EP 2857636 A1 20150408 - Enhanced cooling arrangement for a turbomachine component
Title (en)
Enhanced cooling arrangement for a turbomachine component
Title (de)
Verbesserte Kühlanordnung für eine Turbomaschinenkomponente
Title (fr)
Agencement de refroidissement amélioré pour composant de turbomachine
Publication
Application
Priority
EP 13186903 A 20131001
Abstract (en)
The invention addresses the issue of local over temperature of a turbomachine blade due to loss of protective thermal barrier coating (TBC). In predefined areas of the blade's (1) outer wall (21) recesses (73) are placed. The outer wall's thickness at the locations (72, d2) of the recesses is less than in regions (71, d1) surrounding the recess. In case of an over temperature due to a TBC loss, the thinner walls (d2) of the recess at the location of the TBC loss will melt away faster than the material of the thicker walls (d1) surrounding the recess. This will open up a hole (74) in the outer wall such that cooling fluid from the underlying core passage way can exit the blade, resulting in a film cooling effect. This cooling will protect the blade at least temporarily and guarantee a proper functioning until the next inspection.
IPC 8 full level
F01D 5/18 (2006.01); C23C 28/00 (2006.01); F01D 5/28 (2006.01)
CPC (source: EP)
F01D 5/186 (2013.01); F01D 5/187 (2013.01); F01D 5/20 (2013.01); F01D 5/288 (2013.01); F01D 11/08 (2013.01)
Citation (search report)
- [XI] EP 2354453 A1 20110810 - SIEMENS AG [DE]
- [X] EP 1669545 A1 20060614 - SIEMENS AG [DE]
- [X] US 2009074576 A1 20090319 - BROSTMEYER JOSEPH [US]
- [X] EP 1375825 A1 20040102 - GEN ELECTRIC [US]
- [X] US 2012156054 A1 20120621 - LACY BENJAMIN PAUL [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 13186903 A 20131001