Cable fusion joint

Abstract

The utility model discloses a cable fusion joint, which comprises a pair of cables and a fusion welding section between the pair of cables, a pair of cable bodies are fixedly sleeved with conical fixing sleeves, the outer wall of each conical fixing sleeve is provided with an annular groove along the circumferential direction, and a sealing gasket with the same taper as the conical fixing sleeve is embedded in each annular groove. The utility model relates to the technical field of cable welding, the conical fixing sleeves are matched with the sealing gaskets, and the first connectors, the second connectors and the conical fixing sleeves are tightly connected, so that a plurality of groups of sealing structures are formed, and the sealing performance of the cable is improved. The sealing gasket and the conical fixing sleeve are the same in taper and can be tightly attached, and water is effectively prevented from entering. And the first connecting ring and the second connecting ring are screwed through threads, so that the sealing effect is enhanced, and the waterproof performance of the cable welding section is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable fusion splicing technology, specifically to a cable fusion joint. Background Technology

[0002] In power transmission systems, cable connections are a crucial link in ensuring stable power delivery. While cable fusion splicing, a common connection method, achieves reliable connections between cable conductors, the waterproofing of the fusion splice section remains a significant factor affecting cable lifespan and power transmission safety. Existing waterproofing measures for cable fusion splices have several shortcomings. Some methods use simple wrapping of sealing materials, which, over time, are prone to aging and detachment, leading to decreased waterproofing performance. This allows moisture to penetrate the fusion splice, causing reduced cable insulation performance, conductor corrosion, and in severe cases, even short circuits, impacting the stability of power supply. Furthermore, existing fusion-spliced ​​cables are prone to seal failure under tensile or bending forces, failing to effectively adapt to various operating conditions. With the power industry's increasing demands for cable reliability and safety, there is an urgent need for a cable fusion splice that can effectively address these issues and provide reliable waterproofing protection for the cable fusion splice section. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a cable fusion splice, which solves the problem of poor protection in existing cable fusion splices.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cable fusion joint, comprising a pair of cables and a fusion section between the pair of cables. Each pair of cable bodies is fixedly fitted with a conical fixing sleeve. The outer wall of the conical fixing sleeve is provided with an annular groove along the circumferential direction. A sealing gasket with the same taper as the conical fixing sleeve is embedded in the annular groove. A first connector and a second connector are movably fitted on the outer sides of the pair of conical fixing sleeves, respectively. Both the first connector and the second connector are provided with a conical cavity matching the conical fixing sleeve. A first connecting ring is fixedly provided on the side of the first connector near the fusion section. A second connecting ring is rotatably installed on the side of the second connector near the fusion section. The second connecting ring is screwed onto the outside of the first connecting ring by a thread. A limiting component is provided between the first connector and the second connecting ring.

[0005] Preferably, the limiting component includes a sleeve fixedly disposed on the outer wall of the first connector, a sliding plate slidably disposed inside the sleeve, a pull pin installed at one end of the sliding plate and a pin installed at the other end, through holes for the pull pin and the pin to pass through at both ends of the sleeve, a spring fitted on the outside of the pin installed between the sliding plate and the inner wall of the sleeve, and a limiting ring fixedly disposed on the outer wall of the second connecting ring, the limiting ring having a plurality of limiting holes for the pin to be inserted along the circumferential direction.

[0006] Preferably, both the first connector and the second connector are provided with positioning seats at their tails, and positioning pins are fixedly provided on the positioning seats. The tapered fixing sleeve is provided with a positioning hole for the positioning pin to be inserted on the side away from the welding section.

[0007] Preferably, the second connector is fixedly provided with an elastic compression ring on the side near the welding section, and the first connector abuts against the elastic compression ring.

[0008] Preferably, an annular rail is fixedly provided on one side of the second connecting ring, and an annular groove matching the annular rail is provided on the second connecting head.

[0009] Preferably, the outer wall of the first connecting ring is provided with an external thread, and the inner wall of the second connecting ring is provided with an internal thread that matches the external thread.

[0010] Beneficial effects

[0011] This utility model provides a cable fusion joint, which has the following advantages:

[0012] The fit between the tapered retaining sleeve and the sealing gasket, along with the tight connection between the first connector, the second connector, and the tapered retaining sleeve, forms a multi-layered sealing structure. The sealing gasket and the tapered retaining sleeve have the same taper, ensuring a tight fit and effectively preventing moisture ingress. The first connecting ring and the second connecting ring are screwed together, enhancing the sealing effect and ensuring the waterproof performance of the cable splice section.

[0013] In the limiting assembly, the pull pin pulls the slide plate, causing the pin to disengage from the limiting hole, which allows the second connecting ring to rotate, facilitating installation and disassembly; after the pull pin is released, the spring pushes the slide plate to insert the pin into the limiting hole, locking the second connecting ring in the appropriate position to prevent it from loosening during operation and ensuring the stability of the joint.

