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US 11,204,166 B2Granted
Burner including an acoustic damper
AssigneeSiemens Energy Global GmbH & Co. KG
InventorsJan-Erik Lundgren, Jan Pettersson
Life of this patent
Estimating the term…
Abstract
A burner of a turbomachine, particularly a gas turbine engine, has at least one burner section having an annular wall surrounding a respective section of a burner interior, the annular wall including: an annular inner surface delimiting the burner interior, and a plurality of dampening cavities for the dampening of thermo-acoustic vibrations in the burner interior, each dampening cavity being connected to the annular inner surface through at least a dampening hole. A method of manufacturing such a burner includes additive manufacturing of the annular wall as an integrally formed component, or additive manufacturing of the upstream burner section, wherein the intermediate burner section and the downstream burner section as integrally formed component.
Claims10
A burner of a turbomachine or a gas turbine engine, comprising:
- an upstream burner section for providing a first fuel and a fluid containing oxygen to an upstream end of a burner interior;
- at least one intermediate burner section having an annular wall surrounding a respective section of the burner interior;
- and
- a downstream burner section for providing a second fuel to a downstream end of the burner interior or to a combustion chamber;
- wherein the annular wall comprises:
- an annular inner surface delimiting the burner interior,
- a plurality of dampening cavities for dampening of thermo-acoustic vibrations in the burner interior, each dampening cavity being connected to the annular inner surface through at least a dampening hole, wherein each dampening cavity is connected to an annular outer surface of the annular wall through at least a purging hole, and
- an annular cooling fluid passage extending from an annular row of cooling fluid inlet holes provided on the annular outer surface to a plurality of effusion holes provided on the annular inner surface;
- wherein the annular row of cooling fluid inlet holes is the only annular row of cooling fluid inlet holes;
- and
- wherein the purging hole of each dampening cavity is downstream of the annular row of cooling fluid inlet holes.
8 more elements
A combustor, comprising:
- a plurality of burners, wherein at least one burner of the plurality of burners comprising:
- an upstream burner section for providing a first fuel and a fluid containing oxygen to an upstream end of a burner interior;
- at least one intermediate burner section having an annular wall surrounding a respective section of the burner interior;
- and
- a downstream burner section for providing a second fuel to a downstream end of the burner interior or to at least one combustion chamber;
- wherein the annular wall comprises:
- an annular inner surface delimiting the burner interior,
- a plurality of dampening cavities for dampening of thermo-acoustic vibrations in the burner interior, each dampening cavity being connected to the annular inner surface through at least a dampening hole, wherein each dampening cavity is connected to an annular outer surface of the annular wall through at least a purging hole, and
- an annular cooling fluid passage extending from an annular row of cooling fluid inlet holes provided on the annular outer surface to a plurality of effusion holes provided on the annular inner surface;
- wherein the annular row of cooling fluid inlet holes is the only annular row of cooling fluid inlet holes;
- wherein the purging hole of each dampening cavity is downstream of the annular row of cooling fluid inlet holes;
- and
- wherein the at least one combustion chamber is arranged downstream of the at least one burner.
10 more elements
A method of manufacturing a burner, the method comprising:
- providing an upstream burner section for providing a first fuel and a fluid containing oxygen to an upstream end of a burner interior;
- providing at least one intermediate burner section having an annular wall surrounding a respective section of the burner interior;
- and
- providing a downstream burner section for providing a second fuel to a downstream end of the burner interior or to a combustion chamber;
- wherein the annular wall comprises:
- an annular inner surface delimiting the burner interior,
- a plurality of dampening cavities for dampening of thermo-acoustic vibrations in the burner interior, each dampening cavity being connected to the annular inner surface through at least a dampening hole, wherein each dampening cavity is connected to an annular outer surface of the annular wall through at least a purging hole, and
- an annular cooling fluid passage extending from an annular row of cooling fluid inlet holes provided on the annular outer surface to a plurality of effusion holes provided on the annular inner surface;
- wherein the annular row of cooling fluid inlet holes is the only annular row of cooling fluid inlet holes;
- wherein the purging hole of each dampening cavity is downstream of the annular row of cooling fluid inlet holes;
- and
- additive manufacturing of the annular wall as a first integrally formed component, or additive manufacturing of the upstream burner section, the intermediate burner section and the downstream burner section as a second integrally formed component.
9 more elements
Dependencies are inferred from the claim text.