Modular plunger packing gland assembly
AssigneeCaterpillar Inc. Joint OC
InventorsJustin Lane Poehls, Connor Robert Landrum, David Theodore Figgs
Life of this patent
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Abstract
A modular plunger packing gland assembly for a plunger of a hydraulic frac pump is disclosed. The modular plunger packing gland assembly includes an annular packing nut configured to be disposed circumferentially about the plunger and proximate a plurality of annular seals disposed about the plunger, and an annular packing gland having an inner circumferential threaded interface configured to engage an external circumferential thread defined on the packing nut. The annular packing gland further defines a plurality of threaded openings configured to receive a plurality of threaded bolts configured to securely fasten the annular packing gland and the packing nut to the pump.
Claims13
A modular plunger packing gland assembly for a plunger of a frac pump, comprising:
- an annular packing nut configured to be disposed circumferentially about the plunger and proximate a plurality of annular seals disposed about the plunger;
- and
- an annular packing gland having an inner circumferential threaded interface configured to engage an external circumferential thread defined on a head of the packing nut, the annular packing gland further defining a plurality of openings configured to receive a plurality of threaded bolts configured to securely fasten the annular packing gland and the packing nut to the frac pump,
- wherein the inner circumferential threaded interface is disposed around a portion of the packing nut having the largest outer diameter of the packing nut;
- wherein the packing nut is disposed entirely within the annular packing gland.
A packing gland assembly for a plunger bore of a hydraulic fracturing pump, comprising:
- a packing nut;
- and
- a packing gland that is configured to be bolted onto a fluid end of the hydraulic fracturing pump, the packing gland including:
- a sleeve that fits within the plunger bore and holds a packing within an internal passage of the sleeve;
- an inner circumferential threaded interface outside an end of the sleeve and configured to engage an external thread defined on the packing nut;
- and
- a plurality of openings configured to receive respective bolts configured to bolt on the packing gland to the fluid end,
- wherein the packing nut is configured to be threaded to the inner circumferential threaded interface of the packing gland to engage the packing with an end portion of the packing nut that is inserted within the internal passage of the sleeve;
- wherein the inner circumferential threaded interface is disposed around a portion of the packing nut having the largest outer diameter of the packing nut;
- wherein the packing nut is disposed entirely within the packing gland.
Dependencies are inferred from the claim text.