Title:
TURBINE BLADE AND GAS TURBINE
Document Type and Number:
Japanese Patent JP2023165485
Kind Code:
A
Abstract:
To provide a turbine blade and a gas turbine capable of suppressing overcooling of the turbine blade and effectively cooling the turbine blade.SOLUTION: A turbine blade includes a plurality of cooling passages that form a meandering flow passage extending in a blade height direction in a blade body. The plurality of cooling passages include an uppermost stream passage, a lowermost stream passage and at least one intermediate passage provided between the uppermost stream passage and the lowermost stream passage, out of the plurality of the cooling passages. The uppermost stream passage includes: a plurality of first turbulators located on a forefront edge side in a cord direction of the blade body and provided on an inner wall surface of the uppermost stream passage; a plurality of second turbulators provided on an inner wall surface of the intermediate passage; and a plurality of third turbulators provided on an inner wall surface of the lowermost stream passage. An average value of first angles of the plurality of first turbulators relative to a flowing direction of cooling fluid is smaller than an average value of second angles of the second turbulators relative to the flowing direction of the cooling fluid.SELECTED DRAWING: Figure 2
Inventors:
IZUMI YUUSUKE
MIYAHISA YASUO
TORII SHUNSUKE
MIYAHISA YASUO
TORII SHUNSUKE
Application Number:
JP2022076530A
Publication Date:
November 16, 2023
Filing Date:
May 06, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F01D9/02; F01D5/18; F02C7/16
Attorney, Agent or Firm:
SSIP Patent Attorney Corporation