Title (en)

Gas turbine combustor

Title (de)

Gasturbinenbrennkammer

Title (fr)

Chambre de combustion de turbine à gaz

Publication

EP 1288576 A3 20040107 (EN)

Application

EP 02016027 A 20020718

Priority

JP 2001254360 A 20010824

Abstract (en)

[origin: EP1288576A2] A gas turbine combustor comprising a pilot nozzle (12) arranged on a central axis of said combustor and a plurality of pre-mixing nozzles (11) arranged around the pilot nozzle (12). A diameter of a combustion zone of the combustor is set such that, where an area is taken on a radial directional plane of the combustor, the area inside of the combustion zone and outside of a pitch circle (P) that is defined as a circle on which all central axes of the plurality of pre-mixing nozzles (11) are arranged, less the area taken by the plurality of pre-mixing nozzles (11) outside of the pitch circle (P), is a half or more of the area of all of the plurality of pre-mixing nozzles (11). With this structure, the flame holding ability of the combustor can be enhanced, the pilot fuel quantity can be reduced and a very low NOx generation can be realized. <IMAGE>

IPC 1-7

F23R 3/28; F23D 14/74; F23D 14/78

IPC 8 full level

F23C 99/00 (2006.01); F23D 14/02 (2006.01); F23D 14/74 (2006.01); F23D 14/78 (2006.01); F23R 3/28 (2006.01); F23R 3/32 (2006.01)

CPC (source: EP US)

F23D 14/74 (2013.01 - EP US); F23D 14/78 (2013.01 - EP US); F23R 3/283 (2013.01 - EP US); F23R 3/286 (2013.01 - EP US); F23D 2900/00008 (2013.01 - EP US)

Citation (search report)

• [Y] US 5899074 A 19990504 - KOMATSU YASUTAKA [JP], et al
• [Y] US 4765146 A 19880823 - HELLAT JAAN [CH], et al
• [A] EP 0952392 A2 19991027 - MITSUBISHI HEAVY IND LTD [JP]
• [A] US 5235814 A 19930817 - LEONARD GARY L [US]
• [A] WO 0009945 A1 20000224 - ASEA BROWN BOVERI [SE], et al
• [A] US 5839283 A 19981124 - DOEBBELING KLAUS [CH]
• [A] EP 0378505 A1 19900718 - UNITED TECHNOLOGIES CORP [US]

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

EP 1288576 A2 20030305; EP 1288576 A3 20040107; CA 2394118 A1 20030224; CN 1172116 C 20041020; CN 1403745 A 20030319; JP 2003065537 A 20030305; US 2003037549 A1 20030227

DOCDB simple family (application)

EP 02016027 A 20020718; CA 2394118 A 20020718; CN 02126826 A 20020722; JP 2001254360 A 20010824; US 19836802 A 20020719