Abstract: A combustion nozzle discharges compressed air and fuel, to be combusted, into a combustion chamber of a combustor of a gas turbine. The combustion nozzle includes an air inlet, a nozzle orifice, an air channel, a fuel channel, and fuel outlets. The air inlet receives the compressed air. The nozzle orifice opens into the combustion chamber and discharges the compressed air. The air channel communicates between the air inlet and the nozzle orifice. The fuel channel receives the fuel, and discharges the fuel from the fuel outlets toward a flow of the compressed air discharged from the nozzle orifice. The air channel includes a Venturi section in which a channel cross-sectional area of the compressed air becomes relatively small. The fuel outlets are provided in the Venturi section.

Abstract: An air-bleed gas turbine includes a compressor; a combustor; a turbine; and an air bleed portion by which compressed air, which is supplied from the compressor to a circular space that surrounds the combustor, is partially supplied to a device outside the air-bleed gas turbine. The air bleed portion includes an air bleed passage that is communicated with an air bleed port which is connected to the device outside the air-bleed gas turbine, and a communication passage that is communicated with the circular space. The air bleed passage is communicated with the circular space through the communication passage. The flow passage area of the communication passage is increased as the distance from the air bleed port increases in the circumferential direction of the circular space.

Abstract: An air-bleed gas turbine includes a compressor; a combustor; a turbine; and an air bleed portion by which compressed air, which is supplied from the compressor to a circular space that surrounds the combustor, is partially supplied to a device outside the air-bleed gas turbine. The air bleed portion includes an air bleed passage that is communicated with an air bleed port which is connected to the device outside the air-bleed gas turbine, and a communication passage that is communicated with the circular space. The air bleed passage is communicated with the circular space through the communication passage. The flow passage area of the communication passage is increased as the distance from the air bleed port increases in the circumferential direction of the circular space.