• 机械仪表工程 •

### 中比转速无过载多级离心泵的叶轮设计方法

1. （1.浙江工业大学 机械工程学院， 杭州 310014； 2.过程装备及其再制造教育部工程研究中心，杭州 310014； 3.江苏双达泵阀集团有限公司， 江苏 靖江 214537）
• 收稿日期:2014-08-04
• 基金资助:

“十二五”国家科技支撑计划项目（2013BAF01B01）资助

### A Novel Design Method for Impeller of Medium Specific Speed Non-Overload Multistage Centrifugal Pumps

MA Yi1,2,MA Zhongqiang1,ZHANG Shengchang1,2,ZHANG Zhihong1,FAN Weigang3,WANG Jinquan3

1. (1. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; 2. Engineering Research Center of Process Equipment and Its ReManufacturing of the Ministry of Education, Hangzhou 310014, China; 3. Jiangsu Shuangda Pump and Valve Co. Ltd., Jingjiang 214537, Jiangsu, China)
• Received:2014-08-04

Abstract:

Abstract： To meet the demand of the non-overload characteristic of medium specific speed multistage centrifugal pumps, a formula for the design of impeller was derived by using empirical correlations, based on the theory of non-overload. Two pumps, the specific speeds of which were 89.3 and 135.0, were designed using this formula and the traditional formula, and the performance curves were obtained using Fluent. The results indicate that the extreme point of shaft power curve appeares in both of the pumps designed using the derived formula, and the coefficient K, the ratio of the maximal axle power to the power in designed working condition are 1.13 and 1.03, validiting the derived formula. Compared with the pumps designed using the traditional formula, the head of the pumps designed using the derived formula increases by 14.0% and 7.5%, and the efficiency increases by 2.68% and 1.03%. Meanwhile the radial dimension becomes smaller. The derived formulas can be used for medium specific speed non-overload multistage centrifugal pumps.