Degaussing welding appliance for electrolytic bath

Abstract

The utility model discloses an electrolytic bath degaussing welding appliance which comprises a positioning frame, the positioning frame is in a U shape with an opening in one side, winding cables are wound on the two sides of the opening end of the positioning frame, one ends of the two winding cables are connected with a welding bond strap after being converged at the opening end of the positioning frame, and the other ends of the two winding cables are connected with the welding bond strap. The other ends of the two winding cables are wound on the peripheries of the side walls of the two sides of the positioning frame and the periphery of the side wall of the side, away from the opening end, of the positioning frame respectively and are connected with the midpoint of the side wall of the side, away from the opening end, of the positioning frame after being wound, and the positioning frame is arranged on the periphery of the welding area and makes contact with the welding area. According to the utility model, the electrified coil formed by the winding cable can generate a reverse magnetic field, and the reverse magnetic field and the magnetic field generated by the electrolytic bath in the welding area can be in a mutual offset state, so that the welding area is not influenced by the magnetic field when being welded, and the welding quality of the electrolytic bath during normal production operation is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolytic cells, and in particular to a demagnetizing welding device for electrolytic cells. Background Technology

[0002] In modern aluminum electrolysis, the cryolite-alumina molten salt electrolysis method is used. Molten cryolite is the solvent, aluminum oxide is the solute, carbonaceous material is the anode, and molten aluminum is the cathode. A strong direct current is applied, and an electrochemical reaction occurs at the two electrodes within the electrolysis cell at 950℃-970℃. Aluminum electrolysis involves melting alumina powder by contacting the positive and negative electrodes. During normal production, the aluminum electrolysis cell generates magnetism under the influence of current. This magnetism can have a very negative impact on welding operations, easily causing the arc to deviate from the intended welding point. When welding after the pressure iron in the cell has detached during normal production, phenomena such as magnetic blow, magnetic scattering, and magnetic adsorption can occur. These phenomena can lead to severe incomplete fusion and penetration during welding, resulting in welding failure or substandard weld quality.

[0003] Patent No. ZL201821560162.0 discloses a simple demagnetizing and diverting device that can achieve the demagnetizing effect. However, it needs to be connected to the busbar of the electrolytic cell column during installation. This connection operation is cumbersome, and the entire installation process is time-consuming and labor-intensive, which is not conducive to its widespread use. It is necessary to improve it. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a simple electrolytic cell demagnetizing welding device that can eliminate magnetic blow phenomenon.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] An electrolytic cell demagnetizing welding apparatus includes a positioning frame, which is U-shaped with one side open. Two wound cables are wound around both sides of the opening end of the positioning frame. One end of the two wound cables meets at the opening end of the positioning frame and is connected to a welding ground wire. The other ends of the two wound cables are wound around the outer periphery of the two side walls of the positioning frame and the outer periphery of the side wall of the positioning frame away from the opening end, respectively, and are connected to the midpoint of the side wall of the positioning frame away from the opening end after being wound. The positioning frame is arranged around the welding area and is in contact with the welding area.

[0007] Furthermore, a bolt hole is provided in the middle of the side wall of the positioning frame away from the opening end, and a midpoint bolt is threadedly connected through the bolt hole; the ends of the two wound cables are pressed and fixed to the positioning frame by the midpoint bolt.

[0008] Furthermore, the positioning frame is a metal structure, and the outer periphery of the positioning frame is coated with an insulating coating.

[0009] Furthermore, a grounding protrusion is fixedly connected to the bottom end of the side wall of the positioning frame away from the opening end. The grounding protrusion contacts the welding area and achieves the grounding effect of the welding area.

[0010] Furthermore, insulating components are fixedly connected to the bottom ends of both side walls of the positioning frame, and the positioning frame is placed on the outer periphery of the welding area through the insulating components.

[0011] Furthermore, positioning rings are provided on both sides of the opening end of the positioning frame. The two positioning rings are fixedly connected to the two side walls of the positioning frame respectively. The two positioning rings are correspondingly provided with two winding cables. One end of the winding cable is connected to the welding ground wire, and the other end of the winding cable passes through the corresponding positioning ring and is wrapped around the outer periphery of the side wall of the positioning frame.

[0012] Furthermore, the two wound cables are wound in the same direction on the side wall of the positioning frame.

[0013] Furthermore, the wound cable is made of 25 square millimeter pure copper core wire, and the pure copper core wire of the wound cable is wrapped with a fireproof outer sheath.

