Moisture-proof reinforced crosslinked polyethylene insulated cable

Abstract

The utility model belongs to the technical field of cables, and particularly discloses a moisture-proof reinforced crosslinked polyethylene insulated cable, which comprises a wear-resistant outer layer and a reinforced inner pipe, the reinforced inner pipe is positioned inside the wear-resistant outer layer, and a moisture-proof assembly is arranged between the wear-resistant outer layer and the reinforced inner pipe; the moisture-proof assembly comprises a moisture-proof layer, the moisture-proof layer is located on the inner side of the wear-resistant outer layer, a water blocking layer is arranged in the moisture-proof layer, a water absorbing layer is arranged on the inner side of the water blocking layer, and a water resisting layer is arranged on the inner side of the water absorbing layer. Particularly, when a wear-resistant outer layer of the cable is damaged, firstly, water is blocked by a water blocking layer preliminarily, if the water is not blocked, the water is adsorbed by a water absorption layer, and water absorption resin expands and becomes large, so that cracks are blocked, water flow is prevented from continuously permeating, other parts of the cable are protected from being damaged by the water, and the service life of the cable is prolonged. And the overall moisture-proof performance of the cable is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cables, and more specifically to a moisture-proof and reinforced cross-linked polyethylene insulated cable. Background Art

[0002] Cross-linked polyethylene insulated cable is a cable suitable for distribution networks and other fields, and has advantages that PVC insulated cables cannot match. It has a simple structure, light weight, good heat resistance, strong load capacity, no melting, chemical corrosion resistance, and mechanical strength. With the development of the economy and the advancement of science and technology, human needs for communication and electricity are increasing, and cables need to be laid in many places. The power cable in the cable is a cable used to transmit and distribute electrical energy. It is commonly used in urban underground power grids, industrial and mining power transmission lines, and power station lead-out lines.

[0003] A cross-linked polyethylene insulated power cable with announcement number CN219958623U. After a long period of work, the heat generated by the conductor core itself can be conducted to the thermal conductive coating through the thermal conductive silicone filling layer. The heat on the thermal conductive coating can be dispersed to the hollow cavity and the star-shaped groove through the connecting groove, dissipating the heat on the conductor core, effectively realizing the heat conduction of the conductor core, and avoiding overheating of the conductor core and affecting the working performance of the conductor core.

[0004] However, this patent only has one waterproof layer on the outside. During use, the waterproof layer is used to prevent water from entering the cable. When the waterproof layer is damaged, liquid can easily enter the cable, causing a short circuit inside the cable. The overall moisture-proof and waterproof effects of the power distribution cable are poor, which may cause fire or other safety problems. Utility Model Content

[0005] In order to solve the above problems, the present application provides a moisture-proof reinforced cross-linked polyethylene insulated cable.

[0006] The present application provides a moisture-proof reinforced cross-linked polyethylene insulated cable adopts the following technical solution:

[0007] A moisture-proof reinforced cross-linked polyethylene insulated cable comprises a wear-resistant outer layer and a reinforced inner tube, wherein the reinforced inner tube is located inside the wear-resistant outer layer, and a moisture-proof component is arranged between the wear-resistant outer layer and the reinforced inner tube;

[0008] The moisture-proof component includes a moisture-proof layer, which is located on the inner side of the wear-resistant outer layer. A water-blocking layer is arranged inside the moisture-proof layer, a water-absorbing layer is arranged inside the water-blocking layer, and a water-isolating layer is arranged inside the water-absorbing layer. The water-blocking layer, the water-absorbing layer and the water-isolating layer prevent water from entering the cable.

[0009] Through the above technical solution, the moisture-proof component helps to protect other parts of the cable from being damaged by moisture, thereby improving the overall moisture-proof performance of the cable.

[0010] Furthermore, a plurality of wear-resistant rubber blocks are arranged outside the wear-resistant outer layer, and the plurality of wear-resistant rubber blocks are arranged in a ring array along the axis of the wear-resistant outer layer.

[0011] Through the above technical solution, the wear-resistant outer layer and the wear-resistant rubber block reduce the wear and scratches of the cable casing by external objects, thereby reducing the risk of breakage and further preventing moisture from entering.

[0012] Furthermore, a reinforcement layer is provided on the inner side of the moisture-proof layer, and a plurality of reinforcement blocks are provided inside the reinforcement layer, and the cross section of each reinforcement block is triangular.

[0013] Through the above technical solution, the reinforcement layer can enhance the overall strength of the cable. The reinforcement block is a triangular structure, which usually has higher strength and rigidity, and can effectively prevent the reinforcement block from deforming or buckling when subjected to external forces.

[0014] Furthermore, a buffer layer is provided on the inner side of the reinforcement layer, and a fireproof layer is provided on the inner side of the buffer layer.

[0015] Through the above technical solution, the buffer layer can absorb part of the energy, reduce the impact of external force on the internal structure of the cable, and reduce the possibility of cable damage. The fireproof layer prevents the fire from spreading to other parts of the cable and protects the insulation layer and wire group inside the cable.

