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可控气氛连续热处理炉运行中,为了防止炉门开启时,外界空气进入前室、后室与保护气体混合发生爆炸,除了采取在炉子前室、后室设有防爆安全阀等措施外、还在炉门处设有火帘,将炉内外气体隔离。火帘是靠常燃烧咀的火焰点燃的。如果由于某种原因造成原料气中断,使常燃烧咀火焰熄灭,火帘不能点燃,就可能引起事故。随着自动化程度的不断提高,为了保证生产安全可靠地进行,国外可控气氛连续热处理设备一般都在炉门处设置火焰继电器之类的火焰监测装置,国内同类产品上尚无此种装置。
Controllable atmosphere continuous heat treatment furnace operation, in order to prevent the door open, the outside air into the anterior chamber, the rear chamber and the protective gas mixture explosion, in addition to taking the furnace chamber, the back room with explosion-proof safety valve and other measures In the oven door with a curtain, the gas inside and outside the furnace isolated. The fire curtain is lit by the flame of a normal burning nozzle. If for some reason caused by the interruption of the feed gas, so that the normal burning Tsui flame extinguished, the fire curtain can not be ignited, it may cause an accident. With the continuous improvement of automation, in order to ensure the production safety and reliability, foreign controlled atmosphere continuous heat treatment equipment are generally set at the door of the flame relay such flame monitoring device, similar products in China there is no such device.