[0014] Furthermore, the vertical cross-section of the positioning frame is rectangular.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are:

[0016] When welding detached pressure plates from the electrolytic cell, the detached area is first cleaned. Then, a steel plate of suitable size is joined to the original detached position. Next, a positioning frame with wound cables is placed outside the steel plate, ensuring the welding area along the edge of the steel plate is within the positioning frame. The grounding protrusion on the positioning frame is then in contact with the welding area. At this point, the welding grounding wire, through the wound cables and the grounding protrusion, achieves grounding of the welding area. Simultaneously, after the two wound cables are wound around the outer circumference of the positioning frame, the energized coil formed by the wound cables generates a reverse magnetism. The reverse magnetic field cancels out the magnetic field generated by the electrolytic cell within the welding area, preventing the welding area from being affected by the magnetic field during welding. This avoids phenomena such as magnetic blow, magnetic scattering, and magnetic adsorption during the welding process, effectively improving the welding quality during normal electrolytic cell production operations and ensuring that the welding quality after the electrolytic cell's iron pressure plate falls off meets construction standards. Furthermore, this electrolytic cell demagnetizing welding tool only requires connecting the winding cable to the welding ground wire during use, without needing to connect to the electrolytic cell's column busbar. This simple and quick installation process saves time and effort and has excellent market promotion value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is the main view of the present invention.

[0020] Figure 3 This is a schematic diagram of the positioning frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art to all other embodiments obtained without creative effort should be included within the protection scope of the present utility model.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment discloses an electrolytic cell demagnetizing welding device, including a positioning frame 1. The positioning frame 1 is a metal structure and the outer periphery of the positioning frame 1 is coated with an insulating coating. The positioning frame 1 is arranged in a U-shape with one side open, and the vertical cross section of the positioning frame 1 is a rectangular plate.

[0023] A bolt hole is provided at the midpoint of the side wall of the positioning frame 1 away from the opening end, and a midpoint bolt 4 is threaded through the bolt hole. Two wound cables 2 are wound around both sides of the opening end of the positioning frame 1, with the two wound cables 2 wound in the same direction on the side wall of the positioning frame 1. The wound cables 2 are 25 square millimeter pure copper core wires, and the outer periphery of the pure copper core wires of the wound cables 2 is wrapped with a fireproof outer sheath. One end of the two wound cables 2 converges at the opening end of the positioning frame 1 and is connected to the welding ground wire 3. The other ends of the two wound cables 2 are respectively wound around the outer periphery of the two side walls of the positioning frame 1 and the outer periphery of the side wall of the positioning frame 1 away from the opening end, and are connected to the midpoint bolt 4 on the side wall of the positioning frame 1 away from the opening end after winding. The ends of the two wound cables 2 are pressed and fixed to the positioning frame 1 by the midpoint bolt 4. The positioning frame 1 is arranged around the welding area and in contact with the welding area.

[0024] In this design, two wound cables are energized via the welding machine's ground wire, and the current is transmitted to the grounding protrusion through the bolt hole and positioning frame. Finally, the grounding protrusion achieves the grounding effect between the welding machine's ground wire and the welding area. Alternatively, the ground wire can be split into two lines at the positioning frame position, with the two lines wrapped around both sides of the positioning frame and finally connected to the positioning frame via the midpoint bolt. This design structure can directly form two wound cables using the ground wire, making operation more convenient.

[0025] A grounding protrusion 102 is fixedly connected to the bottom end of the side wall of the positioning frame 1 away from the opening end. The grounding protrusion 102 is located below the bolt hole and contacts the welding area to achieve the grounding effect of the welding area.

[0026] Insulating components 101 are fixedly connected to the bottom ends of both side walls of the positioning frame 1. The bottom end of the insulating component 101 is flush with the bottom end of the grounding protrusion 102, and the positioning frame 1 is placed on the outer periphery of the welding area through the insulating component 101.

[0027] During welding, the bottom end of the insulating component and the bottom end of the grounding protrusion are placed stably on the outer periphery of the welding area. Then, welding is turned on. After the welding is powered on, the current passes through the welding machine's grounding wire, the winding cable, and the grounding protrusion to form a power circuit with the welding area. At the same time, the two winding cables, after being wrapped together, form a power coil, which generates a reverse magnetic field to cancel out the magnetic field generated during the normal operation of the electrolytic cell. This ensures the stability of the welding operation during the normal production operation of the electrolytic cell and effectively improves the welding quality.

[0028] Positioning rings 103 are provided on both sides of the opening end of the positioning frame 1. The two positioning rings 103 are fixedly connected to the two side walls of the positioning frame 1 respectively. The two positioning rings 103 are correspondingly provided with two winding cables 2. One end of the winding cable 2 is connected to the welding ground wire 3, and the other end of the winding cable 2 passes through the corresponding positioning ring 103 and is wrapped around the outer periphery of the side wall of the positioning frame 1.

