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

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

• FLUID FLOW AND TRANSPORT PHENOMENA • Previous Articles Next Articles

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

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

通讯作者: XU Cong,E-mail:c-xu@mail.tsinghua.edu.cn

Abstract

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

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

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

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

References

1 Zhu, Z.C., Chen, Y., Jin, Q.M., Huang, D.H., “Study on high-speed centrifugal-regenerative pump with an inducer”, Chin. J. Chem. Eng., 10 (2), 137-141 (2002).
2 Cui, B.L., Zhu, Z.C., Zhang, J.C., Wu, Y., Chen, Y., “Improving suction performance of centrifugal pumps by using jetting device”, Chin. J. Chem. Eng., 12 (5), 628-632 (2004).
3 Zhu, Z.C., Xie, P., Ou, G.F., Cui, B.L., Li, Y., “Design and experimental analyses of small-flow high-head centrifugal-vortex pump for gas-liquid two-phase mixture”, Chin. J. Chem. Eng., 16 (4), 528-534 (2008).
4 Morgan, J.G., Holland, W.D., Pulsatile Fluidic Pump Demonstration and Predictive Model Application, ORNL, Oak Ridge (1986).
5 Smith, G.V., Lewis, B.E., Design of a Pulsed Mode Fluid Pump Using a Venturi Like Reverse Flow Diverter, ORNL, Oak Ridge (1987).
6 Fan, Y.F., Xu, C., Jing, S., “Experimental study on fundamental performance of reverse flow diverters”, Chinese Journal of Nuclear Science and Engineering, 28 (3), 280-288 (2008). (in Chinese)
7 Walkden, J., “Pneumatically driven reciprocating-jet pump:Performance of a servocontrolled valve system and of a pump operating with a molten salt at 1500℉”, In:1st Symp. on Jet Pumps and Ejectors, Fluid Engineering, BHRA, Bedford (1972).
8 Tippetts, J.R., Priestman, G.H., Thompson, D., “Developments in power fluidics for application in nuclear plant”, J. Dynamic Systems Measur. Control, 103, 342-351 (1981).
9 Tippetts, J.R., “A fluidic pump for use in nuclear fuel reprocessing”, In:Proc. 5th Int. Fluid Power Symp., BHRA, Bedford, Paper C2 (1978).
10 Shaw, H.M., Application of Power Fluidics in British Nuclear Reprocessing Plants, BNFL, Sellafield (1995).
11 Counce, R.M., Smith, G.V., “Performance characteristics of plane-wall Venturi-like reverse flow diverters”, Ind. Eng. Chem. Process Des. Dev., 23, 295-299 (1984).
12 Smith, G.V., Counce, R.M., “Performance characteristic of axisymmetric Venturi-like reverse flow diverter”, J. Fluid Control, 4, 19-39 (1986).
13 Mark, D.M., “Technology deployments for D&D applications”, AEA Technol., 10 (8), 481-486 (1973).
14 Gao, C.C., Wang, L.H., Chen, D.H., “Theoretical study on energy equilibrium of pulsed liquid jet pump”, Journal of North China Institute of Water Conservancy and Hydroelectric Power, 27 (2), 50-53 (2006). (in Chinese)
15 Fan, Y.F., “Experimental study on the performance of reverse flow diverters and pneumatic pulsed fluidic pump used in nuclear industry”, Master Thesis, Tsinghua University, Beijing (2008). (in Chinese)

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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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