Pressure Vessel Protective Member Layout for Correct Valve-Side Attachment
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Solution Overview
Problem
Existing pressure vessel manufacturing techniques fail to differentiate between protective members with and without heat-shielding functions accurately, 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 interference with the fusible plug valve's function.
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 reliability and safety of the pressure vessel are improved, but the complexity of correctly identifying and attaching the appropriate protective member increases
Solution Approach 1:
The patent applies visual differentiation (analogous to color changes) by providing at least one of the first or second protective members with a mark or symbol that indicates its functional type. This allows operators to quickly identify whether a protective member has heat-shielding function or not, eliminating confusion during assembly and ensuring correct attachment to the appropriate panel. The mark serves as a visual cue that resolves the identification complexity without adding functional complexity to the protective members themselves.
2Reliability
If the protective member with heat-shielding function is incorrectly attached to the panel with fusible plug valve, then the fusible plug valve function is hindered and safety is compromised, but preventing this requires additional identification features
Solution Approach 1:
The patent uses marks or symbols on protective members to visually indicate their heat-shielding functionality. This allows operators to quickly identify and correctly attach the non heat-shielding protective member to the panel containing the fusible plug valve, preventing interference with the valve's emergency discharge function. The marking system ensures that the heat-shielding protective member is not mistakenly attached to the valve panel.
Solution Approach 2:
The protective members are designed with self-identifying marks that enable operators to correctly identify and attach them without requiring external guidance, complex procedures, or additional verification systems. The marks provide immediate visual information about the protective member's functional characteristics, allowing for correct attachment through simple visual inspection and matching to the appropriate panel.
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, reducing the risk of incorrect placement and maintaining the integrity of both impact-resisting and heat-shielding functions, thereby enhancing the reliability and safety of the pressure vessel.
Implementation Method 1
When exposed to high temperatures, the fusible plug valve partially fuses, opens the valve, and communicates the inside and outside of the pressure vessel
Implementation Method 2
when the protective member is exposed to high temperatures, the foamable polyurethane including expandable graphite forms foam and rapidly expands
Implementation Method 3
the foamable polyurethane including expandable graphite forms foam and rapidly expands. As a result, the heat-shielding effect is exhibited
Implementation Method 4
a protective member configured of a single layer of foamable polyurethane is disposed in the panel that is provided with the valve. The protective member has a function of relaxing external impact
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.