Waterproof power cable

Abstract

The utility model relates to the technical field of power cables, and discloses a waterproof power cable, which comprises a power cable main body. And the connecting part waterproof mechanism is arranged at the end part of the power cable main body, and the connecting part waterproof mechanism is used for performing waterproofing on the connecting part of the power cable main body. According to the utility model, through the integral design of the waterproof mechanism at the joint, when the end parts of the power cable main bodies are connected, the end parts of the two power cable main bodies are respectively inserted into the inner cavities of the two connecting pipes, the connection of conductors is completed in the inner cavity of the closed connecting box, and then the cover plate is inserted into the opening of the closed connecting box; at this time, through the design of the rubber ring, the connection part of the connection pipe and the power cable main body can be sealed, and through the design of the rubber frame, the connection part of the closed connection box and the cover plate can be sealed, so that the waterproof function of the connection part is realized.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically to a waterproof power cable. Background Technology

[0002] Power cables are electrical devices specifically designed for transmitting and distributing electrical energy. They consist of a multi-layered protective structure comprised of a conductor, insulation layer, shielding layer, and protective layer. Their core function is to efficiently transmit high-power electrical energy in power systems, covering all voltage levels from 1kV low voltage to 500kV and above ultra-high voltage. They feature high-voltage, high-capacity transmission, adaptability to complex environments, and high safety. They are primarily used in urban underground power grids, power supply for industrial and mining enterprises, power plant lead-out lines, submarine power transmission, rail transit systems, and new energy fields. They are a key infrastructure for replacing overhead lines, achieving concealed wiring, and providing stable power supply in harsh environments.

[0003] During the laying of power cables, the ends need to be connected. After the connection, waterproofing is required. The traditional waterproofing method is to wrap insulating tape around the connection. If the operator is not skilled, gaps can easily be left on the tape, affecting the waterproofing effect. Utility Model Content

[0004] The purpose of this utility model is to provide a waterproof power cable, which solves the problem that the existing technology of using insulating tape to waterproof the connection of the cable has poor performance.

[0005] This utility model provides the following technical solution: a waterproof power cable, comprising:

[0006] Power cable body;

[0007] A waterproof mechanism at the connection point is provided at the end of the main body of the power cable and is used to waterproof the connection point of the main body of the power cable.

[0008] A protective waterproof mechanism is installed on the outer wall of the power cable body, and the protective waterproof mechanism is used to protect the outer wall of the power cable body;

[0009] The waterproof mechanism at the connection includes a closed connection box, with through holes on both sides of the closed connection box. Connecting pipes are fixedly connected to both sides of the closed connection box. Rubber rings are fixedly connected to the inner walls of the connecting pipes. A cover plate is movably inserted into the opening of the closed connection box. A rubber frame is fixedly fitted onto the outer wall of the cover plate. The end of the main body of the power cable is movably inserted into the inner cavity of the connecting pipe.

[0010] As a preferred embodiment of the above technical solution, a protrusion is fixedly connected to the outer wall of the cover plate, and a connecting bolt is threadedly connected to the protrusion, the threaded end of the connecting bolt being movably abutted against the outer wall of the closed connecting box.

[0011] As a preferred embodiment of the above technical solution, the top of the cover plate is fixedly connected to an external threaded pipe opening, the outer wall of the external threaded pipe opening is threadedly connected to an internal threaded cap, the top of the internal threaded cap is fixedly installed with a rotating handle, and the top of the cover plate is fixedly installed with a grip.

[0012] As a preferred embodiment of the above technical solution, the protective waterproof mechanism includes a first alloy protective strip and a second alloy protective strip, both of which are movably connected to the outer wall of the power cable body.

[0013] As a preferred embodiment of the above technical solution, a first assembly block is fixedly connected to the outer wall of the first alloy protective strip, and a second assembly block is fixedly connected to the outer wall of the second alloy protective strip, wherein a pin groove is provided on the second assembly block.

[0014] As a preferred embodiment of the above technical solution, a fitting block is fixedly connected to the outer wall of the first assembly block, the fitting block is movably inserted into the inner cavity of the pin groove, a convex shaft is fixedly connected to the side of the fitting block away from the first assembly block, a limiting block is rotatably connected to the outer wall of the convex shaft, and a rubber block is fixedly connected to the side of the limiting block close to the first assembly block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model, through the overall design of the waterproof mechanism at the connection point, allows for the connection of the ends of the power cable body. The ends of the two power cable bodies are respectively inserted into the inner cavities of two connecting pipes, and the conductor connection is completed within the inner cavity of the sealed connection box. Subsequently, the cover plate is inserted into the opening of the sealed connection box. At this point, the rubber ring design seals the connection between the connecting pipe and the power cable body, and the rubber frame design seals the connection between the sealed connection box and the cover plate. This achieves the function of waterproofing the connection point of the power cable body, avoiding the problem of entanglement gaps that can easily occur when using insulating tape for waterproofing, thus ensuring the waterproofing effect. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a schematic diagram of the waterproof mechanism at the connection point of this utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the cover plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the protective waterproof mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the No. 1 and No. 2 assembly blocks of this utility model.

[0022] In the diagram: 1. Main body of power cable; 2. Waterproof mechanism at connection; 21. Enclosed connection box; 22. Through hole; 23. Connecting pipe; 24. Rubber ring; 25. Cover plate; 26. Rubber frame; 27. Protruding block; 28. Connecting bolt; 29. ​​External threaded pipe opening; 291. Internal threaded cap; 292. Turning handle; 293. Grip; 3. Protective waterproof mechanism; 31. No. 1 alloy protective strip; 32. No. 2 alloy protective strip; 33. No. 1 combination block; 34. No. 2 combination block; 35. Fitting block; 36. Protruding shaft; 37. Limiting block; 38. Rubber block. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a waterproof power cable, comprising:

[0025] Power cable body 1;

[0026] Waterproofing mechanism 2 at the connection point is installed at the end of the power cable body 1 and is used to waterproof the connection point of the power cable body 1.

[0027] The protective waterproof mechanism 3 is installed on the outer wall of the power cable body 1 and is used to protect the outer wall of the power cable body 1.

[0028] The waterproof mechanism 2 at the connection includes a closed connection box 21. Both sides of the closed connection box 21 have through holes 22. Both sides of the closed connection box 21 are fixedly connected to connecting pipes 23. Rubber rings 24 are fixedly connected to the inner walls of the connecting pipes 23. A cover plate 25 is movably inserted into the opening of the closed connection box 21. A rubber frame 26 is fixedly fitted onto the outer wall of the cover plate 25. The ends of the power cable bodies 1 are movably inserted into the inner cavity of the connecting pipes 23. When connecting the ends of the power cable bodies 1, the ends of the two power cable bodies 1 are respectively inserted into the two connecting pipes 23. Inside the cavity of the connector 23, the conductor of the power cable body 1 passes through the through hole 22 and enters the closed connection box 21. The conductor is then connected inside the cavity of the closed connection box 21. Next, the cover plate 25 is inserted into the opening of the closed connection box 21. At this time, the rubber ring 24 seals the connection between the connector 23 and the power cable body 1, and the rubber frame 26 seals the connection between the closed connection box 21 and the cover plate 25. This achieves the function of waterproofing the connection of the power cable body 1, improving the waterproofing effect and facilitating user use.

[0029] As one implementation method in this embodiment, such as Figure 2 As shown, a protrusion 27 is fixedly connected to the outer wall of the cover plate 25, and a connecting bolt 28 is threadedly connected to the protrusion 27. The threaded end of the connecting bolt 28 is in movable contact with the outer wall of the closed connecting box 21. After the cover plate 25 is fully inserted into the opening of the closed connecting box 21, the connecting bolt 28 is manually tightened to make the connecting bolt 28 press against the outer wall of the closed connecting box 21 to fix the position of the cover plate 25 and prevent it from falling off.

[0030] As one implementation method in this embodiment, such as Figure 2 As shown, the top of the cover plate 25 is fixedly connected to an external threaded pipe port 29. An internal threaded cap 291 is threadedly connected to the outer wall of the external threaded pipe port 29. A rotating handle 292 is fixedly installed on the top of the internal threaded cap 291, and a handle 293 is fixedly installed on the top of the cover plate 25. Before inserting the cover plate 25 into the closed connection box 21, rotate the internal threaded cap 291 from the rotating handle 292 to loosen it from the external threaded pipe port 29, thereby releasing the sealing effect and avoiding the problem of difficulty in inserting the cover plate 25 due to air pressure. This improves the smoothness of inserting the cover plate 25 into place. After insertion, tighten the internal threaded cap 291 to restore the seal.

[0031] As one implementation method in this embodiment, such as Figure 4As shown, the protective waterproof mechanism 3 includes a first alloy protective strip 31 and a second alloy protective strip 32. Both the first alloy protective strip 31 and the second alloy protective strip 32 are movably connected to the outer wall of the power cable body 1. The first alloy protective strip 31 and the second alloy protective strip 32 are both made of aluminum alloy. When the power cable body 1 is laid in cable trenches and cable wells, these places are places where animals such as rodents can easily enter. Animals can easily gnaw on the power cable body 1, causing the waterproof function of the power cable body 1 to fail and affecting safety. In view of this usage environment, installing the first alloy protective strip 31 and the second alloy protective strip 32 on the outer wall of the power cable body 1 can achieve the anti-gnawing function and further improve the waterproof effect of the power cable body 1.

[0032] As one implementation method in this embodiment, such as Figure 5 As shown, a first assembly block 33 is fixedly connected to the outer wall of the first alloy protective strip 31, and a second assembly block 34 is fixedly connected to the outer wall of the second alloy protective strip 32. The second assembly block 34 has a pin groove. The connection relationship between the first assembly block 33 and the second assembly block 34 is designed to facilitate the assembly of the first alloy protective strip 31 and the second alloy protective strip 32 on the outer wall of the power cable body 1.

[0033] As one implementation method in this embodiment, such as Figure 5 As shown, a fitting block 35 is fixedly connected to the outer wall of the first assembly block 33. The fitting block 35 is movably inserted into the inner cavity of the pin groove. A convex shaft 36 is fixedly connected to the side of the fitting block 35 away from the first assembly block 33. A limit block 37 is rotatably connected to the outer wall of the convex shaft 36. A rubber block 38 is fixedly connected to the side of the limit block 37 near the first assembly block 33. When assembling the first alloy protective strip 31 and the second alloy protective strip 32 on the outer wall of the power cable body 1, the fitting block 35 is fixedly connected to the first assembly block 33. The mating block 35 is inserted into the pin groove of the second assembly block 34. Then, the limiting block 37 is rotated manually to prevent the limiting block 37 and the mating block 35 from overlapping in the axial direction. At this time, the limiting block 37 limits the pulling out of the mating block 35, thus completing the assembly of the first alloy protective strip 31 and the second alloy protective strip 32. Through the design of the rubber block 38, after the limiting block 37 is rotated, the rubber block 38 can fit tightly against the side of the second assembly block 34, which has the effect of preventing the limiting block 37 from rotating.

[0034] Working principle: When connecting the ends of the power cable body 1, the ends of the two power cable bodies 1 are respectively inserted into the inner cavities of the two connecting pipes 23. At the same time, the conductors of the power cable bodies 1 pass through the through holes 22 into the closed connecting box 21. Then, the conductor connection is completed in the inner cavity of the closed connecting box 21. Next, the cover plate 25 is inserted into the opening of the closed connecting box 21. At this time, the rubber ring 24 seals the connection between the connecting pipe 23 and the power cable body 1, and the rubber frame 26 seals the connection between the closed connecting box 21 and the cover plate 25, thus achieving the function of waterproofing the connection of the power cable bodies 1. Then, the connecting bolt 28 is manually inserted. Tighten the bolts to ensure that the connecting bolts 28 are pressed against the outer wall of the closed connecting box 21 to fix the position of the cover plate 25. When laying the main body of the power cable 1 in a location with high animal activity, assemble the No. 1 alloy protective strip 31 and the No. 2 alloy protective strip 32 on the outer wall of the main body of the power cable 1 to protect the main body of the power cable 1. During assembly, put the No. 1 alloy protective strip 31 and the No. 2 alloy protective strip 32 on the outer wall of the main body of the power cable 1, and at the same time insert the fitting block 35 on the No. 1 assembly block 33 into the pin groove of the No. 2 assembly block 34. Then manually rotate the limiting block 37 to ensure that the limiting block 37 and the fitting block 35 do not overlap axially.

[0035] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A waterproof power cable, characterized in that, include: Power cable body (1); Waterproof connection mechanism (2), which is provided at the end of the power cable body (1), is used to waterproof the connection of the power cable body (1); A protective waterproof mechanism (3) is provided on the outer wall of the power cable body (1) and is used to protect the outer wall of the power cable body (1). The waterproof mechanism (2) at the connection includes a closed connection box (21), with through holes (22) on both sides of the closed connection box (21). A connecting pipe (23) is fixedly connected to both sides of the closed connection box (21). A rubber ring (24) is fixedly connected to the inner wall of the connecting pipe (23). A cover plate (25) is movably inserted into the opening of the closed connection box (21). A rubber frame (26) is fixedly sleeved on the outer wall of the cover plate (25). The end of the power cable body (1) is movably inserted into the inner cavity of the connecting pipe (23).

2. The waterproof power cable according to claim 1, characterized in that: A protrusion (27) is fixedly connected to the outer wall of the cover plate (25), and a connecting bolt (28) is threadedly connected to the protrusion (27). The threaded end of the connecting bolt (28) is in movable contact with the outer wall of the closed connecting box (21).

3. A waterproof power cable according to claim 1, characterized in that: The top of the cover plate (25) is fixedly connected to an external threaded pipe opening (29), and an internal threaded cover (291) is threadedly connected to the outer wall of the external threaded pipe opening (29). A rotating handle (292) is fixedly installed on the top of the internal threaded cover (291), and a grip (293) is fixedly installed on the top of the cover plate (25).

4. A waterproof power cable according to claim 1, characterized in that: The protective waterproof mechanism (3) includes a first alloy protective strip (31) and a second alloy protective strip (32), both of which are movably connected to the outer wall of the power cable body (1).

5. A waterproof power cable according to claim 4, characterized in that: A first assembly block (33) is fixedly connected to the outer wall of the first alloy protective strip (31), and a second assembly block (34) is fixedly connected to the outer wall of the second alloy protective strip (32). The second assembly block (34) has a pin groove.

6. A waterproof power cable according to claim 5, characterized in that: A fitting block (35) is fixedly connected to the outer wall of the first assembly block (33). The fitting block (35) is movably inserted into the inner cavity of the pin groove. A convex shaft (36) is fixedly connected to the side of the fitting block (35) away from the first assembly block (33). A limiting block (37) is rotatably connected to the outer wall of the convex shaft (36). A rubber block (38) is fixedly connected to the side of the limiting block (37) close to the first assembly block (33).

Images