Title:
TURBINE BLADE, METHOD OF MANUFACTURING TURBINE BLADE, AND AXIAL-FLOW TURBINE
Document Type and Number:
WIPO Patent Application WO/2017/025995
Kind Code:
A1
Abstract:
A turbine blade (120), a plurality of which are arranged in a row in an annular flow path in an axial-flow turbine, is provided with: a dorsal surface (106) which curves in a convex shape; a ventral surface (107) on the opposite side to the dorsal surface; a leading edge (108) disposed on the upstream side in the direction of flow of a working fluid; a trailing edge (109) disposed on the downstream side in the direction of flow of the working fluid; a thinned portion (110) which is formed in at least a part of a region including the trailing edge, and the thickness of which is reduced by means of additional processing of the dorsal surface and/or the ventral surface of a turbine blade starting material (120a) manufactured by precision casting; and cooling holes (111) formed in the height direction of the blade, inside the thinned portion.
Inventors:
SEKINE SATORU (JP)
SATO IWATARO (JP)
MAEDA HIDEYUKI (JP)
TSURUTA KAZUTAKA (JP)
SATO IWATARO (JP)
MAEDA HIDEYUKI (JP)
TSURUTA KAZUTAKA (JP)
Application Number:
PCT/JP2015/004029
Publication Date:
February 16, 2017
Filing Date:
August 11, 2015
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
F01D5/14; F01D5/18; F01D5/28; F01D9/02; F01D25/00
Foreign References:
JPS58180304U | 1983-12-02 | |||
JPH09125904A | 1997-05-13 | |||
JP2014088858A | 2014-05-15 | |||
JP2008051104A | 2008-03-06 | |||
JP5661060B2 | 2015-01-28 |
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, P.C. (JP)
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