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介绍了航空发动机燃烧室温度场测量所用的燃气取样器和燃气分析系统,并对系统简化所引起的误差进行了分析.阐述了“点”燃烧温度的计算方法以及利用“点”燃烧效率、油气比和燃烧温度计算总平均值的方法.数据显示利用热电偶测量温度获得的燃烧效率比燃气分析法燃烧效率约低4%,在燃气温度约为1 500℃时,热电偶测得的燃气平均温度比燃气分析法平均温度低55℃左右,同时表明燃气分析方法在测量航空发动机燃烧室温度场具有可测温度高、影响因素少、数据准确的优势.
This paper introduces the gas sampler and gas analysis system used in the measurement of the temperature field of the aeroengine combustion chamber, and analyzes the errors caused by the system simplification.The paper expounds the calculation method of “point” combustion temperature and the use of “point” Combustion efficiency, gas-oil ratio, and combustion temperature.The data show that the combustion efficiency measured with a thermocouple is about 4% lower than the combustion efficiency of a gas analysis method, and at a gas temperature of about 1,500 ° C, the thermocouple The mean gas temperature obtained is about 55 ℃ lower than the average temperature of the gas analysis method. It also shows that the gas analysis method has the advantages of high measurable temperature, less influencing factors and accurate data in measuring the temperature field of the aeroengine.