Temperature measurement device for hearth workpiece surface and temperature measurement method

Abstract

The invention discloses a temperature measurement device for the surface of a hearth workpiece, consisting of an endoscope temperature measurement probe, a cycle cooling system, a thermal imaging system, a terminal thermal imagery processing system and a support adjustment system. One end of the thermal imaging system is connected to the endoscope temperature measurement probe and the other end of the endoscope temperature measurement probe is connected to the terminal thermal imagery processing system; the thermal imaging system is installed and fixed on the support adjustment system; the endoscope temperature measurement probe is provided with a cycle water inlet and a cycle water outlet; the cycle cooling system is communicated with the cycle water inlet and the cycle water outlet of the endoscope temperature measurement probe through pipelines. The temperature measurement device disclosed by the invention can perform detection on the inside walls of various modes of the direct fire hearth and the workpiece wall and can perform wide range and wide visual angle thermal imaging measurement on the temperature filed of the surface of the workpiece inside health. The invention also discloses a temperature measurement method.

Description

technical field [0001] The invention relates to a furnace temperature measuring device and a temperature measuring method in the technical field of engineering detection, in particular to a furnace workpiece surface temperature measuring device and a temperature measuring method. Background technique [0002] In the actual production process of the thermal processing industry, the surface temperature distribution of the heated workpiece inside the furnace, especially the temperature distribution of the furnace tube wall surface of the direct-fired tubular heating furnace has always been an important technical index that people care about. Therefore, people have been working on solving the problem of measuring the surface temperature distribution of the heated workpiece in the furnace for many years. The traditional method of monitoring the temperature of the furnace tube wall is to embed thermocouples on the surface of the furnace tube. This method can only detect the temper...

AI Technical Summary

Problems solved by technology

Although the device disclosed in this patent is equipped with a mirror group in the protective casing, it is impossible for the lens group to receive infrared and visible light at the same time. Even if only the infrared lens is installed, the attenuation of the infrared radiation of the workpiece to be measured is very large, so large measurement error

This patent does not set a high-temperature flue gas filter, which cannot eliminate the heat shielding effect of the flue gas on the furnace tube, and the temperature measurement result cannot reflect the real situation of the temperature distribution of the furnace tube surface in the furnace

In addition, since the device is not equipped with a contact point thermometer to correct the error of the infrared thermal image temperature measurement, this measurement device also has a large temperature measurement error

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