(19)
(11) EP 1 710 502 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.03.2007 Bulletin 2007/11

(43) Date of publication A2:
11.10.2006 Bulletin 2006/41

(21) Application number: 06111895.6

(22) Date of filing: 29.03.2006
(51) International Patent Classification (IPC): 
F23R 3/28(2006.01)
F23R 3/14(2006.01)
 F23R 3/34(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 30.03.2005 IT TO20050208

(71) Applicant: ANSALDO ENERGIA S.P.A.
16152 Genova (IT)

(72) Inventors:
  • Bonzani, Federico
    16156 Genova (IT)
  • Pollarolo, Giacomo
    16126 Genova (IT)
  • Corona, Vittorio
    16156 Genova (IT)
  • Piana, Carlo
    21100 Varese (IT)

(74) Representative: Jorio, Paolo et al
Studio Torta S.r.l. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Gas burner assembly for a gas turbine


(57) A gas burner assembly for a gas turbine has a first, premix, burner (5), and a second burner (4) surrounded by the first burner (5); the second burner has a swirler (16) with vanes (21), a channel (40, 55) for feeding combustion air into the gaps (22) in the swirler (16), and at least a first gas feed line (52) for feeding a stream of fuel gas into the gaps (22); the first gas feed line (52) has an outlet (51) designed to generate a premix pilot flame, and the channel (40) has a number of calibrated-section choke holes (56) for setting combustion air flow to the swirler (16).







Search report