|Table of Contents|

Influence of volute case type for low-specific-speed pump on pump performance(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2015年03期
Page:
52-58
Research Field:
研究与设计
Publishing date:

Info

Title:
Influence of volute case type for low-specific-speed pump on pump performance
Author(s):
LIU Hai-li1;  ZHANG Li-qiang1;  LI Xue-hua1;  Lü Zhi-quan2
1. Beijing Aerospace Propulsion Institute, Beijing 100076, China； 2. Liaoyang Petrochemical Branch Co., CNPC, Liaoyang 111000, China
Keywords:
volute case passage;  circular-volute case passage;  high-speed centrifugal pump;  numerical simulation;  test
PACS:
V434.2-34
DOI:
-
Abstract:
The 3D steady turbulence numerical simulation of flow fields in the low-specific-speed case with volute passage and centrifugal pump with circular passage were performed separately by means of the fluid simulation software CFX. Furthermore, the tests were carried out. The calculated result of pump performance has a little deviation with experimental data. It means that the method is reasonable and effective. From comparison of two different pumps, the flow mechanism and loss of water power were found. The backflow and vortex caused by impact of fluid from the exit of volute case are obvious. Its pressure and relative velocity distribution is very different from other passages. This is the main reason of water power loss. The show that the performance of pump is most excellent when the ratio of throat area is 1.1:1 to the eighth section of the volute case, which provide a scientific basis for the improvement and further development of pump.

References:

[1]耿少娟, 聂超群, 黄伟光. 不同叶轮形式下离心泵整机非定常流场的数值研究[J]. 机械工程学报, 2006, 42(5): 27-31.
[2]黄思, 吴玉林. 离心泵全三维流场的大涡数值模拟[J]. 华南理工大学学报（自然科学版），2006, 34(4): 111-114.
[3]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.
[4]郭鹏程, 罗兴錡, 刘胜柱. 离心泵内叶轮与蜗壳间耦合流动的三维紊流数值模拟[J]. 农业工程学报, 2005, 21(8): 1-5.

[5]关醒凡. 现代泵理论与设计[M]. 北京: 中国宇航出版社, 2011.

[6]唐辉, 何枫. 离心泵内流场的数值模拟[J]. 水泵技术, 2002 (3): 3-8.
[7] ANSYS Inc. FLUENT user's guide[M]. [S.l.]: ANSYS Inc, 2009.
[8]沙玉俊. 高温高压离心泵三维湍流数值模拟及流动特性研究[D]. 北京: 清华大学热能工程系，2011.
[9]LOBANOFF V S, ROSS R R. Centrifugal pumps: design & application[M]. Houston, TX: Gulf Publishing Com- pany, 1992.
[10]张德胜, 施卫东, 陈斌, 等. 低比转速离心泵内部流场分析及试验[J]. 农业工程学报, 2010, 26(11): 108-113.

Memo

Memo:
-
Last Update: 1900-01-01