Turbine with freely rotatable rotor
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United States of America Patent
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-
Feb 10, 1981
Issued Date -
N/A
app pub date -
Dec 10, 1979
filing date -
Dec 10, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A steam turbine having side by side rotors within the turbine housing, one rotor fixed to the turbine shaft and the other rotor free to rotate on the turbine shaft. The fixed rotor has a single set of vanes, the freely rotatable rotor has two sets of vanes, one set being adjacent the vanes of the fixed rotor and the other set adjacent a fourth set of vanes integral with the housing. One steam nozzle delivers steam against the vanes on the fixed rotor and a second steam nozzle delivers steam against the set of vanes on the second rotor that are adjacent the fixed vanes on the housing. The steam pressure is controlled so that steam from the nozzles will drive the fixed rotor and shaft at a selected speed which may be faster or slower than the speed of the freely rotatable rotor. The freely rotatable rotor may include reversely directed apertures permitting steam from the first nozzle to flow outwardly to act against the fixed vanes on the housing.
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