为探索加氢站运行时氢气泄漏和扩散的现象和规律,在真实加氢站的基础上建立试验装置,该装置可进行全尺寸高压氢气泄漏试验。利用车载高压储氢罐作为高压氢气气源,通过管道中不同阀门的组合和仪表控制系统来控制试验系统,为试验段提供氢气。通过设定不同的泄漏压强,可测量得到氢气泄漏后的浓度分布。根据试验结果,振动传感器在监测氢气泄漏时较有效,具有可行性。利用浓度传感器测量易受到风向等环境的影响,可考虑使用声音或加速度传感器。泄漏压强低于35 MPa时未探测到氢气泄漏自燃现象。
Abstract
In order to explore the phenomena and characteristics of hydrogen leakage and diffusion during the operation of hydrogen refuelling stations, a full-scale high-pressure hydrogen leakage test facility was established based on a real hydrogen refuelling station. Using a vehicle mounted high-pressure hydrogen storage tank as a high-pressure hydrogen gas source, the testing system was controlled through a combination of different valves in the pipeline and an instrument control system to provide hydrogen for the test section. The concentration distribution after hydrogen leakage was analyzed by changing different leakage pressures. According to the experimental results, the vibration sensors are effective and feasible in monitoring hydrogen leakage. The use of hydrogen concentration sensors for measurement is easily affected by environmental factors such as wind direction, and the use of sound or acceleration sensors can be considered. No spontaneous combustion was detected under the condition of 35 MPa hydrogen leakage.
关键词
氢气 /
泄漏 /
试验装置 /
加氢站 /
全尺寸 /
高压
Key words
hydrogen /
leakage /
test facilities /
hydrogen refuelling station /
full scale /
high-pressure
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基金
国家重点研发计划（2021YFB4000901）
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