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危险气体泄漏引发的事故及灾难对人身安全和社会稳定造成巨大威胁,及时有效地检测到气体泄露、定位泄漏源以及评估气体扩散趋势等成为研究人员关注的热点。与目前各种单点气体探测器固定位置并通过气体扩散进行泄漏气体探测不同,基于红外焦平面探测器的红外成像气体泄漏检测技术对可能的泄露点进行成像检测。由于这两种探测器本身的灵敏度差异较大,且工作原理也有所不同,所以如何评价两者的探测效率成为人们关心的问题。因此,基于计算流体力学软件FLUENT对两种探测器在室内空间环境的检测灵敏度进行了模拟分析,比较了两者在实际应用中的优缺点,指出红外焦平面探测器在响应速度和实际检测灵敏度等方面的独特优势,对红外成像气体泄漏检测技术的进一步发展具有推动作用和借鉴意义。
The accidents and disasters caused by dangerous gas leakage pose great threats to personal safety and social stability, timely and effective detection of gas leaks, location of leakage sources and assessment of gas diffusion trends have become the focus of researchers’ attention. Different from the existing single-point gas detectors and gas leakage detection by gas diffusion, infrared imaging gas leakage detection technology based on infrared focal plane detector is used to detect possible leak points. Since the sensitivity of these two detectors is quite different and the working principle is different, how to evaluate the detection efficiency of the two detectors has become a concern of people. Therefore, the computational fluid dynamics software FLUENT is used to simulate the detection sensitivity of the two detectors in the indoor space environment. The advantages and disadvantages of the two detectors in practical applications are compared. It is pointed out that the response speed and the actual detection sensitivity of the infrared focal plane detector And other unique advantages, infrared imaging gas leak detection technology to further promote the role and reference.