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US 12,429,062 B2Granted
Pump arrangement for pumping barrier liquid and a mechanical shaft seal
AssigneeSulzer Management AG
InventorJukka Vainikainen
Life of this patent
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Abstract
A pump arrangement for pumping barrier liquid in a sealed space of a mechanical shaft seal includes a housing assemblable in connection with a rotatable shaft of a device to be sealed by the mechanical shaft seal. The housing includes a pumping element, which is configured to be in force transmission connection with the rotatable shaft to provide power to operate the pumping element when in use.
Claims11
A pump arrangement for pumping barrier fluid in a sealed space of a mechanical shaft seal, comprising:
- a housing assemblable in connection with a rotatable shaft of a device to be sealed by the mechanical shaft seal;
- and
- an impeller arranged in the housing and rotatably supported by a shaft of the impeller to the housing, the impeller comprising a wheel arranged to at least partly extend radially inwardly out from the housing to the sealed space, such that a radial outer surface of the wheel is disposed against and in force transmission connection with an outer surface of the rotatable shaft of the device to provide power to the impeller, and rotate the impeller in an opposite direction to the direction of rotation of the rotatable shaft of the device.
Dependencies are inferred from the claim text.