Title:
TURBINE BLADE AND METHOD FOR MANUFACTURING TURBINE BLADE
Document Type and Number:
WIPO Patent Application WO/2021/193628
Kind Code:
A1
Abstract:
A turbine blade comprising an airfoil part including a front edge, a rear edge, and a pressure surface and a negative pressure surface extending therebetween. A cooling path is formed inside the airfoil part. The cooling path includes: a first cooling path located at a position closer to the pressure surface than to the negative pressure surface; a second cooling path located at a position closer to the negative pressure surface than to the pressure surface; and a plurality of outflow paths opening at one end to a junction part and opening at the other end to the rear edge, the junction part being configured by connecting the rear end of the first cooling path to the rear end of the second cooling path. The first cooling path and the second cooling path are separated by a partition member provided inside the airfoil part. The cooling path is provided with, only on a front edge side extending from the rear end of the partition member: a plurality of pressure surface side pin fins located in the first cooling path, connected at one end to a pressure surface side wall including the pressure surface, and connected at the other end to the partition member; and a plurality of negative pressure surface side pin fins located in the second cooing path, connected at one end to a surface side wall including the negative pressure surface, and connected at the other end to the partition member.
Inventors:
MIZUKAMI SATOSHI (JP)
KUWABARA MASAMITSU (JP)
HADA SATOSHI (JP)
MATSUO SAKI (JP)
UEMURA YOSHITAKA (JP)
TAMURA RYOZO (JP)
KUNISADA YASUMASA (JP)
KUWABARA MASAMITSU (JP)
HADA SATOSHI (JP)
MATSUO SAKI (JP)
UEMURA YOSHITAKA (JP)
TAMURA RYOZO (JP)
KUNISADA YASUMASA (JP)
Application Number:
PCT/JP2021/011983
Publication Date:
September 30, 2021
Filing Date:
March 23, 2021
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
International Classes:
F01D9/02; F01D5/18
Foreign References:
| JPS58197402A | 1983-11-17 | |||
| JPS5277914A | 1977-06-30 | |||
| JPS5023504U | 1975-03-17 | |||
| US20150211376A1 | 2015-07-30 | |||
| JPS4826086B1 | 1973-08-06 | |||
| JP2017089630A | 2017-05-25 | |||
| US20160230593A1 | 2016-08-11 |
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
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