| BEPC-Ⅱ低温系统的氦气净化技术 |
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| 引用本文： | 李少鹏,何昆,桑民敬,刘亚萍,边琳,张桌,吕崇伟,葛锐.BEPC-Ⅱ低温系统的氦气净化技术[J].低温工程,2007(3):16-19,64. |
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| 作者姓名： | 李少鹏 何昆 桑民敬 刘亚萍 边琳 张桌 吕崇伟 葛锐 |
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| 作者单位： | 中国科学院高能物理研究所,北京,100049 |
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| 基金项目： | 北京市正负电子对撞机改造项目 |
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| 摘 要： | 氦气净化技术是国家大科学工程北京正负电子对撞机重大改造(BEPC-Ⅱ)中低温系统的关键技术之一.在充分调研国内外大型低温系统氦气净化技术的基础上,结合自身情况,创造性提出氦气储罐内部处理及真空置换方案,一次性充入氦气,将储罐内氦气不纯度控制在40 vpm之内,同时辅之以80 K外置低温吸附器对氦气储罐内以及冷箱和超导设备端的氦气进行净化.高效而又经济的解决了BEPC-Ⅱ低温系统中的氦气纯度问题,成功地进行了制冷机的验收测试和超导设备的调试及运行.
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| 关 键 词： | BEPC-Ⅱ 低温系统 真空置换 气体净化 |
| 文章编号： | 1000-6516（2007）03-0016-04 |
| 修稿时间： | 2007-01-232007-04-20 |
Technology of Helium gas purification in BEPC-Ⅱ cryogenic system |
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| Li Shaopeng,He Kun,Sang Minjing,Liu Yaping,Bian Lin,Zhang Zhuo,Lv Chongwei,Ge Rui.Technology of Helium gas purification in BEPC-Ⅱ cryogenic system[J].Cryogenics,2007(3):16-19,64. |
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| Authors: | Li Shaopeng He Kun Sang Minjing Liu Yaping Bian Lin Zhang Zhuo Lv Chongwei Ge Rui |
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| Affiliation: | Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 ,China |
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| Abstract: | Helium gas purification technology is one of the key technologies in the cryogenic system of Beijing Electron-Positron Collider Upgrade(BEPC-II).Based on fully investigate the helium gas purification technology of large scale cryogenic system home and abroad,put forward the project of inner treatment and vacuum displacement of tanks.According to the scheme,helium gas was filled into the tanks only once,and the purity of helium gas was controlled in 40 vpm.At the same time,80 K outer cryogenic adsorber was also used to purify the helium gas in tanks,cold boxes and superconducting devices.Now this technique has been fully used at the acceptance test of refrigerator and commissioning of superconducting devices. |
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