核電站海水泵及附屬排氣管道應(yīng)力分析及評(píng)定

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中圖分類號(hào)：TL353；TB115.1 文獻(xiàn)標(biāo)志碼：B

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

MA Ying，F(xiàn)ENG 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

核反應(yīng)堆在運(yùn)行過程中會(huì)產(chǎn)生大量熱量，需要及時(shí)散熱以保持反應(yīng)堆穩(wěn)定運(yùn)行。（剩余4364字）