吸波材料对铁路隧道微波防冰效率的影响研究  

Research on Anti-icing Efficiency of Absorbing Materials in Railway Tunnels

作　　者：李军野 钟选明[1] 廖成[1] 王永亮[1] 冯菊[1] 

机构地区：[1]西南交通大学电磁场与电磁波技术研究所,成都610031

出　　处：《真空电子技术》2017年第4期25-29,共5页Vacuum Electronics

基　　金：国家973计划资助项目(2013CB328904);中央高校基本科研业务专项资金(2682015CX06)

摘　　要：传统的隧道除冰方式主要依赖人工打冰,常需要关闭接触网供电来保证安全。而微波防冰装置可以安置在隧道两侧的墙壁上,可与接触网保持足够的安全距离。为了提高隧道顶部对微波的吸收效率,在隧道壁表面喷涂一层吸波材料,既减小了对微波的反射系数,又增加表层介质对微波的吸收能力。仿真结果表明,在入射角处于0°至70°的范围内,涂有1mm厚的吸波材料可以使隧道表面对TEy波的反射系数平均降低1.78dB,并且随着吸波材料的厚度增加,反射系数先减小后增加,吸收的微波能逐渐增加。Traditional tunnel de-icing relies on manual labor.In that case the catenary power supply should be turned off to ensure safety.Microwave anti-icing devices can be placed on the walls of the tunnel,keeping a safety distance from the catenary.In order to improve microwave absorption efficiency,absorbing materials are coated on tunnel wall surface.The absorbing materials can reduce the microwave reflection coefficient and increase the microwave absorption ability of the surface.The simulation results show that,for a TEy wave with an incidence angle of 0~70°,the absorbing materials with a thickness of 1 mm can reduce the reflection coefficient of the tunnel surface by 1.78 dB on average.Moreover,with the thickness of absorbing material increasing,the reflection coefficient decreases first and then increases,and the microwave energy absorbed gradually increases.

关 键 词：微波加热 吸波材料 防冰 铁路隧道 

分 类 号：TM924.76[电气工程—电力电子与电力传动]