Journal of Mechanical Engineering >

2016 , Vol. 52 >Issue 4: 178 - 184

DOI: https://doi.org/10.3901/JME.2016.04.178

Theoretical Computation and Verification for Fluid Static Pressure in Centrifugal Pump Side Chamber

  • LIU Zailun ,
  • ZHANG Sen ,
  • SHAO Ancan ,
  • ZENG Jilai
Expand
  • 1. College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050;
    2. Engineering Institute of Wenzhou Pump & Valve, Lanzhou University of Technology, Wenzhou 325105;
    3. PRE(Fujian Pump Industry Co., Ltd., Songxi 353500

Online published: 2016-02-15

Fold

Abstract

The accurate description of fluid pressure distribution in pump side chamber is the core research problem for the study of impeller shroud force and also is a problem in the research field of pump. The fluid flow model of pump side chamber is built and some assumptions are made. Based on which, the fluid flow can be regarded as a two-dimension axial-symmetric viscous laminar flow. By comparing orders of magnitude, the Navier-Stokes equations for fluid flow in pump side chamber are simplified. Then they are integrated to obtain the analytical solutions. Therefore, the mathematical model of fluid pressure is obtained on the design condition. The correction coefficient of potential head is introduced to the model, which solves the problem of the calculation for liquid pressure in pump side chamber inlet. And the determination method of which is also provided. The IS80-50-315 type centrifugal pump is taken as the research object. The fluid pressure in pump side chambers is tested and theoretical calculated with different balance-hole radius. The analysis result shows that the theoretical curves agree well with the experimental ones. In addition, the reliability of the mathematical model of fluid pressure is also further verified by two typical test cases. The research is the supplement and perfection for the classical calculation method of fluid pressure in pump side chamber.

Key words： centrifugal pump; Navier-Stokes equations; pressure distribution; computation and verification

Cite this article

LIU Zailun , ZHANG Sen , SHAO Ancan , ZENG Jilai . Theoretical Computation and Verification for Fluid Static Pressure in Centrifugal Pump Side Chamber[J]. Journal of Mechanical Engineering, 2016 , 52(4) : 178 -184 . DOI: 10.3901/JME.2016.04.178

