剥离膜安装与空气动力学分析

陈佳鑫; 余洁冰; 康玲; 郑家煦; 王安鑫; 王广源; 聂小军

doi:10.11884/HPLPB201830.170114

剥离膜安装与空气动力学分析

doi: 10.11884/HPLPB201830.170114

陈佳鑫^{1, 2, ,},
余洁冰^{1, 2},
康玲^{1, 2},
郑家煦^{1, 2},
王安鑫^{1, 2},
王广源^{1, 2},
聂小军^{1, 2}

1.
中国科学院高能物理研究所, 北京 100049
2.
东莞中子科学中心, 广东东莞 523000

基金项目:

国家自然科学基金项目 11375217

详细信息

通讯作者:
陈佳鑫(1986—), 男，工程师，从事散裂中子源剥离膜系统研究; chenjx@ihep.ac.cn

中图分类号: TL503.3
计量
- 文章访问数: 1049
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- 被引次数: 0
出版历程
- 收稿日期: 2017-04-10
- 修回日期: 2017-08-26
- 刊出日期: 2018-02-15

Stripper foil installation and aerodynamics analysis

Chen Jiaxin^{1, 2
, ,},
Yu Jiebing^{1, 2},
Kang Ling^{1, 2},
Zheng Jiaxu^{1, 2},
Wang Anxin^{1, 2},
Wang Guangyuan^{1, 2},
Nie Xiaojun^{1, 2}

1.
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
2.
Dongguan Neutron Science Center, Dongguan 523000, China

摘要

摘要: 在散裂中子源注入系统工作过程中，剥离膜是实现负氢离子转换为质子注入加速的关键部件。百nm到μm级厚度的剥离膜超薄易碎，安装及系统真空获得难度较高，一直是散裂中子源研究的重点。对比了国外膜片固定方式现状，通过设计剥离膜辅助安装装置，实现剥离膜样品批量安装；通过Fluent仿真分析，模拟得出膜片在不同进出口压差下真空获得过程中的压力分布、膜片附件空气扰动及系统空气流动，制定在不破坏剥离膜的前提下真空获得方案，并获得剥离膜系统超高真空环境。
- 剥离膜 /
- 超薄膜片安装 /
- 动力学分析 /
- 超高真空获得 /
- 膜片保护
Abstract: In the operation process of spallation neutron source injection system, the stripper foil is the key equipment to realize the conversion of negative hydrogen ions into proton injection. The nanometer to micrometer thick stripper foil is ultra-thin and fragile, and its installation and system vacuum attainment are much difficult, which is the focus of spallation neutron source research. This paper compares the present situation of the foils fixation with that of the foreign foils. The pressure distribution of the foil, as well as the pressure distribution of the diaphragm under different pressure difference between inlet and outlet, air disturbance around the foil and the system air flow, has been simulated by Fluent simulation. Finally, this paper gives a vacuum solution without sacrificing the stripper foil, which has obtained an ultrahigh vacuum environment for the system.
- stripper foil /
- ultra-thin foil mounting /
- dynamic analysis /
- vacuum attainment /
- foil protection

HTML全文

图 1 SNS剥离膜固定方式

Figure 1. Fixation manner of stripper foil in SNS

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图 2 剥离膜破碎试验

Figure 2. Breaking experiment of CSNS stripper foil

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图 3 膜片交变温度场

Figure 3. Alternating temperature field of foil

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图 4 膜片双边固定形式示意图

Figure 4. Bilateral fixed form of stripper foil

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图 5 碳膜辅助安装装置及批量安装样品

Figure 5. Stripper foil installation set and the installation samples

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图 6 不同压差膜片最大应力应变分布图

Figure 6. Maximum stress and strain distribution under different pressure difference

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图 7 空气动力学分析残差曲线

Figure 7. Residual curves by aerodynamics analysis

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图 8 膜片压力分布情况

Figure 8. Pressure distribution of foil

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图 9 剥离膜系统空气流动分布图

Figure 9. Separation of airflow of stripper foil vacuum system

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图 10 剥离膜片空气扰动分布截面图

Figure 10. Distribution section of air disturbance around foil

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图 11 出口流速分布图

Figure 11. Export velocity distribution

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图 12 膜片应力应变分布图

Figure 12. Stress and strain distribution on foil

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图 13 真空获得过程中膜片的情况

Figure 13. Situation of foil during process of vacuum attainment

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图 14 系统检漏及极限真空度

Figure 14. System leak detection

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参考文献(6)

[1]	He Zhexi, Qiu Jing, Li Chunhua, et al. Wrinkle analysis and mounting optimization of the primary stripper foil for CSNS[J]. Chinese Physics C, 2013, 37: 107003. doi: 10.1088/1674-1137/37/10/107003
[2]	何哲玺, 李春华, 屈化民, 等. 中国散裂中子源快循环同步加速器主剥离膜设计[J]. 强激光与粒子束, 2012, 24(12): 2885-2888. doi: 10.3788/HPLPB20122412.2885 He Zhexi, Li Chunhua, Qu Huamin, et al. Design of primary stripper foil changer for CSNS/RCS. High Power Laser and Particle Beams, 2012, 24(12): 2885-2888 doi: 10.3788/HPLPB20122412.2885
[3]	何哲玺, 邱静, 李春华, 等. 中国散裂中子源主剥离膜热效应分析[J]. 原子能科学技术, 2013, 47(10): 1867-1871. https://www.cnki.com.cn/Article/CJFDTOTAL-YZJS201310036.htm He Zhexi, Qiu Jing, Li Chunhua, et al. Analysis of thermal effect for china spallation neutron source primary stripper foil. Atomic Energy Science and Technology, 2013, 47(10): 1867-1871 https://www.cnki.com.cn/Article/CJFDTOTAL-YZJS201310036.htm
[4]	何哲玺. 中国散裂中子源主剥离膜的设计与研制[D]. 北京: 中国科学院大学, 2013. He Zhexi. Design and development of the primary stripper foil device for CSNS. Beijing: University of Chinese Academy of Sciences, 2013
[5]	Takeda Y, Kinsho M, Kamiya J, et al. Exchange and observation systems for charge stripper foils at the J-PARC 3GeV RCS[J]. Nucl Instr Meth Phys Res A, 2008, 590: 213-220.
[6]	Takagi A, Sugai I, Takeda Y, et al. Comparative study on lifetimes of stripper foil using 650 keV H-ion beam[C]//Particle Accelerator Conference. 2007: 245-247.