Air riding seal for a turbine
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United States of America Patent
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Jul 19, 2016
Grant Date -
N/A
app pub date -
Jul 9, 2015
filing date -
Jul 9, 2015
priority date (Note) -
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Abstract
An air riding seal between a rotor and a stator in a turbine of a gas turbine engine, where an annular piston is movable in an axial direction within a housing that extends from the stator, and a bellows is secured to the annular piston to form a flexible air passageway from a compressed air inlet through the annular piston and into a cushion cavity that forms an air riding seal between the annular piston and the rotor sealing surface. In another embodiment, a flexible seal secured to and extending from the annular piston forms a sealing surface between the annular piston chamber and the annular piston to provide a seal and allow for axial movement.
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