Sealing device for preventing leakage of graphitized electrode cooling hole

Abstract

The utility model discloses a sealing device for preventing leakage of a graphitized electrode cooling hole, and relates to the technical field of graphitized electrodes. The problems that the volume density of an existing graphite electrode does not reach the standard in the dipping and roasting treatment process, electrode cooling water leakage hidden danger exists, and the service life of the graphite electrode is affected are solved. According to the sealing device provided by the invention, the resin adhesive is uniformly pressed between the outer surface of the cooling water pipe and the inner wall of the cooling water hole in the graphite electrode through pressure, and the cooling water pipe and the cooling water hole in the graphite electrode are sealed by drying the resin adhesive; two treatment processes of dipping and roasting the graphite electrode in the prior art are actually replaced, so that the volume density of the graphite electrode is ensured, the cooling water pipe is mounted in the cooling water hole in the graphite electrode, and the outer surface of the cooling water pipe and the inner wall of the cooling water hole of the electrode are sealed through the resin adhesive, so that the cooling effect is improved. The hidden danger of leakage of electrode cooling water is avoided, and the service life of the graphite electrode is prolonged. The graphite electrode is suitable for the field of graphite electrodes.

Description

Technical Field

[0001] This utility model relates to the field of graphitized electrode technology, specifically to a sealing device for preventing leakage of cooling holes in graphitized electrodes. Background Technology

[0002] Graphite electrodes require impregnation during processing, meaning they are thoroughly immersed in a liquid in an impregnation tank. The end face of the graphite electrode typically has a connector hole for connecting to an electrode connector and then to other graphite electrodes. This connector hole has threads; if the impregnation liquid enters the connector hole, it will remain in the threads and be difficult to remove completely, affecting the conductivity of the graphite electrode and severely impacting its performance and operational stability. Therefore, the connector hole of the graphite electrode should be sealed during impregnation to prevent the impregnation liquid from entering.

[0003] In summary, during the impregnation and calcination processes, existing graphite electrodes often fail to achieve the required density, leading to potential leakage of cooling water and severely impacting their lifespan. Utility Model Content

[0004] This invention addresses the problem that existing graphite electrodes, during the impregnation and calcination processes, fail to achieve adequate density, leading to potential leakage of cooling water and severely impacting their lifespan. It proposes a sealing device to prevent leakage through the cooling holes of graphitized electrodes.

[0005] This utility model discloses a sealing device for preventing leakage of cooling holes in graphitized electrodes. The device comprises a sealing plate 1, a first connecting rod 2, a left clamp 3, a right clamp 4, a high-pressure air pump 8, an air pipe 9, a second connecting rod 10, an air nozzle 12, an L-shaped drain pipe 13, and a ball valve 14.

[0006] One end of the upper surface of the sealing plate 1 is fixedly connected to the middle of the outer circumference of the left clamp 3 via the first connecting rod 2, and the other end of the upper surface of the sealing plate 1 is fixedly connected to the middle of the outer circumference of the right clamp 4 via the second connecting rod 10. Two through holes are machined on the upper surface of the sealing plate 1. The bottom of the vertical section of the L-shaped drain pipe 13 passes through one of the through holes on the upper surface of the sealing plate 1. A ball valve 14 is provided on the horizontal section of the L-shaped drain pipe 13. An air nozzle 12 is provided inside the other through hole on the upper surface of the sealing plate 1. The input end of the air nozzle 12 is connected to the output end of the high-pressure air pump 8 via the air pipe 9.

[0007] Furthermore, a sealing strip 11 is provided on the outer circumferential surface of the sealing plate 1;

[0008] Furthermore, the two ends of the left clamp 3 and the right clamp 4 are respectively connected by a set of bolt and nut assemblies;

[0009] Furthermore, the outer surface of the air nozzle 12 is welded and fixed to the inner wall of the through hole on the upper surface of the sealing plate 1;

[0010] Furthermore, the sealing plate 1, the first connecting rod 2, the left clamp 3, the right clamp 4, and the second connecting rod 10 are integrally formed;

[0011] Furthermore, a sealing ring is provided between the outer surface of the vertical section of the L-shaped drain pipe 13 and the inner wall of the through hole on the upper surface of the sealing plate 1;

[0012] Furthermore, a layer of anti-slip adhesive is provided on the inner arc of the left clamp 3 and the right clamp 4.

