| 摘要 |
PROBLEM TO BE SOLVED: To prevent flame-holding in a premixer with respect to an air fuel mixer for a combustor of a gas turbine engine. SOLUTION: The premixer for a gas turbine combustor (14) includes a first passage (4) for injecting high-reactive fuel (10) and second passages (6, 20) for injecting inert gas or low-reactive fuel (8) or mixture of both. The second passages (6, 20) form a layer of the inert gas or the low-reactive fuel (8) or mixture of both, and blankets a layer of the high-reactive fuel (10). Another premixer includes a plurality of nozzles (16), and each nozzle includes a pair of concentric tubes (18, 20). The air of concentric tubes (18, 20) includes a first tube (18) for injecting the high-reactive fuel (22) and a second tube (20) which surrounds the first tube (18), supplies the inert gas or low-reactive fuel (24) or mixture of both, and is composed to blanket a layer of the high-reactive fuel (22). COPYRIGHT: (C)2011,JPO&INPIT
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