Truncated Bore Geometry for High-Pressure Reciprocating Pump
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Solution Overview
Problem
Conventional reciprocating plunger and piston-type pumps used in the oilfield industry face limitations in achieving high pressure ratings due to their circular bore designs, which restrict their efficiency and performance.
Innovation Solution
The implementation of fluid flow systems with partial non-circular or truncated circular bores and grooveless keepers allows for higher pressure ratings, enabling more efficient fluid handling by optimizing the bore geometry and valve retention mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If conventional circular bore designs are used in reciprocating pumps, then the pump structure is simple and easy to manufacture, but the pressure rating and operational efficiency are limited
Solution Approach 1:
The patent applies asymmetry by transitioning from conventional circular bore designs to non-circular or truncated circular bore geometries. This asymmetric shape modification allows the pump to achieve higher pressure ratings by optimizing the distribution of stresses and forces during reciprocating operation, directly resolving the contradiction between pressure rating improvement and structural simplicity.
Solution Approach 2:
The patent employs parameter changes by modifying the geometric parameters of the bore cross-section from circular to non-circular configurations. This change in geometric parameters enables enhanced pressure capabilities while the transition elements provide gradual geometry transformation, managing the complexity through systematic parameter optimization rather than abrupt design changes.
2Stress or pressure
If transition elements with truncated circumferences are implemented, then the pump achieves higher pressure ratings, but the manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the bore structure into distinct zones: conventional circular portions and transition elements with truncated circumferences. This segmentation allows different sections to be optimized for different functions - the circular portions maintain simplicity and ease of manufacture, while the transition elements provide the necessary geometric complexity for enhanced pressure ratings.
Solution Approach 2:
The transition elements serve as intermediaries between the conventional circular bores and the high-pressure non-circular bores. These intermediary structures with truncated circumferences gradually transform the geometry, enabling the system to achieve higher pressure ratings while managing manufacturing complexity through controlled transitional zones rather than abrupt geometric changes.
3Productivity
If non-circular bores are used, then operational efficiency and pressure ratings improve, but the valve retention mechanisms become more complex
Solution Approach 1:
The patent applies universality by designing valve retention mechanisms that function effectively across different bore geometries. The keepers and retaining structures are configured to accommodate both circular and non-circular bore sections, providing multi-functional capability that maintains operational efficiency while avoiding the need for completely separate retention systems for each bore type.
Data Source
AI summary
Fluid flow system including a block forming a first receiving portion having a first inner bore, a second receiving portion having a second inner bore, a third receiving portion having a third inner bore, and a fourth receiving portion having a fourth inner bore, all of which are in fluid communication with one another and form an intersecting portion. A reciprocatable piston is received in the first receiving portion. A first transition element is located between the first receiving and intersecting portions. A second transition element is located between the second receiving and intersecting portions. A third transition element is located between the third receiving and intersecting portions. A fourth transition element is located between the fourth receiving and intersecting portions. At least one transition element has transition bore truncated at opposing sides.