Novel high-voltage fuse
Through the structural design of the new high-voltage fuse, safe disconnection and convenient replacement are achieved in the event of a high-voltage fuse failure. This solves the problems of obvious disconnection points and poor contact in traditional high-voltage fuses, and improves the recovery efficiency and operational stability of the power system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-23
- Publication Date
- 2026-03-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional high-voltage fuses are prone to detachment of the fuse element when they blow, creating a noticeable break point that affects the power system's recovery efficiency. Furthermore, poor contact is likely to occur at the connection between the fuse element and the device, leading to unstable equipment operation.
A novel high-voltage fuse was designed. Through the combination of an insulating operating rod, a threaded connecting ring, a limiting slide bar, and a buffer spring, in the event of a high-voltage fuse failure, after the conductive disc is disconnected, the threaded connecting ring gradually approaches and disengages, the annular rubber pad causes the entire structure to fall, the buffer spring absorbs the impact, and a stable connection is ensured by a side pull handle and a compression spring when replacing the fuse element.
It improves the safety and replacement efficiency of fuse operation, avoids equipment instability caused by poor contact, enhances the durability and ease of maintenance of the device, and ensures the stable operation of the power system.
Smart Images
Figure CN121662677A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fuse technology, specifically a novel high-voltage fuse. Background Technology
[0002] A high-voltage fuse is a switching device that operates at voltage levels of 3kV and above. When the current exceeds a specified value for a certain period of time, the fuse element melts due to the heat generated by the fuse itself, thus breaking the circuit. It is a controllable weak link artificially set in the power system and is mainly used for short-circuit protection. Some fuses can also be used for overload protection.
[0003] In the prior art, drop-out high-voltage fuses cause the fuse element to detach when they blow, thus creating a clear break point in the circuit, which makes it easy for staff to quickly identify the fault location. However, this design also has certain drawbacks. Replacing the fuse element of a traditional high-voltage fuse takes a long time, affecting the power system's restoration efficiency. Furthermore, poor contact is prone to occur at the connection between the fuse element and the device, leading to unstable equipment operation. Therefore, this invention provides a novel high-voltage fuse. Summary of the Invention
[0004] The purpose of this invention is to provide a novel high-voltage fuse to solve the problems mentioned in the background art.
[0005] The technical solution of this invention is: a novel high-voltage fuse, comprising an insulating operating rod, two mounting outer cylinders, a fuse outer cylinder rotatably connected between the two mounting outer cylinders, two threaded connecting rings threadedly connected to the inner side of the fuse outer cylinder, a conductive disc fixedly connected to the inner side of the threaded connecting rings, a fuse post fixedly connected between the two conductive discs, a limiting slide bar fixedly connected to the inner side of the mounting outer cylinder, four sliding grooves that mate with the limiting slide bar being opened on the outer side of the threaded connecting rings, two connecting side posts fixedly connected to the outer side of the insulating operating rod, a connecting side plate fixedly connected to the bottom of the connecting side posts, a conductive post installed on the inner side of the connecting side plate, an insertion hole being opened on the adjacent side of the two conductive posts, a conductive plug fixedly connected to the side of the two conductive discs away from each other, the conductive plug engaging with the inner side of the insertion hole, a protective outer cylinder fixedly connected to the outer side of the fuse outer cylinder, a gravity slider slidably engaging with the inner side of the protective outer cylinder, a buffer spring installed on the inner side of the protective outer cylinder, and an annular rubber fixedly connected to the end of the gravity slider away from the buffer spring. A connecting limiting ring is installed between the two outer cylinders, and the protective outer cylinder is slidably engaged with the inner side of the connecting limiting ring. In use: After the device is installed, in the event of a high-voltage fuse failure, the fuse rod will melt first, completely disconnecting the electrical connection between the two conductive discs. Under the gravity of the gravity slider, the annular rubber pad begins to move downwards. This action drives the gravity slider and the protective outer cylinder to rotate. Subsequently, the fuse outer cylinder is also rotated. The threaded connecting ring, due to the mechanical limiting effect of the limiting slide, cannot rotate on its own. Through the threaded transmission mechanism of the fuse outer cylinder, the threaded connecting ring slides along the limiting slide, causing the two threaded connecting rings to gradually approach each other. This process further promotes the two conductive discs to approach each other until the threaded connecting ring is completely disengaged from the limiting slide. Simultaneously, the conductive plug also disengages from the conductive post. Finally, the annular rubber pad pulls the entire internal structure of the fuse outer cylinder down. To avoid damage caused by the impact, a buffer spring is specially designed in the device for cushioning and absorption, thereby significantly improving the overall operational safety.
