(19)
(11) EP 2 620 708 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.11.2017 Bulletin 2017/46

(43) Date of publication A2:
31.07.2013 Bulletin 2013/31

(21) Application number: 13152511.5

(22) Date of filing: 24.01.2013
(51) International Patent Classification (IPC): 
F23N 1/00(2006.01)
F23R 3/34(2006.01)
 F23R 3/28(2006.01)
(84) Designated Contracting States:
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 States:
BA ME

(30) Priority: 27.01.2012 JP 2012014960

(71) Applicant: Mitsubishi Hitachi Power Systems, Ltd.
Yokohama 220-8401 (JP)

(72) Inventors:
  • Miura, Keisuke
    Tokyo, 100-8220 (JP)
  • Koganezawa, Tomomi
    Tokyo, 100-8220 (JP)
  • Abe, Kazuki
    Tokyo, 100-8220 (JP)
  • Saito, Takeo
    Tokyo, 100-8220 (JP)

(74) Representative: MERH-IP Matias Erny Reichl Hoffmann Patentanwälte PartG mbB 
Paul-Heyse-Strasse 29
80336 München
80336 München (DE)

   


(54) Gas turbine combustor and operating method thereof


(57) A gas turbine combustor has a chamber supplied with fuel (50) and air (16) and a multi-burner (6) having a plurality of burners provided with an air hole plate (31) having a plurality of air holes (32), and fuel nozzles (25) for supplying fuel (50) to the air holes (32) in the air hole plate (31); the multi-burner (6) is made up of a center burner (33) disposed in the center and a plurality of outer burners (37) around the center burner (33), the outer burners (37) are divided into inner fuel nozzles (25) and outer fuel nozzles (25) to separately supply fuel through fuel systems (51 - 54), and the fuel (50) is supplied to the fuel nozzles (25) in the center burner (33) or to the fuel nozzles (25) in the center burner (33) and the inner fuel nozzles (25) in the outer burners (37) disposed around the center burner (33) in a partial load condition in which the load is lower than that of when all the fuel systems (51 - 54) are used to supply fuel (50).







Search report









Search report