Coupling Arrangement for High Pressure Fluid Pump Plunger
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Solution Overview
Problem
Existing high-pressure pumps require extensive disassembly to remove the plunger, which is time-consuming and labor-intensive, as the plunger must be pulled axially away from the pump's power end and fluid end, necessitating the removal of multiple components and bolts.
Innovation Solution
A coupling arrangement that creates a longitudinal space between the plunger and plunger adaptor, allowing for the plunger to be removed through a well in the pump frame without disconnecting the power end assembly from the frame, enabling easier access and minimal disassembly by sliding the plunger away from the fluid end towards the power end.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the plunger is tightly coupled to the plunger adaptor without axial space, then the structural integrity and sealing are improved, but the ease of maintenance and component replacement deteriorates due to extensive disassembly requirements
Solution Approach 1:
The coupling arrangement is divided into multiple segments including a coupling body, plunger adaptor, and retention members that can be independently accessed. The axial space allows the plunger to be segmented from the drive mechanism while maintaining connection through the coupling arrangement, enabling maintenance without complete disassembly.
Solution Approach 2:
The plunger can be extracted axially from the pump chamber through the well while remaining connected to the power end assembly. The coupling arrangement allows the plunger to be taken out of the fluid end for maintenance while keeping the overall assembly intact, reducing disassembly requirements.
2Strength
If the plunger is tightly coupled to the plunger adaptor without axial space, then the mechanical connection strength is improved, but the time required for plunger removal and replacement increases
Solution Approach 1:
The coupling arrangement is pre-configured with retention members and axial clearance that enable quick release of the plunger. The space is preliminarily designed to accommodate plunger movement during maintenance operations, allowing rapid removal and replacement without extensive disassembly or reassembly steps.
3Volume of moving object
If the plunger is tightly coupled to the plunger adaptor without axial space, then the compactness of the assembly is improved, but the accessibility for maintenance operations deteriorates
Solution Approach 1:
The coupling arrangement utilizes the axial dimension to create access pathways for maintenance. The axial space between plunger and adaptor allows maintenance personnel to access and remove the plunger from the fluid end through the well, providing a new dimensional pathway for maintenance operations without increasing the overall footprint of the pump assembly.
Data Source
AI summary
A coupling for a pump connects a plunger to a plunger adaptor. The coupling provides a space between an end of the plunger and an end of the adaptor. Upon disconnecting the plunger from the adaptor, the space provides for removal of the plunger from and through a well of the pump.