温压炸药爆炸过程的瞬态温度

摘要

A multi-wavelength temperature-measuring system based on the atomic emission spectroscopy was used to measure the transient high temperature during the explosion process of thermo-baric explosive (TBE). The time resolution of the measurement system could achieve μs scale. By measuring the explosion temperature of TBEs, the curves of temperature vs time were obtained.There are two temperature peaks corresponding to the oxygen-free reaction and oxygen reaction phases of TBE explosion process,respectively. Results show that the relative error of measured temperature is less than 2.6％, showing a good repeatability.Compared with the double line of atomic emission spectroscopy, the multi-wavelength temperature-measuring system can minimize the errors resulting from the selection of spectral lines.%为了更好地测量炸药爆炸过程瞬时高温,在原子发射光谱理论的基础上,研制了一套瞬态多谱线测温系统,系统的时间分辨率可达微秒级.通过对三种配方温压炸药爆炸过程的实时测量,获得了其温度随时间分布的曲线.曲线的两个峰值如实反映了温压炸药爆炸过程中最初无氧燃烧反应和后续有氧燃烧反应.多组实验结果表明,多谱线测试系统相对偏差低于2.6%,重复性较好,可以部分消除双谱线法中因所选谱线组不同而引起的计算结果的不确定性.