LEAN DIRECT INJECTION DIFFUSION CHIP AND RELATED METHOD

摘要

PROBLEM TO BE SOLVED: To provide a lean direct injection nozzle for a gas turbine combustor to achieve low amount of emission.;SOLUTION: A center body is located within a first radially outer tube, and the center body includes a second radially intermediate tube 44 for supplying fuel to a reaction zone and a third radially inner tube 54 for supplying air to the reaction zone. The second intermediate tube 44 has a first outlet end closed by a first end wall 56 that is formed with a plurality of substantially parallel, axially-oriented air outlet passages 60 for the additional air in the third radially inner tube, and each air outlet passage has a respective plurality of associated fuel outlet passages 58 in the first end wall 56 for the fuel in the second radially intermediate tube 44. The respective plurality of associated fuel outlet passages 58 have non-parallel center axes that intersect a center axis of the respective air outlet passage to locally mix fuel and air outflowing from the center body.;COPYRIGHT: (C)2010,JPO&INPIT