Bearing protector for axial shaft movement
AssigneeAES Engineering Ltd.
InventorAlan James Roddis
Life of this patent
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Abstract
A seal device, which accommodates axial displacement between a housing and shaft of an item of rotating equipment, includes a stator which locates into the housing of a piece of rotating equipment. A first rotor locates on the shaft of the rotating equipment and a second rotor is rotationally coupled to the first rotor with the first rotor being permitted to axially float with respect to the second rotor. The device provides sealing integrity when the shaft is both idle and operational. The sealing device may be used, for instance, in a double ended centrifugal pump where shaft displacement occurs from thermal expansion.
Claims12
A seal device, comprising;
- a stator which locates into a housing of a piece of rotating equipment, the piece of rotating equipment having a shaft;
- a first rotor which locates on the shaft of the piece of rotating equipment;
- a second rotor rotationally coupled to said first rotor with said first rotor axially moving with respect to said second rotor;
- and,
- at least one solid deformable toroid member positioned adjacent to said second rotor and said stator, said deformable toroid member sealingly engaging said second rotor and said stator when the shaft of the rotating equipment is idle and being sealingly disengaged from at least one of said first rotor, said second rotor and said stator when the shaft is rotating.
Dependencies are inferred from the claim text.