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.
Claims21
A fluid end section, comprising:
- a housing having a longitudinal axis and a longitudinal first bore, the longitudinal first bore extending through the housing along the longitudinal axis;
- a second bore formed in the housing and intersecting the longitudinal first bore at a second bore intersection;
- a third bore formed in the housing and intersecting the longitudinal first bore at a third bore intersection;
- wherein the longitudinal first bore is defined by an inwardly-disposed surface having:
- a first surface section defined by a first maximum diameter, the first surface section being disposed on a first side of the third bore intersection and the second bore intersection;
- a second surface section defined by a second maximum diameter, the second surface section being disposed between the second bore intersection and the third bore intersection;
- and
- a third surface section defined by a third maximum diameter, the third surface section being disposed between the third bore intersection and the second surface;
- wherein the second maximum diameter is greater than the third maximum diameter, and the third maximum diameter is greater than the first maximum diameter;
- and further comprising a fluid routing plug installed within the longitudinal first bore and comprising:
- a body extending between opposed first and second surfaces joined by an outer peripheral surface;
- and
- a plurality of non-intersecting fluid passages formed in the body;
- a first insert disposed at the first surface of the fluid routing plug;
- and
- a second insert disposed at the second surface of the fluid routing plug;
- wherein the first insert and second insert are formed of a material harder than the fluid routing plug.
Dependencies are inferred from the claim text.