Title:
TURBINE BLADE AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2019/009331
Kind Code:
A1
Abstract:
This turbine blade comprises: a blade part; a cooling passage that extends along a blade height direction on the inside of the blade part; a plurality of cooling holes that are formed in a trailing edge part of the blade part so that the cooling holes are arranged along the blade height direction, and that communicate with the cooling passage and open on a surface of the blade part in the trailing edge part. When an index that indicates an opening density of the cooling holes in a center region including an intermediate position between a first end and a second end of the blade part in the blade height direction is d_mid, the index in a region positioned more toward the upstream side of a cooling medium flow within the cooling passage than the center region in the blade height direction is d_up, and the index in a region positioned more toward the downstream side of the cooling medium flow than the center region in the blade height direction is d_down, the relationship d_up < d_mid < d_down is satisfied.
Inventors:
TSUJI YOSHIFUMI (JP)
ITO RYUTA (JP)
OTOMO HIROYUKI (JP)
HADA SATOSHI (JP)
WAKAZONO SUSUMU (JP)
ITO RYUTA (JP)
OTOMO HIROYUKI (JP)
HADA SATOSHI (JP)
WAKAZONO SUSUMU (JP)
Application Number:
PCT/JP2018/025385
Publication Date:
January 10, 2019
Filing Date:
July 04, 2018
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F01D5/18; F01D9/02; F01D25/12; F02C7/18
Foreign References:
| US20080273988A1 | 2008-11-06 | |||
| US8807943B1 | 2014-08-19 | |||
| US9447692B1 | 2016-09-20 | |||
| US20070031252A1 | 2007-02-08 |
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
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