Hydrogen Pressure-Reducing Valve Structure for Lightweight Torch Sealing
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Solution Overview
Problem
Existing handheld torches using propane face challenges such as low temperature resistance, poor wind and rain resistance, and require high-pressure hydrogen storage which poses challenges for reliable sealing and component size/weight constraints in a hydrogen energy handheld torch.
Innovation Solution
A lightweight depressurization hydrogen supply device that connects a gas cylinder to a combustor, featuring a cylinder opening valve, pressure reducing valve, switch assembly, and gas cylinder cap, designed to manage high-pressure hydrogen and provide a stable flow with low opening and closing torque, while ensuring reliable sealing and compact size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If storage pressure in gas cylinder is increased to ensure combustion time, then combustion duration is improved, but sealing reliability deteriorates due to higher pressure requirements
Solution Approach 1:
The pressure reduction process is segmented into multiple stages through a multi-hole pressure reduction structure. Instead of a single pressure reduction step, the patent uses multiple holes of different diameters to progressively reduce pressure from 70MPa to operational levels, distributing the stress and improving sealing reliability at each stage while maintaining extended combustion duration.
Solution Approach 2:
The patent changes the pressure parameter progressively through multiple reduction stages rather than a single step. By using pressure reduction holes with different diameters, the system transforms the pressure from 70MPa through intermediate levels to final operational pressure, allowing sealing components to handle manageable pressure differences at each interface while maintaining high storage pressure for extended combustion.
2Weight of moving object
If pressure reduction ratio is increased to enable handheld torch use, then portability is improved, but pressure stabilization precision deteriorates
Solution Approach 1:
The pressure reduction function is segmented into multiple holes with different diameters arranged in specific patterns. This segmentation allows progressive pressure reduction while maintaining better control over the final pressure level, improving stabilization precision despite the large overall pressure ratio required for handheld portability.
Solution Approach 2:
The patent uses multiple pressure reduction holes instead of a single large reduction opening. By providing multiple partial reduction paths, the system achieves better pressure control and stabilization than a single excessive pressure reduction step would allow, while still enabling the compact handheld design.
3Volume of moving object
If component dimensions are reduced for handheld torch, then portability is improved, but opening and closing torque increases
Solution Approach 1:
The patent resolves the torque issue by changing the operational dimension from rotational valve opening to linear push-button actuation. The switch assembly converts the opening/closing action into a linear motion that actuates the valve, eliminating the high rotational torque problem while maintaining compact dimensions suitable for handheld use.
Solution Approach 2:
The switch assembly acts as an intermediary mechanism between the user input and the valve actuation. It converts the user's linear pushing motion into the appropriate mechanical action to open or close the valve, avoiding the need for direct high-torque rotational operation and enabling compact design.
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 device effectively depressurizes hydrogen at a large ratio, stabilizes pressure, ensures high reliable sealing, and achieves low opening and closing torque, making it suitable for hydrogen energy handheld torches with advantages of wide temperature range, miniaturization, and lightweight design.
Implementation Method 1
The pressure reducing valve is configured to perform depressurization of high-pressure hydrogen
Implementation Method 2
The ejector pin is provided with a hole in the center, and the high-pressure hydrogen enters from the cylinder opening valve through the ejector pin
Data Source
AI summary
A lightweight depressurization hydrogen supply device suitable for a hydrogen energy handheld torch is provided. The device is configured to connect a gas cylinder to a combustor in the torch and includes a cylinder opening valve, a pressure reducing valve, a switch assembly, a switch actuating component, and a gas cylinder cap. The pressure reducing valve is configured to perform depressurization of high pressure hydrogen, and is provided with three butting ports. A lower butting port is connected to the gas cylinder cap, an upper butting port is connected to the combustor, a side butting port is provided with the switch assembly, and the switch actuating component and the cylinder opening valve are installed in the gas cylinder cap. The switch assembly is configured to control the switch actuating component to open or close the cylinder opening valve. The cylinder opening valve is connected to a cylinder opening of the gas cylinder and configured to open or close the gas cylinder.