Packing style piston rod
AssigneeGd Energy Products, LLC
InventorKonner Casey Kay
Life of this patent
Estimating the term…
Abstract
A frac/drilling style piston for a high-pressure reciprocating pump. The piston assembly includes a piston that can achieve higher pressures than traditional style pistons. By delivering lube oil to a lantern ring and packing style seals, lubrication of the packing can be accomplished more effectively. In addition, the heat generated between the seal material and the dynamic sealing surface is mitigated more effectively as well. By achieving those items more effectively, the pump can operate at a higher pressure without burning up the packing.
Claims20
A piston assembly for a reciprocating pump with a power end and a fluid end, the piston assembly comprising:
- a hollow cylindrical liner having a longitudinal axis, a pumping end, and an inner surface, the hollow cylindrical liner being secured in place by a retaining element;
- a piston disposed within the hollow cylindrical liner, the piston having its own longitudinal axis and a continuous pumping face, the piston being configured to be coupled with the power end of the reciprocating pump, the piston having an outer surface and an internal passageway extending along its longitudinal axis, the outer surface of the piston being spaced apart from and not in contact with the inner surface of the hollow cylindrical liner, the continuous pumping face having a diameter extending radially outward past the outer surface located proximate to the pumping end of the hollow cylindrical liner;
- and
- a packing disposed on the piston and positioned in contact with the outer surface of the piston, and the packing engages the inner surface of the hollow cylindrical liner when the piston is inserted into the hollow cylindrical liner, wherein a fluid can be supplied through the internal passageway.
A piston assembly for a reciprocating pump with a power end and a fluid end, the piston assembly comprising:
- a hollow cylindrical liner having a longitudinal axis, a pumping end, and an inner surface, the hollow cylindrical liner is retained in its position relative to a fluid end casing by a mounting ring;
- a piston disposed within the hollow cylindrical liner, the piston having its own longitudinal axis and a continuous pumping face, the piston being configured to be coupled with the power end of the reciprocating pump, the piston having an outer surface and an internal passageway extending along its longitudinal axis, the outer surface of the piston is not in contact with the inner surface of the hollow cylindrical liner, the continuous pumping face having a diameter extending radially outward past the outer surface located proximate to the pumping end of the hollow cylindrical liner;
- and
- a packing disposed on the piston and positioned in contact with the outer surface of the piston, and the packing engages the inner surface of the hollow cylindrical liner when the piston is inserted into the hollow cylindrical liner, wherein a fluid can be supplied through the internal passageway.
A reciprocating pump, comprising:
- a power end;
- a fluid end including a bore formed therein;
- and
- a piston assembly having a first end and a second end opposite the first end, the first end of the piston assembly is coupled to the power end, the second end of the piston assembly is coupled to the fluid end, the piston assembly including:
- a hollow cylindrical liner having a longitudinal axis, a pumping end, and an inner surface, the hollow cylindrical liner being secured in place by a retaining element;
- a piston disposed within the hollow cylindrical liner, the piston having an outer surface, a continuous pumping face having a diameter extending radially outward past the outer surface located proximate to the pumping end of the hollow cylindrical liner, and an internal passageway extending therein, the outer surface of the piston not in contact with the inner surface of the hollow cylindrical liner;
- and
- a packing disposed on the piston, the packing engaging the inner surface of the hollow cylindrical liner when the piston is inserted into the hollow cylindrical liner, wherein a fluid can be supplied through the internal passageway.
Dependencies are inferred from the claim text.