[0013] Furthermore, a pressure gauge is provided at the center of the sealing plate 1, and the detection end of the pressure gauge passes through the sealing plate 1.

[0014] Furthermore, during use, first insert one end of the cooling water pipe 5 into the sealing plug 7, then insert the cooling water pipe 5 with the sealing plug 7 installed into the interior of the cooling water hole on the graphite electrode 15, and the end of the cooling water pipe 5 with the sealing plug 7 passes through the cooling water hole on the graphite electrode 15. A sealing ring plug 6 is provided on the outer end face of the cooling water hole on the graphite electrode 15.

[0015] Then, resin is injected into the electrode hole of the graphite electrode 15, with the resin level inside the electrode hole higher than the cooling water hole on the graphite electrode 15. The sealing plate 1 is then inserted into the countersunk hole at the top of the electrode hole on the graphite electrode 15. One end of the upper surface of the sealing plate 1 is fixedly connected to the center of the outer circumference of the left clamp 3 via connecting rod 2, and the other end of the upper surface of the sealing plate 1 is fixedly connected to the center of the outer circumference of the right clamp 4 via connecting rod 10. The two ends of the left clamp 3 and the right clamp 4 are connected by a set of bolt and nut assemblies, locking them in place. The bolt and nut assembly fixes the left clamp 3 and right clamp 4 to the outer surface of the graphite electrode 15 and fixes the axial position of the sealing plate 1 and the graphite electrode 15. The operator adjusts the ball valve 14 to the closed state and starts the high-pressure air pump 8. The high-pressure gas generated by the high-pressure air pump 8 is continuously input into the electrode hole of the graphite electrode 15 through the air pipe 9 and the air nozzle 12. The compressed air is 0.5MPa and the pressure is maintained for 1 hour. During this hour, the resin will flow evenly between the outer surface of the cooling water pipe 5 and the inner wall of the cooling water hole on the graphite electrode 15 under pressure.

[0016] Finally, open the ball valve 14 to discharge the excess resin glue through the L-shaped drain pipe 13 to the outside of the electrode hole of the graphite electrode 15 for recycling. Then, remove the device and wait for the resin glue inside the electrode hole to dry. This achieves the sealing between the outer surface of the cooling water pipe 5 and the inner wall of the cooling water hole on the graphite electrode 15. After completing the sealing operation, remove the sealing ring plug 6 and the sealing plug 7.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] This invention overcomes the shortcomings of existing technologies by injecting resin adhesive into the electrode hole of the graphite electrode, ensuring the resin adhesive level inside the electrode hole is higher than the cooling water holes on the graphite electrode. Then, a sealing plate from the device is embedded into the countersunk hole at the top of the electrode hole on the graphite electrode. Two sets of bolt and nut assemblies are then tightened to fix the left and right clamps to the outer surface of the graphite electrode, thus fixing the axial position of the sealing plate relative to the graphite electrode. The operator adjusts the ball valve to the closed position and starts the high-pressure air pump. The high-pressure air generated by the pump is continuously injected into the electrode hole of the graphite electrode through the air pipe and nozzle. The compressed air pressure is 0.5 MPa, and the pressure is maintained for 1 hour. During this hour, the resin adhesive flows evenly between the outer surface of the cooling water pipe and the inner wall of the cooling water holes on the graphite electrode under pressure. Finally... Open the ball valve to drain excess resin glue through the L-shaped drain pipe to the outside of the graphite electrode hole, then remove the device and wait for the resin glue inside the electrode hole to dry. The sealing device provided in this application uses pressure to evenly press resin glue into the space between the outer surface of the cooling water pipe and the inner wall of the cooling water hole on the graphite electrode. Through the drying of the resin glue, a seal is formed between the cooling water pipe and the cooling water hole on the graphite electrode. This effectively replaces the two processing steps of impregnation and calcination of the graphite electrode in the prior art, thereby ensuring the volume density of the graphite electrode. Furthermore, by installing a cooling water pipe inside the cooling water hole on the graphite electrode and applying pressure to evenly inject resin glue between the outer surface of the cooling water pipe and the inner wall of the electrode cooling water hole, a seal is achieved, avoiding the risk of leakage of electrode cooling water and greatly extending the service life of the graphite electrode. Attached Figure Description