[0006] Preferably, a conductive connecting plate is fixedly connected to the adjacent, farthest sides of the two conductive posts. One conductive post is fixedly connected to the connecting side plate, and the other conductive post is slidably engaged with the connecting side plate. A protective outer ring is fixedly connected to the outer side of the connecting side plate, and a sealing side ring is fixedly connected to the outer side of the conductive posts. An inner sliding shaft is fixedly connected to one side of one of the sealing side rings. A compression spring is movably sleeved on the outer side of the inner sliding shaft. The inner sliding shaft is slidably engaged with the inner side of the connecting side plate. The compression spring is located inside the protective outer ring, and both ends of the compression spring are fixedly connected to the sealing side ring and the connecting side plate, respectively. A synchronization ring is fixedly connected to the end of the inner sliding shaft away from the sealing side ring. A side pull handle is fixedly connected to one side of the inner sliding shaft. In use: When the device needs to replace the fuse rod after it has melted, first manually pull the side pull handle to move the sealing side ring and the mounting outer cylinder as a whole, thus separating the two mounting outer cylinders and creating the necessary space for the replacement operation. Next, accurately place the new fuse outer cylinder between the two mounting outer cylinders and raise the annular rubber pad to provide gravity during melting. Then, ensure that the threaded connecting ring and the limiting slide are correctly engaged to form a stable connection. Finally, use an auxiliary tool to squeeze the spring to apply thrust, making the two mounting outer cylinders and the fuse outer cylinder fit tightly together, ensuring a secure and correct installation, thus smoothly completing the entire replacement process.
[0007] This invention provides a novel high-voltage fuse with the following improvements and advantages compared to the prior art: Firstly, the novel high-voltage fuse described in this invention, once installed, will cause the fuse column to melt first in the event of a high-voltage fuse failure, thus completely disconnecting the electrical connection between the two conductive discs. Under the gravity of the gravity slider, the annular rubber pad begins to move downwards. This action drives the gravity slider and the protective outer cylinder to rotate. Subsequently, the fuse outer cylinder is also driven to rotate. However, the threaded connecting ring cannot rotate on its own due to the mechanical limiting effect of the limiting slide. Through the threaded transmission mechanism of the fuse outer cylinder, the threaded connecting ring slides along the limiting slide, causing the two threaded connecting rings to gradually approach each other. This process further promotes the two conductive discs to approach each other until the threaded connecting ring is completely separated from the limiting slide. At the same time, the conductive plug also separates from the conductive column. Finally, the annular rubber pad pulls the entire internal structure of the fuse outer cylinder to fall. To avoid damage caused by the impact, a buffer spring is specially set in the device for buffering and absorption, thereby significantly improving the safety of the overall operation. Secondly, regarding the novel high-voltage fuse described in this invention, when the fuse rod needs to be replaced after the device has blown, firstly, by manually pulling the side handle, the sealing side ring and the mounting outer cylinder are moved as a whole, thereby separating the two mounting outer cylinders and creating the necessary space for the replacement operation. Next, the new fuse outer cylinder is precisely placed between the two mounting outer cylinders, and the annular rubber pad is raised to provide gravity during the fuse blowing. After that, ensure that the threaded connecting ring and the limiting slide are correctly engaged to form a stable connection. Finally, with the help of auxiliary tools, the spring is squeezed to apply a pushing force, so that the two mounting outer cylinders and the fuse outer cylinder fit tightly together, ensuring that the installation is firm and correct, thereby successfully completing the entire replacement process. In summary, the novel high-voltage fuse described in this invention not only solves the problem of long replacement times when replacing fuse elements in traditional high-voltage fuses, but also effectively avoids equipment instability caused by poor contact. The device has a reasonable structural design, is easy to operate, and can significantly improve the restoration efficiency of the power system. It also ensures the safety and reliability of the overall structure during the fusing process. Furthermore, by optimizing the connection methods between components, the durability and ease of maintenance of the device are further enhanced, providing a strong guarantee for the stable operation of high-voltage power systems. Attached Figure Description
