Abstract：The high pressure pump for seawater reverse osmosis desalination systems is an axial suction segment multi-stage pump. In order to improve the efficiency and stability of rotor system, the rotor-bearing system for different stages high pressure pump of seawater reverse osmosis desalination systems is mode analyzed using ANSYS. The rotor system critical speed are calculated, and the relationship between the stage number and the critical speed as well as the logarithmic decay rate is studied. The optimal selection for stage number is discussed under consideration of the relationship between pump efficiency and stage number. The results show that 6 stages is more reasonable for rotor system stability and efficiency. Some references on selecting reasonable parameters for this type pump design are proposed.
胡敬宁, 江 伟, 叶晓琰, 刘三华. 万吨级反渗透海水淡化高压泵级数的优化选择[J]. 排灌机械工程学报, 2010, 28(1): 43-46.
Hu Jingning, Jiang Wei, Ye Xiaoyan, Liu Sanhua. Optimal selection for stage number of high pressure multi-stage pump for 10 k ton-scale reverse osmosis desalination systems. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(1): 43-46.
[1]Gründisch A,Schneider B P.Optimising energy consumption in SWRO systems with brine concentrators[J].Desalination,2001,138(1/3):223-229.[2]沈永娟,施卫东,张德胜.ANSYS二次开发在泵轴强度计算中的应用[J].排灌机械,2007,25(4):18-21.Shen Yongjuan,Shi Weidong,Zhang Desheng.Application of the redevelopment of ANSYS in calculating the shaft intensity of pumps[J].Drainage and Irrigation Machinery,2007,25 (4):18-21.(in Chinese)[3]施卫东,颜品兰,蒋小平,等.基于ANSYS/PDS的泵轴可靠性分析[J].排灌机械,2008,26(5):1-4.Shi Weidong,Yan Pinlan,Jiang Xiaoping,et al.Probabilistic analyse of pump shaft based on ANSYS/PDS[J].Drainage and Irrigation Machinery,2008,26(5):1-4.(in Chinese)[4]Yang Wenxian,Tavner P J.Empirical mode decomposition,an adaptive approach for interpreting shaft vibratory signals of large rotating machinery[J].Journal of Sound and Vibration,2009,321(3/5):1144-1170.[5]Wu Jiajang.Torsional vibration analyses of a damped shafting system using tapered shaft element[J].Journal of Sound and Vibration,2007,306(3/5):946-954.[6]Yao Zhishu,Chang Hua,Rong Chuanxin.Research on stress and strength of high strength reinforced concrete drilling shaft lining in thick top soils[J].Journal of China University of Mining & Technology,2007,17(3):432-435.[7]齐学义,王岩,敏政.多级泵轴断裂分析[J].江苏大学学报:自然科学版,2008,29(6):502-506.Qi Xueyi,Wang Yan,Ming Zheng.Analysis of multistage pump shaft fracture[J].Journal of Jiangsu University:Natural Science Edition,2008,29(6):502-506.(in Chinese)[8]董世民,李志刚.螺杆泵采油杆柱扭转振动固有频率的计算方法[J].石油矿场机械,2006,35(3):34-37.Dong Shimin,Li Zhigang.Research on the mechanical model and nature frequencies of torsion vibration of rod string of screw production system[J].Oil Field Equipment,2006,35(3):34-37.(in Chinese)[9]陈春新,王乐勤.高压离心泵滑动轴承稳定性分析[J].流体机械,2009,37(1):38-40.Chen Chunxin,Wang Leqin.Stability analysis on the journal bearing in high pressure centrifugal pump[J].Fluid Machinery,2009,37 (1):38-40.(in Chinese)[10]Lazarkiewicz S,Troskolanski A T.Impeller Pumps[M].Oxford:Pergamon Press,1965:336-337
