A temperature measuring device for heat treatment temperature of steel coil in bell furnace

Abstract

The invention discloses a temperature measuring device for the heat treatment temperature of a steel coil in a bell furnace, and relates to the technical field of annealing furnace components. The invention includes a casing, in which thermocouples distributed with coaxial lines are installed, and the detection end of the thermocouple protrudes through a port of the casing; a cavity is formed between the casing and the thermocouple, and the thermocouple is close to the protruding end One side is sleeved with a rotating part, and the thermocouple is also sleeved with a liquid inlet part. Both the rotating part and the liquid inlet part are located in the first cavity, and the outlet end of the liquid inlet part is matched with the inlet end of the rotating part; A cavity 2 is formed between the outer surface and the inner surface of the casing, the port of the cavity 2 is connected with a water outlet, and the port of the liquid inlet part away from the rotating part is connected with a water inlet. The invention completes the heat dissipation of the temperature measuring device through the flowing water, thereby reducing the influence of the internal temperature change of the temperature measuring device in the external environment and improving the stability of the data transmission process.

Description

technical field [0001] The invention belongs to the technical field, in particular to a temperature measuring device for the heat treatment temperature of steel coils in a bell furnace. Background technique [0002] The existing bell-type furnace annealing equipment performs annealing heat treatment on cold-rolled strip steel coils, mainly to make the cold and hot spots of the steel coils in the furnace meet the requirements of the annealing process system during the annealing process, so as to obtain strip products with qualified mechanical properties and surface properties. The annealing process system is mainly calculated by the mathematical model of the bell-type furnace. At present, there is no effective test method that can not only ensure the surface quality of the strip, but also accurately measure and dynamically track the temperature change history of each point inside the annealed steel coil of the bell-type furnace. , so it is impossible to obtain reliable experi...

AI Technical Summary

Problems solved by technology

The annealing process system is mainly calculated by the mathematical model of the bell-type furnace. At present, there is no effective test method that can not only ensure the surface quality of the strip, but also accurately measure and dynamically track the temperature change history of each point inside the annealed steel coil of the bell-type furnace. , so it is impossible to obtain reliable experimental data to correct and validate the bell-type furnace model, so it is difficult to ensure that the annealed steel coil is annealed according to the annealing process system set by the bell-type furnace model, and it is impossible to determine whether the cold and hot spots of the steel coil are annealed Process requirements, it is difficult to guarantee the product performance after annealing

[0003] With the existing bell-type furnace temperature detection device, with the work of the bell-type furnace, the internal temperature of the temperature-measuring device installed inside the bell-type furnace gradually increases until it is close to the temperature inside the bell-type furnace. The stability of data transmission in the temperature detection device makes it easy to increase the error of data transmission, which is not easy to improve the accuracy of data detection

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