Totally-enclosed 10kV outdoor high-voltage drop-out fuse with joint

Abstract

The utility model relates to the technical field of fuses, in particular to a totally-enclosed 10kV outdoor high-voltage drop-out fuse with a joint. Comprising a first connecting piece, a first joint arranged on the first connecting piece, a second connecting piece spaced from the first connecting piece, a second joint arranged on the second connecting piece, an insulating piece arranged between the first connecting piece and the second connecting piece, and a frame body connected with the insulating piece, the first connecting piece is electrically connected with external equipment through the first connector, and the second connecting piece is electrically connected with the external equipment through the second connector. The drop-out fuse is electrically connected with external equipment through the first joint and the second joint, the electrical connection is high in flexibility, the connection is stable and reliable, the anti-interference performance is high, and the normal operation of the drop-out fuse is ensured.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, and in particular to a fully enclosed 10kV outdoor high voltage drop-out fuse with a connector. Background Technology

[0002] Drop-out fuses are the most commonly used overcurrent protection devices in 10kV distribution line branches and distribution transformers. During normal operation, the fuse tube is closed by the tension of the fuse wire. When a power system fault occurs, the fault current quickly melts the fuse wire and forms an electric arc. The arc-extinguishing tube, heated by the arc, decomposes and releases a large amount of gas, creating high pressure inside the tube. This pressure is then strongly blown along the tube, rapidly elongating and extinguishing the arc. After the fuse wire melts, the fuse tube drops, creating a clear open position, thus functioning as a disconnector switch and providing a safe and reliable working environment for line maintenance. Drop-out fuses are primarily suitable for outdoor high-altitude work. Because the exposed working components are fixed to the line by welding, these components are often exposed to wind, rain, and erosion, leading to loose connections and detachment. This prevents external equipment from connecting to the drop-out fuse for extended periods, interfering with its normal operation. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a fully enclosed 10kV outdoor high-voltage drop-out fuse with connectors. It is electrically connected to external equipment through the first connector and the second connector, providing high flexibility in electrical connection, stable and reliable connection, and high anti-interference performance, thus ensuring the normal operation of the drop-out fuse.

[0004] To achieve the above objectives, this utility model provides a fully enclosed 10kV outdoor high-voltage drop-out fuse with a connector, comprising a first connector, a first connector disposed on the first connector, a second connector disposed at a distance from the first connector, a second connector disposed on the second connector, an insulating component disposed between the first connector and the second connector, and a frame connected to the insulating component. The first connector is electrically connected to external equipment through the first connector, and the second connector is electrically connected to external equipment through the second connector.

[0005] Preferably, an assembly head is provided at one end of the frame near the insulating component. The assembly head is inclined relative to the frame. A connecting screw is provided at the connection between the assembly head and the frame. The assembly head is connected to the insulating component.

[0006] Preferably, both ends of the frame are provided with reinforcing plates, the reinforcing plates are L-shaped, and mounting screws are provided at the connection between the reinforcing plates and the frame.

[0007] Preferably, a fuse tube is provided between the first connector and the second connector.

[0008] Preferably, the first connector is provided with a first insulating layer, which is sleeved on the outside of the first connector, and the second connector is provided with a second insulating layer, which is sleeved on the outside of the second connector.

[0009] Preferably, a connecting ring is provided on the outer side of the first connector.

[0010] The beneficial effects of this utility model are: through the first connector and the second connector, it can be electrically connected to external equipment, which is highly flexible and stable and reliable, with high anti-interference performance, ensuring the normal operation of the drop-out fuse. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the frame structure of this utility model.

[0013] The reference numerals in the figures include:

[0014] 1—First connector; 11—First joint; 12—First insulating layer

[0015] 13 - Connecting Ring

[0016] 2—Second connector; 21—Second joint; 22—Second insulation layer

[0017] 3—Insulating components

[0018] 4—Frame body; 41—Assembly head; 42—Connecting screws

[0019] 43 - Reinforcing plate 44 - Mounting screws

[0020] 5 - Fuse tube. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1 to 2As shown, this utility model discloses a fully enclosed 10kV outdoor high-voltage drop-out fuse with a connector, comprising a first connector 1, a first connector 11 disposed on the first connector 1, a second connector 2 disposed at a distance from the first connector 1, a second connector 21 disposed on the second connector 2, an insulating component 3 disposed between the first connector 1 and the second connector 2, and a frame 4 connected to the insulating component 3. The first connector 1 is electrically connected to external equipment through the first connector 11, and the second connector 2 is electrically connected to external equipment through the second connector 21.

[0023] The first connector 1 and the second connector 2 are spaced apart from each other. The insulating component 3 is located between the first connector 1 and the second connector 2, and the frame 4 is connected to the insulating component 3. This allows the drop-out fuse to be installed and fixed in a designated position via the frame 4. The first connector 11 protrudes from the outside of the first connector 1, and the second connector 21 protrudes from the outside of the second connector 2. This facilitates the electrical connection of external equipment or the corresponding power system to the first connector 1 and the second connector 2 via the first connector 11 and the second connector 21, respectively. The electrical connection features low resistance, low inductance, and high reliability. Common electrical connection methods include hard-wired connection and plug-in connection. This application preferentially selects plug-in connection, which is achieved through a plug and a socket, and features flexible and convenient operation and long service life. The insulating component 3 uses an existing insulator post, which is formed by one-time molding and vulcanization, and has advantages such as high strength, light weight, and strong tensile and bending resistance. This utility model provides electrical connection to external equipment via the first connector 11 and the second connector 21. The electrical connection is highly flexible, stable, and reliable, with high anti-interference performance, ensuring the normal operation of the drop-out fuse.

