EP0029619B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Gas-turbine combustor with premixing-prevaporizing elements
Assignee: BBC Brown Boveri AG Switzerland
•
Filing: 1980-10-16
•
Granted: 1983-06-01
•
Expires: 2000-10-16
Abstract
No abstract record available.
Inventors
- 👤 Eduard Brühwiler
- 👤 Hans Koch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:47
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/286; F23R3/02; F23R3/04; F23R3/10; F23R3/30; F23R3/32; F23D; F23D2209/00; F23D2209/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
166 words
Combustion chamber of a gas turbine, in which the air distribution chamber (19) and the combustion space (7) are separated locally from one another within the combustion-chamber casing (1), and in which are arranged between the distribution chamber (19) and the combustion space (7) several tubular elements (2) in which take place the pre-mixing and pre-vaporisation of the fuel oil supplied through nozzles (15) at the end on the same side as the distribution chamber and/or the pre-mixing of the fuel gas, supplied through nozzles (15) at the end on the same side as the distribution chamber, with the compressor air, in the case of a high air excess number, characterised in that one or more pilot elements (17) are located between the tubular elements (2), and in that each tubular element (2) and the pilot element or elements (17) are closed at their end on the same side as the combustion space by a flame retention baffle (3) provided with one or more orifices (8).
Claim 2
Dependent Claim
166 words
Combustion chamber of a gas turbine, in which the air distribution chamber (19) and the combustion space (7) are separated locally from one another within the combustion-chamber casing (1), and in which are arranged between the distribution chamber (19) and the combustion space (7) several tubular elements (2) in which take place the pre-mixing and pre-vaporisation of the fuel oil supplied through nozzles (15) at the end on the same side as the distribution chamber and/or the pre-mixing of the fuel gas, supplied through nozzles (15) at the end on the same side as the distribution chamber, with the compressor air, in the case of a high air excess number, characterised in that one or more pilot elements (17) are located between the tubular elements (2), and in that each tubular element (2) and the pilot element or elements (17) are closed at their end on the same side as the combustion space by a flame retention baffle (3) provided with one or more orifices (8).
Claim 3
Dependent Claim
61 words
Combustion chamber according to Claim 1, characterised in that, in the case of several pilot elements (17), these are arranged geometrically uniformly under the tubular elements (2), so that when the individual tubular elements (2) are started up in a sequence staggered as a function of the machine load a flash-over of the flame to the particular surrounding elements takes place.
Claim 4
Dependent Claim
25 words
Combustion chamber according to Claim 1, characterised in that the injection of the fuel supplied through nozzles (15) is directed against the air inflow direction.
Claim 5
Dependent Claim
46 words
Combustion chamber according to Claim 1, characterised in that the orifices (8) in the flame retention baffle (3) are cylindrical holes (21) which extend parallel to the axis of the tubular element (2) and the length of which is at least equal to 1.5 hole diameters.
Claim 6
Dependent Claim
68 words
Combustion chamber according to Claim 1, characterised in that the orifices (8) in the flame retention baffle (3) are holes (30) extending obliquely in radial planes of the flame retention baffle (3), the angle (36) increasing constantly from the centre to the periphery of the flame retention baffle (3) or remaining the same, and the length of the holes (30) being at least equal to 1.5 hole diameters.
Claim 7
Dependent Claim
68 words
Combustion chamber according to Claim 1, characterised in that the orifices (8) in the flame retention baffle (3) are holes (31) extending obliquely in tangential planes of the flame retention baffle (3), the angle (37) increasing constantly from the centre to the periphery of the flame retention baffle (3) or remaining the same, and the length of the holes (31) being at least equal to 1.5 hole diameters.
Claim 8
Dependent Claim
24 words
Combustion chamber according to Claim 1, characterised in that the orifices (8) in the flame retention baffle (3) are provided with swirl bodies (28).
Claim 9
Dependent Claim
89 words
Combustion chamber according to Claim 1, characterised in that the flame retention baffle (3) consists of a top plate (3a) and a bottom plate (3b), between which extends a channel (10) connected to the orifices (8), and in that the orifices (8) are each lined with two conical bushes (11, 12) which overlap one another telescopically and with play (16) in the region of the channel (10), with the result that the medium flowing through the channel (10) flows off together with the mixture from the tubular element (2).
Claim 10
Dependent Claim
40 words
Combustion chamber according to Claim 1, characterised in that the orifices (8) in the flame retention baffle (3) are designed as diffusors (40) with adjoining cylindrical orifices (33), the length of which amounts to at least 1.5 times their diameter.
Claim 11
Dependent Claim
32 words
Combustion chamber according to Claim 1, characterised in that several orifices (18) are made, round the outer shell of the tubular element (2), in the edge (13) of the flame retention baffle.
Claim 12
Dependent Claim
24 words
Combustion chamber according to Claim 1, characterised in that the outer periphery of the flame retention baffle (3) is designed as a polygon (20).
Claim 13
Dependent Claim
37 words
Combustion chamber according to Claim 1, characterised in that each tubular element (2) is provided at the end on the same side as the distribution chamber with a choke tube (14) and adjoining a sharp-edged orifice (34).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.