Experimental study on transient high temperature measurement in explosive field
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摘要: 针对爆炸场瞬态高温测量需求，从辐射测温原理出发，建立红外比色测温系统。通过黑体炉实验标定出Si/Ge双通道比色测温仪的波长、带宽、光电转换系数等工作参数和测温范围，并将比色测温仪高温测温量程扩展至3 500℃。利用大能量电火花放电产生的爆炸场标定了测温仪的响应时间，结果显示测温仪响应时间不超过10μs。确定了标准测温仪和超限测温仪的温度计算公式，并将比色测温仪应用于TNT柱状炸药和云爆剂（FAE）爆炸场温度测试，可以为爆炸反应过程诊断和爆炸温度毁伤效应评估提供依据。Abstract: In order to meet the demands of transient high temperature measurement in explosive field, an infrared colorimetric temperature measurement system was established based on the theory of light radiation.The experiments with a blackbody furnace were carried out to calibrate the working parameters of the Si/Ge colorimetric pyrometer including wavelength, bandwidth, and photoelectric conversion coefficient, measurement range.And the upper limit of the colorimetric pyrometer reached 3 500℃.The response time of the colorimetric pyrometer was not more than 10μs, which was determined by calibration experiments using spark discharge.The temperature formulas were given for the standard and transfinite pyrometers.And the colorimetric pyrometer was applied to measure the real temperatures in TNT and FAE explosive fields.The outstanding features of the colorimetric pyrometer in the engineering applications indicate that the colorimetric pyrometer can be used to diagnose explosion processes and evaluate heat radiation damage effects.
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1. 爆炸场比色测温技术
2. 测温量程扩展
3. 比色测温系统实验标定
3.1 测温精度实验标定
3.2 响应速度实验标定
4. 比色测温仪在爆炸场中的应用
5. 结论
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图 1 爆炸场温度测试系统组成
Figure 1. Schematic of temperature measurement system for explosive field
图 3 标准测温仪和超限测温仪标定及校核结果对比
Figure 3. Comparison of calibrated results between standard and transfinite pyrometers
图 5 标准和超限测温仪测到的T-RT拟合曲线对比
Figure 5. Comparison of T-RT fitted curves between standard and transfinite pyrometers
图 6 电火花放电过程中测温仪电压信号响应曲线
Figure 6. Response curves of voltage signals during electric spark discharge process
图 7 爆炸场中测温仪输出电压响应曲线
Figure 7. Response curves of twin channel voltage signals in TNT explosive field
图 8 爆炸场温度响应曲线
Figure 8. Temperature response curve of colorimetric pyrometer in explosive field
表 1 测温仪参数标定结果
Table 1. Calibrated results of colorimetric pyrometers
仪器 kλ λ(a)/μm λ(b)/μm λ(c)/μm λB/μm Si通道 Ge通道 Si通道 Ge通道 Si通道 Ge通道 Si通道 Ge通道 Si通道 Ge通道 标准测温仪 0.041 0 0.029 9 0.592 2 1.098 3 1.081 9 1.753 5 0.837 1 1.426 0 0.489 6 0.655 4 超限测温仪 0.012 3 0.029 3 0.616 2 0.957 8 1.081 5 1.152 2 0.848 8 1.055 0 0.465 3 0.194 4 
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