Box furnace is an experimental equipment used in coal, electric power, petrochemical, military , metallurgy and coal-related industries. Especially in the coal and electric power industries, the equipment is used in a large amount and the frequency is high, so the calibration is particularly important. "Calibration of Experimental Box-type Resistance Furnace" discusses the calibration method and calculation of box-type resistance furnace. The whole process of the experiment includes the determination of the working area, the determination of the temperature measurement point, the selection of the temperature calibration device, the calibration process and the final calculation. . The calculation is mainly to calculate the furnace temperature uniformity and furnace temperature stability.
Specific Calibration Process
Calibration is usually performed with an empty furnace. Before calibration, fix the measurement end of the detection thermocouple on each determined temperature measurement point position of the temperature measurement frame, and make a mark. Then, put the temperature measuring frame into the furnace, lead the thermocouple reference end out of the furnace, and connect to the measuring instrument through the changeover switch according to the serial number of the mark . Close the furnace door, send power to raise the temperature, and set to the required calibration temperature.
When the furnace temperature reaches the calibration temperature, take a reading after it stabilizes. Within 60 minutes , record the temperature displayed by the monitoring point, each temperature measuring point and the temperature control instrument every 3 minutes, and test 20 times in total. Each record of the monitoring point, each temperature measuring point and the temperature displayed by the temperature control instrument should be completed within 1min.
Experimental results
The calculation of furnace temperature stability is inconsistent with the calculation . According to the experiment and referring to the relevant technical literature, the description in this article is more reasonable and can reflect the stability and fluctuation direction of the furnace.
