venturi-Like Reverse Flow Diverter

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