基于光纤传感技术的易燃易爆气体泄漏监测研究

针对目前易燃易爆气体泄漏监测手段的不足,提出了一种使用光纤光栅传感技术进行实时监测的方法。根据实际工况搭建了管道输气系统,使用空气作为传输介质模拟了易燃易爆气体发生泄漏的过程。通过对监测点管道的振动加速度进行采集,利用降噪和傅里叶、变换的信号处理手段,对振动波形进行分析。结果表明:在管道发生泄漏时,管道振动的振动加速度会发生一定程度的减小,振动主频会略微变大。通过光纤光栅传感技术,对振动特征参数进行分析和计算,可实现管道泄漏点准确定位。

Research on Leakage Monitoring of Flammable and Explosive Gas based on Optical Fiber Sensing Technology

Aiming at the deficiency of the current monitoring means of flammable and explosive gas leakage,a method of real-time monitoring using fiber Bragg grating sensing technology is proposed. According to the actual working conditions,the pipeline gas transmission system is built,and the use of air as the transmission medium simu-lates the process of flammable and explosive gas leakage.By collecting the vibration acceleration of the monitoring point pipeline,using the signal processing method of denoising and Fourier transform,the vibration waveform is ana-lyzed.The results show that when pipeline leakage occurs,the vibration acceleration of pipeline vibration will de-crease to a certain extent,the frequency of vibration will be slightly larger.Through the fiber Bragg grating sensing technology,the vibration characteristic parameters are analyzed and calculated,and the pipeline leakage point positio-ning can be realized well.