High-voltage fuse

Abstract

The utility model discloses high pressure fuse, relates to the field of fuse. The utility model discloses a base, the upper surface of base is equipped with two insulating columns, the upper end of insulating column sets up left fuse tube seat and right fuse tube seat respectively, installs the fuse tube between left fuse tube seat and right fuse tube seat, the both sides of fuse tube are equipped with the left fuse tube end and right fuse tube end of electrically conductive respectively, the exposed surface of left fuse tube end and right fuse tube end is equipped with high temperature discoloration ring, the utility model discloses a through, insulating column, left fuse tube seat, right fuse tube seat and insulating protective cover will fuse tube and outside isolation, improve the service life of fuse tube, simultaneously, the electrically conductive part of high pressure fuse is isolated with outside, improves the safety performance of high pressure fuse.

Description

Technical Field

[0001] This utility model relates to the field of fuses, specifically high-voltage fuses. Background Technology

[0002] High-voltage intelligent fuses are a new type of power protection device that combines traditional high-voltage fuses with modern electronic technology. They enable rapid and accurate disconnection of overcurrent and short-circuit faults in power systems, while also possessing functions such as fault detection, location, and isolation. The application of high-voltage intelligent fuses in power systems helps improve the safety and reliability of these systems. A high-voltage intelligent fuse mainly consists of the fuse body, electronic protection devices, and a communication module.

[0003] High-voltage fuses are the simplest protective electrical appliances, used to protect electrical equipment from damage caused by overload and short-circuit currents. Different types of high-voltage fuses, such as outdoor drop-out type and indoor type, are selected according to installation conditions and uses. In the use of traditional indoor high-voltage fuses, the high-voltage contact points of the high-voltage fuse are exposed, which can easily lead to electric shock hazards. At the same time, it is impossible to directly determine whether the high-voltage fuse is intact. In view of this, the inventors urgently need to design high-voltage fuses to improve their safety performance. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a high-voltage fuse to solve the technical problem of exposed high-voltage contact points.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage fuse, comprising a base, two insulating posts on the upper surface of the base, a left fuse holder and a right fuse holder respectively disposed at the upper end of the insulating posts, a fuse tube installed between the left and right fuse holders, conductive left and right fuse tube ends respectively disposed on both sides of the fuse tube, high-temperature color-changing rings disposed on the exposed surfaces of the left and right fuse tube ends, and the left and right sides of the left and right fuse holders respectively... An insulating retaining strip is provided. An insulating protective cover is installed on the upper surface of the left and right fuse holders. The surface of the insulating protective cover is provided with four slots that are adapted to the insulating retaining strips on both sides of the left and right fuse holders. The surface of the insulating protective cover is provided with four observation frames that are opposite to the position of the high-temperature color-changing ring. The circumferential surface of the right fuse tube end is provided with a metal external thread. The left fuse holder is provided with a metal spring inside. The right fuse holder is provided with a metal internal thread that is adapted to the metal external thread.

[0006] By adopting the above technical solution, the conductive structure of the high-voltage fuse is isolated from the outside world by using an insulating cover, the outside of the left fuse holder, and the outside of the right fuse holder, thereby reducing the electric shock rate and improving the safety performance of the high-voltage fuse.

[0007] Furthermore, the two sets of insulating posts on the upper surface of the base are symmetrically distributed along the center line of the surface, and the large and small insulators on the insulating posts are staggered, and the number of large and small insulators is adapted to the voltage of the high-voltage fuse.

[0008] By adopting the above technical solutions, the quantity and distribution of large and small insulators are controlled, thereby enhancing the insulation performance of the insulating columns. Based on the voltage of the high-voltage fuse, a suitable insulating column is selected to ensure the safety of the high-voltage fuse.

[0009] Furthermore, the left end of the fuse tube is inserted into the left fuse tube seat and deformed by the metal spring, while the right end of the fuse tube is threadedly connected to the right fuse tube seat.

[0010] By adopting the above technical solution, the left fuse tube end presses against the metal spring, causing the metal spring to deform, which facilitates the threaded connection between the right fuse tube end and the right fuse tube seat, reduces the difficulty of replacing the fuse tube, and improves maintenance efficiency.

[0011] Furthermore, the insulating protective cover is engaged with the left and right fuse holders, and the observation frame of the insulating protective cover is adapted to the position of the high-temperature color-changing ring.

[0012] By adopting the above technical solution, the insulating protective cover is connected by a snap-fit ​​mechanism, which improves the stability of the insulating protective cover. By observing the color change of the high-temperature color-changing ring through the observation frame, the condition of the fuse tube can be quickly determined, thus improving the maintenance efficiency of high-voltage fuses.

