反应器斜插切向弯管接口相贯结构优化及制造技术

Optimization and fabrication technology of intersecting joint of cylinder with angle-inserting elbow

为了优化某反应器斜插切向弯管与筒体组对的相贯结构,采用数值模拟技术对内压作用下的异形相贯结构进行了应力分析,在反应器产品耐压试验过程中对异形相贯结构进行应变检测和应力计算,两种试验结果表明其应力分布趋势一致,指出了两种试验应力水平存在差异的影响因素。数值分析表明相贯结构的材料得到充分利用,开发应用多项技术使结构已处于优化状态,包括斜插切向入口的壳体开口加工及相贯焊缝的高效施焊,异形开孔接管的整体补强方法在该案例的应用安全可靠,并指出了进一步优化的方向。

In order to optimize the intersecting structure of an angle-inserting elbow with reactor cylinder, the stress of the special-shaped tubular structure subjected to internal pressure was analyzed by numerical simulation technique, and the strain detection and stress calculation of the special-shaped tubular structure were carried out during the pressure test of reactor products.The two test results show that the trend of the stress distribution is consistent, and the influencing factors of the difference between the two test stress levels are pointed out.The numerical analysis shows that the material of the intersecting structure is fully utilized, and the structure is in an optimized state through the development and application of multiple technologies.The invention comprises shell opening processing with oblique insertion tangential inlet and high-efficiency welding of intersecting welds.The application of the overall reinforcement method of the special-shaped nozzle in this case is safe and reliable.Finally, the direction of further optimization is pointed out.