Dry-type insulated cable terminal

Abstract

The utility model relates to the technical field of insulated cable terminals, and discloses a dry-type insulated cable terminal which comprises cable bodies at the front end and the rear end, the outer wall of the cable body at the front end is fixedly connected with an installation head, the outer wall of the cable body at the rear end is fixedly connected with a butt joint, and the outer wall of the installation head is in threaded connection with a rotating ring. Fixing pipes are fixedly connected to the four sides of the outer wall of the front end of the mounting head, pressing heads are slidably connected to the inner walls of the front ends of the fixing pipes, clamping claws are connected to the inner walls of the pressing heads through dismounting sets, a bearing ring is fixedly connected to the inner wall of the butt joint, and a plurality of connectors are fixedly connected to the front end of the bearing ring. According to the cable terminal, the rotating ring is rotated to drive the extrusion ring to move through the connecting ring, the rubber belt is extruded to be tightly attached to the connecting gap, the sealing performance is remarkably improved, the mounting and dismounting process is simplified through the design, the sealing performance and the operation efficiency are improved, and long-term stable operation of the cable terminal is ensured.

Description

Technical Field

[0001] This utility model relates to the field of insulated cable terminal technology, and in particular to a dry-type insulated cable terminal. Background Technology

[0002] Dry-type insulated cable terminations are structural components used to connect and secure the ends of insulated cables, and are widely used in power systems. They employ solid insulating materials (such as silicone rubber and epoxy resin) and a sealed design to ensure the cable's internal dryness and maintain insulation performance. The prefabricated sealed structure requires precise alignment for installation, and on-site assembly may require specialized tools (such as hydraulic devices) to apply significant pressure, resulting in cumbersome operation. Furthermore, disassembly requires damaging the sealing layer or using special tools, impacting maintenance efficiency and convenience. This inconvenience not only limits their application in scenarios involving frequent installation and disassembly but may also lead to unstable cable connections or increased leakage risks, potentially impacting the reliability and safety of the power system.

[0003] In response to this technical problem, this application proposes a dry-insulated cable terminal. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a dry-insulated cable terminal, which simplifies the installation and disassembly process, improves sealing performance and operational efficiency, and ensures the long-term stable operation of the cable terminal, thereby solving the technical problems described in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] A dry-insulated cable terminal includes cable bodies at both ends. An installation head is fixedly connected to the outer wall of the front cable body, and a connector is fixedly connected to the outer wall of the rear cable body. A rotating ring is threadedly connected to the outer wall of the installation head. Fixing tubes are fixedly connected to all four sides of the outer wall of the front end of the installation head. A pressing head is slidably connected to the inner wall of the front end of the fixing tube. A clamping claw is connected to the inner wall of the pressing head via a disassembly assembly. A bearing ring is fixedly connected to the inner wall of the connector, and several connectors are fixedly connected to the front end of the bearing ring.

[0007] Furthermore, the disassembly assembly includes a deflector head rotatably connected to the front end of the inner wall of the pressing head, and a return spring is fixedly connected to the outer wall of each deflector head, with the other end of each return spring fixedly connected to the inner wall of the fixing tube.

[0008] Furthermore, a second sliding block is fixedly connected to the rear right end of the inner wall of the fixed tube, and a first sliding block is fixedly connected to the front right end of the inner wall of the fixed tube.

[0009] Furthermore, the upper and lower ends of the inner wall of the pressing head are rotatably connected to connecting rods, and the opposite ends of the connecting rods are rotatably connected to traction plates.

[0010] Furthermore, each of the inner walls of the rear end of the mounting head is fixedly connected to a fixing ring, and each of the upper and lower sides of the rear end of the fixing ring is rotatably connected to a clamping claw. Each of the opposite ends of the traction plate is rotatably connected to the opposite end of the clamping claw, and the opposite end of the clamping claw is detachably connected to the outer wall of the connector.

[0011] Furthermore, a connecting ring is rotatably connected to the inner wall of the rotating ring, a compression ring is fixedly connected to the inner wall of the connecting ring, and the outer wall of the compression ring is slidably connected to and penetrates the inner wall of the mounting head.

