EP 3289182 A1 20180307 - TURBINE BLADE
Title (en)
TURBINE BLADE
Title (de)
TURBINENSCHAUFEL
Title (fr)
AUBE DE TURBINE
Publication
Application
Priority
- EP 15175301 A 20150703
- EP 2016064274 W 20160621
Abstract (en)
[origin: WO2017005484A1] The invention relates to a cast turbine blade (10) having a platform (16) and a hollow blade airfoil (18) arranged thereon, wherein the blade airfoil (18) has a pressure-side blade wall (34) and a suction-side blade wall (32) that extend, along a centrally arranged curved profile centerline (42), from a common leading edge (28) to a common trailing edge (30), and having a transition (36), with an outer contour profile, between the blade airfoil and the platform (36), wherein the blade walls (32, 34) each have a locally determined blade wall thickness (D), wherein the turbine blade has, internally, a contour profile that partially matches the outer contour profile of the transition (36) such that the region of the transition (36) has an essentially constant blade wall thickness. In order to further improve the service life of such a turbine blade, it is provided that, in the transition (36), the contour profile at a surface section (40) of the blade airfoil facing the leading edge (28) is such that the blade wall thickness is increased there in comparison to the blade wall thickness of the transition away from the leading edge.
IPC 8 full level
F01D 5/14 (2006.01)
CPC (source: EP US)
F01D 5/14 (2013.01 - EP US); F01D 5/147 (2013.01 - EP US); F01D 9/041 (2013.01 - US); F05D 2220/32 (2013.01 - US); F05D 2230/21 (2013.01 - EP US); F05D 2240/12 (2013.01 - US); F05D 2240/301 (2013.01 - US); F05D 2240/80 (2013.01 - US)
Citation (search report)
See references of WO 2017005484A1
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)
EP 3112589 A1 20170104; CN 107735548 A 20180223; CN 107735548 B 20190712; EP 3289182 A1 20180307; EP 3289182 B1 20200325; JP 2018524511 A 20180830; JP 6469897 B2 20190213; US 10301944 B2 20190528; US 2018187551 A1 20180705; WO 2017005484 A1 20170112
DOCDB simple family (application)
EP 15175301 A 20150703; CN 201680039384 A 20160621; EP 16733363 A 20160621; EP 2016064274 W 20160621; JP 2017567740 A 20160621; US 201615739299 A 20160621