ROTOR BLADE SUPPORT STRUCTURE - MITSUBISHI HEAVY IND LTD

Title:

ROTOR BLADE SUPPORT STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2013/058220

Kind Code:

A1

Abstract:

The purpose of the invention is to provide a rotor blade support structure, wherein the concentration of stress near the rotor blade groove in which the rotor blade is embedded is limited even as increase in production cost is limited. A rotor blade support structure, in which rotor blades (30) are embedded in rotor blade grooves (10) provided on a rotor disc (1), wherein the rotor blade groove (10) is provided with circular direction grooves (13) that extend more in the circular direction of the rotor disc than upward from the bottom (14), and shaft center direction grooves (15) that are provided on the end faces (1a, 1b) of the rotor disc (1) in the center of the bottom (14) in the circular direction of the rotor disc and that extend towards the rotor disc shaft center.

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Inventors:

HIRATA TOMOYUKI (JP)
KATOU EIGO (JP)
ATSUMI HIDEKATSU (JP)

Application Number:

PCT/JP2012/076650

Publication Date:

April 25, 2013

Filing Date:

October 16, 2012

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)

International Classes:

F01D5/30; F01D5/06

Foreign References:

US20040115056A1	2004-06-17
JP2011012568A	2011-01-20
GB643914A	1950-09-27
JPS5997207U	1984-07-02
JPH11182494A	1999-07-06
JP2006329203A	2006-12-07
DE1051286B	1959-02-26
JP2008069781A	2008-03-27
JPS6261761A	1987-03-18

Other References: