| 摘要 |
<p>A premixer for a single stage combustor system has a venturi-type mixing tube (16, 22) with a flow axis, an inlet (16, 24) adjacent one axial mixing tube end, and a nozzle (16, 40) at the opposite axial mixing tube end. The mixing tube inlet (16, 24) is flow connected to a source of compressed air and a source of fuel, and the mixing tube (16, 22) is connected to a combustion chamber, which can have an annular or can-type liner, at a chamber inlet, and the nozzle extends into the combustion chamber and has at least one port for distributing the fuel/air mixture within the combustion zone. The nozzle includes skirt and plate (16, 50) portions which have respective cooling channels supplied with compressed air to mitigate the effects of flashbacks and burning within the nozzle, air valve and remote from the premixer, while the nozzle cooling channels are fed from the sector of the plenum adjacent the premixer.</p> |
