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Low thermal expansion seal ring support

United States Patent

November 7, 2000
View the Complete Patent at the US Patent & Trademark Office
Today, the trend is to increase the temperature of operation of gas turbine engines. To cool the components with compressor discharge air, robs air which could otherwise be used for combustion and creates a less efficient gas turbine engine. The present low thermal expansion sealing ring support system reduces the quantity of cooling air required while maintaining life and longevity of the components. Additionally, the low thermal expansion sealing ring reduces the clearance "C","C'" demanded between the interface between the sealing surface and the tip of the plurality of turbine blades. The sealing ring is supported by a plurality of support members in a manner in which the sealing ring and the plurality of support members independently expand and contract relative to each other and to other gas turbine engine components.
Dewis; David W. (San Diego, CA), Glezer; Boris (Del Mar, CA)
Caterpillar Inc. (Peoria, IL)
08/ 897,850
July 21, 1997
"The Government of the United States of America has rights In this invention pursuant to Contract No. DE-FC21-95MC31173 awarded by the U.S. Department of Energy."