Copper core overhead insulated cable
By adopting a multi-layer protective structure in overhead cables, including armored steel wire layer and compressive layer, the problem of insufficient external protection in the prior art is solved, the wear resistance and service life of the cable is significantly improved, and the insulation filling layer is filled The metal shielding layer enhances the high-temperature protection effect of the wire core.
Patent Information
- Application Number
- CN202420826024.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-21
AI Technical Summary
The external protective sleeves of existing overhead cables are not wear-resistant, corrosion-resistant and compressively resistant, resulting in short service life and easy damage and deformation.
采用铠装钢丝层、抗压层、耐腐层、防水层、外阻燃层、金属屏蔽层和聚合物层的组合结构，增强电缆的外部保护能力，并通过绝缘填充层和内外金属屏蔽层提高线芯的耐高温和防护效果。
It significantly improves the wear, corrosion and pressure resistance of overhead cables, extends the service life, and enhances the high-temperature protection effect of the wire core.
Smart Images
Figure CN222213766U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of overhead cables, in particular to a copper core overhead insulated cable. Background Art
[0002] Overhead cable (full name: overhead insulated cable) is an overhead conductor equipped with an insulating layer and a protective sheath. It is a special cable manufactured using a production process similar to that of cross-linked cables. It is a new way of power transmission between overhead conductors and underground cables. It has the main characteristics of high power supply reliability, good power supply safety, convenient installation and maintenance, and reasonable economy. Its main technical parameters include weather resistance, insulation level, inner and outer semi-conductive shielding layers. Overhead cables are widely used in power transmission at home and abroad. Existing overhead cables only have a simple outer protective sheath on the outside, which has poor wear resistance, corrosion resistance, and pressure resistance. After long-term use, the outside will be easily damaged, and the core cannot be better protected. At the same time, when subjected to large pressure and impact, the inside of the cable will also be easily deformed, thereby reducing the service life of the overhead cable. Utility Model Content
[0003] 1. Technical issues to be solved
[0004] In view of the deficiencies in the prior art, the utility model provides a copper core overhead insulated cable, which has the advantages of improving the wear resistance, corrosion resistance and pressure resistance of the outer surface of the overhead cable, increasing the service life of the overhead cable, and solving the problems raised in the above-mentioned background technology.
[0005] (II) Technical solution
[0006] To achieve the above object, the following technical solution is provided: a copper core overhead insulated cable, comprising an armored steel wire layer, the inner ring of the armored steel wire layer is provided with a protective layer, the inner ring of the protective layer is provided with a pressure-resistant layer, the inner ring of the protective layer is provided with an outer metal shielding layer, and the inner ring of the outer metal shielding layer is provided with an insulating filling layer;
[0007] The protective layer includes a corrosion-resistant layer, a waterproof layer, and an outer flame-retardant layer. The inner ring of the corrosion-resistant layer is provided with a waterproof layer, the inner ring of the waterproof layer is provided with an outer flame-retardant layer, and the outer side of the corrosion-resistant layer is connected to the inner side of the armored steel wire layer;
[0008] The compression-resistant layer comprises a first high modulus high strength polymer layer, a flexible steel belt, and a second high modulus high strength polymer layer. The first high modulus high strength polymer layer is ringed inside with a flexible steel belt, and the flexible steel belt is ringed inside with a second high modulus high strength polymer layer.
[0009] Preferably, the inner side of the outer flame retardant layer is connected to the outer side of the first high modulus and high strength polymer layer, and the inner side of the second high modulus and high strength polymer layer is connected to the outer side of the outer metal shielding layer.
[0010] Preferably, a plurality of wire cores are arranged inside the insulating filling layer, a wrapping piece is arranged on the outer side of the plurality of wire cores, an inner metal shielding layer is arranged on the outer side of the wrapping piece, and an inner flame retardant layer is arranged on the outer side of the inner metal shielding layer.
[0011] Preferably, a plurality of tensile ropes are arranged inside the insulating filling layer, and the plurality of tensile ropes are distributed in a row with the insulating filling layer as the center.
[0012] Preferably, the corrosion-resistant layer material is polytetrafluoroethylene, and the waterproof layer material is TPU special protective material.
[0013] Preferably, the outer flame retardant layer is a cross-linked polyethylene flame retardant material.
[0014] Preferably, the inner flame retardant layer is a fire resistant mica material.
[0015] (III) Beneficial effects
[0016] Compared with the prior art, the utility model provides a copper core overhead insulated cable having the following
[0017] Beneficial effects:
[0018] 1. The copper core overhead insulated cable improves the wear resistance, corrosion resistance and pressure resistance of the outer part of the overhead cable and prolongs the service life of the overhead cable by setting up an armored protective layer, a protective layer, a compression-resistant layer, a corrosion-resistant layer, a waterproof layer, an outer flame-retardant layer, a first high modulus high-strength polymer layer, a flexible steel belt and a second high modulus high-strength polymer layer.
[0019] 2. The copper core overhead insulated cable improves the high temperature resistance of the core through the arrangement of an outer metal shielding layer, an insulating filling layer, a core, a wrapping, an inner metal shielding layer, an inner flame retardant layer, and an anti-tension rope, thereby further protecting the cable core. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the cable of the utility model;
[0021] Figure 2 This is a schematic diagram of the protective layer and related structures of the utility model;
[0022] Figure 3 This is a schematic diagram of the waterproof layer and related structures of the utility model;
[0023] Figure 4 This is a schematic diagram of the wire core and related structures of the utility model.
[0024] In the figure: 1. Armored protective layer; 2. Protective layer; 3. Pressure-resistant layer; 4. Corrosion-resistant layer; 5. Waterproof layer; 6. External flame-retardant layer; 7. First high modulus and high strength polymer layer; 8. Flexible steel belt; 9. Second high modulus and high strength polymer layer; 10. External metal shielding layer; 11. Insulating filling layer; 12. Wire core; 13. Wrapping; 14. Internal metal shielding layer; 15. Internal flame-retardant layer; 16. Anti-pulling rope. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. Based on the embodiments in the embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection.
[0026] Embodiment 1:
[0027] See also Figure 1-4 , a copper core overhead insulated cable, comprising an armored steel wire layer 1, a protective layer 2 is provided on the inner side of the armored steel wire layer 1, and a pressure-resistant layer 3 is provided on the inner side of the protective layer 2;
[0028] The protective layer 2 includes a corrosion-resistant layer 4, a waterproof layer 5, and an outer flame-retardant layer 6. The inner side of the corrosion-resistant layer 4 is provided with a waterproof layer 5, the inner side of the waterproof layer 5 is provided with an outer flame-retardant layer 6, and the outer side of the corrosion-resistant layer 4 is connected to the inner side of the armored steel wire layer 1;
[0029] The compression-resistant layer 3 includes a first high modulus high strength polymer layer 7, a flexible steel belt 8, and a second high modulus high strength polymer layer 9. The first high modulus high strength polymer layer 7 is ringed with the flexible steel belt 8 on its inner side, and the flexible steel belt 8 is ringed with the second high modulus high strength polymer layer 9 on its inner side.
[0030] Preferably, the material of the corrosion-resistant layer 4 is polytetrafluoroethylene, and the material of the waterproof layer 5 is TPU special protective material.
[0031] Working principle: The surface of the cable is protected by the armored steel wire layer 1. The corrosion-resistant layer 4 at the bottom of the armored steel wire layer 1 is made of polytetrafluoroethylene material, which has excellent chemical stability, corrosion resistance, sealing, high lubrication and non-stickiness, electrical insulation and good anti-aging resistance, thereby improving the corrosion resistance of the cable. The waterproof layer 5 is a special TPU protective material with high elasticity, high strength, oil resistance and aging resistance, thereby improving the waterproof effect of the cable, thereby effectively improving the wear resistance and corrosion resistance of the outer protection ring of the cable. The first high modulus high-strength polymer layer 7, the second high modulus high-strength polymer layer 9 and the flexible steel belt 8 are arranged in the pressure-resistant layer 3, wherein the high modulus high-strength polymer layer has good pressure resistance. At the same time, the flexible steel belt 8 is arranged between the first and second high modulus high-strength polymer layers to support the first high modulus high-strength polymer layer 7 and the second high modulus high-strength polymer layer 9, thereby further improving the pressure resistance. Through the arrangement of the protective layer and the pressure-resistant layer 3, the wire core 12 in the cable can be protected from damage, thereby improving the service life of the cable.
