Non-contact electric-arc-furnace continuous temperature measuring gun structure

Abstract

The invention provides a non-contact electric-arc-furnace continuous temperature measuring gun structure and belongs to the iron and steel smelting technology field. The structure comprises an annular hole cluster spray gun and an infrared temperature measurement probe. The cluster annular hole spray gun is provided with a cooling water sleeve, a supersonic speed airflow nozzle, a small hole with flow and burning and a peep pipe. The infrared temperature measurement probe is installed in the peep pipe of the annular hole cluster spray gun. A protection gas is filled in the peep pipe. A supersonic speed airflow formed by the annular hole cluster spray gun blows a molten pool slag layer so that a melt surface is exposed to the infrared temperature measurement probe. During a smelting process of generating foam slags by an electric-arc furnace, non-contact continuous automatic temperature measurement in an uninterruptible power production process can be realized.

Description

technical field [0001] The invention relates to an automatic temperature measuring device used in electric arc furnace smelting in the metallurgical industry, in particular to a non-contact electric arc furnace continuous temperature measuring gun structure. Background technique [0002] Electric arc furnace, LF refining furnace, converter and other metallurgical processes that produce foamy slag layer need temperature measurement and sampling. The existing technology generally adopts manual operation, which requires power-off operation and generates probe consumption. There is also an automatic temperature measurement and sampling device for the furnace door, which needs to insert the probe into the molten steel, and continuous online temperature measurement cannot be realized, and the data support for the dynamic metallurgical model is not enough. Some non-contact infrared temperature measurement is not well used because it cannot penetrate the foam slag layer. However, t...

AI Technical Summary

Problems solved by technology

[0002] In metallurgical processes such as electric arc furnaces, LF refining furnaces, and converters that produce foamy slag layers, temperature measurement and sampling are required. The existing technology generally uses manual operations, which require power-off operations and generate probe consumption.

There is also an automatic temperature measurement and sampling device for the furnace door, which needs to insert the probe into the molten steel, and continuous online temperature measurement cannot be realized, and the data support for the dynamic metallurgical model is not enough

Some non-contact infrared temperature measurement is not well used because it cannot penetrate the foam slag layer

However, there are also some technical solutions that use clustered airflow to blow off the slag layer, but the axis of the infrared temperature sensor cannot be coaxial with the clustered airflow, and instead is disturbed by the airflow

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