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AssigneeHitachi, Ltd.
InventorsShinya Marushima, Manabu Matsumoto, Kazuhiko Kawaike, Takashi Ikeguchi, Takashi Machida, Masaru Sekibara
Estimating the term…
An object is to improve the operational reliability of a gas turbine by suppressing thermal stress and thermal deformation acting on the rotor of the gas turbine. The gas turbine has a rotor shaft constructed by arranging, in an axial direction in turn, a plurality of discs each having a plurality of combustion gas-driven moving blades annularly arranged on the peripheral portion and spacers arranged between the discs, and is characterized in that gap portions are formed between a region, on the rotor shaft center portion side, of the above-mentioned discs facing the spacers and spacers adjacent thereto, contact surfaces are formed both of which contact on both a region, on the rotor peripheral side, of the above-mentioned discs facing the spacers and adjacent spacers thereto, and a third flow path leading fluid to the above-mentioned gap portions is provided.
A gas turbine in which a rotor shaft comprises a plurality of discs each having a plurality of moving blades driven by combustion gas and arranged annularly on the peripheral portion, and spacers arranged between said discs, said respective discs and spacers being arranged in the axial direction in turn, characterized in that
A gas turbine in which a rotor shaft comprises a plurality of discs each having a plurality of moving blades driven by combustion gas and arranged annularly on the peripheral portion, and spacers arranged between said discs, said respective discs and spacers being arranged in the axial direction in turn, and said moving blades are provided with flow paths for introducing coolant for. cooling and discharging the coolant having heated by the combustion gas, characterized in that
Dependencies are inferred from the claim text.