TURBINE BLADE, GAS TURBINE, INTERMEDIATE PRODUCT OF TURBINE BLADE, AND METHOD OF MANUFACTURING TURBINE BLADE

Title:

TURBINE BLADE, GAS TURBINE, INTERMEDIATE PRODUCT OF TURBINE BLADE, AND METHOD OF MANUFACTURING TURBINE BLADE

Document Type and Number:

WIPO Patent Application WO/2017/078122

Kind Code:

A1

Abstract:

In a turbine blade, a gas turbine, an intermediate product of the turbine blade, and a method of manufacturing the turbine blade according to the present invention, a blade body (51) having hollow shape, cavities (52, 53, 54) provided inside the blade body (51), and a cooling passage (55) which opens from the cavities (52, 53, 54) onto the rear end of the blade body 51 are provided, and the cooling passage (55) includes: a first passage (81) provided on the third cavity (54) side and having a width decreasing in a direction from the third cavity (54) side toward the rear end of the blade body (51); and a second passage (82) provided on the rear end side of the blade main body (51) and having a width constant in the direction from the third cavity (54) side toward the rear end of the blade body (51).

Inventors:

TAKAOKA YOSHIMASA (JP)
TORII SHUNSUKE (JP)
KOYABU HIDEMICHI (JP)
MATSUO SAKI (JP)
TOMITA YASUOKI (JP)
HADA SATOSHI (JP)
OKAJIMA YOSHIFUMI (JP)

Application Number:

PCT/JP2016/082740

Publication Date:

May 11, 2017

Filing Date:

November 04, 2016

Export Citation:

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Assignee:

MITSUBISHI HITACHI POWER SYS (JP)

International Classes:

F01D5/18; F01D9/02; F02C7/00; F02C7/18

Foreign References:

US20010012484A1	2001-08-09
JP2015516539A	2015-06-11
JPS5618002A	1981-02-20
JPH07189602A	1995-07-28
JPH0953405A	1997-02-25

Other References: