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营口市某化工厂有三台10T/(?)锅炉,1985年12月初,该厂对2号锅炉打压时发现前水冷壁管胀口漏水,第二天又发现后水冷壁管胀口漏水,而前水冷壁管却不漏了。我们到现场作进一步检验时发现,炉膛内后水冷壁管中部的七根管子与上锅筒胀口处正在漏水,靠中间的三根管漏水较重,两侧的较轻;炉膛前水冷壁管中部的八根管子与上锅筒胀口处有漏水痕迹,靠中间的四根管水迹较重,两侧的较轻。这台锅炉是1980年5月南通锅炉厂制造的双锅筒纵置式水管锅炉,下锅筒比上锅筒约短一半,下锅筒位于锅炉整体后半段的下部,上锅筒的前半段伸至炉膛顶部,两锅筒间由弯水管相连。炉膛的前、后、左、右四面都布有水冷壁管,水冷壁管的上端与上锅筒胀接,下端分别与各下联箱焊接(见图1)。
Yingkou City, a chemical plant has three 10T / (?) Boiler, early December 1985, the plant on the 2nd boiler found that the former water wall tube bulging mouth leakage, found the next day water wall tube bulging mouth leakage, and Before the water wall tube is not leaked. We went to the scene for further testing found that the furnace after the water wall tubes in the middle of the seven tubes and the upper tube bulging mouth is leaking, by the middle of the three tubes leaking heavier, lighter on both sides; before the furnace water Eight pipes in the middle of the wall tube and the bulging mouth of the upper tube have water marks, by the middle of the four water pipes heavier on both sides of the lighter. The boiler is a double-drum vertical-type water-tube boiler manufactured by Nantong Boiler Works in May 1980, and the lower drum is about half shorter than the upper drum. The lower drum is located in the lower part of the latter half of the boiler. The first half of the upper drum Reached the top of the furnace, the two pots connected by the bend pipe. The front, rear, left and right sides of the hearth are covered with water-cooled wall tubes. The upper ends of the water-cooled wall tubes are swollen with the upper tube, and the lower ends are respectively welded with the lower headers (see Figure 1).