摘要
根据真空室冷屏所处位置和设计条件要求,选择304LN不锈钢作为冷屏的制作材料,在环向上把真空室冷屏分为16个扇区,每个扇区由12个子部分组成,在冷屏面板扇区的子部分上合理布置相应的冷却管回路,并选择高压液氦作为冷却剂。为减少热流密度、降低冷屏辐射发射率,在冷屏表面涂有5μm厚的银层。根据辐射热原理,利用CFX软件对真空室冷屏结构进行热分析,得到其面板的温度分布及冷却管道回路的进出口压力差,分析表明,在允许范围内验证了该冷却管道布局的合理性。
According to the location and design requirements of VVTS(Vacuum vessel thermal shield),304 LN stainless steel was selected as the material of the VVTS.The VVTS was divided into 16 sectors in the annular direction.Each sector was composed of 12 sub-sectors.The corresponding cooling pipe circuit was reasonably arranged on the sub-sectors of VVTS panel,and high-pressure liquid helium was selected as the coolant.In order to reduce the heat flux and increase the radiation emissivity of VVTS,5μm thick silver coatings were coated on the surface of the cold shield.According to the radiation heat principle of VVTS,the structure of VVTS was analyzed by using CFX.The temperature distribution of VVTS panel and the pressure difference between the inlet and outlet of the cooling pipeline circuit were obtained.The analysis shows that the temperature difference between the inlet and outlet of the cooling pipeline is within the allowable range,which verifies the rationality of the layout of the cooling pipeline.
作者
王开松
白玉成
葛剑
Wang Kaisong;Bai Yucheng;Ge Jian(School of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232001,China;Institute of Plasma Physics,Chinese Academy of Science,Hefei 230031,China)
出处
《低温与超导》
CAS
北大核心
2019年第10期6-10,共5页
Cryogenics and Superconductivity
基金
国家重点研发计划项目(2017YFE0300503)
