CN216282678U

CN216282678U - Biphase series connection slag electric arc furnace device with controllable polarity

Info

Publication number: CN216282678U
Application number: CN202122736883.0U
Authority: CN
Inventors: 高辉
Original assignee: Xi'an New Qindong Metallurgical Technology Co ltd
Current assignee: Xi'an New Qindong Metallurgical Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-12
Anticipated expiration: 2031-11-10

Abstract

The utility model provides a two-phase series connection slag electric arc furnace device with controllable polarity, which comprises a furnace body, wherein a base surface close to the furnace body is fixedly provided with an upright post guide seat, an upright post is sleeved in the upright post guide seat, the bottom end of the upright post guide seat is fixedly provided with a hydraulic lifting oil cylinder, the top end of the upright post is fixedly provided with an electrode seat, an included angle oil cylinder is hinged on the electrode seat, the included angle oil cylinder is movably connected with two electrode clamping cross arms through two series connecting rods, the outer side end of each electrode clamping cross arm is respectively and fixedly clamped with an electrode, a variable flow short net is electrically connected with a controllable polarity frequency conversion cabinet, the controllable polarity frequency conversion cabinet is electrically connected with a transformer through an alternating current short net, the utility model can realize that the two electrodes of a two-pole electric furnace synchronously change the included angle and the distance between the electrodes, thereby leading the two electrodes to directly strike arcs at the end parts under the condition of not using any arc-inducing agent, can realize direct arcing and furnace opening without an arc striking agent.

Description

Biphase series connection slag electric arc furnace device with controllable polarity

Technical Field

The utility model belongs to the technical field of slag smelting disposal devices, and particularly relates to a two-phase series slag electric arc furnace device with controllable polarity.

Background

The single-pole DC arc furnace is an electric furnace with power supply electrode at the bottom of the furnace body, and the furnace body is used for receiving high-temperature molten liquid, so that the furnace body of the common single-pole DC arc furnace is built with refractory materials. Refractory materials are an uncertain source of contamination for smelting high purity slag, which is present in a single-pole dc arc furnace.

Smelting high-purity materials, wherein a water-cooled copper crucible is usually selected as a furnace body container; when the water-cooled copper crucible is adopted for the high-purity slag, a bipolar direct current electric furnace structure is required to replace a unipolar direct current power supply structure; however, when the bipolar direct-current power supply structure starts an arc, the assistance of an arc striking agent is generally needed, and the arc striking agent can pollute high-purity slag; therefore, the conventional bipolar direct current electric furnace cannot meet the requirement of smelting high-purity slag by using a water-cooled copper crucible. A bipolar direct current electric arc furnace is an electric furnace structure with a positive electrode and a negative electrode both being lifting electrodes, and the electric furnace structure can lead out the phenomenon that the outputs of the positive electrode and the negative electrode are unbalanced. Therefore, the bipolar direct current electric arc furnace is provided with a controllable polarity variable frequency power supply to replace a rectification power supply for supplying power, and is an effective method for solving the problem.

The existing electric furnace equipment is used for smelting high-purity slag, and the problem of refractory material pollution exists; a water-cooled copper crucible without refractory materials is adopted for smelting high-purity slag, and a bipolar direct-current furnace structure is required to be configured; the requirement of a bipolar direct current furnace structure on gas arc has the problems of pollution of high-purity slag and unbalanced input, so that the large-scale smelting of the high-purity slag is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a slag arc furnace apparatus with controllable polarity, which is connected in series in two phases, to solve the above problems in the prior art.

In order to solve the technical problems, the utility model adopts the technical scheme that: a biphase series connection slag electric arc furnace device with controllable polarity comprises a furnace body, wherein the middle lower section of the furnace body is embedded into a base body, a stand column guide seat is fixed on the surface of the base body close to the furnace body, a stand column is sleeved in the stand column guide seat, a hydraulic lifting oil cylinder is fixed at the bottom end of the stand column guide seat, and the lifting adjustment of the stand column is completed through the hydraulic lifting oil cylinder;

an electrode seat is fixed at the top end of the upright post, an included angle oil cylinder is hinged to the electrode seat, two electrode clamping cross arms are movably connected to the included angle oil cylinder through two series connecting rods, and an electrode is respectively clamped and fixed at the outer side end of each electrode clamping cross arm;

the electrodes are electrically connected with the short converter network through water-cooled cables respectively, the short converter network is electrically connected with the controllable polarity frequency conversion cabinet, and the controllable polarity frequency conversion cabinet is electrically connected with the transformer through the short AC network.

