在气焊、气割和火焰热加工等作业中,为防止乙炔火焰逆燃发生燃烧爆炸,一般都在焊炬或割炬与乙炔发生器或输气管道之间,安装乙炔网火防止器。在生产中,一般采用湿式乙炔回火防止器,由于湿式乙炔回火防止器的结构还存在一些问题,因此止火性能还不够可靠且使用受到气候的限制以及维护 In gas welding, gas cutting and flame thermal processing and other operations, in order to prevent flammable acetylene flame combustion explosion, generally in the torch or torch and acetylene generator or gas pipeline between the installation of acetylene fire prevention device. In production, the general use of wet acetylene tempering preventer, as wet acetylene tempering prevent the structure of the device there are still some problems, so the fire performance is not reliable enough and the use of weather restrictions and maintenance