[0008] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the mounting outer cylinder structure of the present invention; Figure 3 This is a schematic diagram of the fusible outer cylinder structure of the present invention; Figure 4 This is a schematic diagram of the fuse column structure of the present invention; Figure 5 This is a schematic diagram of the annular rubber pad structure of the present invention; Figure 6 This is a schematic diagram of the conductive pillar structure of the present invention; Figure 7 This is a schematic diagram of the inner sliding shaft structure of the present invention.
[0009] Explanation of reference numerals in the attached figures: 1. Insulated control lever; 2. Mounting outer cylinder; 3. Connecting limit ring; 4. Fusible outer cylinder; 5. Threaded connecting ring; 6. Annular rubber pad; 7. Conductive disc; 8. Conductive plug; 9. Fusible post; 10. Protective outer cylinder; 11. Gravity slider; 12. Buffer spring; 13. Connecting side post; 14. Connecting side disc; 15. Conductive post; 16. Conductive connecting plate; 17. Protective outer ring; 18. Inner sliding shaft; 19. Sealing side ring; 20. Compression spring; 21. Synchronization ring; 22. Side pull handle; 23. Limiting slide bar. Detailed Implementation
[0010] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0011] This invention provides a novel high-voltage fuse through improvements. The technical solution of this invention is as follows: like Figures 1-7 As shown, a novel high-voltage fuse includes an insulating operating rod 1, two mounting outer cylinders 2, and a fuse outer cylinder 4 rotatably connected between the two mounting outer cylinders 2. Two threaded connecting rings 5 are threadedly connected to the inner side of the fuse outer cylinder 4. Conductive disks 7 are fixedly connected to the inner side of the threaded connecting rings 5. A fuse pin 9 is fixedly connected between the two conductive disks 7. A limiting slide bar 23 is fixedly connected to the inner side of the mounting outer cylinder 2. Four grooves that mate with the limiting slide bar 23 are formed on the outer side of the threaded connecting rings 5. Two connecting side posts 13 are fixedly connected to the outer side of the insulating operating rod 1. The bottom of the 3 is fixedly connected to a connecting side plate 14. A conductive post 15 is installed on the inner side of the connecting side plate 14. An insertion hole is opened on the adjacent side of the two conductive posts 15. A conductive plug 8 is fixedly connected to the side of the two conductive plates 7 that is away from each other. The conductive plug 8 is snapped into the inner side of the insertion hole. A protective outer cylinder 10 is fixedly connected to the outer side of the fuse outer cylinder 4. A gravity slider 11 is slidably snapped into the inner side of the protective outer cylinder 10. A buffer spring 12 is installed on the inner side of the protective outer cylinder 10. An annular rubber pad 6 is fixedly connected to the end of the gravity slider 11 away from the buffer spring 12. The two mounting outer cylinders 2... A connecting limiting ring 3 is installed between the components, and the protective outer cylinder 10 is slidably engaged with the inner side of the connecting limiting ring 3. In use: After the device is installed, in the event of a high-voltage fuse failure, the fuse rod 9 will melt first, completely disconnecting the electrical connection between the two conductive discs 7. Under the gravity of the gravity slider 11, the annular rubber pad 6 begins to move downwards. This action drives the gravity slider 11 and the protective outer cylinder 10 to rotate. Subsequently, the fuse outer cylinder 4 is also driven to rotate, while the threaded connecting ring 5 remains stationary due to the mechanical limiting effect of the limiting slide bar 23. The device rotates on its own, and through the threaded transmission mechanism of the outer cylinder 4, the threaded connecting ring 5 slides along the limiting slide bar 23, causing the two threaded connecting rings 5 to gradually approach each other. This process further causes the two conductive discs 7 to approach each other until the threaded connecting ring 5 is completely disengaged from the limiting slide bar 23. At the same time, the conductive plug 8 also disengages from the conductive post 15. Finally, the annular rubber pad 6 pulls the entire internal structure of the outer cylinder 4 to fall. To avoid damage caused by the impact, a buffer spring 12 is specially set in the device to buffer and absorb the impact, thereby significantly improving the safety of the overall operation.