[0012] Furthermore, a rubber band is fixedly connected to the inner wall of the mounting head, and the outer wall of the extrusion ring and the inner wall of the rubber band are in close contact.

[0013] The beneficial effects of this utility model are as follows:

[0014] During installation, pressing the pressing head causes it to retract along the fixed tube. The deflecting head, under the action of the return spring, tilts and slides between slide blocks one and two, thus limiting the pressing head's position. The connecting rod drives the traction plate to retract the clamping claws, and the fixing ring clamps the connector, enabling rapid assembly of the installation head and the butt joint. Pressing the pressing head again allows the deflecting head to slide out, the return spring resets the pressing head, and the clamping claws release, facilitating disassembly. Rotating the rotating ring, through the connecting ring, drives the compression ring to move, compressing the rubber strip to tightly seal the connection gap, significantly improving sealing. This design simplifies the installation and disassembly process, improves sealing and operational efficiency, and ensures the long-term stable operation of the cable terminal. Attached Figure Description

[0015] Figure 1 This is a perspective view of a dry-insulated cable terminal proposed in this utility model.

[0016] Figure 2 This is a half-sectional view of a butt joint of a dry-insulated cable terminal proposed in this utility model.

[0017] Figure 3 This is a half-sectional view of the connecting ring of a dry-insulated cable terminal proposed in this utility model.

[0018] Figure 4 This is a half-sectional view of the pressing head of a dry-insulated cable terminal proposed in this utility model.

[0019] Figure 5 This is a half-sectional view of the fixing tube for a dry-insulated cable terminal proposed in this utility model.

[0020] In the diagram: 1-Cable body, 2-Mounting head, 3-Connector, 4-Rotating ring, 5-Connecting ring, 6-Crushing ring, 7-Bearing ring, 8-Fixing tube, 9-Pressing head, 10-Rubber belt, 11-Deflection head, 12-Reset spring, 13-Connecting rod, 14-Traction plate, 15-Clamping claw, 16-Fixing ring, 17-Slide block one, 18-Slide block two, 19-Connector. Detailed Implementation

[0021] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0022] In the description of this application, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Reference Figure 1 and Figure 4 and Figure 5 An embodiment of this utility model provides: a dry-type insulated cable terminal, including cable bodies 1 at both ends. An installation head 2 is fixedly connected to the outer wall of the front cable body 1, and a connector 3 is fixedly connected to the outer wall of the rear cable body 1. A rotating ring 4 is threadedly connected to the outer wall of the installation head 2. Fixing tubes 8 are fixedly connected to all four sides of the front outer wall of the installation head 2. A pressing head 9 is slidably connected to the inner wall of the front end of the fixing tube 8. A clamping claw 15 is connected to the inner wall of the pressing head 9 through a disassembly assembly. A bearing ring 7 is fixedly connected to the inner wall of the connector 3. Several connectors 19 are fixedly connected to the front end of the bearing ring 7.

[0024] The disassembly assembly includes a deflector head 11 rotatably connected to the front end of the inner wall of the pressing head 9. A return spring 12 is fixedly connected to the outer wall of the deflector head 11. The other end of the return spring 12 is fixedly connected to the inner wall of the fixing tube 8. A second sliding block 18 is fixedly connected to the rear right end of the inner wall of the fixing tube 8. A first sliding block 17 is fixedly connected to the front right end of the inner wall of the fixing tube 8. A connecting rod 13 is rotatably connected to both the upper and lower ends of the inner wall of the pressing head 9. A traction plate 14 is rotatably connected to the opposite end of the connecting rod 13. A fixing ring 16 is fixedly connected to the inner wall of the rear end of the mounting head 2. A clamping claw 15 is rotatably connected to both the upper and lower sides of the rear end of the fixing ring 16. The opposite end of the traction plate 14 is rotatably connected to the opposite end of the clamping claw 15. The opposite end of the clamping claw 15 is detachably connected to the outer wall of the connecting head 19.

