Insulation protection device of high-voltage cable joint

Abstract

The utility model relates to the field of cable joint insulation, and discloses an insulation protection device of a high-voltage cable joint, which comprises two cables, the right sides of the outer walls of the cables are fixedly connected with first connecting shells, the outer walls of the first connecting shells are fixedly connected with mounting blocks, and the left sides of the outer walls of the cables are fixedly connected with sliding sleeves. And a second connecting shell is slidably connected to the outer wall of the sliding sleeve, a fixing block is fixedly connected to the outer wall of the second connecting shell, the sides, close to each other, of the fixing block and the mounting block are connected through a limiting assembly, and the sides, close to each other, of the first connecting shell and the second connecting shell are connected through a sealing assembly so that the sealing performance can be improved. According to the utility model, the mounting block and the fixing block are aligned, the adjusting button is pressed to insert the connecting rod and the limiting block into the connecting groove, and the adjusting button is loosened to enable the limiting block to rotate so as to clamp the first connecting shell, so that the fixing block and the mounting block are quickly connected.

Description

Technical Field

[0001] This utility model relates to the field of cable joint insulation, and more particularly to an insulation protection device for high-voltage cable joints. Background Technology

[0002] High-voltage cables are used to transmit high-voltage electrical energy, typically ranging from 35kV to 220kV. They consist of a conductor, insulation layer, inner sheath, filler (armor), and outer insulation. The conductor is usually made of copper or aluminum, possessing excellent conductivity and responsible for transmitting current. The insulation layer typically uses materials such as cross-linked polyethylene, capable of withstanding high voltage and exhibiting excellent moisture resistance, heat resistance, and mechanical strength. The armor layer enhances the cable's compressive strength, prevents damage from external forces, and is suitable for underground installation. High-voltage cables offer advantages such as large transmission capacity, low line loss, high transmission stability, and reduced engineering investment, enabling efficient and safe transmission of large amounts of electrical energy over long distances. They are widely used in inter-regional power transmission, large substation connections, and play a crucial role in new energy fields such as wind power, solar power generation, and urban rail transit.

[0003] Existing insulation protection devices typically require a large number of nails for installation, which is very troublesome. Furthermore, disassembly is also difficult when the device is damaged. Moreover, existing insulation protection devices have low sealing performance, making them prone to rainwater seeping in through gaps and causing short circuits at the joints. To address these technical problems, this application proposes an insulation protection device for high-voltage cable joints. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose an insulation protection device for a high-voltage cable joint. By aligning the mounting block and the fixing block, pressing the adjustment button to insert the connecting rod and the limiting block into the connecting groove, and then releasing the adjustment button to make the limiting block rotate and lock the first connecting shell, the fixing block and the mounting block can be quickly connected.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An insulation protection device for a high-voltage cable joint includes two cables. A first connecting shell is fixedly connected to the right side of the outer wall of the cable, and an mounting block is fixedly connected to the outer wall of the first connecting shell. A sliding sleeve is fixedly connected to the left side of the outer wall of the cable, and a second connecting shell is slidably connected to the outer wall of the sliding sleeve. A fixing block is fixedly connected to the outer wall of the second connecting shell. The fixing block and the mounting block are connected on their adjacent sides by a limiting component. The first connecting shell and the second connecting shell are connected on their adjacent sides by a sealing component to increase the sealing performance.

[0007] Furthermore, the limiting component includes a plurality of connecting rods rotatably connected to the left side of the fixed block, the inner wall of the connecting rods being inserted into the inner wall of the connecting groove, the left side of the connecting rods being fixedly connected to the limiting block, and the right side of the limiting block abutting against the left side of the mounting block.

[0008] Furthermore, a gear is fixedly connected to the right side of the connecting rod, and racks are meshed with the gears on opposite sides of the connecting rod.

[0009] Furthermore, an adjustment button is fixedly connected to the top of each of the two racks, and multiple springs are fixedly connected to the bottom of each adjustment button. The bottom end of each spring is fixedly connected to the inner wall of the second connecting shell.

[0010] Furthermore, the sealing assembly includes a second sealing ring fixedly connected to the right side of the first connecting shell, a first sealing ring fixedly connected to the left side of the second connecting shell, the right side of the second sealing ring being inserted into the left side of the second connecting shell, and the left side of the first sealing ring being inserted into the right side of the first connecting shell.

[0011] Furthermore, a plurality of second sealing strips are fixedly connected to the inner wall of the second sealing ring, and the outer wall of the second sealing strips abuts against the outer wall of the first sealing ring. A plurality of the outer walls of the first sealing ring are fixedly connected to the outer wall, and the outer walls abut against the inner wall of the second sealing ring.

