Burner arrangement for a combustion system for combusting liquid fuels and method for operating such a burner arrangement

• US 20100316966A1
• Filed: 06/14/2010
• Published: 12/16/2010
• Est. Priority Date: 06/16/2009
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Wörz, Ulrich, Böttcher, Andreas, Krieger, Tobias
• Application Number:
  US12/814,707
• Publication Number:
  US 20100316966A1
• Time in Patent Office: Days
• US Class Current: 431/12
• CPC Class Codes: F23R 3/286 having fuel-air premixing devices F23R3/30 takes precedence
• CPC Class Codes: F23R 3/343 Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion ignition in gas-turbine plants F02C7/264; pilot flame igniters F23Q9/00

Abstract

A burner arrangement for a combustion system for combusting liquid fuels including a burner hub, at least one air supply channel and at least one fuel supply channel for each fuel type is provided. The at least one fuel supply channel is embodied at least partially in the burner hub, with a flow divider arranged in at least one fuel supply channel, which is distanced from the wall of the fuel supply channel so that an interspace associated with the flow path of the fuel flowing through the fuel supply channel is formed between the wall of the fuel supply channel and the flow divider. A method for operating such a burner arrangement is also provided.

Claims

1-10. -10. (canceled)

11. A burner arrangement for a combustion system for combusting liquid fuels, comprising:

a burner hub;

an air supply channel; and

a fuel supply channel for each type of fuel,

wherein the fuel supply channel is at least partially embodied in the burner hub,

wherein a flow divider is arranged in the fuel supply channel, and

wherein the flow divider is distanced from a wall of the fuel supply channel so that an interspace associated with a flow path of a fuel flowing through the fuel supply channel is formed between the wall and the flow divider.

12. The burner arrangement as claimed in claim 11, wherein the flow divider is formed by a sleeve introduced into the fuel supply channel.

13. The burner arrangement as claimed in claim 11, wherein the flow divider protrudes at least partially into the annular channel.

14. The burner arrangement as claimed in claim 11, wherein the flow divider comprises a flow means including a flow-through opening, and a disk including a corresponding flow-through opening.

15. The burner arrangement as claimed in claim 14, wherein the flow means is a pipe.

16. The burner arrangement as claimed in claim 15, wherein a central bore in a center of the flow divider is provided as the flow-through opening.

17. The burner arrangement as claimed in claim 14, wherein the disk is provided on a first end of the flow-through means, viewed in the flow direction.

18. The burner arrangement as claimed in claim 17, wherein the disk is clamped to the wall in a form-fit manner.

19. The burner arrangement as claimed in claim 17, wherein the disk rests on a positioning projection.

20. The burner arrangement as claimed in claim 14, wherein the disk includes a larger first diameter than a second diameter of the flow-through means.

21. The burner arrangement as claimed in claim 14, wherein the flow divider in the disk includes a bore.

22. The burner arrangement as claimed in claim 21, wherein the disk includes a plurality of bores, which are essentially equally distributed over the periphery.

23. A method for operating a burner arrangement, comprising:

routing fuel during operation through the fuel supply channel,

wherein a main part of a fuel flows through a flow through-opening of the flow divider and a minimal part of the fuel flows through an interspace of the flow divider,

wherein the burner arrangement comprises;

a burner hub,

an air supply channel, and

a fuel supply channel for each type of fuel,

wherein the fuel supply channel is at least partially embodied in the burner hub,

wherein a flow divider is arranged in the fuel supply channel, and

wherein the flow divider is distanced from a wall of the fuel supply channel so that an interspace associated with a flow path of a fuel flowing through the fuel supply channel is formed between the wall and the flow divider.

24. The method as claimed in claim 23, wherein the flow divider is formed by a sleeve introduced into the fuel supply channel.

25. The method as claimed in claim 23, wherein the flow divider protrudes at least partially into the annular channel.

26. The method as claimed in claim 23, wherein the flow divider comprises a flow means including a flow-through opening, and a disk including a corresponding flow-through opening.

27. The method as claimed in claim 26, wherein the flow means is a pipe.

28. The method as claimed in claim 27, wherein a central bore in a center of the flow divider is provided as the flow-through opening.

29. The method as claimed in claim 26, wherein the disk is provided on a first end of the flow-through means, viewed in the flow direction.

30. The method as claimed in claim 26, wherein the disk includes a larger first diameter than a second diameter of the flow-through means.