基于一种结构钢质防火门的防烟性能研究

Research on smoke resistant performance based on a kind of structural steel fire resistant door

开发了一种全尺寸防火门防烟性能测试装置,并建立了一套测试程序,来研究不同压力差和温度下防火门的烟气泄漏速率。选取目前市面上典型结构的单扇与双扇钢质防火门,测试其防烟性能,发现典型钢质防火门在不同温度及压差下均有较大泄漏率,其防烟性能较差,无法有效阻挡火灾烟气。选取同尺寸防火门,对其加装三角形空心防烟密封条并进行防烟性能测试,结果表明,防烟密封条能有效减小门扇与门框间隙,从而减小防火门烟气泄漏率,提升其防烟性能;门扇数量对不同试验温度下防烟密封条的密封效果有一定影响,单扇门在加装三角形空心防烟密封条后防烟性能提升更多,且单扇防火门加装密封条后中等温度下的防烟性能提升幅度更大,而双扇防火门加装密封条后环境温度下的防烟性能提升幅度更大。

This study developed a full-size smoke resistant performance test device for fire resistant doors,and established a set of testing procedures to study the smoke leakage rate of fire resistant doors under different pressure differences and temperatures.Single and double steel fire resistant doors with typical structure on the market are selected to test their smoke resistant performance.It is found that typical steel fire resistant doors have large leakage rate under different temperature and pressure difference,and their smoke resistant performance is poor,which can't effectively prevent fire smoke.Select the fire resistant door with the same size,add triangle hollow smoke resistant sealing strip and conduct smoke resistant performance test,the results show that the smoke resistant sealing strip can effectively reduce the gap between the door and the door frame,so as to reduce the smoke leakage rate of the fire resistant door,improve its smoke resistant performance;The number of door leaf has a certain influence on the sealing effect of smoke resistant sealing strip at different test temperatures,the smoke resistant performance can improved more after added triangle hollow smoke resistant sealing strip,and the smoke resistant performance of the single fire resistant door added sealing strip can be improved at medium temperature,but the smoke resistant performance of the double fire resistant door added sealing strip can be improved at ambient temperature.