[0019] Figure 1 This is a front sectional view of a sealing device for preventing leakage of cooling holes in graphitized electrodes, as described in this utility model. Detailed Implementation

[0020] Specific implementation method one: Combining Figure 1 This embodiment describes a sealing device for preventing leakage of cooling holes in graphitized electrodes. The device comprises a sealing plate 1, a first connecting rod 2, a left clamp 3, a right clamp 4, a high-pressure air pump 8, an air pipe 9, a second connecting rod 10, an air nozzle 12, an L-shaped drain pipe 13, and a ball valve 14.

[0021] One end of the upper surface of the sealing plate 1 is fixedly connected to the middle of the outer circumference of the left clamp 3 via the first connecting rod 2, and the other end of the upper surface of the sealing plate 1 is fixedly connected to the middle of the outer circumference of the right clamp 4 via the second connecting rod 10. Two through holes are machined on the upper surface of the sealing plate 1. The bottom of the vertical section of the L-shaped drain pipe 13 passes through one of the through holes on the upper surface of the sealing plate 1. A ball valve 14 is provided on the horizontal section of the L-shaped drain pipe 13. An air nozzle 12 is provided inside the other through hole on the upper surface of the sealing plate 1. The input end of the air nozzle 12 is connected to the output end of the high-pressure air pump 8 via the air pipe 9.

[0022] In this specific embodiment, when in use, first insert one end of the cooling water pipe 5 into the sealing plug 7, then insert the cooling water pipe 5 with the sealing plug 7 installed into the interior of the cooling water hole on the graphite electrode 15, and the end of the cooling water pipe 5 with the sealing plug 7 passes through the cooling water hole on the graphite electrode 15. A sealing ring plug 6 is provided on the outer end face of the cooling water hole on the graphite electrode 15.

[0023] Then, resin is injected into the electrode hole of the graphite electrode 15, with the resin level inside the electrode hole higher than the cooling water hole on the graphite electrode 15. The sealing plate 1 is then inserted into the countersunk hole at the top of the electrode hole on the graphite electrode 15. One end of the upper surface of the sealing plate 1 is fixedly connected to the center of the outer circumference of the left clamp 3 via connecting rod 2, and the other end of the upper surface of the sealing plate 1 is fixedly connected to the center of the outer circumference of the right clamp 4 via connecting rod 10. The two ends of the left clamp 3 and the right clamp 4 are connected by a set of bolt and nut assemblies, locking them in place. The bolt and nut assembly fixes the left clamp 3 and right clamp 4 to the outer surface of the graphite electrode 15 and fixes the axial position of the sealing plate 1 and the graphite electrode 15. The operator adjusts the ball valve 14 to the closed state and starts the high-pressure air pump 8. The high-pressure gas generated by the high-pressure air pump 8 is continuously input into the electrode hole of the graphite electrode 15 through the air pipe 9 and the air nozzle 12. The compressed air is 0.5MPa and the pressure is maintained for 1 hour. During this hour, the resin will flow evenly between the outer surface of the cooling water pipe 5 and the inner wall of the cooling water hole on the graphite electrode 15 under pressure.

[0024] Finally, open the ball valve 14 to discharge the excess resin glue through the L-shaped drain pipe 13 to the outside of the electrode hole of the graphite electrode 15 for recycling. Then, remove the device and wait for the resin glue inside the electrode hole to dry. This achieves the sealing between the outer surface of the cooling water pipe 5 and the inner wall of the cooling water hole on the graphite electrode 15. After completing the sealing operation, remove the sealing ring plug 6 and the sealing plug 7.

