Turbine for the expansion of gas/vapour
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United States of America Patent
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Aug 12, 2014
Grant Date -
Jan 12, 2012
app pub date -
Mar 16, 2010
filing date -
Mar 18, 2009
priority date (Note) -
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Abstract
The invention regards a turbine for the expansion of gas and vapor that comprises a body or casing with a volute for the transit of the fluid from an input to an output passage through at least a statoric and a rotoric group, a possible front shield that extends radially from said volute towards the axis of the turbine shaft, an external tube member fixed in front of said shield or said volute designed to hold the turbine shaft with the interposition of a supporting unit (19), where said turbine shaft (15) has a head (15′) supporting the rotoric group (16, 17). The turbine shaft (15) together with the rotoric group (16, 17) is movable axially between a work position, in which the head of said shaft is at a distance from an internal end of the external tube member (18) facing towards the statoric group, and a retracted position, in which the head of the shaft or a part of the rotoric group rests against said internal end of said tube member with the interposition of at least a front seal (41).
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