Abstract： Considering the energy consumption of the HP-pump for SWRO,a reasonable type of high pressure pump was selected,and a new structure of the axial suction segment multistage pump was proposed.Based on the existing effective hydraulic models,through optimizing several key hydraulic dimensions which affect the efficiency,six kinds of impeller models and two kinds of guide vanes were designed,and six groups of hydraulic models were assembled.Performance characteristics of these models were predicted by using the CFD technology.Two groups of high-efficiency hydraulic models were selec-ted to produce two single-stage model pumps for test research.The tests show that the capacity and head meet the requirements of the HP-pump,and the efficiency of the best model pump reaches to 79.72%.
[1]陈益棠,胡兆银.用海水淡化法解决海岛用水[J].水处理技术,2006,32(6):65-69.Chen Yitang,Hu Zhaoyin.A path to solve the shortage of fresh water resource in sea islands-seawater desalination[J].Technology of Water Treatment,2006,32(6):65-69.(in Chinese)[2]AI-Enezi G,Fawzi N.Design consideration of RO units:case studies[J].Desalination,2003,153(1-3):281-286.[3]Grundisch A,Schneider B P.Optimising energy consumption in SWRO systems with brine concentrators[J].Desalination,2001,138(1-3):223-229.[4]叶晓琰,许国乐,胡敬宁.反渗透海水淡化高压泵的优化选择[J].水处理技术,2008,34(9):79-81.Ye Xiaoyan,Xu Guole,Hu Jingning.The selection and optimization of high-pressure pump in reverse osmosis seawater desalination[J].Technology of Water Treatment,2008,34(9):79-81.(in Chinese)[5]Stover R L.Seawater reverse osmosis with isobaric energy recovery devices[J].Desalination,2007,203(1-3):168-175.[6]何希杰,黄毓文,赵艳霄,等.离心泵多参数对效率影响的大小和排序[J].排灌机械,2002,20(4):9-10.He Xijie,Huang Yuwen,Zhao Yanxiao,et al.The magnitude and ording of impeller multi-parameter effect on centrifugal pump efficency[J].Drainage and Irrigation Machinery,2002,20(4):9-10.(in Chinese)[7]刘在伦,邢乐斌,朱亮.潜水泵设计时值得注意的几个问题[J].排灌机械,2003,21(2):12-14.Liu Zailun,Xing Lebin,Zhu Liang.Several noteworthy problems on submersible pump design[J].Drainage and Irrigation Machinery,2003,21(2):12-14.(in Chinese)[8]赵万勇,张亮,王振,等.多级泵平衡盘灵敏性优化设计[J].排灌机械,2008,26(4):14-17.Zhao Wanyong,Zhang Liang,Wang Zhen,et al.Structural optimization design of balance disc in multistage pump for better sensitivity[J].Drainage and Irrigation Machinery,2008,26(4):14-17.(in Chinese)[9]关醒凡.现代泵技术手册[M].北京:宇航出版社,1995:521.[10]赵万勇,刘天宝,梁森.多级泵三间隙平衡盘间隙流动的理论分析[J].兰州理工大学学报,2006,32(6):62-64.Zhao Wanyong,Liu Tianbao,Liang Sen.Theoretical analysis of fluid flow within gaps in three-gap balance disc of multi-stage-section pump[J].Journal of Lanzhou University of Technology,2006,32(6):62-64.(in Chinese)
