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Development of Thrust Bearings With High Specific Load

[+] Author Affiliations
Yuki Sumi, Naoto Tochitani, Takashi Nakano

Mitsubishi Heavy Industries, Yokohama, Japan

Takeshi Sano, Tanehiro Shinohara, Yukihiro Otani, Kazuhiko Yamashita

Mitsubishi Heavy Industries, Takasago, Japan

Paper No. GT2014-26798, pp. V01BT27A044; 7 pages
doi:10.1115/GT2014-26798
From:
  • ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
  • Volume 1B: Marine; Microturbines, Turbochargers and Small Turbomachines; Steam Turbines
  • Düsseldorf, Germany, June 16–20, 2014
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4558-5
  • Copyright © 2014 by ASME

abstract

Steam turbine is now facing strict market demands for further improvements in efficiency. To meet such demands, thrust bearing with high specific load makes a huge contribution to improvements in efficiency. Because the smaller thrust dummy diameter of rotor can be adopted and leakage flow through the thrust dummy can be reduced, in case thrust bearing allows higher specific load and allowable thrust force becomes bigger. MHI developed the thrust bearing with high specific load, which PEEK (polyether-ether-ketone) resin pad is applied. Both the laboratory bearing tests and long-time operation (from 2007) in MHI’s internal combined cycle power plant have been successfully accomplished. This PEEK resin thrust bearing is going to be applied to the actual plant. This article describes the performance and characteristics of PEEK resin thrust bearing and summary of laboratory test and long-time operation.

Copyright © 2014 by ASME

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