火炬火焰监测技术实验测试及对比研究

摘要

基于Labview软件,开展热电偶探测、紫外火焰探测、离子火焰监测系统对火炬长明灯火焰响应的实验研究和数据分析.通过分析比较不同火焰监测系统的响应信号,得出以下结论:热电偶监测技术响应时间较长；紫外监测技术响应时间为2-4s,但其输出电压值较小,且在实际运行过程中无法区分高空点火器火焰及长明灯火焰；火焰离子监测技术响应时间为2-6s,输出信号强,容易实现火焰燃烧状态的快速判断.%The response signals of thermocouple monitoring system,ultraviolet monitoring system and flame ionization monitoring system were tested and analyzed using Data Acquisition(DAQ) card and Labview software.Results showed that the response time of thermocouple monitoring system is 1.5-3min,and the response time of ultraviolet monitoring system is 2-4s,but its output voltage is smaller,and could not distinguish the pilot flame from the high level igniter flame.The response time of flame ionization monitoring system is 2-6s and its output signal is strong enough to detect the flame in a short time.