STATIONARY BLADE AND GAS TURBINE PROVIDED WITH SAME

Title:

STATIONARY BLADE AND GAS TURBINE PROVIDED WITH SAME

Document Type and Number:

WIPO Patent Application WO/2017/026314

Kind Code:

A1

Abstract:

A shroud of a stationary blade (50) has formed therein a plurality of circumferential ejection passages (95) that connect with a cavity (69) into which cooling air (Ac) flows and that open on a circumferential end surface (63). Of a central region (91) in the circumferential end surface (63), an upstream-side region (92) in the circumferential end surface (63), and a downstream-side region (93) in the circumferential end surface (63), openings of the plurality of circumferential ejection passages (95) are formed in at least the central region (91). The density, being the number of openings of the circumferential ejection passages (95) per unit length in the axial direction (Da), is highest in the central region (91).

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Inventors:

OTOMO HIROYUKI (JP)
HADA SATOSHI (JP)

Application Number:

PCT/JP2016/072500

Publication Date:

February 16, 2017

Filing Date:

August 01, 2016

Export Citation:

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Assignee:

MITSUBISHI HITACHI POWER SYS (JP)

International Classes:

F01D9/04; F01D11/00; F02C7/18

Domestic Patent References:

WO2011132217A1	2011-10-27
WO2012144242A1	2012-10-26

Foreign References:

JP5606648B1	2014-10-15
JP2004060638A	2004-02-26
US5609466A	1997-03-11

Other References: