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给出了用自由体法和应力分析设计法的原理对锅炉集箱热旋压封头进行应力分析和强度评定的方法。用自由体的厚壁公式和薄壁边界效应解计算应力是偏于安全的。给出的方法可以作为修订ＧＢ９２２２－８８《水管锅炉受压元件强度计算》时的参考。
A method of stress analysis and strength assessment of the header of a hot header is given by using the principle of free body method and stress analysis design method. Calculating stress using the free-body thick-wall formulation and the thin-walled boundary effect solution is biased towards safety. The given method can be used as a reference for revising GB9222-88 “Calculation of strength of pressure components in water tube boiler”.