EP 1552111 A1 20050713 - GAS TURBINE VENTILATION CIRCUITRY
Title (en)
GAS TURBINE VENTILATION CIRCUITRY
Title (de)
GASTURBINENLÜFTUNGSSCHALTUNGSANORDNUNG
Title (fr)
CIRCUITS DE VENTILATION DE LA TURBINE D UNE TURBOMACHINE
Publication
Application
Priority
- FR 0301958 W 20030625
- FR 0207979 A 20020627
Abstract (en)
[origin: WO2004003347A1] The invention concerns the ventilation circuitry of a gas turbine rotor (1) comprising a turbine disc (3) an upstream side-plate (5) arranged upstream of a combustion chamber and separated therefrom by a cavity (12). A first cooling air circuit delivers air into the cavity (12) via main injectors (15) and holes provided in the side-plate (5). A second cooling air circuit delivers air through chambers delimited by the inner housing of the combustion chamber and the rotor via a discharge labyrinth, a sub-injector labyrinth and at least one labyrinth arranged downstream of the main injectors between an annular structure (27) and the side-plate (5). The invention is characterized in that there are provided three labyrinths (31, 32, 33) comprising each a leak-prevention unit downstream of the main injectors, and which define two cavities (34, 35) upstream of the purging cavity (20) of the turbine disc (3). One of said cavities (34, 35) is supplied with air tapped from the second circuit upstream of the sub-injector labyrinth through perforations (38) sloping tangentially in the rotational direction of the rotor and arranged in the annular structure (27).
IPC 1-7
IPC 8 full level
F01D 11/04 (2006.01); F01D 1/00 (2006.01); F01D 5/08 (2006.01); F01D 5/30 (2006.01); F01D 11/02 (2006.01); F02C 7/18 (2006.01); F02C 7/28 (2006.01)
CPC (source: EP US)
F01D 5/081 (2013.01 - EP US); F01D 5/3015 (2013.01 - EP US); F01D 11/02 (2013.01 - EP US); F02C 7/28 (2013.01 - EP US); Y02T 50/60 (2013.01 - EP US)
Citation (search report)
See references of WO 2004003347A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2841591 A1 20040102; FR 2841591 B1 20060113; AU 2003253082 A1 20040119; CA 2490619 A1 20040108; EP 1552111 A1 20050713; JP 2005530956 A 20051013; MA 27255 A1 20050301; RU 2005101887 A 20050627; US 2005201859 A1 20050915; WO 2004003347 A1 20040108
DOCDB simple family (application)
FR 0207979 A 20020627; AU 2003253082 A 20030625; CA 2490619 A 20030625; EP 03761639 A 20030625; FR 0301958 W 20030625; JP 2004516864 A 20030625; MA 28009 A 20041216; RU 2005101887 A 20030625; US 51761304 A 20041222