EP 1995413 B1 20100428 - Gap seal for airfoils of a turbomachine
Title (en)
Gap seal for airfoils of a turbomachine
Title (de)
Spaltdichtung für Schaufeln einer Turbomaschine
Title (fr)
Joint d'étanchéité pour le jeu d'aubes d'une turbomachine
Publication
Application
Priority
CH 5732007 A 20070405
Abstract (en)
[origin: US2008247867A1] A gap seal ( 9 ) radially seals a gap ( 8 ) which extends axially and radially between two blades ( 1, 2 ) of a turbomachine which are adjacent in the circumferential direction ( 3 ). The two blades ( 1, 2 ) have, in each case, an axially extending longitudinal slot ( 10, 11 ), which is open towards the gap ( 8 ), on its respective blade root ( 6, 7 ). A band-form or strip-form sealing element ( 12 ) engages with its longitudinal sides ( 13, 14 ) in the two longitudinal slots ( 10, 11 ) and bridges the gap ( 8 ). The one blade ( 1 ) has a projection ( 15 ) on its blade root ( 6 ), which projects from the blade root ( 6 ) in the circumferential direction ( 3 ) and extends in the circumferential direction ( 3 ) and radially, at least in the region of the respective longitudinal slot ( 10 ), and bridges an axial longitudinal end of the gap ( 8 ) in the process. The other blade ( 2 ) has a step-shaped recess ( 16 ) on its blade root ( 7 ), complementary to the projection ( 15 ) of the one blade ( 1 ) and in which the projection engages. The projection ( 15 ) has a transverse slot ( 17 ) which extends in the circumferential direction ( 3 ) and is open towards the gap ( 8 ). The sealing element ( 12 ) engages with an end face ( 18 ) in the transverse slot ( 17 ).
IPC 8 full level
F01D 11/00 (2006.01)
CPC (source: EP US)
F01D 11/008 (2013.01 - EP US)
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
DOCDB simple family (publication)
US 2008247867 A1 20081009; US 8043050 B2 20111025; AT E466169 T1 20100515; DE 502008000588 D1 20100610; EP 1995413 A1 20081126; EP 1995413 B1 20100428; ES 2345303 T3 20100920; JP 2008255989 A 20081023; JP 5094510 B2 20121212
DOCDB simple family (application)
US 5750608 A 20080328; AT 08153316 T 20080326; DE 502008000588 T 20080326; EP 08153316 A 20080326; ES 08153316 T 20080326; JP 2008095606 A 20080402