宽带大功率螺旋线行波管慢波组件散热性能技术研究  

Research on Heat-Dissipation Performance for Slow-Wave System of High-Power Broadband Helix TWT

作　　者：王月芳 邱立[1] 张磊 赵长江 WANG Yue-fang;QIU Li;ZHANG Lei;ZHAO Chang-jiang(Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第十二研究所,北京100015

出　　处：《真空电子技术》2020年第5期76-80,共5页Vacuum Electronics

摘　　要：本文针对宽带大功率螺旋线行波管输出功率下降、输出天线断开等现象进行分析,通过CST仿真软件,对比了传统输出天线焊接结构和几种新型焊接结构,给出最优型结构,该结构缓解输出天线的焊接应力,解决大功率行波管输出天线焊接后易断裂的问题。为提升大功率行波管功率容量,本文通过采用传统热膨胀夹持工艺和夹持杆焊接工艺相结合,将螺旋线、夹持杆和管壳三者焊接,提高慢波组件的散热能力。通过ANSYS仿真软件和实际制管验证,试验结果表明,行波管输出功率提高了20%,且能够长期稳定工作。本文研究方法解决了困扰宽带大功率行波管输出天线易断裂的问题,实现行波管的功率提升,提高宽带大功率行波管的热稳定性。Output power decrease and output antenna disconnection of high-power broadband helix TWTs are analyzed.Through CST simulation,the traditional output antenna welding structure and several new welding structures are compared and the optimal structure is given.The optimal structure relieves the welding stress of output antenna,which can solve the problem that the output antenna of high-power TWT is easy to break after welding process.In order to improve the heat dissipation capacity of the slow-wave systems,traditional thermal expansion clamping technology and support rod welding technology are adopted to weld the helix,the clamping rod and the shell together.The ANSYS simulation and test results show that the output power of the TWT with new technology is increased by 20%and it can work stably for a long time.The research solves the problem that the output antenna is easy to break,improves the output power and thermal stability of high-power broadband TWTs.

关 键 词：散热性能 输出天线焊接 夹持杆焊接 

分 类 号：TN124[电子电信—物理电子学]