Global Patent Index - EP 2280151 A1

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

EP 2280151 A1 20110202 (EN)

Application

EP 09163488 A 20090623

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)

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)

EP 2280151 A1 20110202

DOCDB simple family (application)

EP 09163488 A 20090623