[0016] Furthermore, an insulating layer is provided on the inner side of the fireproof layer.

[0017] Through the above technical solution, the insulating layer can effectively prevent short circuit or leakage between the internal wire groups of the cable or between the wire groups and the external environment.

[0018] Furthermore, a plurality of wire groups are disposed outside the reinforced inner tube, and the plurality of wire groups are located inside the insulating layer.

[0019] Furthermore, a filling layer is provided inside the reinforced inner tube, and a supporting layer is provided inside the filling layer.

[0020] Through the above technical solution, the filling layer can increase the structural strength and rigidity of the reinforced inner tube, and the supporting layer can effectively support the internal structure of the reinforced inner tube.

[0021] Furthermore, the wear-resistant outer layer is made of fluorocarbon polymer material.

[0022] Furthermore, the water-absorbing layer is made of water-absorbing resin material.

[0023] Furthermore, the filling layer is made of carbon fiber material.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] (1) The utility model can prevent water from entering the cable when the outer wall of the cable is damaged by setting a moisture-proof component. Specifically, when the wear-resistant outer layer of the cable is damaged, the water-blocking layer will initially block the water. If the water is not blocked, the water will be absorbed by the water-absorbing layer. Because the water-absorbing layer is made of water-absorbing resin, the water-absorbing resin will expand and become larger after absorbing water, thereby blocking the cracks and preventing water from continuing to penetrate. The waterproof layer will separate the water-absorbing layer from other internal structures of the cable, which helps to protect other parts of the cable from being damaged by moisture and improve the overall moisture-proof performance of the cable.

[0026] (2) The wear-resistant outer layer of the utility model is made of fluorocarbon polymer material, which has an extremely low friction coefficient and excellent wear resistance, reducing the wear and scratching of the cable casing by external objects, thereby reducing the risk of damage and further preventing moisture from entering, while the wear-resistant rubber block can enhance the wear resistance of the cable casing;

[0027] (3) The reinforcement layer of the utility model can enhance the overall strength of the cable. The reinforcement block is a triangular structure, which usually has higher strength and rigidity and can effectively prevent the reinforcement block from deforming or buckling when subjected to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 It is a plan view of the utility model;

[0030] Figure 3 This is a schematic diagram of the internal structure of the moisture-proof layer of the utility model;

[0031] Figure 4 It is a schematic diagram of the internal structure of the reinforced inner tube of the utility model.

[0032] Explanation of the accompanying drawings: 1. Wear-resistant outer layer; 2. Wear-resistant rubber block; 3. Reinforced inner tube; 4. Wire group; 5. Moisture-proof layer; 6. Reinforcement block; 7. Reinforcement layer; 8. Buffer layer; 9. Fireproof layer; 10. Insulation layer; 11. Water-blocking layer; 12. Water-absorbing layer; 13. Water-isolating layer; 14. Filling layer; 15. Support layer. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0034] Reference Figure 1-Figure 4 , a moisture-proof reinforced cross-linked polyethylene insulated cable, comprising a wear-resistant outer layer 1 and a reinforced inner tube 3, wherein the reinforced inner tube 3 is located inside the wear-resistant outer layer 1, and a moisture-proof component is provided between the wear-resistant outer layer 1 and the reinforced inner tube 3;

[0035] The moisture-proof component includes a moisture-proof layer 5, which is located on the inner side of the wear-resistant outer layer 1. A water-blocking layer 11 is provided inside the moisture-proof layer 5, a water-absorbing layer 12 is provided on the inner side of the water-blocking layer 11, and a water-isolating layer 13 is provided on the inner side of the water-absorbing layer 12. The water-blocking layer 11, the water-absorbing layer 12 and the water-isolating layer 13 prevent water from entering the interior of the cable, and the water-absorbing layer 12 is made of a water-absorbing resin material.

[0036] By setting up the moisture-proof component, it is possible to prevent water from entering the cable when the outer wall of the cable is damaged. Specifically, when the wear-resistant outer layer 1 of the cable is damaged, the water-blocking layer 11 will first block the water. If the water is not blocked, the water will be adsorbed by the water-absorbing layer 12. Because the water-absorbing layer 12 is made of water-absorbing resin, the water-absorbing resin will swell and grow after absorbing water, thereby blocking the cracks and preventing water from continuing to penetrate. The waterproof layer 13 will separate the water-absorbing layer 12 from other internal structures of the cable, which will help protect other parts of the cable from being damaged by moisture and improve the overall moisture-proof performance of the cable.

[0037] Reference Figure 1-Figure 2 A plurality of wear-resistant rubber blocks 2 are arranged outside the wear-resistant outer layer 1. The plurality of wear-resistant rubber blocks 2 are arranged in a ring array along the axis of the wear-resistant outer layer 1. The wear-resistant outer layer 1 is made of fluorocarbon polymer material.

[0038] Fluorocarbon polymer material is a material with extremely low friction coefficient and excellent wear resistance, which reduces the wear and scratches of external objects on the cable jacket, thereby reducing the risk of damage and further preventing moisture from entering, while the wear-resistant rubber block 2 can enhance the wear resistance of the cable jacket.

