Fluid end
AssigneeKerr Machine Co.
InventorsMicheal Cole Thomas, Christopher Todd Barnett, Kelcy Jake Foster, Nicholas Son, John Keith, Mark S. Nowell
Life of this patent
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Abstract
A fluid end made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is made of a housing having a discharge bore and an intake bore formed therein. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing and between the discharge and intake bores. The fluid routing plug carries seals that engage sealing surfaces formed within the housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear within each housing.
Claims27
A fluid end section, comprising:
- a housing having a bore formed therein;
- a fluid routing plug situated within the bore, the fluid routing plug comprising a body having opposed first and second surfaces;
- a first valve configured to engage the first surface of the fluid routing plug;
- a second valve configured to engage the second surface of the fluid routing plug;
- a valve guide configured to prevent axial movement of the first valve, the valve guide comprising:
- a body having a central passage formed therein, the central passage configured to receive a portion of the first valve;
- and
- a cylindrical component situated in the bore and having a first end that abuts the valve guide and extends towards the fluid routing plug;
- in which the cylindrical component is a solid cylindrical shell;
- and in which the cylindrical component engages the housing.
A fluid end section, comprising:
- a housing having a longitudinal axis and a bore formed therein, the bore extending along the longitudinal axis and configured to receive a plunger;
- a valve pair situated within the bore, the valve pair comprising:
- a first valve;
- and
- a second valve;
- and
- a valve guide situated within the bore and configured to prevent axial movement of the first valve, the valve guide comprising:
- a perforated first section;
- and
- a cylindrical section having a first end engaging the first section and extending towards the second valve, in which the cylindrical section is separable from the first section at a separation point;
- in which the cylindrical section is a solid cylindrical shell;
- and in which the cylindrical section engages the housing.
A fluid end section, comprising:
- a housing having a longitudinal axis and a bore extending along the longitudinal axis;
- a first valve situated within the bore;
- a second valve situated within the bore;
- and
- a first valve guide configured to prevent axial movement of the first valve, the first valve guide comprising:
- a perforated first section;
- and
- a second section separable from the first section;
- in which the second section is a solid cylindrical shell having a first end;
- in which the second section engages the first section at the first end and extends towards the second valve;
- and
- in which the second section engages the housing.
Dependencies are inferred from the claim text.