Global Patent Index - EP 2025870 A2

EP 2025870 A2 2009-02-18 - Method for modifying a gas turbine blade

Title (en)

Method for modifying a gas turbine blade

Title (de)

Verfahren zur Modifizierung einer Gasturbinenschaufel

Title (fr)

Procédé de modification d'une pale de turbine à gaz

Publication

EP 2025870 A2 (EN)

Application

EP 08161606 A

Priority

IT MI20071564 A

Abstract (en)

A method for modifying a gas turbine blade (1) provided with an internal cooling circuit (3) in which a cooling fluid flows provides for calculating a distribution of the external temperature (T E ) of the blade (1); identifying critical zones of the blade (1) in which the external temperature (T E ) of the blade (1) exceeds a predetermined limit (T L ); and calculating a configuration of a plurality of through holes (16) to be made in the blade (1) and connected to the cooling circuit (3) of the blade (1) for lowering the external temperature (T E ) of said critical zones below the predetermined limit (T L ).

IPC 8 full level (invention and additional information)

F01D 5/18 (2006.01)

CPC (invention and additional information)

F01D 5/186 (2013.01); F05D 2230/80 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

EPO simple patent family

EP 2025870 A2 20090218; IT MI20071564 A1 20090201

INPADOC legal status


2013-09-04 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20130201

2009-02-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

2009-02-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA MK RS