广东珠海金湾发电有限公司的600MW机组4号锅炉的水冷壁底部的左右侧水封槽上部出现了水冷壁泄漏。经检查，发现爆管的主要原因是炉管与密封闸板连接处设计与安装不当。该炉管连接处存在交变应力，运行几年后在应力集中的弯头处爆裂。通过相应改造，取得了较好的效果，可以为同行处理类似事件提供参考。

The boiler Wall of No. 4 boiler of 600MW unit in Guangdong Jinwan Power Generation Co., Ltd., leakage at the position of the left and right side, in the bottom of the water wall, in the upper part of the seal tank. After inspection and analysis, we found that the design and installation improper leaded to burst pipes. The furnace tube, which connections exist alternating stress and stress concentration, burst at the elbow after years of operation. So we made a corresponding transformation, achieved good results. We hope that this case can offer a reference for the similar events.