[0025] Specifically: In the installation process of dry-type insulated cable terminals, the connection between the installation head 2 and the connector 3 is a crucial step. First, the operator needs to press the pressing head 9 to retract it along the inside of the fixed tube 8. During the movement of the pressing head 9, the deflecting head 11 remains tilted under the elastic force of the return spring 12. This tilted state allows the deflecting head 11 to slide along the outside of the first slide block 17 into the space between the second slide block 18 and the first slide block 17, thereby ensuring that the pressing head 9 remains in a limited position after being pressed.

[0026] At the same time, under the squeezing action of the pressing head 9, the connecting rod 13 drives the traction plate 14 to cause the clamping claw 15 to retract relatively. This retraction action allows the fixing ring 16 to firmly clamp the connecting head 19, thereby achieving stable assembly between the mounting head 2 and the mating head 3. This design not only simplifies the installation process, but also improves the reliability and safety of the connection.

[0027] When disassembly is required, the operator only needs to press the pressing head 9 again. At this time, the deflecting head 11 will slide out along the inside of the first slide block 17 and the second slide block 18, and under the elastic force of the return spring 12, the pressing head 9 will be reset. During the reset process, the traction plate 14 drives the clamping claw 15 to release the squeezing force on the connector 19, so that the mounting head 2 and the mating head 3 can be easily disassembled. This design not only facilitates the disassembly process, but also reduces potential damage to the cable terminal. In summary, this linkage design of the pressing head 9, deflecting head 11, return spring 12, first slide block 17, second slide block 18, connecting rod 13, traction plate 14, clamping claw 15 and fixing ring 16 greatly simplifies the installation and disassembly process of dry-type insulated cable terminals and improves operating efficiency and safety.

[0028] Reference Figure 2 and Figure 3 A connecting ring 5 is rotatably connected to the inner wall of the rotating ring 4. A compression ring 6 is fixedly connected to the inner wall of the connecting ring 5. The outer wall of the compression ring 6 is slidably connected to and passes through the inner wall of the mounting head 2. A rubber belt 10 is fixedly connected to the inner wall of the mounting head 2. The outer wall of the compression ring 6 and the inner wall of the rubber belt 10 are in close contact.

[0029] Specifically: During the installation of dry-type insulated cable terminals, sealing is one of the key factors to ensure the long-term stable operation of the equipment. In order to improve the sealing performance after the installation head 2 and the connector 3 are connected, the operator needs to achieve this goal by rotating the rotating ring 4. The rotating ring 4 drives the compression ring 6 to move to one side through the connecting ring 5. This movement allows the compression ring 6 to apply uniform compression force to the rubber strip 10. Under the action of the compression force, the rubber strip 10 can completely fit the connection gap between the installation head 2 and the connector 3, thereby effectively preventing external moisture, dust or other impurities from entering the connection part. This design not only simplifies the sealing operation process, but also significantly improves the sealing effect.

[0030] The elastic material of the rubber band 10 can adapt to the irregular shape of the connection gap between the mounting head 2 and the connector 3, ensuring the completeness and reliability of the seal. In addition, the movement of the compression ring 6 is achieved by the linkage of the rotating ring 4 and the connecting ring 5. This mechanical structure design makes the operation more convenient and avoids the problem of uneven sealing caused by improper manual operation.

[0031] In practical applications, this sealing method is particularly suitable for dry-insulated cable terminals because dry-insulated cables have extremely high requirements for sealing performance. Any tiny gap may lead to a decrease in insulation performance or even cause equipment failure. Through the cooperation of rotating ring 4, connecting ring 5 and squeezing ring 6, rubber tape 10 can tightly fit the connection gap, ensuring that the cable terminal can maintain excellent insulation performance and long-term stability even in harsh environments.

[0032] In summary, the coordinated design of the rotating ring 4, connecting ring 5, extrusion ring 6, and rubber belt 10 not only improves the sealing performance of the dry-insulated cable terminal after connection, but also simplifies the operation process, reduces maintenance costs, and provides a strong guarantee for the reliable operation of the cable terminal.

