金属化凝胶甲基肼火灾热辐射特性研究

Study on Thermal Radiation Characteristics of Metallized Gel Methylhydrazine

为研究金属化凝胶甲基肼在存储、生产、运输和使用过程中因意外燃爆而产生的火灾热辐射特性,采用高速摄像机、红外热成像仪和热辐射测试系统,记录火烧刺激条件下金属化凝胶甲基肼储罐的燃爆过程、表面火球最高温度以及火球热辐射的变化规律。结果表明:火灾刺激条件下金属化凝胶甲基肼仅发生燃烧反应,基于热通量判断准则得出18kg金属化凝胶甲基肼遭遇火灾时的无热辐射损害安全距离约为30 m。

To study the thermal radiation characteristics caused by accidental deflagration of metallized gel methylhydrazine(MMH)during production,storage,transportation and use,the information of the deflagration processes under external flame stimulation were obtained by a high-speed camera.Additionally,in the same situation,the highest temperature of the surface fireball and the principle of the thermal radiation were also studied by a infrared thermal imager and thermal radiation testing system.Results show that metallized gel MMH only has burning reaction.Based on criteria for judging heat flux,the safety radius of thermal radiation for metallized gel MMH(18kg)is about 30m.