Fluid end of a high pressure plunger pump

  • US 9,732,746 B2
  • Filed: 05/16/2016
  • Issued: 08/15/2017
  • Est. Priority Date: 09/24/2012
  • Status: Active Grant
First Claim
Patent Images

1. A fluid end of a plunger pump comprising:

  • a casing defining at least one working space, the at least one working 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, the plunger axis and the inlet bore axis cooperating to define a center plane, wherein the intersection of the plunger bore and inlet bore is at least partially defined by a first curved edge completely disposed on a first side of the center plane and a second curved edge completely disposed on a second side of the center plane opposite the first side of the center plane;

    a first V-shaped groove partially defined by the first curved edge and positioned on the first side of the center plane and a second V-shaped groove partially defined by the second curved edge and positioned on the second side of the center plane, the first V-shaped groove and the first V-shaped groove and the second V-shaped groove each comprise an upper surface and a lower surface that intersect at a fillet, 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; and

    an inlet spring retainer including a first engagement portion and a second engagement portion, the inlet spring retainer orientable in a first orientation in which the inlet spring retainer is movable from the inlet bore to the plunger bore and a second orientation in which the inlet spring retainer engages the first curved edge and the second curved edge to inhibit movement of the inlet spring retainer from the inlet bore to the plunger bore.

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