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| Hydraulic characteristics and axial force of micro vortex pumps |
| Zhang Feixi1, Wu Peng1, Wu Dazhuan1, Wang Leqin1, Zhang Huiping2 |
| 1.Institute of Process Equipment, Zhejiang University, Hangzhou, Zhejiang 310027, China; 2.Ningbo Rocket Automobile Parts Co. Ltd., Ningbo, Zhejiang 315318, China |
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Abstract Numerical simulation of a new shrouded impeller vortex pump was carried out. The method of solving steady three-dimensional incompressible continuity equation and RANS equations were employed to calculate the hydraulic performance of the vortex pump. The axial bearing mechanism of the oil film toward the impeller was analyzed, and further discussion about the influence of the wedge shaped groove on both sides of the impeller on the bearing capacity of the oil film was made. It was found that the predicted hydraulic property was consistent with test data, which proves the calculating model reliable. In addition, the results show that the axial supporting of floating impeller is rely on the oil film formed on both side of the impeller. The different thickness of oil film results in different radial pressure drops. The thinner one results in the slow pressure drop while the thicker one results in the uniform pressure, which causes an unequal force on impeller and provides the holding power. More-over, the wedge shaped structure enhances the supporting effect. The study is useful for the design and analysis of vortex pumps.
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Received: 10 December 2013
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| [1]Song J W,Engeda A,Chung M K. A modified theory for the flow mechanism in regenerative flow pump[J]. Journal of Power and Energy, 2003, 217(3):311-322.[2]赵王勇,张凡,王振,等.旋涡泵的研究现状与发展方向[J].中国农村水利水电,2010(4):70-73. Zhao Wangyong, Zhang Fan, Wang Zhen, et al. Research status and research prospect of vortex pumps[J]. China Rural Water and Hydropower,2010(4):70-73.(in Chinese)[3]袁丹青, 王冠军, 陈向阳,等.旋涡泵的研究现状与展望[J].排灌机械,2008,26(6): 63-68. Yuan Danqing, Wang Guanjun, Chen Xiangyang, et al. Research status and prospect of vortex pump[J]. Drai-nage and Irrigation Machinery,2008,26(6):63-68.(in Chinese)[4]沙溢,李金磊,刘祥松,等.自吸旋涡泵变转速性能与内部流场试验[J].农业机械学报,2009,40(12):119-124. Sha Yi, Li Jinlei, Liu Xiangsong, et al. Self-priming vortex pump variable speed performance and internal flow test[J]. Transactions of the Chinese Society of Agriculture Machinery,2009,40(12):119-124.(in Chinese)[5]Zhu Z C, Xie P, Ou G F,et al. Design and experimental analyses of small-flow high-head centrifugal-vortex pump for gas-liquid two-phase mixture[J]. Chinese Journal of Chemical Engineering, 2008,16(4):528-534.[6]王洋,傅剑辉,蒋其松.闭式叶轮叶片位置对旋涡泵性能的影响[J].农机化研究,2010,32(9):150-154. Wang Yang, Fu Jianhui, Jiang Qisong. The effect of the location of closed impeller blades on the performance of vortex pump[J].Journal of Agricultural Mechanization Research,2010,32(9):150-154.(in Chinese)[7]张刚.浮动式叶轮结构旋涡泵不稳定运行的问题研究[J].化工设备与管道,2008,45(6):35-37. Zhang Gang. Solution for instable performance of vortex pump with floating impeller structure[J].Process Equipent & Piping,2008,45(6):35-37.(in Chinese)[8]Quail F J, Scanlon T, Baumgartner A. Design study of a regenerative pump using one-dimensional and three-dimensional numerical techniques[J].European Journal of Mechanics—B/Fluids,2012,31(1):181-187.[9]Quail F J, Scanlon T, Strickland M. Development of a regenerative pump impeller using rapid manufacturing techniques[J]. Rapid Prototyping Journal,2010,16(5):337-344.[10]Raheel M M,Engeda A. Systematic design approach for radial blade regenerative turbomachines[J].Journal of Propulsion and Power,2005,21(5):884-892.[11]Badami M,Mura M. Theoretical model with experimental validation of a regenerative blower for hydrogen recirculation in a PEM fuel cell system[J].Energy Conversion and Management,2010,51(3):553-560.[12]王福军. 计算流体动力学分析[M].北京:清华大学出版社,2004.[13]李昳,盛英英.气液混输旋涡泵内部气相分布与性能预测研究[J].机电工程,2009,26(7):32-33. Li Yi, Sheng Yingying. Study on performance prediction and gas-phase distribution in a gas-liquid two-phase vortex pump[J]. Mechanical & Electrical Engineering Magazine,2009,26(7):32-33.(in Chinese)[14]Caridad J,Kenyery F.CFD analysis of electric submersible pumps(ESP)handling two-phase mixtures[J].Journal of Energy Resources Technology, 2004,126(2):99-104.[15]邱宣怀.机械设计[M]. 4版.北京:高等教育出版社,2010. |
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