气体灭火系统启动时会向防护区喷放大量灭火气体，引起防护区空气压力瞬间升高；除此之外，火灾燃烧产生的热量也会使室内空气压力有所升高。过高的压力有可能会破坏防护区的维护结构，造成灭火失败、火势蔓延的后果。泄压口平时处于关闭状态，在气体灭火系统启动喷放，防护区压力升高到设定值后自动打开释放压力，避免防护区压力升高对防护区维护结构的破坏，泄压口是气体灭火设备重要的辅助配套装置！
泄压口面积按相应气体灭火系统设计规定计算。
The pressure relief device area shall be calculated as the corresponding gas extinguishing system formula.
防护区应设置泄压口，防护区设置的泄压口，宜设在外墙上，安装高度应为室内高度的三分之二处。
Set up the pressure relief device in the protection area, it shall be placed over 2/3 of the net height in the protection area, shall be set up in the outer wall.
建立了绝热稳态爆炸泄压计算模型，对不同泄压口位置情况下油气混合物爆炸泄压过程中压力、温度等参数进行了计算。
Established is a calculation model of isolation and stable state explosive pressure relief and calculated are such parameters as pressure and temperature during explosive pressure relief.
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