Diverter Assembly Layout for Plunger Pump Valve Box Fatigue
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The current valve box in plunger pumps experiences stress concentration and fatigue cracks due to its cross-intersecting structure, leading to reduced service life.
Innovation Solution
A diverter assembly with independent liquid drainage and inlet holes, utilizing valve bodies and rubbers to ensure non-interfering processes and reduce stress concentration by aligning liquid flow directions with the plunger's axial motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the valve box uses a cross-intersecting structure to accommodate the plunger and valve assembly, then the functional requirements are met, but stress concentration occurs leading to fatigue cracks and reduced service life
Solution Approach 1:
The patent divides the valve box structure into separate, non-intersecting flow paths. The liquid inlet hole and liquid drainage hole are positioned independently without crossing each other, eliminating the stress concentration zone created by intersecting holes while maintaining all necessary functional capabilities for plunger pump operation.
2Ease of operation
If the liquid inlet hole and liquid drainage hole are positioned to accommodate valve assemblies, then valve functionality is achieved, but stress concentration occurs at intersecting lines
Solution Approach 1:
The patent resolves the spatial conflict by redistributing the liquid inlet and drainage holes in different spatial arrangements that do not require intersection. The holes are positioned to accommodate valve assemblies while maintaining structural integrity by avoiding the creation of intersecting stress concentration zones in the valve box wall.
Data Source
AI summary
This disclosure describes a diverter assembly, a valve box, and a plunger pump. The diverter assembly includes a diverter, a first valve body, a second valve body, first valve rubber, and second valve rubber. The diverter includes liquid drainage and inlet holes. The liquid drainage hole is communicated with first and second end surfaces facing away from each other in an axial direction of the diverter, and the liquid inlet hole is communicated with a side surface and the first end surface. The first valve body is configured to block the liquid inlet hole and to communicate a communication hole and the liquid drainage hole. The second valve body is configured to block the liquid drainage hole. The first and second valve rubber is configured to hermetically connect the first valve body and the first end surface, and to seal the second valve body and the second end surface, respectively.