FUEL NOZZLE END COVER, FUEL NOZZLE, AND PROCESS OF FABRICATING A FUEL NOZZLE END COVER

• US 20130205789A1
• Filed: 02/09/2012
• Published: 08/15/2013
• Est. Priority Date: 02/09/2012
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: KOTTILINGAM, Srikanth Chandrudu, TOLLISON, Brian Lee, OBEIRNE, John Greg, JOHNSTON, Bill Damon, NOWAK, Daniel Anthony, MONGA, Amit
• Application Number:
  US13/369,537
• Publication Number:
  US 20130205789A1
• Time in Patent Office: Days
• US Class Current: 60/740
• CPC Class Codes: B23K 15/0046 Welding
• CPC Class Codes: B23K 20/12 the heat being generated by friction; Friction welding
• CPC Class Codes: B23K 2101/001 Turbines
• CPC Class Codes: B23K 2103/05 Stainless steel
• CPC Class Codes: B23K 2103/18 Dissimilar materials
• CPC Class Codes: B23K 2103/26 Alloys of Nickel and Cobalt and Chromium
• CPC Class Codes: B23K 26/21 by welding
• CPC Class Codes: B23K 9/167 and of a non-consumable electrode
• CPC Class Codes: B23K 9/173 and of a consumable electrode
• CPC Class Codes: F23D 2213/00 Burner manufacture specifications
• CPC Class Codes: F23R 3/283 Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances
• CPC Class Codes: Y10T 29/49323 Assembling fluid flow directing devices, e.g., stators, diaphragms, nozzles

Abstract

Disclosed is a fuel nozzle end cover, a fuel nozzle and a process of fabricating a fuel nozzle end cover. The fuel nozzle end cover includes a base material and one or more features extending from the base material into a cavity of the fuel nozzle end cover. The one or more features are secured to the base material by a process selected from the group consisting of beam welding, friction welding, gas tungsten arc welding, gas metal arc welding, and combinations thereof. The fuel nozzle includes a fuel nozzle insert and a fuel nozzle end cover. The process of fabricating the fuel nozzle end cover includes providing a base material and securing one or more features to the base material by a welding process selected from the group consisting of beam welding, friction welding, gas tungsten arc welding, gas metal arc welding, and combinations thereof.

Claims

1. A fuel nozzle end cover, comprising:

a base material; and

one or more features extending from the base material into a cavity of the fuel nozzle end cover;

wherein the one or more features are secured to the base material by a process selected from the group consisting of beam welding, friction welding, gas tungsten arc welding, gas metal arc welding, and combinations thereof.

2. The fuel nozzle end cover of claim 1, wherein the one or more features are machined to a predetermined geometry.

3. The fuel nozzle end cover of claim 1, wherein the one or more features are tungsten inert gas welded to the base material.

4. The fuel nozzle end cover of claim 1, wherein the one or more features are electron beam welded to the base material.

5. The fuel nozzle end cover of claim 1, wherein the one or more features have a different composition than the base material.

6. The fuel nozzle end cover of claim 1, wherein the one or more features have a different ductility than the base material.

7. The fuel nozzle end cover of claim 1, wherein at least one of the one or more features has a stepped geometry.

8. The fuel nozzle end cover of claim 1, wherein at least one of the one or more features includes a first surface extending from the base material, a second surface extending in a direction substantially perpendicular to the first surface, a third surface extending in a direction substantially perpendicular to the second surface, a fourth surface extending in a direction substantially perpendicular to the third surface, and a fifth surface extending in a direction substantially perpendicular to the fourth surface.

9. The fuel nozzle end cover of claim 1, wherein at least one of the one or more features has a geometry that is not stepped.

10. The fuel nozzle end cover of claim 1, wherein at least one of the one or more features has a composition, by weight, of about 10% Ni, about 20% Cr, about 15% W, up to about 3% Fe, about 1.5% Mn, up to about 0.4% Si, about 0.10% C, incidental impurities, and balance Co.

11. The fuel nozzle end cover of claim 1, wherein at least one of the one or more features has a composition, by weight, of about 0.005% C, 0.150% Mn, about 0.005% P, about 0.002% S, about 0.03% Si, about 15.50% Cr, about 16.0% Mo, about 3.50% W, about 0.15% V, about 0.10% Co, about 6.00% Fe, incidental impurities, and balance Ni.

12. The fuel nozzle end cover of claim 1, wherein at least one of the one or more features has a composition, by weight, of about 0.015% C, about 0.48% Si, about 20% Cr, about 1.85% Mn, about 0.15% P, up to about 0.20% Cu, about 0.10% S, up to about 0.60% N, up to about 0.50% Mo, about 10.1% Ni, incidental impurities, and balance Fe.

13. The fuel nozzle end cover of claim 1, wherein the one or more features removably secure an insert to the end cover.

14. The fuel nozzle end cover of claim 1, wherein the base material is stainless steel.

15. A fuel nozzle, comprising:

a fuel nozzle insert; and

a fuel nozzle end cover corresponding to the fuel nozzle insert, the fuel nozzle end cover comprising;

a base material; and

one or more features extending from the base material into a cavity of the fuel nozzle end cover;

wherein the one or more features are secured to the base material by a process selected from the group consisting of beam welding, friction welding, gas tungsten arc welding, gas metal arc welding, and combinations thereof.

16. A process of fabricating a fuel nozzle end cover, the process comprising:

providing a base material of the fuel nozzle end cover; and

securing one or more features to the base material by a welding process selected from the group consisting of beam welding, friction welding, gas tungsten arc welding, gas metal arc welding, and combinations thereof.

17. The process of claim 16, further comprising machining at least one of the one or more features to a predetermined geometry.

18. The process of claim 16, wherein the securing is by tungsten inert gas welding.

19. The process of claim 16, wherein the securing is by electron beam welding.

20. The process of claim 16, further comprising removably securing a fuel nozzle insert to the fuel nozzle end cover.