排灌机械工程学报
   Home  About Journal  Editorial Board  Author Center  Subscriptions    中文 
Journal of Drainage and Irrigation Machinery Engin  2019, Vol. 37 Issue (1): 7-12    DOI: 10.3969/j.issn.1674-8530.16.0266
article Current Issue | Next Issue | Archive | Adv Search Previous Articles  |  Next Articles  
Pressure fluctuation in multistage volute pump when first stage impeller trimmed
SHI Haixia, YANG Yafei, LI Yue, XU Wei
1. School of Mechanical Engineering,Hefei University of Technology,Hefei,Anhui 230009,China; 2. School of Automotive and Traffic Engineering,Hefei University of Technology,Hefei,Anhui 230009,China
 Download: PDF (3304 KB)   HTML (1 KB)   Export: BibTeX | EndNote (RIS)      Supporting Info
Abstract In order to study effects of trimmed double suction impeller on pressure pulsation in a double volute case, the first stage of a multistage volute pump was selected as a study object, steady and unsteady fluid flow simulations in the pump were performed based on the N-S equations, RNG k-ε turbulence model when the first stage double suction impeller was trimmed under different conditions, such as six trimmed quantities and four trimming patterns. Pressure fluctuations in time and frequency domains at monitoring points near the tongue and at the volute outlet point were obtained. The results show that impeller trimmed quantity has a greater influence on the pressure change near the tongue of double volute case, and the pressure variation amplitude is decreased firstly and then increases with increasing trimmed quantity, especially the pressure fluctuation is the smallest when the quantity is 0.98. Some trimming patterns can reduce the pressure fluctuation near the tongue in some degree, the pressure fluctuations under V cut and forward skew cut are smaller than those under the straight cut and backward skew cut, and the change in performance with backward skew cut is little smaller than the straight cut. At the volute outlet point, the pressure fluctuation is decreased with increasing trimmed quantity, but is less affected by the trimming patterns.
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
SHI Hai-Xia
YANG Ya-Fei
LI Yue
XU Wei-
Key wordsvolute type multistage pump   impeller cutting   double volute   pressure fluctuation   frequency spectra analysis     
Received: 2016-11-02;
Cite this article:   
SHI Hai-Xia,YANG Ya-Fei,LI Yue et al. Pressure fluctuation in multistage volute pump when first stage impeller trimmed[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(1): 7-12.
 
No references of article
[1] LI Qifei,*, WANG Yuankai, LIU Chao, ZHANG Jianxun, ZHANG Zhengjie, WANG Renben. Pressure fluctuation characteristics of Francis pump turbine in the hump zone[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 461-466.
[2] CHEN Jie, WANG Yong, LIU Houlin, SHAO Chang, ZHANG Xiang*. Internal flow and analysis of its unsteady characteristics in centrifugal pump with ultra-low specific-speed[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(5): 377-383.
[3] HAN Wei,, LI Xuefeng,*, SU Min, LI Rennian,, CHEN Hao,. Pressure fluctuation of solid-liquid flow in stator and rotor cascades of pump as turbine[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(2): 99-103.
[4] HE Naichang, TAN Minggao*, LIU Houlin, HUANG Xin, WU Xianfang. Test and analysis on pressure pulsation and hydraulic performance of saddle zone in axial flow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(2): 118-123.
[5] SU Shaohua,, LIU Zhuqing,*. Hydraulic performance of guide vane mixed-flow pump based on loading distribution[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(12): 1233-1239.
[6] CAI Xiaotong, SHI Weidong*, ZHANG Desheng, ZHANG Junjie, SHI Lei. Numerical simulation of internal flow-induced noise in submersible sewage pump based on the direct boundary element method[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(12): 1264-1269.
[7] LI Qifei,, ZHANG Zhen*, LI Rennian,, Song Qice, Zhang Jianxun. Pressure fluctuation in vaneless space of pump turbine with Misaligned Guide Vanes[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(12): 1270-1275.
[8] GAO Bo-1, DU Wen-Qiang-1, YANG Li-1, ZHANG Ning-1, WANG Hao-Yu-1, YUAN Xiao-2. Influences of volute cross-section area profile on performance of low-specific-speed centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(9): 749-.
[9] JI Lei-Lei, LI Wei, SHI Wei-Dong, SHAO Pei-Pei, JIANG Xiao-Ping. Influence of different blade numbers on unsteady pressure pulsations of internal flow field in mixed-flow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(8): 666-.
[10] HAN Dongdong, YU Fengrong, ZHANG Siqing. Numerical simulation of unsteady three-dimensional flow in turbine mode of a pump-turbine[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(4): 325-332.
[11] ZHANG Lin, SHI Weidong, ZHANG Desheng, SHI Lei. Analysis of instability flow on mixed-flow pump based on LES[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(4): 303-308.
[12] LIU Zhichao, KONG Fanyu, WANG Yang, XIE Shanfeng, ZHAO Lifeng. Effect of unequal spacing blade distribution on pressure fluctuation of self-priming vortex pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(2): 113-118.
[13] GU Yandong, YUAN Shouqi, PEI Ji, LIU Yong, CAO Jian. Effects of diffuser installation position on pressure fluctuation in the mixed flow pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(2): 93-99.
[14] LI Rennian,, CHEN Hao, HAN Wei,, LI Xuefeng, LIU Huijuan. Effect of particle size on flow in stator and rotor cascades of guide vane type centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(12): 1018-1023.
[15] Tan Minggao, Lian Yichao, Wu Xianfang, Ding Rong, Chen Kun. Unsteady dynamics in double channel pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(12): 1024-1029.

Copyright © 2011 Journal of Drainage and Irrigation Machinery Engineering
Support by Beijing Magtech Co.Ltd   E-mail: support@magtech.com.cn