Plastically Deformable Securing Elements for Gas Cylinder Bundles

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Solution Overview

Problem

Existing compressed gas cylinder bundles are heavy and expensive due to the need for a rigid frame design to absorb fall forces elastically, which complicates handling and manufacturing, while still requiring enhanced safety features to prevent damage during transport and operation.

Innovation Solution

Incorporating plastically deformable securing elements on the frame structure to form a deformation zone that absorbs impact energy, reducing the need for a rigid frame and allowing for a lighter, less costly construction by transferring the 'crumple zone' principle from motor vehicle technology to gas cylinder bundles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the frame construction is designed to be very rigid and massive to elastically absorb fall forces, then the safety of the gas cylinders is improved, but the weight and manufacturing cost of the bundle frame increase significantly

Engineering Contradiction:
Improvesafety of gas cylindersVSAvoidweight of bundle frame
Core Design Contradiction:
ReliabilityVSWeight of stationary object

Solution Approach 1:

The frame construction is divided into two functional parts: a rigid load-bearing frame structure that provides structural support and accommodation for cylinders, and separate plastically deformable securing elements that attach to the frame and provide impact absorption. This segmentation allows each component to be optimized for its specific function without the need for the entire frame to be massively rigid.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Plastically deformable securing elements are pre-installed on the frame construction to provide impact absorption before any fall occurs. These elements are positioned to engage with the frame and absorb impact forces through controlled plastic deformation, cushioning the cylinders against damage during transport or accidental drops.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Stability of the object's composition

If the frame construction is made very rigid and massive to prevent cylinder movement during transport, then the stability of the bundle is improved, but the ease of handling and operation deteriorates due to increased weight

Engineering Contradiction:
Improvestability of bundleVSAvoidease of handling
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The securing system is segmented into the rigid frame structure that provides stability and the separate plastically deformable securing elements that provide impact absorption. This allows the frame to be optimized for stability while the securing elements handle impact forces, resulting in a lighter overall structure that is easier to handle.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The securing elements are designed with specific material properties and geometric characteristics that allow them to deform plastically under impact loads. By changing the material parameters and geometric parameters of these elements, they can absorb impact energy effectively while keeping the frame construction lightweight and easy to handle.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If the frame construction is designed to be very rigid to prevent cylinder damage during falls, then the reliability is improved, but the manufacturing cost increases due to the need for massive and stable load-bearing parts

Engineering Contradiction:
Improveprotection of cylinders during fallsVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The protection system is segmented into the rigid frame structure that provides structural support and the plastically deformable securing elements that provide impact absorption. This segmentation allows the frame to be manufactured with standard materials and processes, while the securing elements can be produced more economically through forming or extrusion processes, reducing overall manufacturing cost.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The plastically deformable securing elements are designed as sacrificial components that can be replaced after they have absorbed impact forces and undergone plastic deformation. These elements are made from relatively inexpensive materials and can be economically replaced rather than repairing or replacing the entire frame construction, reducing long-term manufacturing and maintenance costs.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Weight of stationary object

If plastically deformable securing elements are added to the frame construction to absorb impact energy, then the weight of the frame can be reduced, but the device complexity increases due to the additional components

Engineering Contradiction:
Improveweight of frameVSAvoidcomplexity of bundle construction
Core Design Contradiction:
Weight of stationary objectVSDevice complexity

Solution Approach 1:

The plastically deformable securing elements are integrated with the rigid frame structure through direct attachment or incorporation. The securing elements are positioned to engage with specific features of the frame construction, creating a unified structure that combines rigid support with flexible impact absorption without requiring separate complex mounting mechanisms.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The plastically deformable securing elements serve multiple functions: they provide impact absorption during falls, prevent cylinder movement during transport, and can be designed to also serve as lifting or handling features. This multi-functionality reduces the need for additional separate components, simplifying the overall device complexity while maintaining reduced weight.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 design effectively reduces the acceleration and energy transfer during impacts, protecting the cylinders without significant deformation of the frame, resulting in weight savings and cost reductions while maintaining safety standards.

Implementation Method 1

the securing elements are made from a material that deforms plastically in the event of an impact. Due to the deformation of the safety elements, the acceleration occurring in the event of an impact or impact is reduced and a large part of the impact energy is absorbed

Methodology Applied
Scientific EffectPlastic deformation: Plasticity

Data Source

PatentEP2904307B1Compressed gas cylinder bundle
Publication Date: 2018.07.04 MESSER GASPACK
  • EP2904307B1 patent drawingFigure 1
  • EP2904307B1 patent drawingFigure 2a~2b

AI summary

In compressed gas cylinder bundles according to the prior art, the mechanical energy arising in the event of impacts or falls must be absorbed elastically by the frame elements of the bundle frame in order to protect compressed gas cylinders, pipes and fittings against damage. The bundle frames are built correspondingly solidly, have a high weight and are difficult to handle. According to the invention, the bundle frame of a compressed gas cylinder bundle is fitted with safety elements which deform plastically in the event of an impact or fall and in this way absorb at least a part of the forces arising. In this way, the bundle frame can be designed to be lighter, maintaining the same level of safety. Loops, collars or horns are provided as the elastically deformable elements.