电磁发射装置轨道热管理冷却管道的力学设计

林灵淑; 袁伟群; 赵莹; 王志增; 严萍

doi:10.11884/HPLPB201830.170322

电磁发射装置轨道热管理冷却管道的力学设计

doi: 10.11884/HPLPB201830.170322

林灵淑^{1, 2,},
袁伟群²,
赵莹²,
王志增²,
严萍^{2, 3, ,}

1.
中国科学院大学, 北京 100190
2.
中国科学院电工研究所, 北京 100190
3.
中国科学院电力电子与电力驱动重点实验室, 北京 100190

基金项目:

国家自然科学基金项目 51237007

国家自然科学基金项目 51207178

详细信息

作者简介:
林灵淑(1991—)，女，博士研究生，主要从事脉冲功率技术的研究；linlingshu13@mail.iee.ac.cn

通讯作者:
严萍(1966—)，女，博士，研究员，主要从事高电压绝缘技术和脉冲大电流放电技术的研究；pingyan@mail.iee.ac.cn

中图分类号: TM89
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- 被引次数: 0
出版历程
- 收稿日期: 2017-08-25
- 修回日期: 2017-10-23
- 刊出日期: 2018-02-15

Mechanical design of rail cooling pipe for electromagnetic launcher

Lin Lingshu^{1, 2
,},
Yuan Weiqun²,
Zhao Ying²,
Wang Zhizeng²,
Yan Ping^{2, 3
, ,}

1.
University of Chinese Academy of Sciences, Beijing 100190, China
2.
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
3.
Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences, Beijing 100190, China

摘要

摘要: 为了解决电磁轨道发射器在实际应用中遇到的高热量积累问题，需要对轨道进行冷却。基于多物理场耦合仿真平台Comsol Multiphysics，从轨道结构特性和电气特性两个方面进行分析，提出了在轨道内部设置冷却管道的基本规律。建立发射器的电磁场和结构场耦合模型，利用有限元法对预紧力和电动力作用下的轨道响应进行数值计算。仿真结果表明，设置冷却管道会对轨道造成材料损失，进而影响轨道性能，冷却管道应当尽可能远离肩部与枢-轨接触面连接处，并提出了冷却管道位于轨道不同位置时，轨道的形变规律和电感梯度变化规律，为轨道热管理冷却管道的设置方案提供了理论依据。
- 电磁发射 /
- 热管理 /
- 轨道冷却 /
- 电感梯度 /
- 形变
Abstract: In order to solve the high quantity of heat accumulation problems of the electromagnetic rail launcher, the rail cooling is necessary. This paper presents the basic principles for setting cooling pipes inside the rail from two aspects of mechanical performance and electrical performance analysis.An electromagnetic field and structure field model is established, the finite element method is used for numerical calculation of rail's response to the pre-tightening force and the eletromagnetic force. Simulation results show that, the cooling pipe will cause material damage, which has negative influence on rail performance; the cooling pipe should be set as far as possible away from the shoulder and armature-rail interface connection. This paper also puts forward the laws of rail deformation and inductance gradient with cooling pipe in different locations.
- electromagnetic launcher /
- thermal management /
- rail cooling /
- inductance gradient /
- deformation

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图 1 发射器及冷却管道基本结构

Figure 1. Basic structure of EML launcher and cooling pipes

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图 2 预紧状态下的轨道应力分布

Figure 2. Preload von Mises stress in rail

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图 3 轨道横截面2D电磁场计算

Figure 3. Electromagnetic field calculation

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图 4 轨道横截面电磁力分布

Figure 4. Electromagnetic force distribution in rails cross section

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图 5 预紧力和电磁力共同作用下的轨道横截面应力分布

Figure 5. Von Mises stress in the rail under preload and electromagnetic force

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图 6 管道位于不同位置时的轨道形变

Figure 6. Displacement of rail with pipe

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图 7 轨道横截面电流密度

Figure 7. Rail current density

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图 8 管道位于不同位置时的轨道电感梯度

Figure 8. Inductance gradient of rail with pipe

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表 1 各材料力学性能参数

Table 1. Mechanical properties parameters of materials

	ρ/(kg·m^-3)	Young’s modulus/Pa	Poisson’s ratio
rail	8890	1.10×10¹¹	0.35
bolt	7850	2.06×10¹¹	0.30
insulation	1420	1.40×10¹⁰	0.33
steel bar	8000	1.93×10¹¹	0.29

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表 2 仿真模型中轨道材料属性

Table 2. Rail material properties of simulation model

material	μ_r	σ/(S·m^-1)	ρ/(kg·m^-3)
C18200	1	4.63×10⁷	8890

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