Diaphragm Accumulator Weld Seam for Simpler High-Strength Joining
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Solution Overview
Problem
Existing hydraulic accumulator designs require complex and costly production processes to achieve a high-strength welded joint between connection elements and the accumulator housing, particularly due to the need for fillet welds and internal smooth weld seams.
Innovation Solution
The solution involves using a laser or electron beam welding process to form a thin, linear weld seam directly at the transition point between the connection element and the accumulator housing, eliminating the need for filler materials and fillet welds, and allowing for production from the outside, simplifying the process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fillet welds with filler materials are used to connect the connection element to the accumulator housing, then a strong welded joint is achieved, but the manufacturing complexity and cost increase
Solution Approach 1:
The invention extracts and eliminates the filler material from the welding process. Instead of using fillet welds with filler materials, the patent employs seam welding that joins the connection element directly to the housing wall without any filler material, thereby simplifying the manufacturing process while maintaining joint strength
Solution Approach 2:
The invention replaces the mechanical fillet welding process with a seam welding process. The transition point is designed with a specific geometry that enables direct seam welding between the connection element and housing wall, substituting the complex fillet weld mechanism with a simpler seam weld
2Strength
If internal smooth weld seams are produced from inside the housing, then a tight fit against transverse forces is achieved, but the production process becomes complex and cost-intensive
Solution Approach 1:
The invention inverts the welding approach by performing the weld from the outside rather than from the inside. The transition point geometry is designed to enable external access for the welding process, eliminating the need for complex internal welding operations while still achieving resistance to transverse forces
Solution Approach 2:
The invention changes the dimension of access for the welding process. Instead of requiring internal access through the housing, the transition point is designed to allow welding from the external dimension, simplifying the manufacturing process
3Strength
If filler materials are used in the welded joint, then a strong connection is achieved, but corrosion risks increase
Solution Approach 1:
The invention extracts and eliminates filler materials from the welded joint. The connection element and housing wall are joined directly through seam welding without any filler material, thereby removing the source of potential corrosion while maintaining connection strength through the designed transition point geometry
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach results in a strong, reliable, and cost-effective welded joint that reduces manufacturing complexity and avoids potential corrosion risks associated with filler materials, while also enabling efficient production of mass-produced parts.
Implementation Method 1
The solution involves using a laser or electron beam welding process to form a thin, linear weld seam directly at the transition point between the connection element and the accumulator housing
Implementation Method 2
The solution involves using a laser or electron beam welding process to form a thin, linear weld seam directly at the transition point between the connection element and the accumulator housing
Data Source
AI summary
The disclosure relates to an hydraulic accumulator, in particular a diaphragm accumulator, having an accumulator housing and a separating element disposed therein, which separates two media spaces from each other, wherein a weld seam is formed by a laser or electron beam welding process without any filler materials, in that at least a part of the wall parts delimiting the transition point are melted to form the weld seam, which closes off the transition point towards the surroundings, in a manner that is free of protrusions with respect to an outer circumferential surface of a connection element.