EP 1840333 A1 20071003 - Turbine blade with shroud portions
Title (en)
Turbine blade with shroud portions
Title (de)
Turbinenschaufel mit Deckbandteile
Title (fr)
Aube de turbine ayant des portions de bande de renforcement
Publication
Application
Priority
EP 06112086 A 20060331
Abstract (en)
Rotating turbine blades in a blade row for a gas turbine have shrouds with shroud portions (8 ss , 8 ps , 8' ss , 8' ps ) having different bending moments. The shroud portions with the smaller bending moment (8 ss ) have edges with radially outer parts (12) that protrudes in circumferential direction over radially inner parts (13) of the shroud portion (8' ps ) of the adjacent blade that has a greater bending moment. The protruding shroud edge limits creep deformation of the shroud portion with the greater bending moment. The measure thus limits hot gas ingestion and prolongs turbine blade lifetime.
IPC 8 full level
F01D 5/22 (2006.01)
CPC (source: EP)
F01D 5/225 (2013.01)
Citation (applicant)
- DE 102004025321 A1 20051208 - ALSTOM TECHNOLOGY LTD BADEN [CH]
- JP H07233703 A 19950905 - MITSUBISHI HEAVY IND LTD
- EP 0928880 A1 19990714 - MITSUBISHI HEAVY IND LTD [JP]
Citation (search report)
- [XY] FR 1374917 A 19641009 - ASS ELECT IND
- [Y] US 5511948 A 19960430 - SUZUKI ATSUHIDE [JP], et al
- [YD] DE 102004025321 A1 20051208 - ALSTOM TECHNOLOGY LTD BADEN [CH]
- [DA] EP 0928880 A1 19990714 - MITSUBISHI HEAVY IND LTD [JP]
- [A] US 2220918 A 19401112 - SMITH ARTHUR R
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 06112086 A 20060331