热管的真空钎焊工艺及其在真空集热管上的应用  

Study on vacuum brazing of heat pipe and its application in vacuum collector tube

作　　者：王雷雷[1] 史继富[1] 李育坚 朱艳青[1] 徐刚[1] 李春生[1] 孙燕[1] 

机构地区：[1]中国科学院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验室,广东广州510640

出　　处：《真空》2014年第1期68-72,共5页Vacuum

基　　金：广东省战略性新兴产业核心技术攻关项目(2011A032304003);广东省中国科学院全面战略合作项目(2011B090300044;2012B091100244);中科院广州能源所所长创新基金培育专项(y307p81001);肇庆特色产业项目(磁控溅射与离子镀联用大型连续式镀膜技术的研发);863子课题(2012AA050601)资助下完成的

摘　　要：本文首先研究了真空钎焊条件对热管性能的影响,进而在最优条件下制作了热管及热管式真空集热管,并和市场上销售的产品进行了性能比较。在我们的实验条件下,最佳的热管真空钎焊工艺为:钎料成分为BAg44CuZn钎料,钎焊真空度为5×10-3Pa,真空钎焊功率为7.6 kW,钎焊间隙为0.08 mm。采用此工艺制作的热管其老化后的性能几乎不变,远优于市场上销售的热管,组装成热管式真空集热系统以后,其集热性能也比现有产品大为提高。In this paper, the effects of different process parameters on properties of heat pipes were analyzed. Then heat pipes and vacuum collector tubes with heat pipes were made under optimal conditions. The performance of our products was compared with which sold in the market. The results show that the best quality is obtained when using BAg44CuZn as solder, vacuum degree is 5xl0-3Pa; welding power is 7.6kW; welding distance is 0.08ram. The performance of the heat pipes we make is nearly unchanged after aging, which is far better than that sold in the market. The performance of heat-collecting system assembled with our heat pipes is also superior to that of products so!d in the market.

关 键 词：真空钎焊 热管式真空集热管 漏气率 集热系统 

分 类 号：TK172.4[动力工程及工程热物理—热能工程] TG113.263[金属学及工艺—物理冶金]