EP 2735798 A1 20140528 - Gas turbine combustor
Title (en)
Gas turbine combustor
Title (de)
Gasturbinenbrennkammer
Title (fr)
Chambre de combustion de turbine à gaz
Publication
Application
Priority
EP 12194055 A 20121123
Abstract (en)
A gas turbine combustor (1) includes a combustion cylinder (2) and a premixing tube (3). A protruding wall (7) of the premixing tube has an inner diameter enlarging portion (10) with a chamfer (11) at its open end. A swirl flow in the premixing tube is guided outward along the chamfer (11), and the cross-section area of a straight flow in the premixing tube is expanded to lower the flow velocity, which shortens the distance between a flame in the combustion cylinder and the inner diameter enlarging portion (lift distance). When using the fuel with high heat radiation upon combustion, the inner diameter enlarging portion is replaced with the one having a smaller chamfer. The cross-section area of the straight flow is reduced to increase the flow velocity, making the lift distance long. This prevents damage to the combustion cylinder owing to the intensified heat radiation. The flame lift position retained in the combustion cylinder may be easily set and changed.
IPC 8 full level
F23R 3/16 (2006.01); F23R 3/28 (2006.01); F23R 3/46 (2006.01)
CPC (source: EP)
F23R 3/16 (2013.01); F23R 3/286 (2013.01); F23R 3/46 (2013.01)
Citation (applicant)
- JP 2009198054 A 20090903 - NIIGATA POWER SYSTEMS CO LTD
- US 5735681 A 19980407 - CHENG ROBERT K [US]
- US 5879148 A 19990309 - CHENG ROBERT K [US], et al
Citation (search report)
- [X] EP 0833105 A2 19980401 - ABB RESEARCH LTD [CH]
- [X] US 6572366 B2 20030603 - EROGLU ADNAN [CH], et al
- [X] US 2011265482 A1 20111103 - PARSANIA NISHANT GOVINDBHAI [IN], et al
- [X] US 5592819 A 19970114 - ANSART DENIS R H [FR], 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
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12194055 A 20121123