[0012] Furthermore, the first sealing ring, the second sealing ring, and the second sealing strip are all made of fluororubber.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by aligning the mounting block and the fixing block, pressing the adjustment button to insert the connecting rod and the limiting block into the connecting groove, and then releasing the adjustment button to allow the limiting block to rotate and thus lock the first connecting shell, the fixing block and the mounting block can be quickly connected.

[0015] 2. In this utility model, when the mounting block and the fixing block are connected, the first sealing ring is aligned with the corresponding position of the first connecting shell to ensure that it fits tightly against the inner wall of the first connecting shell. At the same time, the second sealing ring is inserted into the second connecting shell. During this process, the second sealing strip will precisely abut against the first sealing ring, and the first sealing strip will also tightly abut against the second sealing ring. They cooperate with each other to further enhance the sealing effect, effectively block external factors from interfering, and ensure the sealing performance of the overall connection. Attached Figure Description

[0016] Figure 1 This is a perspective view of an insulation protection device for a high-voltage cable joint proposed in this utility model;

[0017] Figure 2A schematic diagram of a limiting block for an insulation protection device for a high-voltage cable joint proposed in this utility model;

[0018] Figure 3 A schematic diagram of a bidirectional worm gear for an insulation protection device for a high-voltage cable joint proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing ring block of an insulation protection device for a high-voltage cable joint proposed in this utility model.

[0020] Legend:

[0021] 1. Cable; 2. First connecting shell; 3. Mounting block; 4. Sliding sleeve; 5. Second connecting shell; 6. Fixing block; 7. Connecting rod; 8. Limiting block; 9. Adjusting button; 10. First sealing ring; 11. Gear; 12. Rack; 13. Spring; 14. Second sealing ring; 15. Second sealing strip; 16. First sealing strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3 An insulation protection device for a high-voltage cable joint includes two cables 1. A first connecting shell 2 is fixedly connected to the right side of the outer wall of each cable 1. A mounting block 3 is fixedly connected to the outer wall of the first connecting shell 2. A sliding sleeve 4 is fixedly connected to the left side of the outer wall of each cable 1. A second connecting shell 5 is slidably connected to the outer wall of the sliding sleeve 4. The second connecting shell 5 slides after the two cables 1 are connected, thus not affecting the connection of the cables 1. A fixing block 6 is fixedly connected to the outer wall of the second connecting shell 5. Multiple connecting rods 7 are rotatably connected to the left side of the fixing block 6. The inner wall of the connecting rods 7 is inserted into the inner wall of the connecting groove. A limit block 8 is fixedly connected to the left side of the connecting rods 7. The right side of the limit block 8 is connected to the mounting block. 3. The left side abuts and locks the first connecting shell 2, connecting the fixing block 6 and the mounting block 3; the right side of the connecting rod 7 is fixedly connected to a gear 11, and the gears 11 on both sides are meshed with racks 12 on opposite sides. When the racks 12 slide, they mesh with the gears 11, causing the gears 11 to drive the connecting rod 7 to rotate, thus rotating the limiting block 8; the top of the two racks 12 is fixedly connected to an adjustment button 9. Pressing the adjustment button 9 causes the adjustment button 9 to drive the two racks 12 to slide; the bottom of the adjustment button 9 is fixedly connected to multiple springs 13. The bottom end of the springs 13 is fixedly connected to the inner wall of the second connecting shell 5. When the springs 13 release their elastic force, they push the adjustment button 9 back to drive the racks 12 to slide.

[0024] Reference Figure 1 , Figure 3 and Figure 4 A second sealing ring 14 is fixedly connected to the right side of the first connecting shell 2, and a first sealing ring 10 is fixedly connected to the left side of the second connecting shell 5. The right side of the second sealing ring 14 is inserted into the left side of the second connecting shell 5, and the second sealing ring 14 is inserted into the second connecting shell 5 and fits against its inner wall. The left side of the first sealing ring 10 is inserted into the right side of the first connecting shell 2, and the first sealing ring 10 is aligned with the corresponding position of the first connecting shell 2 to ensure that it fits tightly against the inner wall of the first connecting shell 2. A plurality of second sealing strips 15 are fixedly connected to the inner wall of the second sealing ring 14, and the outer wall of the second sealing strips 15 abuts against the outer wall of the first sealing ring 10. The fixed connection has multiple first sealing strips 16. The outer wall of the first sealing strip 16 abuts against the inner wall of the second sealing ring 14. The second sealing strip 15 precisely abuts against the first sealing ring 10, and the first sealing strip 16 also tightly abuts against the second sealing ring 14. They cooperate with each other to further enhance the sealing effect, effectively block external factors from interfering with the connection, and ensure the overall sealing performance. The first sealing ring 10, the second sealing ring 14, the second sealing strip 15, and the first sealing strip 16 are all made of fluororubber, which has excellent weather aging resistance, ozone resistance, vacuum performance, and excellent physical, mechanical, and electrical properties.

