基于环境因子的火炮膛压测试仪校准装置

Calibration Apparatus for Artillery Chamber Pressure Test Device Based on Environmental Factors

针对现有模拟膛压校准装置存在的结构复杂、操作不便及压力量程小等缺点,对现有装置进行了改进,建立了校准系统。校准系统由模拟膛压校准装置、标准检测系统及高低温实验箱组成,采用环境因子校准方法,可对火炮膛压测试仪实施校准。改进后的校准装置能模拟火炮膛内高温高压环境,产生的压力信号幅值在80～800MPa,脉宽在10～20ms,上升时间小于2ms。理论分析与对比试验结果表明:火炮膛压测试仪在模拟应用环境下校准的方法是合理的,静态标定方法和模拟应用环境校准方法获得的测压器灵敏度系数不同,实炮测试数据表明经模拟应用环境校准后的测压器测试数据稳定性好,置信度高。

In order to overcome the disadvantage of the simulation chamber calibration apparatus, such as complex structure, inconvenience and pressure range is too small, we improved the existing apparatus and established a new cali- bration system. The calibration system consisted of simulation chamber calibration apparatus, standard testing system, high and low temperature test equipment. The artillery chamber pressure testing device could be calibrated by adopting environmental factors. The improved calibration apparatus could simulate the environment of high temperature and high pressure in gun chamber, the amplitude of the pressure signal generated by the apparatus was between 80 ~ 800 MPa, the pulse width of the pressure signal was between 10-20 ms, the rising time was less than 2 ms. Theory analysis and contrast test results showed that the calibration method for simulating application environment of it was reasonable The sensitivity coefficients obtained by static calibration and calibration of simulation application environment were different. The practical firing results showed that the data from the testing device after simulation environment calibration had better stability and high confidence level.