A moisture-proof and safe cross-linked polyethylene insulated power cable and its application method

Abstract

This invention relates to the field of cables and discloses a moisture-proof, safe cross-linked polyethylene insulated power cable and its usage method. The cable includes a plurality of copper wires internally, with an insulation layer on the outer arc surface of each copper wire. A filler paste is applied to corresponding locations on the insulation layer. This invention provides a dual physical and chemical seal, completely blocking moisture penetration. When the outer sheath is damaged and water enters, the solidified layer reacts with water, forming the first physical barrier. Simultaneously, the expansion layer expands upon contact with water, pushing the top block to bend and close the spacers, forming partitions and tightly sealing the solidified layer. This effectively prevents moisture from spreading longitudinally within the cable, achieving a "self-healing" seal. Rapid response and directional flow guidance enhance moisture-proof sensitivity. The water-guiding strip actively absorbs and guides the infiltrated liquid, quickly transferring moisture from the outer to the inner spacers, triggering the expansion layer reaction.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to a moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method. Background Technology

[0002] In patent application CN116469610B, the invention includes an inner support member and several battery cells disposed inside the inner support member; a detection and transmission mechanism disposed inside the inner support member, and the detection and transmission mechanism is arranged in several groups, with the groups of detection and transmission mechanisms evenly distributed inside the inner support member; and a support mechanism disposed on the side wall of the inner support member, located between the side wall of the inner support member and the interior of the external protective mechanism. The advantage is that the invention incorporates a detection and transmission mechanism so that when the power cable is corroded and damaged by water, the two ends of the conductive component inside the movable plate will contact the connection end of one end of the power supply and the connection end of one end of the signal generator, connecting the power supply and the signal generator through the conductive component. This allows the signal generator to operate and emit a signal, thereby alerting maintenance personnel to the severe corrosion and water ingress in that section of the power cable.

[0003] In the aforementioned patents or prior art, when encountering water leakage and triggering self-repair, the leak-stopping operation is often only achieved through a single solidification process, resulting in relatively poor waterproofing performance. Summary of the Invention

[0004] The problem this invention aims to solve is that self-curing waterproof cables generally have relatively poor waterproofing performance and relatively limited functionality.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a moisture-proof and safe cross-linked polyethylene insulated power cable and a method of using it, comprising a cable, wherein a plurality of copper wires are disposed inside the cable, an insulating layer is disposed on the outer arc surface of the copper wires, and a filler paste is disposed at the corresponding positions of the insulating layer.

[0006] Preferably, the copper wire is provided with an outer sheath, and the outer sheath is provided with a plurality of inner partitions arranged in a ring array inside.

[0007] Preferably, each of the inner partitions has an expansion layer inside, and each of the inner partitions has an outer partition at a corresponding location on the outside.

[0008] Preferably, the bottom of the inner wall of the outer partition layer is provided with a plurality of top blocks in an array.

[0009] Preferably, the top of the inner wall of the outer partition layer is provided with a plurality of spacers arranged in an array, and the spacers are adapted to the top block.

[0010] Preferably, a solidified layer is provided at the corresponding positions of the spacers.

[0011] Preferably, a water guide strip is provided on one side of the inner wall of the outer partition, and one end of the water guide strip penetrates one side of the inner partition and extends into the interior.

[0012] S1: When the outer protective layer is damaged, liquid will seep into the interior of the outer partition layer from the outside. During this process, the liquid will cause the solidification reaction of the solidification layer set between several spacers in the outer partition layer. S2: At the same time as the solidification reaction occurs, the liquid will come into contact with the water guide strip and spread along the water guide strip to the inner partition under the water guide strip, and cause the expansion layer at the corresponding position of the inner partition to expand when it comes into contact with water. S3: Under the action of the expansion reaction, the inner partition layer deforms, causing the corresponding top block to move upward and push the corresponding spacer to bend until the top of the spacer bends to contact the adjacent spacer to form a space closure, which completely compacts the solidified layer inside to form a physical protective layer.

[0013] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) Through a dual physical and chemical blockade, moisture penetration is completely blocked. When the outer sheath is damaged and water enters, the solidification layer will react with water to form the first physical barrier. At the same time, the expansion layer expands when it comes into contact with water, pushing the top block to make the spacer bend and close, forming a partition, and tightly sealing the solidified layer. This combination of "solidification + expansion blocking" can effectively prevent moisture from spreading longitudinally inside the cable, achieving a "self-repairing" seal. Rapid response and directional flow enhance moisture-proof sensitivity. The water guide strip acts as a rapid response "sensor", which can actively absorb and guide the infiltrated liquid, quickly conducting water vapor from the outer spacer to the inner spacer, triggering the expansion layer reaction. This ensures that once moisture enters, it can be "detected" immediately and the blocking mechanism can be triggered, avoiding moisture diffusion due to slow response. (2) The zoned isolation design enables precise isolation of fault points. By setting multiple inner partitions in a ring array, the cable is divided into independent moisture-proof zones. When water enters a damaged area, only the expansion layer and partitions in that area will react and form a closed space, "locking" the fault point in a localized area. This avoids damage to the entire internal structure of the cable and greatly simplifies subsequent maintenance and repair work. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the overall structure of the present invention; Figure 5 This is a schematic diagram of the overall structure of the present invention; Figure 6 This is a schematic diagram of the overall structure of the present invention; Figure 7 This is a side view of the overall structure of the present invention; Figure 8 For the present invention Figure 1 A magnified view of part A shown below; Figure 9 For the present invention Figure 2 A magnified view of part B shown; Figure 10 For the present invention Figure 4 A magnified view of a portion at point C is shown.

