| 摘要 |
A combustor for a gas turbine engine including a two-stage burner having first and second combustion and exhaust sections and a burner casing coaxially surrounding the burner to define an annular conduit for reverse flow of inlet air. The burner includes a fuel injector at the upstream end thereof, primary inlet ports introducing 18% of inlet air into the first combustion section, first cooling ports introducing 12% of inlet air into the first combustion section for generating a swirling cooling flow which mixes with primary air after cooling the upstream end of the first combustion section, secondary inlet ports introducing 18% of inlet air into second stage combustion section, second cooling ports introducing 8% of inlet air into the second combustion section to generate a swirling flow which mixes with primary air after cooling the upstream end of the second combustion section, and dilution ports introducing 44% of inlet air into the exhaust section to cool the exhaust gas.
|
