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:
Mar. 08, 2004
Shinya Marushima, Hitachinaka, JP;
Shunichi Anzai, Hitachi, JP;
Masami Noda, Hitachinaka, JP;
Manabu Matsumoto, Ibaraki-machi, JP;
Nobuaki Kizuka, Hitachinaka, JP;
Tsuyoshi Takano, Hitachi, JP;
Shinya Marushima, Hitachinaka, JP;
Shunichi Anzai, Hitachi, JP;
Masami Noda, Hitachinaka, JP;
Manabu Matsumoto, Ibaraki-machi, JP;
Nobuaki Kizuka, Hitachinaka, JP;
Tsuyoshi Takano, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a closed circuit moving blade cooled turbine, holes in the radial direction formed in the outer periphery of a second stage wheel are led to cooling air supply holes to second stage moving blades. The holes in the radial direction and the cooling air supply holes are interconnected and supply members covering the connections are installed. The cooling air after cooling the second stage moving blades is introduced into collection holes formed in the outer periphery of the spacer via the cooling air collection holes. The cooling air collection holes and collection holes are interconnected and collection members covering the connection are installed. To make the sum of minimum sectional areas of the respective paths of the second stage moving blades, smaller than the sum of minimum sectional areas of thee respective path of the first stage moving blades, a minimum sectional member is incorporated into the supply member.