Contact type temperature measuring device used for moving steel strip

Abstract

The invention relates to a contact type temperature measuring device used for a moving steel strip. The contact type temperature measuring device comprises a temperature recording instrument, a thermal insulation box, two thermocouple ports, at least three connection steel strips, at least three magnetic positioning devices, at least four thermocouple fixing devices and at least four thermocouples. One ends of the three connection steel strips are connected with the two ends and the middle of the front portion of the thermal insulation box respectively, and the other ends of the three connection steel strips are connected with the three magnetic positioning devices respectively. Three of the four thermocouple fixing devices are connected with the three magnetic positioning devices respectively, and the fourth thermocouple fixing device is directly connected with the thermal insulation box. One end of each thermocouple is connected with the corresponding thermocouple port, and the other end of each thermocouple is connected with the corresponding thermocouple fixing device. The ends, connected with the thermocouple fixing devices, of the thermocouples are in rigid contact with a horizontal plane. The temperature recording instrument is arranged in the thermal insulation box. The contact type temperature measuring device is simple to operate, includes a plurality of temperature measuring points, is high in temperature measuring precision and can be used for continuously measuring temperature changes of the moving steel strip in a whole furnace.

Description

Technical field [0001] The invention relates to a temperature measuring device, in particular to a contact temperature measuring device for moving strip steel. Background technique [0002] Color-coated steel sheets are widely used in construction, home appliances, automobiles and other industries. After being coated, color-coated steel strips are baked in the baking furnace by hot air injection. The baking process has higher requirements on the target temperature of the strip heating and the uniformity of the plate surface temperature. Therefore, accurately measuring the temperature of the strip is an important guarantee for the production of qualified products. [0003] At present, the following methods are mainly used to measure the temperature of strip steel in the baking furnace: [0004] (1) Install a radiation thermometer behind the oven [0005] The method is to install a radiation thermometer at the outlet of the furnace strip. First of all, the principle of radiation ther...

AI Technical Summary

Problems solved by technology

Due to the short time of the strip steel in the furnace, the measurement of the strip steel in the furnace time by this method is quite different from the normal process requirements, and the measurement data cannot meet the needs of process diagnosis; It is easy to collide with the furnace equipment and affect the safety of the unit

[0012] Therefore, the existing methods are difficult to accurately measure the temperature of the steel strip, especially the entire temperature change process of the steel strip in the furnace.

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