Tank Neck Pressure Base Layout for High-Pressure Valve Protection
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Solution Overview
Problem
Existing tank devices for fuel cell systems face challenges in maintaining safety and preventing rapid aging of safety valves due to high system pressures, which complicates their structural design and increases the risk of failure.
Innovation Solution
The tank device features a tank container with a tank pressure base that separates the tank interior from the tank neck, utilizing a double tank pressure base design achieved through a stretching and compression process or by introducing mandrels, and a valve device integrated in the tank neck, reducing force engagement surfaces and optimizing pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If safety valves are directly exposed to high system pressures in tank containers, then safety function is ensured, but rapid aging and failure of safety valves occurs requiring complicated structural measures
Solution Approach 1:
The tank container is divided into two separate spaces: a tank interior for storing the gaseous medium and a tank neck space for housing safety components. The tank pressure base creates this segmentation, isolating safety valves from direct exposure to high-pressure gas while maintaining their safety function through pressure sensing capabilities.
Solution Approach 2:
The tank pressure base acts as an intermediary element between the high-pressure tank interior and the safety valve housing tank neck space. It transmits pressure information to safety valves without exposing them directly to the harsh high-pressure environment, thereby extending their service life while maintaining reliability.
2Duration of action of stationary object
If complicated structural measures are implemented to protect safety valves from high forces, then rapid aging is prevented, but device complexity and costs increase
Solution Approach 1:
By segmenting the tank container into separate functional zones (tank interior and tank neck space), the patent eliminates the need for complex protective structures around safety valves. The simple geometric separation achieves protection without adding structural complexity or cost.
3Reliability
If multiple tank containers with safety valves are used, then safety requirements are met, but production costs increase
Solution Approach 1:
The patent combines multiple safety valve functions into a single integrated tank neck space, rather than requiring separate safety valve assemblies for each tank container. This merging approach maintains safety compliance while reducing the total number of components and lowering production costs.
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 provides a cost-effective and reliable solution that minimizes the risk of valve failure, ensures safe operation under high pressures, and simplifies the production process while maintaining safety standards.
Implementation Method 1
The loadings on the components of the tank device, in particular the valve device, can thus be reduced by the force engagement surfaces on the valve device being kept as small as possible. If the force engagement surface is reduced to the components used in the tank neck, this also leads to a general reduction in the force loading on the tank container.
Implementation Method 2
internally deforming the tank neck by means of a stretching and compression process to produce a double tank pressure base, wherein at least two mandrels are introduced simultaneously or alternately into the tank neck and the tank neck is thus shaped inward
Implementation Method 3
heating both ends of the at least one tank container up to the certain melting point
Implementation Method 4
heating both ends of the at least one tank container up to the certain melting point
Data Source
AI summary
The invention relates to a tank device (1) for storing a gaseous medium, in particular hydrogen, comprising at least one tank reservoir (3), wherein said at least one tank reservoir (3) comprises a tank housing (30) having a tank neck (2). Furthermore, a tank pressure bottom (8) is arranged in the tank neck (2), which tank pressure bottom (8) separates a tank neck space (7) and a tank interior (6) from one another, and wherein said tank neck (2) has an outer thread (10) as an abutment on an outer side (20).