Fuel nozzle assembly

A fuel nozzle assembly comprising:

• an outer nozzle body having a first end and a second end;
• at least one inner nozzle tube having a first end and a second end;
• one of said nozzle body or nozzle tube including a fuel plenum and a fuel passage extending therefrom;
• the other of said nozzle body or nozzle tube including a fuel injection hole movably aligned with said fuel passage to form a fuel flow path therebetween at an interface between said nozzle body and said at least one nozzle tube, said nozzle body and said at least one nozzle tube fixed against relative movement at respective said first ends, including sealing members located adjacent said fuel passage and said fuel injection hole for isolating said fuel flow path.

A fuel nozzle assembly comprising:

• an outer nozzle body having a first end and a second end;
• at least one inner nozzle tube having a first end and a second end;
• one of said nozzle body or nozzle tube including a fuel plenum and a fuel passage extending therefrom;
• the other of said nozzle body or nozzle tube including fuel injection hole movably aligned with said fuel passage to form a fuel flow path therebetween at an interface between said nozzle body and said at least one nozzle tube, said nozzle body and said at least one nozzle tube fixed against relative movement at respective said first ends, wherein said interface includes an inner circumferential face of said nozzle body, a corresponding outer circumferential face of said at least one nozzle tube and sealing members for isolating said fuel flow path.

A fuel nozzle assembly comprising:

• an outer nozzle body having a first end and a second end;
• at least one inner nozzle tube having a first end and a second end;
• one of said nozzle body or nozzle tube including a fuel plenum and a fuel passage extending therefrom;
• the other of said nozzle body or nozzle tube including a fuel injection hole movably aligned with said fuel passage to form a fuel flow path therebetween at an interface between said nozzle body and said at least one nozzle tube, said nozzle body and said at least one nozzle tube fixed against relative movement at respective said first ends, wherein said interface includes a fuel pocket on a circumferential face of one of said nozzle body or said at least one nozzle tube interposed and in fluid communication with said fuel passage and said fuel injection hole.

A method of passively extinguishing the fuel feed to a fuel nozzle, including an outer nozzle body having a first end and a second end, at least one inner nozzle tube having a first end and a second end, one of said nozzle body or said nozzle tube including a fuel plenum and a fuel passage extending therefrom, the other of said nozzle body or nozzle tube including a fuel injection hole adjacent said fuel passage to form a fuel flow path therebetween at an interface between said body and said tube;

• the method comprising:
• fixing said nozzle body and said nozzle tube against relative movement at said first ends,
• allowing said nozzle tube to move relative to said nozzle body in response to a flame entering said nozzle tube;
• and
• closing said fuel flow path at said interface to extinguish a flame.