[0032] Embodiment 2:
[0033] See also Figure 1-4 A plurality of wire cores 12 are arranged inside the insulating filling layer 11, a wrapping member 13 is arranged on the outer side of the plurality of wire cores 12, an inner metal shielding layer 14 is arranged on the outer side of the wrapping member 13, an inner flame retardant layer 15 is arranged on the outer side of the inner metal shielding layer 14, an outer metal shielding layer 10 is arranged on the inner side of the protective layer 2, and an insulating filling layer 11 is arranged on the inner side of the outer metal shielding layer 10.
[0034] Preferably, a plurality of tension-resistant ropes 16 are arranged inside the insulating filling layer 11 , and the plurality of tension-resistant ropes 16 are distributed in a row with the insulating filling layer 11 as the center.
[0035] Preferably, the outer flame retardant layer 6 is a cross-linked polyethylene flame retardant material.
[0036] Preferably, the inner flame retardant layer 15 is a fire-resistant mica material.
[0037] Working principle: The setting of the inner metal shielding layer 14 and the outer metal shielding layer 10 can reduce the electromagnetic interference to the core 12, and the setting of the insulating filling layer 11 can isolate the wires to prevent people from being injured by electric shock. The outer flame retardant layer 6 is a cross-linked polyethylene flame retardant material, and the cross-linked polyethylene flame retardant material does not contain halogen and is environmentally friendly. At the same time, the cross-linked polyethylene flame retardant material has good flame retardancy and improves the fire prevention effect. The inner flame retardant layer 15 outside the core 12 is a fire-resistant mica material, which has good fire resistance and improves the high temperature resistance of the core 12, thereby further protecting the cable core 12.
[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A copper core overhead insulated cable, comprising an armored steel wire layer (1), characterized in that: The inner ring of the armored steel wire layer (1) is provided with a protective layer (2), the inner ring of the protective layer (2) is provided with a pressure-resistant layer (3), the inner ring of the protective layer (2) is provided with an outer metal shielding layer (10), and the inner ring of the outer metal shielding layer (10) is provided with an insulating filling layer (11); The protective layer (2) comprises a corrosion-resistant layer (4), a waterproof layer (5), and an outer flame-retardant layer (6); the waterproof layer (5) is provided on the inner side of the corrosion-resistant layer (4); the outer side of the waterproof layer (5) is provided on the inner side of the outer flame-retardant layer (6); and the outer side of the corrosion-resistant layer (4) is connected to the inner side of the armored steel wire layer (1); The compression-resistant layer (3) comprises a first high modulus high strength polymer layer (7), a flexible steel belt (8), and a second high modulus high strength polymer layer (9); the first high modulus high strength polymer layer (7) is provided with a flexible steel belt (8) on the inner side ring; and the flexible steel belt (8) is provided with a second high modulus high strength polymer layer (9) on the inner side ring.
2. A copper core overhead insulated cable according to claim 1, characterized in that: The inner side of the outer flame retardant layer (6) is connected to the outer side of the first high modulus and high strength polymer layer (7), and the inner side of the second high modulus and high strength polymer layer (9) is connected to the outer side of the outer metal shielding layer (10).
3. A copper core overhead insulated cable according to claim 1, characterized in that: A plurality of wire cores (12) are arranged inside the insulating filling layer (11), a wrapping member (13) is arranged on the outer side of the plurality of wire cores (12), an inner metal shielding layer (14) is arranged on the outer side of the wrapping member (13), and an inner flame retardant layer (15) is arranged on the outer side of the inner metal shielding layer (14).
4. A copper core overhead insulated cable according to claim 1, characterized in that: A plurality of tension-resistant ropes (16) are arranged inside the insulating filling layer (11), and the plurality of tension-resistant ropes (16) are distributed in a row with the insulating filling layer (11) as the center.
5. A copper core overhead insulated cable according to claim 1, characterized in that: The material of the corrosion-resistant layer (4) is polytetrafluoroethylene, and the material of the waterproof layer (5) is TPU special protective material.
6. A copper core overhead insulated cable according to claim 1, characterized in that: The outer flame retardant layer (6) is a cross-linked polyethylene flame retardant material.
7. A copper core overhead insulated cable according to claim 3, characterized in that: The inner flame retardant layer (15) is made of fire-resistant mica material.