[0014] The positioning seat and positioning pin allow the first connector and the second connector to be accurately installed on the conical fixing sleeve, ensuring the relative positional accuracy of each component, facilitating installation and reducing installation errors.

[0015] The elastic compression ring, when the first connecting ring and the second connecting ring are tightened, can generate elastic deformation and abut against the first connecting ring, further ensuring the reliability of the seal and making it easy to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a first partial enlarged structural schematic diagram of the present invention.

[0018] Figure 3 This is a second enlarged structural diagram of the present invention.

[0019] In the diagram: 1. Cable; 2. Welded section; 3. Conical fixing sleeve; 4. Sealing gasket; 5. First connector; 6. Second connector; 7. First connecting ring; 8. Second connecting ring; 9. Sleeve; 10. Slide plate; 11. Pull pin; 12. Pin; 13. Spring; 14. Limiting ring; 15. Positioning seat; 16. Positioning pin; 17. Elastic compression ring; 18. Circular rail. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a cable fusion joint, including a pair of cables 1 and a fusion section 2 between the pair of cables 1. Each pair of cables 1 is fixedly fitted with a conical fixing sleeve 3. The outer wall of the conical fixing sleeve 3 is provided with an annular groove along the circumferential direction. A sealing gasket 4 with the same taper as the conical fixing sleeve 3 is embedded in the annular groove. A first connector 5 and a second connector 6 are respectively movably fitted on the outer side of the pair of conical fixing sleeves 3. The first connector 5 and the second connector 6 are each provided with a conical cavity matching the conical fixing sleeve 3. A first connecting ring 7 is fixedly provided on the side of the first connector 5 near the fusion section 2. A second connecting ring 8 is rotatably installed on the side of the second connector 6 near the fusion section 2. The second connecting ring 8 is screwed to the outside of the first connecting ring 7 by a thread. A limiting component is provided between the first connector 5 and the second connecting ring 8.

[0022] By adopting the above technical solution, after connecting the fusion joints 2 of a pair of cables 1, the first connector 5 and the second connector 6 are respectively fitted onto the outside of the conical fixing sleeve 3, so that the conical cavity of the first connector 5 fits into the conical fixing sleeve 3, and the second connector 6 is similarly fitted. Then, the second connecting ring 8 is screwed onto the outside of the first connecting ring 7, completing the installation of the fusion joint of the cable 1, realizing the initial sealing and connection of the fusion joint 2 of the cable 1, and providing a foundation for subsequent waterproofing and stable operation.

[0023] In this embodiment, the limiting component includes a sleeve 9 fixedly disposed on the outer wall of the first connector 5. A sliding plate 10 is slidably disposed inside the sleeve 9. A pull pin 11 is installed at one end of the sliding plate 10 and a pin 12 is installed at the other end. Through holes are provided at both ends of the sleeve 9 for the pull pin 11 and the pin 12 to pass through. A spring 13 fitted on the outside of the pin 12 is installed between the sliding plate 10 and the inner wall of the sleeve 9. A limiting ring 14 is fixedly fitted on the outer wall of the second connecting ring 8. The limiting ring 14 is provided with a plurality of limiting holes along the circumferential direction for the pin 12 to be inserted.

[0024] By adopting the above technical solution, during installation, pulling the pull pin 11 causes the slide plate 10 to slide inside the sleeve 9, and the pin 12 disengages from the limiting hole on the limiting ring 14. At this time, the second connecting ring 8 can be rotated to screw into the first connecting ring 7. After screwing, the pull pin 11 is released, and the spring 13 pushes the slide plate 10, causing the pin 12 to insert into the corresponding limiting hole, locking the second connecting ring 8 and ensuring that the second connecting ring 8 will not loosen after installation, thus improving the stability and reliability of the cable 1 fusion joint.

[0025] In this embodiment, the first connector 5 and the second connector 6 are both provided with positioning seats 15 at their tails. Positioning pins 16 are fixedly provided on the positioning seats 15. The conical fixing sleeve 3 is provided with a positioning hole for the positioning pins 16 to be inserted on the side away from the welding section 2.

[0026] By adopting the above technical solution, when installing the first connector 5 and the second connector 6, the positioning pin 16 on the positioning seat 15 is inserted into the positioning hole on the conical fixing sleeve 3, so that the first connector 5 and the second connector 6 are accurately installed on the conical fixing sleeve 3, which improves the accuracy and convenience of installation, ensures the relative position accuracy between the components, and helps to improve the sealing performance and overall stability of the cable 1 fusion joint.

[0027] In this embodiment, the second connector 6 is further configured to have an elastic compression ring 17 fixedly provided on the side near the welding section 2, and the first connector 7 is pressed against the elastic compression ring 17.

