水喷雾系统抑制电动汽车火灾有效性实验研究

为解决现有消防手段难以有效扑灭电动汽车火灾的问题,设计了水喷雾隔热阻火系统和拖车式车载水喷雾灭火降温系统。对模拟电动汽车火灾进行灭火有效性全尺度实验。结果表明,在现有工况条件下,水喷雾隔热阻火系统能有效抑制车辆底盘的射流火焰,可防止火灾向相邻车辆蔓延,但受安装位置限制,该系统对驾驶舱内部火焰的抑制和降温效果较差,灭火后驾驶舱出现复燃;拖车式车载水喷雾灭火降温系统对车辆底盘的射流火焰抑制能力较差,其扑灭车身内部火灾的效能提升需进一步探究。

Experimental study on the effectiveness of water spray systems in suppressing electric vehicle fires

To solve the problem that existing fire firefighting methods are difficult to extinguish electric vehicle fires effectively, a water spray thermal attenuation fire suppression system and a trailer-mounted water spray fire suppression system were designed. The effects of these water spray systems were evaluated via full-scale electric vehicle fire tests. Under the working conditions of the tests, the results indicated that the water mist thermal attenuation fire suppression system could effectively suppress and cool the flame at the vehicle chassis but had a poor cooling effect on the cockpit flame, resulting in the re-ignition of combustibles of the cab. The trailer-mounted water spray fire suppression system could not suppress the jet fire at the vehicle chassis, and its effectiveness in extinguishing the flame inside the vehicle needs to be further investigated.