Gas turbine combustion chamber

摘要

The gas turbine combustion chamber comprises a pilot fuel nozzle arranged in a central portion of a cylinder, a cylindrical outer casing that is radially spaced around an outer periphery of the fuel nozzle, where a pilot swirler element is arranged between the fuel nozzle and the outer casing, head burners that are arranged in radial direction to the pilot fuel nozzle, and a pilot cone (4) with inner side (11) and outer side (12). The cylinder opens itself at an end extending towards the combustion chamber. A pilot cone combustion-chamber side is arranged at the pilot fuel nozzle. The gas turbine combustion chamber comprises a pilot fuel nozzle arranged in a central portion of a cylinder, a cylindrical outer casing that is radially spaced around an outer periphery of the fuel nozzle, where a pilot swirler element is arranged between the fuel nozzle and the outer casing, head burners that are arranged in radial direction to the pilot fuel nozzle, and a pilot cone (4) with inner side (11) and outer side (12). The cylinder opens itself at an end extending towards the combustion chamber. A pilot cone combustion-chamber side is arranged at the pilot fuel nozzle and a combustion chamber side opening (6) so that a pilot flame is formed in the pilot cone by mixing of air and pilot fuel to ignite the fuel injected by the head burners. The pilot cone on its inner side and/or outside comprises turbulence generators. The turbulence generators are: arranged in a region of the opening of the pilot cone; distributed over the periphery of the pilot cone; and strips or strip rings that are arranged and spaced apart over the outer periphery of the pilot cone at an angle of 30-60[deg] , and trapezoidal strips that are arranged at the opening of the pilot cone over the entire periphery of the opening at an angle of +- 30[deg] . The gas turbine combustion chamber has an axial direction, and each head burner has a head nozzle. A gap is formed around the outer periphery of the relevant head nozzle, which is arranged around the outer cylinder. Extension tubes are formed with a combustion-chamber side outlet opening so that the openings of the outer cylinder extend in the axial direction to the opening of the pilot cone. The turbulence generators are arranged on an inner side of the extension tubes in the area of the outlet opening. An independent claim is included for a gas turbine.