Hydraulic Axial Thrust in Multistage Pumps—Origins and Solutions-Reference-Cited by-同舟云学术

Hydraulic Axial Thrust in Multistage Pumps—Origins and Solutions

Published:2002-05-28 Issue:2 Volume:124 Page:336-341
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Gantar Marjan¹,Florjancic Dusan²,Sirok Brane²

Affiliation:

1. Turboinstitut, Rovsnikova 7, 1210 Ljubljana, Slovenia

2. University of Ljubljana, Faculty for Mechanical Engineering, Askerceva c. 6, 1000 Ljubljana, Slovenia

Abstract

In this paper, axial thrust problems of multistage pumps are presented. The entire investigation has been focused on the pump design concept having all impellers in series (facing in one direction) and is valid for barrel casing type as well as for segmental type. The major part of the investigation has been experimental on one stage testing arrangement, using also Laser Doppler Anemometry (LDA) for determination of fluid rotation in the impeller side chamber. Numerical flow analysis (NFA) has been applied for some flow variants in order to verify whether a numerical approach could simulate the test results. The phenomenon of fluid rotation in side chambers and its effect on impeller hydraulic axial thrust have been determined for different leakage flow regimes. The influence of increased wear ring radial clearance on axial thrust has been analyzed together with the solutions for pump hydraulic axial thrust reduction.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/124/2/336/5678650/336_1.pdf

Reference11 articles.

1. Daily, J. W., and Nece, R. E., 1960, “Chamber Dimension Effects on Induced Flow and Frictional Resistance of Enclosed Rotating Disks,” J. Basic Eng., 83, pp. 217–232.

2. Kurokawa, J., and Toyokura, T., 1972, “Study on Axial Thrust of Radial Flow Turbomachinery,” Proceedings, The Second International JSME Symposium-Fluid Machinery and Fluidics, Tokyo, Japan, pp. 31–40.

3. Iino, T., Sato, H., and Miyashiro, H., 1980, “Hydraulic Axial Thrust in Multistage Centrifugal Pumps,” ASME J. Fluids Eng., 102, pp. 64–69.

4. Thomae, H., and Stucki, R., 1970, “Axial Thrust Occurring in Multistage Radial Pumps,” Sulzer Technical Review.

5. EPRI Report TR-102102, 1993, “Feedpump Operation and Design Guidelines,” Electric Power Research Institute, Palo Alto, CA, pp. 1/35–1/46.

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