Electrode holder

Abstract

The utility model relates to the technical field of electric arc furnaces, and discloses an electrode holder which comprises an arc-shaped clamping plate and further comprises a conductive assembly arranged on the inner wall of the arc-shaped clamping plate and used for clamping an electrode. The opposite-pulling assembly is arranged at one end of the threaded column and used for enhancing the clamping strength of the arc-shaped clamping plate. According to the utility model, the conductive assembly is in interference fit with the electrode to supply power to the electrode in a contact conduction mode; the conductive assembly is rapidly cooled through the cooling assembly, so that the temperature of the electrode is reduced to avoid thermal oxidation, and the service life of the electrode is prolonged; through cooperation of the opposite-pulling assembly and the limiting assembly, the two arc-shaped clamping plates are driven to be tensioned in the direction of the electrode, so that the conductive tile and the electrode are always kept in interference fit, frequent lifting actions of the electrode are adapted, electrode clamping failure caused by loosening of a threaded column and a fastening nut can be effectively prevented, and the clamping stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of arc furnaces, and specifically relates to an electrode holder. Background Art

[0002] The electrode holder can ensure the correct position and stable operation of the electrode in the equipment, and through different materials and technologies to ensure its performance and durability. For example, T2 copper and chromium zirconium copper with good electrical conductivity and high temperature resistance are often used in the manufacture of electrode holders. As a device for fixing and adjusting the position of the electrode, it is widely used in the conductive joint parts of arc furnaces to install and clamp the arc furnace electrodes.

[0003] When the existing electrode holders are in use, most of them use splints or bushings to clamp and position the electrode in an interference fit manner, and then use bolts as fasteners between the splints or bushings. However, due to the frequent lifting of the electrode, after long-term operation, it is very likely that the bolts will become loose, and further, gaps will appear between the splints and the electrode, resulting in loosening and poor contact. The clamping stability is relatively general, which is not conducive to the long-term use of the electrode holder and affects the normal operation of the arc furnace. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an electrode holder to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An electrode holder includes arc-shaped splints. There are two arc-shaped splints and they are arranged mirror-symmetrically. It also includes:

[0006] A conductive component arranged on the inner wall of the arc-shaped splint for clamping the electrode. A cooling component for increasing the cooling speed of the conductive component is arranged on the outer side of the arc-shaped splint. Connection parts are arranged at both ends of the arc-shaped splint, and threaded columns are arranged between adjacent connection parts;

[0007] A tension component arranged at one end of the threaded column for strengthening the clamping strength of the arc-shaped splint. A fixing cylinder is vertically installed on the outer side of the connection part, and a limiting component for preventing the tension component from detaching from the connection part is arranged inside the fixing cylinder located below.

[0008] Preferably, the conductive component includes a positioning groove arranged on the inner wall of the arc-shaped splint. A conductive tile adapted to the positioning groove is arranged inside the positioning groove, and the conductive tile is connected to the inner wall of the positioning groove through bolts.

[0009] Preferably, the cooling component includes a boss arranged on the outer side of the arc-shaped splint. A circulating liquid channel is opened inside the boss, and the circulating liquid channel is designed in a snake shape.

[0010] Preferably, liquid ports are provided at both ends of the circulating liquid channel, and valves are installed inside each liquid port.

[0011] Preferably, the tensioning assembly includes a conical cavity provided inside the fixed cylinder. One end of the threaded column penetrates into the conical cavity and is fixedly connected to a conical block. A plurality of tensioning clips are provided outside the conical block, and the plurality of tensioning clips are circumferentially distributed around the periphery of the conical block. The bottom of the tensioning clip is connected to the connecting portion. Guide blocks corresponding to the number of tensioning clips are symmetrically installed outside the conical block. A guide groove corresponding to the guide block is provided on the side of the tensioning clip facing the conical block, and the guide block is located inside the guide groove.

[0012] Preferably, the limiting assembly includes a receiving cavity provided at the opening at the top of the fixed cylinder. One end of the threaded column penetrates outside the receiving cavity and is screwed with a fastening nut.

[0013] Preferably, a spring washer is provided between the fastening nut and the fixed cylinder, and the spring washer is in contact with the fastening nut and the fixed cylinder respectively.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, the conductive assembly is in interference fit with the electrode to supply power to the electrode in a contact conduction manner; the cooling assembly is used to quickly cool the conductive assembly, thereby reducing the temperature of the electrode to avoid thermal oxidation, which is beneficial to improving the service life of the electrode; the tensioning assembly and the limiting assembly cooperate to drive the two arc-shaped clamping plates to tighten towards the electrode, so that the conductive tile and the electrode always maintain an interference fit, thus adapting to the frequent lifting actions of the electrode, and effectively preventing the electrode clamping failure caused by the loosening of the threaded column and the fastening nut, and improving the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the electrode holder provided by the present utility model;

[0017] Figure 2 is a schematic structural diagram of the conductive assembly provided by the present utility model;

[0018] Figure 3 is a schematic structural diagram of the tensioning assembly provided by the present utility model;

[0019] Figure 4 is a schematic structural diagram of the limiting assembly provided by the present utility model.

