基于离子电流的阻火器性能测试火焰传感器研究

Study on the flame sensor for flame arrester performance test based on ion current

在阻火器性能测试中,通常会在管道上安装多组火焰传感器监测火焰的到达时刻,并以此计算得出火焰在管道中的传播速度。由于常用的光学传感器存在易误报、易积碳、稳定性差等问题,为保证火焰速度求解的准确性,设计研究了一种基于离子电流的火焰传感器。通过试验对比,确定了当传感器的测量电极材料为铬锆铜、电极间距2 mm、电极长度25 mm、激励电压为36 V时,传感器可以可靠地计算得出阻火器性能测试时的平均火焰传播速度。

In the performance test experiment of flame arrester,several groups of flame sensors are installed on the pipe to monitor the arrival time of the flame,and then calculate the propagation speed of the flame in the pipe.Due to the common optical sensors are prone to false positives,easy carbon deposition,poor stability and other problems,in order to ensure the accuracy of flame speed solution,a flame sensor based on ion current is designed.The parameters of the sensor are determined through experimental comparison,that is,when the measuring electrode material is chromium zirconium copper,the electrode spacing is 2 mm,the electrode length is 25 mm,and the excitation voltage is 36 V,the sensor can reliably calculate the average flame propagation speed during the performance test of the flame arrester.