| 摘要 |
PURPOSE:To perform an effective reduction with a less air amount, by a method wherein, in a combustion for gas turbine using LNG as fuel, fuel and air are evenly mixed by a first and a second mixing eddy generating means. CONSTITUTION:Fuel 39, such as LNG, is jetted to an inlet of a top combustion chamber 11 from a fuel nozzle 5, combustiom air 41 and fuel 39 are mixed by an air revolving device 6, and the mixture gas is ignited by an ignition plug for burning. In the top combustion chamber 11, the chamber is formed in a smaller diameter than that of a main combustion chamber33, and this promotes the mixture of the fuel 39 and the fuel air 41, and shortens a combustion reaction time. During said combustion, revolving airs 43 and 49 flow from a connecting direction to the inside of each top combustion chamber 11 through revolving air intriducing holes 15 and 18, of which a first and a second mixture eddy air generating means consists, and a part of fuel gas flows backward in the diretion of a fuel nozzle 5 through the force of revolving airs 45, 49. This increases a force of a so-called counter-flow 43 and improves a flame-holding property. |