[0020] In the figure: 1. Arc-shaped splint; 2. Connecting part; 3. Fixed cylinder; 4. Cooling component; 41. Boss; 42. Circulating liquid channel; 5. Liquid port; 6. Conductive component; 61. Positioning groove; 62. Conductive tile; 7. Threaded post; 8. Opposing tension component; 81. Conical cavity; 82. Tightening clip; 83. Conical block; 84. Guide block; 85. Guide groove; 9. Limiting component; 91. Accommodating cavity; 92. Fastening nut; 10. Spring washer. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 As shown, an electrode holder includes arc-shaped splints 1. There are two arc-shaped splints 1 and they are arranged in a mirror image. It also includes: a conductive component 6 provided on the inner wall of the arc-shaped splint 1 for clamping the electrode. By setting the conductive component 6, as an important component in the arc furnace, it is mainly made of conductive materials, which can not only withstand high external forces but also meet high mechanical strength and electrical conductivity; a cooling component 4 is provided outside the arc-shaped splint 1 to increase the cooling speed of the conductive component 6. By setting the cooling component 4, the conductive component 6 is cooled by an external cooling medium, thereby reducing the temperature of the electrode to avoid thermal oxidation, which is beneficial to improving the service life of the electrode; connecting parts 2 are provided at both ends of the arc-shaped splint 1, and a threaded post 7 is provided between adjacent connecting parts 2; an opposing tension component 8 provided at one end of the threaded post 7 for strengthening the clamping strength of the arc-shaped splint 1. By setting the opposing tension component 8, the two arc-shaped splints 1 can be driven to approach the electrode side, so that the conductive component 6 and the electrode always maintain an interference fit, and it can effectively prevent the threaded post 7 from loosening due to the frequent lifting and lowering actions of the electrode, making the clamping stability of the arc-shaped splint 1 for the electrode better; a fixed cylinder 3 is vertically installed outside the connecting part 2, and a limiting component 9 for preventing the opposing tension component 8 from detaching from the connecting part 2 is provided inside the fixed cylinder 3 located below. By setting the limiting component 9 and cooperating with the opposing tension component 8 to tightly clamp the electrode by the arc-shaped splint 1, it can adapt to the frequent lifting and lowering actions of the electrode and make the power supply of the conductive component 6 more stable.

[0023] The conductive component 6 includes a positioning groove 61 provided on the inner wall of the arc-shaped splint 1. A conductive tile 62 adapted to it is provided inside the positioning groove 61, and the conductive tile 62 is connected to the inner wall of the positioning groove 61 by bolts, such as Figure 2As shown, the arc-shaped clamping plate 1 can drive the conductive tile 62 to be in interference fit with the electrode. After the electrode is positioned and installed, the conductive tile 62 supplies power to the electrode by means of contact conduction.

[0024] The cooling component 4 includes a boss 41 provided on the outer side of the arc-shaped clamping plate 1. A circulating liquid channel 42 is opened inside the boss 41. The circulating liquid channel 42 is designed in a snake shape. As Figure 2 shown, through the snake-shaped circulating liquid channel 42, the residence time of the cooling medium inside the circulating liquid channel 42 is extended, and the heat exchange effect of the cooling medium is improved. In this way, the conductive component 6 is quickly cooled, and then the temperature of the electrode is reduced to avoid thermal oxidation, which is beneficial to improving the service life of the electrode.

[0025] Both ends of the circulating liquid channel 42 are provided with liquid ports 5. A valve is installed inside each liquid port 5. As Figure 2 shown, by providing the liquid ports 5, it is convenient to use a pipeline to input an external cooling medium into the circulating liquid channel 42 to perform heat exchange work.

[0026] The tensioning component 8 includes a conical cavity 81 provided inside the fixed cylinder 3. One end of the threaded column 7 penetrates into the conical cavity 81 and is fixedly connected with a conical block 83. A plurality of tensioning clips 82 are provided on the outer side of the conical block 83. The plurality of tensioning clips 82 are circumferentially distributed along the periphery of the conical block 83. The bottom of the tensioning clip 82 is connected with the connecting portion 2. Guide blocks 84 corresponding to the number of the tensioning clips 82 are symmetrically installed on the outer side of the conical block 83. A guide groove 85 corresponding to the guide block 84 is opened on the side of the tensioning clip 82 facing the conical block 83. The guide block 84 is located inside the guide groove 85. As Figure 3 、 Figure 4 shown, the threaded column 7 drives the conical block 83 at one end thereof to penetrate deep into the conical cavity 81. During this period, the conical block 83 will force the plurality of tensioning clips 82 on the outside to gradually expand outwards. Under the elastic potential energy of the tensioning clips 82, the two arc-shaped clamping plates 1 will be tightened towards the electrode, so that the conductive tile 62 and the electrode always maintain an interference fit. In this way, it adapts to the frequent lifting and lowering actions of the electrode, improves the clamping stability of the arc-shaped clamping plate 1 on the electrode, and by providing the guide blocks 84 and the guide grooves 85, on the one hand, the conical block 83 can move smoothly during the process of penetrating into the conical cavity 81, improving the structural stability, and on the other hand, restricting the rotation of the threaded column 7 to prevent the threaded column 7 from loosening and causing the clamping of the arc-shaped clamping plate 1 and the conductive component 6 on the electrode to fail.

