Automatic electrode control system

Abstract

The invention discloses an automatic electrode control system, belongs to the technical field of electric furnace control, and particularly relates to a multi-dimensional electrode fine control system which can achieve independent lifting of three-phase electrodes and continuous adjustment of electrode circle diameters and is further provided with a plurality of working positions to meet continuous heating of a plurality of steel ladles. A hardware part of the control system comprises a moving base frame, a base, a lifting device, a station adjusting device, a cross arm, an electrode circle adjusting device and an electrode clamping device, a software part of the electrode automatic control system adopts an impedance control strategy, and meanwhile a sectional type moving method and a boundary linkage control method are designed in the implementation process. Compared with the prior art, the control system has the advantages that the energy consumption can be remarkably reduced, the production efficiency is improved, the interference of an electric furnace to a power grid is reduced, electric arc furnace burning and other conditions are avoided, and uniform temperature distribution in the furnace is ensured.

Description

technical field [0001] The invention belongs to the technical field of electric furnace control, and in particular relates to an electrode automatic control system. Background technique [0002] Ladle refining furnace refers to the equipment that also has the function of heating and refining steelmaking furnace. It is an important metallurgical equipment used to refine the molten steel melted in the primary furnace (electric arc furnace, open hearth furnace, converter), and can adjust the temperature of molten steel, process buffer, and meet continuous casting and rolling. The ladle furnace is the main equipment for refining outside the furnace. one. Main functions of ladle refining furnace: 1. Heating and heat preservation of molten steel. The molten steel obtains new heat energy through electric arc heating, which can not only add alloys and adjust components during ladle refining, but also add slag, which is convenient for deep desulfurization and deoxidation of molten ...

AI Technical Summary

Problems solved by technology

[0003] 1) The diameter of the electrode circle of the existing electric furnace cannot be adjusted. Since the diameter of the electrode circle is directly related to energy consumption and output, the diameter of the electrode circle in the electric furnace is too small, and the clear distance between the three electrodes is too small, resulting in the formation of three molten metals. There are too many overlapped parts of the pool or heating area, forming an overly concentrated hot area in the center of the furnace, reducing the resistance between the electrodes, the reaction area in the furnace is too small, the amount of chemical materials is low, the output is low, and the power consumption must be high. If the electric furnace electrode If the diameter of the electrode circle is too large, the net distance between the three electrodes in the electric furnace is too large, resulting in too few overlapping parts of the three molten pools, and there will be a dead angle where the heat is not concentrated in the middle of the three molten pools. Unfavorable production

[0004] 2) During the operation of the refining furnace, the height of the electrodes needs to be adjusted frequently. The three-phase electrodes of some existing refining furnace structures cannot be adjusted independently. Even if the three-phase electrodes of some refining furnace structures can be adjusted independently, their verticality and strength are low , it is prone to shaking during use;

[0005] 3) In the process of heating the ladle, the refining furnace generally adopts the structure of "one furnace and one ladle". When the ladle is in the process of transportation, fixing, installation, etc., the refining furnace can only wait for the ladle to be ready before heating, which wastes a lot of energy. operating hours

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