Expansion turbine for low-temperature applications
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United States of America Patent
Stats
-
Jan 21, 2003
Grant Date -
Jan 9, 2003
app pub date -
Sep 17, 2001
filing date -
Jul 6, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An expansion turbine for low-temperature applications containing a turbine stage into which a cold gas is admitted. A turbine rotor is mounted on a shaft. Also provided is a roller support for the shaft being lubricated with a minimum amount of oil or grease. The roller support contains a roller bearing located adjacent to the turbine stage. The roller bearing is comprised of an inner bearing ring, rollers, and an outer bearing ring supported on the side of the housing. An insulating bush made of ceramic engineering material is arranged between the inner bearing ring and the shaft. The bush thermally separates the inner bearing ring from the cold shaft.
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