Damp-proof safe cross-linked polyethylene insulated power cable

Abstract

The invention relates to the technical field of power cables, and provides a moisture-proof safe cross-linked polyethylene insulated power cable, which comprises a plurality of metal conductors, insulating tube layers arranged on the outer sides of the plurality of metal conductors, insulating cylinder layers arranged among the outer sides of the plurality of insulating tube layers, a closed sleeve and a connecting sleeve, the closed sleeve is arranged on one side of the insulating cylinder layer, the closed sleeve is used for keeping closed between the insulating cylinder layer and the plurality of insulating tube layers, a plurality of sealed tube sections are communicated with the closed sleeve, the sealed tube sections are in one-to-one correspondence with the metal conductors, the metal conductors are moved into the sealed tube sections, and the metal conductors are moved out of the closed sleeve through the sealed tube sections; the connecting sleeve is arranged on one side of the sealing pipe section in a sealed mode. According to the technical scheme, the problem that in the using process of a cross-linked polyethylene insulated power cable in the prior art, a connecting area of a metal conductor and power equipment is prone to being affected with damp due to installation reasons is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and in particular to a moisture-proof and safe cross-linked polyethylene insulated power cable. Background Art

[0002] Cross-linked polyethylene insulated power cable is an object used in the prior art for transmitting electric energy. Cross-linked polyethylene insulated power cable is commonly used in low-voltage or medium-voltage power transmission systems. Cross-linked polyethylene insulated power cable consists of multiple metal (mostly copper or aluminum) conductors, each of which is provided with a plastic insulation layer on the outside. Multiple metal conductors are twisted together into a cable, and finally a layer of insulating sheath is extruded between the outsides of the multiple metal conductors to complete the production operation of the cross-linked polyethylene insulated power cable. When the prior art uses cross-linked polyethylene insulated power cable, the multiple metal conductors of the cross-linked polyethylene insulated power cable are usually peeled off and separated, and then the insulation layer on the outside of the metal conductor is peeled off to electrically connect the metal conductor to the corresponding power equipment.

[0003] In the prior art, each metal conductor is also made of multiple twisted metal wires. Therefore, in the actual process of electrically connecting the metal conductor to the power equipment, it is necessary to tighten the connection between the metal conductor and the connection area of the power equipment. In the process of connecting the metal conductor, the metal conductor will become loose during the extrusion process, and the multiple metal wires of the metal conductor will become loose. After the insulation layer on the outside of the metal conductor is stripped off, some small gaps will be generated between the insulation layer and the multiple metal wires. When the moisture content in the external ambient air is high, the moisture in the air can easily enter the insulation layer through the gaps between the insulation layer and the metal wires, causing the metal conductor to become damp and oxidize. In severe cases, the entire power transmission system connected to the cross-linked polyethylene insulated power cable may be short-circuited, affecting power safety. Summary of the Invention

[0004] The present invention provides a moisture-proof and safe cross-linked polyethylene insulated power cable, which is used to solve the problem in the prior art that the connection area between the metal conductor and the power equipment of the cross-linked polyethylene insulated power cable is easily affected by moisture due to installation reasons during use.

[0005] The technical solution of the present invention is as follows: a moisture-proof and safe cross-linked polyethylene insulated power cable, comprising a plurality of metal conductors, each of which is provided with an insulating tube layer on the outside of each of the plurality of metal conductors, an insulating barrel layer being provided between the outer sides of the plurality of insulating tube layers, and further comprising: A closed sleeve, which is arranged on one side of the insulating cylindrical layer and is used to maintain a seal between the insulating cylindrical layer and the multiple insulating tube layers. The closed sleeve is connected to a plurality of sealed tube sections, which correspond one to one with the metal conductors. The metal conductors are moved into the sealed tube sections and are removed from the closed sleeve through the sealed tube sections. A connecting sleeve, the connecting sleeve being sealingly arranged on one side of the sealing pipe section, and the connecting sleeve being provided with a screwing connection structure for screwing a plurality of metal wires; A metal core, an insulating tube section is provided on one side of the screwed connection structure, the insulating tube section passes through the closed sleeve, a metal core is provided in the insulating tube section, the metal core is electrically connected to the stranded wire drum, a slot is provided on one side of the insulating tube section, and the metal core is exposed through the slot.

