[1]成立,颜红勤*,蒋红樱,等.叶顶间隙对蜗壳式混流泵流动特性影响研究[J].江苏水利,2024,(11):1-7,11.
 CHENG Li,YAN Hongqin,JIANG Hongying,et al.Research on effect of tip clearance on flow characteristics of volute-type mixed-flow pump[J].JIANGSU WATER RESOURCES,2024,(11):1-7,11.
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叶顶间隙对蜗壳式混流泵流动特性影响研究()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2024年11期
页码:
1-7,11
栏目:
水利规划与设计
出版日期:
2024-11-15

文章信息/Info

Title:
Research on effect of tip clearance on flow characteristics of volute-type mixed-flow pump
文章编号:
1007-7839(2024)11-0001-0007
作者:
成立1颜红勤2*蒋红樱2潘卫锋3徐文涛1李加旭1
(1. 扬州大学 水利科学与工程学院,江苏 扬州 225009;2. 江苏省水利工程科技咨询股份有限公司,江苏 南京 210029;3. 江苏省骆运水利工程管理处,江苏 宿迁 223800)
Author(s):
CHENG Li1 YAN Hongqin2 JIANG Hongying1 PAN Weifeng3 XU Wentao1 LI Jiaxu1
(1. College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225100 China;2. Jiangsu Water Conservancy Engineering Technology Consulting Co., Ltd., Nanjing 210029 China;3. Luoyun Hydraulic Project Management Division of Jiangsu Province, Suqian 223800 China)
关键词:
蜗壳式混流泵计算流体力学叶顶间隙叶尖泄漏
Keywords:
volute-type mixed-flow pump computational fluid dynamics tip clearance tip leakage
分类号:
X824
文献标志码:
A
摘要:
采用计算流体力学(CFD)数值模拟技术,研究了蜗壳式混流泵在不同叶顶间隙下的水力性能及内部流动特性。通过对流场、涡流和压力分布的分析,揭示了叶顶间隙变化对泵装置扬程、效率及运行稳定性的影响。结果表明,随着间隙尺寸的增大,混流泵的整体效率逐渐下降,且对大流量工况的影响尤为显著。同时,叶顶间隙的增大会导致叶轮区域泄漏涡的增强,影响泵的运行稳定性。
Abstract:
Computational Fluid Dynamics (CFD) simulation technique is used to investigate the hydraulic performance and internal flow characteristics of a volute-type mixed-flow pump under varying tip clearances. Through analysis of flow fields, vortex formation, and pressure distribution, the effects of tip clearance changes on the pump’s head, efficiency, and operational stability are revealed. The results show that with the increase of tip clearance, the overall efficiency of the mixed-flow pump gradually decreases, with the most significant impact observed under high-flow conditions. At the same time, the increase in tip clearance will lead to an increase in leakage vortices in the impeller area, affecting the operating stability of the pump.

参考文献/References:

[1]XU W,CHENG L,LEI S,et al. Mixed-flow pump cavitation characteristics extraction based on power spectrum density through pressure pulsation signal analysis [1]. Mech. Syst. Signal. Process,2024,208:110904.
[2]YU L,CHENG L,XU W,et al. Study on the influence of tip clearance on cavitation performance and entropy production of an axial flow pump[J]. J. Mar. Sci. Eng,2024,12:101.
[3]胡全友,刘小兵,赵琴,等. 蜗壳式混流泵压力脉动特性研究[J]. 人民长江,2016,47(10):76-80,95.
[4]高海司,裴吉,袁寿其,等. 蜗壳式混流泵叶轮部件湿模态流固耦合分析[J]. 流体机械,2018,46(1):46-51,5.
[5]鲁阳平,马灿,谭磊,等. 混流泵启动过程瞬态性能理论模型[J]. 清华大学学报(自然科学版),2022,62(12):1938-1944.
[6]黎义斌,毕祯,李仁年,等. 不同叶顶间隙下斜流泵轮缘压力脉动特性的数值分析[J]. 水利学报,2015,46(4):497-504.

备注/Memo

备注/Memo:
收稿日期:2024-09-27
基金项目:江苏省水利科技项目(2022055,2023039)
作者简介:成立(1975—),男,教授,博士,研究方向为泵站工程。E-mail:chengli@yzu.edu.cn
通信作者:颜红勤(1973—),男,教授级高级工程师,硕士,主要从事泵站工程技术咨询工作。E-mail:1448625167@qq.com
更新日期/Last Update: 2024-11-15