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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
In order to meet the requirement of dynamic measurement of combustion heat release, temperature and pressure in combustion process, a combustion dynamic test system was developed. First of all, the chemical reactions and physical phenomena during the combustion of hydrocarbon fuel were theoretically analyzed. The photoelectric sensing technology was used to realize the non-contact measurement of the exothermic quantity of the dynamic combustion process. Secondly, the dynamics of the thermocouple Characteristics, improve the double-wire spectral compensation method to measure the dynamic temperature; Finally, the choice of a reasonable measurement of dynamic pressure programs. At the same time introduced the structure of the system and work characteristics, the system dynamic combination of results. Experiments show that the system has many parameters tested, stable performance, fast dynamic response, etc. It can be widely used in dynamic and steady combustion test research or industrial process monitoring and measurement