Plunger and cylinder assembly for a reciprocating pump
AssigneeSouthern Stimulation Technologies, LLC
InventorsIlo Ray Floyd, Jr., Robert Lee McPheron, IV, Chad Alan Hawkins
Life of this patent
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Abstract
A plunger and cylinder assembly for the fluid end of a reciprocating pump. The assembly comprises a traveling cylinder, a stationary plunger, and an optional sleeve secured to the traveling cylinder in a detachable manner. The traveling cylinder is displaced along its axis by a thrust component and acts cooperatively with the stationary plunger to create a pressure change in the reciprocating pump.
Claims13
A plunger and cylinder assembly for a fluid end of a reciprocating pump comprising:
- a. a traveling cylinder securable to a thrust component of a power end;
- b. a stationary plunger comprising a plunger shaft and a plunger head positioned concentrically within the traveling cylinder;
- and
- c. a sleeve detachably secured to the traveling cylinder, wherein the inner diameter of the sleeve receives the plunger head;
- and
- wherein the traveling cylinder is displaceable along its axis by the thrust component of the power end when secured to the thrust component, and further wherein the sleeve and the plunger head act cooperatively to create a change in pressure within the fluid end of the reciprocating pump when the traveling cylinder is displaced.
A method of retrofitting a reciprocating pump comprising:
- a. removing a plunger from a reciprocating pump fluid end and replacing the plunger with a traveling cylinder;
- b. securing a sleeve with a desired inner diameter to the traveling cylinder;
- and
- c. removing a cylinder head plug from the reciprocating pump fluid end and replacing the cylinder head plug with a stationary plunger comprising a plunger head with an outer diameter to match an inner diameter of the sleeve.
A method of optimizing reciprocating pump performance comprising:
- a. providing a reciprocating pump fluid end comprising a traveling cylinder, a sleeve, and a stationary plunger;
- b. detaching and removing the stationary plunger;
- c. detaching and removing the sleeve from the traveling cylinder;
- d. attaching a selected sleeve with a desired inner diameter for desired performance characteristics;
- and
- e. selecting and attaching the stationary plunger comprising a plunger head with a matching outer diameter for the selected sleeve or, alternatively, replacing the plunger head of the stationary plunger with a plunger head having a matching outer diameter for the selected sleeve and attaching the stationary plunger.
Dependencies are inferred from the claim text.