Ceramic matrix composite structure

• US 8,322,983 B2
• Filed: 09/11/2008
• Issued: 12/04/2012
• Est. Priority Date: 09/11/2008
• Status: Expired due to Fees

• Current Assignee: Siemens Energy Incorporated (Siemens AG)
• Original Assignee: Siemens Energy Incorporated (Siemens AG)
• Inventors: Marini, Bonnie D.
• Primary Examiner(s): Chaudhuri, Olik
• Assistant Examiner(s): TOBERGTE, NICHOLAS J
• Application Number:
  US12/208,542
• Publication Number:
  US 20100062210A1
• Time in Patent Office: 1,545 Days
• Field of Search: 415/134, 415/213.1, 415/214.1
• US Class Current: 415/214.1
• 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 428/24008 including fastener for attaching to external surface

Abstract

A composite structure (10), which may be a 2-dimensional ceramic matrix composite material, may include a first body (30) made of a composite material defining a first in-plane direction, a second body (20) made of a composite material defining a second in-plane direction wherein the first body (30) is connected with the second body (20) so that the first in-plane direction is substantially normal to the second in-plane direction. The second body (20) of the composite structure may include a first leg (24), a first bolting surface (22) extending from the first leg (24) and at least one aperture (56) formed in the first bolting surface (22) substantially normal to the second in-plane direction. A first recess (32) may be formed within the first body (30) sized to receive the first leg (24).

Claims

1. A composite structure comprising:

a first body made of a ceramic matrix composite material comprising fibers defining a first in-plane direction;

a second body made of a ceramic matrix composite material comprising fibers defining a second in-plane direction, the second body comprising;

a first leg;

a first bolting surface extending from the first leg; and

at least one aperture formed in the first bolting surface substantially normal to the second in-plane direction; and

the first body connected with the second body so that the first in-plane direction is substantially normal to the second in-plane direction.

2. The composite structure of claim 1 further comprising:

a first recess formed within the first body sized to receive the first leg; and

a filament wound over a portion of the first recess to retain the first leg within the first recess.

3. The composite structure of claim 2 further comprising:

a slot formed within the first leg; and

a key fitted within the slot and affixed to the first body.

4. The composite structure of claim 1 further comprising the first body and the second body fabricated from a 2-dimensional ceramic matrix composite material and forming a component within a combustion turbine.

5. The composite structure of claim 4 further comprising:

a first recess formed within the first body sized to received a portion of the second body so that the second body may move relative to the first body; and

a filament wound over a portion of the first recess to retain the portion of the second body within the first recess.

6. The composite structure of claim 1 further comprising:

the first body fabricated from a 2-dimensional ceramic matrix composite material and forming a component within a combustion turbine;

the second body fabricated from a 2-dimensional ceramic matrix composite material forming a bolt flange, the bolt flange comprising a first leg connected with the first body and a bolting surface extending from the first leg; and

at least one aperture formed within the bolting surface in a direction substantially normal to the second in-plane direction.

7. The composite structure of claim 6 further comprising a thermal barrier coating deposited on a surface of the first body.

8. An assembly for installation in a gas turbine engine, the assembly comprising:

a component fabricated from a ceramic matrix composite material forming a first fiber direction; and

a bolt flange fabricated from a ceramic matrix composite material forming a second fiber direction, the bolt flange comprising;

a leg affixed to the component;

a bolting surface extending from the leg wherein the first fiber direction is substantially normal to the second fiber direction; and

at least one aperture formed in the bolting surface substantially normal to the second fiber direction.

9. The assembly of claim 8 further comprising at least one aperture formed through the bolting surface and substantially normal to the second fiber direction.

10. The assembly of claim 9 further comprising an upper surface of the leg of the bolt flange positioned beneath an exterior surface of the component.

11. The assembly of claim 8 further comprising a recess formed within the component wherein the leg of the bolt flange is affixed within the recess.

12. The assembly of claim 11 further comprising a filament wound onto the component and over the leg.

13. The assembly of claim 11 further comprising:

a slot formed within the bolt flange; and

a key fitted within the slot and affixed to the component.