[0013] Furthermore, the left and right fuse tube ends are high-voltage conductors made of the same material, and the left and right fuse tube ends respectively abut against the tube wall of the fuse tube.

[0014] By adopting the above technical solution, the installation stability of the left and right fuse tube ends is increased. The left and right fuse tube ends use high-voltage conductors as conductive materials, which ensures the conductivity of the fuse tubes and increases the service life of the high-voltage fuse.

[0015] Furthermore, the inner sides of the left and right fuse holders are provided with high-voltage conductors that connect to the outside, and the outer surfaces of the left and right fuse holders are covered with high-voltage insulating material.

[0016] By adopting the above technical solution, the high-voltage conductors of the fuse tube and the left and right fuse tube seats are connected to the outside world. The high-voltage insulating material on the outer surface of the left and right fuse tube seats isolates the inside of the left and right fuse tube seats from the outside, thereby improving the safety performance of the high-voltage fuse.

[0017] Furthermore, the metal spring, the high-voltage conductor of the left fuse holder, and the high-voltage conductor of the right fuse holder are made of the same material, and one end of the metal spring is fixedly connected to one end of the high-voltage conductor of the left fuse holder.

[0018] By adopting the above technical solution, the conductivity of the metal spring is increased. By using the same material, the conductivity of the high-voltage fuse is guaranteed, thereby improving the working efficiency and service life of the high-voltage fuse.

[0019] In summary, the present invention has the following main advantages:

[0020] 1. This utility model isolates the fuse tube from the outside world through an insulating post, a left fuse tube seat, a right fuse tube seat, and an insulating protective cover. The outer surfaces of the insulating post, the left fuse tube seat, the right fuse tube seat, and the insulating protective cover use insulating materials compatible with high-voltage fuses, which improves the service life of the fuse tube. At the same time, it isolates the conductive parts of the high-voltage fuse from the outside world, improving the safety performance of the high-voltage fuse. The ends of the left and right fuse tubes are located inside the left and right fuse tube seats, respectively, reducing the contact area between the ends of the left and right fuse tubes and oxygen, thus improving their service life and ensuring the conductivity of the high-voltage fuse.

[0021] 2. This utility model features high-temperature color-changing rings on the outer sides of the left and right fuse tube ends, and four observation frames on the front and back of the insulating protective cover. Without removing the insulating protective cover, the color change of the high-temperature color-changing rings can be observed through the observation frames of the insulating protective cover, which can quickly and accurately determine the condition of the fuse tube, reducing the difficulty of high-voltage fuse maintenance and improving the maintenance efficiency of high-voltage fuses. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the exploded structure of the fuse tube of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the left and right fuse holders of this utility model.

[0026] In the diagram: 1. Base; 2. Insulating post; 3. Large insulator; 4. Small insulator; 5. Fuse tube; 6. Left fuse tube seat; 7. Left fuse tube end; 8. High-temperature color-changing ring; 9. Insulating strip; 10. Right fuse tube seat; 11. Insulating protective cover; 12. Slot; 13. Observation frame; 14. Metal external thread; 15. Metal spring; 16. Metal internal thread; 17. Right fuse tube end. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In this embodiment:

[0029] High-voltage fuses, such as Figure 1-4 As shown, the device includes a base 1. Two insulating posts 2 are provided on the upper surface of the base 1. A left fuse holder 6 and a right fuse holder 10 are respectively installed at the upper ends of the insulating posts 2. A fuse tube 5 is installed between the left and right fuse holders 6 and 10. Conductive left and right fuse ends 7 and 17 are respectively provided on both sides of the fuse tube 5. High-temperature color-changing rings 8 are provided on the exposed surfaces of the left and right fuse ends 7 and 17. Insulating strips 9 are provided on the left and right sides of the left and right fuse holders 6 and 10. An insulating protective cover 11 is installed on the upper surface of the left and right fuse holders 6 and 10. Four clips that are compatible with the insulating strips 9 on both sides of the left and right fuse holders 10 are provided on the surface of the insulating protective cover 11. The surface of the groove 12 and the insulating protective cover 11 is respectively provided with four observation frames 13 opposite to the position of the high temperature color-changing ring 8. The circumferential surface of the right fuse tube end 17 is provided with a metal external thread 14. The inside of the left fuse tube seat 6 is provided with a metal spring 15. The inside of the right fuse tube seat 10 is provided with a metal internal thread 16 that matches the metal external thread 14. The conductive structure of the high voltage fuse is isolated from the outside by the insulating protective cover 11, the outside of the left fuse tube seat 6 and the outside of the right fuse tube seat 10, which reduces the electric shock rate and improves the safety performance of the high voltage fuse. At the same time, the fuse tube 5 is protected inside the insulating protective cover 11, which reduces the contact between the fuse tube 5 and the outside, avoids mechanical damage to the fuse tube 5 and increases the service life of the fuse tube 5.

