Title:
TURBINE ROTOR BLADE AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2019/189355
Kind Code:
A1
Abstract:
A second outer surface (49ab) of a top plate (49) is recessed from a first outer surface (49aa) of the top plate (49) in the direction away from the inner peripheral surface (34a) of a turbine casing (34) so that a step (50) is formed between the second outer surface (49ab) and the first outer surface (49aa). At least part of the discharge opening (53B) of a cooling hole (53) is disposed in the second outer surface (49ab). The cooling hole (53) extends so as to be tilted relative to the second outer surface (49ab) so that the cooling hole (53) discharges a cooling medium to the upstream side of a combustion gas flowing between the second outer surface (49ab) and the inner peripheral surface (34a) of the turbine casing (34).
Inventors:
ITO RYUTA (JP)
IIDA KOICHIRO (JP)
IIDA KOICHIRO (JP)
Application Number:
PCT/JP2019/013176
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D5/20; F01D5/18; F02C7/28
Domestic Patent References:
| WO2017056997A1 | 2017-04-06 |
Foreign References:
| US5476364A | 1995-12-19 | |||
| JP2012154201A | 2012-08-16 | |||
| JP2007154894A | 2007-06-21 | |||
| US8075268B1 | 2011-12-13 | |||
| JP2014533794A | 2014-12-15 | |||
| US20060257257A1 | 2006-11-16 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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