Non-contact molten metal solution temperature continuous monitoring method and system

Abstract

The invention provides a non-contact molten metal solution temperature continuous monitoring method and system. The method comprises the steps that an infrared thermal image which is acquired by an uncooled focal plane infrared thermography which shoots a molten metal solution through the opening of a safety mask above a blast furnace channel with the spacing of a preset time period; the infrared thermal image is processed, and an interested area ROI in a processed gray-scale image is determined, wherein ROI is a molten metal solution part which is not covered by an oxide film; temperature information corresponding to all pixels in the ROI is acquired; according to the actual temperature threshold of the molten metal solution, all pixels in the ROI are selected; according to the temperature information corresponding to the pixels retained by the ROI after selection, a temperature value extraction model is established to acquire the temperature value of the molten metal solution. According to the invention, fast, on-line, real-time, continuous and accurate temperature measurement can be carried out on the molten metal solution.

Description

technical field [0001] The invention relates to the technical field of temperature detection, in particular to a method and system for continuously detecting the temperature of a non-contact molten metal solution. Background technique [0002] Molten metal solution is an intermediate product in the metal smelting process, such as molten iron, molten steel, molten aluminum, molten copper, etc. In the metal smelting process, the temperature of the molten metal solution is a very important physical quantity that reflects the energy consumption and quality of the smelting process. A stable and reasonable molten metal solution temperature is the guarantee for the smooth working conditions of the metallurgical process. For example, the molten iron temperature represents the overall thermal state inside the blast furnace and is one of the variables reflecting the blast furnace condition. Too high or too low furnace temperature will lead to furnace conditions Abnormal, seriously af...

AI Technical Summary

Problems solved by technology

The black body cavity temperature measurement method is to insert high temperature resistant materials directly into the molten metal solution, and convert the infrared signal of the temperature measurement probe into a temperature signal, so as to achieve the purpose of continuous temperature measurement, but the equipment is expensive and has a short service life. Practical application of blackbody cavities

Optical fiber temperature measurement inserts the optical fiber or the temperature measuring tube with built-in optical fiber into the molten metal solution, and then uses the optical fiber to collect the thermal radiation at the bottom of the temperature measuring tube and converts it into the temperature of the molten metal solution. Contact with molten metal solution and slag at the same time will greatly affect its service life and increase the cost of use

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