新型接触式钢水连续测温传感器设计与研制

Design and Development of a New Contact-Type Continuous Temperature Sensor for Molten Steel

摘要:

针对冶金领域钢水温度原位连续测量的需求，本文提出一种新型接触式连续测温传感器结构方案。通过建立三维传热模型对其热响应特性进行了分析；采用高压工艺和高温退火工艺实现了热电偶/陶瓷保护体一体化敏感组件制备，并将其封入MgO-C材质的探枪式支撑结构内部制作成接触式连续测温传感器。在LF炉（钢包精炼炉）钢水环境下进行了连续测温试验，结果表明：在1 600 ℃~1 650 ℃高温钢水环境下，该传感器有效连续测温时间超过16 min。

Abstract:

In response to the demand for in-situ continuous measurement of molten steel temperature in the field of metallurgy, a novel contact-type continuous temperature measurement sensor structure scheme is proposed. The thermal response characteristics are analyzed by establishing a three-dimensional heat transfer model. Then a high-pressure process and a high-temperature annealing process are used to realize the preparation of an integrated sensitive component of thermocouple/ceramic protection body, which is then encapsulated inside the lance-type support structure of MgO-C material for making a temperature measurement sensor; Continuous temperature measurement tests are carried out under the environment of molten steel of Ladle Furnace, and the results show that in the 1 600 ℃~1 650 ℃ high temperature molten steel environment, the sensor can effectively measure temperature continuously for more than 16 minutes.