本计算的目的是在设计所给定的热载荷条件下,遵照规范规定和设计要求,对安注箱进行热应力分析,以判定其是否具有承受热载荷的能力。分析时采用三维实体单元,由于结构不对称,计算采用整体建模(图1左)。为精确计入堆焊层对热应力的影响,对堆焊层进行了实体仿真建模。如果将支撑圈底面完全约束,由于热膨胀被完 The purpose of this calculation is to perform thermal stress analysis on the safety gauge box to determine whether it has the ability to withstand thermal loads, in accordance with the specifications and design requirements, under the given thermal load conditions. The analysis uses three-dimensional solid elements, due to structural asymmetry, the calculation using the overall modeling (Figure 1 left). In order to accurately calculate the influence of surfacing layer on thermal stress, solid modeling of surfacing layer was carried out. If the bottom surface of the support ring is completely restrained, it is finished due to thermal expansion