A joint protection device for an overhead insulated cable

Abstract

The utility model relates to cable connection technical field discloses a joint protection device of overhead insulated cable, including power connection, the outside of power connection is connected with the protection ring of sliding, the inside and outside fixed connection of power connection has a variety of protection mechanism, the variety of protection mechanism includes two insulation sleeves, the inner wall fixed connection of insulation sleeve has the sealing washer, the inside both sides fixed connection of power connection has two connecting pipes, one of connecting pipe's outside fixed connection has electric control valve, another connecting pipe's inside fixed connection has the explosion -proof membrane, in the utility model, the protection ring of power connection's outside carries out the protection to power connection to carry out the protection to the inside through different protection mode, multilevel, complementary protection mode, has strengthened the security and stability among routine use, has promoted the overall reliability and service life of power connection.

Description

Technical Field

[0001] This utility model relates to the field of cable connection technology, and in particular to a joint protection device for overhead insulated cables. Background Technology

[0002] As a core component in urban and rural power distribution networks, industrial parks, and new energy grid connection projects, overhead insulated cables have joints that connect two or more cables. These joints ensure the electrical performance and mechanical strength of the cable connection points.

[0003] The joint of an overhead insulated cable mainly consists of an insulating shell, connecting hardware, a shielding layer, and stress control elements. First, the cable end is pre-treated, including stripping the insulation layer and shielding layer and cleaning the conductor. Then, the connecting hardware is crimped and fixed to the conductor to ensure reliable conductivity. Next, stress control elements are installed to disperse the concentrated electric field. Finally, the insulating shell is put on to ensure the joint operates stably in the overhead environment for a long time.

[0004] In the prior art, the outer protection of joint devices for some overhead insulated cables mostly relies on an integral shell and a single sealing structure, which cannot provide multi-layer protection according to different protection methods, thus reducing safety and stability, as well as overall reliability and service life. In order to address the above problems, a joint protection device for overhead insulated cables is proposed. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a joint protection device for overhead insulated cables, aiming to improve the problem that some existing devices cannot provide multi-level protection according to different protection methods.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A joint protection device for an overhead insulated cable includes a power connector. A protective ring is slidably connected to the outside of the power connector. Multiple protection mechanisms are fixedly connected to the inside and outside of the power connector. A fastening mechanism is slidably connected to the outside of the protective ring. The multiple protection mechanisms include two insulating sleeves. The outside of the two insulating sleeves is fixedly connected to both sides of the inner wall of the power connector. A sealing gasket is fixedly connected to the inner wall of the insulating sleeve. Two connecting pipes are fixedly connected to both sides of the inside of the power connector. An electric control valve is fixedly connected to the outside of one connecting pipe, and an explosion-proof membrane is fixedly connected to the inside of the other connecting pipe. A uniform air outlet assembly is fixedly connected to the inside of the connecting pipe.

[0008] As a further description of the above technical solution:

[0009] The uniform air outlet assembly includes two uniform air outlet plates. The outside of the uniform air outlet plates is fixedly connected to the inside of the connecting pipe, and the inside of the connecting pipe is provided with an air outlet hole.

[0010] As a further description of the above technical solution:

[0011] The fastening mechanism includes multiple fixing rings, with adjacent sides of the fixing rings slidably connected to the outside of the protective ring. Multiple fixing rings are slidably connected to the outside of the protective ring, and multiple connecting fixing plates are fixedly connected to adjacent sides of every two fixing rings.

[0012] As a further description of the above technical solution:

[0013] The power connector is externally fixedly connected to a waterproof layer, and the waterproof layer is externally fixedly connected to an anti-corrosion layer.

[0014] As a further description of the above technical solution:

[0015] Each pair of the connecting fixing plates is internally slidably connected with a threaded plug, and the bottom of the threaded plug is threadedly connected with a threaded cap;

[0016] As a further description of the above technical solution:

[0017] The threaded plug is externally slidably connected to a distance control post, and the upper and lower sides of the distance control post are slidably connected to the adjacent side of every two connecting fixing plates.

[0018] As a further description of the above technical solution:

[0019] The protective ring has multiple anti-slip grooves on its outer side, and multiple fixing auxiliary blocks are fixedly connected to the inner side of the fixing ring on the adjacent side. The fixing auxiliary blocks are slidably connected to the outer side of the protective ring on the adjacent side.

