安全、健康和环境

针对当前加氢站探测器相关研究集中于探测器本体采集性能优化，而未量化探测器覆盖率的问题，采用计算流体动力学分析加氢站氢气泄漏扩散行为，并结合场景分析法、空间分析法，对某综合加氢站火灾和气体探测系统开展探测器布局研究，综合评估现有火灾和气体探测系统中探测器覆盖率。结果表明：站场内仍有部分泄漏点、目标区域不能被火灾和气体探测系统有效探测，其中，6个泄漏点的可燃气体探测器覆盖率分别为66.7%、50.0%、16.7%、83.3%、66.7%、66.7%,仅有1个满足要求，可增设超声探测器作为可燃气体探测器的有效补充，对全站进行覆盖；4个目标区域的火焰探测器覆盖率分别为18.1%、2.4%、0、66.9%,均未满足要求，通过将现有火焰探测器进行角度、位置调整并增设火焰探测器，可将火焰探测器覆盖率全部提升至80%以上，从而有效避免火灾事故进一步扩大。

Regarding the current research on hydrogen refueling station detectors, most of it focuses on optimizing the collection performance of the detector itself, without quantifying the detection coverage. Using computational fluid dynamics to analyze the hydrogen leakage and diffusion behavior of a hydrogen refueling station, combined with scenario analysis method and geographic analysis method, a detector layout study was conducted on the fire and gas system of a comprehensive hydrogen refueling station to comprehensively evaluate the detector coverage of existing fire and gas system. The results showed that there were still some leakage points and target areas within the hydrogen refueling station that cannot be effectively detected by fire and gas system. The coverage rates of gas detectors at 6 leakage points were 66.7%、50.0%、16.7%、83.3%、66.7%、66.7%, respectively, and only one met the requirements. Ultrasonic detectors can be added as an effective supplement to gas detectors to cover the entire station. The coverage rates of flame detectors in the 4 target areas were 18.1%、2.4%、0、66.9%, respectively, which did not meet the requirements. By adjusting the angle and position of the existing flame detectors and adding flame detectors, the coverage rate of flame detectors can be increased to over 80%, effectively avoiding further expansion of fire accidents.