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介绍了测量燃气涡轮发动机主燃烧室燃烧效率、气态污染物排放的燃气分析系统,从取样、摆动测量方式、过程温度控制、仪器测量4方面分析了燃烧效率、气态污染物的误差.结果表明:采用混合式取样器以摆动测量方式得到的燃烧效率误差在0.21%以内,余气系数的误差在1.11%以内,气态污染物误差在2.24%以内.此外还对燃烧室不同工况下的燃烧效率和污染物组分体积分数分布进行了统计分析,确认了除较高油气比状态的燃烧效率分布较为均匀,可适当减少取样点数量外,足够的取样点数量是保证燃气分析测试结果准确性的必要条件.
The gas analysis system for measuring the combustion efficiency and the discharge of gaseous pollutants in the main combustion chamber of a gas turbine engine is introduced, and the errors of combustion efficiency and gaseous pollutants are analyzed from sampling, wobble measurement, process temperature control and instrument measurement.The results show that: The error of combustion efficiency is less than 0.21%, the error of residual gas coefficient is within 1.11% and the error of gaseous pollutants is within 2.24% by using the mixed sampler with the swinging measurement method. In addition, the combustion efficiency under different operating conditions And the distribution of pollutant component volume fraction were statistically analyzed to confirm that in addition to higher gas-oil ratio combustion efficiency distribution is more uniform, the number of sampling points can be reduced appropriately, the number of sufficient sampling points is to ensure the accuracy of gas analysis test results The necessary conditions.