In order to measure the temperature in the furnace during ethylene cracking,a femtosecond fiber Bragg grating(FBG)high temperature sensor packaged with double ceramic tubes is designed.On the basis of analysis of the temperature measurement principle of femtosecond FBG temperature sensor,the fitting polynomial for temperature measurement in high temperature environment is derived.According to the current temperature measurement situation of ethylene cracking furnace,a double ceramic tube femtosecond FBG sensor and its supporting installation structure are designed for high temperature environment.The Ansys finite element analysis software is used to record the external temperature change and the temperature response time of the FBG sensor packaged.The simulation results show that the temperature response time of the femtosecond FBG temperature sensor packaged with double ceramic tube can meet the needs of real-time temperature measurement of ethylene cracking furnace.
关键词
陶瓷管/飞秒光纤布拉格光栅/高温传感器/温度响应时间
Key words
ceramic tube/femtosecond fiber Bragg grating/high temperature sensors/temperature response time
维普
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