倾斜高温钠热管间歇沸腾影响机制研究  

Investigation on Influence Mechanism of Geyser Boiling on Inclined High-temperature Sodium Heat Pipe

作　　者：杨思远 马誉高 文青龙[1,2,4] 文爽 丁书华 贺林峰[5] 袁波[1,4] YANG Siyuan;MA Yugao;WEN Qinglong;WEN Shuang;DING Shuhua;HE Linfeng;YUAN Bo(Department of Nuclear Engineering,School of Energy and Power Engineering,Chongqing University,Chongqing 400044,China;Key Laboratory of Low Grade Energy Utilization Technologies and Systems,Chongqing University,Chongqing 400044,China;Nuclear Power Institute of China,Chengdu 610213,China;Liangjiang Laboratory for New Energy(Nuclear Energy and Power),Chongqing 400044,China;China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]重庆大学能源与动力工程学院核工程与技术系,重庆400044 [2]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044 [3]中国核动力研究设计院,四川成都610213 [4]两江新能源(核能与动力)实验室,重庆400044 [5]中国原子能科学研究院,北京102413

出　　处：《原子能科学技术》2025年第4期846-857,共12页Atomic Energy Science and Technology

基　　金：核反应堆技术全国重点实验室基金(KFKT-05-FW-HT-20220013)。

摘　　要：热管启动过程中存在的间歇沸腾现象会导致热管温度的振荡,严重时甚至导致热管破裂,对热管反应堆的安全运行造成威胁。为评估不同参数对间歇沸腾现象的影响规律,设计了碱金属热管间歇沸腾试验系统,以钠热管为对象开展了加热功率为150~1 300 W、倾角为45°~90°、冷凝段长度为50~60 cm工况下的间歇沸腾试验,分析了加热功率、倾角、冷却能力对间歇沸腾的影响,并从微观角度分析了间歇沸腾的发生机理。实验结果表明:间歇沸腾发生的功率区间为150~750 W,加热功率对间歇沸腾的影响并不单一;倾角为90°工况下间歇沸腾整体强度最大,温度振荡的周期和幅度分别为8.8~666.7 s和0.5~60.3℃;倾角越小,间歇沸腾强度越低,且发生的功率区间更大;冷却能力较弱时,热管容易从间歇沸腾阶段过渡到稳定运行阶段,间歇沸腾较弱;本试验结果可为热管冷却反应堆的运行工况优化提供参考。The heat pipe cooled reactor has become the current key development route because of its good inherent safety characteristics and modular design concept.As one of the important components of the reactor,the safe operation of the alkali metal heat pipe is essential.However,the geyser boiling phenomenon in the heat pipe will cause a lot of vibration in the heat pipe,which will lead to the rupture of the heat pipe in severe cases.At present,there are few published research results on the geyser boiling experiment of alkali metal heat pipes,and the influence of different parameters on the geyser boiling phenomenon is not fully evaluated.Therefore,in this paper,sodium metal heat pipes were used to carry out geyser boiling experiments and research on mechanisms.The experiment was carried out with heating power of 150-1 300 W,inclination angle of 45°-90° and condensing section length of 50-60 cm.The effects of heating power,inclination angle and cooling capacity on geyser boiling were analyzed.The results show that when the length of the condensing section is 60 cm and the inclination angle of the heat pipe is 60°-90°,the period and amplitude of geyser boiling decrease with the increase of heating power.In vertical working conditions,the average period is 736.4 s and the temperature amplitude is 55 ℃ when the power is 450 W.After the heating power gradually increases to 500,550and 600 W,the geyser boiling period drops to 70.2,32.9 and 28.1 s,and the amplitude of geyser boiling decreases to 27.2,17.2 and 16.6 ℃,respectively.However,the influence of power on the geyser boiling of sodium heat pipe is not single,and it shows different rules when the inclination angle is 45°.In the experimental range,the power range of geyser boiling is advanced and the intensity of geyser boiling increases with inclination angle.The overall intensity of geyser boiling is the highest at 90°,and the temperature oscillation period and amplitude are 8.8-666.7 s and 0.5-60.3 ℃,respectively.The cooling capacity affects the intensity a

关 键 词：热管反应堆 钠热管 间歇沸腾 温度振荡 影响机制 

分 类 号：TL33[核科学技术—核技术及应用]