Centrifugal pump for heating fluid by eddy current, and subsea tool for heating fluid by eddy current
AssigneePetroleo Brasileiro S.A. - Petrobras
InventorErnani FERNANDES VARGAS DA SILVA
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Abstract
The present invention provides a centrifugal pump for heating fluid by eddy current comprising a volute and a cover, in which internally regarding the volute there are provided: an impeller positioned between two supporting annular disks of magnets each comprising a plurality of permanent magnets; and two armatures positioned at the ends of the internal assembly. In addition, the invention also provides a subsea tool for fluid heating by eddy current comprising: a centrifugal pump driven by a hydraulic motor by means of a shaft; a fluid storage tank hydraulically connected to the centrifugal pump; at least one piloted on-off valve; piloted directional valves; and a filter hydraulically connected to the centrifugal pump.
Claims9
1-6. (canceled)
A subsea tool for fluid heating by eddy current, comprising:
- a centrifugal pump driven by a hydraulic motor by means of a shaft;
- a fluid storage tank hydraulically connected to the centrifugal pump;
- at least one piloted on-off valve;
- piloted directional valves;
- and a filter hydraulically connected to the centrifugal pump, wherein the centrifugal pump is as defined by a volute and a cover;
- an impeller positioned between two supporting annular disks of magnets each comprising a plurality of permanent magnets;
- and two armatures positioned at ends of an interior of the volute.
Dependencies are inferred from the claim text.