Method and apparatus for swaged liquid injector spoke

Patent metadata

Field	Value
Publication number	US-9296038-B2
Application number	US-201213560192-A
Country	US
Kind code	B2
Filing date	Jul 27, 2012
Priority date	Dec 29, 2011
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A liquid fuel injection spoke for a gas turbine engine. The liquid fuel injection spoke may include an inlet end and an outlet end. The liquid fuel injection spoke may further include a head located at the inlet end and a stem extending along a longitudinal axis from the head to the outlet end. The stem may define a fluid passageway therein. The head may include a cavity with an inner wall. The inner wall may include an annular protrusion.

First claim

What is claimed is:

1. A liquid fuel injection spoke for a gas turbine engine, comprising:
an inlet end;
an outlet end;
a head located at the inlet end; and
a stem extending along a longitudinal axis from the head to the outlet end, the stem having a fluid passageway therein, wherein
the head includes a cavity extending from a proximal end of the head to a distal end of the head, the distal end of the head being adjacent to the stem,
the cavity has an inner wall including an annular protrusion disposed between and axially separated from the proximal end and the distal end, and
the cavity forms an inlet to the fluid passageway.

2. The liquid fuel injection spoke of claim 1 , wherein the annular protrusion includes a first tapered surface inclined relative to the longitudinal axis.

3. The liquid fuel injection spoke of claim 2 , wherein the annular protrusion further includes a flat longitudinally extending surface between the first tapered surface and a second tapered surface, the second tapered surface mirroring the first tapered surface.

4. The liquid fuel injection spoke of claim 1 , wherein the cavity is generally cylindrical in shape and radially larger than the fluid passageway.

5. The liquid fuel injection spoke of claim 1 , wherein the head includes an outer wall, the outer wall including a recess therein.

6. The liquid fuel injection spoke of claim 5 , wherein the annular protrusion is positioned proximally of the recess.

7. The liquid fuel injection spoke of claim 1 , wherein the head is generally cylindrical.

8. The liquid fuel injection spoke of claim 1 , wherein an outer diameter of the head is larger than an outer diameter of the stem.

9. The liquid fuel injection spoke of claim 1 , wherein the annular protrusion is positioned on the inner wall at a location closer to the proximal end than the distal end.

10. A fuel injector system, comprising:
a liquid fuel injection spoke defining a fluid passageway therethrough, the liquid fuel injection spoke including:
an inlet end;
an outlet end;
a stem extending to the outlet end; and
a head located at the inlet end, the head including an inner wall extending from a proximal end to a distal end disposed adjacent the stem, the inner wall having an annular protrusion disposed between and axially separated from the proximal end and the distal end.

11. The fuel injector system of claim 10 , further including:
a fluid manifold in communication with the fluid passageway, the fluid manifold including a recess therein configured to receive the annular protrusion therein.

12. The fuel injector system of claim 11 , wherein the liquid fuel injection spoke and fluid manifold are bonded via molecular diffusion adjoining the annular protrusion within the recess.

13. The fuel injector system of claim 10 , wherein the stem extends along a longitudinal axis and defines the fluid passageway therein, the head includes a generally cylindrical cavity, and wherein a diameter of the cavity is larger than a diameter of the fluid passageway.

14. The fuel injector system of claim 10 , wherein the annular protrusion includes a first tapered surface inclined relative to a longitudinal axis and a flat longitudinally extending surface between the first tapered surface and a second tapered surface, the second tapered surface mirroring the first tapered surface.

Assignees

• Krichever Alexander Ilich
• Abreu Mario Eugene
• Turoff Norm
• Lockyer John Frederick
• Twardochleb Christopher Zdzislaw
• Stansel David Marc
• Solar Turbines Inc

Inventors

• Krichever Alexander Ilich
• Abreu Mario Eugene
• Turoff Norm
• Lockyer John Frederick
• Twardochleb Christopher Zdzislaw
• Stansel David Marc

Classifications

• F02C7/22

  Fuel supply systems · CPC title

• F23R3/286

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

• B21K25/00 Primary

  Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components (uniting by interference- or press-fitting B23P11/02, B21K19/02) · CPC title

• F23R3/14

  by using swirl vanes · CPC title

• F23R2900/00005

  Preventing fatigue failures or reducing mechanical stress in gas turbine components · CPC title