Dual ring stuffing box
AssigneeVulcan Industrial Holdings, LLC
InventorsKyle Matthew Ellisor, Jason David Smith, Chance Ray Mullins, Steven Zachary Newberg, Aric Martin Gillispie
Life of this patent
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Abstract
A system includes a pressure ring positioned to abut a fluid end face, the pressure ring having a pressure ring bore with a diameter larger than a fluid end bore diameter. The system also includes an adjacent ring coupled to a fluid end, the pressure ring positioned between the adjacent ring and the fluid end face. The system further includes a face seal positioned at an interface of the pressure ring and the fluid end face, the face seal containing pressurized fluid associated with the fluid end. The system also includes packing material positioned within at least a portion of the pressure ring bore.
Claims26
A system, comprising:
- a pressure ring positioned to directly abut a fluid end face, the pressure ring having a pressure ring bore with a diameter larger than a fluid end bore diameter;
- an adjacent ring coupled to a fluid end, the pressure ring positioned between the adjacent ring and the fluid end face;
- a face seal positioned at an interface of the pressure ring and the fluid end face, the face seal containing pressurized fluid associated with the fluid end;
- packing material positioned within at least a portion of the pressure ring bore;
- a first flow passage formed through at least a portion of a pressure ring thickness, the first flow passage arranged axially along the pressure ring thickness;
- and
- a second flow passage formed through at least a portion of a pressure ring width, the second flow passage arranged radially along the pressure ring width, wherein the first flow passage and the second flow passage intersect.
A system, comprising:
- a fluid end, the fluid end having a recessed area extending to a fluid end face;
- a pressure ring positioned within the recessed area directly against the fluid end face, the pressure ring having a pressure ring bore positioned co-axially with a fluid end bore, and the pressure ring bore having a diameter greater than the fluid end bore;
- an adjacent ring positioned against the pressure ring and coupled to the fluid end;
- a face seal arranged between the pressure ring and the fluid end face;
- packing material positioned within the pressure ring bore, at least a portion of the packing material being positioned external to the fluid end bore;
- and
- an injection port extending through the adjacent ring, the injection port arranged in a low pressure region, axially away from a seal between the pressure ring and the adjacent ring.
A method, comprising:
- inserting a face seal into a face groove;
- positioning a pressure ring, within a recessed portion directly against a fluid end face, to compress the face seal;
- positioning an adjacent ring against the pressure ring;
- securing the adjacent ring to a fluid end, wherein the pressure ring is positioned between the adjacent ring and the fluid end;
- installing, within a pressure ring bore, packing material;
- and
- directing, via an injection port extending through the adjacent ring and into a low pressure region downstream of a seal between the pressure ring and the adjacent ring, a lubricant toward the packing material.
Dependencies are inferred from the claim text.