Title:
TURBINE STATOR VANE AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2023/282078
Kind Code:
A1
Abstract:
A turbine stator vane comprising: a vane body; a shroud formed at an end of the vane body in a vane height direction; a fillet portion joining the vane body and the shroud; and a plurality of cooling holes in a bottom plate contacting a combustion gas flow path. The plurality of cooling holes connect to entry openings and downstream exit openings formed in the bottom plate. The entry openings and the exit openings are connected by cooling hole center lines having the same inclination with respect to an axial direction. The plurality of cooling holes constitute a set of cooling hole rows in which a linear first opening center line connecting the centers of the exit openings and a linear second opening center line connecting the centers of the entry openings are formed parallel to each other. A plurality of rows of the cooling holes are arranged along a vane surface from the axially upstream side toward the downstream side, with the inclination of the cooling hole center lines of the cooling holes of the plurality of cooling hole rows becoming smaller toward the axially downstream side.
Inventors:
MORIKAWA TOMOKO (JP)
HADA SATOSHI (JP)
HADA SATOSHI (JP)
Application Number:
PCT/JP2022/025110
Publication Date:
January 12, 2023
Filing Date:
June 23, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI POWER LTD (JP)
MITSUBISHI POWER LTD (JP)
International Classes:
F01D9/02
Foreign References:
| JP2018096376A | 2018-06-21 | |||
| JP2008286157A | 2008-11-27 | |||
| JP2018091227A | 2018-06-14 | |||
| US20120034075A1 | 2012-02-09 |
Attorney, Agent or Firm:
SSIP PATENT ATTORNEY CORPORATION (JP)
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