Packing sleeve removal feature

Patent metadata

Field	Value
Publication number	US-11959476-B2
Application number	US-202217673428-A
Country	US
Kind code	B2
Filing date	Feb 16, 2022
Priority date	Feb 16, 2022
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A fluid end block for a reciprocating pump defines a fluid chamber and a packing bore. An outlet fluid passage is formed in the fluid end block in communication with the fluid chamber and includes an outlet valve. An inlet fluid passage is formed in the fluid end block in fluid communication with the fluid chamber and includes an inlet valve. A plunger is reciprocally disposed in the packing bore. Packing in the packing bore is positioned to contact the plunger and a packing sleeve is disposed between the packing and the packing bore. The packing sleeve is a hollow cylinder with inner and outer surfaces and an inner end configured to be inserted into the packing bore. The inner end includes a bevel extending between the outer surface and the inner end, the outer surface including a notch formed therein adjacent the inner end.

First claim

The invention claimed is:

1. A fluid end for a reciprocating pump system, comprising: a fluid end block defining a fluid chamber and a packing bore; an outlet fluid passage formed in the fluid end block in fluid communication with the fluid chamber, the outlet fluid passage including an outlet valve; an inlet fluid passage formed in the fluid end block in fluid communication with the fluid chamber, the inlet fluid passage including an inlet valve; a plunger reciprocally disposed in the packing bore of the fluid chamber to generate fluid pressure therewithin; packing disposed in the packing bore positioned to contact the plunger; and a packing sleeve disposed between the packing and the packing bore, the packing sleeve being configured as a hollow cylinder, the hollow cylinder including: an inner surface, an outer surface opposite the inner surface, an inner end configured to be inserted first into the packing bore, and an outer end, the inner surface including a notch formed therein adjacent the inner end, and the inner end and the notch being in closer proximity to the fluid chamber than the outer end.

2. The fluid end of claim 1 , wherein the packing sleeve is of single-piece construction.

3. The fluid end of claim 1 , wherein the notch extends to the inner end.

4. The fluid end of claim 1 , wherein the notch includes an inwardly facing radial face.

5. The fluid end of claim 1 , wherein the notch is annular and extends an entire distance about an inner periphery of the inner surface.

6. The fluid end of claim 1 ,
wherein the inner surface includes a plurality of notches, and
wherein the plurality of notches include the notch.

7. The fluid end of claim 6 , wherein the plurality of notches are formed in the inner end.

8. The fluid end of claim 6 , wherein the plurality of notches are holes formed through the hollow cylinder.

9. A method of removing a packing sleeve from a packing bore of a fluid end block of a reciprocating pump system, the method comprising: positioning a tool inside the packing sleeve, wherein the tool is an expanding collet tool; expanding the tool inside the packing sleeve; engaging, with the tool, one or more notches of the packing sleeve; and applying, via an actuator, a load to the tool and to the one or more notches in a direction to force the packing sleeve out of the packing bore and out of the fluid end block.

10. The method of claim 9 , wherein the one or more notches are formed in the packing sleeve at or near an inner end of the packing sleeve.

Assignees

• Spm Oil & Gas Inc

Inventors

• Figgs David T
• Poehls Justin

Classifications

• F04B53/22 Primary

  Arrangements for enabling ready assembly or disassembly · CPC title

• F04B53/164

  Stoffing boxes · CPC title

• F16J15/183

  using a lantern ring · CPC title

• F16J15/56 Primary

  Other sealings for reciprocating rods · CPC title

• F16J15/3268

  Mounting of sealing rings · CPC title