Combustor assembly with chutes

Patent metadata

Field	Value
Publication number	US-10024537-B2
Application number	US-201514734814-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Jun 17, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A combustor for use in a gas turbine engine includes a chute and a combustion liner defining a combustion chamber and a chute-receiving aperture that extends through the combustion liner. The chute extends through the chute-receiving aperture of the combustion liner and defines a passageway sized to convey air from an environment outside the combustion chamber through the combustion liner into the combustion chamber.

First claim

What is claimed is:

1. A combustor for use in a gas turbine engine, the combustor comprising:
a combustion liner that defines a combustion chamber, the combustion liner including an outer liner surface facing away from the combustion chamber, an inner liner surface facing toward the combustion chamber, and a chute-receiving aperture that extends through the outer liner surface and the inner liner surface, and
a chute that extends through the chute-receiving aperture of the combustion liner and defines a passageway sized to convey air from an environment outside the combustion chamber through the combustion liner into the combustion chamber,
wherein the chute includes a chute body that extends through the chute-receiving aperture and defines the passageway, a flared head located outside of the combustion chamber that extends outwardly from the chute body away from the passageway so that the flared head is sized to block movement of the chute through the combustion liner into the combustion chamber, and a locating shoulder located inside of the combustion chamber that extends outwardly from the chute body away from the passageway so that the locating shoulder is sized to block movement of the chute through the combustion liner away from the combustion chamber,
wherein the combustion liner includes a plurality of cooling holes that extend through the combustion liner and that are arranged around the chute-receiving aperture and the locating shoulder is formed to include a plurality of cooling scallops arranged to face away from the chute body to provide a flow path for the air to flow from the environment outside of the combustion chamber through the plurality of cooling holes into the combustion chamber.

2. The combustor of claim 1 , further comprising a retention washer located outside of the combustion chamber and coupled to the chute body, wherein the retention washer extends outwardly from the chute body away from the passageway along the outer liner surface to block movement of the chute through the combustion liner into the combustion chamber.

3. The combustor of claim 2 , wherein the retention washer is coupled to the chute body without welding.

4. The combustor of claim 2 , wherein the retention washer is formed to include a plurality of cooling channels arranged to face the outer liner surface of the combustion liner that extend through the retention washer to provide a flow path for the air to flow from the outer liner surface through the plurality of cooling channels and into the plurality of cooling holes arranged around the chute-receiving aperture.

5. The combustor of claim 2 , wherein the retention washer is formed to include a central opening, the central opening is aligned with the chute-receiving aperture, and the chute extends through the central opening.

6. The combustor claim 1 , wherein the flared head is frustoconical.

7. A combustor for use in a gas turbine engine, the combustor comprising:
a combustion liner that defines a combustion chamber, the combustion liner including an outer liner surface facing away from the combustion chamber, an inner liner surface facing toward the combustion chamber, and a chute-receiving aperture that extends through the outer liner surface and the inner liner surface,
a chute that extends through the chute-receiving aperture of the combustion liner and defines a passageway sized to convey air from an environment outside the combustion chamber through the combustion liner into the combustion chamber, and
wherein the chute includes a chute body that extends through the chute-receiving aperture and defines the passageway, a flared head located outside of the combustion chamber that extends outwardly from the chute body away from the passageway so that the flared head is sized to block movement of the chute through the combustion liner into the combustion chamber, and a locating shoulder located inside of the combustion chamber that extends outwardly from the chute body away from the passageway so that the locating shoulder is sized to block movement of the chute through the combustion liner away from the combustion chamber,
a retention washer located outside of the combustion chamber and coupled to the chute body, wherein the retention washer extends outwardly from the chute body away from the passageway along the outer liner surface to block movement of the chute through the combustion liner into the combustion chamber,
wherein the retention washer is formed to include a central opening, an outer radial surface facing away from the central opening, an inner radial surface facing the central opening, a bottom surface extending between and interconnecting the inner and outer radial surfaces, a top surface spaced apart from the bottom surface, and a chamfered surface that extends between the inner radial surface and the top surface and the flared head extends along the chamfered surface.

8. A combustor for use in a gas turbine engine, the combustor comprising:
a combustion liner that defines a combustion chamber, the combustion liner including an outer liner surface facing away from the combustion chamber, an inner liner surface facing toward the combustion chamber, a chute-receiving aperture that extends through the combustion liner, and a plurality of cooling holes that extend through the combustion liner arranged around the chute-receiving aperture,
a chute including a chute body and a locating shoulder, the chute body extending through the chute-receiving aperture of the combustion liner and defining a passageway sized to convey air through the combustion liner into the combustion chamber from an environment outside the combustion chamber, the locating shoulder located inside of the combustion chamber and extending outwardly from the chute body away from the passageway to block movement of the chute through the combustion liner away from the combustion chamber, and
a retention washer located outside of the combustion chamber and coupled to the chute body, the retention washer extending outwardly from the chute body away from the passageway to block movement of the chute through the combustion liner into the combustion chamber, the retention washer formed to include a plurality of cooling channels arranged to face the outer liner surface of the combustion liner to provide a flow path for the air to flow from the environment outside of the combustion chamber through the plurality of cooling channels and into the plurality of cooling holes arranged around the chute-receiving aperture,
wherein the locating shoulder is formed to include a plurality of cooling scallops that provide a flow path for the air to flow from the plurality of cooling holes into the combustion chamber.

9. The combustor of claim 8 , wherein the retention washer is coupled to the chute body without welding.

10. The combustor of claim 8 , wherein the chute further includes a flared head located outside of the combustion chamber that extends outwardly from the chute body away from the passageway to couple the chute body to the retention washer.

11. The combustor of claim 10 , wherein the flared head is frustoconical.

12. The combustor of claim 10 , wherein the retention washer is formed to include a central opening, the central opening is aligned with the chute-receiving aperture, and the chute extends through the central opening.

13. A combustor for use in a gas turbine engine, the combustor comprising:
a combustion liner that defines a combustion chamber, the combustion liner including an outer liner surface facing away from the combustion chamber, an inner liner surface facing toward the combustion chamber, a chute-receiving aperture that ex

Assignees

• Rolls Royce Nam Tech Inc
• Rolls Royce Nam Tech Inc
• Rolls Royce Corp

Inventors

• Taylor Todd S
• Petty Jack D
• Froemming Kenneth W

Classifications

• F23R3/06

  Arrangement of apertures along the flame tube · CPC title

• F23R2900/00017

  Assembling combustion chamber liners or subparts · CPC title

• F23R3/04

  Air inlet arrangements · CPC title

• F23R3/16

  with devices inside the flame tube or the combustion chamber to influence the air or gas flow · CPC title

• F23R3/002 Primary

  Wall structures (F23R3/02 and F23R3/007 take precedence) · CPC title