| 摘要 |
PURPOSE: To enable reliable ignition at the time of start-up, by providing a means that introduces fuel into an annular channel at an acute angle to a common axis, and by providing a means that separately controls the introduction of the fuel into the annular channel by a toroidal manifold route. CONSTITUTION: A fuel assembly is arranged in a combustor 6, and comprises four concentric toroidal manifolds 70 to 73. Each of the fuel manifolds 70 to 73 is arranged in the immediate upstream side of one inlet end 34 of annular channels 23 to 26, and a plurality of fuel discharge ports 47 which are directed rearward are distributed around each of the manifolds 70 to 73 to be arranged. For example, the discharge ports are spaced about 2 cm apart from each other, and fuel 5 is distributed around the annular channels 23 to 26 equally. Each of the fuel discharge ports is directed at an angle of about 18 deg., and each of them directs the fuel 5 into the range of the radial outside of each of the annular channels 20 to 26 at a certain angle, so as to facilitate mixing. |
