Gas turbine generator with dual steam-injected turbines
AssigneeIshikawajima-Harima Heavy Industries Co., Ltd.
InventorsKazuho Akiyama, Shigekazu Uji, Masaru Hirata
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Abstract
A gas turbine generator includes a first gas turbine 20 having an air compressor 21, first turbine 24a and a first combustor 25a; a second gas turbine 22 having a second turbine 24b and a second combustor 25b; a generator 27 driven by the first gas turbine and the second gas turbine; and a coupling 23 arranged between the generator and the second gas turbine for connection and disconnection. When residual steam is sufficiently supplied, the residual steam is fed to the first combustor and the second combustor while connecting the coupling, and when the residual steam is not sufficiently supplied, the residual steam is fed to only the first combustor while disconnecting the coupling.
Claims4
A gas turbine generator comprising:
- a generator;
- a first gas turbine assembly operatively connected to drive the generator, and including a first turbine having an intake and an exhaust, a first combustor having an intake and an exhaust operatively connected to output exhaust gas to the intake of the first turbine;
- a second gas turbine assembly operatively connected to drive the generator, including a second turbine having an intake and an exhaust, a second combustor having an intake and an exhaust operatively connected to output exhaust gas to the intake of the second turbine;
- an air compressor having an intake and an exhaust operatively connected to output compressed air to the intakes of the first and second combustors;
- a coupling arranged between the generator and the second gas turbine having a first configuration coupling the second gas turbine to the generator, and a second configuration decoupling the second gas turbine from the generator;
- and
- a mixed gas line connected to the inputs of the first and second combustors;
- and
- a controller, operatively connected to said coupling and programmed to couple and decouple said coupling, and connect and disconnect said mixed gas line from the second combustor, responsive to a flow rate of steam in said mixed gas line.
Dependencies are inferred from the claim text.