| (19) |
 |
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(11) |
EP 1 975 513 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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20.05.2015 Bulletin 2015/21 |
| (43) |
Date of publication A2: |
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01.10.2008 Bulletin 2008/40 |
| (22) |
Date of filing: 13.03.2008 |
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| (51) |
International Patent Classification (IPC):
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| (84) |
Designated Contracting States: |
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AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL
PT RO SE SI SK TR |
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Designated Extension States: |
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AL BA MK RS |
| (30) |
Priority: |
14.03.2007 IT TO20070193
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| (71) |
Applicant: Ansaldo Energia S.p.A. |
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Genova (IT) |
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| (72) |
Inventors: |
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- Mori, Giulio
17100 Savona (IT)
- Anisimov, Vyacheslav V.
16161 Genova (IT)
- De Oliveira Silva Parente, Joao Miguel
2795-136 Linda-a-Velha, Oeiras (PT)
|
| (74) |
Representative: Bergadano, Mirko et al |
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Studio Torta S.p.A.
Via Viotti, 9
10121 Torino
10121 Torino (IT) |
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| |
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| (54) |
A premix burner for a gas turbine, in particular a microturbine |
(57) A gas turbine premix burner (1) is provided with a main annular duct (7) and a secondary
annular duct (24), which are concentric with respect to a longitudinal axis (3) and
have respective inlets (8, 25) for combustion air and respective axial outlets (9,
26), which give out, in use, into a combustion chamber (2); the main annular duct
(7) has an initial portion (10) housing a blading (12) generating vortices and houses
a plurality of pipes (39) for feeding combustible gas into the main annular duct (7);
said pipes (39) are arranged about the longitudinal axis (3) and downstream of the
blading (12) and each have at least one outlet hole (41), which has a radial component
with respect to the axis (40) of the pipe (39).