Abstract：Double-volute is an important case form employed to balance radial thrust caused by centrifugal impellers under off-design operating conditions.However,very few reports are found to demonstrate its hydraulic performance and design principles.In this paper we analyze and describe the latest foreign data pertinent to double-volute.Based on extensive experimental results,the data present a more accurate empirical formula to evaluate radial thrust balancing effect between single volute and double-volute,and among different double-volute structures.We also show two approaches to determine outer sections of double-volute passage with the same flow rate: one is based on functions in foreign literatures;the other based on principle of conservation law of moment of momentum.
严敬；谢功耋；张江源；阚能琪. 国外一种离心泵双蜗壳设计方法的介绍和分析[J]. 排灌机械工程学报, 2008, 26(6): 46-49.
YAN Jing, XIE Gong-die, ZHANG Jiang-yuan, KAN Neng-qi. Analysis and brief introduction for a foreign-designed centrifugal pump of double-volute. Journal of Drainage and Irrigation Machinery Engin, 2008, 26(6): 46-49.
[1] Lobanoff V S,Ross R R.Centrifugal pumps:design and application[M].Houston:Gulf Publicating Company,1996[2] 严敬,陈丹,赵琴.对国外一种最新离心泵蜗壳设计资料的分析[J].水泵技术,2005(5):12-13[3] 严敬.低比转速离心泵--原理、参数优化及绘形[M].成都:四川科学技术出版社,1998[4] 丁成伟.离心泵与轴流泵[M].北京:机械工业出版社,1984[5] Kelder,Dijikers,Esch.Experimental and theoretical study of the flow in the volute of a low specific-speed pump[J].Fluid Dynamics Research,2005(28):267-280[6] 谈明高,刘厚林,袁寿其.离心泵水力损失的计算[J].江苏大学学报(自然科学版),2007,28(5):405-407[7] 王晓燕,刘宜,陈玉芳.HD型石油化工流程泵双蜗壳内部流场数值计算[J].排灌机械,2007,25(1):21-24[8] 侯永胜,兰才有,仪修堂.离心泵涡室断面设计研究[J].节水灌溉,2007(7):28-29[9] 仪修堂,兰才有,朱勇.AutoCAD和Execl在离心泵水力设计中的应用[J].水泵技术,2006(1):28-29[10] LI Jun,FENG Zhen-ping,TSUKAMOTO Hiroshi.Hydrodynamic optimization design of low solidity vaned diffuser for a centrifugal pump using genetic algorithms[J].Journal of Hydrodynamics Series B,2004,16(2):186-193[11] Shahram D,Ahmad N.Theoretical,numerical and experimental investigation of centrifugal pumps inreverse operation[J].Experimental Thermal and Fluid Science,2008,32(8):1620-1627
