Hydrogen Supply Equipment Parahydrogen Conversion
Solution Overview
Problem
Current hydrogen supply equipment experiences significant changes in hydrogen flow rate when switching from hydrogen produced at normal temperature to hydrogen obtained by vaporizing liquid hydrogen, affecting processes like quartz glass manufacturing, leading to increased defective devices due to fluctuations in flame temperature and lifting speed.
Innovation Solution
The equipment returns hydrogen at low temperature to normal temperature and passes it through a catalyst chamber to accelerate the conversion from parahydrogen to orthohydrogen, maintaining a consistent hydrogen flow rate by adjusting the hydrogen molecule isomers' ratio, ensuring the same specific heat and stable supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If hydrogen obtained by vaporizing liquid hydrogen is supplied to equipment, then hydrogen supply continuity is improved, but hydrogen flow rate stability deteriorates
Solution Approach 1:
The patent changes the physical state parameter of hydrogen from liquid to gas through controlled vaporization, and adjusts the isomer composition ratio (orthohydrogen to parahydrogen) to match normal hydrogen specifications. This resolves the contradiction by maintaining supply continuity while stabilizing flow rate through parameter control.
Solution Approach 2:
The patent implements flow rate monitoring and feedback control to detect and correct deviations caused by liquid hydrogen vaporization. By continuously measuring actual flow rate and adjusting supply parameters, the system maintains flow rate stability while utilizing liquid hydrogen for continuous supply.
2Adaptability or versatility
If liquid hydrogen is vaporized and supplied, then backup hydrogen availability is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent controls the isomer composition ratio of vaporized hydrogen to match normal hydrogen specifications. By adjusting the orthohydrogen to parahydrogen ratio, the specific heat and combustion characteristics are standardized, ensuring flame temperature stability and manufacturing precision while maintaining backup hydrogen availability.
Solution Approach 2:
The patent creates a copy of normal hydrogen's properties by controlling the isomer composition of vaporized liquid hydrogen to match the orthohydrogen to parahydrogen ratio of normal hydrogen (approximately 3:1). This copying of physical properties ensures that vaporized hydrogen behaves identically to normal hydrogen in combustion processes.
3Adaptability or versatility
If vaporized liquid hydrogen is used, then hydrogen supply flexibility is improved, but flow rate measurement accuracy deteriorates
Solution Approach 1:
The patent standardizes the isomer composition ratio of vaporized hydrogen to match normal hydrogen, which stabilizes the specific heat and thermal properties. This parameter standardization enables mass flow controllers to accurately measure and control hydrogen flow rate, resolving the measurement accuracy issue while preserving supply flexibility.
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 approach stabilizes the hydrogen flow rate, preventing changes in the actual flow rate and maintaining consistent purity, thereby reducing defective devices and ensuring stable optical characteristics in manufactured products like optical fibers.
Implementation Method 1
passing it through equipment for accelerating a conversion from parahydrogen to orthohydrogen
Implementation Method 2
heats and vaporizes the liquid hydrogen, and supplies the resulting gas
Data Source
AI summary
Provided is hydrogen supply equipment that, when switching hydrogen supplied to equipment using hydrogen from (i) hydrogen produced at a normal temperature or hydrogen stored at a normal temperature to (ii) hydrogen stored at a low temperature, supplies the equipment using hydrogen with normal hydrogen obtained by returning the hydrogen at the low temperature to a normal temperature and then passing this hydrogen through equipment for accelerating a conversion from parahydrogen to orthohydrogen.