High temperature seals and high temperature sealing systems
First Claim
Patent Images
1. A high temperature seal comprising:
- an interior region comprising a ceramic matrix composite material that swells due to oxidation when exposed to a high temperature environment of at least 500°
Celsius and at least one projection that is able to be inserted into a slot; and
an environmental barrier coating that substantially prevents the oxidation swelling to coated areas of the interior region;
wherein the coating is disposed upon an exterior surface of the interior region such that a distal end of at least one projection is partially uncoated and the remainder of the interior region is substantially covered by the coating.
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Accused Products
Abstract
A high temperature seal that may include an interior region comprising a material that swells when exposed to a high temperature environment and at least one projection that is able to be inserted into a slot, and a coating that substantially prevents swelling to coated areas of the interior region. The coating may be disposed upon an exterior surface of the interior region such that a distal end of at least one projection remains at least partially uncoated and the remainder of the interior region is substantially covered by the coating. The interior region may include a ceramic matrix composite.
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Citations
20 Claims
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1. A high temperature seal comprising:
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an interior region comprising a ceramic matrix composite material that swells due to oxidation when exposed to a high temperature environment of at least 500°
Celsius and at least one projection that is able to be inserted into a slot; andan environmental barrier coating that substantially prevents the oxidation swelling to coated areas of the interior region; wherein the coating is disposed upon an exterior surface of the interior region such that a distal end of at least one projection is partially uncoated and the remainder of the interior region is substantially covered by the coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A high temperature sealing system comprising:
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a first structure with a first seal slot and a second structure with a second seal slot, the first seal slot and the second seal slot opposing each other across a sealing area; a high temperature seal, the high temperature seal comprising an interior region with a first projection that fits within the first seal slot and a second projection that fits within the second seal slot such that, upon assembly, the high temperature seal bridges the sealing area, the interior region being comprised of a ceramic matrix composite that swells due to oxidation when exposed to a high temperature environment; and an environmental barrier coating that substantially prevents the oxidation swelling to coated areas of the interior region; wherein the environmental barrier coating is disposed upon the exterior surface of the interior region such that a distal end of the first projection and a distal end of the second projection are each partially uncoated and the remainder of the interior region is substantially covered by the environmental barrier coating.
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17. A high temperature sealing system for a shroud damper system in a turbine, comprising:
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a first damper block with a first seal slot and a second damper block with a second seal slot, the first seal slot and the second seal slot opposing each other across a sealing area; a high temperature seal, the high temperature seal comprising an interior region with a first projection that fits within the first seal slot and a second projection that fits within the second seal slot such that, upon assembly, the high temperature seal bridges the sealing area, the interior region being comprised of a ceramic matrix composite that swells due to oxidation when exposed to a flow path of the gas turbine; and an environmental barrier coating that substantially prevents the oxidation swelling to coated areas of the interior region; wherein the environmental barrier coating is disposed upon the exterior surface of the interior region such that a distal end of the first projection and a distal end of the second projection are each partially uncoated and the remainder of the interior region is substantially covered by the environmental barrier coating. - View Dependent Claims (18, 19, 20)
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Specification