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:
Oct. 02, 2012
Filed:
Dec. 13, 2007
Katsuya Yamashita, Tokyo, JP;
Takao Inukai, Kawasaki, JP;
Katsuya Yamashita, Tokyo, JP;
Takao Inukai, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A turbine rotorincludes: a high-temperature turbine rotor constituent partwhere high-temperature steam passes; low-temperature turbine rotor constituent partssandwiching and weld-connected to the high-temperature turbine rotor constituent partand made of a material different from a material of the high-temperature turbine rotor constituent part; and a cooling part cooling the high-temperature turbine rotor constituent partby ejecting cooling steamto a position, of the high-temperature turbine rotor constituent part, near a welded portionbetween the high-temperature turbine rotor constituent partand the low-temperature turbine rotor constituent part. A value equal to a distance divided by a diameter is equal to or more than 0.3, where the distance is a distance from the position, of the high-temperature turbine rotor constituent part, ejected the cooling steamup to the welded portion, and the diameter is a turbine rotor diameter of the high-temperature turbine rotor constituent part