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GAS TURBINE SYSTEM

  • US 20190323432A1
  • Filed: 04/05/2019
  • Published: 10/24/2019
  • Est. Priority Date: 04/18/2018
  • Status: Active Grant
First Claim
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1. A gas turbine system, comprising:

  • a turbine includinga rotation shaft configured to rotate around an axis, a rotor blade stage including a plurality of rotor blades which are arranged on an outer circumference of the rotation shaft with intervals in a circumferential direction thereof,a casing surrounding the rotation shaft and the plurality of rotor blades, anda vane stage including a plurality of stator vanes which are fixed to the casing and are arranged with intervals in the circumferential direction; and

    a turbine-cooling system configured to cool the turbine with cooling air,wherein the turbine-cooling system includesa first intra-vane flow passage that is formed in the stator vane so as to penetrate the stator vane in a radial direction of the rotation shaft,a second intra-vane flow passage that is formed in the stator vane so as to penetrate the stator vane in the radial direction,an intra-rotation-shaft flow passage that is formed in the rotation shaft and connects inner ends in the radial direction of the first intra-vane flow passage and the second intra-vane flow passage, andan extra-turbine flow passage connecting an outer end in the radial direction of the first intra-vane flow passage and an outer end in the radial direction of the second intra-vane flow passage.

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