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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。
Indoor oxygen enrichment is an effective solution to hypoxia in high altitude areas, but may pose a potential fire hazard. This risk is usually assessed by the burning rate of a light, thin homogeneous solid in an oxygen-rich environment. In order to test the burning rate of light, thin and homogeneous solid under low pressure and oxygen enrichment, this experiment developed and assembled a system including gas distribution system, ignition equipment, combustion rate calculation system and home-made combustion test by using laser fiber contact ignition and direct calculation of burning rate Frame and other nine parts of the test device, and studied the typical thin uniform homogeneous solid filter paper under different conditions of low pressure oxygen enrichment combustion rate and to achieve a fixed combustion rate of oxygen-rich concentration. The results show that the device is simple and easy to conduct, and can quantitatively study the burning rate of light and homogeneous solid under different low pressure and oxygen enrichment.