| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein mostly in the configuration of a nozzle, an oil feed pipe is installed in the interior of a water feed pipe, the water feed pipe and the oil feed pipe are both connected to the tip part, so that when a combustor operates, eccentricity is caused between the oil feed pipe and the water feed pipe due to a thermal load difference among a combustion dynamics, the oil feed pipe and the water feed pipe, and further the oil feed pipe is affected by oscillation frequency in the operating state of the combustor to cause a high vibration stress so that abrasion of the oil feed pipe is increased and the effective life of the oil feed pipe is lowered. SOLUTION: This fuel nozzle 10 includes the tip part 16 and a tube part 14. The tube part 14 connected to the tip part 16 at a first end 42 includes an outer tube 22 having a tube axial line 24 and connected to the tip part 16 and an inner tube 20 disposed at least partially in the interior of the outer tube 22 and connected to the tip part 16. The inner tube 20 includes one or more flexible parts capable of reducing stress in the fuel nozzle 10. The fuel nozzle 10 includes the tip part 16, a base 12, and the tube part 14 disposed between them, connected to the tip part 16 at the first end 42 and connected to the base 12 at a second end 44. One or more ribs 58 are disposed on the outer tube 22, and extended outward in the radial direction from the outer surface 60 of the outer tube 22. COPYRIGHT: (C)2009,JPO&INPIT |
