网幕通道式液体获取装置相分离特性低温实验研究  

Cryogenic experimental study on the phase separation performance of screen channel liquid acquisition device

作　　者：王晔 杨光[1] 金鑫 耑锐 任枫 汪彬 吴静怡[1] WANG Ye;YANG Guang;JIN Xin;ZHUAN Rui;REN Feng;WANG Bin;WU Jingyi(Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Institute of Aerospace System Engineering,Shanghai 201109,China)

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]上海宇航系统工程研究所,上海201109

出　　处：《航空动力学报》2024年第12期246-253,共8页Journal of Aerospace Power

基　　金：国家自然科学基金重点项目(51936006);中国航天科技集团第八研究院产学研合作基金资助项目(USCAST2020-15);上海市科技计划项目(20YF1447900)。

摘　　要：为研究网幕通道式液体获取装置的运行性能,搭建了以液氮为工质的液体输运实验系统,研究了网幕通道在稳定运行工况和临界泡破失效工况下的相分离性能。获得了不同网幕规格、不同气体暴露长度下通道总压损与液体流量的变化规律,分析了通道相分离失效的临界压力以及最大液体获取流量。实验结果表明:通道总压降按照203×1600网、130×1100网和325×2300网的顺序逐渐增加,该趋势与多孔网幕自身的压降预测规律一致。网幕自身的泡破压力研究能够反映网幕通道的极限工作特性。实验证明在网幕规格的选择上,流动压损与泡破压力存在明显的博弈关系。重力因素对通道相分离性能的影响体现在重力静压损和气体覆盖率两方面,所获得的低温实验数据能够指导网幕通道的选型优化。Gas-free liquid delivery experiments for liquid nitrogen were conducted to evaluate the performance of the screen channel liquid acquisition devices.The phase separation capability of the screen channel was investigated in detail under successful separation conditions and critical separation failure conditions.The influences of the total channel flow resistance and liquid flow rate of the channel under different screen specifications and the exposed length of the channel to gas phase were obtained,while the critical breakthrough failure pressure and the maximum achievable flow rate were analyzed.Experimental results indicated that the total pressure loss in the screen channel increased with the trend of 203×1600 screen,130×1100 screen,and 325×2300 screen.This trend of the channel flow resistance was similar to the trend of the screen pressure drop.The bubble point pressure tested for the porous screen can be directly applied to the dynamic separation processes of the screen channel.Moreover,experimental results indicated that there was a best choice of the screen specifications to balance between the flow resistance and the breakthrough failure threshold.The influence of the gravity on the separation performance was reflected on the caused static pressure loss and the gas coverage ration on the screen channel.The cryogenic experimental results may provide a guidance for practical application of the screen channel liquid acquisition devices.

关 键 词：低温推进剂 网幕通道式液体获取装置 相分离特性 液体在轨管理 多孔网幕 

分 类 号：V511.6[航空宇航科学与技术—航空宇航推进理论与工程]