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US 12,710,036 B2Granted
Fluid end with transition surface geometry
AssigneeGd Energy Products, LLC
InventorsKonner Casey Kay, Paul Douglas Cary, Vadim Kachkovskiy
Life of this patent
Estimating the term…
Abstract
A fluid end of a reciprocating pump includes multiple bores formed therein, and adjacent bores intersect each other. The intersection of two adjacent bores forms an intersection corner, which is where a concentration of high stress occurs during operation of the pump. A novel geometrical shape or geometry of the intersection corner reduces the concentration of stress on the intersection corners. By improving the shape and geometry of the intersection corner, the impact and concentration of the stress can be reduced, thereby improving or lengthening the lifetime of the material in that intersection corner of the fluid end.
Claims20
A fluid end of a reciprocating pump, the fluid end comprising:
- a housing defining:
- a first bore with a first inner surface that transitions from a first portion with a first inner diameter to a second portion with a second inner diameter, the second inner diameter being larger than the first inner diameter, the first bore having a first centerline;
- a second bore having a second inner surface that transitions from a third portion with a third inner diameter to a fourth portion with a fourth inner diameter, the fourth inner diameter being larger than the third inner diameter, the second bore intersecting with the first bore at a first intersection corner, the second bore having a second centerline;
- a third bore intersecting with the second bore at a second intersection corner;
- the third bore having a third inner surface, the third bore having a third centerline, the third centerline being colinear with the first centerline;
- and
- a first intersection line with a first portion that extends along the first inner surface of the first bore and a second portion that extends along the third inner surface of the third bore, the first portion of the first intersection line and the second portion of the first intersection line are offset from each other, the first portion of the first intersection line terminates at the second centerline and the second portion of the first intersection line terminates at the second centerline at a location offset from where the first portion of the first intersection line terminates at the second centerline,
- wherein the first intersection corner defines a first transition area having a first transition surface where the second portion of the first inner surface and the fourth portion of the second inner surface intersect to form a raised feature, and the first transition surface is a machinable transition feature that overlaps both of the first bore and the second bore.
5 more elements
A fluid end of a reciprocating pump, the fluid end comprising:
- a housing defining:
- a first bore having a first portion with a first inner surface defining a first inner diameter and a second portion with a second inner surface defining a second inner diameter, the second inner surface defined by a first radius, the first portion transitions to the second portion, and the second inner diameter is larger than the first inner diameter, the first bore having a first centerline;
- a second bore being oriented substantially perpendicularly relative to the first bore, the second bore having its own inner surface defined by a second radius different from the first radius, the second bore intersecting with the first bore at a first intersection corner located in a cross-bore of the housing, the second bore has a third portion with a third inner diameter and a fourth portion with a fourth inner diameter, the third portion transitions to the fourth portion, and the fourth inner diameter is larger than the third inner diameter, the fourth portion of the second bore and the second portion of the first bore intersecting at the first intersection corner, the second bore having a second centerline;
- a third bore intersecting with the second bore at a second intersection corner;
- the third bore having a third inner surface, the third bore having a third centerline, the third centerline being colinear with the first centerline;
- and
- a first intersection line with a first portion that extends along the second inner surface of the first bore and a second portion that extends along the third inner surface of the third bore, the first portion of the first intersection line and the second portion of the first intersection line are offset from each other, the first portion of the first intersection line terminates at the second centerline at a first point and the second portion of the first intersection line terminating at the second centerline at a second point, the second point being offset from the first point,
- wherein the first intersection corner defines a first transition area having a first transition surface that is a machinable transition feature that overlaps both of the first bore and the second bore, and the second inner surface of the first bore and the inner surface of the second bore converge with each other at a convex point at the first transition area.
5 more elements
A method of manufacturing a fluid end of a reciprocating pump, the fluid end including a housing, the method comprising the steps of:
- machining a first bore in the housing, the first bore having a first inner surface that transitions from a first portion with a first inner diameter to a second portion with a second inner diameter, the second inner diameter being larger than the first inner diameter, the first bore having a first centerline;
- machining a second bore in the housing, the second bore having a second inner surface that transitions from a third portion with a third inner diameter to a fourth portion with a fourth inner diameter, the fourth inner diameter being larger than the third inner diameter, the fourth portion of the second inner surface intersecting with the second portion of the first inner surface at a first intersection corner and collectively forming a raised feature, the second bore having a second centerline;
- machining a third bore in the housing, the third bore intersecting with the second bore at a second intersection corner, the third bore having a third inner surface, the third bore having a third centerline, the third centerline being colinear with the first centerline;
- and
- hand finishing the raised feature by accessing the first intersection corner through a bore of the fluid end, wherein the steps of machining the first bore in the housing and machining the third bore in the housing form a first intersection line with a first portion that extends along the first inner surface of the first bore and a second portion that extends along the third inner surface of the third bore, the first portion of the first intersection line and the second portion of the first intersection line are offset from each other, the first portion of the first intersection line terminating at the second centerline at a first point and the second portion of the first intersection line terminating at the second centerline at a second point, the second point being offset from the first point.
2 more elements
Dependencies are inferred from the claim text.