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[1]郝英杰,顾伯勤,邵春雷.叶轮切割方式对离心泵外特性和压力脉动的影响[J].南京工业大学学报(自然科学版),2015,37(05):42-47.[doi:10.3969/j.issn.1671-7627.2015.05.007]
 HAO Yingjie,GU Boqin,SHAO Chunlei.Effects of impeller cutting ways on external performances and pressure fluctuation characteristics of centrifugal pump[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(05):42-47.[doi:10.3969/j.issn.1671-7627.2015.05.007]
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叶轮切割方式对离心泵外特性和压力脉动的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年05期
页码:
42-47
栏目:
出版日期:
2015-09-10

文章信息/Info

Title:
Effects of impeller cutting ways on external performances and pressure fluctuation characteristics of centrifugal pump
文章编号:
1671-7627(2015)05-0042-06
作者:
郝英杰顾伯勤邵春雷
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
HAO YingjieGU BoqinSHAO Chunlei
College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
离心泵 叶轮切割方式 正切 斜切 压力脉动
Keywords:
centrifugal pump impeller cutting way straight cutting oblique cutting pressure pulsation
分类号:
TH311
DOI:
10.3969/j.issn.1671-7627.2015.05.007
文献标志码:
A
摘要:
利用Fluent软件对IS100-65-200型中比转速离心泵在正切和斜切2种叶轮切割方式下的内部流场进行数值模拟,分析不同叶轮切割量和切割角度下泵的外特性和压力脉动特性。外特性预测结果表明:正切时,随着切割量的增加,泵的扬程逐渐降低; 在切割量不大于10%时,泵的效率略有提高; 在切割量大于10%时,泵的效率降低。斜切时,泵的扬程随着切割角度增加而降低; 切割角在0°~20°范围内,泵的效率随着切割角度增加变化不大; 切割角在20°~32°范围内,泵的效率逐渐下降。相同叶轮外径情况下,正切时泵的效率大于斜切时泵的效率。内部流动分析表明:正切时,压力脉动幅值随着叶轮外径的减小而减小; 斜切时,随着切割角的增大,压力脉动幅值先减小后增加,切割角度为20°时,压力脉动幅值最小; 2种切割方式下,各个监测点压力脉动主频均为叶轮通过频率。
Abstract:
The flow fields in IS100-65-200 type middle specific speed centrifugal pump were numerically simulated by Fluent software in the impeller straight cutting and impeller oblique cutting ways.The external performances and the pressure fluctuation characteristics on different cutting values and cutting angles were analyzed.Results of the external performance prediction showed that in the straight cutting way,the head decreased with increasing the cutting value.The efficiency increased slightly when the cutting value was less than 10% and decreased when it was larger than 10%.The head of the pump decreased with increasing the cutting angle in the oblique cutting way.When the cutting angle changed from 0° to 20°,the efficiency of the pump changed slightly,and decreased when the cutting angle changed from 20° to 32°.For impellers with the same diameter,the efficiency of the pump in the straight cutting way was higher than that in the oblique cutting way.Results of internal flow analysis showed that,in the straight cutting way,the amplitude of pressure pulsation decreased with decreasing impeller diameter.In the oblique cutting way,the amplitude of pressure pulsation firstly decreased and then increased with the increase of cutting angle,and it reached to the minimum when the cutting angle was 20°.The dominant frequencies of pressure pulsation at the monitoring points were all the blade passing frequencies in the two cutting ways.

参考文献/References:

[1] González J,Parrondo J,Santolaria C,et al.Steady and unsteady radial forces for a centrifugal pump with impeller to tongue gap variation[J].Journal of Fluids Engineering,2006,128(3):454-462.
[2] Mario S,Hrvoje K,Igor S.Improving centrifugal pump efficiency by impeller trimming[J].Desalination,2009,249(2):654-659.
[3] 关醒凡.现代泵技术手册[M].北京:宇宙出版社,1995.
[4] 宇晓明,邵春雷,顾伯勤.叶轮切割方式对IS100-65-200型离心泵性能的影响[J].南京工业大学学报:自然科学版,2013,35(1):109-113.
[5] 宇晓明,顾伯勤,邵春雷.叶轮切割方式对中比转数离心泵性
  能的影响[J].农业工程学报,2012,28(21):29-36.
[6] 谈明高,刘厚林,王勇,等.叶轮外径对离心泵内流影响的CFD分析[J].排灌机械,2009,27(5):314-318.
[7] 刘阳,袁寿其,袁建平.离心泵的压力脉动研究进展[J].流体机械,2008,36(9):33-36.
[8] 张兄文,李国君,李军.离心泵蜗壳内部非定常流动的数值模拟[J].农业机械学报,2006,37(6):63-68.
[9] Spence R,Amaral-Teixeira J.Investigation into pressure pulsations in a centrifugal pump using numerical methods supported by industrial tests [J].Computers & Fluids,2008,37(6):690-704.
[10] Spence R,Amaral-Teixeira J.A CFD parametric study of geometrical variations on the pressure pulsations and performance characteristics of a centrifugal pump [J].Computers & Fluids,2009,38(6):1243-1257.
[11] 朱荣生,苏保稳,杨爱玲,等.离心泵压力脉动特性分析[J].农业机械学报,2010,41(11):43-47.
[12] 姚志峰,王福军,杨敏,等.叶轮形式对双吸离心泵压力脉动特性影响试验研究[J].机械工程学报,2011,47(12):133-137.
[13] 邵春雷.离心泵内部流动及动态虚拟设计方法研究[D].南京:南京工业大学,2008.

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备注/Memo

备注/Memo:
收稿日期:2014-06-03
基金项目:国家自然科学基金(51306087); 江苏省自然科学基金(BK2012430); 江苏省普通高校研究生科研创新计划(CX10B_166Z)
作者简介:郝英杰(1985—),女,内蒙古通辽人,博士生,主要研究方向为流体测控技术和流体机械; 顾伯勤(联系人),E-mail:bqgu@njtech.edu.cn.
引用本文:郝英杰,顾伯勤,邵春雷.叶轮切割方式对离心泵外特性和压力脉动的影响[J].南京工业大学学报:自然科学版,2015,37(5):42-47..
更新日期/Last Update: 2015-09-20