Preferably, two transverse hinged seats are fixed on the electrode seat, the transverse hinged seats are rotatably connected with the bottom side of the electrode clamping cross arm, a vertical hinged seat is fixed on the vertical side of the electrode clamping cross arm, the top end of a telescopic shaft of the included angle oil cylinder is respectively rotatably connected with two series connecting rods, the other end of each series connecting rod is respectively rotatably connected in the vertical hinged seat, and the inclination adjustment of the electrode clamping cross arm is completed through the effect of the included angle oil cylinder, the transverse hinged seat and the vertical hinged seat, so that the inclination adjustment of the electrode is completed.

Preferably, the furnace body is a water-cooled copper crucible furnace body.

Preferably, the transformer is a rectifier transformer of a controllable polarity power supply, and is further connected with a power supply controller, and is further connected with a pure water cooler through the power supply controller, and the pure water cooler is used for cooling the thyristor element.

Preferably, an insulating material is arranged between the upright post and the electrode seat, an insulating material is also arranged between the electrode seat and the included angle oil cylinder, and the series connection connecting rod is made of the insulating material.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, smelting treatment of high-purity slag is carried out through a two-phase series connection mode and a controllable polarity variable frequency power supply function, meanwhile, the inclination adjustment of the electrode clamping cross arm is completed through the action of the included angle oil cylinder, the transverse hinged seat and the vertical hinged seat, so that the inclination adjustment of the electrode is completed, the included angle of the end parts of the two electrodes can be adjusted through the included angle oil cylinder, the synchronous change of the included angle and the distance between the electrodes of the two-electrode electric furnace can be realized, the two electrodes can directly start the arc at the end parts under the condition of not using any arc-starting agent, and the direct arc-starting and furnace opening without the arc-starting agent can be realized.

Drawings

FIG. 1 is a schematic side sectional view of the overall construction of the present invention;

FIG. 2 is a top view of the overall structure of the present invention;

FIG. 3 is a schematic view of the connection structure of the electrode holder and the electrode holding cross arm of the present invention;

fig. 4 is a schematic view of another connection state of the electrode holder and the electrode clamping cross arm of the utility model.

Description of reference numerals:

1-furnace body; 2-upright post guide seat; 3-upright column; 4-hydraulic lift cylinder; 5-electrode holder; 51-included angle oil cylinder; 52-series connecting rod; 53-electrode clamping cross arm; 54-transverse hinged seats; 55-vertical hinged seats; 6-an electrode; 7-a controllable polarity frequency conversion cabinet; 8-a transformer; 9-short converter network; 10-ac short net.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: the utility model provides a slag electric arc furnace device of controllable polarity of diphase series connection, includes furnace body 1, furnace body 1 specifically is water-cooling copper crucible furnace body, in the base member was embedded into to the lower middle segment of furnace body 1, be copper product preparation, water cooling, hold the crucible furnace body of high temperature melt, as the direct contact container of high-purity slag, water-cooling copper crucible possesses clean pollution-free good characteristics.

A stand column guide seat 2 is fixed on the base surface close to the furnace body 1, a stand column 3 is sleeved in the stand column guide seat 2, a hydraulic lifting oil cylinder 4 is fixed at the bottom end of the stand column guide seat 2, and the lifting adjustment of the stand column 3 is completed through the hydraulic lifting oil cylinder 4.

An electrode seat 5 is fixed at the top end of the upright post 3, two transverse hinged seats 54 are fixed on the electrode seat 5, the transverse hinge seat 54 is rotatably connected with the bottom side of the electrode holding cross arm 53, the vertical hinge seat 55 is fixed on the vertical side of the electrode holding cross arm 53, the top end of the telescopic shaft of the included angle oil cylinder 51 is respectively and rotatably connected with two serial connecting rods 52, the other end of each serial connecting rod 52 is respectively and rotatably connected in a vertical hinged seat 55, the inclination adjustment of the electrode clamping cross arms 53 is completed through the action of the included angle oil cylinders 51, the transverse hinge seats 54 and the vertical hinge seats 55, the outer side end of each electrode clamping cross arm 53 is respectively clamped and fixed with one electrode 6, thereby finishing the inclination adjustment of the electrodes 6, adjusting the included angle of the end parts of the two electrodes through the included angle oil cylinder 51, so that both electrodes 6 are directly ignited at the ends without using any ignition agent.