[0020] As a further description of the above technical solution:

[0021] The power connector is slidably connected to an anti-slip rotating block, and the power connector is slidably connected to a rotating block. The anti-slip rotating block is slidably connected to the outside of the protective ring, and the rotating block is slidably connected to the outside of the protective ring.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the power connector is protected by an external protective ring. Simultaneously, the insulating sleeve and sealing gasket provide insulation from the external environment during use, preventing leakage accidents. Furthermore, during use, if the internal pressure is too high, it is first released through an electric control valve via another connecting pipe. If the electric control valve fails, the pressure is released through a uniform venting plate after the explosion-proof membrane ruptures. Thus, different protection methods are used to protect the internal components. This multi-layered and complementary protection enhances the safety and stability during daily use, improving the overall reliability and service life of the power connector.

[0024] 2. In this utility model, when the power connector is connected to the protective ring, multiple fixing rings are used for connection. At the same time, threaded plugs are inserted into the interior of the connecting fixing plate and tightened by threaded caps during connection. Meanwhile, the distance control column is used for tightening according to different heights. At the same time, the fixing auxiliary block reduces slippage during tightening and prevents the protective ring from falling off. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a joint protection device for an overhead insulated cable proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the uniform air outlet plate of a joint protection device for overhead insulated cables proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the anti-slip connecting rotating block of a joint protection device for overhead insulated cables proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the connection fixing plate of a joint protection device for overhead insulated cables proposed in this utility model;

[0029] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0030] Figure 6 This is a schematic diagram of the waterproof layer of a joint protection device for overhead insulated cables proposed in this utility model.

[0031] Legend:

[0032] 1. Power connector; 2. Insulating sleeve; 3. Sealing gasket; 4. Connecting pipe; 5. Uniform venting plate; 6. Explosion-proof membrane; 7. Electric control valve; 8. Protective ring; 9. Waterproof layer; 10. Anti-corrosion layer; 11. Fixing ring; 12. Distance control post; 13. Threaded plug; 14. Threaded cap; 15. Connecting fixing plate; 16. Fixing auxiliary block; 17. Anti-slip groove; 18. Vent hole; 19. Anti-slip connecting rotating block; 20. Rotating connecting block. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 2 and Figure 6 This utility model provides an embodiment of a joint protection device for overhead insulated cables, including a power connector 1. The power connector 1 is the core connecting component of the entire overhead insulated cable joint protection device and plays a key role in current transmission in the cable line. A protective ring 8 is slidably connected to the outside of the power connector 1. Multiple protection mechanisms are fixedly connected inside and outside the power connector 1. The multiple protection mechanisms include two insulating sleeves 2. The insulating sleeves 2 can effectively prevent leakage accidents caused by poor insulation performance of the inner wall of the power connector 1. The two insulating sleeves 2 are fixedly connected to the two sides of the inner wall of the power connector 1. A sealing gasket 3 is fixedly connected to the inner wall of the insulating sleeve 2. The sealing gasket 3 is fixedly connected to the inner wall of the insulating sleeve 2. The function of the sealing gasket 3 is to enhance the sealing performance of the device and prevent external moisture, dust and other impurities from entering the interior of the power connector 1. Two connecting pipes 4 are fixedly connected to the two sides of the interior of the power connector 1. When the internal pressure of the device is too high, the gas can be discharged to the outside through the connecting pipes 4. One connecting pipe 4 is connected to an electric control valve 7 and the other is connected to an explosion-proof membrane 6, forming a double pressure release channel.

[0035] One of the connecting pipes 4 is externally fixedly connected to an electric control valve 7. The electric control valve 7 can automatically adjust according to the internal pressure of the device. When the internal pressure is too high, the electric control valve 7 will open to allow gas to escape through the connecting pipe 4. When the pressure returns to normal, it will close. The other connecting pipe 4 is internally fixedly connected to an explosion-proof diaphragm 6. When the internal pressure of the device exceeds its set tolerance value and the electric control valve 7 is damaged and unable to exhaust gas normally, the explosion-proof diaphragm 6 will rupture. The connecting pipe 4 is internally fixedly connected to a uniform gas outlet assembly, which includes two uniform gas outlet plates 5. When gas enters… After entering the connecting pipe 4, the gas first passes through the uniform gas outlet plate 5. Under the action of the uniform gas outlet plate 5, the gas is dispersed and then discharged through the gas outlet 18. The uniform gas outlet plate 5 is fixedly connected to the outside of the connecting pipe 4. The connecting pipe 4 has a gas outlet 18 inside. The gas dispersed by the uniform gas outlet plate 5 is discharged to the outside of the device through the gas outlet 18. The protective ring 8 is slidably connected to the outside of the device by a fastening mechanism. During operation, the protective ring 8 wraps around the outside of the power connector 1. When an external object comes into contact with it, it will first come into contact with the protective ring 8. The protective ring 8 can absorb some of the impact force and reduce direct damage to the power connector 1.

