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Device and method for the process-based power control of an electric arc furnace

An electric arc furnace, power technology, applied in the direction of electric heating device, adjusting electric variable, heating through discharge, etc., can solve the problem of insufficient simulation process state and so on

Active Publication Date: 2015-07-29
MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above-mentioned regulations only very insufficiently simulate the actual process state, especially in manual and automatic control devices

Method used

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  • Device and method for the process-based power control of an electric arc furnace
  • Device and method for the process-based power control of an electric arc furnace
  • Device and method for the process-based power control of an electric arc furnace

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Embodiment Construction

[0039] figure 1 A schematic diagram of a system 1 for melting metal by means of an electric arc furnace 10 is shown. The electric arc furnace 10 comprises a furnace vessel 11 in which steel scrap is melted and a melt 3 is produced. The furnace vessel 11 may also be provided with a cover (not shown). The wall 12 and the cover are provided with water cooling means. Depending on the mode of operation of the arc furnace 10 , it has one or three electrodes 4 . One electrode 4 is used in a DC arc furnace. Three electrodes 4 are used in the three-phase arc furnace 10 . The ensuing description depicts the principles of the invention with the example of a three-phase electric arc furnace. Fireproofing material (not shown) is added as a lining to the inner wall 13 of the electric arc furnace 10 .

[0040] The electrodes 4 are mounted on support arms (not shown) and can be placed in the furnace vessel 11 if required. Each of the electrodes 4 is equipped with an outer conductor 5 ,...

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Abstract

The invention relates to a device and a method for the process-based power control of an electric arc furnace (10). Several types of sensors (15, 16, 17) detect current operational parameters of the electric arc furnace (10) in accordance with time. A control and regulating unit (30) determines, from the measurement values, whether it is necessary to activate, by means of a semiconductor switch (20), other winding taps (TSI,...,TSN) on the primary side (6P) of the furnace transformer (6) in order to vary the electric power to prevent thermal or mechanical damage to the electric arc furnace (10).

Description

technical field [0001] The invention relates to a device for process-guided regulation of the power of an electric arc furnace. In particular, the device is provided for this purpose with a plurality of sensor types for detecting the current operating parameters of the electric arc furnace over time. The current operating parameters are passed on to the control and regulation unit and the required regulation is calculated by a corresponding regulation algorithm. This regulation of the electric arc furnace is carried out by means of at least one furnace transformer. The control and regulating unit cooperates with at least one on-load tap changer, wherein winding taps on the primary side of the furnace transformer can be switched by means of the on-load tap changer. Three electrodes are electrically connected to the secondary side of the at least one furnace transformer and are each arranged in a line. [0002] Furthermore, the invention relates to a method for regulating the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B7/144G05F1/20
CPCH05B7/144Y02P10/25G05F1/20
Inventor K·克吕格尔D·多纳尔K·菲尔埃克A·巴比斯基
Owner MASCHFAB REINHAUSEN GEBR SCHEUBECK GMBH & CO KG