航空冷却液的火灾危险性试验研究

Experimental study on fire hazard of aviation coolant

航空冷却液是飞机发动机与电子设备在工作中使用的一种冷却工质,冷却液本身属于一种可燃液体,并且常在高温情况下进行使用,在油品火灾危险性研究中,冷却液的火灾危险性通常被忽视,因此,对典型的航空冷却液的火灾危险性进行了综合研究。通过自动闪点仪对冷却液的闪点进行了测试,并对其危险性进行了分级。利用锥形量热仪对航空冷却液的燃烧特性进行了研究,得到了大量的基础火灾数据,利用JANSSENS M L的点燃时间模型对冷却液的点燃时间进行了拟合,并且得到了冷却液的临界点燃热通量,利用PETRELLA R V等人提出的热危害模型计算出冷却液燃烧的X参数,并对其热危害进行了分类。

Aviation coolant is a combustible liquid used in aircraft engine and electronic equipment at work.It usually used in the high temperature ambient,the fire hazard of aviation coolant is often neglected in the study of oil fire risk.Therefore,sequences of experiments were conducted to study fire hazard of aviation coolant in this paper.The flash point of coolant was tested by the flash point meter and the hazard was graded.The combustion characteristics of coolant were studied based on the cone calorimeter and the basic fire parameters is obtained.The ignition time of coolant is fitted by Janssens'model and the critical ignition heat flux was obtained.Based on the thermal hazard model proposed by PETRELLA R V et al,X parameter of coolant combustion was obtained and its thermal hazard was classified.