CNG加气站抑爆系统研制

Studies on explosion suppression system for CNG stations

现有CNG加气站普遍缺少预防和控制火灾与爆炸灾害事故的综合配套技术,特别是缺少先进的自动快速灭火抑爆技术及装备。CNG加气站现有消防设施动作时间长,不能有效防止天然气的爆炸,为此,开发研制了产气式自动干粉抑爆系统,由紫外传感器、控制器、抑爆器组成,可用于爆炸性气体(粉尘)场所的敞开或半敞开空间抑爆。当发生气体(粉尘)燃烧、爆炸时,紫外传感器接收火焰信号,传送至控制器,控制器产生触发电压,使抑爆器的产气剂释放出大量气体,驱动快速喷撒出干粉灭火剂,形成足够浓度的灭火剂粉雾体,有效扑灭爆炸火焰,具有动作速度快、抗干扰能力强、可靠性高、安装使用方便等优点,在天然气模拟爆炸试验中能有效抑制天然气爆炸,可用于CNG加气站或其他燃烧爆炸性气体场所,提高其整体防灾抗灾能力。

In general, the present CNG stations lack integrative fire and explosion prevention and control matching techniques. Especially, they lack advanced automatic rapid fire extinguishing and explosion suppression techniques and facilities. To remove these safety hazards, an automatic gas-producing dry powder explosion suppression system has been developed through technical improvement. The system which consists of ultraviolet sensor, controller and explosive suppressor, can be effectively used in open or half open area with some explosive gas or combustive powder. Its working principle is introduced here: when a gas or powder starts a flame or explosion, the ultraviolet sensor will acquire the signal and sent it to the controller to produce the trigger voltage, and then the explosive suppressor will release a great number of gas promptly spraying dry powder extinguishing agents, which thereby form extinguishing agent smoke and effectively extinguish explosion flame. It is rapid and of strong anti-interference ability, high reliability and can be fixed easily. It is capable of effectively suppressing natural gas explosion in the simulative gas explosion test. It can be applied in CNG stations or other site where has explosive and combustible gas whereby to enhance the overall accident control ability.