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上钢三厂轧三车间加热炉炉底横向水管原有27根,管径159毫米,壁厚16毫米,水管间距1160毫米。实践经验和强度计算都表明原来的炉底结构设计是保守的。先后经过两次改革,将横水管减少到9根,管径不变,在加热段的水管间距减至2320毫米,预热段的间距改为4～6米。同时将加热段的支撑管由原来的凹子形改为直立式,预热段则
On the steel plant three rolling mill furnace horizontal furnace bottom horizontal 27, diameter 159 mm, wall thickness 16 mm, pipe spacing 1160 mm. Practical experience and strength calculations have shown that the original design of the furnace bottom structure is conservative. After two reforms, the number of horizontal pipes was reduced to 9 with the same pipe diameter. The water pipe spacing in the heating section was reduced to 2,320 mm, and the interval between preheating sections was changed to 4 to 6 meters. At the same time the heating segment of the support tube from the original concave-shaped into vertical, preheating segment