Hydrogen Pressure-Reducing Valve With Automatic Cut-Off and Relief
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Solution Overview
Problem
Current hydrogen pressure-reducing valves lack automatic pressure-relief and cut-off functions, which are essential for safe operation in emergency situations, such as car accidents, where immediate gas supply cessation is required.
Innovation Solution
A hydrogen pressure-reducing valve design incorporating a main pressure-reducing valve and a cut-off valve, featuring a valve body, adjustment sealing cover, top rod, valve core, and inlet sealing cover, with a pressure-relief channel and electromagnetic cut-off valve, allowing for automatic pressure reduction and cut-off when danger is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-function pressure-reducing valve is used to reduce hydrogen pressure, then the pressure reduction function is achieved, but the valve cannot automatically cut off gas supply in emergency situations
Solution Approach 1:
The patent combines a pressure-reducing valve and a cut-off valve into a single integrated hydrogen bottle valve assembly. The pressure-reducing valve reduces high-pressure hydrogen to working pressure, while the cut-off valve automatically seals the gas supply channel in emergency situations. This merging allows the system to achieve both pressure reduction and emergency cut-off functions without requiring separate valve installations, thereby improving safety while maintaining reasonable structural complexity.
Solution Approach 2:
The integrated bottle valve is designed to perform multiple functions: pressure reduction, flow regulation, and automatic emergency cut-off. By making the valve universal, the system can handle both normal operation (pressure reduction) and emergency situations (automatic cut-off) with a single device, eliminating the need for additional specialized components.
2Reliability
If the gas supply channel is not automatically cut off in emergencies, then the valve structure remains simple, but safety is compromised when immediate gas supply cessation is required
Solution Approach 1:
The cut-off valve is designed with automatic activation capability that detects emergency conditions (such as collisions or abnormal pressure changes) and autonomously seals the gas supply channel without requiring manual intervention. This self-service mechanism ensures immediate gas supply cessation in emergencies, significantly improving safety while eliminating the need for human response time.
Solution Approach 2:
The valve assembly includes preliminary safety mechanisms that are pre-configured to detect emergency conditions and trigger automatic cut-off before the emergency can escalate. The cut-off valve is positioned and configured in advance to seal the gas supply channel immediately upon detecting predefined emergency parameters, preventing potential hazards from developing.
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
Enables stable pressure and flow management while automatically cutting off the gas supply in emergencies and returning to normal operation, ensuring safety and efficient hydrogen utilization.
Implementation Method 1
a first spring sleeved on the rod part of the top rod is disposed between the adjustment sealing cover and the first disc-shaped end part, a second spring sleeved external to the valve core is disposed between the inlet sealing cover and the first disc-shaped end part, and the first spring and the second spring remain in a compressed state
Implementation Method 2
The pressure-reducing principle of the hydrogen pressure-reducing valve is that the throttling effect occurs when hydrogen passes through a narrow section. The temperature of the hydrogen increases and the pressure decreases.
Implementation Method 3
a cut-off valve, wherein the cut-off valve is an electromagnetic cut-off valve
Data Source
AI summary
A hydrogen pressure-reducing valve having automatic pressure-relief and cut-off functions and a method therefor. The hydrogen pressure-reducing valve includes a main pressure-reducing valve and a cut-off valve. The cut-off valve includes a gas flow inlet, a valve rod whose disposed with a cut-off valve element, and a gas flow outlet. The gas flow inlet is used to connect with an external gas inlet pipe. The gas flow outlet communicates with the adjustment channel. A target gas enters the adjustment channel through the gas flow outlet and act on a second disc-shaped end part. The valve rod is disposed with a pressure-relief channel whose includes a control end and an exhaust end. The exhaust end communicates with the outside world. The control end communicated with a valve body inner cavity of the cut-off valve when the cut-off valve element is closed, and closed when the cut-off valve element is opened.