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US 6,283,479 B1Granted
High temperature low leakage seal for a shaft on a gas turbine engine
AssigneeSolar Turbines Incorporated
InventorShihming Jan
Life of this patent
Estimating the term…
Abstract
A sealing arrangement improves sealing of a shaft in a control system on a gas turbine engine. The sealing arrangement includes a first plate and a non-metallic plate. The non-metallic plate has a glass transition temperature above an operating temperature range. The non-metallic plate and the first plate are disposed between a high temperature, high pressure fluid and a low pressure fluid.
Claims4
A sealing arrangement for a gas turbine engine comprising:
- a housing having a first portion and a second portion, said second portion being distal from said first portion, said second portion having a lip portion;
- a shaft being disposed through said housing;
- a first seal being disposed proximate said first portion, said first seal being intermediate said shaft and said housing, said first seal having high temperature mechanical strength;
- and
- a polymeric seal being disposed intermediate said first seal and said second portion, said polymeric seal being intermediate said shaft and said housing, said polymeric seal having a glass transition temperature above a predetermined operating temperature,
- said polymeric seal being adjacent said lip portion.
3 more elements
Dependencies are inferred from the claim text.