动态燃烧过程参数测量原理与系统

为了满足动态燃烧试验对燃烧过程中燃烧放热量、温度、压力多参数动态测量的要求，研制了一套燃烧动态测试系统。首先从理论上分析了碳氢燃料燃烧时的化学反应过程与物理现象，采用光电传感技术，实现了对动态燃烧过程放热量的非接触式测量；其次运用动态理论详细研究了热电偶的动态特性，完善了用双丝频谱补偿法测量动态温度的方法；最后选择了合理的动态压力的测量方案。同时介绍了该系统的结构及工作特点、系统的动态联调结果等。试验表明了测试该系统具有所测参数多、工作性能稳定、动态响应快等特点，可广泛应用于动态与稳态燃烧试验研究或工业过程监控测量中

Development of a System for Measuring Dynamic Parameters in Combustion

In order to meet the requirements of dynamic measurements of release heat, temperature and pressure in the experimental research on combustion, a measurement system was developed. First, based on a theoretical analysis of the chemical reaction process and physical phenomena of the C nH m fuel combustion, a non contact dynamic measurement of release heat in the process of combustion was realized by using photo electric sensor technology. Second, according to the dynamic characteristics of the thermocouple obtained by author's detailed study, the measurement of dynamic temperature was perfected by using the principle of double thermocouple frequency spectrum compensation. Third, a practical way of measuring dynamic pressure was adopted. Last, the paper introduced the structure characteristics and calibration of the system. Test results show that the system contains the features of multiparameter measurements, stable characteristics and being quick in dynamic response, which makes it possible that the system can be widely applied to the experimental research on combustion and industrial process monitoring.