复杂载荷作用下带夹套缩聚釜泄漏失效分析与改进设计

Failure Analysis of Leakage Occurred in Jacketed Poly-condensation Autoclave with Complex Loads

某带夹套缩聚釜反应容器承受温度、压力交变载荷,在使用过程中发生严重的泄漏问题。采用有限元方法进行模拟试算与结果对比,发现设计缺陷并对原结构进行改进,然后对改进后的设备进行热-结构间接耦合分析,同时按不同载荷工况施加交变机械载荷,最后对所得结果进行应力及疲劳分析校核,成功解决了设备的泄漏问题。研究结果为带夹套结构容器的优化设计提供了依据。

Serious leakage occurred in a jacketed polycondensation autoclave which is subjected with temperature and pressure cycles. By using finite element method, the simulation and calculation was carried out and the result was analyzed. It was found that there were shortcomings in original design. Therefore, the improvement was carried out. For improved equipment, under various working conditions with cyclic mechanical loads, thermal-structural analysis was, then, performed. The results were passed in checking for stresses and fatigue capacity. In this way, the leakage problem has been solved. The studied result presented in this paper provides the basis for optimum design of jacketed vessels.