Offset valve bore in a reciprocating pump

Patent metadata

Field	Value
Publication number	US-2018030973-A1
Application number	US-201715728180-A
Country	US
Kind code	A1
Filing date	Oct 9, 2017
Priority date	Dec 9, 2010
Publication date	Feb 1, 2018
Grant date	—

Abstract

A fluid end 15 for a multiple reciprocating pump assembly 12 comprises at least three plunger bores 61 or 91 each for receiving a reciprocating plunger 35 , each plunger bore having a plunger bore axis 65 or 95 . Plunger bores being arranged across the fluid head to define a central plunger bore and lateral plunger bores located on either side of the central plunger bore. Fluid end 15 has suction valve bores 59 or 89 , each suction valve bore receiving a suction valve 41 and having a suction valve bore axis 63 or 93 . Discharge valve bores 57 or 87 , each discharge valve bore receiving a discharge valve 43 and having a discharge valve bore axis 63 or 93 . The axes of at least one of suction and discharge valve bores is inwardly offset in the fluid end from its respective plunger bore axis.

First claim

1 - 14 . (canceled)

15 . An apparatus comprising a fluid end, the fluid end comprising:
opposing first and second side portions horizontally spaced from each other; a pump chamber horizontally located between the first and second side portions, wherein fluid is adapted to be pressurized within the pump chamber; a first flowpath located below the pump chamber and defining a first longitudinal center axis extending between opposite ends of the first flowpath, wherein the fluid is adapted to be conveyed into the pump chamber via the first flowpath; a first plunger bore in fluid communication with the pump chamber, the first plunger bore defining a second longitudinal axis along which a first plunger is adapted to reciprocate, wherein the second longitudinal axis is perpendicular to the first longitudinal axis; and a second flowpath located above the pump chamber and opposing the first flowpath, the second flowpath defining a third longitudinal center axis that is perpendicular to the second longitudinal center axis and extends between opposite ends of the second flowpath, wherein the fluid is adapted to be conveyed out of the pump chamber via the second flowpath; wherein the second longitudinal center axis is horizontally spaced from at least one of the first and third longitudinal center axes defined by the first and second flowpaths, respectively, such that a plunger horizontal spacing is defined between the second longitudinal center axis and the at least one of the third and first longitudinal center axes; and wherein:
the at least one of the first and third longitudinal center axes and the corresponding one of the first and second flowpaths including said ends thereof are located horizontally between:
the second longitudinal center axis, and
an additional longitudinal center axis along which an additional plunger is adapted to reciprocate, the additional longitudinal center axis being spaced in a parallel relation from the second longitudinal center axis and being located horizontally between the second side portion and the second longitudinal center axis,

the second longitudinal center axis is located closer to the first side portion of the fluid end than the second side portion, and
a first horizontal distance between the first side portion and the at least one of the first and third longitudinal center axes is greater than a second horizontal distance between the first side portion and the second longitudinal center axis.

16 . The apparatus of claim 15 , further comprising a first valve located in the first flowpath, wherein the first valve is actuable between a first closed position and a first open position.

17 . The apparatus of claim 16 , further comprising a second valve that is located in the second flowpath, and that is opposed to the first valve located in the first flowpath, wherein the second valve is actuable between a second closed position and a second open position.

18 . The apparatus of claim 17 , wherein the fluid is adapted to be conveyed into the pump chamber, via the first flowpath, when the first valve is in the first open position and the second valve is in the second closed position.

19 . The apparatus of claim 18 , wherein the fluid is adapted to be conveyed out of the pump chamber, via the second flowpath, when the first valve is in the first closed position and the second valve is in the second open position.

20 . The apparatus of claim 19 , further comprising the first plunger that is adapted to reciprocate along the second longitudinal axis defined by the first plunger bore;
wherein the first plunger is adapted to reciprocate and thus move away from, and toward, the pump chamber; and wherein the first valve located below the pump chamber is adapted to be actuated to the first open position in response to the plunger moving away from the pump chamber.

21 . The apparatus of claim 20 , wherein the movement of the plunger away from the pump chamber is adapted to create a pressure differential across the first valve so that a first pressure in a portion of the first flowpath vertically located below the first valve in its entirety is greater than a second pressure in at least a portion of the pump chamber vertically located above the first valve in its entirety.

22 . The apparatus of claim 20 , wherein the second valve located above the pump chamber is adapted to be actuated to the second open position in response to the plunger moving toward the pump chamber.

23 . The apparatus of claim 15 , further comprising a crankshaft housing connected to the fluid end; and a plurality of stay rods connecting the crankshaft housing to the fluid end.

24 . The apparatus of claim 15 , wherein the third longitudinal center axis is coaxial with the first longitudinal center axis so that:
the plunger horizontal spacing is defined between the second longitudinal center axis and both of the coaxial third and first longitudinal center axes; and the coaxial first and third longitudinal center axes and the first and second flowpaths including said ends thereof are located horizontally between:
the second longitudinal center axis, and
the additional longitudinal center axis along which the additional plunger is adapted to reciprocate;
and the first horizontal distance is defined between the first side portion and both of the coaxial first and third longitudinal center axes.

25 . The apparatus of claim 15 , wherein the second longitudinal center axis is horizontally spaced from the first longitudinal center axis so that:
the plunger horizontal spacing is defined between the second longitudinal center axis and the first longitudinal center axis; and the first longitudinal center axis and the first flowpath including said ends thereof are located horizontally between:
the second longitudinal center axis, and
the additional longitudinal center axis along which the additional plunger is adapted to reciprocate,
and the first horizontal distance is defined between the first side portion and the first longitudinal center axis.

26 . The apparatus of claim 15 , wherein the second longitudinal center axis is horizontally spaced from the third longitudinal center axis so that:
the plunger horizontal spacing is defined between the second longitudinal center axis and the third longitudinal center axis; and the third longitudinal center axis and the second flowpath including said ends thereof are located horizontally between:
the second longitudinal center axis, and
the additional longitudinal center axis along which the additional plunger is adapted to reciprocate,
and the first horizontal distance is defined between the first side portion and the third longitudinal center axis.

27 . The apparatus of claim 15 , further comprising:
a suction manifold connected to the fluid end.

28 . An apparatus, comprising:
a fluid end, comprising:
opposing first and second side portions horizontally spaced from each other;
a pump chamber horizontally located between the first and second side portions, wherein fluid is adapted to be pressurized within the pump chamber;
a first flowpath located below the pump chamber and defining a first longitudinal center axis extending between opposite ends of the first flowpath, wherein the fluid is adapted to be conveyed into the pump chamber via the first flowpath;
a first plunger bore in fluid communication with the pump chamber, the first plunger bore defining a second longitudinal axis along which a first plunger is adapted to reciprocate, wherein the second longitudinal axis is perpendicular to the first longitudinal axis; and
a se

Assignees

• Spm Flow Control Inc

Inventors

• Bayyouk Jacob A
• MACKENZIE Donald

Classifications

• F04B47/00

  Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (by using positive or negative pressurised fluid medium acting directly on the liquid to be pumped F04F1/00) · CPC title

• F04B1/0456

  Cylindrical · CPC title

• F04B27/00

  Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders (multi-stage pumps specially adapted for elastic fluids F04B25/00) · CPC title

• F04B53/16

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title

• F04B23/06

  the pumps being all of reciprocating positive-displacement type · CPC title