深空探测RTPV高温多层隔热技术研究  

Preparation and Thermal Performance Study of Multilayer Insulation in RTPV for Deep Space Exploration

作　　者：苏生[1,2] 艾素芬 邱家稳 宋馨[1,2] 田岱[1] 马彬 曹亚茹 SU Sheng;AI Sufen;QIU Jiawen;SONG Xin;TIAN Dai;MA Bin;CAO Yaru(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;Beijing Key Laboratory of Space Thermal Control Technology,Beijing 100094,China;Beijing Spacecrafts,Beijing 100094,China;China Academy of Space Technology,Beijing 100094,China;School of Materials Science,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]空间热控技术北京市重点实验室,北京100094 [3]北京卫星制造厂有限公司,北京100094 [4]中国空间技术研究院,北京100094 [5]西北工业大学材料学院,西安710072

出　　处：《深空探测学报（中英文）》2024年第5期462-468,共7页Journal Of Deep Space Exploration

基　　金：国家自然科学基金项目(U20B2008)。

摘　　要：RTPV作为一种用于深空探测的高效率核电源,其高温隔热技术是影响系统热电转换效率的关键因素之一。针对基于陶瓷点阵间隔层、钼箔反射屏的新型高温多层隔热组件,对比了烧结法、物理气相沉积法、大气等离子喷涂等陶瓷点阵制备工艺,优选出大气等离子喷涂法,成功在钼箔表面制备了直径1.5 mm、厚度0.1 mm、间距15 mm的ZrO2颗粒点阵,并将其作为高温多层的1个单元。仿真结果显示,氧化锆陶瓷点阵高温多层隔热组件的瞬态与稳态隔热性能均优于传统高温多层隔热组件,且具有在小尺寸下边缘漏热小、不产生多余物、长期耐受1000℃高温的特点,可满足深空探测同位素热光伏电源的隔热需求。For RTPV,As a high-efficiency deep space nuclear power for deep space exploration,RTPVit’s high temperature insulation is one of the key factors affecting the system’s thermoelectric conversion efficiency.A new high temperature MLI using ceramic lattice separator and molybdenum foil reflector was studied.Based on a comparison of the ceramic lattice preparation processes such as sintering,PVD and atmospheric plasma spraying,ZrO2 lattice with a diameter of 1.5mm,a thickness of 0.1mm,and spacing of 15mm was prepared on molybdenum foil through atmospheric plasma spraying,which was used as 1 unit of MLI.The thermal insulation performance of a 10 units high temperature MLI was simulated.The results show that,its transient and steady thermal insulation performance is better than that of the traditional high temperature MLI.It can meet the insulation requirements of deep space RTPV with little edge heat leakage,no residue generation,and long term resistance to 1000℃in a small size.

关 键 词：陶瓷点阵间隔层 钼箔反射屏 高温多层隔热 同位素热光伏 深空探测 

分 类 号：V416[航空宇航科学与技术—航空宇航推进理论与工程]