充注率及压力控制带对热力排气系统性能的影响  

Effects of Filling Ratio and Pressure Control Band on Thermodynamic Vent System Performance

作　　者：陈忠灿 秦旭进 李鹏 孙培杰 汪彬[1] 黄永华[1] CHEN Zhongcan;QIN Xujin;LI Peng;SUN Peijie;WANG Bin;HUANG Yonghua(Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China;-Aerospace System Engineering Shanghai,Shanghai 201108,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201108

出　　处：《制冷技术》2018年第3期1-7,共7页Chinese Journal of Refrigeration Technology

基　　金：国家自然科学基金(No.51676118);航天先进技术联合研究中心技术创新项目(No.USCAST2016-32)

摘　　要：热力排气系统是通过流体混合与节流换热排气双重作用实现低温推进剂在轨长期贮存的一种有效的压力控制技术。本研究搭建了以R141b为气液相变存储介质的室温温区热力排气系统模拟装置,进行了介质充注率分别为35%、50%、65%和压力控制带分别为(80~85)kPa、(80~90)kPa、(80~95)kPa的贮箱压力控制实验研究,获得了充注率及压力带对热力排气系统作用下贮箱增压特性和排气损失的影响规律。研究结果表明,充注率越大,排气损失越大;随着压力控制带宽度的增加,排气损失先减小后增大。上述结果对今后液氮、液氧等低温工质的热力排气研究具有指导作用。Thermodynamic vent system（TVS） is deemed as an efficient pressure control technique for long-term on-orbit storage of cryogenic propellants by fluid mixing and a combination of throttling and heat exchanging before venting. The effects of fill level（35%, 50%, 65%） and pressure control band（80～85 kPa, 80～90 kPa, 80～95 kPa） on pressurization characteristics and mass loss were investigated on a simulator of TVS, which works at room temperature with R141 b as the phase-change working substance. The test results show that the mass loss increases with the increase of fill level. The mass loss decreases firstly and then increases with the increase of the width pressure control band. These results can be used as a guide for the investigation of TVS using cryogenic liquid（such as liquid oxygen or liquid nitrogen） as working fluid.

关 键 词：推进剂贮存 相变 热力排气 充注率 压力控制带 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]