摘要
根据中华人民共和国国务院令第500号《民用核安全设备监督管理条例》的指引精神,要保证民用核设施的安全运行,促进核能事业的顺利发展。现运营或在建核电厂,列装最多的设备是阀门,也是电站安全运营的重中之重。核电厂常用有动力驱动阀、自驱动止回阀、安全泄压阀与手动阀等。核电阀门是高频次、角动或往复运动密封形式,大多以柔性石墨模压填料进行核介质密封与防泄漏。本文在^(60)Coγ射线不同剂量辐射下柔性石墨材料和密封填料制品的机械-力学性能变化机制下,对比分析了核级石墨填料﹑抗氧化石墨填料﹑浸渍润滑剂石墨填料等密封制品以及柔性石墨材料在辐照之后的性能变化。其实验研究结果,发现了基于密封泄漏率优选不同的密封填料环及摩擦副配对的组合形式,采用抗磨自润滑改性技术可提升核电阀门密封可靠性,是杜绝核泄漏事故发生的关键措施。
In accordance with the guidance of the Regulations on Supervision and Administration of Civil Nuclear Safety Equipment(Order No. 500 of the State Council of the People’s Republic of China), the safe operation of civil nuclear facilities shall be ensured. In nuclear power plants, valve is of the top priority for safe operation of nuclear power plants, which is the most active equipment. Nuclear power valves have different functions and various types. In particular, there is a large amount of radiation in the medium transport in the nuclear island, and the accident of leakage is a catastrophic accident. Many nuclear valves are in high frequency, angular or reciprocating motion sealing form. The mechanical properties of flexible graphite and sealing filler under different radiation doses of^(60)Coγ-ray are studied, and compared with the technical parameters of various product sealing fillers, such as nuclear grade graphite material, antioxidant graphite material, and impregnation lubricant graphite material. Then, the comprehensive sealing performance is summarized, the packing sealing ring combination is optimized, the reliable sealing of nuclear valve is improved, so as to achieve the purpose of preventing accidents.
作者
耿艳春
谭桂斌
黄兴
耿青霖
GENG Yan-chun;TAN Gui-bin;HUANG Xing;GENG Qing-lin(Guangzhou Mechanical Engineering Research Institute Co.,Ltd.,Guangzhou,Guangdong Prov 510700,China;National Key Laboratory of Preision Eletronic Manufacturing Technology and Equipment Guangdong University of Technology Guangzhou Guangdong Prov.51006,China;Nanjing University of Science and Technology,Nanjing,Jiangsu Prov.210094,China)
出处
《中国核电》
2022年第4期600-606,共7页
China Nuclear Power
基金
广东省引进创新创业团队项目(编号:2019BT02Z393)
国家自然科学基金项目(编号:52105176)资助。
