Title:
TURBINE BLADE AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2020/189237
Kind Code:
A1
Abstract:
A turbine blade and a gas turbine are provided with: an airfoil portion (41) internally including a cooling air passage (60); a platform (42) provided in a blade base end portion (55) in a blade height direction (Dh) of the airfoil portion (41); and a fillet portion (80) provided around the entire perimeter of a connecting portion of the airfoil portion (41) and the platform (42). The fillet portion (80) includes a first fillet portion (81) which is provided on a rear side blade surface (53) side of the airfoil portion (41), on the trailing edge (52) side of a position at which the distance between the rear side blade surface (53) of the airfoil portion (41) and a rear side edge portion (44) of the platform (42) is shortest, and which has a fillet width (W) that is greater than the fillet width W of other regions of the fillet portion (80).
Inventors:
WAKAZONO SUSUMU (JP)
MIYAHISA YASUO (JP)
HADA SATOSHI (JP)
MIYAHISA YASUO (JP)
HADA SATOSHI (JP)
Application Number:
PCT/JP2020/008670
Publication Date:
September 24, 2020
Filing Date:
March 02, 2020
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F01D5/14; F01D9/02
Foreign References:
| JP2010196625A | 2010-09-09 | |||
| JP2001271603A | 2001-10-05 | |||
| JPS58133403A | 1983-08-09 | |||
| JP2002213205A | 2002-07-31 | |||
| US20130101409A1 | 2013-04-25 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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