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US 8,800,288 B2Granted
System for reducing vibrational motion in a gas turbine system
AssigneeGeneral Electric Company
InventorsKyle Lee Kidder, Marcus Byron Huffman, Stephen Wayne Tilley
Life of this patent
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Abstract
A system, including a combustor cap assembly, including a first plate configured to divide a combustion chamber from a head end chamber of a combustor, a first sleeve disposed about the first plate, and a first stiffening rib coupled to the combustor cap assembly, wherein the combustor cap assembly is configured to mount in a combustor, and the first stiffening rib is configured to damp vibration caused by combustion dynamics in the combustor.
Claims19
A system, comprising:
- a combustor cap assembly configured to mount in a combustor, the combustor cap assembly comprising:
- a first plate;
- a second plate axially offset relative to the first plate;
- a first fuel nozzle sleeve extending through the first and second plates;
- a first sleeve extending circumferentially around the first and second plates;
- a second sleeve extending circumferentially around the first sleeve at a radial offset from the first sleeve;
- a support structure extending radially between the first and second sleeves;
- and
- a first annular stiffening rib coupled to the combustor cap assembly, wherein the first annular stiffening rib extends circumferentially from the first sleeve or the second sleeve, and wherein the first annular stiffening rib is configured to damp resonant motion caused by combustion dynamics in the combustor.
6 more elements
A system, comprising:
- a combustor cap assembly, comprising:
- a first plate configured to divide a combustion chamber from a head end chamber of a combustor;
- a first sleeve disposed about the first plate;
- and
- a first annular stiffening rib directly coupled to the first sleeve of the combustor cap assembly, wherein the combustor cap assembly is configured to mount in a combustor, and the first annular stiffening rib is configured to damp vibration caused by combustion dynamics in the combustor.
2 more elements
A method, comprising:
- injecting a fuel from first and second fuel nozzles into a combustion chamber of a combustor, wherein the first and second fuel nozzles are supported by a combustor cap assembly disposed between the combustion chamber and a head end of the combustor, wherein the combustor cap assembly comprises first and second sleeves and first and second plates;
- combusting the fuel in the combustion chamber of the combustor;
- and
- reducing resonant motion of the combustor cap assembly caused by combustion dynamics associated with combusting the fuel using at least one annular stiffening rib coupled to the combustor cap assembly, wherein the at least one annular stiffening rib is tuned to at least one resonant frequency of the combustor cap assembly.
1 more element
Dependencies are inferred from the claim text.