[0036] Reference Figure 3 , Figure 4 and Figure 5 The fastening mechanism includes multiple retaining rings 11, which are tightly fitted to the outside of the protective ring 8, providing a stable foundation for subsequent fastening operations. This ensures that the protective ring 8 can be firmly installed on the power connector 1, preventing displacement and detachment of the protective ring 8 during use, and ensuring the effective functioning of the protective ring 8. The adjacent side of the retaining ring 11 is slidably connected to the outside of the protective ring 8. A waterproof layer 9 is fixedly connected to the outside of the power connector 1, preventing moisture from penetrating into the internal and external deep structures of the power connector 1. An anti-corrosion layer 10 is fixedly connected to the outside of the waterproof layer 9, preventing corrosion of the power connector 1 and related external structures. Threaded plugs 13 are slidably connected inside every two connecting fixing plates 15. The threaded plugs 13 are inserted into the inside of the connecting fixing plates 15, and then the threaded caps 14 at the bottom are tightened, causing the threaded plugs 13 to exert a pulling force on the connecting fixing plates 15, thereby tightly fixing the various components together.

[0037] The bottom of the threaded plug 13 is threaded with a threaded cap 14, which ensures the reliability of the connection. The threaded plug 13 is externally slidably connected to a distance control post 12. The distance control post 12, through its own length and position adjustment, provides support and distance control for the connecting fixing plate 15 during the tightening of the threaded plug 13, ensuring the protective ring 8 is fixed in the appropriate position. The upper and lower sides of the distance control post 12 are slidably connected to the adjacent side of every two connecting fixing plates 15. Through the tightening action of the threaded plug 13 and the threaded cap 14, the connecting fixing plate 15 tightly pulls the fixing ring 11 towards the power connector 1, thus firmly fixing the protective ring 8. The outer surface of the protective ring 8 has multiple anti-slip grooves 17. The concave-convex structure of the anti-slip grooves 17 makes the outer surface of the protective ring 8 rougher. When the fixing auxiliary block 16 contacts the anti-slip groove 17, it can be embedded... The insertion into the groove increases the interlocking force between the two. Multiple fixing auxiliary blocks 16 are fixedly connected to the inside of the adjacent side of the fixing ring 11. The fixing auxiliary blocks 16 are in close contact with the outside of the protective ring 8. The friction between the two is increased by utilizing the material properties of the blocks 16. In this way, the protective ring 8 can maintain a stable position when the device is subjected to vibration and external force, which further ensures the protective function of the protective ring 8 for the power connector 1. The adjacent side of the fixing auxiliary blocks 16 is slidably connected to the outside of the protective ring 8. The outside of the power connector 1 is slidably connected to the anti-slip connecting rotating block 19 and the outside of the power connector 1 is slidably connected to the rotating connecting block 20. The use of the anti-slip connecting rotating block 19 and the rotating connecting block 20 facilitates the connection of the connector. The outside of the anti-slip connecting rotating block 19 is slidably connected to the inside of the protective ring 8, and the outside of the rotating connecting block 20 is slidably connected to the inside of the protective ring 8.

