420t/h锅炉再热器向空排气管座及其附近管道裂纹的原因分析及对策

Analysis and Treatment on the Crack of the Corner Welding Line and the Exhausting Pipe for the Reheater of 420t/h Boiler

本文通过对420t/h锅炉再热器向空排汽管座裂纹的形状、位置及分布形式的分析 ,得出冷凝水的回流是产生裂纹的主要原因 ,并提出几种方案 。

By analysing the shape,position and distributing of the crack of the corner welding line and the exhausting pipe for the reheater of 420t/h boiler,the author considers that the main reason of producing crack is refluence of condensate.Moreover,several solutions are presented for reference.