EP 1612372 A1 20060104 - Turbine blade with a cut-back at the root of the blade
Title (en)
Turbine blade with a cut-back at the root of the blade
Title (de)
Turbinenschaufel mit einem Hinterschnitt am Schaufelfuss
Title (fr)
AUBE DE TURBINE AVEC UNE PARTIE DECOUPÉE AU PIED DE L'AUBE
Publication
Application
Priority
EP 04103117 A 20040701
Abstract (en)
A turbine blade (1) for a steam or gas turbine comprises a trailing edge (5) that is shaped having a cut-back (10) in one or both the end-regions near the blade tip (3) and blade platform (6). The end-region or end-regions with a cut-back (10) are twisted with respect to the mid-region (9) of the blade. The end-region (8b) near the blade platform (6) is additionally leaned in the direction perpendicular to the chord of the blade where the pressure side (32) is leaned toward the platform (6). In a turbine with blades according to this invention a reduced amount of secondary vortex flows develop.
IPC 8 full level
F01D 5/14 (2006.01)
CPC (source: EP)
F01D 5/141 (2013.01); F01D 5/143 (2013.01); F01D 5/145 (2013.01)
Citation (search report)
- [X] JP 2002256810 A 20020911 - TOSHIBA CORP & JP 2002256810 T
- [X] EP 0798447 A2 19971001 - MTU MUENCHEN GMBH [DE]
- [A] FR 2053049 A1 19710416 - ROLLS ROYCE
- [A] EP 0745755 A1 19961204 - UNITED TECHNOLOGIES CORP [US]
- [A] EP 0985801 A2 20000315 - TOSHIBA KK [JP]
- [A] EP 0441097 A1 19910814 - UNITED TECHNOLOGIES CORP [US]
- [A] US 2660401 A 19531124 - HULL JR THOMAS N
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04103117 A 20040701