GB/T 45161-2024 in English

1. Background and significance of standard formulation

As an important carrier of clean energy, the safety of storage and transportation of liquid hydrogen is of vital importance. The formulation of GB/T 45161-2024 "Technical Specifications for Safety Valves for Liquid Hydrogen Containers" aims to ensure that liquid hydrogen containers can operate safely under extreme temperature and pressure conditions. This standard fills the gap in safety valve technology in the domestic liquid hydrogen field and provides important technical support for the healthy development of the hydrogen energy industry.

2. Comparative analysis of standard frameworks

3. Interpretation of core technical requirements

Low temperature adaptability: The safety valve needs to work normally in the range of liquid hydrogen temperature (-254°C) to 65°C, and the material selection must meet the mechanical properties and hydrogen corrosion resistance in extremely cold environments.

Anti-static design: The design requires that the maximum resistance between the shell, opening and closing parts and the valve stem does not exceed 5Ω to prevent safety hazards caused by static electricity accumulation.

4. Implementation suggestions and precautions

• Strictly control the material procurement process to ensure compliance with the austenitic stainless steel standard requirements.
• Strengthen low-temperature impact tests and anti-static structure inspections during the production process.
• The user should establish a regular inspection system to ensure the long-term and stable operation of the safety valve.