旋入式铜柱测压器性能鉴定方法研究

Research on performance evaluation method of rotary crusher gauge

膛压是各类武器性能鉴定必测的参数,铜柱测压法是膛压测量的重要方法,铜柱测压器的性能好坏直接影响了膛压测量的精度。目前铜柱测压器的性能鉴定主要采用人工检查方法,存在人为因素影响大、检查结果无法量化、检查不准确等问题。为解决这一问题,文章以小口径武器使用的旋入式铜柱测压器为研究对象,根据测压器工作数学模型进行分析,得出测压器性能的关键指标为活塞气密性和活动性,研制专用的测压器性能鉴定装置,建立测压器活塞气密性和活动性的量化数学模型和测试流程,提出量化测量方法和评估方法。以20支旋入式铜柱测压器进行实际性能鉴定实验,实验分别采用人工检查方法和鉴定装置测量方法,并采用落锤式压力发生器进行动态实验验证。结果表明:人工检查结果与动态实验结果差别较大,而鉴定装置测量结果与动态实验一致,说明该方法能够准确鉴定测压器的性能。最后结合实验结果得出了在规定膛压测量精度下的活塞气密性和活动性指标范围要求。

Chamber pressure is a necessary parameter for performance evaluation of various weapons.Copper column pressure measurement method is an important method for chamber pressure measurement.The performance of copper column crusher gauge directly affects the accuracy of chamber pressure measurement.At present,the performance appraisal of copper column manometer mainly adopts manual inspection method,which has some problems,such as great influence of human factors,unquantifiable inspection results,and inaccurate inspection.In order to solve these problems,this paper takes the screw in copper column manometer used in small caliber weapons as the research object,analyzes it according to the working mathematical model of the manometer,obtains that the key indexes of the performance of the manometer are piston air tightness and activity,develops a special manometer performance evaluation device,and establishes the quantitative mathematical model and test process of piston air tightness and activity of the manometer.The quantitative measurement method and evaluation method are proposed.The actual performance appraisal experiment is carried out with 20 screws in copper column manometers.The experiment adopts manual inspection method and appraisal device measurement method respectively,and the dynamic experiment is verified by drop hammer pressure generator.The results show that the manual inspection and evaluation results are inconsistent with the dynamic experiment results,while the measurement and evaluation results of the evaluation device are consistent with the dynamic experiment,which shows that this method can accurately evaluate the performance of the crusher gauge.Combined with the experimental results,the requirements of piston air tightness and activity indexes under the specified bore pressure measurement accuracy are obtained.