US 2017/0321691 A1 · FLUID END OF A HIGH PRESSURE PLUNGER PUMP

Abstract

A fluid end includes a casing that defines a work space that includes a cross bore space and an inlet bore centered on an inlet bore axis and intersecting the cross bore space, the intersection of the inlet bore and the cross bore space at least partially defined by a first curved edge. An outlet bore is centered on an outlet bore axis and intersects the cross bore space, a plunger bore is centered on a plunger axis and intersects the cross bore space, a first angled surface is defined by the first curved edge, and a second angled surface is disposed adjacent the first angled surface such that the first and second angled surfaces cooperate to define a V-shaped groove having an exterior angle between 180 degrees and 270 degrees. An inlet spring retainer includes a first engagement portion, is orientable in a first orientation in which the retainer is movable from the inlet bore to the plunger bore and a second orientation in which the retainer engages the first and second angled surfaces to inhibit movement of the retainer.

Claims24

Dependent claims

A fluid end casing of a reciprocating pump, the casing arranged to receive an inlet spring retainer including a first engagement portion, the fluid end casing comprising:

a casing wall defining a work space comprising:
a cross bore space;
an inlet bore centered on an inlet bore axis and intersecting the cross bore space, the intersection of the inlet bore and the cross bore space at least partially defined by a first curved edge;
an outlet bore centered on an outlet bore axis and intersecting the cross bore space;
a plunger bore centered on a plunger axis and intersecting the cross bore space;
a first angled surface defined by the first curved edge;
and
a second angled surface disposed adjacent the first angled surface such that the first angled surface and the second angled surface cooperate to define a V-shaped groove having an exterior angle between 180 degrees and 270 degrees, wherein the V-shaped groove is arranged to receive the first engagement portion of the inlet spring retainer.

5 more elements

A fluid end casing of a reciprocating pump, the casing arranged to receive an inlet spring retainer including a first engagement portion and a second engagement portion separate from the first engagement portion, the fluid end casing comprising:

a casing wall defining a work space, the work space comprising:
an inlet bore centered on an inlet bore axis;
an outlet bore centered on an outlet bore axis that is coaxial with the inlet bore axis;
a plunger bore centered on a plunger axis, the plunger axis arranged perpendicular to the inlet bore axis;
a valve cover bore centered on the plunger axis, the inlet bore, the outlet bore, the plunger bore, and the valve cover bore cooperating to define a cross bore intersection space, wherein the casing defines an inlet bore transition area at the intersection of the inlet bore and the cross bore intersection space;
a first V-shaped groove formed adjacent the inlet bore transition area and extending partially around the inlet bore axis;
and
a second V-shaped groove formed adjacent the inlet bore transition area and extending partially around the inlet bore axis, the first V-shaped groove and the second V-shaped groove each comprise an upper surface and a lower surface, the upper surface and the lower surface of the first V-shaped groove and the second V-shaped groove defining an exterior angle between 180 degrees and 270 degrees, wherein the first V-shaped groove is arranged to receive the first engagement portion and the second V-shaped groove is arranged to receive the second engagement portion.

5 more elements

Dependencies are inferred from the claim text.

Fluid end of a high pressure plunger pump

Life of this patent

Fluid end of a high pressure plunger pump

Life of this patent

Abstract

Claims24