[0025] Specific Implementation Method Two: Combining Figure 1This embodiment is a further limitation of the sealing device described in Specific Embodiment 1. The sealing device for preventing leakage of cooling holes of graphitized electrodes described in this embodiment has a sealing strip 11 on the outer circumferential surface of the sealing plate 1.

[0026] Specific implementation method three: Combining Figure 1 This embodiment further defines the sealing device described in Specific Embodiment 1. In this embodiment, a sealing device for preventing leakage of cooling holes in graphitized electrodes is provided, wherein the two ends of the left clamp 3 and the right clamp 4 are respectively connected by a set of bolt and nut assemblies.

[0027] Specific implementation method four: Combination Figure 1 This embodiment further defines the sealing device described in Specific Embodiment 1. In this embodiment, a sealing device for preventing leakage of cooling holes in graphitized electrodes is provided, wherein the outer surface of the air nozzle 12 is welded and fixed to the inner wall of the through hole on the upper surface of the sealing plate 1.

[0028] Specific Implementation Method Five: Combining Figure 1 This embodiment further defines the sealing device described in Specific Embodiment 1. The sealing device for preventing leakage of cooling holes in graphitized electrodes described in this embodiment is an integrally formed sealing plate 1, first connecting rod 2, left clamp 3, right clamp 4 and second connecting rod 10.

[0029] Specific Implementation Method Six: Combination Figure 1 This embodiment further defines the sealing device described in Specific Embodiment 1. In this embodiment, a sealing device for preventing leakage of cooling holes in graphitized electrodes is provided with a sealing ring between the outer surface of the vertical section of the L-shaped drain pipe 13 and the inner wall of the through hole on the upper surface of the sealing plate 1.

[0030] Specific implementation method seven: Combining Figure 1 This embodiment further defines the sealing device described in Specific Embodiment 3. The sealing device for preventing leakage of cooling holes of graphitized electrodes described in this embodiment has a layer of anti-slip adhesive on the inner arc of the left clamp 3 and the right clamp 4.

[0031] In this specific embodiment, the left clamp 3 and the right clamp 4 are clamped to the outer surface of the graphite electrode 15 by two sets of bolt and nut assemblies. The clamp assemblies can be installed at a position relative to the height of the graphite electrode 15 to firmly embed the sealing plate 1 into the countersunk hole at the top of the electrode hole on the graphite electrode 15. When pressure is applied, the anti-slip rubber layer on the arc-shaped inner wall of the left clamp 3 and the right clamp 4 can prevent relative sliding between the clamp assembly and the outer surface of the graphite electrode 15, thereby ensuring that the sealing plate 1 is effectively embedded into the countersunk hole at the top of the electrode hole and preventing the sealing plate 1 from detaching from the electrode hole.

[0032] Specific implementation method eight: Combination Figure 1 This embodiment is a further limitation of the sealing device described in Specific Embodiment Six. The sealing device for preventing leakage of cooling holes of graphitized electrodes described in this embodiment has a pressure gauge at the center of the sealing plate 1, and the detection end of the pressure gauge passes through the sealing plate 1.

[0033] In this specific embodiment, a pressure gauge is provided at the center of the sealing plate 1, and the detection end of the pressure gauge passes through the sealing plate 1, so as to realize the monitoring of the pressure value inside the electrode hole on the graphite electrode 15 through the pressure gauge during the pressurization process.

[0034] Working principle

[0035] When in use, first insert one end of the cooling water pipe 5 into the sealing plug 7, then insert the cooling water pipe 5 with the sealing plug 7 installed into the cooling water hole on the graphite electrode 15, and the end of the cooling water pipe 5 with the sealing plug 7 passes through the cooling water hole on the graphite electrode 15. A sealing ring plug 6 is provided on the outer end face of the cooling water hole on the graphite electrode 15.