[0028] By adopting the above technical solution, when tightening the first connecting ring 7 and the second connecting ring 8, the first connecting ring 7 presses against the elastic compression ring 17, and the elastic compression ring 17 undergoes elastic deformation, filling the gap at the connection part. During the operation of the cable 1, when the cable 1 is subjected to external force for stretching or bending, the elastic deformation of the elastic compression ring 17 can compensate for the displacement and maintain the sealing effect.

[0029] In this embodiment, the second connecting ring 8 is further provided with an annular rail 18 fixed on one side, and the second connecting head 6 is provided with an annular groove that matches the annular rail 18.

[0030] By adopting the above technical solution, during the process of rotating the second connecting ring 8 and screwing it onto the first connecting ring 7, the annular rail 18 slides in the annular groove, ensuring the smoothness of the rotation of the second connecting ring 8.

[0031] In this embodiment, the outer wall of the first connecting ring 7 is provided with an external thread, and the inner wall of the second connecting ring 8 is provided with an internal thread that matches the external thread.

[0032] By adopting the above technical solution, during installation, the second connecting ring 8 is aligned with the first connecting ring 7, and by rotating the second connecting ring 8, the internal thread of the inner wall of the second connecting ring 8 is screwed into the external thread of the outer wall of the first connecting ring 7, thereby achieving a tight connection between the first connecting ring 7 and the second connecting ring 8.

[0033] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0034] Example: First, a pair of cables 1 are fused together to ensure a secure connection between the conductors, completing the connection of the fused section 2 of cable 1. The first connector 5 and the second connector 6 are then fitted onto the outside of the conical fixing sleeve 3. The first connecting ring 7 and the second connecting ring 8 are then aligned. The second connecting ring 8 is rotated so that the internal thread on its inner wall engages with the external thread on the outer wall of the first connecting ring 7. As they tighten, the first connector 5 and the second connector 6 move closer to each other until they are both pressed against the conical fixing sleeve 3 inside, completing the connection. At this point, the positioning pin 16 is inserted into the positioning hole. To prevent the second connecting ring 8 from rotating due to external factors, the slide plate 10 can be pushed by the spring 13 to insert the pin 12 into the limiting hole on the limiting ring 14, locking the second connecting ring 8 in the appropriate position. When disassembly is required, the pull pin 11 is pulled first to retract the spring 13, separating the pin 12 from the limiting hole. Then, the second connecting ring 8 can be rotated in the opposite direction. This method is convenient to use.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable fusion splice, comprising a pair of cables (1) and a fusion joint (2) between the pair of cables (1), characterized in that, A pair of cables (1) are each fixedly fitted with a conical fixing sleeve (3). The outer wall of the conical fixing sleeve (3) is provided with an annular groove along the circumferential direction. A sealing gasket (4) with the same taper as the conical fixing sleeve (3) is embedded in the annular groove. A first connector (5) and a second connector (6) are respectively movably fitted on the outer side of the pair of conical fixing sleeves (3). The first connector (5) and the second connector (6) are each provided with a conical cavity that matches the conical fixing sleeve (3). A first connecting ring (7) is fixedly provided on the side of the first connector (5) near the welding section (2). A second connecting ring (8) is rotatably installed on the side of the second connector (6) near the welding section (2). The second connecting ring (8) is screwed to the outside of the first connecting ring (7) by a thread. A limiting component is provided between the first connector (5) and the second connecting ring (8).

2. A cable fusion splice according to claim 1, characterised in that, The limiting component includes a sleeve (9) fixedly disposed on the outer wall of the first connector (5), a sliding plate (10) is slidably disposed inside the sleeve (9), a pull pin (11) is installed at one end of the sliding plate (10), and a pin (12) is installed at the other end. Through holes are provided at both ends of the sleeve (9) for the pull pin (11) and the pin (12) to pass through. A spring (13) fitted on the outside of the pin (12) is installed between the sliding plate (10) and the inner wall of the sleeve (9). A limiting ring (14) is fixedly fitted on the outer wall of the second connecting ring (8), and a plurality of limiting holes for the pin (12) to be inserted are provided on the limiting ring (14) along the circumferential direction.

3. A cable fusion splice according to claim 2, wherein, The first connector (5) and the second connector (6) are both provided with a positioning seat (15) at their tails. A positioning pin (16) is fixedly provided on the positioning seat (15). The conical fixing sleeve (3) is provided with a positioning hole for the positioning pin (16) to be inserted on the side away from the welding section (2).

4. A cable fusion splice according to claim 3, wherein, The second connector (6) is fixedly provided with an elastic extrusion ring (17) on the side near the welding section (2), and the first connector (7) abuts against the elastic extrusion ring (17).

5. A cable fusion splice according to claim 1, wherein, The second connecting ring (8) is fixedly provided with an annular rail (18) on one side, and the second connector (6) is provided with an annular groove that matches the annular rail (18).

6. A cable fusion splice according to claim 4, wherein, The outer wall of the first connecting ring (7) is provided with an external thread, and the inner wall of the second connecting ring (8) is provided with an internal thread that matches the external thread.

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