航空发动机涡轮叶片发射率测量  

Emissivity Measurement of Aero-engine Turbine Blade

作　　者：熊兵[1] 石小江[1] 陈洪敏[1] 徐凤花[1] 

机构地区：[1]中国燃气涡轮研究院,四川江油621703

出　　处：《燃气涡轮试验与研究》2011年第2期45-48,共4页Gas Turbine Experiment and Research

基　　金：航空基金(2008ZD24014)

摘　　要：对于复杂环境下的涡轮叶片表面温度场测量,红外测温技术是目前该领域最佳方法之一,而发射率的准确测量是红外测温的关键。本文针对涡轮叶片发射率的测量,阐述了热电偶对比法的原理和技术细节,并根据某型发动机涡轮转子叶片温度场试验测试的需求,在600～800℃温度范围内进行了发射率测量。试验数据分析表明,其发射率为0.914,可作为ROTAMAP II辐射高温计的预先设定值。而误差分析表明,该方法具有较高的精度。The infrared temperature measurement technique is one of the best methods of measuring surface temperature field of turbine blades in complicated conditions.Exactly measuring emissivity is a key factor in infrared temperature measurement.Aiming to the measurement of turbine blade emissivity,the principle and techniques details of thermocouple antithesis are described.According to requirements of an aero-engine turbine blade measurement,the emissivities in temperature range from 600℃ to 800℃ are measured,and test data are analyzed.The emissivity 0.914 can be used as the initialization value for the ROTAMAP II infrared thermometer.The error analysis indicates that this method is of upper precision.

关 键 词：辐射测温 发射率 涡轮叶片 

分 类 号：V241.06[航空宇航科学与技术—飞行器设计]