Hydrogen Mixing Device Abnormality Dilution Valve Circuit
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Solution Overview
Problem
Existing hydrogen gas mixing devices do not effectively treat hydrogen gas during abnormal conditions, such as power failures, which can lead to the release of high-concentration hydrogen gas.
Innovation Solution
Incorporating a dilution gas supply part and a valve circuit that connects a hydrogen gas path with a dilution gas path to dilute the hydrogen gas with a non-combustible dilution gas, such as nitrogen, when an abnormality occurs, ensuring safe release of the gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a hydrogen generation part generates high-concentration hydrogen gas, then the productivity of hydrogen gas generation is improved, but the safety risk during abnormal conditions deteriorates
Solution Approach 1:
The patent applies preliminary action by preparing a dilution gas supply part and valve circuit in advance, configured to automatically activate during abnormal conditions. The dilution gas (inert gas) is readied and the valve circuit is pre-positioned to connect the hydrogen generation part with the dilution gas supply, enabling immediate dilution response without requiring complex real-time decision-making during emergencies.
Solution Approach 2:
The patent employs inert atmosphere by introducing a dilution gas that is substantially inert (non-combustible) into the hydrogen generation part during abnormal conditions. This inert gas dilutes the high-concentration hydrogen gas, creating a less flammable atmosphere that reduces safety risks while maintaining the ability to handle the generated hydrogen efficiently.
2Object-affected harmful factors
If a valve circuit is added to dilute hydrogen gas during abnormalities, then the safety during abnormal conditions is improved, but the device complexity increases
Solution Approach 1:
The patent applies the taking out principle by extracting the safety function into a separate, dedicated dilution gas supply part and valve circuit. This modular approach isolates the safety mechanism from the main hydrogen generation system, allowing the safety function to be added without fundamentally redesigning the core hydrogen generation apparatus. The valve circuit acts as a standalone safety component that can be integrated with minimal disruption to the existing high-productivity hydrogen generation system.
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 dilutes high-concentration hydrogen gas to a safe concentration, preventing its release during abnormal conditions and ensuring the device's safety and operational efficiency.
Implementation Method 1
a valve circuit configured to, at an abnormality occurrence time, dilute the hydrogen gas with the dilution gas by connecting a first path for the hydrogen gas supplied from the hydrogen generation part and a second path for the dilution gas supplied from the dilution gas supply part
Data Source
AI summary
There is provided a hydrogen gas mixing device that includes a hydrogen generation part configured to generate a hydrogen gas; a mixing gas supply part configured to supply a mixing gas; a gas mixing part configured to mix the hydrogen gas and the mixing gas; a dilution gas supply part configured to supply a non-combustible dilution gas; and a valve circuit configured to, at an abnormality occurrence time, dilute the hydrogen gas with the dilution gas by connecting a first path for the hydrogen gas supplied from the hydrogen generation part and a second path for the dilution gas supplied from the dilution gas supply part.