HL-2M极向场线圈支撑结构分析评估  

Evaluation of the electromagnetic behavior of HL-2M poloidal field coils and the mechanical performance of the supporting structure

作　　者：张龙[1] 袁应龙[1] 蔡立君[1] 刘健[1] 卢勇[1] 刘雨祥 刘宽程 李云峰 HL-2M团队 ZHANG Long;YUAN Ying-long;CAI Li-jun;LIU Jian;LU Yong;LIU Yu-xiang;LIU Kuan-cheng;LI Yun-feng;HL-2M Development Team(Southwestern Institute of Physics,Chengdu 610041)

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》2021年第S01期402-408,共7页Nuclear Fusion and Plasma Physics

摘　　要：基于二维轴对称模型分析了极向场(TF)线圈在单零(SN)、双零(DN)、雪花(SF)和鼎位形下的电磁响应,并评估了4种位形极限工况下支撑的力学性能。分析表明,PF6线圈在放电初始时刻所受垂直电磁力最大,可达到1.9MN。在放电平顶结束时PF5线圈所受电磁力最大。在鼎位形下,PF5L电磁力可达2.6MN;雪花和双零位形下,可达到2.06MN。在这样极端的运行工况下,结构力学计算结果表明PF线圈支撑结构出现了局部塑性变形。采用ASMEVIII.2作为评判准则,对局部高应力区进行评估,评估表明结构不存在塑性塌陷和局部失效。而在上端主辐梁内侧支撑墩位置,螺栓所受轴力最大,需施加大于50kN的预紧力。Based on the two-dimensional axisymmetric model,the electromagnetic(EM)response of the PF coils at the discharge initial time,climbing phase,flat top and current drop phase under various plasma configuration is researched.At the same time,the mechanical performance under the extreme conditions is also evaluated.The study shows that at the discharge initial time,the vertical EM force of the PF6 coils is the largest and reaches 1.9MN.At the end of the discharge top phase,the vertical EM force of the PF5L coil is the largest and can be up to 2.6MN in the tripod configuration and 2.06MN in the snowflake and double null configurations.Under such extreme conditions,the structural mechanical evaluation of the support shows that it has the local plastic deformation.Using ASME VIII.2 as the criterion to evaluate the local high-stress area,the evaluation shows that there is no plastic collapse and local failure of the structure.In addition,the axial force of the bolt at the inner support near the upper main beam is the largest,and a pre-tightening force must be greater than 50kN.

关 键 词：HL-2M装置 极向场线圈 电磁力 力学性能 塑性变形 

分 类 号：TL622[核科学技术—核技术及应用]