弹尾弹射装置间隙密封的火药气体动力学

马慧明; 张亚; 李世中

doi:10.11883/1001-1455(2017)05-0976-07

弹尾弹射装置间隙密封的火药气体动力学

doi: 10.11883/1001-1455(2017)05-0976-07

马慧明^{1, 2},
张亚^1, ,,
李世中¹

1.
中北大学机电工程学院，山西太原 030051
2.
中北大学信息与通信工程学院，山西太原 030051

详细信息

作者简介:
马慧明(1978—)，男，博士研究生，讲师

通讯作者:
张亚，zhangya@nuc.edu.cn

中图分类号: O382;TJ430.6⁺6
计量
- 文章访问数: 4168
- HTML全文浏览量: 1206
- PDF下载量: 323
- 被引次数: 0
出版历程
- 收稿日期: 2016-06-14
- 修回日期: 2016-10-26
- 刊出日期: 2017-09-25

Gas dynamics of gunpowder for clearance seal of ejection device in projectile base

Ma Huiming^{1, 2},
Zhang Ya^{1
, ,},
Li Shizhong¹

1.
School of Mechatronic Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
School of Information and Communication Engineering, North University of China, Taiyuan 030051, Shanxi, China

摘要

摘要: 针对弹尾开孔安装用于侵彻数据回收的弹射装置后，存在的弹射间隙会使弹体内的测试装置受到火药气体侵蚀破坏的问题，设计了间隙密封结构，对流经间隙的火药气体进行了气体动力学的建模分析，并对密封结构进行了膛压和密封空腔压强测试。结果表明：火药燃烧产生的气体为可压缩性气体，在药室和收缩的间隙通道中为亚声速流动状态，而在扩张的密封空腔中为超声速流动状态；在弹底火药气体温度为2 166.5 K、密度为360 kg/m³、压强为242.9 MPa的条件下，经过密封装置的密封后，密封空腔内的残余气体压强为0.49 MPa。试验所得密封空腔内的最大压强为0.18 MPa，与模型计算结果基本吻合。
- 弹尾 /
- 火药气体 /
- 气流参数 /
- 气体动力学 /
- 间隙密封 /
- 迷宫密封 /
- 密封圈
Abstract: The present study addresses the potential damage that might be suffered by the test device of a projectile body as a result of the gun powder gas coming from the clearance opened in the projection base for installing an ejection device for the recovery of the penetration data. A seal structure of the clearance was designed and a model was built for analyzing the dynamical state of the gunpowder gas flowing in the clearance. The chamber pressure and the seal cavity pressure of the seal structure were tested by experiment. The results show that the gas in the gunpowder combustion was a compressible gas, flowing in a subsonic condition in the powder chamber and the contracting clearance channel, but in a supersonic condition in the expansion seal cavity. When the gunpowder gas in the projection base was sealed by the seal structure and kept at a temperature of 2 166.5 K, a density of 360 kg/m³ and a pressure of 242.9 MPa, the pressure for the residual gas in the seal cavity was 0.49 MPa. The maximum pressure of the test curve in the seal cavity pressure was 0.18 MPa, fairly consistent with the theoretical results. These results can serve as reference for fabricating the seal of the high temperature and high pressure gunpowder gas in the projection base.
- projection base /
- gunpowder gas /
- flow parameter /
- gas dynamics /
- clearance seal /
- labyrinth seal /
- seal ring

HTML全文

图 1 间隙密封结构

Figure 1. Clearance seal structure

下载: 全尺寸图片幻灯片

图 2 理论计算的各通道压强曲线

Figure 2. Theoretical pressure in all passages

下载: 全尺寸图片幻灯片

图 3 设置密封圈后的通道压强曲线

Figure 3. Pressure in partial passage after setting seal rings

下载: 全尺寸图片幻灯片

图 4 密封试验装置

Figure 4. Seal device for test

下载: 全尺寸图片幻灯片

图 5 试验装置结构示意

Figure 5. Sketch map of test device

下载: 全尺寸图片幻灯片

图 6 膛压和密封空腔压强测试曲线

Figure 6. Test curves of chamber pressure and seal cavity pressure

下载: 全尺寸图片幻灯片

参考文献(22)

