基于双热传导方程的高温燃气温度传感器设计方法  

Design Method of High Gas Temperature Sensor Based on Double Heat Conduction Equation

作　　者：赵俭[1] ZHAO Jian(AVIC Beijing Changcheng Institute of Metrology&Measurement,Beijing 100095,China)

机构地区：[1]航空工业北京长城计量测试技术研究所,北京100095

出　　处：《计量学报》2022年第2期215-221,共7页Acta Metrologica Sinica

基　　金：科工局技术基础项目(JSJL2018205B005)。

摘　　要：介绍了一种实用型的高温燃气温度传感器,从工况条件出发,阐述了该温度传感器的总体结构设计、敏感元件设计、绝缘瓷管选取、屏蔽罩设计以及外壳设计。在屏蔽罩的关键结构尺寸设计中,提出了一种基于双热传导方程的模型,对高温燃气温度传感器的设计方法进行优化,并在热校准风洞上对设计结果进行了试验验证。结果表明:在常压条件下,所设计的高温燃气温度传感器相对测温偏差值为0.2%~1.3%,可应用于航空、航天等领域高温燃气温度的高准确度测量。A practical high gas temperature sensor is introduced,including overall structure design,sensitive element design,ceramic insulator selection,shield design and shell design aimed at a certain working condition.During key structure and size design of the shield,a model based on double heat conduction is put forward by which design method of high gas temperature sensor is optimized,then verification test of the design result has been carried out in the hot wind tunnel.Test result shows that the designed temperature sensor has a relative measuring error of 0.2%~1.3%and can be used for precise measurement of high gas temperature in aviation and aerospace fields.

关 键 词：计量学 温度传感器 高温燃气 双热传导方程 

分 类 号：TB94[一般工业技术—计量学]