Pressure Vessel Mounting Protrusion for Rapid Fusible Plug Activation
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Solution Overview
Problem
The existing pressure vessel mounting structure inefficiencies in heat transmission to the fusible plug valve when the vehicle lower part reaches high temperatures, as heat is transmitted through the cover member and tubular member, leading to delayed discharge of high-pressure gas.
Innovation Solution
A pressure vessel mounting structure with a container body, pipe, fusible plug valve, and cover member, where the cover member includes a protrusion near the fusible plug valve, reducing the distance for heat transmission and enhancing efficiency, and optionally featuring elongated protrusions for flame guidance and reinforcement beads for improved rigidity and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If heat is transmitted to the fusible plug valve via the cover member and tubular member, then the structure is simple and easy to manufacture, but the heat transmission efficiency is low and the discharge time is delayed
Solution Approach 1:
The patent introduces a vertical dimension by forming a protrusion that extends upward from the bottom face portion of the cover member. This protrusion creates a direct thermal pathway from the bottom surface (exposed to external heat) through the protrusion to the fusible plug valve, adding a new heat transmission route that bypasses the slower conduction path through the tubular member.
Solution Approach 2:
The protrusion acts as a thermal intermediary or conductor between the external heat source and the fusible plug valve. By providing this dedicated thermal bridge, heat can be efficiently transmitted from the bottom face portion through the protrusion to melt the fusible plug valve, without relying solely on heat conduction through the cover member and tubular member.
2Object-affected harmful factors
If the cover member covers the container body and pipe from below, then protection against pebbles and improved rigidity are achieved, but heat transmission to the fusible plug valve is inefficient
Solution Approach 1:
The patent applies local quality by creating a protrusion with specific thermal properties in a localized area near the fusible plug valve. This protrusion has direct thermal contact with the valve and serves as a dedicated heat transmission pathway, while the rest of the cover member maintains its protective function. Different regions of the cover member thus have different functions: the protrusion region for heat transmission and the main body for protection.
3Loss of time
If the protrusion is formed by protruding the bottom face portion upward, then the distance for heat transmission is shortened and heat transmission efficiency is improved, but the structural complexity increases
Solution Approach 1:
The cover member is segmented into functional zones: the main bottom face portion for protection and the protrusion for heat transmission. This segmentation allows each part to perform its specific function optimally while keeping the overall structure relatively simple. The protrusion is an added feature rather than a complete redesign of the cover member.
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 structure significantly improves heat transmission efficiency to the fusible plug valve, allowing for quicker discharge of high-pressure gas and enhanced protection against pebbles and improved rigidity, while guiding flames effectively under the vehicle.
Implementation Method 1
the fusible plug valve is configured to close the discharge gas passage and to, when the fusible plug valve is at least partially melted, open the discharge gas passage such that the high-pressure gas stored in the container body is discharged
Implementation Method 2
heat transmission to the fusible plug valve is performed quickly via the communicating opening of the protrusion
Data Source
AI summary
A pressure vessel mounting structure includes: a manifold including a discharge gas passage branching from a general passage via which a container body communicates with a valve; a fusible plug valve configured to close the discharge gas passage and to, when the fusible plug valve is melted, open the discharge gas passage such that the high-pressure gas is discharged; a case including a bottom face portion covering the container body and the manifold from below in the vehicle up-down direction, the case including a bead placed near the fusible plug valve, the bead being formed by protruding a part of the bottom face portion upward in the vehicle up-down direction; and a communicating opening via which a space under a floor of a vehicle communicates with the fusible plug valve, the communicating opening being formed in a part of the bead, the part facing the fusible plug valve.