张生昌,马中强,马艺,张志鸿,邓鸿英,张华军
ZHANG Sheng-chang,MA Zhong-qiang,MA Yi,ZHANG Zhi-hong,DENG Hong-ying,ZHANG Hua-jun

• 1:浙江工业大学
• 2:过程装备及其再制造教育部工程研究中心
• 3:杭州市特种设备检测研究院

摘要(Abstract)：

对D450-60-10型中比转速离心泵进行无过载优化设计,原始方案采用模型换算法设计模型泵进行试验并换算得到原型泵性能,同时利用Fluent模拟得到模型泵和原型泵性能,对泵性能分析后提出基于叶片出口角、叶轮出口直径和叶轮出口宽度等结构参数的3种原型泵优化方案。结果表明:当叶片出口角β2=10°时,与β2=15°相比,功率曲线的拐点更接近额定工况点,且最大功率下降了6.78%,但会牺牲部分扬程;3种优化方案下离心泵都达到了无过载的要求,功率备用系数K均小于1.2;最佳方案(叶轮出口直径D2=0.49m,叶轮出口宽度b2=0.03m,叶片出口角β2=10°)的功率备用系数最低,为1.09,与原始方案相比,扬程和效率分别提高了6.94%、1.95%,为中比转速离心泵无过载设计提供了参考。
To meet the demand of a medium specific speed centrifugal pump for the non-overload characteristic,a series of optimizations were done on a pump D450- 60- 10. In the original scheme the theory of resemble conversion was applied for designing a model pump,and the corresponding test was carried out,after which the performance curve of the prototype pump was got,meanwhile,the Fluent simulations of the prototype pump and the model pump were done. Analyzing the performance of the pump,three optimized schemes were carried out based on the parameters such as the impeller outlet angle,the impeller outlet diameter and the impeller outlet width. The results indicate that when the impeller outlet angle is 10° the extreme point of shaft power curve appeases nearer the designed working condition than that when the outlet angle was 15°,and the maximal axle power decreases6. 78% while the head decreased too. All of the pumps among three optimized schemes reach the goal of non-overload,and the coefficient K,the ratio of the maximal axle power to the power in designed working condition,is less than 1. 2. In the best optimized scheme the impeller outlet angle is 10°,the impeller outlet diameter is 0. 49 m,the impeller outlet width is 0. 03 m,and the K in this scheme is the minimum among three schemes,meanwhile the head and the efficiency increase by 6. 94% and 1. 95% than that in the original design scheme. The investigation can provide certain scientific basis for the performance optimization of medium specific speed non-overload centrifugal pumps.

关键词(KeyWords)： 中比转速;离心泵;无过载;相似换算;优化设计
medium specific speed;centrifugal pump;non-overload;resemble conversion;optimization

Abstract:

Keywords:

基金项目(Foundation): “十二五”国家科技支撑计划资助项目(2013BAF01B01)

作者(Author): 张生昌,马中强,马艺,张志鸿,邓鸿英,张华军
ZHANG Sheng-chang,MA Zhong-qiang,MA Yi,ZHANG Zhi-hong,DENG Hong-ying,ZHANG Hua-jun

参考文献(References)：

• [1]袁寿其,胡博,陆伟刚,等.中比转数离心泵多工况设计[J].排灌机械工程学报,2012,30(5):497-502.
• [2]袁寿其.低比速离心泵理论与设计[M].北京:机械工业出版社,1997.
• [3]Shi Wei-dong,Long Fei,Li Yue,et al.Non-overload Design of Low Specific Speed Submersible Pump[C].ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting Collocated with 8th International Conference on Nanochannels,Microchannels,and Minichannels.American Society of Mechanical Engineer,2010:563-567.
• [4]施卫东,李辉,陆伟刚,等.进口预旋对低比速离心泵无过载性能的影响[J].农业机械学报,2013,44(5):50-54,112.
• [5]Zhang Hua,Chen Bin,Shi Wei-dong,et al.Effects of Contraction-type Impeller on Non-overloaded Performance for Low-specific-speed Sewage Pump[J].Journal of Mechainical Science and Technology,2014,28(3):937-944.
• [6]杨军虎,郭斌,王玥,等.无过载离心泵设计参数与性能关系研究[J].农业机械学报,2012,43(11):119-122,128.
• [7]司乔瑞,袁寿其,王川,等.低比速多级潜水泵优化设计[J].农业工程学报,2012,28(8):122-127.
• [8]张帆,袁寿其,付强,等.带分流叶片低比转速无过载离心泵优化设计[J].流体机械,2013,41(6):11-15,21.
• [9]Braun O,Avellan F,Dupont P.Unsteady Numerical Simulations of the Flow Related to the Unstable Energy-discharge Characteristic of a Medium Specific Speed Double Suction Pump[C].ASME/JSME 2007 5th Joint Fluids Engineering Conference.American Society of Mechanical Engineers,2007:971-978.
• [10]Zhang Fan,Yuan Shouqi,Fu Qiang,et al.Optimization Design and Inner Flow Analysis on a Medium-high Specific Speed Centrifugal Pump[C].ASME 2013 Fluids Engineering Division Summer Meeting.American Society of Mechanical Engineers,2013:1-7.
• [11]Hu Bo,Yuan Shouqi,Lu Weigang,et al.Numerical Optimal Design of a Non-overload Centrifugal Pump[C].ASME 2012 Fluids Engineering Division Summer Meeting Collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels,Microchannels,and Minichannels.American Society of Mechanical Engineers,2012:427-433.
• [12]李杰.煤矿井下排水系统运行可靠性研究与控制系统研制[D].太原:太原理工大学,2010.
• [13]SL140-2006.水泵模型及装置模型验收试验规程[S].
• [14]马艺,马中强,张生昌,等.高浓度固液两相球阀开启压差特性分析[J].流体机械,2014,42(12):31-37.
• [15]余伟炜,田阳,薛飞,等.热老化对主泵泵壳材料失效评定曲线的影响研究[J].压力容器,2014,31(5):16,27-33.
• [16]殷洪权.大型多级离心泵机组轴系的扭转振动分析[J].化工设备与管道,2014,51(5):57-61.
• [17]周君亮.低扬程泵和泵站水力装置原、模型参数换算研究(上)[J].江苏水利,2010,(1):8-9.