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Development and Reliability Evaluation of a Ceramic Stator Vane for Industrial Gas Turbines

  • Kimiaki Nakakado
  • Takashi Machida
  • Hiroshi Miyata
  • Tooru Hisamatu
  • Noriyuki Mori
  • Isao Yuri
Chapter

Abstract

A ceramic gas turbine is expected to improve the thermal efficiency of a power plant, especially in a combined cycle. The first stage ceramic stator vane is developed for a 1300°C class, 20-MW industrial gas turbine. There are two main design objectives. One is a structural design to ensure the strength reliability of brittle ceramic parts. The other is a cooling and heat insulating design to reduce the cooling air amount of metal parts. To solve the above problems, these ceramic stator vanes have a hybrid structure, composed of ceramic, metal and heat insulating parts. The strength reliability and cooling properties of the ceramic stator vane are evaluated by a cascade test using combustion gas in actual conditions (1300°C, 1.5 MPa). The results prove that ceramic parts have good strength reliability. Also, 1/20th the amount of cooling air required for air-cooled conventional vanes is required for the ceramic stator vane.

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References

  1. 1.
    Miyata, H, Iijima, S, Ooshima, R, Abe, T, Hisamatsu, T and Hamamatsu, T, Application Technology on Ceramics for Structural Components of HighTemperature Machines, JSME Int. J. Series I,Vol. 32, No.4 (1989) p596Google Scholar
  2. 2.
    Abe, T, Hisamatsu, T, Miyata, H, Iijima, S and Nakakado, K, R&D of Ceramic Stator Vane for High-Temperature Gas Turbine: Part II Experimental Study on Heat resistance and Cooling Characteristics, Proc. 17th Gas Turbine Congress, GTSJ (June 1989) p39 (in Japanese)Google Scholar
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    Ohkoshi, A, Watanabe, N, Tsuji, I, Tsukagoshi, K and Kawai, H, Manufacturing and Hot Rig Testing of Ceramics Vanes for Gas Turbines, Proc. 1987 Tokyo Int. Gas Turbine Congress, GTSJ, (Oct. 1987) p I–169Google Scholar

Copyright information

© Elsevier Science Publishers Ltd and MPA Stuttgart 1992

Authors and Affiliations

  • Kimiaki Nakakado
    • 1
  • Takashi Machida
    • 1
  • Hiroshi Miyata
    • 2
  • Tooru Hisamatu
    • 3
  • Noriyuki Mori
    • 3
  • Isao Yuri
    • 3
  1. 1.Mechanical Engineering Research LaboratoryHitachi, Ltd.Tsuchiura-shi, Ibaraki-ken 300Japan
  2. 2.Hitachi Research LaboratoryHitachi, Ltd.Hitachi-shi, Ibaraki-ken 317Japan
  3. 3.Yokosuka Research LaboratoryCentral Research Institute of Electric Power IndustryYokosuka-shi, Kanagawa-kenJapan

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