한국유체기계학회 논문집 (The KSFM Journal of Fluid Machinery)

한국유체기계학회 (Korean Society for Fluid machinery)
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원심펌프의 축추력 제어법에 관한 연구

A Method of Axial Thrust Control in Centrifugal Pump

  • 발행 : 2007.08.01
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초록

In order to control and balance axial thrust of turbo machine, many types of balancing devices are used but most of them are complicated and sometimes cause troubles. In this study, a very simple device of using shallow grooves mounted on a casing wall, known as "J-Groove", is proposed and studied experimentally and theoretically. The result shows that 70% of axial thrust in an industrial 4-stage centrifugal pump can be reduced at the best efficiency point. Moreover, the analytical method of "interfered gap flow" is established and a simple formula which can determine the optimum dimension of groove and its location is proposed.

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참고문헌

  1. Kurokawa, J., Kamijo, K. and Shimura, T., 1994, 'Axial Thrust Behavior in LOX-Pump of Rocket Engine,' AIAA, J. Propuls. Power, Vol. 10, pp. 244-250 https://doi.org/10.2514/3.23735
  2. Daily, J. W, Ernst, W. D. and Asbedin, V. V., 1964, 'Enclosed rotating Disk with Superimposed Through-Flow,' MIT Hydro. Lab. Report, No. 64
  3. Kurokawa, J. and Toyokura, H., 1975, 'A Study on the Axial Thrust of Centrifugal Turbomachinery (1st Report, in Japanese),' Trans. JSME, Vol. 41, pp. 1753-1762 https://doi.org/10.1299/kikai1938.41.1753
  4. Kurokawa, J. and Sakuma M., 1988, 'Flow in a Narrow Gap Along an Enclosed Rotating Disk with Through-Flow,' JSME International Journal, Vol. 31, No. 2, pp. 243-251
  5. ANSYS Inc., 2004, 'ANSYS CFX Documentation,' Ver. 5.7.1, Waterloo, Ontario, Canada
  6. Saha, S. L., Kurokawa, J., Matsui, J. and Imamura, H., 2002, 'Suppression of Performance Curve Instability of a Mixed Flow Pump by Use of J-Groove,' ASME J. Fluids Eng., Vol. 124, pp. 592-597