FUEL MULTISTAGE SUPPLY STRUCTURE OF A COMBUSTOR FOR A GAS TURBINE ENGINE

摘要

PURPOSE: A multi-stage fuel supply structure of a combustor for a gas-turbine engine is provided to enable a combustor to smoothly start operation since the general operation and start operation of the combustor are differently controlled. CONSTITUTION: A multi-stage fuel supply structure of a combustor for a gas-turbine engine comprises a secondary-fuel supply unit(4) and a main-fuel supply unit(8). The secondary-fuel supply unit comprises a secondary port and a secondary-fuel supply channel(3). The secondary port guides fuel gas from a fuel tank to the combustor. The secondary-fuel supply channel guides high-pressure air and mixed gas to the liner of the combustor. The secondary-fuel supply channel is used when the combustor starts operation or suffers overload. The secondary-fuel supply channel is arranged adjacent to the central shaft of the combustor. The main-fuel supply unit comprises a main port and a main-fuel supply channel(7).