抗热冲击稳压器双锥密封结构设计优化研究  

Design Optimization of Thermal Shock-Resistance Double-Cone Seal Structure of Pressurizer

作　　者：陈聪[1] 吴舸[1] 傅孝龙[1] 唐彬[1] 郑洪涛[1] 李鹏飞[1] 王月 Chen Cong;Wu Ge;Fu Xiaolong;Tang Bin;Zheng Hongtao;Li Pengfei;Wang Yue(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China;China Chengda Engineering Co.Ltd.,Chengdu,610000,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213 [2]中国成达工程有限公司,成都610000

出　　处：《核动力工程》2018年第4期176-181,共6页Nuclear Power Engineering

摘　　要：通过开展稳压器双锥密封结构温度分布仿真、密封性能分析,获得了密封结构的温度分布和密封面接触应力随时间变化的规律,结合试验现象,确认了温度骤变带来的热冲击是双锥密封结构泄漏的诱因。为提高该密封结构对温度变化的适应性,提出了一种双锥密封结构的抗热冲击技术,即:将一种结构简单且便于安装的抗热冲击屏蔽应用于双锥密封结构,以提高其抗热冲击能力。计算结果表明,该技术有效降低了稳压器双锥密封结构承受的热冲击,对抑制人孔密封处的泄漏效果明显,提高了密封结构的可靠性。Based on the temperature field simulation and sealing performance analysis of the double-cone seal structure, the change of temperature distributions and contact stress of sealing surface along with time were systematically studied. The results indicated that the temperature impact caused by the radical change of temperature was the main reason for the leakage of the double-cone seal structure. To improve the adaptability of the seal structure to temperature changes, a thermal shock technology of the double-cone seal structure is proposed, i.e., a simple and easy-to-installation heat-shock shield is applied to the double-cone seal structure to improve its capacity of resisting the thermal shock. The analysis showed that, this technology can effectively decrease the thermal shock effects on the sealing surface, greatly restrain the decreasing trend of the contact stress, and improve the reliability of the double-cone seal structure.

关 键 词：双锥密封 密封性能 抗热冲击技术 结构优化 

分 类 号：TL353.14[核科学技术—核技术及应用]