目前我国生产的快装锅炉,管板与锅壳之间的加强结构广泛采用角板拉撑趾部加焊小横板的全焊型角板拉撑(如图1)。此种结构型式是参照英国锅炉规范“BS2790:1973《焊接结构锅壳式锅炉》”设计的。从近几年的定期检查中,多次发现这种结构型式在角板与小横板与管板连接焊缝处时有裂纹产生。同时在角板与锅筒连接处也有拉裂出现。这显然 At present, China’s production of fast-loading boilers, tube plate and the strengthening of the structure between the pan widely used angle plate pull toe plus welding small horizontal plate all-welded corner braces (Figure 1). This type of structure is based on the British Boiler Code “BS2790: 1973 ” welded structure shell and tube boiler "design. From the regular inspections in recent years, many times found that this type of structure in the corner plate and small horizontal plate and tube plate joints when there are cracks at the weld. At the same time in the corner plate and drum connection also appeared to crack. This is obviously