An insulating material is arranged between the upright post 3 and the electrode seat 5, an insulating material is also arranged between the electrode seat 5 and the included angle oil cylinder 51, the series connecting rod 52 is made of an insulating material,

the electrodes 6 are electrically connected with a short converter network 9 through water-cooled cables respectively, the short converter network 9 is electrically connected with a controllable polarity frequency conversion cabinet 7, and the controllable polarity frequency conversion cabinet 7 is electrically connected with a transformer 8 through a short converter network 10.

The transformer 8 is specifically a rectifier transformer of a controllable polarity power supply, and is also connected with a power supply controller, and is also connected with a pure water cooler through the power supply controller, and the pure water cooler is used for cooling a thyristor element, and a bipolar controllable polarity direct current power supply system is adopted, so that direct current with controllable polarity and extremely low frequency can be formed on the two electrodes 6, the output power balance of the two electrodes 6 is ensured, the influence of local overheating caused by the water-cooled copper crucible is avoided, and the purpose of smelting high-purity materials by using the water-cooled copper crucible can be met.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A biphase series connection slag electric arc furnace device with controllable polarity is characterized in that: the furnace comprises a furnace body (1), wherein the middle lower section of the furnace body (1) is embedded into a base body, a stand column guide seat (2) is fixed on the surface of the base body close to the furnace body (1), a stand column (3) is sleeved in the stand column guide seat (2), a hydraulic lifting oil cylinder (4) is fixed at the bottom end of the stand column guide seat (2), and the lifting adjustment of the stand column (3) is completed through the hydraulic lifting oil cylinder (4);

an electrode seat (5) is fixed at the top end of the upright post (3), an included angle oil cylinder (51) is hinged to the electrode seat (5), two electrode clamping cross arms (53) are movably connected to the included angle oil cylinder (51) through two series connecting rods (52), and an electrode (6) is respectively clamped and fixed at the outer side end of each electrode clamping cross arm (53);

the electrode (6) is electrically connected with the short converter network (9) through a water-cooled cable, the short converter network (9) is electrically connected with the controllable polarity frequency conversion cabinet (7), and the controllable polarity frequency conversion cabinet (7) is electrically connected with the transformer (8) through the short AC network (10).

2. A two-phase series connection slag electric arc furnace device with controllable polarity as claimed in claim 1, wherein two horizontal hinged seats (54) are fixed on the electrode seat (5), the horizontal hinged seats (54) are rotatably connected with the bottom side of the electrode clamping cross arm (53), a vertical hinged seat (55) is fixed on the vertical side of the electrode clamping cross arm (53), two serial connecting rods (52) are respectively rotatably connected with the top end of the telescopic shaft of the included angle oil cylinder (51), the other end of each serial connecting rod (52) is respectively rotatably connected in the vertical hinged seat (55), and the inclination adjustment of the electrode clamping cross arm (53) is completed through the actions of the included angle oil cylinder (51), the horizontal hinged seats (54) and the vertical hinged seat (55), so as to complete the inclination adjustment of the electrode (6).

3. A two-phase series connection slag arc furnace installation with controlled polarity according to claim 1, characterised in that the furnace body (1) is embodied as a water-cooled copper crucible furnace body.

4. A two-phase series connection slag arc furnace installation with controlled polarity according to claim 1, characterised in that the transformer (8) is embodied as a rectifier transformer of a controlled polarity power supply and is further connected with a power supply controller, via which a pure water cooler is further connected for cooling the thyristor elements.

5. A two-phase series connection slag arc furnace installation with controlled polarity according to claim 1, characterized in that an insulating material is arranged between the column (3) and the electrode holder (5), an insulating material is also arranged between the electrode holder (5) and the angle cylinder (51), and the series connection rod (52) is made of an insulating material.