[0025] Working principle: When starting installation, align the mounting block 3 and the fixing block 6, press the adjustment button 9 to make the two racks 12 slide. When the racks 12 slide, they mesh with the gear 11, which drives the connecting rod 7 to rotate, causing the limiting block 8 to rotate. After the connecting rod 7 and the limiting block 8 are inserted into the connecting groove, release the adjustment button 9. The spring 13 releases its elastic force, pushes the adjustment button 9 back, and drives the racks 12 to slide and mesh with the gear 11, causing the limiting block 8 to rotate, thereby locking the first connecting shell 2 and connecting the fixing block 6 and the mounting block 3.

[0026] When the mounting block 3 and the fixing block 6 are connected, the first sealing ring 10 is aligned with the corresponding position of the first connecting shell 2 to ensure that it fits tightly against the inner wall of the first connecting shell 2. At the same time, the second sealing ring 14 is inserted into the second connecting shell 5. During this process, the second sealing strip 15 will precisely abut against the first sealing ring 10, and the first sealing strip 16 will also tightly abut against the second sealing ring 14. They cooperate with each other to further enhance the sealing effect, effectively block external factors from interfering, and ensure the sealing performance of the overall connection.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An insulation protection device for a high-voltage cable joint, characterized in that, The device includes two cables (1). A first connecting shell (2) is fixedly connected to the right side of the outer wall of the cable (1). An mounting block (3) is fixedly connected to the outer wall of the first connecting shell (2). A sliding sleeve (4) is fixedly connected to the left side of the outer wall of the cable (1). A second connecting shell (5) is slidably connected to the outer wall of the sliding sleeve (4). A fixing block (6) is fixedly connected to the outer wall of the second connecting shell (5). The fixing block (6) and the mounting block (3) are connected on the same side by a limiting component. The first connecting shell (2) and the second connecting shell (5) are connected on the same side by a sealing component to increase the sealing performance.

2. The insulation protection device for a high-voltage cable joint according to claim 1, characterized in that: The limiting component includes multiple connecting rods (7) rotatably connected to the left side of the fixed block (6). The inner wall of the connecting rod (7) is inserted into the inner wall of the connecting groove. The left side of the connecting rod (7) is fixedly connected to a limiting block (8). The right side of the limiting block (8) abuts against the left side of the mounting block (3).

3. The insulation protection device for a high-voltage cable joint according to claim 2, characterized in that: A gear (11) is fixedly connected to the right side of the connecting rod (7), and a rack (12) is meshed with the gear (11) on the opposite side of the left and right sides.

4. The insulation protection device for a high-voltage cable joint according to claim 3, characterized in that: An adjustment button (9) is fixedly connected to the top of each of the two racks (12), and a plurality of springs (13) are fixedly connected to the bottom of the adjustment button (9). The bottom end of the springs (13) is fixedly connected to the inner wall of the second connecting shell (5).

5. The insulation protection device for a high-voltage cable joint according to claim 1, characterized in that: The sealing assembly includes a second sealing ring (14) fixedly connected to the right side of the first connecting shell (2), a first sealing ring (10) fixedly connected to the left side of the second connecting shell (5), the right side of the second sealing ring (14) being inserted into the left side of the second connecting shell (5), and the left side of the first sealing ring (10) being inserted into the right side of the first connecting shell (2).

6. The insulation protection device for a high-voltage cable joint according to claim 5, characterized in that: The inner wall of the second sealing ring (14) is fixedly connected with a plurality of second sealing strips (15), the outer wall of the second sealing strips (15) abuts against the outer wall of the first sealing ring (10), and the outer wall of the first sealing ring (10) is fixedly connected with a plurality of first sealing strips (16), the outer wall of the first sealing strips (16) abuts against the inner wall of the second sealing ring (14).

7. The insulation protection device for a high-voltage cable joint according to claim 6, characterized in that: The first sealing ring (10), the second sealing ring (14), the second sealing strip (15) and the first sealing strip (16) are all made of fluororubber.

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