[0006] In order to achieve a sealed connection between the closed sleeve and the insulating cylindrical layer, an annular heat shrinkable layer is further provided inside the closed sleeve, and the annular heat shrinkable layer is sealed and connected to the insulating cylindrical layer after being heated.

[0007] In order to keep the metal conductor removed from the insulating tube section sealed, further, the side of the sealing tube section connected to the closed sleeve is set as a bucket-shaped tube section, and a connecting ring sleeve is fixed on the other side of the sealing tube section.

[0008] In order to ensure a sealed connection between the sealing pipe section and the connecting sleeve, further, the connecting sleeve is fixedly connected to a side circumference close to the connecting ring sleeve with multiple arc-shaped insertion pieces, the connecting ring sleeve is provided with multiple arc-shaped slots, the arc-shaped insertion pieces extend into the corresponding arc-shaped slots and are fixedly connected, an annular connecting seat is sleeved on the sealing pipe section, a plurality of sealing slots are provided on the circumference of the annular connecting seat, a plurality of insertion strips are fixedly connected to the circumference of the inner wall of the connecting sleeve, the insertion strips are inserted into the corresponding sealing slots, wherein a sealing gasket is provided between each adjacent two insertion strips, and the sealing gasket is in contact with the outer wall of the annular connecting seat.

[0009] In order to screw together multiple metal wires, the screw connection structure further includes a distribution disk, a rotating ring sleeve and a threaded rod. The distribution disk is fixedly connected to the side of the connecting sleeve close to the closed sleeve. The distribution disk is provided with multiple openings for the metal wire to pass through. The rotating ring sleeve is movably arranged in the connecting sleeve. The winding disk is rotatably connected in the rotating ring sleeve. The insulating tube section is fixedly connected to the winding disk. The winding disk is provided with multiple wire holes, and the wire holes correspond one-to-one to the openings. The metal wire passes through the openings and extends into the wire holes. The threaded rod is fixedly connected to the distribution disk. A through nut is provided in the middle of the wire drum, and the through nut is threadedly connected to the threaded rod.

[0010] In order to ensure the electrical connection between the metal core and the stranded wire drum, a receiving cavity is further provided on a side of the metal core close to the threaded rod, and the threaded rod can be moved into the receiving cavity.

[0011] In order to keep the connecting sleeve closed, further, a sealing cap is provided on one side of the connecting sleeve, and the insulating tube section passes through the sealing cap.

[0012] The working principle and beneficial effects of the present invention are: 1. In the present invention, when connecting metal conductors to power equipment, it is necessary to peel multiple metal conductors from the insulating barrel, which causes a gap between the stripped area of the insulating barrel and the metal conductors. However, by using a closed sleeve to seal one side of the insulating barrel and requiring the metal conductors to pass through a sealed pipe section during use, it is possible to effectively avoid excessive dispersion between the metal conductors and the stripped area of the insulating barrel, which causes a large gap between the metal conductors and the insulating barrel, and effectively solve the problem of moisture oxidation between the metal conductors and the insulating barrel.

[0013] 2. In the present invention, when it is necessary to peel off the insulating tube layer on the outside of the metal conductor to expose the metal wire portion of the metal conductor, the metal conductor and the insulating tube layer are kept sealed by making a sealing connection between the connecting sleeve and the sealing tube section, thereby preventing moisture in the external air environment from entering between the metal conductor and the insulating tube layer.

[0014] 3. In the present invention, when it is necessary to make an electrical connection between the metal wire and the electrical equipment, a twisted connection structure is used in advance to disperse the multiple metal wires of the metal conductor and then twist them again, which can effectively ensure the uniformity of the multiple metal wires in the current transmission process. Moreover, because the electrical connection between the electrical equipment and the metal conductor in the prior art is generally connected by a nut crimping method, during the use of the present invention, after the metal wire and the twisted wire drum are electrically connected, the electric energy transmitted by the metal wire can be transmitted to the metal core, and after the metal core and the insulating pipe section are bent, the metal core at the slot and the electrical equipment are tightly fitted and electrically connected, preventing moisture in the external ambient air from entering between the metal core and the insulating pipe section.

