Fuel injector device

Patent metadata

Field	Value
Publication number	US-2016290238-A1
Application number	US-201615084177-A
Country	US
Kind code	A1
Filing date	Mar 29, 2016
Priority date	Mar 30, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

Disclosed is a fuel injector device having a body with a leading edge and a trailing edge and defining a streamwise direction from the leading edge to the trailing edge, the fuel injector device body having a first wall and a second wall opposite the first wall, each wall extending between and including the leading edge and the trailing edge and the walls conjoining each other at the leading edge and the trailing edge, each wall having a streamwise extent and a crosswise extent, the walls further enclosing an internal space, at least one fluid plenum being provided within the internal space, the fluid plenum at least at one of an upstream end and/or a downstream end being delimited by an internal wall structure, wherein at least one surface of the wall structure is an inclined surface which forms an angle with the streamwise direction which is smaller than or equal to a maximum angle, wherein the maximum angle is 60°.

First claim

1 . A fuel injector device comprising:
a body, said body having a leading edge and a trailing edge and defining a streamwise direction from the leading edge to the trailing edge, the fuel injector device body having a first wall and a second wall ( 104 ) opposite the first wall, each of said walls extending between and including the leading edge and the trailing edge and said walls conjoining each other at the leading edge and the trailing edge, each wall having a streamwise extent and a crosswise extent, said walls enclosing an internal space, and at least one fluid plenum being provided within the internal space, the fluid plenum at least at one of an upstream end and/or a downstream end being delimited by an internal wall structure, wherein at least one surface of said wall structure is an inclined surface which forms an angle with the streamwise direction which is smaller than or equal to a maximum angle, wherein said maximum angle is 60°.

2 . The fuel injector device according to claim 1 , wherein each of an upstream surface and a downstream surface of the internal wall structure is an inclined surface and forms an angle with the streamwise direction which is smaller than or equal to the maximum angle.

3 . The fuel injector device according to claim 1 , wherein at least two internal wall structures are provided in the internal space and each internal wall structure comprises:
at least one inclined surface, wherein at least the surfaces of all wall structures which point into an identical streamwise orientation are provided as inclined surfaces.

4 . The fuel injector device according to claim 1 , wherein the inclined surface comprises:
at least two inclined surface sections, wherein each inclined surface section forms an angle with the streamwise direction which is smaller than or equal to the maximum angle, and wherein the surface sections are inclined with respect to the streamwise direction in opposite senses.

5 . The fuel injector device according to claim 4 , wherein two surface sections which are inclined with respect to the streamwise direction in opposite senses in combination form a surface of a wall structure.

6 . The fuel injector device according to claim 5 , wherein the first and second surface sections meet each other and are joined by a transition surface, the transition surface is rounded.

7 . The fuel injector device according to claim 1 , wherein at least one of
a cooling air plenum, a carrier air plenum, a first fuel plenum, and/or a second fuel plenum is provided inside the internal space and is delimited at at least one streamwise end by an internal wall structure having an inclined surface.

8 . The fuel injector device according to claim 7 , comprising:
a cooling air plenum, the cooling air plenum being delimited at a downstream end by a first internal wall structure, a carrier air plenum, the carrier air plenum being delimited at an upstream end by the first internal wall structure and being delimited at a downstream end by a second internal wall structure, and a first fuel plenum, the first fuel plenum being delimited at an upstream end by the second internal wall structure, wherein the upstream surfaces of all internal wall structures and/or the downstream surfaces of all internal wall structures are inclined surfaces.

9 . The fuel injector device according to claim 8 , comprising: a second fuel plenum, wherein the first fuel plenum is delimited at a downstream end by a third internal wall structure and the second fuel plenum is delimited at an upstream end by the third internal wall structure,
wherein the upstream surfaces of all internal wall structures and/or the downstream surfaces of all internal wall structures are inclined surfaces.

10 . The fuel injector device according to claim 8 , wherein the at least one fuel plenum is enclosed by a fuel plenum shell, an upstream end of the fuel plenum shell being provided as an internal wall structure having an inclined surface, wherein the fuel plenum shell is provided within the internal space and is supported by struts, said struts connecting the fuel plenum shell and the first internal wall structure.

11 . The fuel injector device according to claim 1 , wherein the trailing edge undulates.

12 . The fuel injector device according to claim 1 , wherein it is a seamless one-piece device.

13 . The fuel injector device according to claim 1 , configured by additive manufacturing of selective laser melting and selective electron beam melting.

14 . A combustor, comprising:
a fuel injector device according to claim 1 .

15 . A gas turbine comprising:
a combustor according to claim 14 , wherein the gas turbine is a sequential combustion gas turbine engine and the combustor is a subsequent combustor arranged to be supplied with partly expanded flue gas from a turbine.

Assignees

• Ansaldo Energia Switzerland AG

Inventors

• Loeffel Kaspar
• Theuer Andre
• Biagioli Nico
• Stytsenko Alexey
• Mylnikov Sergey
• Baibuzenko Igor

Classifications

• F02C7/22 Primary

  Fuel supply systems · CPC title

• F23R3/20 Primary

  incorporating fuel injection means · CPC title

• F05D2250/184

  sinusoidal · CPC title

• F23C2900/07001

  Air swirling vanes incorporating fuel injectors · CPC title

• F23R3/04

  Air inlet arrangements · CPC title