[0030] See Figure 1 , Figure 2Two sets of insulating posts 2 on the upper surface of the base 1 are symmetrically distributed along the center line of the surface. The large insulators 3 and small insulators 4 on the insulating posts 2 are staggered, and the number of large insulators 3 and small insulators 4 is adapted to the voltage of the high-voltage fuse. By controlling the number and distribution of large insulators 3 and small insulators 4, the insulation performance of the insulating posts 2 is enhanced. According to the voltage of the high-voltage fuse, the appropriate insulating posts are selected to ensure the safety of the high-voltage fuse. At the same time, the insulating posts 2, large insulators 3 and small insulators 4 isolate the fuse tube 5 from the base 1, which improves the stability of the fuse tube 5 and extends the service life of the fuse tube 5.

[0031] See Figure 1 , Figure 3 , Figure 4 The left fuse tube end 7 of the fuse tube 5 is inserted into the left fuse tube seat 6 and deforms against the metal spring 15. The right fuse tube end 17 of the fuse tube 5 is threadedly connected to the right fuse tube seat 10. The left fuse tube end 7 presses against the metal spring 15, causing the metal spring 15 to deform. This facilitates the threaded connection between the right fuse tube end 17 and the right fuse tube seat 10, reduces the difficulty of replacing the fuse tube 5, and improves maintenance efficiency. During operation, the metal spring 15 presses against the left fuse tube end 7, making the contact between the fuse tube 5 and the left fuse tube seat 6 and the right fuse tube seat 10 more stable, thus improving the service life of the fuse tube 5.

[0032] See Figure 1 , Figure 2 The insulating protective cover 11 is engaged with the left fuse holder 6 and the right fuse holder 10. The observation frame 13 of the insulating protective cover 11 is matched with the position of the high temperature color-changing ring 8. The engagement connection of the insulating protective cover 11 improves its stability. By observing the color change of the high temperature color-changing ring 8 through the observation frame 13, the condition of the fuse tube 5 can be quickly determined, which improves the maintenance efficiency of the high voltage fuse. At the same time, the insulating protective cover 11, the insulating column 2 and the base 1 form a rectangular structure, which makes the high voltage fuse more stable and improves its stability.

[0033] See Figure 1 , Figure 3 The left fuse tube end 7 and the right fuse tube end 17 are made of the same high-voltage conductor. The left fuse tube end 7 and the right fuse tube end 17 respectively abut against the tube wall of the fuse tube 5, which increases the installation stability of the left fuse tube end 7 and the right fuse tube end 17. The use of high-voltage conductors as conductive materials for the left fuse tube end 7 and the right fuse tube end 17 ensures the conductivity of the fuse tube 5 and increases the service life of the high-voltage fuse. At the same time, the left fuse tube end 7 and the right fuse tube end 17 wrap around the tube wall of the fuse tube 5 to form a sealed structure, which isolates the air and improves the stability of the fuse tube 5, thus increasing the service life of the fuse tube 5.

[0034] See Figure 1 , Figure 2 , Figure 4 The left fuse holder 6 and the right fuse holder 10 have high-voltage conductors connected to the outside on their inner sides. The outer surfaces of the left fuse holder 6 and the right fuse holder 10 are covered with high-voltage insulating material. The fuse tube 5 and the high-voltage conductors of the left fuse holder 6 and the right fuse holder 10 are connected to the outside. The high-voltage insulating material on the outer surface of the left fuse holder 6 and the right fuse holder 10 isolates the inside of the left fuse holder 6 and the right fuse holder 10 from the outside, improving the safety performance of the high-voltage fuse. At the same time, the insulation structure of the high-voltage fuse wraps the conductive structure, preventing the conductive structure from contacting the outside, thus improving the service life of the high-voltage fuse.

[0035] See Figure 1 , Figure 2 , Figure 4 The high-voltage conductors of the metal spring 15, the left fuse holder 6, and the right fuse holder 10 are made of the same material. One end of the metal spring 15 is fixedly connected to one end of the high-voltage conductor of the left fuse holder 6, which increases the conductivity of the metal spring 15. By using the same material, the conductivity of the high-voltage fuse is guaranteed, and the working efficiency and service life of the high-voltage fuse are improved. By connecting the metal spring 15 to the left fuse holder 6, the metal spring 15 is fixed inside the left fuse holder 6, which at the same time improves the conductivity of the high-voltage fuse.

