US 10,502,421 B2Granted

Combustion chamber and a combustion chamber segment

AssigneeROLLS-ROYCE plc

InventorsStephen Charles Harding, Paul Allan Hucker, Giuseppe Rallo

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Abstract

A combustion chamber comprises an upstream ring structure, a downstream ring structure and a plurality of circumferentially arranged combustion chamber segments. Each combustion chamber segment extends the full length of the combustion chamber. Each combustion chamber segment comprises a frame structure and at least an inner wall and the frame structure and the inner wall are integral. An upstream end of each combustion chamber segment is secured to the upstream ring structure and a downstream end of each combustion chamber segment is mounted on the downstream ring structure. The combustion chamber segments are manufactured by additive layer manufacture. The combustion chamber segments have a stiff frame structure which carries the structural loads, the thermal loads, surge loads and flameout loads and the frame structure distributes loads into adjacent components.

Claims34

Dependent claims

A combustion chamber comprising an upstream ring structure, a downstream ring structure and a plurality of circumferentially arranged combustion chamber segments,

each combustion chamber segment extending a full length of the combustion chamber, each combustion chamber segment having an upstream end and a downstream end, the upstream end of each combustion chamber segment being secured to the upstream ring structure and the downstream end of each combustion chamber segment being mounted on the downstream ring structure,
each combustion chamber segment comprising a frame structure and an inner wall, and the frame structure and the inner wall of each combustion chamber segment being an integral, monolithic structure, wherein:
the frame structure having a first edge and a second edge opposite the first edge,
the first edge of the frame structure having an integral first hook extending in a first direction from the inner wall, and the first hook is arranged at a first radial distance from the inner wall,
the second edge of the frame structure having an integral second hook extending in a second direction from the inner wall that is an opposite direction of the first direction from the inner wall, and the second hook is arranged at a second radial distance from the inner wall with the second radial distance being greater than the first radial distance, and
the first hook of each combustion chamber segment engaging the frame structure of an adjacent combustion chamber segment at the second edge of the adjacent combustion chamber segment and the second hook of each combustion chamber segment engaging the first hook of another adjacent combustion chamber segment to form a seal and to distribute loads between the adjacent combustion chamber segments, and
the first hook extends a full length of the frame structure and the second hook extends the full length of the frame structure.

4 more elements

A combustion chamber comprising an upstream ring structure, a downstream ring structure and a plurality of circumferentially arranged combustion chamber segments,

each combustion chamber segment extending a full length of the combustion chamber, each combustion chamber segment having an upstream end and a downstream end, the upstream end of each combustion chamber segment being secured to the upstream ring structure and the downstream end of each combustion chamber segment being mounted on the downstream ring structure,
each combustion chamber segment comprising a box like structure, the box like structure comprising a frame structure, an inner wall and an outer wall, the inner wall being spaced from the outer wall, the outer wall having a plurality of apertures for the supply of coolant into the box like structure,
the frame structure having a first edge extending lengthwise of the combustion chamber segment and a second edge extending lengthwise of the combustion chamber segment,
the first edge of the frame structure having a first hook extending in a first direction from the inner wall, the first hook being arranged at a first radial distance from the inner wall,
the second edge of the frame structure having a second hook extending in a second direction from the inner wall that is an opposite direction of the first direction from the inner wall, the second hook being arranged at a second radial distance from the inner wall and the second radial distance is greater than the first radial distance,
the first hook of each combustion chamber segment engaging the frame structure of an adjacent combustion chamber segment at the second edge of the adjacent combustion chamber segment and the second hook of each combustion chamber segment engaging the first hook of another adjacent combustion chamber segment to form a seal and to distribute loads between the adjacent combustion chamber segments,
the frame structure, the inner wall, the outer wall, the first hook and the second hook of each combustion chamber segment being an integral, monolithic structure, and
the first hook extends a full length of the frame structure and the second hook extends the full length of the frame structure.

5 more elements

A combustion chamber segment, the combustion chamber segment extending a full length of a combustion chamber, the combustion chamber segment having an upstream end and a downstream end,

the upstream end of the combustion chamber segment having features to secure the combustion chamber segment to an upstream ring structure and the downstream end of the combustion chamber segment having features to mount the combustion chamber segment on a downstream ring structure,
the combustion chamber segment comprising a frame structure and an inner wall, and the frame structure and the inner wall being an integral, monolithic structure, wherein:
the frame structure having a first edge and a second edge opposite the first edge,
the first edge of the frame structure having an integral first hook extending in a first direction from the inner wall, and the first hook is arranged at a first radial distance from the inner wall,
the second edge of the frame structure having an integral second hook extending is a second direction from the inner wall that is an opposite direction of the first direction from the inner wall, and the second hook is arranged at a second radial distance from the inner wall and the second radial distance is greater than the first radial distance, and
the first hook extends a full length of the frame structure and the second hook extends the full length of the frame structure.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/010,800Filed 29 Jan 2016
Priority: GB 1501817.94 Feb 2015
Published: US 2016/0258624 A18 Sep 2016
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F23R 3/002
Continuous combustion chambers using liquid or gaseous fuel: wall structures
F02C 7/20
Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for…:…
F23M 5/04
Casings; Linings; Walls: supports for linings
F23R 3/60
Characterised by the arrangement or form of the flame tubes or combustion chambers: support structures; Attaching or mounting means