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. 25, 2017
Filed:
Sep. 19, 2012
Applicant:
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Inventor:
Takashi Yokoyama, Tokyo, JP;
Assignee:
Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/18 (2006.01);
U.S. Cl.
CPC ...
F01D 5/186 (2013.01); F05D 2240/303 (2013.01);
Abstract
A gas turbine blade having a film cooling structure can reduce stress and strain that occur around the cooling holes of the film cooling structure. For example, in the gas turbine blade, a plurality of cooling holes thoroughly connected to the cooling pass formed inside the gas turbine blade are arranged in the span direction in the leading edge portion of the gas turbine blade, and the direction of the longitudinal axis of the cooling holes is made identical to the direction of principal strain occurring in the leading edge portion of the turbine blade within a range of 15 degrees.