[0015] 4. Therefore, when the moisture-proof and safe cross-linked polyethylene insulated power cable is used for electrical connection with power equipment, it can effectively prevent moisture in the external environment from contacting the metal conductor, and avoid electrical safety problems such as short circuit caused by the metal conductor during the transmission of electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a schematic structural diagram of a partial cross-section of the present invention; Figure 3 This is a schematic diagram of the structure of the metal conductor, the insulating tube layer and the insulating cylinder layer in the present invention; Figure 4 It is a partial cross-sectional structural diagram of the cooperation among the sealing sleeve, the sealing pipe section and the connecting ring sleeve in the present invention; Figure 5 This is a schematic structural diagram of the sealing pipe section, the connecting ring sleeve and the annular connecting seat in the present invention; Figure 6 This is a schematic diagram of the structure of the connecting sleeve, metal core, insulating tube section and arc-shaped insert in the present invention; Figure 7 It is a partial cross-sectional structural diagram of the connection sleeve, the distribution plate, the rotating ring sleeve and the stranding plate in the present invention; Figure 8 It is a partial cross-sectional structural diagram of the cooperation among the metal core, the insulating tube section and the accommodating cavity in the present invention; Figure 9 This is a schematic diagram of the structure of the cable distribution disk, rotating ring sleeve, threaded rod and cable winding disk in the present invention.

[0018] In the figure: 1. Metal conductor; 2. Insulating tube layer; 3. Insulating cylinder layer; 4. Closing sleeve; 5. Sealing tube section; 6. Connecting sleeve; 7. Metal core; 8. Insulating tube section; 9. Slot; 10. Annular heat shrink layer; 11. Bucket-shaped tube section; 12. Connecting ring sleeve; 13. Arc-shaped insert piece; 14. Arc-shaped slot; 15. Annular connecting seat; 16. Sealing slot; 17. Insert strip; 18. Sealing gasket; 19. Distribution plate; 20. Opening; 21. Rotating ring sleeve; 22. Wire drum; 23. Wire hole; 24. Threaded rod; 25. Accommodating cavity; 26. Closing cap; 27. Sliding trough. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 9 As shown, this embodiment proposes a moisture-proof and safe cross-linked polyethylene insulated power cable, including multiple metal conductors 1, each of which is provided with an insulating tube layer 2 on the outside of the multiple metal conductors 1, and an insulating barrel layer 3 is provided between the outsides of the multiple insulating tube layers 2. The metal conductor 1 is a cable core produced by a stranded wire production process using multiple hard metal wires, and the cross-linked polyethylene insulated power cable is composed of multiple metal conductors 1, and the multiple metal conductors 1 are used as neutral wires or ground wires respectively. The outer side of the metal conductor 1 is processed by an extrusion process to produce a layer of insulating tube layer 2 for mutually insulating and shielding the multiple metal conductors 1, and then the multiple metal conductors 1 are twisted together into a cable, and then an insulating barrel layer 3 is extruded between the outer sides of the multiple metal conductors 1 extruded with the insulating tube layer 2, for insulating and protecting the multiple metal conductors 1.

[0021] The sealing sleeve 4 is also included. The sealing sleeve 4 is arranged on one side of the insulating tube layer 3. The sealing sleeve 4 is used to keep the insulating tube layer 3 and the multiple insulating tube layers 2 closed. An annular heat shrinkable layer 10 is provided inside the sealing sleeve 4. The annular heat shrinkable layer 10 is sealed and connected with the insulating tube layer 3 after being heated. When the metal conductor 1 is required to be electrically connected to the power equipment, the multiple metal conductors 1 need to be moved out from one side of the insulating tube layer 3. At this time, a gap will be generated between the insulating tube layer 3 and the multiple insulating tube layers 2. When the metal conductor 1 is subjected to the cable twisting operation, a gap will be formed between the insulating tube layer 2 and the insulating tube layer 3. When fillers are added, moisture in the external air penetrates between the insulating tube layer 3 and the insulating pipe layer 2, causing damage to the fillers and resulting in poor sealing between the insulating tube layer 2 and the insulating tube layer 3. During use, the present invention installs the closing sleeve 4 on one side of the insulating tube layer 3, so that multiple insulating pipe layers 2 pass through the closing sleeve 4, and then makes the annular heat shrinkable layer 10 contact with the outer wall of the insulating tube layer 3. After heating the annular heat shrinkable layer 10, the insulating tube layer 3 and the closing sleeve 4 are connected together, and the insulating tube layer 3 and the insulating pipe layer 2 are sealed by the closing sleeve 4.

