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废热锅炉换热管分布的不对称性， 使得管板和筒体等部件的温度场与应力场分析十分困难。为此， 运用有限元法对稳态温度场作了计算， 求得管板、筒体等部件的平均温度、内外壁温差， 并将这些参数作为应力场分析的热载荷； 将废热锅炉离散为由板壳元和杆单元组成的空间结构， 对自重、压力、温度组合的４ 种工况进行计算， 得到管板、筒体等部件的应力场分布规律。根据最大当量应力值对各部件做了强度校核， 为废热锅炉各部件的合理设计和安全评定提供了可靠的理论依据。
The asymmetry of heat pipe distribution in waste heat boiler makes it difficult to analyze the temperature field and stress field of tube plate and cylinder. Therefore, the steady-state temperature field is calculated by finite element method, and the average temperature, the temperature difference between the inner and outer walls of the tube plate, cylinder and other components are calculated and these parameters are taken as the thermal load for stress field analysis. The waste heat boiler is discretized into The space structure composed of the shell element and the rod element is used to calculate the four kinds of working conditions of the self-weight, pressure and temperature combination, and the stress field distribution rules of the tube plate, cylinder and other components are obtained. Based on the maximum equivalent stress value, the intensity of each component was checked, which provided a reliable theoretical basis for the rational design and safety assessment of each component of the waste heat boiler.