[0036] The implementation principle of this embodiment is as follows: First, the insulating column 2, the large insulator 3, and the small insulator 4 are fixed on the upper surface of the base 1. Then, the left fuse tube seat 6 and the right fuse tube seat 10 are fixed on the insulating column 2. Subsequently, the left fuse tube end 7 of the fuse tube 5 is inserted into the left fuse tube seat 6, pressing against the metal spring 15 inside the left fuse tube seat 6, causing the metal spring 15 to deform. Then, the metal external thread 14 of the right fuse tube end 17 is screwed into the metal internal thread 16 of the right fuse tube seat 10. Finally, the insulating protective cover 11 is snapped onto the left fuse tube seat 6 and the right fuse tube seat 10, so that the high-voltage fuse forms a rectangular structure. It is fixedly connected to the external fixed object through the base 1. The internal high-voltage conductors of the left fuse tube seat 6 and the right fuse tube seat 10 are connected to the external wires to work.

[0037] The high-temperature color-changing ring 8 is composed of three uniformly arranged irreversible temperature-indicating materials: ThermoLabel®-80, ThermoLabel®-115, and ThermoLabel®-160. When the temperature of the fuse tube exceeds 80 degrees Celsius, it changes from beige to bright ochre brown; when the temperature of the fuse tube exceeds 115 degrees Celsius, it changes from pink to dark purplish-brown; and when the temperature of the fuse tube exceeds 160 degrees Celsius, it changes from blue to jet black. When the fuse tube 5 is working normally, the temperature of the left fuse tube end 7 and the right fuse tube end 17 is between 70 and 110 degrees Celsius. During the use of the high-voltage fuse, the color change of the high-temperature color-changing ring 8 is observed through the observation frame 13 on the surface of the insulating protective cover 11 to identify the fuse tube 5.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-voltage fuse, characterized in that: Includes a base (1), the upper surface of which is provided with two insulating posts (2), the upper ends of which are respectively provided with a left fuse holder (6) and a right fuse holder (10), a fuse tube (5) is installed between the left fuse holder (6) and the right fuse holder (10), the two sides of which are respectively provided with conductive left fuse tube ends (7) and right fuse tube ends (17), the exposed surfaces of the left fuse tube ends (7) and the right fuse tube ends (17) are provided with high temperature color changing rings (8), the left and right sides of the left fuse holder (6) and the right fuse holder (10) are respectively provided with insulating strips (9), ... An insulating protective cover (11) is installed on the upper surface of the right fuse tube seat (10). The surface of the insulating protective cover (11) is provided with four slots (12) that are compatible with the insulating strips (9) on both sides of the left fuse tube seat (6) and the right fuse tube seat (10). The surface of the insulating protective cover (11) is provided with four observation frames (13) that are opposite to the high temperature color-changing ring (8). The circumferential surface of the right fuse tube end (17) is provided with a metal external thread (14). The interior of the left fuse tube seat (6) is provided with a metal spring (15). The interior of the right fuse tube seat (10) is provided with a metal internal thread (16) that is compatible with the metal external thread (14).

2. The high-voltage fuse according to claim 1, characterized in that: The two sets of insulating columns (2) on the upper surface of the base (1) are symmetrically distributed along the center line of the surface. The large insulators (3) and small insulators (4) on the insulating columns (2) are staggered, and the number of large insulators (3) and small insulators (4) is adapted to the voltage of the high-voltage fuse.

3. The high-voltage fuse according to claim 1, characterized in that: The left fuse tube end (7) of the fuse tube (5) is inserted into the left fuse tube seat (6) and deforms against the metal spring (15). The right fuse tube end (17) of the fuse tube (5) is threadedly connected to the right fuse tube seat (10).

4. The high-voltage fuse according to claim 1, characterized in that: The insulating protective cover (11) is engaged with the left fuse holder (6) and the right fuse holder (10), and the observation frame (13) of the insulating protective cover (11) is adapted to the position of the high temperature color-changing ring (8).

5. The high-voltage fuse according to claim 1, characterized in that: The left fuse tube end (7) and the right fuse tube end (17) are high-voltage conductors made of the same material. The left fuse tube end (7) and the right fuse tube end (17) respectively abut against the tube wall of the fuse tube (5).

6. The high-voltage fuse according to claim 1, characterized in that: The inner sides of the left fuse holder (6) and the right fuse holder (10) are provided with high-voltage conductors that are connected to the outside, and the outer surfaces of the left fuse holder (6) and the right fuse holder (10) are covered with high-voltage insulating material.

7. The high-voltage fuse according to claim 1, characterized in that: The high-voltage conductors of the metal spring (15), the left fuse holder (6), and the right fuse holder (10) are made of the same material. One end of the metal spring (15) is fixedly connected to one end of the high-voltage conductor of the left fuse holder (6).

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