旋涡泵定常流动特征及外特性分析
Analysis of Steady Flow Characteristics and External Characteristics of Vortex Pump
陆胜 1李玉婷 1吴娟 1孙顾航 1尤保健1
作者信息
- 1. 上海凯泉泵业(集团)有限公司,上海 201800
- 折叠
摘要
旋涡泵具有高扬程、扬程曲线陡降等典型的外特性以及易于加工的结构特征,因而被广泛用于化工、医药等行业.为了探究旋涡泵内部复杂流动特性以及对其外特性分析,采用标准k-e两方程模型对旋涡泵全流道全流量工况进行了数值模拟分析.结果表明:该旋涡泵最高效率约为35％,且外特性曲线中扬程具有陡降特征;内流场分析发现,压力分布均匀并呈现一定的压力梯度,叶轮流道内有明显的环流运动,存在明显的纵向、径向旋涡;大流量工况下,当环流区域长度约为叶轮周向2/3长度时,为旋涡泵工作的最优工况.
Abstract
Vortex pump has typical external characteristics such as high head,steep drop in head curve and a struc-tural feature that is easy to process,making it widely used in industries such as chemical and pharmaceutical in-dustries.In order to investigate the complex internal flow characteristics of the vortex pump and analyze its exter-nal characteristics,a standard k-e two-equation model is adopted for numerical simulation of the full flow path and full flow rate operating conditions of the vortex pump.The results show that the external characteristic curve indi-cates that the vortex pump has a maximum efficiency of about 35％and the head has a steep drop feature.The a-nalysis of the internal flow field reveals that the pressure distribution characteristics are uniform and present a cer-tain pressure gradient,and there is obvious circulating motion in the impeller flow passage.Under high flow rate conditions,the length of the circulating area is approximately 2/3 of the peripheral length of the impeller,which represents the optimal operating condition for the vortex pump.
关键词
旋涡泵/环流/内流分析/外特性Key words
vortex pump/circulation/internal flow analysis/external characteristics引用本文复制引用
出版年
2024
NETL
NSTL
万方数据