爆炸起因 乙炔气瓶的爆炸是由于温度和压力急剧上升,乙炔发生分解而引起的。 下列原因可以引起乙炔分解: 1.焊枪回火。 2.外部加热(乙炔瓶附近有燃烧的物质,钢瓶上挂有未灭火的焊枪或切制枪等工具)。 3.钢瓶阀门或减压器附近的乙炔着火。 　预防措施 1.减压器的联接要严密。 2. Causes of Explosion The explosion of acetylene cylinders is caused by a sharp rise in temperature and pressure, and the decomposition of acetylene. The following reasons can cause acetylene decomposition: 1. Torch tempering. 2. External heating (acetylene bottle near the burning of substances, unlabeled firearms hanging on the cylinder or cutting gun and other tools). 3. Cylinder valve or pressure regulator near the acetylene on fire. Preventive measures 1. Pressure reducer connection should be tight. 2.