文丘里式气泡发生器气泡碎化特性研究  

Characteristic of Bubble Breakup in Venturi-type Bubble Generator

作　　者：唐文偲 阎昌琪 孙立成 刘卫[2] 李华[2] 

机构地区：[1]哈尔滨工程大学核安全与仿真技术国防重点学科实验室,黑龙江哈尔滨150001 [2]中国科学院上海应用物理研究所,上海201800

出　　处：《原子能科学技术》2014年第5期844-848,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11175050);哈尔滨工程大学核安全与仿真技术国防重点学科实验室基金资助项目(HEUFN1102);中央高校基本科研业务费专项资金资助项目(HEUCFZ1122)

摘　　要：熔盐堆在运行过程中须不断地去除氙等气体裂变产物。熔盐堆除气系统中气泡发生器的作用是通过向回路中注入一定量的直径为0.5mm的小气泡,在扩散作用下吸收熔盐中的氙,最终气泡被分离出来,达到除氙的目的。在橡树岭国家实验室设计的基础上,本文为钍基熔盐研究堆设计气泡发生器,并在专门建造的水回路中对其工作特性进行了可视化研究。利用高速摄像系统跟踪气泡的运动和碎化过程,分析气液相流速对碎化后气泡尺寸的影响。结果表明:在实验条件下,当气体流量一定时,气泡尺寸随液体流量的增大而减小;当液体流量一定时,气泡尺寸随气体流量的增加而增大。During the operation of a molten salt reactor , the continuous removal of gaseous fission product 135 Xe from the circulating fuel has to be provided .As one of the key devices in the off-gas removal system ,the bubble generator is for generating tiny bubbles with average bubble diameter around 0.5 mm . Firstly , certain amount of helium bubbles are injected to the fuel , the bubbles absorb 135 Xe , and then these bubbles containing 135 Xe are stripped out of the fuel for removing 135 Xe in the liquid fuel . In the present study ,a new bubble generator was designed for TMSR referenced to the design of ORNL . Meanwhile , a water test loop was fabricated for visualization observation on the performance of the bubble generator .T he movement and breakup of the bubbles were recorded by a high speed camera .The effect of gas and liquid flow rates on generated bubble diameter was also analyzed . The results show that under experimental conditions ,with the increase of liquid flow rate ,the bubble size decreases＆amp;nbsp;with the increase of liquid flow rate when the gas flow rate remains unchanged ;the bubble size increases with the gas flow rate when the liquid flow rate is constant .

关 键 词：熔盐堆 气泡发生器 文丘里 气泡碎化 

分 类 号：TL334[核科学技术—核技术及应用]