Automatic control device of electrode deep insertion of submerged electric furnace

An automatic control device, electric furnace electrode technology, applied in furnace control device, furnace, furnace components and other directions, can solve the problems of frequent electrode lifting, poor accuracy, waste of electric energy, etc., to avoid frequent up and down movements, improve production environment, reduce electrodes The effect of consumption

CN101825401AActive Publication Date: 2010-09-08CHINA ENFI ENGINEERING CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2010-09-08

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Abstract

The invention discloses an automatic control device of electrode deep insertion of a submerged electric furnace, comprising an electrode lifting mechanism for lifting the submerged electric furnace, a resistance survey meter for measuring the electrode deep insertion resistance of the submerged electric furnace and a controller, wherein the controller is respectively connected with the electrode lifting mechanism and the resistance survey meter to compare the resistance obtained by measurement of the resistance survey meter with a preset resistance so as to obtain a resistance difference, and the electrode lifting mechanism is controlled to lift the electrode according to the resistance difference only when the resistance difference exceeds to a preset resistance difference threshold valve and the duration time thereof exceeds preset duration time. The automatic control device 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.
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Description

technical field

[0001] The invention relates to auxiliary equipment of a submerged arc electric furnace, in particular to an automatic control device for 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 heat the 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 arc electric furnace, also kn...

Examples

Embodiment Construction

[0022] 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.

[0023] 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 electrode lifting mechanism 30 . figure 2 It shows the situation when there are materials in the furnace under the working state of the submerged arc electric furnace. Such as figure 2 As shown, the material in the furnace is divided into three layers: the top layer is the added material 41, the second layer is the slag 42 formed after the material is melted, and...