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US 6,804,946 B2Granted
Combustion system with shutdown fuel purge
AssigneeCapstone Turbine Corporation
InventorsJeffrey W. Willis, Guillermo Pont, Edward C. Edelman, Gunther Linzner
Life of this patent
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Abstract
Upon shutdown of a liquid fuel turbine engine, the liquid fuel supply is turned off and compressed air is passed through the fuel lines and fuel injectors to purge all remaining liquid fuel into the combustion chamber to be combusted therein.
Claims12
A turbogenerator system, comprising:
- a turbine;
- a combustor that combusts fuel and compressed air to generate hot gas to drive the turbine, the combustor including a fuel injector;
- a fuel line connected to the a fuel injector to supply fuel to the combustor from a liquid fuel source;
- an electric generator rotationally coupled to the turbine to generate electric power;
- a compressed gas source selectively coupled to the fuel line that passes compressed gas through the fuel line after shutdown of the turbogenerator to purge fuel from the fuel line and the fuel injector into the combustor;
- and
- a pressure regulator coupled to the compressed gas source that regulates the compressed gas passed through the fuel line,
- wherein the fuel purged from the fuel line and the fuel injector is combusted in the combustor.
5 more elements
Dependencies are inferred from the claim text.