| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas turbine combustor which appropriately mixes fuel and combustion air and reduces NOx emission. <P>SOLUTION: A combustor burner includes: a fuel nozzle 26 for jetting the fuel to a combustion chamber; a center rod 24 arranged on a center axis of the fuel nozzle; and air holes 27 for supplying the combustion air introduced from a compressor into the fuel nozzle. The air holes 27 are formed so that the combustion air is jetted toward the axial center side of a center rod. Further, the fuel nozzle 26 has: a channel for streaming the fuel at lower temperature compared to the combustion air to outer side than the center rod and the inside thereof; and a space 23 defined by an inner wall of the fuel nozzle and a downstream side end face of the center rod and communicating with the air holes and the combustion chamber, wherein the downstream end of the center rod is arranged as covering at least a part of the air holes communicating with the space, and the opening area of the air holes communicating with the space changes due to a thermal expansion difference between the fuel nozzle and the center rod. <P>COPYRIGHT: (C)2013,JPO&INPIT |
