基于钇稳定二氧化锆阻温特性的火焰传感器

doi:10.13675/j.cnki. tjjs. 180586

推进技术 ›› 2019, Vol. 40 ›› Issue (8): 1902-1911.DOI: 10.13675/j.cnki. tjjs. 180586

基于钇稳定二氧化锆阻温特性的火焰传感器

北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室，北京 100191

发布日期:2021-08-15
作者简介:徐汉卿，博士生，研究领域为航空发动机燃烧室火焰检测。E-mail:xhq6789@buaa.edu.cn
基金资助:
国家自然科学基金 51506003国家自然科学基金（51506003）。

Flame Sensor Based on Resistance-TemperatureCharacteristic of Yttria-Stabilized Zirconia

National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics,School of Energy and Power Engineering,Beihang University,Beijing 100191,China

Published:2021-08-15

摘要/Abstract

摘要： 基于钇稳定二氧化锆（Yttria-stabilized Zirconia,YSZ）的阻温特性，设计了以YSZ热敏电阻为感受元件的火焰传感器，以传感器热敏电流信号表征火焰状态。采用伏安法，测量了YSZ热敏电阻在673K~1523K温度下的阻值，验证了YSZ阻值与温度的倒数呈指数关系。在Tirril喷灯点火、熄火试验中，研究了激励电压（3V~15V）、火焰温度（720K~1480K）和燃气流量（60L/h~150L/h）对传感器阶跃响应特性的影响。结果表明：热敏电流与激励电压呈正比，随火焰温度的升高而增大；点火响应时间随火焰温度、燃气流量的升高而减小；熄火响应时间基本不受火焰温度与燃气流量的影响。YSZ传感器能够对火焰产生正确响应，并且信号稳定、幅值强烈。

关键词: 火焰传感器;钇稳定二氧化锆;热敏电阻;阻温特性;响应特性

Abstract: A novel flame sensor based on the resistance-temperature characteristic of Yttria-stabilized Zirconia (YSZ) thermistor was devised, and the thermistor current outputted from the sensor served as the indication of flame. The YSZ resistances under temperature ranged from 673K to 1523K were measured by the use of voltammetry, which validated that the resistance depends exponentially on the reciprocal of temperature. The YSZ flame sensor was utilized for the ignition and blowout detections on a Tirril burner, meanwhile, effects of excitation voltage (3V~15V), flame temperature (720K~1480K) and fuel gas flowrate (60L/h~150L/h) on the step response characteristics of the sensor to flame were studied. Results showed that the thermistor current was directly proportional to the excitation voltage and ascended with the flame temperature. The response time to ignition decreased with the flame temperature and fuel gas flowrate. The response time to blowout was independent of the flame temperature and fuel gas flowrate. YSZ flame sensor can correctly respond to the flame and the thermistor current is strong and steady enough.

Key words: Flame sensor;Yttria-stabilized zirconia;Thermistor;Resistance-temperature characteristic;Response characteristic

. 基于钇稳定二氧化锆阻温特性的火焰传感器[J]. 推进技术, 2019, 40(8): 1902-1911.

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基于钇稳定二氧化锆阻温特性的火焰传感器

Flame Sensor Based on Resistance-TemperatureCharacteristic of Yttria-Stabilized Zirconia

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