[0012] Furthermore, a conductive connecting plate 16 is fixedly connected to the adjacent, far-away sides of the two conductive posts 15. One conductive post 15 is fixedly connected to the connecting side plate 14, and the other conductive post 15 is slidably engaged with the connecting side plate 14. A protective outer ring 17 is fixedly connected to the outer side of the connecting side plate 14, and a sealing side ring 19 is fixedly fixed to the outer side of the conductive post 15. An inner sliding shaft 18 is fixedly connected to one side of one of the sealing side rings 19. A compression spring 20 is movably sleeved on the outer side of the inner sliding shaft 18. The inner sliding shaft 18 is slidably engaged with the inner side of the connecting side plate 14. The compression spring 20 is located inside the protective outer ring 17, and both ends of the compression spring 20 are fixedly connected to the sealing side ring 19 and the connecting side plate 14, respectively. A synchronizing ring 21 is fixedly connected to the end of the inner sliding shaft 18 away from the sealing side ring 19. A side pull handle 22 is fixedly connected to the side of the step ring 21 away from the inner sliding shaft 18. In use: when the device needs to replace the fuse column 9 after it has melted, first, manually pull the side pull handle 22 to move the sealing side ring 19 and the mounting outer cylinder 2 as a whole, thereby separating the two mounting outer cylinders 2 and creating the necessary space for the replacement operation. Then, accurately place the new fuse outer cylinder 4 between the two mounting outer cylinders 2 and raise the annular rubber pad 6 to provide gravity when melting. After that, ensure that the threaded connecting ring 5 and the limiting slide 23 are correctly engaged to form a stable connection. Finally, use an auxiliary tool to squeeze the spring 20 to apply a pushing force so that the two mounting outer cylinders 2 and the fuse outer cylinder 4 fit tightly together, ensuring that the installation is firm and correct, thereby successfully completing the entire replacement process.
[0013] Working Principle: In use: After the device is installed, in the event of a high-voltage fuse failure, the fuse post 9 will melt first, completely disconnecting the electrical connection between the two conductive discs 7. Under the gravity of the gravity slider 11, the annular rubber pad 6 begins to move downwards. This action drives the gravity slider 11 and the protective outer cylinder 10 to rotate. Subsequently, the fuse outer cylinder 4 is also driven to rotate. The threaded connecting ring 5 cannot rotate on its own due to the mechanical limitation of the limiting slide bar 23. Through the threaded transmission mechanism of the fuse outer cylinder 4, the threaded connecting ring 5 slides along the limiting slide bar 23, causing the two threaded connecting rings 5 to gradually approach each other. This process further promotes the two conductive discs 7 to approach each other until the threaded connecting ring 5 is completely disengaged from the limiting slide bar 23. At the same time, the conductive plug 8 also disengages from the conductive post 15. Finally, the annular rubber pad 6 is pulled away. When the entire internal structure of the moving fuse outer cylinder 4 falls off, a buffer spring 12 is specially set in the device to absorb the impact and avoid damage, thereby significantly improving the safety of the overall operation. When the device needs to replace the fuse column 9 after the fuse is broken, firstly, manually pull the side handle 22 to move the sealing side ring 19 and the mounting outer cylinder 2 as a whole, thereby separating the two mounting outer cylinders 2 and creating the necessary space for the replacement operation. Then, accurately place the new fuse outer cylinder 4 between the two mounting outer cylinders 2 and raise the annular rubber pad 6 to provide gravity when the fuse is broken. After that, ensure that the threaded connecting ring 5 and the limiting slide 23 are correctly engaged to form a stable connection. Finally, use an auxiliary tool to squeeze the spring 20 to apply a pushing force so that the two mounting outer cylinders 2 and the fuse outer cylinder 4 fit tightly together, ensuring that the installation is firm and correct, thereby successfully completing the entire replacement process.
