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US 2026/0298218 A1Published application
Long stroke parallel pump
AssigneeNational Oilwell Varco, L.P.
InventorsTravis Lee Bolt, Shriram Pushparaj Patil
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Abstract
Various embodiments disclosed relate to a reciprocating triplex pump. The present disclosure includes a reciprocating triplex pump with a longer stroke time. Such a pump can include a prime mover with a shaft extending longitudinally; a gear box arranged longitudinally along the shaft, the gear box for actuating the prime mover; and a slider-crank mechanism laterally offset from the gear box. The slider-crank mechanism can include a rotating member assembly, a sliding member assembly, and a connecting rod assembly.
Claims20
A method of pumping fluid comprising:
- producing rotational movement at a prime mover;
- delivering the rotational movement with a shaft rotating about a longitudinal axis;
- at a gear system, reorienting the rotational movement;
- driving a plurality of bull gears with the gear system, the bull gears rotating about respective axes orthogonal to the longitudinal axis, wherein the respective axes of the plurality of bull gears are non-coplanar;
- producing linear movement in a plurality of sliding members via respective connecting rods, respective ones of the connecting rods pivotally coupled to corresponding respective ones of the plurality of bull gears and pivotally coupled to corresponding respective ones of the plurality of sliding members, wherein the respective axes are orthogonal to a sliding member plane intersecting a longitudinal center axis of each of the plurality of sliding members;
- and
- drawing in and discharging the fluid with the linear movement.
4 more elements
A method of pumping fluid comprising:
- producing rotational movement at a prime mover;
- driving at least three bull gears with the rotational movement, the at least three bull gears rotating about respective axes that are non-coplanar;
- reciprocating at least three sliding members parallel to one another, respective ones of the at least three sliding members coupled to corresponding respective ones of the at least three bull gears via respective connecting rods, the respective connecting rods pivotally coupled to the corresponding respective ones of the at least three bull gears at locations offset from the respective axes of the corresponding respective ones of the at least three bull gears;
- and
- alternately drawing fluid in and discharging the fluid with the reciprocating of the at least three sliding members.
2 more elements
Dependencies are inferred from the claim text.