flame of a fuel / air premixer for a gas turbine combustor

摘要

PROBLEM TO BE SOLVED: To provide a fuel nozzle with active cooling regarding a fuel and air premixer for a gas turbine combustion system.;SOLUTION: This fuel nozzle includes an outer peripheral wall 11, a nozzle center body 12 concentrically disposed within the outer wall 11, and a fuel and air premixer 14. The fuel and air premixer 14 includes an air inlet 15, a fuel inlet 16, and a premixing passage 121 defined between the outer wall 11 and the center body 12. A gas fuel flow passage 23 is provided. A first cooling passage 32 is included within the center body 12, and a second cooling passage 43, 143 is formed between the center body 12 and the outer wall 11.;COPYRIGHT: (C)2010,JPO&INPIT