快装锅炉是目前使用比较多的一种炉型。笔者在多年的实践中发现,此类锅炉两侧集箱的排污系统不尽合理,排污效果不佳。笔者曾在锅炉定检中,多次发现集箱后半段内有大量泥垢,并呈小丘状分布,究其原因,主要是排污管布置在集箱中段,且锅炉前后高低不平所造成的。众所周知,锅炉在安装就位时,为了保证锅筒主要受热面的排污效果,要求锅筒呈轴向倾斜,也就是说前高后低,这样就使得集箱中段的排污管不在最低位置了。排污时,集箱最低处积存的泥垢就很难排出。尽管有些使用单位采取加大排污量的做法,但排污还是达不到理想的效果,相反还增加了排污热损失,浪费了大量燃料,影响了锅炉出力。由于集箱后半段内泥垢的大量存在,造成集箱流通截面积减少,水循环的流 Quick installation of the boiler is currently used more of a furnace. I found in many years of practice, the header on both sides of such boilers sewage system is not reasonable, the sewage effect is not good. I have been in the boiler scheduled seizure, many times found that the second half of the header after a large number of dirt, and showed the distribution of hillocks, the reason, mainly in the sewage pipe arranged in the middle of the header, and the level of the boiler caused by uneven . As we all know, the boiler is in place, in order to ensure the drum main heating surface of the sewage effect, requires the drum was axially tilted, that is, after the high before the low, so that the header of the sewage pipe is not in the lowest position. Drainage, the minimum collection tank collected mud is difficult to discharge. Although some units to take to increase emissions, but the sewage is still not achieve the desired effect, on the contrary it also increased emissions heat loss, waste a lot of fuel, affecting the boiler output. Due to the large amount of dirt in the second half of the header, the cross-sectional area of ​​the header is reduced and the flow of the water cycle