Title:
TURBINE ROTOR BLADE AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2016/080136
Kind Code:
A1
Abstract:
This turbine rotor blade (26) used for a turbine is provided with: an airfoil section (30) which has an airfoil shape formed by a ventral surface (31) and a dorsal surface (32); and one or more squealer ribs (40, 42, 44) which are disposed on the tip surface (35) of the turbine rotor blade and extend from a leading edge side (33) toward a tailing edge side (34). The turbine rotor blade is constructed such that at least one of the squealer ribs (42) has a ridge (43) continuing in the extending direction of the squealer rib, the gap (100) between a casing inner wall surface (23) of the turbine facing the tip surface and the tip surface has a local minimum over the ridge, and the gap is larger than the local minimum on both sides of the ridge in the width direction of the squealer rib.
Inventors:
NISHIMURA KAZUYA (JP)
FUJIMURA DAIGO (JP)
ITO EISAKU (JP)
ISHIZAKA KOICHI (JP)
FUJIMURA DAIGO (JP)
ITO EISAKU (JP)
ISHIZAKA KOICHI (JP)
Application Number:
PCT/JP2015/079555
Publication Date:
May 26, 2016
Filing Date:
October 20, 2015
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D5/20; F01D11/12; F02C7/28
Domestic Patent References:
| WO2014099814A1 | 2014-06-26 |
Foreign References:
| JPS62186004A | 1987-08-14 | |||
| JP2004169694A | 2004-06-17 | |||
| JP2011513638A | 2011-04-28 | |||
| JP2000297603A | 2000-10-24 | |||
| US7494319B1 | 2009-02-24 | |||
| GB1107024A | 1968-03-20 | |||
| FR370215A | 1907-02-01 | |||
| US20140047842A1 | 2014-02-20 |
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P. C. (JP)
誠真 IP patent business corporation (JP)
誠真 IP patent business corporation (JP)
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