IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0418863
(2006-05-05)
|
등록번호 |
US-7534086
(2009-07-01)
|
발명자
/ 주소 |
- Mazzola, Stefan
- Keller, Douglas A.
- Schiavo, Anthony L.
- Radonovich, David C.
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
13 |
초록
▼
Aspects of the invention are directed to a multi-layer ring seal segment that can incorporate a plurality of material systems. The ring seal segment can include an inner layer, a central layer and an outer layer. The inner layer can be attached to one side of the central layer, and the outer layer c
Aspects of the invention are directed to a multi-layer ring seal segment that can incorporate a plurality of material systems. The ring seal segment can include an inner layer, a central layer and an outer layer. The inner layer can be attached to one side of the central layer, and the outer layer can be attached to an opposite side of the central layer. The inner and outer layers can be made of a ceramic matrix composite, such as a hybrid oxide ceramic matrix composite or an oxide-oxide ceramic matrix composite. The central layer can be made of a material that has high shear strength relative to the inner and outer layers. The ring seal segment according to aspects of the invention can take advantage of the benefits of the different materials so as to better withstand the operational loads of the turbine.
대표청구항
▼
What is claimed is: 1. A turbine engine ring seal comprising: a ring seal body having a radially inwardly concave surface, the ring seal body being shaped so as to form an extension transitioning in a first region into a forward span and in a second region into an aft span, the first and second spa
What is claimed is: 1. A turbine engine ring seal comprising: a ring seal body having a radially inwardly concave surface, the ring seal body being shaped so as to form an extension transitioning in a first region into a forward span and in a second region into an aft span, the first and second spans being opposite each other and extending at an angle from the extension in a radially outward direction, the ring seal body having a first layer and a second layer, the first layer being made of a ceramic matrix composite, the second layer being made of a non-ceramic matrix composite material, the second layer having an inner surface and an outer surface, wherein the first layer is attached to one of the inner surface and the outer surface of the second layer, and further including a third layer made of a ceramic matrix composite, wherein the third layer is attached to the other one of the inner surface and the outer surface of the second layer. 2. The ring seal of claim 1 wherein the third layer is made of a different ceramic matrix composite than the first layer. 3. The ring seal of claim 1 wherein the first layer is made of a hybrid oxide ceramic matrix composite. 4. The ring seal of claim 1 wherein the first layer is made of an oxide-oxide ceramic matrix composite. 5. The ring seal of claim 1 wherein the second layer is made of one of a strain tolerant aggregate material, friable graded insulation, and a monolithic ceramic. 6. The ring seal of claim 1 wherein the ring seal body includes a first circumferential end and a second circumferential end, wherein at least one of the first and second circumferential ends includes a channel therein, and further including a seal, wherein at least a portion of the seal is received within the channel. 7. The ring seal of claim 1 wherein the ceramic matrix composite first layer includes a ceramic matrix with a plurality of fibers therein, wherein a substantial portion of the fibers at least in the extension are oriented so as to extend along the first layer in a direction from the first region to the second region. 8. The ring seal of claim 1 wherein the first layer has an associated first thickness and the second layer has an associated second thickness, wherein the second thickness is greater than the first thickness. 9. A turbine engine ring seal comprising: a ring seal body having a radially inwardly concave surface, the ring seal body being shaped so as to form an extension transitioning in a first region into a forward span and in a second region into an aft span, the first and second spans being opposite each other and extending at an angle from the extension in a radially outward direction, the ring seal body having a first layer and a second layer, the first layer being made of a ceramic matrix composite, the second layer being made of a non-ceramic matrix composite material, the second layer having an inner surface and an outer surface, wherein the first layer is attached to one of the inner surface and the outer surface of the second layer, the first layer having an outer surface and an inner surface, wherein the outer surface of the first layer is attached to the second layer, and wherein at least a portion of the inner surface of the first layer is coated with a thermal insulating material. 10. A turbine engine ring seal comprising: a ring seal body having a radially inwardly concave surface, the ring seal body being shaped so as to form an extension transitioning in a first region into a forward span and in a second region into an aft span, the first and second spans being opposite each other and extending at an angle from the extension in a radially outward direction, the ring seal body having an inner layer, a central layer and an outer layer, the inner layer being made of a first ceramic matrix composite, the outer layer being made of a second ceramic matrix composite, the central layer being made of a material that is different from each of the first and second ceramic matrix composites, the central layer having an inner surface and an outer surface, the inner layer being attached to the inner surface of the central layer, the outer layer being attached to the outer surface of the central layer. 11. The ring seal of claim 10 wherein the first ceramic matrix composite is the same as the second ceramic matrix composite. 12. The ring seal of claim 10 wherein the first ceramic matrix composite and the second ceramic matrix composite are different. 13. The ring seal of claim 10 wherein at least one of the inner layer and the outer layer is made of a hybrid oxide ceramic matrix composite. 14. The ring seal of claim 10 wherein at least one of the inner layer and the outer layer is made of an oxide-oxide ceramic matrix composite. 15. The ring seal of claim 10 wherein the central layer is made of one of a strain tolerant aggregate material, friable graded insulation, and a monolithic ceramic. 16. The ring seal of claim 10 at least a portion of the inner layer is coated with a thermal insulating material. 17. The ring seal of claim 10 wherein the ring seal body includes a first circumferential end and a second circumferential end, wherein at least one of the first and second circumferential ends includes a channel therein, and further including a seal, wherein at least a portion of the seal is received within the channel. 18. The ring seal of claim 10 wherein the central layer has an associated thickness and each of the inner and outer layers has an associated thickness, wherein the thickness of the central layer is greater than the thickness of the inner layer and the thickness of the outer layer. 19. The ring seal of claim 10 wherein the ceramic matrix composite inner layer includes a ceramic matrix with a first plurality of fibers therein and the ceramic matrix composite outer layer includes a ceramic matrix with a second plurality of fibers therein, wherein a substantial portion of the fibers in each of the first and second plurality of fibers at least in the extension are oriented so as to extend along the inner and outer layers in a direction from the first region to the second region.
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