Fuel nozzle for a gas turbine engine

Patent metadata

Field	Value
Publication number	US-11226102-B2
Application number	US-201815920993-A
Country	US
Kind code	B2
Filing date	Mar 14, 2018
Priority date	Mar 15, 2013
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A fuel nozzle for a combustor a gas turbine engine includes a flange with a first locator.

First claim

What is claimed is:

1. A combustor section for a gas turbine engine comprising:
a first fuel nozzle with a first flange having a first locator;
a second fuel nozzle with a second flange having a second locator;
each of the first flange and the second flange comprising a first aperture and a second aperture, wherein for each of the first flange and the second flange an x-axis intersects a flange center axis, the first aperture, and the second aperture and a y-axis intersects the flange center axis and is perpendicular to the x-axis;
each of the first flange and the second flange comprising a perimeter extending about the flange center axis, the perimeter of each of the respective first flange and second flange comprising at least a first side and a second side adjacent the first side and opposite the first side with respect to the y-axis, the first side comprising a first extended area projecting from the first side in a first direction away from the flange center axis of each of the respective first flange and second flange and the second side comprising a second extended area projecting from the second side in a second direction away from the flange center axis of each of the respective first flange and second flange, wherein the first locator is located in the first extended area of the first flange and only on the first side of the first flange and the second locator is located in the second extended area of the second flange and only on the second side of the second flange;

a diffuser case with a first fuel nozzle mount pad and a second fuel nozzle mount pad;
wherein the first fuel nozzle mount pad includes a third locator; wherein the second fuel nozzle mount pad includes a fourth locator;
wherein the first locator is indexed with the third locator;
wherein the second locator is indexed with the fourth locator;
wherein the third locator is different from the fourth locator to permit installation of the first fuel nozzle on the first fuel nozzle mount pad and to prevent installation of the second fuel nozzle on the first fuel nozzle mount pad.

2. The combustor section as recited in claim 1 , wherein said first locator extends from said first flange.

3. The combustor section as recited in claim 2 , wherein said first locator is a pin.

4. The combustor section as recited in claim 1 , wherein said third locator is a slot.

5. The combustor section as recited in claim 1 , wherein said first flange includes a first aperture and a second aperture.

6. The combustor section as recited in claim 1 , wherein the fourth locator permits installation of the second fuel nozzle on the second fuel nozzle mount pad and prevents installation of the first fuel nozzle on the second fuel nozzle mount pad.

7. The combustor section as recited in claim 1 , wherein the first fuel nozzle is a simplex fuel nozzle.

8. The combustor section as recited in claim 7 , wherein the second fuel nozzle is a simplex fuel nozzle.

9. The combustor section as recited in claim 7 , wherein the second fuel nozzle is a duplex fuel nozzle.

10. The combustor section as recited in claim 1 , wherein the first fuel nozzle is a duplex fuel nozzle.

11. The combustor section as recited in claim 10 , wherein the second fuel nozzle is a duplex fuel nozzle.

12. The combustor section of claim 1 , wherein each of the first fuel nozzle mount pad and the second fuel nozzle mount pad comprise a pad center axis, a nozzle aperture extending along the pad center axis, a pad perimeter surrounding and facing away from the pad center axis, and a pad mating surface extending between the nozzle aperture and the pad perimeter.

13. The combustor section as recited in claim 12 , wherein the third locator is a first slot formed through the pad perimeter and the pad mating surface of the first fuel nozzle mount pad, and wherein the fourth locator is a second slot formed through the pad perimeter and the pad mating surface of the second fuel nozzle mount pad.

14. The combustor section of claim 12 , wherein each of the first flange and the second flange comprises a nozzle support extending outward from each of the respective first flange and second flange along the flange center axis, wherein each of the first flange and the second flange comprises a flange mating surface extending between the nozzle support and the perimeter of each of the respective first flange and second flange, the first locator and the second locator projecting outward from the respective flange mating surface of the respective first flange and second flange, and wherein the flange mating surface of each of the first flange and the second flange is configured to mate with the respective pad mating surface of the respective first fuel nozzle mount pad and second fuel nozzle mount pad.

15. The combustor section of claim 1 , wherein each of the first flange and second flange comprises a first pin aperture in the first extended area and a second pin aperture in the second extended area and wherein the first flange comprises a first pin fitted in the first pin aperture forming the first locator and the second flange comprises a second pin fitted in the second pin aperture forming the second locator.

16. A combustor section for a gas turbine engine comprising:
a simplex fuel nozzle with a first flange having a first locator;
a duplex fuel nozzle with a second flange having a second locator;
a diffuser case with a simplex fuel nozzle mount pad and a duplex fuel nozzle mount pad;
wherein the simplex fuel nozzle mount pad includes a third locator;
wherein the duplex fuel nozzle mount pad includes a fourth locator;
wherein the first locator is indexed with the third locator;
wherein the second locator is indexed with the fourth locator;
wherein the third locator is different from the fourth locator to permit installation of the simplex fuel nozzle on the simplex fuel nozzle mount pad and to prevent installation of the duplex fuel nozzle on the simplex fuel nozzle mount pad;
wherein each of the first flange and the second flange comprise a first aperture and a second aperture, wherein for each of the first flange and the second flange an x-axis intersects a flange center axis, the first aperture, and the second aperture and a y-axis intersects the flange center axis and is perpendicular to the x-axis; and
wherein each of the first flange and the second flange comprise a perimeter extending about the flange center axis, the perimeter of each of the respective first flange and second flange comprising at least a first side and a second side adjacent the first side and opposite the first side with respect to the y-axis, the first side comprising a first extended area projecting from the first side in a first direction away from the flange center axis of each of the respective first flange and second flange and the second side comprising a second extended area projecting from the second side in a second direction away from the flange center axis of each of the respective first flange and second flange, wherein the first locator is located in the first extended area of the first flange and only on the first side of the first flange and the second locator is located in the second extended area of the second flange and only on the second side of the second flange.

Assignees

• United Technologies Corp
• Raytheon Tech Corp

Inventors

• Low Kevin J
• Wong Joey
• Niggemeier Chris J

Classifications

• F05D2220/32

  in gas turbines · CPC title

• F23D11/10

  the spraying being induced by a gaseous medium, e.g. water vapour · CPC title

• F02C3/00

  Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C5/00) · CPC title

• F05D2240/35

  Combustors or associated equipment · CPC title

• F23R3/283 Primary

  Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances · CPC title