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US 10,240,594 B2Granted
Dynamic seal cartridge in a fluid end of a reciprocating pump
AssigneeBlack Horse, LLC
InventorsJames Anthony Barnhouse, Jr., Jacob Brown, Daryl Belshan
Life of this patent
Estimating the term…
Abstract
A seal assembly includes a packing nut and a pressure ring configured to be coupled to the packing nut. An inner surface of the pressure ring defines a first circumferential groove that is configured to receive a first seal. The first seal is configured to be inserted into the first circumferential groove before the packing nut is coupled to the pressure ring such that the first seal is inserted into the first circumferential groove without being substantially flexed.
Claims20
A seal assembly, comprising:
- a packing nut;
- and
- a pressure ring configured to be coupled to the packing nut, wherein an inner surface of the pressure ring defines a first circumferential groove that is configured to receive a first seal, and wherein the first seal is configured to be inserted into the first circumferential groove before the packing nut is coupled to the pressure ring such that the first seal is inserted into the first circumferential groove without being substantially flexed,
- wherein one of the packing nut and the pressure ring comprises a pin, and the other of the packing nut and the pressure ring comprises a groove, wherein the pin is inserted into the groove to couple the packing nut to the pressure ring, wherein the groove comprises an axial portion and a circumferential portion, and wherein the pin is positioned in the circumferential portion when the packing nut is coupled to the pressure ring.
1 more element
A fluid end of a pump, comprising:
- a body defining a plunger bore;
- a plunger positioned at least partially within the plunger bore;
- and
- a seal assembly positioned at least partially radially-between the body and the plunger, wherein the seal assembly comprises:
- a packing nut;
- a pressure ring coupled to the packing nut, wherein an inner surface of the pressure ring defines a first circumferential groove that is configured to receive a first seal, wherein the first seal is configured to be inserted into the first circumferential groove before the packing nut is coupled to the pressure ring such that the first seal is inserted into the first circumferential groove without being substantially flexed, wherein one of the packing nut and the pressure ring comprises a pin, and the other of the packing nut and the pressure ring comprises a groove, wherein the pin is inserted into the groove to couple the packing nut to the pressure ring, wherein the groove comprises an axial portion and a circumferential portion, and wherein the pin is positioned in the circumferential portion when the packing nut is coupled to the pressure ring;
- and
- a nose ring coupled to the pressure ring.
5 more elements
A method for assembling a seal assembly, comprising:
- inserting a first seal into a first circumferential groove formed in an inner surface of a pressure ring;
- inserting an inner axial end of a packing nut at least partially into the pressure ring such that the first seal is positioned axially-between the inner axial end of the packing nut and a circumferential protrusion of the pressure ring;
- coupling the packing nut to the pressure ring;
- inserting a second seal into a second circumferential groove formed in the inner surface of the pressure ring;
- and
- inserting an outer axial end of a nose ring at least partially into the pressure ring such that the second seal is positioned axially-between the outer axial end of the nose ring and the circumferential protrusion of the pressure ring.
3 more elements
Dependencies are inferred from the claim text.