Study on the effect of the angle of attack of the blade on the rotating stall the impeller of the double-suction centrifugal pump

被引：0

作者：

Wang, Hao ^{[1
]}

Li, Yibin ^{[1
,2
]}

Kong, Yunshan ^{[1
]}

Jing, Weimin ^{[1
]}

Yang, Congxin ^{[1
,2
]}

机构：

[1] School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou

[2] Innovation Research Center for Advanced Equipment of Nuclear Class Pumps, Lanzhou University of Technology, Lanzhou

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2024年 / 45卷 / 10期

关键词：

double-suction centrifugal pump; internal flow; normalized helicity; pressure pulsation; rotating stall; standard deviation; the angle of attack; turbulence number;

D O I：

10.11990/jheu.202210006

中图分类号：

学科分类号：

摘要：

In order to study the rotating stall at the impeller of double-suction centrifugal pump under low-flow conditions, under which a certain type of double-suction centrifugal pump was calculated by the means of shear stress transport (SST), the paper analyzes the influence of different inlet angles of blade on hydraulic performance, internal flow field and pressure pulsation in the impeller. The results show that the small angle of attack scheme at the blade inlet can effectively suppress the impeller rotation stall, and the design point head and efficiency are increased by 6. 4% and 5. 7% respectively. When the average turbulence degree is higher than 2%, the rotating stall occurs in the impeller. Using the normalized helicity, it is determined that the vortex direction of the stall vortex is consistent with the impeller steering, but the spread direction is opposite to the impeller steering. Due to the action of the stall vortex, the blade loading near the blade inlet edge fluctuates greatly, and the maximum is around 0. 6 MPa. The standard deviation of the impeller pressure pulsation which of the blades with the large attack angle scheme was always larger than that of the blades with the small attack angle scheme, was analyzed. The research results can provide some theoretical support for stall research and hydraulic performance optimization of double-suction pump. © 2024 Editorial Board of Journal of Harbin Engineering. All rights reserved.

引用

页码：1965 / 1973

页数：8

共 26 条

[1]

GUAN Xingfan, Modern pump theory and design, (2011)

[2]

GULICH J F., Centrifugal pumps, (2014)

[3]

LANG Tao, LIU Yutao, CHEN Keqiang, Et al., Review on hydrodynamic noise of centrifugal pump, Journal of drainage and irrigation machinery engineering, 39, 1, pp. 8-15, (2021)

[4]

TONG Zheming, XIN Jiage, TONG Shuiguang, Et al., Internal flow structure, fault detection, and performance optimization of centrifugal pumps, Journal of Zhejiang University-Science A, 21, 2, pp. 85-117, (2020)

[5]

YANG Hesen, ZHAO Guangyin, LIANG Hua, Et al., Research progress on influencing factors and flow control of airfoil dynamic stall, Acta aeronautica et astronautica sinica, 41, 8, (2020)

[6]

WU Liming, JIANG Yixin, LIU Xiaomin, Et al., Numerical analysis of dynamic stall characteristics of several bionic airfoils, Journal of Xi′an Jiaotong University, 56, 9, pp. 1-9, (2022)

[7]

YANG Jun, YUAN Shouqi, PEI Ji, Et al., Research progress on internal rotating stall of centrifugal pump with guide vanes, Journal of drainage and irrigation machinery engineering, 33, 5, pp. 369-373, (2015)

[8]

ZHANG Lei, WANG Songling, HU Chenxing, Research progress on rotating stall of turbomachinery, Thermal power generation, 43, 1, pp. 1-5, (2014)

[9]

PAN Zhongyong, LI Junjie, LI Hong, Et al., Research progress of rotating stall of vane pump, Fluid machinery, 39, 2, pp. 35-39, (2011)

[10]

WANG Fujun, Methods for flow analysis of pumps and pumping stations, (2020)

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