COMBUSTOR TILE MOUNTING ARRANGEMENT

• US 20110030378A1
• Filed: 07/20/2010
• Published: 02/10/2011
• Est. Priority Date: 08/05/2009
• Status: Active Grant

• Current Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Inventors: CARLISLE, MICHAEL LAWRENCE
• Granted Patent: US 8,833,084 B2
• Time in Patent Office: Days
• US Class Current: 60/753
• CPC Class Codes: F23R 2900/03041 Effusion cooled combustion chamber walls or domes
• CPC Class Codes: F23R 2900/03042 Film cooled combustion chamber walls or domes
• CPC Class Codes: F23R 3/002 Wall structures F23R3/02 and F23R3/007 take precedence
• CPC Class Codes: F23R 3/007 constructed mainly of ceramic components
• CPC Class Codes: F23R 3/60 Support structures; Attaching or mounting means
• CPC Class Codes: Y10T 428/24479 including variation in thickness

Abstract

A tile is provided for lining the hot side of a wall of a combustor. The tile has a tile body with one or more bosses protruding from the cold side thereof. The or each boss extends, in use, through the wall of the combustor and has a threaded recess formed therein for threadingly connecting with a bolt which is inserted into the recess from the cold side of the combustor wall. The bolt fastens the tile to the combustor wall.

Claims

1. A tile for lining a wall of a combustor, the wall having a hot side intended to face a combustion volume and a corresponding cold side intended to face away from the combustion volume, the tile comprising:

a tile body

one or more bosses protruding from a cold side of said tile body, the or each boss extending, in use, through the wall of the combustor, wherein the boss has a threaded recess formed therein for threadingly connecting with a bolt when inserted into the recess from the cold side of the combustor wall, whereby the bolt fastens the tile to the combustor wall.

2. A tile according to claim 1, wherein the recess extends into the tile body.

3. A tile according to claim 1, wherein the tile body has one or more spacing projections protruding from the cold side thereof, the spacing projections engaging with the hot side of the combustor wall when the tile is fastened thereto to determine a spacing of the tile body from the combustor wall.

4. A tile according to claim 1, wherein a plurality of cooling air effusion holes traverse the tile body.

5. A tile according to claim 1, wherein the or each boss has a respective spacer which, in use, interposes between a head of the bolt and the boss, the spacer engaging at one side with the head of the bolt and at the opposite side with the cold side of the combustor wall.

6. A tile according to claim 5, wherein the spacer contains one or more cooling air passages through which cooling air is sent to the hot side of the combustor wall.

7. A tile according to claim 1, wherein the recess has a foot and one or more channels extend through the or each boss to carry cooling air to the foot of the recess.

8. A tile according to claim 7, wherein the or each channel fluidly connects to one or more effusion holes extending from the foot of the recess to the hot side of the tile body.

9. A combustor having a wall having a hot side intended to face a combustion volume and a corresponding cold side intended to face away from the combustion volume, the intended hot side wall being lined with at least one tile, the tile having a tile body with one or more bosses protruding from a surface facing the hot side of the wall, the or each boss extending through the wall of the combustor, wherein the boss has a threaded recess formed therein for threadingly connecting with a bolt which is inserted into the recess from the cold side of the combustor wall, whereby the bolt fastens the tile to the combustor wall.

10. A combustor according to claim 9, wherein the tile body has one or more spacing projections protruding from the surface facing the hot side of the wall, the spacing projections engaging with the hot side of the combustor wall when the tile is fastened thereto to determine a spacing of the tile body from the combustor wall.

11. A combustor according to claim 9, wherein the or each boss has a respective spacer which interposes between a head of the bolt and the boss, the spacer engaging at one side with the head of the bolt and at the opposite side with the cold side of the combustor wall.

12. A combustor according to claim 11, wherein the spacer contains one or more cooling air passages through which cooling air is sent to the hot side of the combustor wall.

13. A combustor according to claim 9, wherein the recess has a foot and one or more channels extend through the or each boss to carry cooling air to the foot of the recess.

14. A combustor according to claim 13, wherein the or each channel fluidly connects to one or more effusion holes extending from the foot of the recess to the hot side of the tile body.