Browse > Article
http://dx.doi.org/10.3795/KSME-B.2016.40.11.727

Study on the Radial Diffuser of Multistage High Pressure Pump  

Kim, Deok Su (Research and Development 2Team, Hyosung Goodsprings, Inc.)
Mamatov, Sanjar (Research and Development 2Team, Hyosung Goodsprings, Inc.)
Park, Warn Gyu (School of Mechanical Engineering, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.11, 2016 , pp. 727-736 More about this Journal
Abstract
In this study, a high-pressure multistage pump used in the combined cycle power plants is analyzed. The pump performance characteristics (differential head and efficiency) are numerically analyzed for different shapes of the radial diffuser. The design variables selected for the radial diffuser are, number of vanes, diameter ratio ($D_4/D_3$), return channel outlet angle(${\alpha}_6$), and pressure recovery factor ($C_p$). The numerical analysis results showed that the differential head and efficiency are the highest when the diameter ratio is the highest. Further, it was observed that the differential head was lower when the return channel outlet angle was $60^{\circ}$ than when it was $90^{\circ}$, because of pre-swirl at the diffuser outlet.
Keywords
High Pressure Multistage Pump; Impeller; Radial Diffuser; Return-Channel; BFP; CFD;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Yoo, I. S., Park, M. R., Hwang, S. C., Kim, S. K. and Yoon, E. S., 2012, "Development of Vertical Barrel Type Multistage Pump," Journal of Fluid Machinery, Vol. 15, No. 1, pp. 13-20.   DOI
2 Oh, H. W., "Hydrodynamic Characteristics of Vaned-Diffuser and Return-Channel for a Multistage Centrifugal Pump," Journal of Fluid Machinery, Vol. 14, No. 6, pp. 54-60.
3 Miyano, T. K., 2008, "Return Vane Installed Multistage Centrifugal Pump," International Journal of Fluid Machinery and Systems, Vol. 1, No. 1.
4 Roclawski, H., 2006, "Numerical Simulation of a Radial Multistage Centrifugal Pump," American Institute of Aeronautics and Astronautics.
5 Roche-Carrier, N. L., Ngoma, G. D. and Ghiei, W., 2013, "Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes and Casing," Hindawi Publishing Corporation ISRN Mechanical Engineering, Article ID 578072.
6 Tiwari, N., Kumar, K. and Kumar, D., 2016, "Analytical and Experimental Analysis of the High Pressure Boiler Feed Pump," International Conference on Innovations in Automation and Mechatronics Engineering.
7 Gulich, J. F., 2010, "Centrifugal Pumps".