带耐火衬里高温反应器密封锥结构的设计

耐火衬里及支撑结构设计的可靠性是保证高温反应器壳体温度小于设计温度的关键因素。针对耐火衬里结构失效导致反应器壳体温度超过设计温度的问题,提出了一种双金属焊接的密封锥结构。该结构具有支撑金属衬里的作用以及将耐火材料与金属衬里之间的膨胀空间分割成多个密闭空间以阻止高温气体的流动,进而提高隔热可靠性。采用ANSYS软件中APDL语言建立了密封锥连接结构的有限元模型,通过研究密封锥不同角度以及厚度对计算结果的影响,得出了密封锥的最佳结构参数,并满足ASME标准的应力强度评定要求。模拟结果可为此类高温反应器耐火衬里结构的设计提供参考依据。

Cone Seal Structure Design of Reactor with Refractory Liner under Elevated Temperature

The design reliability of the refractory liner and support structure is a key factor to ensure that the reactor shell temperature is lower than its design temperature.In order to solve the problem of the reactor shell temperature exceeding its design temperature due to refractory liner structure failure,the cone seal structure with bimetal welding was proposed.This structure can support the metal liner,and divide the expansion space between the refractory and metal liner into multiple confined spaces to prevent the flow of the hot gas,and improve insulation reliability.The finite element model of the cone seal connection structure was established based on the APDL language of ANSYS software,and by investigating the influence of different angles and thicknesses of the cone seal on calculation results,the optimal structure parameters of the cone seal were obtained,which meet the stress intensity assessment requirements of ASME standard.The simulation results can provide practical references for the design of the refractory liner structure of the reactor under elevated temperature.