F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 11/00 (2006.01) F01D 25/30 (2006.01) F02C 7/28 (2006.01)
Patent
CA 2060876
56,411 ABSTRACT A seal is provided to prevent the recirculation of hot gas through an annular cavity formed between the outer flow liner of a diffuser and an exhaust cylinder in the exhaust section of a gas turbine. The seal is formed from a high temperature cloth, such as fiber glass, which is sandwiched between two layers of a fine wire mesh. The seal is comprised of a plurality of arcuate segments. Although the cloth has a rectangular shape when in its undeformed state, it takes an arcuate shape as a result of being crimped within inner and outer arcuate channels. The seal is retained by sliding the channels into circumferential grooves in the exhaust cylinder and outer flow liner. An expansion loop is formed in the seal to allow for differential expansion between the exhaust cylinder and the outer liner.
Bereskin & Parr
Westinghouse Electric Corporation
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