[0024] In this embodiment, an assembly head 41 is provided at one end of the frame 4 near the insulating component 3. The assembly head 41 is inclined relative to the frame 4, and a connecting screw 42 is provided at the connection between the assembly head 41 and the frame 4. The assembly head 41 is connected to the insulating component 3. Specifically, because the assembly head 41 is inclined relative to the frame 4, and the assembly head 41 is connected and fixed to the frame 4 by the connecting screw 42, and then connected to the insulating component 3 by the assembly head 41, the drop-out fuse is placed at an overall inclination relative to the frame 4, preventing strong winds from blowing violently at the shaking drop-out fuse, thus providing a good current diversion and windproof effect.

[0025] In this embodiment, both ends of the frame 4 are provided with reinforcing plates 43. The reinforcing plates 43 have an L-shaped structure, and mounting screws 44 are provided at the connection between the reinforcing plates 43 and the frame 4. Specifically, the two reinforcing plates 43 are located at both ends of the frame 4, and the reinforcing plates 43 are installed and connected to the bottom of the frame 4 by mounting screws 44. The reinforcing plates 43 are detachable from the frame 4, making installation and disassembly convenient. The L-shaped structure of the reinforcing plates 43 provides good structural compactness and high structural strength, occupies little installation space, and prevents the frame 4 from being damaged by external impacts.

[0026] In this embodiment, a fuse tube 5 is provided between the first connector 1 and the second connector 2. Specifically, the fuse tube 5 is located between the first connector 1 and the second connector 2. The fuse tube 5 consists of an inner arc-extinguishing tube and an outer phenolic paper tube or epoxy fiberglass cloth tube. During normal operation of the drop-out fuse, the fuse tube 5 forms a closed position after being tensioned by the fuse wire. When a fault occurs in the power system, the fault current quickly melts the fuse wire and forms an electric arc. The arc-extinguishing tube is heated by the electric arc and decomposes into a large amount of gas, creating a high pressure inside the tube and blowing strongly along the pipe. The electric arc is quickly stretched and extinguished. After the fuse wire melts, it loses tension and flips down, causing the tightening mechanism to release the fuse tube 5. When the fuse tube 5 falls, it forms a clear open position.

[0027] In this embodiment, the first connector 1 is provided with a first insulating layer 12, which is sleeved on the outside of the first connector 1. The second connector 2 is provided with a second insulating layer 22, which is sleeved on the outside of the second connector 2. Specifically, the first insulating layer 12 is sleeved on the outside of the first connector 1, and the second insulating layer 22 is sleeved on the outside of the second connector 2. Both the first insulating layer 12 and the second insulating layer 22 are made of high-quality silicone rubber, which has excellent stain resistance and requires no cleaning or maintenance. The unique hydrophobicity of silicone rubber allows the first connector 1 and the second connector 2 to still have excellent waterproof and electrical insulation properties even after dirt accumulation. They also have good elasticity and are lightweight.

[0028] In this embodiment, a connecting ring 13 is provided on the outer side of the first connector 1. Specifically, the first connector 1 is installed and connected to other working parts through the connecting ring 13, and the connection is stable and reliable, and simple and convenient to use.

[0029] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A full enclosed 10 kV outdoor high voltage drop-out fuse with terminal, characterized in that: The utility model relates to a first connecting piece, first joint of first connecting piece, second connecting piece of interval arrangement between first connecting piece, second joint of second connecting piece, insulating piece of arrangement between first connecting piece and second connecting piece and frame body connected with insulating piece are provided, first connecting piece is connected with the equipment of outside through first joint, second connecting piece is connected with the equipment of outside through second joint.

2. A full enclosed 10 kV outdoor high voltage drop-out fuse with a terminal according to claim 1, characterized in that: One end of the frame body near the insulating piece is provided with an assembly head, the assembly head is inclined relative to the frame body, a connecting screw is arranged at the connection between the assembly head and the frame body, and the assembly head is connected with the insulating piece.

3. A full enclosed 10 kV outdoor high voltage drop-out fuse with a joint according to claim 2, characterized in that: Both ends of the frame body are provided with reinforcing plates, the reinforcing plates are L-shaped structures, and mounting screws are arranged at the connections between the reinforcing plates and the frame body.

4. A full enclosed 10 kV outdoor high voltage drop-out fuse with a terminal according to claim 1, characterized in that: A fuse tube is arranged between the first connecting piece and the second connecting piece.

5. A full enclosed 10 kV outdoor high voltage drop-out fuse with a terminal according to claim 1, characterized in that: The first connecting piece is provided with a first insulating layer, the first insulating layer is sleeved on the outer side of the first connecting piece, the second connecting piece is provided with a second insulating layer, and the second insulating layer is sleeved on the outer side of the second connecting piece.

6. A full enclosed 10 kV outdoor high voltage drop-out fuse with a terminal according to claim 1, characterized in that: A connecting ring is arranged on the outer side of the first connecting piece.

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