[1]	王茂林, 黄强, 张国平, 等.衬套径向间隙部位火药气体压力计算[J].火炮发射与控制学报, 2009, 30(3):49-52. doi: 10.3969/j.issn.1673-6524.2009.03.013 Wang Maolin, Huang Qiang, Zhang Guoping, et al. Pressure calculation of powder gas in bush radial clearance[J]. Journal of Gun Launch and Control, 2009, 30(3):49-52. doi: 10.3969/j.issn.1673-6524.2009.03.013
[2]	张浩, 周彦煌.一种瞬态高压条件下的密封设计[J].润滑与密封, 2006, 31(5):132-134. doi: 10.3969/j.issn.0254-0150.2006.05.043 Zhang Hao, Zhou Yanhuang. A seal design under transient high pressure condition[J]. Lubrication Engineering, 2006, 31(5):132-134. doi: 10.3969/j.issn.0254-0150.2006.05.043
[3]	张浩, 陆欣, 余永刚, 等.某口径埋头弹火炮的密封与装药设计[J].兵工学报, 2006, 27(4):630-633. doi: 10.3321/j.issn:1000-1093.2006.04.012 Zhang Hao, Lu Xin, Yu Yonggang, et al. Design for the seal system and charge of a CAT gun[J]. Acta Armamentarii, 2006, 27(4):630-633. doi: 10.3321/j.issn:1000-1093.2006.04.012
[4]	张讯, 张相炎.新型组合式炮膛密封结构仿真研究[J].弹道学报, 2009, 21(1):63-66. http://d.old.wanfangdata.com.cn/Periodical/ddxb200901016 Zhang Xun, Zhang Xiangyan. Simulation research on new combined barrel seal structure[J]. Journal of Ballistics, 2009, 21(1):63-66. http://d.old.wanfangdata.com.cn/Periodical/ddxb200901016
[5]	Fu Qiang, Chen Longmiao, Qian Linfang, et al. Optimum design for seal structure of a new-type artillery based on MOGA-Ⅱ and RSM[C]//Proceedings of the 4th International Conference on Mechanical Engineering and Mechanics. Suzhou, 2011: 164-168.
[6]	赵威, 何永, 陶齐冈, 等.一种高压试验装置增压密封结构设计及仿真[J].兵工自动化, 2013, 32(11):57-59. doi: 10.7690/bgzdh.2013.11.015 Zhao Wei, He Yong, Tao Qigang, et al. Design and simulation for supercharged sealing structure of high voltage test device[J]. Ordnance Industry Automation, 2013, 32(11):57-59. doi: 10.7690/bgzdh.2013.11.015
[7]	陈伟, 张敬兵, 陈瑶, 等.一种新型试验装置密封结构仿真研究[J].机械制造与自动化, 2014, 43(5):23 -25, 29. doi: 10.3969/j.issn.1671-5276.2014.05.010 Chen Wei, Zhang Jingbing, Chen Yao, et al. Simulation research on new seal structure of test device[J]. Machine Building and Automation, 2014, 43(5):23 -25, 29. doi: 10.3969/j.issn.1671-5276.2014.05.010
[8]	崔凯波, 秦俊奇, 狄长春, 等.变化油压冲击下火炮制退机唇形密封圈的动密封性能[J].润滑与密封, 2014, 39(8):24-30. doi: 10.3969/j.issn.0254-0150.2014.08.005 Cui Kaibo, Qin Junqi, Di Changchun, et al. Dynamic seal performance of lip ring of artillery recoil mechanism under changeable hydraulic impact[J]. Lubrication Engineering, 2014, 39(8):24-30. doi: 10.3969/j.issn.0254-0150.2014.08.005
[9]	景思睿, 张鸣远.流体力学[M].西安:西安交通大学出版社, 2001:6-9.
[10]	张兆顺, 崔桂香.流体力学[M].2版.北京:清华大学出版社, 2006:8-10.
[11]	孔珑.工程流体力学[M].4版.北京:中国电力出版社, 2014:151-174.
[12]	张连玉, 汪令羽, 苗瑞生.爆炸气体动力学基础[M].北京:北京工业学院出版社, 1987:104-129.
[13]	王保国, 刘淑艳, 黄伟光.气体动力学[M].北京:北京理工大学出版社, 2005:170-184.
[14]	韩占忠, 王敬, 兰小平.FLUENT:流体工程仿真计算实例与应用[M].北京:北京理工大学出版社, 2013:84-91.
[15]	黄守龙, 陆家鹏, 徐诚.直通式迷宫瞬态压力特性的实验研究[J].弹道学报, 1994, 6(4):7-11. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400029597 Huang Shoulong, Lu Jiapeng, Xu Cheng. Experimental study on transient features for straight-through labyrinth[J]. Journal of Ballistics, 1994, 6(4):7-11. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=QK199400029597
[16]	塔鲁达纳夫斯基.非接触密封: 间隙密封与迷宫密封的原理和应用[M].李均卿, 刁元康, 译.北京: 机械工业出版社, 1986: 77-95.
[17]	吴晓铃, 袁丽娟.密封设计入门[M].北京:化学工业出版社, 2013:56-74.
[18]	陆家鹏, 谭兴良, 雷志义.自动武器气体动力学[M].北京:兵器工业出版社, 1991:83-84.
[19]	Pérez-Ràfols F, Larsson R, Almqvist A. Modelling of leakage on metal-to-metal seals[J]. Tribology International, 2016, 94:421-427. doi: 10.1016/j.triboint.2015.10.003
[20]	蔡仁良.流体密封技术:原理与工程应用[M].北京:化学工业出版社, 2013:65-77.
[21]	Kima G H, Leeb Y S, Yanga H L. A new design concept of metal O-ring seal for long-term performance[J]. Vacuum, 2016, 123:54-61. doi: 10.1016/j.vacuum.2015.10.014
[22]	崔建昆.密封设计与实用数据速查[M].北京:机械工业出版社, 2010:135-165.