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:
Feb. 20, 2024
Filed:
Jun. 01, 2020
Mitsubishi Power Ltd., Kanagawa, JP;
Masayoshi Hatta, Kanagawa, JP;
Keita Takamura, Kanagawa, JP;
Susumu Wakazono, Kanagawa, JP;
Takashi Fujii, Kanagawa, JP;
Hiroyuki Otomo, Kanagawa, JP;
Yosuke Mukai, Tokyo, JP;
Kazuhisa Tamura, Tokyo, JP;
Takaaki Oda, Kanagawa, JP;
Hiroshi Kawasaki, Kanagawa, JP;
Hiroyuki Kishihara, Kanagawa, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
To provide a turbine blade, a manufacturing method for a turbine blade, and a gas turbine. In the turbine blade including a cooling passage provided along a blade height direction, the cooling passage includes: a first cooling hole including one end opening toward a front end, and having an inner diameter that is constant along the blade height direction; and a second cooling hole including one end communicating with the other end of the first cooling hole without a level difference, and having an inner diameter that is increased toward a base end. A length from the one end of the first cooling hole to a position where the first cooling hole and the second cooling hole are communicated with is 40% to 60% of a length from the one end of the first cooling hole to a gas path surface on the base end.