Title:
TURBINE STATOR VANE, GAS TURBINE, AND METHOD FOR MANUFACTURING TURBINE STATOR VANE
Document Type and Number:
WIPO Patent Application WO/2020/235245
Kind Code:
A1
Abstract:
This turbine stator vane is provided with: an airfoil portion; a shroud provided on at least one of a distal end portion side and a base end portion side of the airfoil portion; and a projecting portion which projects toward the side opposite to the airfoil portion across a gas path surface. The shroud includes: a perimetrical direction passage disposed on the trailing edge side and extending in the perimetrical direction; and a plurality of trailing edge end portion passages which are arranged in the perimetrical direction on the trailing edge side, a first end portion of which is connected to the perimetrical direction passage, and a second end portion of which opens in a trailing edge end surface of the shroud. The perimetrical direction passage includes an inclined passage which, when seen in a perimetrical direction cross section, has a third end portion that is in close proximity to the gas path surface and projects to the leading edge side, has a fourth end portion formed on the trailing edge side of the third end portion, and has an opening portion that is closed by a lid portion, in a trailing edge side end surface of the projecting portion. The axial direction position of the first end portion where the trailing edge end portion passage is connected to the perimetrical direction passage is disposed on the leading edge side of the position of the trailing edge side end surface of the projecting portion, in the position in which the projecting portion is connected to the shroud.
Inventors:
HADA SATOSHI (JP)
OKAJIMA YOSHIFUMI (JP)
WAKI KUNIHIKO (JP)
OKAJIMA YOSHIFUMI (JP)
WAKI KUNIHIKO (JP)
Application Number:
PCT/JP2020/015829
Publication Date:
November 26, 2020
Filing Date:
April 08, 2020
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F01D9/02; F01D9/04; F02C7/18
Domestic Patent References:
| WO2016002602A1 | 2016-01-07 |
Foreign References:
| JP2017160892A | 2017-09-14 | |||
| US20130064680A1 | 2013-03-14 | |||
| JP2018128017A | 2018-08-16 | |||
| JP2012107620A | 2012-06-07 | |||
| US20150192020A1 | 2015-07-09 | |||
| JP2016011649A | 2016-01-21 |
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
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