EP 2280151 A1 20110202 - Method for operating a gas turbine and rotor of a gas turbine
Title (en)
Method for operating a gas turbine and rotor of a gas turbine
Title (de)
Betriebsverfahren für eine Gasturbine und Rotor einer Gasturbine
Title (fr)
Procédé d'exploitation d'une turbine à gaz et rotor de turbine à gaz
Publication
Application
Priority
EP 09163488 A 20090623
Abstract (en)
The rotor (1) of a gas turbine has a plurality of rotor blade rows comprising a plurality of rotor blades (2). Each rotor blade is provided with a root (3) connected to a rotor body (4), a platform (5) that defines, with the platforms (5) of the other rotor blades (2) and a casing (6), a duct (7) in which the hot gases flow, and an airfoil (8) which exchanges mechanical power with the hot gases flow. Each rotor blade (2) also comprises beneath the platform (5) and at opposite side zones towards the root (3), a seat (9) housing a couple element (10) arranged to lie between two adjacent rotor blades (2) to couple the rotor blades (2) and additionally to seal the duct (7). During operation, the rotor blades (2) are all connected by the couple elements (10) and vibrate together as a coupled system, such that the natural frequencies of the rotor blades (2) vibrating together as a coupled system are away from the excitation vibrations. The present invention also relates to a method for operating a gas turbine.
IPC 8 full level
F01D 11/00 (2006.01)
CPC (source: EP)
F01D 5/22 (2013.01); F01D 11/006 (2013.01)
Citation (search report)
- [XI] EP 2009247 A2 20081231 - UNITED TECHNOLOGIES CORP [US]
- [XA] US 2005186074 A1 20050825 - TOMITA YASUOKI [JP], et al
- [XA] US 5302085 A 19940412 - DIETZ PHILIP W [US], et al
- [XA] US 5478207 A 19951226 - STEC PHILIP F [US]
- [XA] US 2836392 A 19580527 - SPACTH CHARLES E
- [XA] EP 1167691 A2 20020102 - GEN ELECTRIC [US]
- [XA] US 2912223 A 19591110 - HULL JR THOMAS N
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 MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
DOCDB simple family (application)
EP 09163488 A 20090623