[0036] Then, resin is injected into the electrode hole of the graphite electrode 15, with the resin level inside the electrode hole higher than the cooling water hole on the graphite electrode 15. The sealing plate 1 is then inserted into the countersunk hole at the top of the electrode hole on the graphite electrode 15. One end of the upper surface of the sealing plate 1 is fixedly connected to the center of the outer circumference of the left clamp 3 via connecting rod 2, and the other end of the upper surface of the sealing plate 1 is fixedly connected to the center of the outer circumference of the right clamp 4 via connecting rod 10. The two ends of the left clamp 3 and the right clamp 4 are connected by a set of bolt and nut assemblies, locking them in place. The bolt and nut assembly fixes the left clamp 3 and right clamp 4 to the outer surface of the graphite electrode 15 and fixes the axial position of the sealing plate 1 and the graphite electrode 15. The operator adjusts the ball valve 14 to the closed state and starts the high-pressure air pump 8. The high-pressure gas generated by the high-pressure air pump 8 is continuously input into the electrode hole of the graphite electrode 15 through the air pipe 9 and the air nozzle 12. The compressed air is 0.5MPa and the pressure is maintained for 1 hour. During this hour, the resin will flow evenly between the outer surface of the cooling water pipe 5 and the inner wall of the cooling water hole on the graphite electrode 15 under pressure.

[0037] Finally, open the ball valve 14 to discharge the excess resin glue through the L-shaped drain pipe 13 to the outside of the electrode hole of the graphite electrode 15 for recycling. Then, remove the device and wait for the resin glue inside the electrode hole to dry. This achieves the sealing between the outer surface of the cooling water pipe 5 and the inner wall of the cooling water hole on the graphite electrode 15. After completing the sealing operation, remove the sealing ring plug 6 and the sealing plug 7.

Claims

1. A sealing device for preventing leakage of cooling holes in graphitized electrodes, characterized in that: It includes a sealing plate (1), a first connecting rod (2), a left clamp (3), a right clamp (4), a high-pressure air pump (8), an air pipe (9), a second connecting rod (10), an air nozzle (12), an L-shaped drain pipe (13), and a ball valve (14). One end of the upper surface of the sealing plate (1) is fixedly connected to the middle of the outer circumference of the left clamp (3) via the first connecting rod (2), and the other end of the upper surface of the sealing plate (1) is fixedly connected to the middle of the outer circumference of the right clamp (4) via the second connecting rod (10). Two through holes are machined on the upper surface of the sealing plate (1). The bottom of the vertical section of the L-shaped drain pipe (13) passes through one of the through holes on the upper surface of the sealing plate (1). A ball valve (14) is provided on the horizontal section of the L-shaped drain pipe (13). An air nozzle (12) is provided inside the other through hole on the upper surface of the sealing plate (1). The input end of the air nozzle (12) is connected to the output end of the high-pressure air pump (8) via the air pipe (9).

2. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 1, characterized in that: The sealing plate (1) is provided with a sealing strip (11) on its outer circumference.

3. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 1, characterized in that: The two ends of the left clamp (3) and the right clamp (4) are respectively connected by a set of bolt and nut assemblies.

4. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 1, characterized in that: The outer surface of the air nozzle (12) is welded and fixed to the inner wall of the through hole on the upper surface of the sealing plate (1).

5. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 1, characterized in that: The sealing plate (1), the first connecting rod (2), the left clamp (3), the right clamp (4) and the second connecting rod (10) are integrally set.

6. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 1, characterized in that: A sealing ring is provided between the outer surface of the vertical section of the L-shaped drain pipe (13) and the inner wall of the through hole on the upper surface of the sealing plate (1).

7. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 3, characterized in that: The inner arc of the left clamp (3) and the right clamp (4) is provided with a layer of anti-slip rubber.

8. A sealing device for preventing leakage of cooling holes in graphitized electrodes according to claim 6, characterized in that: A pressure gauge is provided at the center of the sealing plate (1), and the detection end of the pressure gauge passes through the sealing plate (1).

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