[0027] The limiting component 9 includes a receiving cavity 91 provided at the top opening of the fixed cylinder 3. One end of the threaded column 7 penetrates to the outside of the receiving cavity 91 and is screwed with a fastening nut 92. As Figure 4As shown, by setting the fastening nut 92, one end of the threaded column 7 can drive the conical block 83 to penetrate deeper into the conical cavity 81 until the plurality of tension clips 82 come into contact with the inner wall of the conical cavity 81 and cannot expand any further. When the electrode vibrates or shakes during the lifting and lowering process, under the action of the plurality of tension clips 82, the two arc-shaped clamping plates 1 tightly approach the electrode, and the clamping stability of the electrode is better.

[0028] A spring gasket 10 is provided between the fastening nut 92 and the fixed cylinder 3. The spring gasket 10 is in contact with the fastening nut 92 and the fixed cylinder 3 respectively, as Figure 4 shown. By setting the spring gasket 10, it can effectively prevent the fastening nut 92 from loosening due to reasons such as vibration and movement. By applying an external force when installing the fastening nut 92, an elastic reaction force is generated to prevent the fastening nut 92 from loosening.

[0029] Working principle: First, the staff clamps and installs the electrode from the outside through the two arc-shaped clamping plates 1. After the clamping is completed, the conductive component 6 is in interference fit with the electrode to supply power to the electrode in a contact conduction manner. Then, the cooling component 4 is used to quickly cool the conductive component 6, thereby reducing the temperature of the electrode to avoid thermal oxidation, which is beneficial to improving the service life of the electrode. When the electrode vibrates or shakes during the lifting and lowering process, through the cooperation of the tension component 8 and the limiting component 9, the two arc-shaped clamping plates 1 are driven to tighten towards the electrode, so that the conductive tile 62 and the electrode always maintain an interference fit, thus adapting to the frequent lifting and lowering actions of the electrode, and effectively preventing the electrode clamping failure caused by the loosening of the threaded column 7 and the fastening nut 92, improving the clamping stability.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrode holder, comprising an arc-shaped clamping plate (1), characterized in that, There are two arc-shaped splints (1) which are mirror-symmetrically arranged, and further include: A conductive component (6) arranged on the inner wall of the arc-shaped splint (1) for clamping the electrode. A cooling component (4) for increasing the cooling speed of the conductive component (6) is arranged on the outer side of the arc-shaped splint (1). Connection parts (2) are arranged at both ends of the arc-shaped splint (1), and a threaded column (7) is arranged between adjacent connection parts (2); A tensioning component (8) arranged at one end of the threaded column (7) for strengthening the clamping strength of the arc-shaped splint (1). A fixing cylinder (3) is vertically installed on the outer side of the connection part (2), and a limiting component (9) for preventing the tensioning component (8) from detaching from the connection part (2) is arranged inside the fixing cylinder (3) located below.

2. The electrode holder according to claim 1, wherein: The conductive component (6) includes a positioning groove (61) arranged on the inner wall of the arc-shaped splint (1). A conductive tile (62) adapted to it is arranged inside the positioning groove (61), and the conductive tile (62) is connected to the inner wall of the positioning groove (61) by bolts.

3. An electrode holder according to claim 1, characterized in that: The cooling component (4) includes a boss (41) arranged on the outer side of the arc-shaped splint (1). A circulating liquid channel (42) is opened inside the boss (41), and the circulating liquid channel (42) is designed in a snake shape.

4. An electrode holder according to claim 3, characterized in that: Both ends of the circulating liquid channel (42) are provided with liquid ports (5), and a valve is installed inside each liquid port (5).

5. An electrode holder according to claim 1, characterized in that: The tensioning component (8) includes a conical cavity (81) arranged inside the fixing cylinder (3). One end of the threaded column (7) penetrates into the conical cavity (81) and is fixedly connected with a conical block (83). A plurality of tensioning clips (82) are arranged on the outer side of the conical block (83), and the plurality of tensioning clips (82) are circumferentially distributed around the conical block (83). The bottom of the tensioning clip (82) is connected to the connection part (2). Guide blocks (84) corresponding to the number of tensioning clips (82) are symmetrically installed on the outer side of the conical block (83). A guide groove (85) corresponding to the guide block (84) is opened on the side of the tensioning clip (82) facing the conical block (83), and the guide block (84) is located inside the guide groove (85).

6. The electrode holder according to claim 1, characterized in that: The limiting component (9) includes a receiving cavity (91) arranged at the top opening of the fixing cylinder (3). One end of the threaded column (7) penetrates to the outside of the receiving cavity (91) and is screwed with a fastening nut (92).

7. An electrode holder according to claim 6, characterized in that: A spring washer (10) is arranged between the fastening nut (92) and the fixing cylinder (3), and the spring washer (10) is in contact with the fastening nut (92) and the fixing cylinder (3) respectively.

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