Double Barrel Hazardous Goods Weld Seam Stability
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Solution Overview
Problem
Existing double barrels for hazardous goods lack sufficient stability and operational safety, particularly during transport, due to inadequate structural reinforcement and force distribution.
Innovation Solution
A double barrel design featuring a plastic outer barrel with thicker circumferential weld seams and an inner barrel with elastic annular disks and a fixed connection to the outer barrel, creating a stable and shock-absorbing air envelope, while maintaining a lightweight and symmetric structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the outer barrel is made from a single piece of plastic, then the structure is simple and production is easy, but the stability and force resistance are insufficient for hazardous goods transport
Solution Approach 1:
The outer barrel is divided into two separate barrel parts that are connected through a circumferential plastic weld seam. This segmentation allows each part to be manufactured independently with optimized wall thickness distribution, while the weld seam creates a reinforced connection that improves overall stability and force resistance compared to a single-piece construction.
2Strength
If the wall thickness is increased throughout the entire outer barrel, then the stability and force resistance are improved, but the weight increases significantly
Solution Approach 1:
The wall thickness of the outer barrel is optimized locally rather than uniformly. The wall thickness varies along the height of the barrel, with thicker sections positioned where forces are most critical (near the circumferential weld seam and at the ends) and thinner sections where less structural support is needed. This local optimization maintains stability and force resistance while minimizing overall weight.
3Ease of manufacture
If the circumferential plastic weld seam is positioned in the middle of the barrel height, then the structure is symmetric and easy to manufacture, but the force distribution and stability are compromised
Solution Approach 1:
The circumferential plastic weld seam is positioned asymmetrically, specifically in the lower third of the outer barrel height rather than at the center. This asymmetric positioning optimizes the force distribution by placing the weld seam in a region that better handles the stress patterns during transport and handling of hazardous goods, improving overall stability while remaining manufacturable.
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
The design enhances stability and operational safety by reliably absorbing forces and reducing the risk of breakage, even under high impact, while maintaining a lightweight and economically efficient construction.
Implementation Method 1
the first and the second barrel part are firmly connected to each other via the connecting areas in an assembled state by means of a circumferential plastic weld seam
Implementation Method 2
creating a stable and shock-absorbing air envelope
Data Source
AI summary
A double barrel for hazardous goods with an outer barrel of plastic and an inner barrel of plastic received in the outer barrel. The body of the outer barrel is formed of a first barrel part and a second barrel part. The first barrel part has a first connecting area and the second barrel part has a second connecting area that is complementary to the first connecting area. The first and the second barrel part are firmly connected to each other via the connecting areas in an assembled state by means of a circumferential plastic weld seam.