车载激光甲烷遥测系统的设计

Design of vehicle-mounted laser methane remote system

摘要:

为了解决传统燃气巡检设备检测效率低、检测距离近的问题,文章结合可调谐激光吸收光谱技术和地物的后向散射特性, 设计了一套车载激光甲烷遥测系统,并进行了模拟测试。测试表明,该系统对甲烷气体的最低检测限为5 umol/mol,可探测距离150米,体积分数为0.1%的甲烷气体泄漏,并能在车速为50km/h行驶时,检测到燃气泄漏点,检测距离远、响应速度快、灵敏度高、抗干扰能力强,很好的满足实际探测需要。通过燃气公司实际应用表明,该系统极大地提高了燃气巡检效率,减少燃气巡检周期,非常适合长输管线的快速巡检,实用性强。

Abstract:

In order to solve the problem of low detection efficiency and short detection distance of traditional gas patrol equipment, the network combines the tunable diode laser absorption spectroscopy technology and the backscatter of the objects,a set of vehicle-mounted laser methane remote system is designed, and has carried on the simulation test. The test shows that the system is minimum detection limit for methane is 5 umol/mol.m, and it can detect concentration of 0.1% methane leak at a distance of 150 meters, and can detect the gas leak point at a speed of 50km/h. Its distance is long, response speed is fast, the sensitivity is high, anti-interference ability is strong, which well meets the actual detection needs. Through the gas company actual application shows that the system greatly improve the efficiency of the gas inspection, reduce gas inspection cycle, very suitable for the long distance pipeline rapid inspection, and the practicability is well.