论文部分内容阅读
平焰烧咀是国外在70年代初发展起来的一种新型烧咀,已广泛应用于国外的大中型连续式加热炉上作为炉顶烧咀,它的工作原理系利用“科安达”效应,使火焰形成附壁射流和卷吸现象。空气沿切线方向或经螺旋导向片引入,在烧咀的燃烧孔道内形成高速旋转,从而产生较大的离心力,使气流获得较大的径向速度,焰炬的长度随径向速度增加而缩短。高速旋转的空气把低速进入的燃料吸附在空气流股内,燃料与空气边混合边燃烧边前进,经过喇叭形或大张角出口的烧咀砖,形成扩
Flat flame burners Tsui is a new type of burned Tsui developed abroad in the early 1970s and has been widely used in large and medium-sized continuous heating furnaces abroad as the top burners. Its working principle is based on the “Coanda effect” So that the formation of flame and attached Coanda jet entangled phenomenon. The air is introduced along the tangential direction or through the helical guide piece to form a high-speed rotation in the combustion tunnel of the burner nozzle, resulting in a greater centrifugal force and a greater radial velocity of the air flow. The length of the torch is shortened as the radial velocity increases . High-speed rotating air to low-speed fuel into the air flow into the unit, the fuel mixed with the air while the combustion side of the advance, through the horn or large angle angle burner exit Tsui brick, the formation of expansion