微型热管的增材制造与传热性能分析  

An Analysis of Additive Manufacturing and Heat Transfer Performance of Miniature Heat Pipe

作　　者：沈琼[1] 李志松[2] SHEN Qiong;LI Zhisong

机构地区：[1]上海市计量测试技术研究院上海市在线检测与控制技术重点实验室,上海200233 [2]上海卫星工程研究所,上海201109

出　　处：《科技创新与应用》2021年第21期48-52,55,共6页Technology Innovation and Application

基　　金：上海市市场监督管理局科研项目(编号:2019-19)。

摘　　要：传热学与制造学之间的交汇应用往往存在着一定矛盾,高效的换热器通常会伴随着较大的制造难度和成本,微纳卫星热控系统中的小型热管就是一个例子。小型热管由于当量直径小,不但制作困难,而且传热性能严重受限。本研究拟采用3D金属打印的方法突破这一矛盾。通过这一增材制造技术生产小型管壳及充装口,配合新型的吸液芯结构,制成以氨为工质的小型干线热管。随后进行了一系列热性能测试验证,初步实现了热驱动相变传热的设计目的。3D金属打印技术在小型热管的研制过程中,突破了常规金属生产工艺的小型化瓶颈,提高了结构的设计性,大幅节约了管壳制作的时间和经济成本,并满足了热管对于管壳材料在导热性、密封性、耐压能力等方面的要求,获得了良好的综合效益。There is often a certain contradiction in the confluence and application of heat transfer and manufacturing.High-efficiency heat exchangers are usually accompanied by greater manufacturing difficulty and cost.The small heat pipe in the thermal control system of micro-nano satellite is an example.Because of the small equivalent diameter,the small heat pipe is not only difficult to make,but also seriously limited in heat transfer performance.This study intends to use 3D metal printing to break through this contradiction.Through this additive manufacturing technology,a small tube shell and filling port are produced,combined with a new liquid suction core structure to make a small trunk heat pipe with ammonia as the working medium.Then,a series of thermal performance tests are carried out to achieve the design purpose of thermally driven phase change heat transfer.In the development process of miniature heat pipe,3D metal printing technology breaks through the miniaturization bottleneck of conventional metal production process,improves the design of structure,and greatly saves the time and economic cost of shell manufacturing;besides,it also meets the requirements of heat pipe for shell materials in thermal conductivity,sealing,pressure resistance and so on,and obtains good comprehensive benefits.

关 键 词：3D金属打印 微型热管 相变 传热 

分 类 号：V474[航空宇航科学与技术—飞行器设计]