An electrode automatic control system

Abstract

The invention discloses an electrode automatic control system, which belongs to the technical field of electric furnace control, and in particular relates to a multi-dimensional electrode refinement control system, which can realize independent lifting of three-phase electrode heights and continuous adjustment of electrode circle diameters. In addition, it also has multiple One working position meets the continuous heating of multiple ladles. The hardware part of the control system includes a mobile base frame, a base, a lifting device, a station adjustment device, a cross arm, an electrode circle adjustment device, and an electrode clamping device. The electrode automation control system The software part of the paper adopts the impedance control strategy, and at the same time, the segmented movement method and the boundary linkage control method are designed in the realization process. Compared with the prior art, the invention can significantly reduce energy consumption, improve production efficiency, reduce the interference of the electric furnace to the power grid, avoid situations such as arc burning of the furnace, and ensure uniform temperature distribution in the furnace.

Description

technical field [0001] The invention belongs to the technical field of electric furnace control, in particular to an electrode automation control system. Background technique [0002] Ladle refining furnace refers to equipment with both heating and refining functions of steelmaking furnace. It is an important metallurgical equipment used for refining molten steel in primary furnaces (electric arc furnace, open hearth, converter), and can adjust the temperature of molten steel, process buffering, and satisfy continuous casting and continuous rolling. Ladle furnace is the main equipment for refining outside the furnace. one. The main functions of the ladle refining furnace: 1. The function of heating and heat preservation of molten steel. The molten steel obtains new thermal energy through arc heating, which can not only add alloy and adjust the composition during ladle refining, but also add slag material, which is convenient for deep desulfurization and deoxidation of molt...

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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. If there are too many overlapping parts of the pool or heating area, an overly concentrated hot area will be formed in the center of the furnace, which will reduce the resistance between the electrodes. 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 start heating when the ladle is ready, which wastes a lot of energy. operating hours

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