一种测试轻薄匀质固体在低压富氧下燃烧速率的装置

A Device for Measuring the Burning Rate of Light and Thin Homogeneous Solid under Low Barometric Pressure and in Enriched Oxygen

室内富氧是一种解决高海拔地区缺氧的有效办法,但可能带来潜在的火灾危险。通常用轻薄匀质固体在富氧环境下的燃烧速率来评价这种危险。为了测试轻薄匀质固体在低压富氧下的燃烧速率,本实验应用激光光纤接触点火和燃烧速率直接计算的方法,研制和组装了包括配气系统、点火设备、燃烧速率计算系统和自制燃烧试件架等九个部分的测试装置,并研究了典型的轻薄匀质固体滤纸在不同低压富氧条件下的燃烧速率和达到固定燃烧速率时的富氧浓度。结果表明,该装置简便易行,可以定量研究不同低压富氧下轻薄匀质固体的燃烧速率。

Oxygen enrichment o{ room air is an effective way to resist hypoxia at high altitude, but it may mtroauce a potential fire hazard. In common, the burning rate o[ light and thin homogeneous solid in oxygen enriched atmos phere was used to assess the fire hazard. For the purpose of measuring the burning rate of light and thin homogene ous solid in oxygen enriched atmosphere, we used the methods of laser contact ignition and direct calculation of burn ing rate, and invented a device that includes mixing gas system, ignition equipment, system of measuring the burning rate and selfmade specimen frame. By using the homemade device, we studied the burning rate of filter paper under low pressure and in oxygenenriched atmosphere and in that of the oxygen concentration of reached stationary burning rate. The results showed that this device was simple, and could obtain the burning rate of light and thin homogene ous solid quantitatively.