EP 4148327 A1 20230315 - GAS TURBINE ENGINE WITH ACOUSTIC MODE STABILIZATION, METHOD FOR CONTROLLING AND METHOD FOR RETROFITTING A GAS TURBINE ENGINE
Title (en)
GAS TURBINE ENGINE WITH ACOUSTIC MODE STABILIZATION, METHOD FOR CONTROLLING AND METHOD FOR RETROFITTING A GAS TURBINE ENGINE
Title (de)
GASTURBINENMOTOR MIT AKUSTISCHER MODENSTABILISIERUNG, VERFAHREN ZUR STEUERUNG UND VERFAHREN ZUM NACHRÜSTEN EINES GASTURBINENMOTORS
Title (fr)
MOTEUR À TURBINE À GAZ À STABILISATION DE MODE ACOUSTIQUE, PROCÉDÉ DE COMMANDE ET PROCÉDÉ DE MODIFICATION DE MOTEUR À TURBINE À GAZ
Publication
Application
Priority
EP 21195837 A 20210909
Abstract (en)
A gas turbine engine includes a combustor (3) having a natural vibration frequency (fo) and provided with a plurality of first burners (17) and a plurality of second burners (18). The first burners (17) are configured to produce first flames with a first time delay (τ<sub>1</sub>) and the second burners (18) are configured to produce second flames with a second time delay (τ<sub>2</sub>). A difference between the first time delay (τ<sub>1</sub>) and the second time delay (τ<sub>2</sub>) is equal to a reciprocal of the natural vibration frequency (f<sub>0</sub>): τ1−τ2=1/f0 where τ<sub>1</sub> is the first time delay, τ<sub>2</sub> is the second time delay and f<sub>0</sub> is the natural vibration frequency of the combustor.
IPC 8 full level
CPC (source: EP)
F23R 3/283 (2013.01); F23R 3/50 (2013.01); F05D 2260/964 (2013.01); F23R 2900/00013 (2013.01); F23R 2900/00014 (2013.01); F23R 2900/00016 (2013.01)
Citation (search report)
- [XYI] US 2004093851 A1 20040520 - DAWSON ROBERT W [US]
- [Y] EP 2848865 A1 20150318 - ALSTOM TECHNOLOGY LTD [CH]
- [XI] DE 102004015186 A1 20051020 - ALSTOM TECHNOLOGY LTD BADEN [CH]
- [XI] US 2001018172 A1 20010830 - LOVETT JEFFERY ALLAN [US], et al
- [XI] US 2008053097 A1 20080306 - HAN FEI [US], et al
- [XI] US 2015219337 A1 20150806 - CROTHERS SARAH LORI [US], et al
- [XI] US 2003041588 A1 20030306 - JOOS FRANZ [DE], et al
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 21195837 A 20210909; CN 202211099646 A 20220909