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History of Development and Refinement of Gas-Static Bearings for Metal-Ceramic Gas Generator of 2.5 MW Power

[+] Author Affiliations
A. V. Soudarev, V. Ya. Podgorets, A. A. Souryaninov, A. S. Molchanov

Joint-Stock Company – TEDVIC, St. Petersburg, Russia

Paper No. GT2002-30545, pp. 1061-1066; 6 pages
doi:10.1115/GT2002-30545
From:
  • ASME Turbo Expo 2002: Power for Land, Sea, and Air
  • Volume 1: Turbo Expo 2002
  • Amsterdam, The Netherlands, June 3–6, 2002
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3606-1 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

Since 1990, by the order of the Joint-Stock Company “GAZPROM” the Research-Engineering Center “Ceramic Heat Engines” has been involved in the development of the stationary ceramic gas-turbine engine (CGTE) of 2.5 MW, efficiency 42% which is notably in excess of the characteristics of the serial-production engines of the similar power. Alongside the application of the ceramic materials, a goal to increase the fire and explosion safety of CGTE through use of journal and thrust oil beatings was set up. The refinement of the embodied design of the CGTE gas-static bearings was carried out on specially designed test beds, initially on simplified and then on baseline test beds. On all stages, the rotors were “rigid”, the balancing accuracy ensured the residual imbalance not exceeding 5–7 g*mm, the air cleaning provided the moisture separation of at least 90% with the filtration being not worse than 80μm. The tests were carried out by two stages: initially the journal beatings without the axial load applied and then the thrust bearing component with variation of the axial load within the 0.2 ≤ Presi /Pbase ≤ 1.2 were developed. The maximum speed was 30,000 rpm (noper = 23,000–24,000 rpm). Thus, the performed complex of the computation-experimental operations allowed the development of the gas-static thrust-journal beatings for the 250 N mass CGTE rotor.

Copyright © 2002 by ASME

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