炉膛内燃料燃烧后产生大量热,通过炉膛四周管子内的水吸收,此管于称为锅炉水冷壁,管内的水或汽称为介质.由于水冷壁管内介质的循环方式不同,分为自然循环锅筒锅炉、控制循环锅炉、强制循环直流锅炉等.自然循环锅筒锅炉 The combustion of fuel in the furnace produces a large amount of heat, which is absorbed by the water in the pipe around the furnace, which is called as the water wall or the steam of the boiler, and is called as the medium.As the circulating mode of the medium in the water-cooled wall pipe is divided into natural circulation Drum boiler, control cycle boiler, forced circulation boiler, etc. Natural circulation drum boiler