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基于小型化、便携式的结构特点,设计了一种非贮压手持式灭火弹,利用热气溶胶来推动超细干粉喷射。为了实现较好的气体推动力,同时抑制热气溶胶所带来的高温,对产气剂进行了装药设计,进行了药剂优化的性能试验研究,通过自设温度测试平台,对喷口及手柄温度变化进行了试验研究。结果表明,优化设计的产气剂产气性能较好,比容较大,为340mL/g;燃烧热值较低,为2 920J/g;真空安定性较好,为0.42mL/g;且灭火弹安全性较好,喷口最高温度不到60℃,手柄最高温度不到40℃。
Based on the characteristics of miniaturization and portable structure, a non-pressure-storing hand-held fire-extinguishing bomb was designed and the hot aerosol was used to promote the ultra-fine dry powder injection. In order to achieve a better gas driving force and suppress the high temperature caused by hot aerosol, the gas-generating agent was designed and tested. The performance of the agent was optimized and tested. The temperature of the nozzle and the handle Changes were tested. The results show that the optimized gas-generating agent has good gas-generating performance with a large specific volume of 340 mL / g, a low combustion calorific value of 2 920 J / g, and a good vacuum stability of 0.42 mL / g; and Extinguishing fire safety is better, the maximum temperature of the spout is less than 60 ℃, the maximum temperature of the handle is less than 40 ℃.