[0029] The positioning ring design limits the winding cables wound on both sides of the positioning frame, facilitating the convergence of the ends of the two winding cables and preventing the wound cables from unraveling during use. In the design, the number of turns and the winding direction of the winding cables on the positioning frame can be adjusted and varied according to the magnetic field strength and direction generated during normal production operation of the electrolytic cell, so that the magnitude and direction of the magnetic field strength and direction generated by the two winding cables are exactly opposite to the magnetic field generated by the electrolytic cell and cancel each other out, ultimately ensuring that there is no magnetic field interference in the welding area.

[0030] When welding detached pressure plates from the electrolytic cell, the detached area is first cleaned. Then, a steel plate of suitable size is joined to the original detached position. Next, a positioning frame with wound cables is placed outside the steel plate, ensuring the welding area along the edge of the steel plate is within the positioning frame. The grounding protrusion on the positioning frame is then in contact with the welding area. At this point, the welding grounding wire, through the wound cables and the grounding protrusion, achieves grounding of the welding area. Simultaneously, after the two wound cables are wound around the outer circumference of the positioning frame, the energized coil formed by the wound cables generates a reverse magnetism. The reverse magnetic field cancels out the magnetic field generated by the electrolytic cell within the welding area, preventing the welding area from being affected by the magnetic field during welding. This avoids phenomena such as magnetic blow, magnetic scattering, and magnetic adsorption during the welding process, effectively improving the welding quality during normal electrolytic cell production operations and ensuring that the welding quality after the electrolytic cell's iron pressure plate falls off meets construction standards. Furthermore, this electrolytic cell demagnetizing welding tool only requires connecting the winding cable to the welding ground wire during use, without needing to connect to the electrolytic cell's column busbar. This simple and quick installation process saves time and effort and has excellent market promotion value.

Claims

1. A demagnetizing welding apparatus for an electrolytic cell, characterized in that: The electrolytic cell demagnetizing welding fixture includes a positioning frame, which is U-shaped with one side open. Two wound cables are wound around both sides of the opening end of the positioning frame. One end of the two wound cables meets at the opening end of the positioning frame and is connected to the welding ground wire. The other ends of the two wound cables are wound around the outer periphery of the two side walls of the positioning frame and the outer periphery of the side wall of the positioning frame away from the opening end, respectively, and are connected to the midpoint of the side wall of the positioning frame away from the opening end after being wound. The positioning frame is arranged around the welding area and is in contact with the welding area.

2. The electrolytic cell demagnetizing welding apparatus as described in claim 1, characterized in that: The positioning frame has a bolt hole in the middle of the side wall away from the opening end, and a midpoint bolt is threaded through the bolt hole; the ends of the two wound cables are pressed and fixed to the positioning frame by the midpoint bolt.

3. The electrolytic cell demagnetizing welding apparatus as described in claim 2, characterized in that: The positioning frame is a metal structure, and its outer periphery is coated with an insulating coating.

4. The electrolytic cell demagnetizing welding apparatus as described in claim 3, characterized in that: A grounding protrusion is fixedly connected to the bottom end of the side wall of the positioning frame away from the opening end. The grounding protrusion contacts the welding area and achieves the grounding effect of the welding area.

5. The electrolytic cell demagnetizing welding apparatus as described in claim 4, characterized in that: Insulating components are fixedly connected to the bottom ends of both side walls of the positioning frame, and the positioning frame is placed on the outer periphery of the welding area through the insulating components.

6. The electrolytic cell demagnetizing welding apparatus as described in claim 5, characterized in that: Positioning rings are provided on both sides of the opening end of the positioning frame. The two positioning rings are fixedly connected to the two side walls of the positioning frame respectively. The two positioning rings are correspondingly set with two winding cables. One end of the winding cable is connected to the welding ground wire, and the other end of the winding cable passes through the corresponding positioning ring and is wrapped around the outer periphery of the side wall of the positioning frame.

7. The electrolytic cell demagnetizing welding apparatus as described in claim 6, characterized in that: The two wound cables are wound in the same direction on the side wall of the positioning frame.

8. The electrolytic cell demagnetizing welding apparatus as described in claim 7, characterized in that: The wound cable is made of 25 square millimeters pure copper core wire, and the pure copper core wire of the wound cable is wrapped with a fireproof outer sheath.

9. The electrolytic cell demagnetizing welding apparatus as described in claim 8, characterized in that: The vertical cross-section of the positioning frame is rectangular.

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