References

[1] 关醒凡. 现代泵理论与设计[M]. 北京：中国宇航出版社,2010.
GUAN Xingfan. Modern pumps theory and design[M]. Beijing：China Astronautic Publishing House,2010.
[2] MARJAN G,DUSAN F,BRANE S. Hydraulic axial thrust in multistage pumps-origins and solutions[J]. Journal of Fluids Engineering-transactions of the ASME,2002,124(2)：336-341.
[3] IINO T,SATO H,MIYASHIRO H. Hydraulic axial thrust in multistage centrifugal pumps[J]. ASME Journal of Fluids Engineering,1980,102(1)：64-69.
[4] 李仁年,权辉,韩伟. 螺旋离心泵轴向力的数值计算与分析[J]. 排灌机械工程学报,2012,30(5)：257-531.
LI Rennian,QUAN Hui,HAN Wei. Numerical calculation and analysis on axial thrust in screw centrifugal pump[J]. Drainage and Irrigation Machinery,2012,30(5)：257-531.
[5] 杨军虎,王春龙,李金平. 离心泵泵腔内液体流动数模型研究[J]. 农业机械学报,2003,34(6)：68-72.
YANG Junhu,WANG Chunlong,LI Jinping. Mathematical model of flow inside a centrifugal pump casing[J]. Transactions of the Chinese Society for Agricultural Machinery,2003,34(6)：68-72.
[6] 王秀勇,王灿星,黎义斌. 离心泵泵腔内流动特征的数值分析[J]. 农业机械学报,2009,40(4)：86-90.
WANG Xiuyong,WANG Canxing,LI Yibin. Numerical study of flow characteristics in the impeller side chamber of centrifugal pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(4)：86-90.
[7] 高红俐,杨继隆,叶力,等. 分段式多级离心泵的轴向力计算[J]. 化工机械,2000,27(5)：254-258.
GAO Hongli,YANG Jilong,YE Li,et al. The calculation of the axial force of the multistage impeller centrifugal pumps[J]. Chemical Machinery,2000,27(5)：254-258.
[8] 施卫东,李启锋,陆伟刚,等. 基于CFD的离心泵轴向力计算与实验[J]. 农业机械学报,2009,40(1)：60-63.
SHI Weidong,LI Qifeng,LU Weigang,et al. Estimation and experiment of axial thrust in centrifugal pump based on CFD[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(1)：60-63.
[9] 严俊锋,陈伟. 叶轮盖板侧的流动对离心泵泄漏量影响[J]. 火箭推进,2007,33(3)：20-25.
YAN Junfeng,CHEN Wei. The effect of flow in the impeller shroud on the leakage rate in a centrifugal pump[J]. Journal of Rocket Propulsion,2007,33(3)：20-25.
[10] 闻苏平,胡小文,王军. 旋转圆盘系统过流速度场叠加的研究[J].工程热物理学报,2009,30(1)：57-60.
WEN Suping,HU Xiaowen,WANG Jun. Investigation on superposed flow field in rotation disk system with forced through flow[J]. Journal of Engineering Thermo physics,2009,30(1)：57-60.
[11] 万毅,柯坚. 离心泵流道和泵腔内流场的实验研究[J].机械工程学报,2005,41(10)：226-230.
WAN Yi,KE Jian. Experimental research of flow field in the centrifugal impeller passage and volute[J]. Chinese Journal of Mechanical Engineering,2005,41(10)：226-230.
[12] ANKER J E. The impact rotor labyrinth seal leakage flow on the loss generation in an axial turbine[J]. Proceed-Dings of the Institution of Mechanical Engineers,2005,219(6)：92-95.
[13] 张国富,陈红勋,郭加宏. 斜流泵轴向推力的数值计算[J]. 机械工程学报,2001,37(7)：51-55.
ZHANG Guofu,CHEN Hongxun,GUO Jiahong. Numerical solution of axial thrust of mixed-flow pump[J]. Chinese Journal of Mechanical Engineering,2001,37(7)：51-55.
[14] 张凤羽,程效锐,王秀勇. 流体力学[M]. 北京：中国水利水电出版社,2012.
ZHANG Fengyu,CHENG Xiaorui,WANG Xiuyong. Hydrodynamics[M]. Beijing：China Water Power Press,2012.
[15] 刘在伦,许立中,贾晓,等. 离心泵浮动叶轮轴向间隙的液体流动分析及轴向力计算[J]. 农业工程学报,2013,29(12)：79-85.
LIU Zailun,XU Lizhong,JIA Xiao,et al. Analysis of liquid flow and axial force calculation in axial clearance for floating impeller of centrifugal pump[J]. Society for Agricultural Machinery,2013,29(12)：79-85.
[16] EVGENEV S S. Relief of axial forces with the aim of improving the reliability of turbomachinery[J]. Chemical and Petroleum Engineering,1995,31(11)：596-603.
[17] LIU Shuyan,YAN Weige. Analytical solution for laminar viscous flow in the gap between two parallel rotary disks[J]. Journal of Beijing Institute of Technology,1988,7(2)：113-119.
[18] 赵克强. 两平行旋转圆盘缝隙内的粘性流分析[J]. 兵工学报坦克装甲车与发动机分册,1990,38(2)：39-44.
ZHAO Keqiang. An analysis of viscous fluid flow in clearance of two parallel rotating discs[J]. Journal of China Ordnance Archies of Armored Vehicles with Engines,1990,38(2)：39-44.
[19] 刘在伦,何睿,范赢. 浮动叶轮平衡腔内液体泄漏量特性实验[J]. 农业机械学报,2011,42(9)：113-115.
LIU Zailun,HE Rui,FAN Ying. Fluid leakage characteristics test on the balance cavity of the floating impeller[J]. Society for Agricultural Machinery,2011,42(9)：113-115.
[20] 陈茂庆,陈超. 离心泵密封环泄漏量特性实验[J]. 石油机械,1993,21(1)：23-26.
CHEN Maoqing,CHEN Chao. Characteristic test of the leakage of the packing ring on centrifugal pump[J]. CPM,1993,21(1)：23-26.
[21] 刘延君,王伟,陆雄. 一种测量微小流量的方法[J]. 甘肃工业大学学报,2001,27(3)：44-46.
LIU Yanjun,WAN Wei,LU Xiong. A measuring method of small flow rate[J]. Journa1 of Gansu University of Technology,2001,27(3)：44-46.
[22] 刘在伦,董玮,张楠,等. 离心泵平衡腔液体压力的计算与验证[J]. 农业工程学报2013,29(20)：54-59.
LIU Zailun,DONG Wei,ZHANG Nan,et al. Calculation and validation of fluid pressure of balance cavity in centrifugal pump[J]. Transactions of the Chinese Society of Agricultural Engineering,2013,29(20)：54-59.
[23] 唐炘. 离心泵后盖板上压力分布规律的探索[J]. 水轮泵,1987(2)：30-34.
TANG Xin. The exploration of pressure distribution on centrifugal pump rear shroud[J]. Turbine Pump,1987(2)：30-34.
[24] 何玉洁,周广凤,潘金秋,等．海水淡化多机泵轴向力实验[J]．排灌机械,2009,27(2)：108-109.
HE Yujie,ZHOU Guangfeng,PAN Jinqiu,et al. Experiment for axial thrust of multi-stage pump for seawater desalination[J]. Drainage and Irrigation Machinery,2009,27(2)：108-109.
Options
Outlines

/

〈 〉

　 Copyright © Journal of Mechanical Engineering, All Rights Reserved.
Powered by Beijing Magtech Co. Ltd,.