Title:
TURBINE BLADE, TURBINE BLADE PRODUCTION METHOD AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2020/246413
Kind Code:
A1
Abstract:
The present invention provides a turbine blade, a turbine blade production method, and a gas turbine. The turbine blade has a cooling passageway provided along the blade height direction. The cooling passageway has: a first cooling hole having one end opening to the tip side and having the same inner diameter along the blade height direction; and a second cooling hole having one end connected to the other end of the first cooling hole, without any step therebetween, and having an inner diameter that increases towards the base end side thereof. The length from one end of the first cooling hole to the connection position between the first cooling hole and the second cooling hole is 40%–60% of the length from the one end of the first cooling hole to a gas path surface on the base end side.
Inventors:
HATTA MASAYOSHI (JP)
TAKAMURA KEITA (JP)
WAKAZONO SUSUMU (JP)
FUJII TAKASHI (JP)
OTOMO HIROYUKI (JP)
MUKAI YOSUKE (JP)
TAMURA KAZUHISA (JP)
ODA TAKAAKI (JP)
KAWASAKI HIROSHI (JP)
KISHIHARA HIROYUKI (JP)
TAKAMURA KEITA (JP)
WAKAZONO SUSUMU (JP)
FUJII TAKASHI (JP)
OTOMO HIROYUKI (JP)
MUKAI YOSUKE (JP)
TAMURA KAZUHISA (JP)
ODA TAKAAKI (JP)
KAWASAKI HIROSHI (JP)
KISHIHARA HIROYUKI (JP)
Application Number:
PCT/JP2020/021536
Publication Date:
December 10, 2020
Filing Date:
June 01, 2020
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
International Classes:
F01D5/18; B23H9/10; B23H9/14; F01D9/02; F01D25/00; F02C7/00; F02C7/18
Foreign References:
| JP2014114816A | 2014-06-26 | |||
| JP2000297604A | 2000-10-24 | |||
| JPH03182602A | 1991-08-08 | |||
| JPS52189B2 | 1977-01-06 | |||
| US20170274451A1 | 2017-09-28 | |||
| JPS5669423A | 1981-06-10 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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