核电站海水泵及附属排气管道应力分析及评定

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中图分类号：TL353；TB115.1 文献标志码：B

Stress analysis and assessment of seawater pump and auxiliary exhaust pipe in nuclear power plant

MA Ying，FENG Ji， WU Xiaofei，YU Junhui

Abstract： In order to ensure the reliability of the seawater pump and its auxiliary exhaust pipe in a nuclear power plant，and the stress intensity meets the requirements of the corresponding nuclear grade standards. Firstly，the geometric model of the seawater pump is established. Secondly，the threedimensional finite element model of the seawater pump and auxiliary exhaust pipe is established by Ansys software. Then，gravity，pressure， nozzle and seismic loads are applied in sequence and combined. Finally，the stress distribution of seawater pump and auxiliary exhaust pipe under different working conditions is checked according to ASME BPVC-II standard. The results show that the seawater pump and the auxiliary exhaust pipeline meet the stress limit under design，normal，abnormal，urgent and accidental conditions.

Key words： seawater pump； exhaust pipe； stress assessment； load combination； finite element； Ansys ；ASME BPVC-III standard

0引言

核反应堆在运行过程中会产生大量热量，需要及时散热以保持反应堆稳定运行。（剩余4364字）