Flow restriction device for a fuel nozzle assembly

• US 20050274827A1
• Filed: 06/14/2004
• Published: 12/15/2005
• Est. Priority Date: 06/14/2004
• Status: Abandoned Application

• Current Assignee: Power Systems Mfg. LLC (Hanwha Corporation)
• Original Assignee: Power Systems Mfg. LLC (Hanwha Corporation)
• Inventors: Henriquez, John
• Application Number:
  US10/867,294
• Publication Number:
  US 20050274827A1
• Time in Patent Office: Days
• US Class Current: 239/533.200
• CPC Class Codes: F23D 11/36 Details , e.g. burner cooling means, noise reduction means
• CPC Class Codes: F23D 2214/00 Cooling
• CPC Class Codes: F23D 2900/00003 Fuel or fuel-air mixtures flow distribution devices upstream of the outlet
• CPC Class Codes: F23D 2900/14004 with radially extending gas distribution spokes
• CPC Class Codes: F23R 3/286 having fuel-air premixing devices F23R3/30 takes precedence

Abstract

The present invention discloses a means for restricting a flow of fuel to a fuel nozzle assembly for a gas turbine combustor such that the fuel nozzle assembly can be manufactured to accommodate a variety of engine configurations and flow conditions. Multiple embodiments of the present invention are disclosed with each embodiment generally directed towards a nozzle located generally along the centerline of a two-stage combustor.

Claims

1. A fuel nozzle assembly for a gas turbine combustor comprising:

an elongated housing having a first end and a second end in spaced relation and a first passage located proximate said first end;

at least one first injector device extending radially outward from said elongated housing and in fluid communication with said first passage, said at least one first injector device having a plurality of first holes;

an end plate fixed to said elongated housing proximate said second end;

a base fixed to said elongated housing proximate said first end, said base having a first inlet in fluid communication with said elongated housing first passage and said first injector device; and

,

wherein said first inlet contains a means for restricting a flow of fuel to said elongated housing first passage.

2. The fuel nozzle assembly of claim 1 wherein said at least one first injector device comprises a plurality of pegs.

3. The fuel nozzle assembly of claim 1 wherein said at least one first injector device comprises a plurality of axially extending fins.

4. The fuel nozzle assembly of claim 1 wherein said at least one first injector device comprises a generally annular ring extending circumferentially about said elongated housing.

5. The fuel nozzle assembly of claim 1 wherein said at least one first injector device injects fuel into a surrounding stream of air.

6. The fuel nozzle assembly of claim 1 wherein said end plate has a plurality of second holes.

7. The fuel nozzle assembly of claim 1 wherein said means for restricting a flow of fuel to said elongated housing first passage comprises a plate fixed to said first inlet, said plate having at least one third hole.

8. A fuel nozzle assembly for a gas turbine combustor comprising:

an elongated housing having a first end and a second end in spaced relation, a first passage located proximate said first end, and a second passage located radially outward of said first passage;

at least one first injector device extending radially outward from said elongated housing and in fluid communication with said first passage, said at least one first injector device having a plurality of first holes;

at least one second injector device located along said elongated housing and in fluid communication with said second passage, said at least one second injector device having a plurality of fourth holes;

an end plate fixed to said elongated housing proximate said second end; and

,

a base fixed to said elongated housing proximate said first end, said base having a first inlet in fluid communication with said elongated housing first passage and said first injector device, and a second inlet in fluid communication with said elongated housing second passage and said second injector device;

wherein said first inlet contains a means for restricting a flow of fuel to said elongated housing first passage.

9. The fuel nozzle assembly of claim 8 wherein said at least one first injector device comprises a plurality of pegs.

10. The fuel nozzle assembly of claim 8 wherein said at least one first injector device comprises a plurality of axially extending fins.

11. The fuel nozzle assembly of claim 8 wherein said at least one first injector device comprises a generally annular ring extending circumferentially about said elongated housing.

12. The fuel nozzle assembly of claim 8 wherein said at least one first injector device injects a fuel into a surrounding stream of air.

13. The fuel nozzle assembly of claim 8 wherein said at least one second injector device injects either a fuel or air into a surrounding stream of air.

14. The fuel nozzle assembly of claim 8 wherein said end plate has a plurality of second holes.

15. The fuel nozzle assembly of claim 14 wherein air is directed through a third passage and to said plurality of second holes to cool said end plate.

16. The fuel nozzle assembly of claim 8 wherein said means for restricting a flow of fuel to said elongated housing first passage comprises a plate fixed to said first inlet, said plate having at least one third hole.

17. A fuel nozzle assembly for a gas turbine combustor comprising:

an elongated housing having a first end and a second end in spaced relation, a first passage located proximate said first end, a second passage located radially outward of said first passage, and a third passage located proximate said second end and in fluid communication with said first passage;

at least one first injector device extending radially outward from said elongated housing and in fluid communication with said first passage, said at least one first injector device having a plurality of first holes;

an end plate fixed to said elongated housing proximate said second end;

at least one second injector device located proximate said end plate and in fluid communication with said second passage, said at least one second injector device having a plurality of fourth holes; and

,

a base fixed to said elongated housing proximate said first end, said base having a first inlet in fluid communication with said elongated housing first passage and said first injector device, and a second inlet in fluid communication with said elongated housing second passage and said second injector device;

wherein said first inlet contains a means for restricting a flow of fuel to said elongated housing.

18. The fuel nozzle assembly of claim 17 wherein said at least one first injector device comprises a plurality of pegs.

19. The fuel nozzle assembly of claim 17 wherein said at least one first injector device comprises a plurality of axially extending fins.

20. The fuel nozzle assembly of claim 17 wherein said at least one first injector device comprises a generally annular ring extending circumferentially about said elongated housing.

21. The fuel nozzle assembly of claim 17 wherein said at least one first injector device injects a fuel into a surrounding stream of air.

22. The fuel nozzle assembly of claim 17 wherein said at least one second injector device injects either a fuel or air towards a combustion chamber.

23. The fuel nozzle assembly of claim 17 wherein said end plate has a plurality of second holes that inject a mixture of a fuel and air towards a combustion chamber.

24. The fuel nozzle assembly of claim 17 wherein said means for restricting a flow of a fuel to said elongated housing comprises a plate fixed to said first inlet, said plate having at least one third hole.