电气化铁路隧道微波防结冰技术研究与应用
Research and Application of Microwave Anti-icing Technology for Electrified Railway Tunnel
  
DOI:
中文关键词:  微波, 防结冰装置, 吸波涂料, 智能化, 电气化铁路隧道
英文关键词:microwave,anti-icing device,microwave absorbing materials,intelligent,electrified railway tunnel
基金项目:国家自然科学基金(61771407)
作者单位
李 喆1 钟选明2马劲飞3 1. 神华集团朔黄铁路发展有限责任公司,肃宁062350
2. 西南交通大学电磁场与微波技术研究所,成都610031
3. 中国铁路总公司发展和改革部,北京100844 
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中文摘要:
      提出利用2. 45 GHz 微波,通过非接触式加热方式,实现电气化铁路隧道防结冰的新方法,研究了智能微波防结冰装置。装置由微波源、发射天线、监测控制系统三部分组成,通过微波照射隧道接触网悬挂上方渗水区混凝土,混凝土吸收微波,将微波能转化成热能,使得渗水区温度升高,防止渗水凝结成冰或融化已凝结的冰柱。对渗水区混凝土喷涂吸波涂料以提高吸收效率,降低天线发射功率。仿真计算与实验结果均表明:微波致热实现铁路隧道防结冰是可行的,喷涂1 mm 厚的吸波涂料能够提高温升至原来的2 倍左右。
英文摘要:
      A novel anti-icing approach, which utilizes non-contact heating mode based on 2. 45GHz microwave, is presented for electrified railway tunnels in the paper. The intelligent microwave anti-icing device is also studied, which consists of microwave source, transmitting antenna and monitoring and control system. By transmitting microwaves to the damp concretes which are at the top of the overhead contact line, the concretes absorb the microwaves and transform them into heat energy. It will make the temperature of the concretes rise and prevent the water from freezing or melt the icicles. In order to improve the absorption efficiency and reduce the transmitting power of the antenna, the absorbing materials are introduced to spray on the damp concretes. Both simulation and experimental results show that it is feasible to realize anti icing of the electrified railway tunnels by microwave heating, and the microwave absorbing materials of 1mm thickness can improve the heating efficiency by about 2 times of the original.
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