Hydrogen Refueling Station Evaluation Device Purging
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Solution Overview
Problem
Hydrogen refueling stations face issues with hydrogen embrittlement in evaluation devices, leading to durability deterioration and potential safety hazards due to residual hydrogen, which can cause errors in testing and maintenance.
Innovation Solution
A hydrogen refueling station evaluation device with a socket, hydrogen tank, discharge pipeline, tank protection valve, gas supplier, and controller that uses inert gas to purge hydrogen in two modes, ensuring effective removal of residual hydrogen to prevent embrittlement and ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the evaluation device is used to test hydrogen refueling stations, then the testing function is achieved, but hydrogen remains in the device causing embrittlement and durability deterioration
Solution Approach 1:
The patent extracts and removes residual hydrogen from the evaluation device through a discharge pipeline and discharge valve system. The controller automatically opens the discharge valve to purge hydrogen from the socket and pipeline to atmospheric pressure, preventing hydrogen embrittlement while maintaining the device's testing capability.
Solution Approach 2:
The patent performs preliminary purging action automatically after each testing operation. The controller is configured to automatically execute the discharge sequence, opening the discharge valve and venting residual hydrogen before it can cause embrittlement, thus preventing damage before it occurs.
2Device complexity
If hydrogen remains in the evaluation device, then the device structure is simple, but errors in hydrogen purity measurement and safety accidents occur
Solution Approach 1:
The patent employs feedback control through pressure sensors and flow sensors that monitor the discharge process in real-time. The controller receives sensor signals and automatically adjusts the discharge valve operation to ensure complete purging of residual hydrogen, guaranteeing measurement accuracy without requiring complex manual intervention.
Solution Approach 2:
The evaluation device performs self-purging automatically through the controller that autonomously operates the discharge valve based on pressure and flow sensor feedback. This self-service mechanism eliminates residual hydrogen that would otherwise cause measurement errors without adding significant structural complexity.
3Loss of substance
If the discharge valve is used to vent hydrogen, then hydrogen can be removed from the device, but the discharge pipeline requires pressure control and monitoring
Solution Approach 1:
The patent uses pneumatic principles with pressure sensors and flow sensors to monitor and control the discharge process. The controller regulates the discharge valve based on pressure differential signals, automatically managing hydrogen venting through pneumatic feedback without requiring complex mechanical pressure control systems.
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 prevents durability deterioration and reduces the risk of errors in test results by thoroughly purging hydrogen from the evaluation device, enhancing operational safety.
Implementation Method 1
regulate and maintain a pressure of the inert gas supplied through the socket at a predetermined first reference pressure until a pressure of the discharge pipeline becomes the first reference pressure or less
Data Source
AI summary
A hydrogen refueling station evaluation device includes a socket that is supplied with hydrogen, a hydrogen tank that stores the hydrogen supplied through the socket, and a discharge pipeline that discharges hydrogen from the hydrogen tank to the atmosphere. A discharge valve adjusts open and closed states of the discharge pipeline. A tank protection valve achieves a state in which the socket and the hydrogen tank are connected to each other, a state in which the socket and the discharge pipeline are connected to each other and the hydrogen tank is closed, and a state in which all of the socket, the hydrogen tank, and the discharge pipe are connected to one another. A gas supplier supplies an inert gas to the socket and a controller operates the tank protection valve, the discharge valve, and the gas supplier.