Detachable Shoulder Cover Structure for Impact-Resistant Pressure Vessels
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Solution Overview
Problem
Pressure vessels, particularly their dome-shaped shoulder parts, are vulnerable to both internal pressure and external impacts, leading to potential damage.
Innovation Solution
A protective cover is provided for the shoulder part of a pressure vessel, comprising an impact resistance member made of impact-absorbing foam and an outer shell, detachably coupled using a fixing part and insertion part, which includes a coupling groove and protrusion mechanism for easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the shoulder part is made thinner to reduce weight, then weight reduction is achieved, but strength and impact resistance deteriorate
Solution Approach 1:
The patent applies composite materials by combining the foam impact resistance member (made of expandable plastic particles) with the liner material to form a protective structure. This composite construction provides both weight reduction and enhanced impact resistance, resolving the contradiction between lightweight design and structural strength.
Solution Approach 2:
The foam impact resistance member is positioned beforehand at the shoulder part to provide preemptive protection against impact. The expandable plastic particles create a cushioning effect that absorbs impact energy before it reaches the thin-walled liner, allowing weight reduction without sacrificing strength.
2Strength
If the shoulder part is reinforced with thick protective material, then impact resistance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent uses porous foam material made of expandable plastic particles as the impact resistance member. This porous structure provides effective impact absorption with reduced material quantity and simplified construction, avoiding the complexity of thick solid protective layers while maintaining high impact resistance.
Solution Approach 2:
The foam material undergoes parameter change through expansion of plastic particles, transforming from a compact state to an expanded cushioning structure. This parameter change enables the material to provide thick protective properties without requiring physically thick layers, simplifying the overall device structure.
3Ease of repair
If the protective cover is made detachable for easy replacement, then ease of repair is improved, but reliability of coupling may deteriorate
Solution Approach 1:
The coupling mechanism is designed with dynamic characteristics, allowing the protective cover to be detachably coupled and uncoupled as needed. The coupling member enables controlled separation and reattachment while maintaining reliable connection during normal operation, balancing ease of repair with coupling reliability.
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 solution effectively reinforces the shoulder part, preventing damage from external impacts and maintaining sealability during replacement, thus enhancing durability and convenience.
Implementation Method 1
an impact resistance member made of impact-absorbing foam
Implementation Method 2
a push bar rotatably mounted on the outer shell to elastically press the outer surface of the impact resistance member or return the impact resistance member to the original position
Data Source
AI summary
The present invention relates to a protective cover for a shoulder part of a pressure vessel, and more particularly, to a protective cover coupled to a shoulder part of a pressure vessel to protect the shoulder part from friction or impact.