[0022] There are multiple sealed pipe sections 5 connected to the closed sleeve 4, and the sealed pipe sections 5 correspond to the metal conductors 1 one by one. The metal conductor 1 is moved into the sealed pipe section 5, and the metal conductor 1 is moved out of the closed sleeve 4 through the sealed pipe section 5. The side of the sealed pipe section 5 connected to the closed sleeve 4 is set as a bucket-shaped pipe section 11, and a connecting ring sleeve 12 is fixed on the other side of the sealed pipe section 5. The metal conductor 1 and the insulating tube layer 2 are moved into the interior of the sealed pipe section 5 through the bucket-shaped pipe section 11 of the sealed pipe section 5, and then the metal conductor 1 and the insulating tube layer 2 are moved out from the other side through the sealed pipe section 5. Because the inner wall of the sealed pipe section 5 and the outer wall of the insulating tube layer 2 are similar in size, the bucket-shaped pipe section 11 is set to facilitate the insertion of the insulating tube layer 2 into the sealed pipe section 5.

[0023] The connecting sleeve 6 is sealed and arranged on one side of the sealing pipe section 5. The connecting sleeve 6 is fixedly connected to a plurality of arc-shaped insert pieces 13 on the circumference of the side close to the connecting ring sleeve 12. The connecting ring sleeve 12 is provided with a plurality of arc-shaped slots 14. The arc-shaped insert pieces 13 extend into the corresponding arc-shaped slots 14 and are fixedly connected. An annular connecting seat 15 is sleeved on the sealing pipe section 5. The annular connecting seat 15 is provided with a plurality of sealing slots 16 on the circumference. A plurality of insert strips 17 are fixedly connected to the inner wall of the connecting sleeve 6 on the circumference. The insert strips 17 are inserted into the corresponding sealing slots 16. A sealing gasket 18 is provided between each adjacent two insert strips 17. The sealing gasket 18 contacts the outer wall of the annular connecting seat 15, and the multiple arc-shaped insertion pieces 13 on one side of the connecting sleeve 6 are extended into the corresponding arc-shaped slots 14, and threaded holes are provided between the arc-shaped slots 14 and the arc-shaped insertion pieces 13, and fasteners such as bolts are used to fix the arc-shaped slots 14 and the arc-shaped insertion pieces 13. When the connecting sleeve 6 moves toward one side of the sealing pipe section 5, the insertion strip 17 will be inserted into the corresponding sealing slot 16, thereby increasing the contact area between the connecting sleeve 6 and the sealing pipe section 5, and using multiple sealing gaskets 18, the inner wall of the connecting sleeve 6 and the outer wall of the sealing pipe section 5 are kept fully sealed.

[0024] A screw connection structure for screwing a plurality of metal wires is provided in the connecting sleeve 6, and the screw connection structure includes a distribution plate 19, a rotating ring sleeve 21 and a threaded rod 24. The connecting sleeve 6 is fixedly connected to the distribution plate 19 on the side close to the closed sleeve 4. The distribution plate 19 is provided with a plurality of openings 20 for the metal wires to pass through. The rotating ring sleeve 21 is movably provided in the connecting sleeve 6. A plurality of sliding grooves 27 are provided on the circumference of the inner wall of the connecting sleeve 6. The rotating ring sleeve 21 is slidably connected to the sliding grooves 27 through a sliding block. When the winding drum 22 moves laterally, the rotating ring sleeve 21 will also be driven to move laterally between the plurality of sliding grooves 27. A winding drum 22 is rotatably connected in the rotating ring sleeve 21, and the insulating tube section 8 is fixedly connected to the winding drum 22. A plurality of winding holes 23 are opened on the winding drum 22, and the winding holes 23 correspond to the openings 20 one by one. The metal wire passes through the openings 20 and extends into the winding holes 23. A threaded rod 24 is fixedly connected to the distribution disk 19, and a through nut is provided in the middle of the winding drum 22. The through nut is threadedly connected to the threaded rod 24. In the process of connecting the connecting sleeve 6 and the sealing tube section 5, the insulating tube section 8 on one side of the metal conductor 1 is stripped to expose the metal conductor 1, and the metal conductor 1 is split into multiple metal wires. Each metal wire passes through the corresponding opening 20 on the distribution disk 19, and then the metal wire passes through the stranding hole 23 on the stranding disk 22 and is moved to the other side of the connecting sleeve 6. The operator can then rotate the stranding disk 22 in the rotating ring sleeve 21 by rotating the insulating tube section 8. During the movement of the stranding disk 22, multiple metal wires are twisted together again, and the metal wires are fully connected to the stranding disk 22. By twisting the metal wires again, the opening of the peeled insulating tube section 8 can be prevented from continuing to expand, the problem of multiple loose metal wires can be avoided, and the metal wires can be kept fixedly connected to the stranding disk 22.

[0025] An insulating tube section 8 is provided on one side of the screwed connection structure. The insulating tube section 8 passes through the closed sleeve 4. A metal core 7 is provided in the insulating tube section 8. The metal core 7 is electrically connected to the stranded wire drum 22. A slot 9 is provided on one side of the insulating tube section 8. The metal core 7 is exposed through the slot 9. Because the electrical connection between the power equipment and the cable in the prior art is all carried out by crimping, during the use of the present invention, the metal core 7 and the insulating tube section 8 are bent so that the part of the metal core 7 located at the slot 9 is in full contact with the connection area of the power equipment. Then, a crimping piece is used to make full contact between the metal core 7 and the power equipment, and the slot 9 area is completely covered within the range of the crimping piece, thereby improving the insulation of the metal core 7 during use and preventing moisture in the external environment from entering between the metal core 7 and the connecting tube section. A receiving cavity 25 is provided on one side of the metal core 7 close to the threaded rod 24, and the threaded rod 24 can be moved into the receiving cavity 25. Because the entire cross-linked polyethylene insulated power cable needs to be used to connect two power devices after being cut, the length of the metal conductor 1 that needs to be stripped off the cross-linked polyethylene insulated power cable is not fixed. When the reserved length of the cross-linked polyethylene insulated power cable is short, the exposed distance of the metal conductor 1 is short. At this time, the less exposed metal wire can also ensure a stable electrical connection between the metal wire and the stranding drum 22 under the twisting action with the stranding drum 22. When the stranding drum 22 is close to the side of the distribution drum 19, the threaded rod 24 extends into the receiving cavity 25 of the metal core 7 to ensure the electrical connection between the metal core 7 and the stranding drum 22. A sealing cap 26 is provided on one side of the connecting sleeve 6, and the insulating tube section 8 passes through the sealing cap 26. After adjusting the positions of the multiple wire drums 22, the sealing cap 26 is installed on one side of the connecting sleeve 6 to keep the interior of the connecting sleeve 6 closed. The sealing cap 26 can be installed by other methods such as hot melting or gluing.

[0026] The working principle of this moisture-proof and safe cross-linked polyethylene insulated power cable: The closed sleeve 4 is installed on one side of the insulating tube layer 3, and the multiple insulating tube layers 2 are passed through the closed sleeve 4. Then, the annular heat shrinkable layer 10 is brought into contact with the outer wall of the insulating tube layer 3. After the annular heat shrinkable layer 10 is heated, the insulating tube layer 3 and the closed sleeve 4 are connected together. The metal conductor 1 and the insulating tube layer 2 are removed from the other side through the sealing pipe section 5, and the insulating tube layer 2 on this side is peeled off to expose the metal conductor 1. Insert the multiple arc-shaped insert pieces 13 on one side of the connecting sleeve 6 into the corresponding arc-shaped slots 14, and then use fasteners such as bolts to fix the arc-shaped slots 14 and the arc-shaped insert pieces 13. When the connecting sleeve 6 moves toward the side of the sealing pipe section 5, the insert strips 17 will be inserted into the corresponding sealing slots 16. The metal conductor 1 is split into multiple metal wires. Each metal wire is passed through the corresponding opening 20 on the distribution plate 19. The metal wire is then passed through the stranding hole 23 on the stranding plate 22 and moved to the other side of the connecting sleeve 6. The operator can then rotate the stranding plate 22 in the rotating ring 21 by rotating the insulating tube section 8. During the movement of the stranding plate 22, the multiple metal wires are twisted together again. Then, a sealing cap 26 is installed on one side of the connecting sleeve 6. Then bend the metal core 7 and the insulating tube section 8 so that the portion of the metal core 7 located at the slot 9 is in full contact with the connection area of the electrical equipment, and then use a pressing piece to make full contact between the metal core 7 and the electrical equipment to achieve electrical connection between the metal core 7 and the electrical equipment.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A moisture-proof and safe cross-linked polyethylene insulated power cable, comprising a plurality of metal conductors (1), each of which is provided with an insulating tube layer (2) on the outside of each of the plurality of metal conductors (1), and an insulating barrel layer (3) is provided between the outsides of the plurality of insulating tube layers (2), characterized in that: Also includes: A closed sleeve (4), the closed sleeve (4) being arranged on one side of the insulating tube layer (3), the closed sleeve (4) being used to keep the insulating tube layer (3) and the plurality of insulating tube layers (2) sealed, the closed sleeve (4) being connected to a plurality of sealed tube sections (5), the sealed tube sections (5) corresponding to the metal conductors (1) one by one, the metal conductors (1) being moved into the sealed tube sections (5), and the metal conductors (1) being moved out of the closed sleeve (4) through the sealed tube sections (5); A connecting sleeve (6), the connecting sleeve (6) being sealingly arranged on one side of the sealing pipe section (5), and a screw connection structure for screwing a plurality of metal wires being arranged inside the connecting sleeve (6); A metal core (7), an insulating tube section (8) is provided on one side of the screwed connection structure, the insulating tube section (8) passes through the closed sleeve (4), a metal core (7) is provided in the insulating tube section (8), a slot (9) is provided on one side of the insulating tube section (8), and the metal core (7) is exposed through the slot (9).