[0015] In the diagram: 1. Cable; 2. Insulation layer; 3. Copper wire; 4. Filler paste; 5. Expansion layer; 6. Outer sheath; 7. Water guide strip; 8. Top block; 9. Spacer strip; 10. Outer spacer layer; 11. Inner spacer layer; 12. Solidified layer. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0017] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0018] like Figures 1 to 10 As shown, the present invention provides a moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method, including a cable 1, a plurality of copper wires 3 are arranged inside the cable 1, an insulation layer 2 is arranged on the outer arc surface of the copper wires 3, and a filler paste 4 is arranged at the corresponding position of the insulation layer 2.

[0019] The copper wire 3 is provided with an outer sheath 6, and the outer sheath 6 is provided with several inner partitions 11 arranged in a ring array inside.

[0020] An expansion layer 5 is provided inside each of the inner partitions 11, and an outer partition 10 is provided at the corresponding position on the outside of each of the inner partitions 11.

[0021] The bottom of the inner wall of the outer partition 10 is provided with several top blocks 8 arranged in an array.

[0022] The top of the inner wall of the outer partition 10 is provided with several spacers 9 in an array, and the spacers 9 are adapted to the top block 8.

[0023] A solidification layer 12 is provided at the corresponding position of the spacer 9.

[0024] A water guide strip 7 is provided on one side of the inner wall of the outer partition 10, and one end of the water guide strip 7 passes through one side of the inner partition 11 and extends into the interior.

[0025] S1: When the outer protective layer 6 is damaged, the liquid will seep into the interior of the outer partition layer 10 from the outside. During this process, the liquid will cause the solidification layer 12, which is set between several spacers 9 in the outer partition layer 10, to undergo a solidification reaction. S2: At the same time as the solidification reaction occurs, the liquid will come into contact with the water guide strip 7 and spread along the water guide strip 7 to the inner partition layer 11 under the water guiding action of the water guide strip 7, and cause the expansion layer 5 at the corresponding position of the inner partition layer 11 to expand when it comes into contact with water. S3: Under the action of the expansion reaction, the inner partition 11 deforms, causing the corresponding top block 8 to move upward and push the corresponding partition 9 to bend until the top of the partition 9 bends to contact the adjacent partition 9 to form a spatial closure, which completely compacts the solidified layer 12 inside to form a physical protective layer.

[0026] The working principle and usage process of this invention: When the cable is placed in a watery or humid environment, the cable has high requirements for dryness. Therefore, when the outermost layer of the cable is damaged, water vapor can easily penetrate into the cable. When penetration begins, the solidified layer 12 inside the outer partition 10, which is the first to come into contact with water, reacts with the water first. At the same time, the water-guiding strip 7 attracts water vapor to extend to the corresponding inner partition 11. The water vapor reacts with the expansion layer 5 inside the inner partition 11 and pushes the top block 8 to move outward. This causes the top block 8 to push the partition strip 9 to bend and deform until a space is closed. Combined with the solidified layer 12 that has already solidified at the closed point, a physical protective layer of partition is formed to prevent water vapor from spreading further and to fully compact the solidified layer 12 to ensure the waterproof effect.

[0027] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method, comprising a cable (1), characterized in that: The cable (1) has several copper wires (3) inside, and the outer arc surface of the copper wires (3) is provided with an insulation layer (2). The insulation layer (2) is provided with a filler paste (4) at the corresponding position of the insulation layer (2).

2. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 1, characterized in that: The copper wire (3) is provided with an outer sheath (6), and the outer sheath (6) is provided with a number of inner partitions (11) arranged in a ring array inside.

3. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 2, characterized in that: An expansion layer (5) is provided inside each of the inner partitions (11), and an outer partition (10) is provided at the corresponding position on the outside of each of the inner partitions (11).

4. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 3, characterized in that: The bottom of the inner wall of the outer partition (10) is provided with several top blocks (8) arranged in an array.

5. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 3, characterized in that: The top of the inner wall of the outer partition layer (10) is provided with several partition strips (9) arranged in an array, and the partition strips (9) are adapted to the top block (8).

6. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 5, characterized in that: A solidified layer (12) is provided at the corresponding position of the spacer (9).

7. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 3, characterized in that: A water guide strip (7) is provided on one side of the inner wall of the outer partition (10), and one end of the water guide strip (7) penetrates one side of the inner partition (11) and extends into the interior.

8. The moisture-proof and safe cross-linked polyethylene insulated power cable and its usage method according to claim 1, characterized in that: The operational procedures are as follows: S1: When the outer protective layer (6) is damaged, the liquid will penetrate into the interior of the outer partition layer (10) from the outside. During this process, the liquid will cause the solidification layer (12) set between several spacers (9) in the outer partition layer (10) to undergo a solidification reaction. S2: At the same time as the solidification reaction occurs, the liquid will come into contact with the water guide strip (7) and spread along the water guide strip (7) to the inner partition layer (11) under the water guiding action of the water guide strip (7), and trigger the expansion layer (5) at the corresponding position of the inner partition layer (11) to expand when it comes into contact with water. S3: Under the action of the expansion reaction, the inner partition (11) deforms, causing the corresponding top block (8) to move upward and push the corresponding partition (9) to bend until the top of the partition (9) bends to contact the adjacent partition (9) to form a space closure, which completely compacts the solidified layer (12) inside to form a physical protective layer.

Images