Splashing pre-warning device for converter steelmaking

Abstract

The invention relates to a splashing pre-warning device for converter steelmaking. A miniature camera provided with an automatic sweeping air curtain is installed above a converter oxygen lance muzzle, acquired video signals are transmitted to a monitoring computer, the monitoring computer analyzes and processes the video signals, and the reaction brightness and temperature gradient of acquired videos are calibrated by utilizing computer image processing technology, so that an abnormal state in a smelting process can be judged quickly by a fuzzy control rule set, and an alarm can be given to lead an operator to treat the abnormal state in time, thus a splashing accident in the converter can be avoided, and the safety of the production of the converter is improved.

Description

technical field [0001] The invention relates to a device for real-time monitoring and early warning of metallurgical reactions in the converter steelmaking process. Background technique [0002] The converter is an important equipment in the steelmaking plant. After molten iron and scrap steel are put into the converter, they are smelted by oxygen blowing, and then molten steel is formed through metallurgical reactions. Different steel types and different loads correspond to different amounts of oxygen blowing. The type of steel, the loading amount, and the degree of reaction during oxygen blowing are also different, so the metallurgical reaction inside the converter plays a vital role in the quality of molten steel products. [0003] The process of converter smelting is mainly completed by blowing oxygen to the molten iron and scrap steel loaded into the furnace. Due to the particularity of the converter structure, it is in a relatively sealed state during production, and t...

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Problems solved by technology

[0003] The process of converter smelting is mainly completed by blowing oxygen to the molten iron and scrap steel loaded into the furnace. Due to the particularity of the converter structure, it is in a relatively sealed state during production, and the actual reaction status in the furnace cannot be observed by manual work and existing equipment. , when the operator is actually blowing oxygen, the low oxygen blowing intensity will cause the molten iron in the furnace to be unable to fully oxidize, and the high oxygen blowing intensity will cause overoxidation and splashing. If there are abnormal changes during the oxygen blowing period, it is difficult for the operator to Make an accurate judgment at a time, and liquid steel slag splashing often occurs during smelting. On the one hand, excessive oxygen blowing will cause the molten steel to overheat, changing the quality of the molten steel in the furnace; out of the furnace shell, reducing the amount of steel tapping, causing converter splashing accidents, and the splashed steel slag falling on the equipment will cause fire or equipment burnout. In order to avoid such consequences, operators need to use their personal experience and rely on Manual experience is used for rapid analysis and judgment. The experience of operators in different shifts varies. If the experience is insufficient, it will not only cause liquid slag to overflow, but even cause a fire in severe cases, causing the steelmaking plant to stop production.

[0004] In addition to normal metallurgical reactions, when the converter oxygen lance or flue equipment leaks and other abnormalities, it will also bring catastrophic consequences to the converter. Once the converter oxygen lance or flue equipment cooling water leaks, it will directly enter the converter. , water decomposes directly into H above 1000°C 2 and O 2 , a violent reaction occurs, if the cooling water inlet valve of the equipment cannot be detected and closed in time, the vicious consequences of the converter explosion will occur, so it is necessary to invent a device that can monitor the smelting reaction status in the converter furnace in real time and give an alarm in time

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