作者：王建帆, 苏燕辰
作者单位：西南交通大学机械工程学院, 四川 成都 610031
关键词：热释放速率;轰燃;高速列车;材料测试
摘要：
为得到crh2型高速列车燃烧热释放速率、烟气运动等表征燃烧特性的数据曲线,基于iso 5660-12002和iso 17162002标准对车用主要材料进行燃烧实验,并建立pyrosim高速列车4号车厢模型进行燃烧仿真,得出不同起火位置、不同通风条件下列车热释放速率曲线、温度、热流量和烟层高度的变化情况,并根据轰燃发生的热释放速率判据判断各个工况是否发生轰燃,分析crh2型高速列车的防火性能。结果表明:座椅着火会使列车内部发生轰燃现象,轰燃发生之后通风会由于进入的空气对车内燃烧起助燃作用。
materials testing and flashover research in high-speed trains
wang jianfan, su yanchen
school of mechanical and engineering, southwest jiaotong university, chengdu 610031, china
abstract: in order to get the data curves for combustion characteristics like heat release rate (hrr) and smoke movement of crh2 high-speed trains, the authors have tested the automotive materials based on the iso 5660-1——2002 standard and the iso 1716——2002 standard and have established a pyrosim model for the no.4 compartment on a high-speed train accordingly. through combustion simulation, the authors have obtained the hrr curve, temperature, heat flux and smoke layer height of the train at different ignition locations and under different ventilation conditions. in addition, the authors have used the flashover hrr to determine whether flashover occurred under each working condition and to analyze the fire resistance of the high-speed train crh2. the study has indicated that the fire on the seat can cause flashover inside the train and will spread quickly if fresh air is let in.
keywords: heat release rate;flashover;high-speed trains;materials testing
2016, 42(2): 127-131 收稿日期: 2015-3-11;收到修改稿日期: 2015-4-16
基金项目:
作者简介: 王建帆(1989-),女,山西汾阳市人,专业方向为高铁防火测试。
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