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:
Jan. 26, 2010
Filed:
Apr. 06, 2007
Takeo Suga, Yokohama, JP;
Ryuichi Ishii, Tokyo, JP;
Takeo Takahashi, Yokohama, JP;
Masafumi Fukuda, Saitama, JP;
Takeo Suga, Yokohama, JP;
Ryuichi Ishii, Tokyo, JP;
Takeo Takahashi, Yokohama, JP;
Masafumi Fukuda, Saitama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A super steam turbine () into which high-temperature steam of 650° C. or more is introduced is provided with an inner steam pipe () which is disposed through an inner casing () and an outer casing (), an outer steam pipe () which is welded to the outer casing () and disposed outside of the inner steam pipe () along the inner steam pipe () with a prescribed space therebetween, and a radiation heat shielding pipe () which is disposed along the inner steam pipe () between the inner steam pipe () and the outer steam pipe () to face a welded portion of at least the outer steam pipe (), wherein cooling steam () is flown between the inner steam pipe () and the outer steam pipe (), respective component parts are made of a suitable heat-resisting steel having prescribed chemical composition ranges.