| 摘要 |
A gas-turbine engine combustion system comprises a plurality of combustors (100) interconnected by crossfire tube assemblies adapted to pass an ignition flame (110) from an ignited combustor to another combustor on start-up of the engine. Each crossfire tube assembly comprises a cooling air inlet (103, 105) for introducing air into the assembly to film-cool its inner ignition flame-facing surface, and a cooling sleeve (107) surrounding the crossfire tube assembly in the region in which it opens into the combustor. The cooling sleeve directs the cooling air (109) so as to cool the outer surface of the assembly, the inside of the sleeve and the inside surface of the combustor wall (101) adjacent the cooling sleeve. <IMAGE> |
