The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2006
Filed:
Feb. 23, 2004
Shinya Marushima, Hitachinaka, JP;
Manabu Matsumoto, Ibaraki-machi, JP;
Kazuhiko Kawaike, Hitachinaka, JP;
Takashi Ikeguchi, Hitachi, JP;
Takashi Machida, Tsuchiura, JP;
Masaru Sekihara, Chiyoda-machi, JP;
Shinya Marushima, Hitachinaka, JP;
Manabu Matsumoto, Ibaraki-machi, JP;
Kazuhiko Kawaike, Hitachinaka, JP;
Takashi Ikeguchi, Hitachi, JP;
Takashi Machida, Tsuchiura, JP;
Masaru Sekihara, Chiyoda-machi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
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.