[0014] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A novel high-voltage fuse, comprising an insulating operating rod (1) and two mounting outer cylinders (2), characterized in that: A fusible outer cylinder (4) is rotatably connected between the two mounting outer cylinders (2). Two threaded connecting rings (5) are threadedly connected to the inner side of the fusible outer cylinder (4). A conductive disk (7) is fixedly connected to the inner side of the threaded connecting ring (5). A fusible column (9) is fixedly connected between the two conductive disks (7). A limiting slide (23) is fixedly connected to the inner side of the mounting outer cylinder (2). Four sliding grooves that fit with the limiting slide (23) are opened on the outer side of the threaded connecting ring (5).
2. The novel high-voltage fuse according to claim 1, characterized in that: Two connecting side posts (13) are fixedly connected to the outside of the insulating control lever (1). A connecting side plate (14) is fixedly connected to the bottom of the connecting side post (13). A conductive post (15) is installed on the inner side of the connecting side plate (14). A socket is opened on the adjacent side of the two conductive posts (15). A conductive plug (8) is fixedly connected to the side of the two conductive plates (7) that are far apart from each other. The conductive plug (8) is snapped into the inner side of the socket.
3. A novel high-voltage fuse according to claim 2, characterized in that: The outer side of the fuse outer cylinder (4) is fixedly connected to a protective outer cylinder (10), the inner side of the protective outer cylinder (10) is slidably engaged with a gravity slider (11), the inner side of the protective outer cylinder (10) is equipped with a buffer spring (12), and the end of the gravity slider (11) away from the buffer spring (12) is fixedly connected to an annular rubber pad (6).
4. A novel high-voltage fuse according to claim 3, characterized in that: A connecting limiting ring (3) is installed between the two mounting outer cylinders (2), and the protective outer cylinder (10) is slidably engaged with the inner side of the connecting limiting ring (3).
5. A novel high-voltage fuse according to claim 4, characterized in that: A conductive connecting plate (16) is fixedly connected to the two adjacent and far sides of the conductive posts (15). One conductive post (15) is fixedly connected to the connecting side plate (14), and the other conductive post (15) is slidably engaged with the connecting side plate (14).
6. A novel high-voltage fuse according to claim 5, characterized in that: A protective outer ring (17) is fixedly connected to the outer side of the connecting side plate (14), and a sealing side ring (19) is fixedly connected to the outer side of the conductive post (15). An inner sliding shaft (18) is fixedly connected to one side of a sealing side ring (19). A compression spring (20) is movably sleeved on the outer side of the inner sliding shaft (18). The inner sliding shaft (18) is slidably engaged with the inner side of the connecting side plate (14). The compression spring (20) is located inside the protective outer ring (17). The two ends of the compression spring (20) are fixedly connected to the sealing side ring (19) and the connecting side plate (14) respectively.
7. A novel high-voltage fuse according to claim 6, characterized in that: The inner slide shaft (18) is fixedly connected to a synchronization ring (21) at one end away from the sealing side ring (19), and a side handle (22) is fixedly connected to the side of the synchronization ring (21) away from the inner slide shaft (18).