[0038] Working Principle: When performing cable joint protection work, the first step is to fit the protective ring 8 onto the outside of the power connector 1, building the first physical protective barrier for the entire joint structure. During normal cable operation, the insulating sleeve 2, with its excellent insulation performance, forms a synergistic protection system with the tightly fitting sealing gasket 3, effectively blocking the current leakage path, reliably achieving electrical isolation, and ensuring the safety of circuit operation. In case of an emergency where the pressure inside the joint rises abnormally due to faults or other reasons, the electric control valve 7 will be activated first, and the high-pressure airflow will be transmitted through the connecting pipe 4 to the uniform air outlet plate 5 for stable and safe discharge. When the electric control valve 7 malfunctions, the pressure will exceed the preset withstand limit of the explosion-proof membrane 6, causing it to rupture and release pressure. At the same time, the anti-corrosion layer 10 wrapped on the outside can resist the erosion of various corrosive media, and the waterproof layer 9 can effectively block water vapor penetration. These multi-layer protective structures work together to provide comprehensive and reliable safety protection for the cable joint 1 from different dimensions, ensuring the stable operation of the cable system under complex working conditions and extending the service life of the power connector.

[0039] The operator inserts the threaded plug 13 through the control post 12 into the connecting fixing plate 15, and tightens the threaded cap 14 to achieve a tight fit during rotation. At this time, the fixing auxiliary block 16 is embedded in the anti-slip groove 17 of the protective ring 8. During the installation process, the anti-slip connecting rotating block 19 and the rotating connecting block 20 slide along the inside of the protective ring 8 to assist in adjusting the joint angle. The control post 12 adjusts the spacing of the fixing ring 11 according to the cable interface to ensure that the protective ring 8 and the power connector 1 maintain the best fit. The stepped fastening of the threaded plug 13 achieves uniform force through the limiting effect of the control post 12, preventing the protective ring 8 from shifting due to vibration.

[0040] 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. A joint protection device for overhead insulated cables, comprising a power connector (1), characterized in that: The power connector (1) is slidably connected to a protective ring (8), and the power connector (1) is fixedly connected to the inside and outside with various protection mechanisms. The protective ring (8) is slidably connected to a fastening mechanism. The multiple protection mechanisms include two insulating sleeves (2), the outer sides of which are fixedly connected to the inner walls of the power connector (1). A sealing gasket (3) is fixedly connected to the inner walls of the insulating sleeves (2). Two connecting pipes (4) are fixedly connected to the inner sides of the power connector (1). An electric control valve (7) is fixedly connected to the outer side of one of the connecting pipes (4), and an explosion-proof membrane (6) is fixedly connected to the inner side of the other connecting pipe (4). A uniform air outlet assembly is fixedly connected to the inner side of the connecting pipe (4).

2. The joint protection device for overhead insulated cables according to claim 1, characterized in that: The uniform air outlet assembly includes two uniform air outlet plates (5), the outside of which is fixedly connected to the inside of the connecting pipe (4), and the inside of the connecting pipe (4) is provided with an air outlet hole (18).

3. The joint protection device for overhead insulated cables according to claim 1, characterized in that: The fastening mechanism includes multiple fixing rings (11), with adjacent sides of the fixing rings (11) slidably connected to the outside of the protective ring (8), and multiple connecting fixing plates (15) fixedly connected to adjacent sides of every two fixing rings (11).

4. The joint protection device for overhead insulated cables according to claim 1, characterized in that: The power connector (1) is fixedly connected to a waterproof layer (9), and the waterproof layer (9) is fixedly connected to an anti-corrosion layer (10).

5. A joint protection device for overhead insulated cables according to claim 3, characterized in that: Each pair of the connecting fixing plates (15) is internally slidably connected with a threaded plug (13), and the bottom of the threaded plug (13) is threadedly connected with a threaded cap (14).

6. The joint protection device for an overhead insulated cable according to claim 5, characterized in that: The threaded plug (13) is externally slidably connected to a distance control post (12), and the upper and lower sides of the distance control post (12) are slidably connected to the adjacent side of each pair of connecting fixing plates (15).

7. A joint protection device for overhead insulated cables according to claim 3, characterized in that: The protective ring (8) has multiple anti-slip grooves (17) on its outside. Multiple fixing auxiliary blocks (16) are fixedly connected to the inside of the adjacent side of the fixing ring (11). The adjacent side of the fixing auxiliary blocks (16) is slidably connected to the outside of the protective ring (8).

8. The joint protection device for overhead insulated cables according to claim 1, characterized in that: The power connector (1) is slidably connected to an anti-slip rotating block (19) on the outside, and a rotating connecting block (20) is slidably connected to the outside of the power connector (1). The anti-slip rotating block (19) is slidably connected to the outside of the protective ring (8), and the rotating connecting block (20) is slidably connected to the outside of the protective ring (8).

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