基于铱铑合金的超声测温传感器设计

Design of ultrasonic temperature sensor based on iridium and rhodium alloy

针对目前超高温度接触式测温的现状,基于超声测温技术设计了一种可以在超高温氧化环境下使用的温度传感器。超声温度传感器的关键问题在于传感器材料的选择,这直接影响到测温的精度、响应时间和使用环境等方面。通过对比多种材料的物理特性,最终确定了用铱铑合金制作传感器,并且通过研究超声波在波导杆中传播特性得出了传感器感温元件各结构的参数,经过高温校准平台的测试。实验结果表明使用铱铑合金制作的传感器可以在氧化环境中测量常温到1 600℃的温度,性能可靠、重复性好。

In view of the current situation of ultrahigh temperature contact temperature measurement,a temperature sensor which can be used under ultra-high temperature oxidation environment is designed based on ultrasonic temperature measurement technology.The key issue of ultrasonic temperature sensor lies in the choice of sensor temperature sensing element material,which directly affects the accuracy of temperature measurement,response time and the use of the environment.This article by comparing the physical properties of a variety of materials,and ultimately determine the use of iridium rhodium alloy temperature sensing device.And through the study of ultrasonic wave propagation characteristics in the waveguide rod temperature of the various components of the structure parameters.After high temperature calibration platform test,the experimental results show that the use of iridium and rhodium alloy sensor for temperature sensor can be measured in an oxidizing environment at room temperature to1 600 ℃temperature,reliable performance,good repeatability.