[0039] Reference Figure 2 A reinforcing layer 7 is provided on the inner side of the moisture-proof layer 5, and a plurality of reinforcing blocks 6 are provided inside the reinforcing layer 7, and the cross section of each reinforcing block 6 is triangular.

[0040] The reinforcement layer 7 can enhance the overall strength of the cable. The reinforcement block 6 is a triangular structure, which usually has higher strength and rigidity and can effectively prevent the reinforcement block 6 from deforming or buckling when subjected to external forces.

[0041] Reference Figure 2 A buffer layer 8 is provided on the inner side of the reinforcement layer 7 , a fireproof layer 9 is provided on the inner side of the buffer layer 8 , and an insulating layer 10 is provided on the inner side of the fireproof layer 9 .

[0042] The buffer layer 8 is made of foam plastic. When the cable is subjected to external impact or vibration, the buffer layer 8 can absorb part of the energy, reduce the impact of the external force on the internal structure of the cable, and reduce the possibility of damage to the cable.

[0043] The fireproof layer 9 is made of a flame-retardant polymer material, which can slow down the spread of flames, prevent the fire from spreading to other parts of the cable, and protect the insulation layer 10 and the wire group 4 inside the cable.

[0044] The insulating layer 10 can effectively prevent short circuit or leakage between the wire groups 4 inside the cable or between the wire groups 4 and the external environment.

[0045] Reference Figure 1-Figure 4 A plurality of wire groups 4 are arranged outside the reinforced inner tube 3, and the plurality of wire groups 4 are located inside the insulating layer 10. A filling layer 14 is arranged inside the reinforced inner tube 3, and a supporting layer 15 is arranged inside the filling layer 14, and the filling layer 14 is made of carbon fiber material.

[0046] The filling layer 14 can increase the structural strength and rigidity of the reinforced inner tube 3, enabling it to withstand greater external pressure and load. The supporting layer 15 usually has a certain thickness and rigidity, which can effectively support the internal structure of the reinforced inner tube 3 and prevent it from being deformed or damaged when subjected to external forces.

[0047] Working principle: When the wear-resistant outer layer 1 of the cable is damaged, the water-blocking layer 11 will initially block the water. If the water is not blocked, it will be absorbed by the water-absorbing layer 12. Because the water-absorbing layer 12 is made of water-absorbing resin, the water-absorbing resin will swell and become larger after absorbing water, thereby blocking the cracks and preventing water from continuing to penetrate. The waterproof layer 13 will separate the water-absorbing layer 12 from other internal structures of the cable, which helps to protect other parts of the cable from moisture damage and improve the overall moisture-proof performance of the cable.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A moisture-proof reinforced cross-linked polyethylene insulated cable, characterized in that: include: A wear-resistant outer layer (1) and a reinforced inner tube (3), wherein the reinforced inner tube (3) is located inside the wear-resistant outer layer (1), and a moisture-proof component is provided between the wear-resistant outer layer (1) and the reinforced inner tube (3); The moisture-proof component comprises a moisture-proof layer (5), wherein the moisture-proof layer (5) is located on the inner side of a wear-resistant outer layer (1), a water-blocking layer (11) is provided inside the moisture-proof layer (5), a water-absorbing layer (12) is provided inside the water-blocking layer (11), a water-isolating layer (13) is provided inside the water-absorbing layer (12), and the water-blocking layer (11), the water-absorbing layer (12) and the water-isolating layer (13) prevent water from entering the interior of the cable.

2. A moisture-proof reinforced cross-linked polyethylene insulated cable according to claim 1, characterized in that: A plurality of wear-resistant rubber blocks (2) are arranged outside the wear-resistant outer layer (1), and the plurality of wear-resistant rubber blocks (2) are arranged in a ring array along the axis of the wear-resistant outer layer (1).

3. A moisture-proof reinforced cross-linked polyethylene insulated cable according to claim 1, characterized in that: A reinforcing layer (7) is provided on the inner side of the moisture-proof layer (5), and a plurality of reinforcing blocks (6) are provided inside the reinforcing layer (7), and the cross section of each reinforcing block (6) is triangular.

4. A moisture-proof reinforced cross-linked polyethylene insulated cable according to claim 3, characterized in that: A buffer layer (8) is provided on the inner side of the reinforcement layer (7), and a fireproof layer (9) is provided on the inner side of the buffer layer (8).

5. A moisture-proof reinforced cross-linked polyethylene insulated cable according to claim 4, characterized in that: An insulating layer (10) is provided on the inner side of the fireproof layer (9).

6. A moisture-proof reinforced cross-linked polyethylene insulated cable according to claim 5, characterized in that: A plurality of wire groups (4) are arranged outside the reinforced inner tube (3), and the plurality of wire groups (4) are located inside the insulating layer (10).

7. The moisture-proof reinforced cross-linked polyethylene insulated cable according to claim 1, characterized in that: A filling layer (14) is provided inside the reinforced inner tube (3), and a supporting layer (15) is provided on the inner side of the filling layer (14).

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