北京正负电子对撞机重大改造低温传输管线支撑数值模拟  

Numerical simulation of the supports of cryogenic transfer lines in Beijing Electron-Positron Collider Upgrade

作　　者：王莉[1] 汤洪明[1] 张小斌[1] 刘孝坤[1] 刘崇山[1] 贾林祥 

机构地区：[1]哈尔滨工业大学低温与超导技术研究所,哈尔滨150001 [2]美国布尔海文国家实验室,纽约ny11973

出　　处：《低温工程》2006年第2期35-40,49,共7页Cryogenics

基　　金：BEPCⅡ重大改造项目低温系统工程设计(EDQQ25500317)资助

摘　　要：低温传输管线是北京正负电子对撞机重大升级改造(BEPCⅡ)中低温系统的关键设备之一。为了确保BEPCⅡ低温传输管线的设计质量,运用有限元软件包ANSYS对低温传输管线的支撑进行了热负荷的数值模拟,得到传输管线的漏热和支撑温度分布。设计了一种特殊的支撑结构来支撑多通道传输管线垂直段重量,并对该支撑进行了热和应力的数值模拟。最后确定了漏热、强度满足工程要求且结构设计简单的低温传输管线支撑方案,目前该支撑方案已经运用到实际传输管线的加工、制造中。The cryogenic transfer lines are main facilities in the cryogenic system of Beijing Electron- Positron Collider Upgrade （BEPC Ⅱ ）. In order to guarantee the good quality of transfer lines, the numerical thermal simulation of the supports of cryogenic transfer lines were made by FEA package ANSYS by which the heat leak and temperature distribution on the supports of transfer lines were obtained. In addition, a special support structure was designed to support the weight of the vertical part of multiple-tube transfer lines, and the simulations of heat load and stress were also performed for this support. Finally, the supports schemes of transfer lines were proposed, taking heat leak, strength as well as the simple structure into account. The supports schemes have been applied in the manufacture of the cryogenic transfer lines in BEPCⅡ.

关 键 词：UBEPCⅡ 低温传输管线 支撑 漏热 应力 

分 类 号：TB611[一般工业技术—制冷工程] TB658