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Automatic control method of electrode deep insertion of submerged electric furnace

An electric furnace electrode and electrode technology, which is applied to furnace control devices, furnaces, furnace components, etc., can solve the problems of unstable production process of submerged arc furnace, large voltage and current changes, environmental pollution of production environment, etc., so as to avoid frequent up and down movements. , reduce the impact, avoid the effect of serious overshoot

Active Publication Date: 2010-09-08
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology

However, the above methods are not suitable for the multi-parameter and large-lag production characteristics of submerged arc furnaces, which cause the electrodes to move up and down frequently, and the overshoot is serious, resulting in frequent arcing, broken electrodes, large voltage and current changes, current imbalance, and power factor. Changes are large and low, which brings unstable production process to the production of submerged arc electric furnace, large waste of electric energy, large impact on the power grid, large electrode unit consumption, and dust caused by material turning or arc light, which makes the production environment change. Defects such as bad and polluted environment

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  • Automatic control method of electrode deep insertion of submerged electric furnace
  • Automatic control method of electrode deep insertion of submerged electric furnace
  • Automatic control method of electrode deep insertion of submerged electric furnace

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Embodiment Construction

[0034] 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.

[0035] The submerged arc electric furnace to which the method for automatically controlling the electrode insertion depth of the submerged arc electric furnace according to the embodiment of the present invention is firstly described below and the electrode insertion depth control device implementing the method according to the embodiment of the present invention:

[0036] figure 1 A structural diagram of a submerged arc electric furnace is shown, and the submerged arc electric furnace includes an electrode 10 , a furnace body 20 and an ...

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Abstract

The invention discloses an automatic control method of electrode deep insertion of a submerged electric furnace, comprising the following steps: measuring an electrode deep insertion resistance of the submerged electric furnace; comparing the resistance obtained by measurement with a preset resistance to obtain a resistance difference; and controlling the lift of an electrode according to the resistance difference only when the resistance difference exceeds a preset resistance difference threshold valve and the duration time thereof exceeds preset duration time. The automatic control method of electrode deep insertion of the submerged electric furnace in the invention can effectively improve production stability of the submerged electric furnace, lower impact to grid, reduce electrode consumption, lessen electric consumption, improve production environment and lighten environment pollution.

Description

technical field [0001] The invention relates to an electrode insertion depth control process of a submerged arc electric furnace, in particular to an automatic control method for the electrode insertion depth of a submerged arc electric furnace. Background technique [0002] An electric arc furnace is an electric furnace that uses the thermal effect of an arc to melt metals and other materials. According to the heating method, it can be divided into three types: ① indirect heating electric arc furnace. The arc is generated between the two electrodes without contacting the material, and the material is heated by heat radiation. This kind of stove is noisy and has low efficiency, so it is gradually eliminated. ② Directly heating electric arc furnace. The arc is generated between the electrode and the material, and the material is directly heated; the three-phase electric arc furnace for steelmaking is the most commonly used direct heating electric arc furnace. ③Submerged a...

Claims

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Application Information

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IPC IPC(8): F27D19/00
Inventor 吴豪泰史更生杨力
Owner CHINA ENFI ENGINEERING CORPORATION
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