火炸药学报

针对恒温法爆热经典测量方法存在测量时间长、出现系统故障易导致测量失败等问题,提出一种基于故障前数据辨识爆热的解决方案。首先建立了基于炸药瞬态反应假设的量热计传热学方程,解算得到内桶水温的变化规律; 然后基于系统辨识的思想,给出了先辨识中间参数kNW/(cNmN)、u1、λ1、λ2,然后辨识目标参数TE(τM)、kNZ/cNmN、kNZ/cZmZ,再辨识修正温升与爆热的系统辨识方法,误差分析表明爆热的辨识值可稳健地收敛于经典值,氧化、燃烧等非瞬态反应对辨识精度的影响可忽略; 最后,针对8个典型炸药样本爆热测量数据进行模拟分析并提出收敛时刻的试验判据。模拟结果表明,爆热的辨识值可在不超过3%的相对误差、1/2主末期时间的条件下快速、可靠地收敛于经典值,试验判据能可靠地判断爆热辨识值的收敛时刻,有效降低了系统故障导致测量失败的风险。

In view of the problems of the classical measurement method of constant temperature explosion heat, such as long measurement time, system failure and so on, a solution of identifying explosion heat based on prefault data was proposed. Initially, the heat transfer equation of calorimeter based on the hypothesis of explosive transient response was established, and the change rule of water temperature in inner barrel was obtained after solving. Based on the thought of system identification, the system identification method was obtained, which firstly identifies the indirect parameters of kNW/(cNmN), u1, λ1, λ2, secondly identifies the target parameters of TE(τM), kNZ/cNmN, kNZ/cZmZ, thirdly identifies the correctional raising temperature and explosion heat. The error analysis shows that the identification value of explosion heat can converge to the classical value steadily, and the influence of non transient reaction such as oxidation and combustion on the identification accuracy can be ignored. Ultimately, 8 kinds of typical explosive samples were simulated and analyzed, and the criterion of convergence time was proposed. The simulation results show that the identification value of detonation heat can converge to the classical value quickly and reliably under the condition of less than 3% relative error and 1/2 of the main and final stage. The test criterion can judge the convergence time of the identification value of detonation heat reliably and effectively reduce the risk of measurement failure caused by system fault.

引言
1 爆热测量原理与算法
2 爆热计算的稳健辨识方法
3 试验仿真分析
4 结论

图1 量热计结构示意图<br/>Fig.1 Schematic diagram of calorimeter structure

图1 量热计结构示意图
Fig.1 Schematic diagram of calorimeter structure

图2 某次试验u1、λ1、λ2辨识值变化情况<br/>Fig.2 Change of identified value of u1, λ1, λ2 in an experiment

图2 某次试验u1、λ1、λ2辨识值变化情况
Fig.2 Change of identified value of u1, λ1, λ2 in an experiment

图3 某次试验δτ的变化情况<br/>Fig.3 Change of δτ in an experiment

图3 某次试验δτ的变化情况
Fig.3 Change of δτ in an experiment

图4 某次试验目标参数与修正温升变化情况<br/>Fig.4 Change of target parameters and modified temperature raise in an experiment

图4 某次试验目标参数与修正温升变化情况
Fig.4 Change of target parameters and modified temperature raise in an experiment

图5 内外桶实际温度及各阶段的拟合曲线<br/>Fig.5 Actual temperature of inner and outer barrels and fitting curve of each stage

图5 内外桶实际温度及各阶段的拟合曲线
Fig.5 Actual temperature of inner and outer barrels and fitting curve of each stage

图6 不同测量点辨识得到内桶水的理论与实际温升曲线的比较<br/>Fig.6 Comparison of the theoretical and practical temperature rise curves of the inner barrel water obtained from the identif ication of different measuring points

图6 不同测量点辨识得到内桶水的理论与实际温升曲线的比较
Fig.6 Comparison of the theoretical and practical temperature rise curves of the inner barrel water obtained from the identif ication of different measuring points

图7 爆热辨识值的收敛情况<br/>Fig.7 Convergence rule to identifying value of explosion heat

图7 爆热辨识值的收敛情况
Fig.7 Convergence rule to identifying value of explosion heat

图8 爆热辨识值相对误差上限水平的变化情况<br/>Fig.8 Change of UN of identified value of explosion heat

图8 爆热辨识值相对误差上限水平的变化情况
Fig.8 Change of UN of identified value of explosion heat

表1 典型测量时刻爆热辨识值及误差情况<br/>Table 1 Identified value and error of explosion heat in typical measuring time

表1 典型测量时刻爆热辨识值及误差情况
Table 1 Identified value and error of explosion heat in typical measuring time

表2 爆热辨识值的收敛特性<br/>Table 2 Convergence characteristics of identification value of explosion heat

表2 爆热辨识值的收敛特性
Table 2 Convergence characteristics of identification value of explosion heat

表3 3%相对误差上限水平时间点的搜索结果<br/>Table 3 Search result to the time of 3% upper limit level of relative error

表3 3%相对误差上限水平时间点的搜索结果
Table 3 Search result to the time of 3% upper limit level of relative error

[1] 王晓峰,冯晓军,肖奇.温压炸药爆炸能量的测量方法[J].火炸药学报,2013,36(2):9-12.

Chinese Journal of Explosives & Propellants(Huozhayao Xuebao)

[2]国防科学技术工业委员会. GJB 772.303-90炸药试验方法-爆热测定[S]. 1990.
[3]曹威,何中其,陈网桦,等.水下爆炸法测量含铝炸药后燃效应[J].含能材料, 2012, 20(2): 229-233.

Chinese Journal of Energetic Materials

[4]SAMUEL P H, RICARDO I. Predicting heats of explosion of nitrate esters through their NBO charges and 15N NMR chemical shifts on the nitro groups[J].Computational and Theoretical Chemistry, 2010(10):279-283.
[5]MOHAMMAD, HOSSEIN, KESHAVARZ. Quick estimation of heats of detonation of aromatic energetic compounds from structural parameters[J]. Journal of Hazardous Materials, 2006(9): 549-554.
[6]王建灵,李正来,王青枝.绝热式炸药爆热热量计绝热性能的测定方法[J]. 火炸药学报, 2007,30(2): 52 -58.

Chinese Jourmal of Explosives & Propellants(Huozhayao Xuebao)

[7]姜炯,贾丁海.BR-1型绝热式爆热测量系统的研究[J].矿冶工程,1984,9(4):4-8.

Mining and Metallurgical Engineering

[8]卢洪义,杨兴根.固体推进剂高精度爆热测试系统设计[J].自动化与仪器仪表,1999(8):35-37.

Automation & Instrumentation

[9]范荣桂.炸药爆热的恒温法测试研究[J].煤矿爆破,2001(4):9-11.

Coal Mine Blasting

[10]杨世铭, 陶文铨.传热学[M]. 北京:高等教育出版社, 2006.
[11]金朋刚, 郭炜, 任松涛, 等. TNT密闭环境中能量释放特性研究[J]. 爆破器材, 2013, 43(2):10-14.

Explosive Materials

备注

引言

1 爆热测量原理与算法

2 爆热计算的稳健辨识方法

3 试验仿真分析

4 结论

期刊信息

备注

引言

1 爆热测量原理与算法

2 爆热计算的稳健辨识方法

3 试验仿真分析

4 结 论

期刊信息

4 结论