摘要
涡轮叶片表面温度的精确测量是保障航空发动机安全稳定运行的关键,能够防止叶片过热和损坏,延长整个发动机的工作寿命,保证飞机的安全飞行。非接触式辐射测温法测温范围广,精度高,且不会破坏待测对象的原温度场分布,在涡轮叶片温度测量中具有重要应用价值。然而,在涡轮叶片运行的高温环境下使用辐射测温法会受到多方面因素的干扰产生误差,其中反射辐射造成的误差占比最大,因此校正该类误差对进一步提升涡轮叶片测温精度至关重要。总结了基于建立反射辐射模型的校正方法、基于发射率的反射辐射误差校正算法以及基于双光谱区域温度测量(DSAP)的误差校正法等校正反射辐射误差的方法,并在此基础上对反射辐射校正方法的未来发展进行了展望。
The accurate measurement of turbine blade surface temperature is crucial for ensuring the safe and stable operation of an aeroengine,as it can prevent overheating and damage to the blades,extend the engine′s lifes.pan,and ensure the aircraft′s safe flight.Non-contact radiation thermometry is widely used in temperature measure.ment due to its wide range,high precision,and non-destructive nature towards the object′s original temperature field.However,in high-temperature environments where turbine blades operate,various factors interfere with radia.tion temperature measurements and cause errors.Among these factors,reflected radiation error accounts for the larg.est proportion.Therefore,suppressing such errors is vital for accurately measuring blade temperatures.The methods for correcting reflection radiation errors are summarized,such as establishing a reflection radiation model,design.ing reflection radiation error correction algorithms,and using dual-spectrum area pyrometry(DSAP)temperature measurement and optical path optimization methods.Based on this,the development of reflection radiation correc.tion methods is prospected.
作者
吴明佳
李梦茜
王波涛
吉洁
丁铭
孙畅
WU Mingjia;LI Mengxi;WANG Botao;JI Jie;DING Ming;SUN Chang(School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing,China)
出处
《光电技术应用》
2024年第1期22-26,共5页
Electro-Optic Technology Application
关键词
涡轮叶片
辐射测温
反射辐射
误差校正
turbine blade
radiation temperature measurement
reflected radiation
error correction
