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分析安装方法对微辐射晶体温度测量的影响

Xin Pei¹, Hanxiao Cui¹

¹School of Aeronautics and Astronautics, Key Laboratory of Advanced Spatial Mechanism and Intelligent Spacecraft (Ministry of Education), Sichuan University, Chengdu 610065, China.

The Review of scientific instruments

|December 1, 2025

概括

用于航空发动机墙壁温度监测的辐射晶体温度计受安装对峙距离的影响. 计算模型揭示了安装孔效应和深度依赖,指导精确的高温测量.

科学领域:

材料科学材料科学材料科学
航空航天工程航空航天工程
热力工程是热力工程中的一个.

背景情况:

辐射晶体温度计是一种被动方法,用于高温测量.
它用于航空发动机旋转部件的墙壁温度监测.
嵌入式安装创建了一个局距离,导致测量和实际墙壁温度之间的偏差.

研究的目的:

建立参数计算传热模型.
为了确定不同安装配置的温度场分布.
分析安装参数对测量准确性的影响.

主要方法:

开发参数计算传热模型.
模拟温度场分布的模拟.
对热扰动和深度依赖的分析.

主要成果:

来自安装孔的热扰动沿深度轴以辐射方式集中.
对叶片温度的影响在孔径的两倍以上是可以忽略不计的.
水晶温度读数显示强烈的深度依赖.
覆盖板对准确度的影响最小,但提高了统一性;对于厚度>0.1mm的回报率下降.

结论:

安装配置显著影响辐射晶体温度计的准确性.
计算建模对于理解和减轻测量错误至关重要.
优化的安装设计,包括盖板厚度,对于航空发动机中可靠的高温测量是必要的.

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