Combustor having a damper for a turbine engine
AssigneeGeneral Electric Company
InventorsFei Han, Nicholas Arthur Magina
Life of this patent
Estimating the term…
Abstract
A combustor for a turbine engine. The combustor includes a combustion chamber and a damper. The combustion chamber is configured to combust a mixture of a fuel flow and a compressed air flow to generate combustion products. The damper is in fluid communication with the combustion chamber to damp an instability generated in the combustion chamber by the combustion products. The damper includes a damper cavity and one or more damper necks. The damper necks provide fluid communication between the damper cavity and the combustion chamber. The damper necks extend along a damper neck longitudinal centerline axis and include a tapered portion that extends at a damper neck taper angle α with respect to the damper neck longitudinal centerline axis.
Claims20
A combustor for a turbine engine, the combustor comprising:
- a combustion chamber that is configured to combust a mixture of a fuel flow and a compressed air flow to generate combustion products;
- and
- a damper in fluid communication with the combustion chamber to damp an instability generated in the combustion chamber by the combustion products, the damper including:
- a damper cavity;
- and
- one or more damper necks that provide fluid communication between the damper cavity and the combustion chamber, the one or more damper necks extending along a damper neck longitudinal centerline axis and including a tapered portion that extends at a damper neck taper angle α with respect to the damper neck longitudinal centerline axis that is in a range from 51° to 69°.
A turbine engine comprising:
- a compressor section for compressing air flowing therethrough to provide a compressed air flow;
- a combustor including a combustion chamber that is configured to combust a mixture of a fuel flow and the compressed air flow to generate combustion products;
- a turbine section having at least one turbine driven by the combustion products;
- and
- a damper in fluid communication with the combustion chamber to damp an instability generated in the combustion chamber by the combustion products, the damper including:
- a damper cavity;
- and
- one or more damper necks that provide fluid communication between the damper cavity and the combustion chamber, the one or more damper necks extending along a damper neck longitudinal centerline axis and including a tapered portion that extends at a damper neck taper angle α with respect to the damper neck longitudinal centerline axis that is in a range from 51° to 69°.
A combustor for a turbine engine, the combustor comprising:
- a combustion chamber that is configured to combust a mixture of a fuel flow and a compressed air flow to generate combustion products;
- and
- a damper in fluid communication with the combustion chamber to damp an instability generated in the combustion chamber by the combustion products, the damper including:
- a damper cavity;
- and
- one or more damper necks that provide fluid communication between the damper cavity and the combustion chamber, the one or more damper necks extending along a damper neck longitudinal centerline axis and including a tapered portion that extends at a damper neck taper angle α with respect to the damper neck longitudinal centerline axis that is greater than or less than zero, wherein the damper is characterized by a damper neck ingestion ratio (DNIR) value in a range from 35.00(°)−1 to 56.00(°)−1 the DNIR value given by:
- DNIR
- =
- (
- (
- OAR
- outlet
- OAR
- inlet
- )
- +
- L
-
- R
- t
-
- a
-
- p
-
- e
-
- r
-
- e
-
- d
- )
- ×
- 1
-
- 0
-
- 0
-
- 0
- α
- ,
- where OARoutlet is a ratio of a tapered portion outlet diameter of the tapered portion to a damper cavity diameter of the damper cavity times a number of the one or more damper necks in the damper, OARinlet is a ratio of a tapered portion inlet diameter of the tapered portion to the damper cavity diameter times the number of the one or more damper necks in the damper, LRtapered is a ratio of a tapered portion length of the tapered portion to a total length of each of the one or more damper necks, and α is the damper neck taper angle in degrees.
Dependencies are inferred from the claim text.