Pump Fluid End Suction Valve Access Design
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Solution Overview
Problem
Reciprocating pumps used in oil and gas operations face challenges in accessing pump components due to high cyclical pressures, leading to wear and maintenance difficulties, particularly in wellbore operations where components need frequent servicing.
Innovation Solution
The design of a reciprocating apparatus with a pump fluid end that allows the suction valve body, suction valve seat, and reciprocating element to be removed through the discharge valve seat, facilitating maintenance without requiring the removal of the discharge valve seat, and featuring a cross-bore or concentric bore configuration with specific diameter relationships between valve components for easy access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If the discharge valve seat is made compact for high-pressure operation, then pressure resistance is improved, but access to suction valve components becomes difficult
Solution Approach 1:
The pump head is divided into distinct valve assemblies (suction valve assembly and discharge valve assembly) that can be independently accessed. The suction valve assembly is positioned in a separate location from the discharge valve seat, allowing maintenance personnel to access and service suction valve components without interfering with the high-pressure discharge valve structure.
Solution Approach 2:
The suction valve assembly is positioned in a different spatial dimension or orientation relative to the discharge valve seat. This dimensional separation creates independent access paths, allowing technicians to reach suction valve components through different access points than those required for the discharge valve, thereby maintaining compact high-pressure design while enabling component access.
2Strength
If traditional pump design is used, then structural integrity is maintained, but maintenance time increases
Solution Approach 1:
The valve assemblies are segmented into modular units (suction valve assembly and discharge valve assembly) that can be independently removed and serviced. This segmentation allows maintenance personnel to access and replace specific valve components without disassembling the entire pump structure, thereby reducing maintenance time while preserving overall structural integrity through proper reassembly procedures.
Solution Approach 2:
The pump design incorporates pre-configured access paths and positioning features that facilitate straightforward removal and installation of valve assemblies. By designing the structure with maintenance accessibility in mind from the outset, the patent enables quick component replacement without requiring complex disassembly procedures, thus reducing maintenance time while maintaining structural strength.
Data Source
AI summary
A pump fluid end comprising a discharge valve assembly comprising a discharge valve seat and a discharge valve body, a suction valve assembly comprising a suction valve seat and a suction valve body, and a reciprocating element, wherein an inside diameter of the discharge valve seat is greater than an outside diameter of the suction valve body, the suction valve seat, the reciprocating element, or a combination thereof.