摘要
可燃气体的燃烧、爆炸是工业生产中常见的灾害性事故,危害极大。通过爆轰管实验装置,采用疏密分布的压力传感器测量氢氧混合气体的爆轰特性,并依据压力和波速在燃烧转爆轰瞬间发生突跃,判断混合气体爆炸的临界条件。实验结果表明,爆炸压力随氢气初始浓度呈∩形变化,50%氢气体积分数为爆炸最佳浓度值;在常温常压下,氢氧混合物爆炸的临界氢气体积分数是15%和90%;化学计量比的氢氧混合气体发生爆炸的临界初始压力为0.01 MPa;氮-氢-氧三元混合气体爆炸的临界氮气体积分数为60%。
The combustion and explosion of combustible gas is one kind of commonly seen accidents with severe hazards in industry. The detonation experiments are conducted to measure the detonation characteristics of hydrogen/oxygen gas mixture and judge the critical explosion conditions of the mixture based on the pressures and velocities of detonation wave. The results show that the pressures of detonation wave vary with the concentration of hydrogen s a ＂∩＂ and 50% of hydrogen concentration is the optimal concentration value of explosion; under normal temperature and pressure, the critical concentrations of hydwgen are 15% and 90% for the mixture; the critical initial pressure of the mixture at stoichiometric ratio should be 0.01 MPa; and the critical explosion concentrations of nitrogen for the nitrogen/hydrogen/oxygen mixture is 60%.
出处
《工业安全与环保》
2008年第10期26-28,共3页
Industrial Safety and Environmental Protection
关键词
气相爆轰
氢氧混合气体
燃烧转爆轰
临界条件
gaseous detonation hydrogen/oxygen gas mixture deflagration to detonation transition critical explosion condition
