The eddy-eliminating method of guide cone in the closed sump

7th International Conference on Pumps and Fans

机械制造;工业技术

Wang, Y.J.^1 ; Cheng, Li^1 ; Xia, C.Z.^1 ; Zhou, J.R.^1 ; Yan, H.Q.^2 ; Jiang, H.Y.^2

School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou, Jiangsu

225009, China^1

Jiangsu Water Conservancy Engineering and Technology Consulting Co., Ltd., Nanjing, Jiangsu

210029, China^2

关键词: CFD numerical simulations;    Design discharge;    Hydraulic performance;    Pumping efficiency;    Pumping stations;    Stream lines;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/129/1/012009/pdf
DOI  :  10.1088/1757-899X/129/1/012009

学科分类：工业工程学

来源: IOP

【 摘 要 】

In order to explore the effect on eddy-eliminating method of guide cone in the closed sump, the simple factor analysis and CFD numerical simulation are applied to calculate the flow field of closed sump and select ω-shaped back wall. ω-shaped back wall is consistent with the stream line in the suction sump, on this basis, CFD numerical simulation is conducted with the eddy-eliminating of the triangle guide cone and traditional guide cone. The results show that, for eddy-eliminating measures, with the height of triangular guide cone from 0 to 0.407HZ/DL, the excessive triangle guide cone hinder water into the flared pipe. With the width of triangular guide cone from 0.5 to 1.0BZ/DL, increasing width of triangular guide cone may increase the pumping hydraulic performance and pumping efficiency. However with the width of triangular guide cone from 0.5 to 1.0 BZ/DL, too broad traditional guide cone hinder water into the flared pipe. In the design discharge, whether triangle guide cone or traditional guide cone have a little effect on the efficiency of the pumping station. But in terms of the eddy-eliminating on the bottom of suction sump, it is necessary to set up guide cone.