[0033] Working principle: When the mounting head 2 and the connector 3 are connected, the pressing head 9 is pressed to retract along the fixed tube 8. When the pressing head 9 moves, the deflecting head 11 at the pressing head 9 is kept tilted by the elastic force of the return spring 12, so that the deflecting head 11 slides along the outside of the first slide block 17 into the space between the second slide block 18 and the first slide block 17, so that the pressing head 9 remains in the limit position after being pressed.

[0034] Furthermore, under the pressure of the pressing head 9, the connecting rod 13 drives the traction plate 14, causing the clamping claw 15 to retract relatively, so that the fixing ring 16 clamps the connecting head 19, facilitating the assembly between the mounting head 2 and the mating head 3.

[0035] Pressing the pressing head 9 again will cause the deflecting head 11 to slide out along the slide block 17 and slide block 18. Under the elastic force of the return spring 12, the pressing head 9 will be reset, thereby causing the traction plate 14 to drive the clamping claw 15 to release the squeezing force on the connector 19, so that the mounting head 2 and the connector 3 can be disassembled, making it convenient for both to start disassembly and installation.

[0036] When the rotating ring 4 moves the extrusion ring 6 to one side via the connecting ring 5, the extrusion ring 6 extrudes the rubber belt 10, making the rubber belt 10 completely fit the connection gap between the mounting head 2 and the connector 3, thereby improving the sealing performance after the device is connected.

[0037] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A dry-insulated cable terminal, comprising cable bodies (1) at both ends, characterized in that: The cable body (1) at the front end is fixedly connected to the outer wall of the cable body (1) with an installation head (2) and the cable body (1) at the rear end is fixedly connected to the outer wall of the cable body (1) with a connector (3). The mounting head (2) has a rotating ring (4) threadedly connected to its outer wall. The mounting head (2) has a fixing tube (8) fixedly connected to all four sides of its front end outer wall. The fixing tube (8) has a pressing head (9) slidably connected to its front end inner wall. The pressing head (9) has a clamping claw (15) connected to its inner wall via a disassembly assembly. The inner wall of the connector (3) is fixedly connected to a bearing ring (7), and the front end of the bearing ring (7) is fixedly connected to several connectors (19).

2. A dry-type insulated cable terminal according to claim 1, characterized in that: The disassembly assembly includes a deflector head (11) rotatably connected to the front end of the inner wall of the pressing head (9). A return spring (12) is fixedly connected to the outer wall of the deflector head (11), and the other end of the return spring (12) is fixedly connected to the inner wall of the fixing tube (8).

3. A dry-type insulated cable terminal according to claim 1, characterized in that: The right rear side of the inner wall of the fixed tube (8) is fixedly connected with a second sliding block (18), and the right front side of the inner wall of the fixed tube (8) is fixedly connected with a first sliding block (17).

4. A dry-type insulated cable terminal according to claim 1, characterized in that: The inner wall of the pressing head (9) is rotatably connected to both the upper and lower ends of the inner wall, and the opposite ends of the connecting rods (13) are rotatably connected to the traction plates (14).

5. A dry-type insulated cable terminal according to claim 4, characterized in that: The inner wall of the rear end of the mounting head (2) is fixedly connected to a fixing ring (16). The upper and lower sides of the rear end of the fixing ring (16) are rotatably connected to clamping claws (15). The opposite end of the traction plate (14) is rotatably connected to the opposite end of the clamping claw (15). The opposite end of the clamping claw (15) is detachably connected to the outer wall of the connector (19).

6. A dry-type insulated cable terminal according to claim 1, characterized in that: The inner wall of the rotating ring (4) is rotatably connected to a connecting ring (5), and the inner wall of the connecting ring (5) is fixedly connected to a compression ring (6). The outer wall of the compression ring (6) is slidably connected to and penetrates the inner wall of the mounting head (2).

7. A dry-type insulated cable terminal according to claim 6, characterized in that: A rubber band (10) is fixedly connected to the inner wall of the mounting head (2), and the outer wall of the extrusion ring (6) and the inner wall of the rubber band (10) are in contact.

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