# US 2013/0152591 A1 · System of integrating baffles for enhanced cooling of cmc liners

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- Number: US 2013/0152591 A1
- Document ID: US20130152591A1
- Status: Published application
- Kind: A1
- Application number: 13/628,430
- Filed: 2012-09-27
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: General Electric Company
- Inventors: Bryan Robert Dery; Scott Matthew Bush; Donald Michael Corsmeier
- Web page: https://patentgrep.com/patent/US20130152591A1

## CPC

- F23R 3/007: {constructed mainly of ceramic components}
- F23R 3/60: Support structures; Attaching or mounting means
- F23R 2900/00012: Details of sealing devices
- F23R 2900/03044: Impingement cooled combustion chamber walls or subassemblies
- F23R: GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures F23C10/16)

## Abstract

A system of integrating baffles for enhanced cooling of CMC liners is comprised of a combustor assembly having a dome mount assembly, outer liner and inner liner. Liners include those manufactured from and in a process for CMC (Ceramic Matrix Composite). One or more liner baffles such as outer baffle and inner baffle, are provided to reduce the pressure drop across the liner, allowing the addition of more cooling holes and thereby reducing the cooling hole spacing while not increasing the required amount of cooling air. CMC liners are incorporated, as desired, to take advantage of shapes and hole dispositions made possible by use of CMC over past designs.

## Claims

### Claim 1

A system of integrating baffles for enhanced cooling of CMC liners comprising CMC combustor liners with CMC liner flanges, coupled with one or more baffles each having a forward end and an aft end.

### Claim 2 (depends on 1)

The system of claim 1 wherein the baffles are not sealed at either end.

### Claim 3 (depends on 1)

The system of claim 1 wherein the baffles are sealed at only one end of each baffle.

### Claim 4 (depends on 1)

The system of claim 1 wherein the baffles are sealed at both ends.

### Claim 5 (depends on 1)

The system of claim 1 wherein an inner baffle is bolted at a forward end, that end being a forward mount to a dome plate and allowed to remain free at an aft end.

### Claim 6 (depends on 5)

The system of claim 5 wherein the baffle is incorporated into the piston ring seal housing thereby providing seal housing support that supports a seal housing, which in turn captures a piston ring seal.

### Claim 7 (depends on 1)

The system of claim 1 wherein the baffle aft ends have piston ring housings and piston ring seals formed thereupon.

### Claim 8 (depends on 6)

The System of claim 6 further comprising liner retainers and seals.

### Claim 9 (depends on 1)

The system of claim 1 further comprising the CMC liner flanges oriented from the group consisting pure radially, selected conical angle.

### Claim 10

A system of integrating baffles for enhanced cooling of CMC liners comprising CMC combustor liners with CMC liner flanges, coupled with one or more baffles each having a forward end and an aft end, the baffle aft ends having piston ring housings and piston ring seals formed thereupon, a dome plate, liner retainers, and seals.

### Claim 11 (depends on 10)

The system of claim 10 wherein the baffles are not sealed at either end.

### Claim 12 (depends on 10)

The system of claim 10 wherein the baffles are sealed at only one end of each baffle.

### Claim 13 (depends on 10)

The system of claim 10 wherein the baffles are sealed at both ends.

### Claim 14 (depends on 10)

The system of claim 10 wherein an inner baffle is bolted at the forward end, that end being a forward mount to the dome plate and allowed to remain free at the aft end.

### Claim 15 (depends on 10)

The system of claim 10 wherein the baffle is incorporated into the piston ring seal housing thereby providing a seal housing support that supports the seal housing, which in turn captures the piston ring seal.

### Claim 16 (depends on 10)

The system of claim 10 further comprising the CMC liner flanges oriented from the group consisting pure radially, selected conical angle.

### Claim 17 (depends on 10)

The system of claim 10 wherein the baffle aft ends have piston ring housings and piston ring seals formed thereupon.

### Claim 18

A system for enhanced cooling of CMC liners comprising CMC combustor liners with CMC liner flanges, coupled with a dome plate, liner retainers, and seals and no baffles.

### Claim 19 (depends on 18)

The system of claim 18 wherein the combustor liner provides a direct sealing interface with a turbine nozzle.

### Claim 20

A system for enhanced cooling of CMC liners comprising CMC combustor liners with CMC liner flanges, coupled with a dome plate, liner retainers, and seals and no baffles wherein the combustor liner provides a direct sealing interface with as turbine nozzle.