高压水射流冲击HTPB推进剂的安全性分析

朱左明; 高鑫; 王煊军; 蒋大勇

doi:10.11883/1001-1455(2015)03-0366-07

高压水射流冲击HTPB推进剂的安全性分析

doi: 10.11883/1001-1455(2015)03-0366-07

朱左明^{1, 2},
高鑫¹,
王煊军^1, ,,
蒋大勇³

1.
第二炮兵工程大学, 陕西西安 710025
2.
第二炮兵装备研究院, 北京 100085
3.
武警工程大学, 陕西西安 710086

基金项目: 第二炮兵工程大学探索基金项目(XY2011JJB26)

详细信息

作者简介:
朱左明(1986—), 男, 博士

通讯作者:
王煊军, wxuanjun@sina.cn

中图分类号: O358
计量
- 文章访问数: 2975
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- PDF下载量: 519
- 被引次数: 0
出版历程
- 收稿日期: 2013-08-29
- 修回日期: 2013-12-19
- 刊出日期: 2015-05-25

Safety analysis of high-pressure waterjet impacting HTPB propellant

1.
The Second Artillery Engineering University, Xi'an 710025, Shaanxi, China
2.
The Second Artillery Equipment Academy, Beijing 100085, China
3.
Engineering University of CAPF, Xi'an 710086, Shaanxi, China

摘要

摘要: 以高压水射流冲击HTPB推进剂的动态加载过程和准静态加载过程在作用压力和持续时间上的巨大差异为基础, 在水锤压力和滞止压力计算的基础上分别进行了点火模式预判, 然后以模型类比和实验方法分析了动态和准静态加载过程的安全性。结果表明, 使用出口压力在300 MPa以内的高压水射流冲击HTPB推进剂装药在动态加载过程中不会有点火起爆危险性, 但使用100M Pa以上的高压水射流冲击HTPB推进剂装药在准静态加载过程中其内部可能会发生温度突跃情况, 这可能会引起热点火、甚至热起爆。
- 流体力学 /
- 冲击安全性 /
- 起爆模型 /
- HTPB推进剂 /
- 高压水射流
Abstract: Due to the huge differences in pressure and duration of dynamic loading process and quasistatic loading process in high-pressure water jet impacting HTPB propellant, possible ignition modes were prejudged on the basis of the calculation of water hammer pressure and stagnation pressure, and the safety of dynamic loading process and quasi-static loading process were analyzed through model analogy and experimental study respectively.The results show that there is no detonation risk in the dynamic loading process of high pressure water jet with the outlet pressure less than 300 MPa, but in the quasi-static loading process of high pressure water jet the outlet pressure of which is above 100 MPa.It is possible that internal temperature has a sudden rise, which may cause thermal ignition or even thermal explosion.
- fluid mechanics /
- impact safety /
- initiation model /
- HTPB propellant /
- waterjet

HTML全文

图 1 230 MPa水射流冲击HTPB推进剂表面的压力曲线

Figure 1. Pressure curve of HTPB propellant surface under 230 MPa waterjet impacting

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图 2 数控切割平台的组成与结构

Figure 2. Composition and structure of CNC cutting platform

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图 3 HTPB推进剂试样的DSC测试结果

Figure 3. DSC test result of HTPB propellant sample

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图 4 热电偶在HTPB推进剂样坯中的埋置点位示意图

Figure 4. Distribution diagram of thermocouples embedded in HTPB propellant

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图 5 高压水射流作用下HTPB推进剂内部的温升曲线

Figure 5. Temperature curve in HTPB propellant under the shock of high-pressure waterjet

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表 1 不同出口压力水平下的水锤压力

Table 1. Water hammer pressure under different outlet pressure levels

出口	p_j / MPa	v_j / (m·s^-1)	p_H / MPa
1	50	316	455
2	100	447	644
3	150	547	788
4	200	632	910
5	230	678	976
6	300	774	1 115

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表 2 不同出口压力下的温升突跃次数统计

Table 2. Temperature-jump frequency under different outlet pressure levels

p_j/MPa	N	n
50	10	0
80	12	0
100	15	0
120	15	1
150	15	1
180	15	3

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参考文献(9)

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