Hydro-lift dynamic circumferential seal

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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Details

277 70, 277 75, 277 961, 277157, 277192, 277215, F16J 1530, F16J 1534

Patent

active

051451891

ABSTRACT:
A hydro-lift seal for the bore region of a seal segment having a shallow groove inlet on the high pressure side of the seal segment. The shallow groove inlet is aerodynamically connected to a shallow groove which extends in the direction of rotation of a seal race, the seal race being connected to a rotating shaft. The shallow groove is aerodynamically connected to a deep groove which has an interface region which is perpendicular to the shallow groove and a region which is parallel to the shallow groove. A vent groove located on the low pressure side of the seal segment is parallel to that region of the deep grove which is parallel to the shallow groove. A plurality of venting holes is located in the vent groove which connect the vent groove to the high pressure side of the seal segment.

REFERENCES:
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patent: 5058904 (1991-10-01), Neuola
J. L. Cabe et al.; "Advancing the Mundane Seal"; Leading Edge; pp. 12-15.

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