Burner of a gas turbine with a lobed shape vortex generator

Patent metadata

Field	Value
Publication number	US-10215416-B2
Application number	US-201514950759-A
Country	US
Kind code	B2
Filing date	Nov 24, 2015
Priority date	Nov 26, 2014
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

The burner of a gas turbine has a duct, a vortex generator extending in the duct and including a leading edge and a trailing edge. The trailing edge has a first order lobed shape. The first order lobed shape is defined by a second order lobed shape. Preferably a nozzle for fuel injection is connected to the vortex generator and the second order lobed shape is only provided at the nozzles.

First claim

The invention claimed is:

1. A burner of a gas turbine comprising:
a duct;
a vortex generator extending in the duct and comprising a leading edge and a trailing edge, wherein the trailing edge has a first lobed shape; and
an additional wall that extends across a surface between the leading edge and the trailing edge of the vortex generator,
wherein the first lobed shape is defined by a second lobed shape.

2. The burner of claim 1 , wherein the vortex generator further comprises at least one nozzle for fuel injection connected to the vortex generator,
wherein the second lobed shape is provided at a portion of the vortex generator that connects to the at least one nozzle.

3. The burner of claim 1 , wherein the additional wall has a lobed shape connected to the vortex generator.

4. The burner of claim 3 , wherein the additional wall is connected to the vortex generator at the at least one nozzle.

5. The burner of claim 4 , wherein the additional wall is connected to the at least one nozzle.

6. The burner of claim 4 , wherein the vortex generator has a second wall between the leading edge and the trailing edge, wherein the additional wall is connected to the second wall.

7. The burner of claim 3 , wherein the additional wall has the first lobed shape and/or the second lobed shape.

8. The burner of claim 3 , wherein the additional wall has at least one lobed shape different from the first and/or second lobed shape.

9. The burner of claim 1 , comprising at least three vortex generators having one end connected together at a connection position and another end connected to the duct.

10. The burner of claim 9 , comprising a nozzle at the connection position.

11. The burner of claim 2 , wherein the at least one nozzle is provided at the trailing edge.

12. The burner of claim 2 , wherein the vortex generator has a second wall between the leading edge and the trailing edge, wherein the at least one nozzle is provided on the second wall.

13. The burner of claim 2 , wherein the second lobed shape of the trailing edge is at least partly defined by at least a third lobed shape; wherein the at least third lobed shape of the trailing edge is provided at the at least one nozzle.

14. The burner of claim 2 , wherein the additional wall has a plurality of lobed shapes, wherein one of the plurality of lobed shapes is formed at the at least one nozzle.

15. The burner of claim 2 , comprising a plurality of nozzles, wherein the plurality of nozzles have different positions over a transversal axis.

Assignees

• Ansaldo Energia Switzerland AG

Inventors

• Dusing Michael
• Poyyapakkam Madhavan Narasimhan
• Wysocki Stefan

Classifications

• F23R3/20

  incorporating fuel injection means · CPC title

• F23R3/14

  by using swirl vanes · CPC title

• F23C2900/07001

  Air swirling vanes incorporating fuel injectors · CPC title

• F23R3/286 Primary

  having fuel-air premixing devices (F23R3/30 takes precedence) · CPC title

• F23R3/12

  inducing a vortex · CPC title