METHOD FOR SHUTTING DOWN A GENERATOR TO PREPARE THE GENERATOR FOR RESTART
First Claim
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1. A method of shutting down a generator to prepare the generator for restart, comprisinginitiating a power down sequence of a gas turbine of the generator from an operating state;
- forcing a purge gas into the gas turbine to extinguish a combustion flame in the gas turbine; and
sweeping the purge gas through the gas turbine to displace the fuel from the gas turbine using a coast down airflow through the gas turbine during the power down sequence to prepare the generator for restart.
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Abstract
A method and apparatus for shutting down a generator to prepare the generator for restart is disclosed. A power down sequence of a gas turbine of the generator is initiated from an operating state. A purge gas is forced into the gas turbine to extinguish a combustion flame in the gas turbine. The purge gas is swept through the gas turbine to displace the fuel from the gas turbine using a coast down airflow through the gas turbine during the power down sequence to prepare the generator for restart.
43 Citations
20 Claims
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1. A method of shutting down a generator to prepare the generator for restart, comprising
initiating a power down sequence of a gas turbine of the generator from an operating state; -
forcing a purge gas into the gas turbine to extinguish a combustion flame in the gas turbine; and sweeping the purge gas through the gas turbine to displace the fuel from the gas turbine using a coast down airflow through the gas turbine during the power down sequence to prepare the generator for restart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A generator, comprising:
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a combustion chamber; a fuel system coupled to the combustion chamber configured to provide a purge gas to extinguish a combustion flame in the combustion chamber; and a source of the purge gas configured to provide the purge gas to the fuel system, wherein the purge gas displaces fuel remaining in the generator after the combustion flame is extinguished during a shutdown sequence of the generator, wherein the purge gas is swept through the generator using a coast down airflow of the generator. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification