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Lubricants 2017, 5(4), 48; https://doi.org/10.3390/lubricants5040048

Field Tests on Hydrodynamic and Hybrid Operation of a Bidirectional Thrust Bearing of a Pump-Turbine

Faculty of Mechanical Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland
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Received: 31 October 2017 / Revised: 5 December 2017 / Accepted: 14 December 2017 / Published: 15 December 2017
(This article belongs to the Special Issue Friction and Lubrication of Sliding Bearings)
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Abstract

In vertical shaft pump turbines operating in pumped storage power plants an important role is played by a thrust bearing. Due to the bidirectional character of operation, thrust bearing tilting pads have to be supported symmetrically, which is known to be unfavourable from the point of view of their performance. Large thrust bearings have to be carefully designed so as to minimise excessive thermo-elastic pad deformations. The research into fluid film thrust bearings has been quite extensive over the years, comprising theoretical studies of bearing properties with the use of more and more sophisticated calculation codes. On the other hand, the availability of experimental field data on bearing operation is limited, for obvious reasons. In this paper the authors present part of the results of extensive field tests of a large bearing of a pump-turbine they have conducted in a pumped storage power plant. Hopefully this data will be of interest to other researchers to compare theoretical predictions to measurement data. View Full-Text
Keywords: pumped storage power plant; reversible machines; bidirectional thrust bearing; transient conditions; field tests pumped storage power plant; reversible machines; bidirectional thrust bearing; transient conditions; field tests
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wasilczuk, M.; Wodtke, M.; Dąbrowski, L. Field Tests on Hydrodynamic and Hybrid Operation of a Bidirectional Thrust Bearing of a Pump-Turbine. Lubricants 2017, 5, 48.

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