Pressure Vessel Protective Member Layout for Correct Panel Attachment
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Solution Overview
Problem
Existing pressure vessel manufacturing techniques fail to accurately differentiate between protective members with and without heat-shielding functions, leading to potential incorrect attachment and degradation of functions, especially when a fusible plug valve is present.
Innovation Solution
The use of recesses with different shapes and positions on protective members allows for clear differentiation and correct attachment, ensuring that the appropriate protective member with heat-shielding performance is attached to the correct panel, preventing functional hindrance of the fusible plug valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective members with different functions (heat-shielding and non heat-shielding) are used in panels at both ends, then the heat-shielding function can protect against high temperatures, but it becomes difficult to differentiate and correctly attach the protective members to the appropriate panels
Solution Approach 1:
The patent introduces asymmetric features (protrusions and recesses) on the protective members to enable visual and physical differentiation. Specifically, the first protective member has a protrusion on its outer surface, while the second protective member has a recess at the position corresponding to the protrusion. This asymmetric design allows workers to easily identify which protective member should be attached to which panel, preventing incorrect attachment while maintaining the different functional properties (heat-shielding vs. non heat-shielding) of the protective members
2Reliability
If the protective member with heat-shielding function is incorrectly attached to the panel with fusible plug valve, then the heat-shielding effect may interfere with the valve's operation, but adding differentiation features should not significantly increase manufacturing complexity
Solution Approach 1:
The differentiation features (protrusions and recesses) are designed to be simple geometric modifications to the protective member structure. The protrusion on the first protective member and the corresponding recess on the second protective member are straightforward structural elements that do not significantly complicate the manufacturing process. These simple asymmetric features effectively prevent incorrect attachment to panels with fusible plug valves, thereby protecting valve function without substantially increasing device complexity
Solution Approach 2:
The protrusion and recess act as intermediary features that mediate between the protective member and the panel. During attachment, the protrusion on one protective member fits into the recess on the other, serving as a physical guide and barrier that prevents incorrect positioning. This intermediary mechanism ensures that the protective member with heat-shielding function is not incorrectly attached to the panel with the fusible plug valve, thereby protecting the valve's operational integrity
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 solution ensures accurate attachment of protective members, maintaining their intended functions and reducing the risk of incorrect attachment, thereby enhancing the manufacturing process and performance of high-pressure gas containers.
Implementation Method 1
when the protective member is exposed to high temperatures, the foamable polyurethane including expandable graphite forms foam and rapidly expands. As a result, the heat-shielding effect is exhibited.
Implementation Method 2
When exposed to high temperatures, the fusible plug valve partially fuses, opens the valve, and communicates the inside and outside of the pressure vessel.
Data Source
AI summary
A pressure vessel includes a vessel main body, a first protective member, and a second protective member. The vessel main body is configured to contain gas inside. The second protective member is configured to exhibit performance that is different from that of the first protective member. One of the first protective member and the second protective member has recesses that the other one of the first protective member and the second protective member does not have at an end on a peak of a domical panel side provided with the one of the first protective member and the second protective member.