排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2011, Vol. 29 Issue (5): 418-422    DOI: 10.3969/j.issn.1674—8530.2011.05.010
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Development and numerical analysis of new type shaft tubular pumping system
Zhu Honggeng1, Dai Longyang2, Zhang Rentian1,3, Zhu Guoxian4, Lü Saijun2, Fei Hairong2
(1.College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China; 2.Yancheng Surveying & Design Institute of Water Resources, Yancheng, Jiangsu 224002, China; 3.Jiangsu Surveying & Design Institute of Water Resources Co.Ltd., Yangzhou, Jiangsu 225009, China; 4.Yancheng Water  Project Administration Department, Yancheng, Jiangsu 224002, China)
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Abstract Based on comparing structural features of different tubular pumping systems and technical characteristics of cut off devices in common use, aiming at the characteristics of low head, shorter  annual  operation time and higher safety and reliability requirements of city flood control pumping stations, a new type shaft tubular pumping system was invented, which is composed of a shaft suction box, a tubular pump and a siphon type discharge passage with a vacuum breaker valve as cutoff device. Taking a real pumping station in Yancheng city as an example, the computational fluid dynamics  method  was adopted to analyze the internal flow of the new type model tubular pumping system and predict its energy performances. The time averaged Navier-Storks equations were closed by RNG k-ε turbulent model to adapt internal flow of siphon type discharge passage with larger curvatures. The method of multi-reference frame(MRF) was used to deal with the coupling of rotating impeller and static guide vane, and SIMPLEC algorithm was adopted to achieve the coupling solution of velocity and pressure. Computational results show that the internal flow of the new type shaft tubular pumping system through preliminary optimization is smooth, and the model pumping system efficiency reaches 56.0% when the design head and the relevant discharge are 1.15 m and 0.326 m3/s respectively, and up to 68.8% when the maximum head and the relevant discharge are 1.95 m and 0.296 m3/s respectively.
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Articles by authors
ZHU Hong-Geng
Dai-Long-Yang
Zhang-Ren-Tian
Zhu-Guo-Xian
吕Sai-Jun
Fei-Hai-Rong
Key wordsshaft tubular pumping system   cut off mode   internal flow pattern   numerical analysis   performance prediction   city flood control     
Received: 2011-02-10; Published: 2011-09-30
Cite this article:   
ZHU Hong-Geng, Dai-Long-Yang, Zhang-Ren-Tian et al. Development and numerical analysis of new type shaft tubular pumping system[J]. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(5): 418-422.
 
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