Cryogenic liquid expansion turbine
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United States of America Patent
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Sep 12, 2017
Grant Date -
Oct 2, 2014
app pub date -
Oct 15, 2012
filing date -
Oct 19, 2011
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Abstract
A cryogenic liquid expansion turbine has a turbine wheel mounted on a rotary shaft, at least one radial inlet for cryogenic liquid to be expanded in the expansion turbine for the rotary shaft, and a dry gas sealing means at a position along the rotary shaft between the turbine wheel and the bearings. There is a thermal barrier member between the turbine wheel and the dry gas sealing means, a gas chamber on the dry gas sealing means side of the thermal barrier member, and an internal passage for cryogenic gas to the said gas chamber. A method is also provided.
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