Threaded Fluid End Dynamic Section for High-Pressure Pump Wear
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Solution Overview
Problem
The connection between the static and dynamic sections of high-pressure pumps is prone to wear and failure due to pressure fluctuations, making maintenance and replacement of worn parts challenging.
Innovation Solution
A threaded dynamic section is attached to the static section via external threads, facilitating easier assembly, disassembly, and maintenance by reducing wear on critical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dynamic section is made as a single integrated piece with the static section, then the structural strength and sealing are improved, but the maintenance and replacement of worn parts become difficult and time-consuming
Solution Approach 1:
The fluid end is divided into separate dynamic section and static section components that can be independently removed and maintained. The dynamic section contains the dynamic internal flow bore and is designed as a detachable unit from the static section, allowing worn parts to be accessed and replaced without dismantling the entire pump assembly.
2Strength
If the connection between static and dynamic sections is made rigid and permanent, then the pressure resistance is improved, but the wear on connection parts increases and replacement becomes challenging
Solution Approach 1:
The connection between the dynamic section and static section is designed to be dynamically separable rather than permanently fixed. The dynamic section can be detached from the static section when maintenance is required, allowing worn connection parts to be replaced without compromising the pressure resistance during normal operation.
3Productivity
If the dynamic section is designed with complex internal flow bores for high-pressure performance, then the pump efficiency is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The complex dynamic internal flow bore is contained within the separate dynamic section, which can be manufactured independently using specialized processes without affecting the static section. This segmentation allows for optimized manufacturing of each component with complex internal geometries while maintaining overall pump efficiency.
Data Source
AI summary
A high-pressure hydraulic fracturing pump. The pump is in-line in orientation, with a static section having a high-pressure discharge chamber and a dynamic section having a dynamic internal bore threaded to the static section. A fluid routing plug is disposed within a bore which includes the dynamic internal bore. The pump is designed for ease of access and for reducing wear. Large, external threads on the dynamic section pair with internal threads on the static section to reduce wear associated with repeated pressurization of hydraulic fracturing fluid found within the pump. Seals and wear rings are found at a nose of the dynamic section to further prevent wear and damage.