燃煤锅炉本体与灰坑的密封,长期以来,设计和制造单位一直采用水封结构(见图1)。这一结构从理论上讲密封性能很好,但实际使用并不理想,如:运行中往往先水封挂砖脱落,而后灰渣进入水封槽内,使水封局部断水,导致缺水处的水封槽及水封插板烧坏,从而产生漏风,影响炉效;在检修中不仅要消耗很多钢板和耐火材料,而且还要化一个星期的时间来 For coal-fired boiler bodies and ash pits, the design and manufacturing units have been using water-tight structures for a long time (see Figure 1). This structure in theory, the sealing performance is good, but the actual use is not ideal, such as: running often hanging seal hanging off, and then ash into the seal tank, the water seal partial water, leading to water shortages Of the water seal slot and water seal board burned out, resulting in air leakage, affecting the furnace efficiency; in the maintenance of not only consume a lot of steel and refractory materials, but also to a week’s time