SYSTEM, METHOD, AND APPARATUS FOR PROVIDING SECONDARY FUEL NOZZLE ASSEMBLY

摘要

PROBLEM TO BE SOLVED: To provide a secondary fuel nozzle assembly preventing a failure due to thermal expansion in a combustor for a gas turbine. SOLUTION: The secondary fuel nozzle assembly 100 includes: a central portion 102 for forming a proximal end 108, a distal end 110, and a central passage 152, and including a coil tube 150 extending from the proximal end 108 to the distal end 110 through the central passage 152; a flange 106 having a main secondary fuel orifice in fluid communication with the central passage 152 at the proximal end 108 and a pilot orifice 202 in fluid communication with the coil tube 150 at the proximal end 108; and a tip portion 104 having a proximal end 108 and a distal end 110 and forming a passage passing through the chip part 104. The passage includes the distal end 110 of the coil tube 150 and the chip part 104 in fluid communication with an orifice formed at the distal end 110 of the chip part 104. The coil tube 150 effectively reduces a failure caused by thermal stress. COPYRIGHT: (C)2010,JPO&INPIT