2. A moisture-proof and safe cross-linked polyethylene insulated power cable according to claim 1, characterized in that: An annular heat shrinkable layer (10) is provided inside the closed sleeve (4), and the annular heat shrinkable layer (10) is sealed and connected to the insulating cylindrical layer (3) after being heated.

3. A moisture-proof and safe cross-linked polyethylene insulated power cable according to claim 2, characterized in that: The side of the sealing pipe section (5) communicating with the closed sleeve (4) is provided as a bucket-shaped pipe section (11), and the other side of the sealing pipe section (5) is fixedly provided with a connecting ring sleeve (12).

4. A moisture-proof and safe cross-linked polyethylene insulated power cable according to claim 3, characterized in that: A plurality of arc-shaped inserting pieces (13) are fixedly connected to the circumference of one side of the connecting sleeve (6) close to the connecting ring sleeve (12); a plurality of arc-shaped slots (14) are provided on the connecting ring sleeve (12); the arc-shaped inserting pieces (13) extend into the corresponding arc-shaped slots (14) and are fixedly connected; The sealing pipe section (5) is sleeved with an annular connecting seat (15), and a plurality of sealing slots (16) are provided on the circumference of the annular connecting seat (15). A plurality of insertion strips (17) are fixedly connected to the circumference of the inner wall of the connecting sleeve (6), and the insertion strips (17) are inserted into the corresponding sealing slots (16); A sealing gasket (18) is provided between each two adjacent insertion strips (17), and the sealing gasket (18) contacts the outer wall of the annular connecting seat (15).

5. The moisture-proof and safe cross-linked polyethylene insulated power cable according to claim 1, characterized in that: The screw connection structure comprises: A wire distribution plate (19), the wire distribution plate (19) being fixedly connected to a side of the connecting sleeve (6) close to the closing sleeve (4), and the wire distribution plate (19) being provided with a plurality of openings (20) for metal wires to pass through; A rotating ring sleeve (21), wherein the rotating ring sleeve (21) is movably arranged in the connecting sleeve (6), a wire drum (22) is rotatably connected in the rotating ring sleeve (21), the metal core (7) is electrically connected to the wire drum (22), the insulating tube section (8) is fixedly connected to the wire drum (22), a plurality of wire holes (23) are opened on the wire drum (22), the wire holes (23) correspond to the openings (20) one by one, and the metal wire passes through the openings (20) and then extends into the wire holes (23); A threaded rod (24) is fixedly connected to the distribution disc (19), and a through nut is provided in the middle of the stranded wire disc (22), and the through nut is threadedly connected to the threaded rod (24).

6. A moisture-proof and safe cross-linked polyethylene insulated power cable according to claim 5, characterized in that: A receiving cavity (25) is provided on one side of the metal core (7) close to the threaded rod (24), and the threaded rod (24) can be moved into the receiving cavity (25).

7. A moisture-proof and safe cross-linked polyethylene insulated power cable according to claim 6, characterized in that: A sealing cap (26) is provided on one side of the connecting sleeve (6), and the insulating tube section (8) passes through the sealing cap (26).

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