Effects of incident angle of sealing ring clearance on internal flow and cavitation of centrifugal pump

叶轮 入口 空化 离心泵 机械 回流 轴流泵 滑移系数 材料科学 旋转动力泵 螺杆泵 比转速 往复泵 机械工程 物理 工程类 变量泵
作者
Xiaoqi Jia,Yifan Yu,Bo Li,FeiCan Wang,Zuchao Zhu
出处
期刊:Proceedings Of The Institution Of Mechanical Engineers, Part E: Journal Of Process Mechanical Engineering [SAGE Publishing]
卷期号:238 (6): 2867-2882 被引量:4
标识
DOI:10.1177/09544089231169617
摘要

High-energy fluid at the outlet of the impeller might get access to the impeller inlet via the sealing ring clearance of the centrifugal pump with shrouded impeller. In this case, the great velocity and energy differences between the fluid at the inlet and outlet of the impeller might trigger unsteady flows during the collision with large energy loss produced. As a result, the flow status of the impeller inlet can be exacerbated; causing that the centrifugal pump is susceptible to cavitation. A centrifugal pump with a low specific speed was studied in this paper. To begin with, five incident angles, that is the original angle (90°), 75°, 60°, 45°, and 30° were formed between the incident section of the sealing ring clearance and the inlet circumference of the impeller through changing the front cover of the impeller and the outer contour of the centrifugal pump. Then, the accuracy of the calculation results of the prototype pump (90°) was verified experimentally with analyses on the entropy generation, velocity streamline, backflow at the inlet section, internal entropy generation distribution of the centrifugal pump, and distribution of cavitation in specific conditions at the incidence of clearance of the centrifugal pump with different incident angles of sealing ring clearance. As can be seen from the results, changing the incident angle of the sealing ring clearance exerts a certain influence on the external characteristics of the centrifugal pump. To be specific, the sealing ring clearance with a small incident angle can lower the flow loss in the front cavity flow area and the impeller flow area of the centrifugal pump as well as can restrain the backflow prewhirl at the inlet section of the centrifugal pump and the cavitation inside the centrifugal pump.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
迅速凝竹完成签到 ,获得积分10
2秒前
妮妮完成签到,获得积分10
3秒前
3秒前
哈哈哈完成签到,获得积分20
4秒前
快乐随心完成签到 ,获得积分10
5秒前
了一李完成签到 ,获得积分10
5秒前
fqk完成签到,获得积分10
5秒前
活泼新儿完成签到,获得积分10
5秒前
6秒前
老迟到的羊完成签到 ,获得积分10
6秒前
可爱的函函应助sl采纳,获得30
10秒前
CatC完成签到,获得积分10
10秒前
LIKO完成签到,获得积分10
10秒前
10秒前
10秒前
David发布了新的文献求助10
11秒前
11秒前
clock完成签到 ,获得积分10
11秒前
风中小懒虫完成签到,获得积分10
12秒前
cindy完成签到 ,获得积分10
13秒前
Tysonqu完成签到,获得积分10
13秒前
科研通AI2S应助Promise采纳,获得10
14秒前
15秒前
淡淡阁完成签到 ,获得积分10
15秒前
念念发布了新的文献求助10
15秒前
漂亮的秋天完成签到 ,获得积分10
17秒前
David完成签到,获得积分10
17秒前
Jason完成签到,获得积分10
17秒前
21秒前
22秒前
22秒前
YY完成签到,获得积分10
23秒前
调皮的凝旋完成签到,获得积分10
24秒前
24秒前
念念完成签到,获得积分20
25秒前
崔悦欣完成签到,获得积分10
27秒前
xiaosui完成签到 ,获得积分10
27秒前
夏初水莲洁完成签到,获得积分10
28秒前
Jasper应助小王采纳,获得10
28秒前
ZXH完成签到,获得积分10
29秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
Research on Disturbance Rejection Control Algorithm for Aerial Operation Robots 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038388
求助须知:如何正确求助?哪些是违规求助? 3576106
关于积分的说明 11374447
捐赠科研通 3305798
什么是DOI,文献DOI怎么找? 1819322
邀请新用户注册赠送积分活动 892672
科研通“疑难数据库(出版商)”最低求助积分说明 815029