Investigation into the head characteristic of a sectional low-speed centrifugal pump stage

1975 ◽  
Vol 11 (5) ◽  
pp. 425-427
Author(s):  
V. A. Golovin ◽  
V. V. Malyushenko
Keyword(s):  
Centrifugal Pump ◽  
Low Speed ◽  
Head Characteristic ◽  
Pump Stage

scholarly journals Development and research of a borehole centrifugal pump stage

2020 ◽  
Vol 779 ◽  
pp. 012055
Author(s):  
V Cheremushkin ◽  
V Lomakin ◽  
N Kalin ◽  
A Trulev
Keyword(s):  
Centrifugal Pump ◽  
Pump Stage

scholarly journals Research on Centrifugal Pump with Low Speed Inducer

1978 ◽  
Vol 44 (378) ◽  
pp. 588-597 ◽  
Author(s):  
Hideo OHASHI ◽  
Norihiro YOSHIKAWA ◽  
Masuji MATSUMURA ◽  
Yukio KATSUMATA
Keyword(s):  
Centrifugal Pump ◽  
Low Speed

Test results for a low-speed centrifugal pump

1995 ◽  
Vol 31 (4) ◽  
pp. 189-192
Author(s):  
N. S. Yalovoi ◽  
A. M. Kats
Keyword(s):  
Centrifugal Pump ◽  
Test Results ◽  
Low Speed

Investigation of a Centrifugal Pump Stage With Radial Impeller and a Pump Stage With Small Stage Diameter

2006 ◽  
Author(s):  
Andreas Weiten ◽  
Dieter-H. Hellmann
Keyword(s):  
Centrifugal Pump ◽  
Dynamic Performance ◽  
Axial Direction ◽  
Outer Diameter ◽  
Centrifugal Pumps ◽  
Axial Thrust ◽  
Vaned Diffuser ◽  
Pump Stage ◽  
Radial Pump ◽  
Inner Diameter

For radial multistage centrifugal pumps a combination of a radial exiting impeller, a vaned diffuser and a row of return guide vanes is used for each stage of the pump. Hence the inner diameter of the stage casing is much larger than the diameter of the impeller. In case when the space for installing the pump is limited, for example in case of submersible pumps, a high number of pump stages is necessary to produce a sufficient hydraulic head. Pump stages with an impeller diameter equal to the inner diameter of the casing can reduce the number of the stages, but up to now the efficiency of such pumps is lower than the one of a conventional pump. Improving the design of these pumps in order to increase efficiency, stationary diffusers were developed at the Institute for Turbomachinery and Fluid mechanics at TU Kaiserslautern. While the pump liquid cannot exit the impeller in radial direction, the hub diameter is reduced by the width of the impeller at the outer diameter. Hence the pump liquid now exits the impeller in axial direction. This design affects both the hydraulic and the rotor dynamic performance of the pump. Furthermore the axial thrust has dropped, because the flow and the allocation of static pressure in the impeller side spaces has changes compared to radial pump stages. In this paper results of measurements of vibration and axial thrust at radial centrifugal pump with four stages are compared with these of a four stage pump with small stage diameter. Furthermore the hydraulic datas of both designs a presented.

scholarly journals Particle Distribution and Motion in Six-Stage Centrifugal Pump by Means of Slurry Experiment and CFD-DEM Simulation

2021 ◽  
Vol 9 (7) ◽  
pp. 716
Author(s):  
Liwen Deng ◽  
Qiong Hu ◽  
Jun Chen ◽  
Yajuan Kang ◽  
Shaojun Liu
Keyword(s):  
Centrifugal Pump ◽  
Simulation Method ◽  
Test Site ◽  
Centrifugal Pumps ◽  
Mining System ◽  
Transport Characteristic ◽  
Dem Simulation ◽  
Multi Stage ◽  
Pump Stage ◽  
Slurry Transport

Six-stage centrifugal pumps are used in deep-sea mining lifting systems and are required to convey slurry containing coarse particles. A six-stage centrifugal pump suitable for operation in a natural mining system was manufactured. High-flow and full-scaled slurry conveying experiments at a 5% and 9% volume concentration of particles was carried out at a large modified test site with artificial nodules. CFD-DEM simulations were carried out to obtain slurry transport characteristic curves, particle transport and distribution characteristics, where the simulation method was validated by the experiment data. A clarified two-stage pump can be used instead of a multi-stage pump for simplified simulation calculations with acceptable accuracy. Local agglomeration of particles caused by backflow was found at the outlet of the diffuser, and such agglomeration decreased with increasing flow rates. It was found that particles are transported non-uniformly, particles transport in diffusers in strands. Particles are transported in a pulse-like mode within the pump, with the latter stage showing similar particle characteristics to those transported in the previous pump stage.

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