FUEL INJECTION DEVICE FOR GAS TURBINE

摘要

Provided is a fuel injection device for gas turbines that is capable of uniformizing, with a simple structure and at low cost, the concentration distribution of a fuel gas and water vapor in a combustion chamber, and that is capable of effectively reducing NOx. Disclosed is a fuel injection device having a fuel nozzle (5) that mixes a fuel gas (H) and water vapor (W) and injects the same into a combustion chamber (22), the fuel injection device comprising: a nozzle housing (31) that has a mixing chamber (30) in the interior thereof; a first introduction channel (7) that introduces the fuel gas (H) into the mixing chamber (30) from outside the nozzle housing (31); a second introduction channel (8) that introduces the water vapor (W) into the mixing chamber (30) from outside the nozzle housing (31); and a plurality of inverting channels (51, 52) that are in communication with the downstream end of the mixing chamber (30) and that invert the mixed gas (G) from the mixing chamber (30) a plurality of times.