液氮温区低温气体引射器的设计及实验研究  

Design and experiment of cryogenic gas ejector at liquid nitrogen temperature

作　　者：贾启明[1,2] 龚领会 李正宇[1] 张卓 陈昊[3] 朱伟平[1] Jia Qiming;Gong Linghui;Li Zhengyu;Zhang Zhuo;Chen Hao;Zhu Weiping(State Key Laboratory of Technologies in Space Cryogenic Propellants(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences), Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China;Institute of High Energy Physics Chinese Academy of Sciences,Beijing 100049, China)

机构地区：[1]航天低温推进剂技术国家重点实验室(中国科学院理化技术研究所),北京100190 [2]中国科学院大学,北京100049 [3]中国科学院高能物理研究所,北京100049

出　　处：《低温工程》2020年第5期1-6,共6页Cryogenics

基　　金：中国科学院重点部署项目资助(基金号:ZDRW-CN-2020-3)。

摘　　要：采用低温流体提供冷量时,由于热负载的波动,低温液体蒸发量和腔体内部压力会随之变化,为保持其稳定,设计了一种用于液氮温区的低温引射器,可有效地将饱和氮气从储罐中引出。介绍了低温气体引射器的设计方法并开展实验研究,发现随着工作压力和引射压力的升高,出口压力和引射比不断升高。When a cryogenic fluidis used to provide cooling capacitiy due to the variation of thermal load,the evaporation of cryogenic liquid and the internal pressure of the cavity will changes correspondingly.A cryogenic gas ejector is designed for liquid nitrogen temperature which can effectively draw satuated nitrogen from the storage tand.The method of structural design method is presented and experimental research is carried out.It is found that outlet pressure and ejection ration in crease with the increase of primary pressure and suction pressure.

关 键 词：低温 气体引射器 设计方法 实验研究 

分 类 号：TB657[一般工业技术—制冷工程] TB66