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Automatic power control system of electric furnace

An automatic control system and electric furnace technology, applied in furnace control devices, furnaces, furnace components, etc., can solve problems such as poor power control effect of electric furnaces, and achieve stable furnace conditions and excellent control effects.

Active Publication Date: 2011-02-09
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially the defect of poor electric furnace power control effect in the prior art

Method used

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  • Automatic power control system of electric furnace
  • Automatic power control system of electric furnace
  • Automatic power control system of electric furnace

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] The basic principle of the electric furnace is to apply voltage to the ingredients in the furnace through the electrodes, so that the electric energy is converted into heat energy to achieve the purpose of heating. According to the formula:

[0026] P = U 2 R - - - ( 1 )

[0027] It can be seen that when the voltage U is constant, the heating power P is determined by the resistanc...

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Abstract

The invention provides an automatic power control system of an electric furnace, comprising a depth detection device, a current and voltage detection device, a storage device, an elevating device, and a control device, wherein the storage device is used for storing a preset expert reasoning table and a resistance set value, the elevating device is used for controlling insertion depth of three electrodes into the electric furnace, and the controlling device is used for calculating the current resistance valve of each electrode according to the current value and the current voltage value of each electrode, searching the preset expert reasoning table according to the current resistance value of each electrode and the resistance set value so as to confirm the adjustment range values of the three electrodes, and controlling the elevating device to adjust the insertion depths of the three electrodes into the electric furnace according to the current depth values and the adjustment range values of the three electrodes. Aiming at the characteristics of nonlinearity, time invariance and multivariable coupling of an electric furnace controlled object, the invention effectively solves the problems of complicated modeling and difficult control of the electric furnace object through integrating excellent field operation experience into algorithms via the design to an expert rule and a reasoning mechanism.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an automatic control system for electric furnace power. Background technique [0002] Electric furnaces are widely used in smelting processes, such as holding electric furnaces in lead-zinc smelting, depletion and subsidence electric furnaces in copper smelting, smelting electric furnaces in nickel-iron smelting, etc. Judging from the current situation, whether the electric furnace runs smoothly often has a crucial impact on the entire process and final products. In addition, as a large-load electrical equipment, the operation of the electric furnace directly affects energy consumption and power quality, such as grid shock and harmonics. In recent years, with the continuous expansion of the scale of the electric furnace, the automatic control of the electric furnace has become more and more important. [0003] The purpose of the automatic control of the electric furnace is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D19/00
Inventor 李刚
Owner CHINA ENFI ENGINEERING CORPORATION
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