CT球管的热分析  

Thermal Analysis of CT Tubes

作　　者：蔺学聪 王瑞海[1] 龚海华[1] 吕向英[1] LIN Xue-cong;WANG Rui-hai;GONG Hai-hua;LV Xiang-ying(Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]北京真空电子技术研究所,北京100015

出　　处：《真空电子技术》2021年第3期36-40,共5页Vacuum Electronics

基　　金：科技部重点研发计划“低剂量数字减影血管造影(DSA)X-射线成像系统研制”项目(编号:2017YFC0109102);北京市科技计划“医药创新品种研发培育及产业支撑平台能力建设”项目(编号:Z191100007619031)。

摘　　要：本文主要对CT球管的阳极与管壳的热分布进行研究。通过建立三维模型与定义热边界条件,对CT球管中高温热源的传热机理进行瞬态热仿真分析,结合打靶除气过程中的温度试验,监测阳极与管壳的传热情况,并与仿真互相验证,进而确定合理的打靶除气工艺参数,有效改善CT球管的使用寿命。Thermal distribution of anode and shell of CT tubes was studied.3D models were established,thermal boundary conditions were defined,and the transient thermal simulation analysis of the heat transfer mechanism of high temperature heat source in CT tubes was carried out.With the temperature experiment in bombarding target and degassing process,the heat transfer between anode and shell was monitored and compared with the simulation result.Reasonable parameters of bombarding target and degassing process were obtained,which effectively improved the service life of CT tubes.

关 键 词：CT球管 阳极 瞬态热仿真 温度试验 

分 类 号：TN14[电子电信—物理电子学]