High-voltage cable for power grid
By using a warning layer made of metal foil in the functional layer of the high-voltage cable, the reflection, refraction and scattering of light are used to remind the staff of the damaged areas, the problems of vulnerability to high-voltage cables during installation and inconvenient inspection at high altitude are solved, and damage is discovered and repaired in a timely manner to avoid safety accidents.
Patent Information
- Application Number
- CN202420960846.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-05-07
AI Technical Summary
High-voltage cables are susceptible to violent operation damage during installation and face severe weather at high altitudes, which increases the risk of damage and is inconvenient to check for damage.
A high-voltage cable for power grid is designed, and a functional layer includes an outer protective layer, an early warning layer and an inner protective layer. The early warning layer is pressed from metal foil, and the surface is equipped with multiple tiny concave and convex surfaces to remind staff of the damaged areas by reflecting, refraction and scattering of sunlight.
When the outer protective layer of the cable is damaged, the warning layer is exposed and reminds the staff through reflection, refraction and scattering of light, and arranges maintenance in a timely manner to avoid safety accidents and property losses.
Smart Images
Figure CN222867303U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, in particular to a high-voltage cable for a power grid. Background Art
[0002] High-voltage cable is a type of power cable, which refers to the power cable used to transmit power between 1kv-1000kv. It is mostly used in power transmission and distribution. The components of high-voltage cable from the inside to the outside include: conductor, insulation, inner sheath, filler (armor), and outer insulation. Armored high-voltage cables are mainly used for underground burial, which can withstand high-intensity compression on the ground and prevent damage from other external forces. As a link in the cable, high-voltage cables are mainly used in important places and densely populated areas, including: government agencies, large institutions, scientific research institutes, scenic spots, highways, distribution rooms, substations, downtown hubs, residential areas, etc.
[0003] The construction process of high-voltage cables is poor during installation. In order to speed up the construction progress, construction workers often perform violent acts such as dropping and throwing high-voltage cables, which damage the cables. After the cables are installed, they will also face severe weather conditions at high altitudes. Damaged cables are more prone to breakage. Since the cables are installed at high altitudes, it causes a lot of inconvenience to the staff when checking for cable damage.
[0004] Therefore, the utility model provides a high-voltage cable for a power grid. Utility Model Content
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-voltage cable for a power grid, comprising a battery core, an inner insulating layer, an outer insulating layer and a functional layer, the outer surface of the battery core is provided with the inner insulating layer, the outer surface of the inner insulating layer is provided with the functional layer, the outer surface of the functional layer is provided with an outer insulating layer, and the outer surface of the outer insulating layer is provided with a metal wrapping layer, characterized in that: the functional layer comprises an outer protective layer, an early warning layer and an inner protective layer, the inner protective layer is provided on the outer surface of the inner insulating layer, the early warning layer is provided on the outer surface of the inner protective layer, and the outer protective layer is provided on the outer surface of the early warning layer.
[0006] In a preferred example, the present invention can be further configured as follows: the warning layer is formed by pressing metal foil.
[0007] In a preferred example, the present invention can be further configured as follows: the cavity is spherical, and a plurality of tiny concave and convex surfaces are provided on the surface of the metal foil.
[0008] In a preferred example, the present invention can be further configured as follows: the material of the battery core is aluminum.
[0009] In a preferred example, the present invention can be further configured as follows: the outer protective layer and the inner protective layer are made of conventional materials such as polyethylene, polyvinyl chloride, etc.
[0010] In a preferred example, the present invention can be further configured as follows: the inner insulating layer can be made of cross-linked polyethylene insulating material.
[0011] Compared with the prior art, the utility model has the following beneficial effects: when the outer protective layer of the cable is damaged, the early warning layer is exposed to the outside world. The early warning layer reflects, refracts and scatters sunlight to remind the staff to pay attention to the damage, arrange maintenance in time, and avoid safety accidents and property losses. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.
[0013] Figure 1 It is a structural diagram of the utility model;
[0014] Figure numerals: 1, battery cell; 2, inner insulating layer; 3, functional layer; 31, outer protective layer; 32, early warning layer; 33, inner protective layer; 4, outer insulating layer. DETAILED DESCRIPTION
[0015] The utility model is described in detail below with reference to the accompanying drawings:
[0016] like Figure 1 As shown, the present application provides a high-voltage cable for a power grid, including a battery core 1, an inner insulating layer 2, an outer insulating layer 4 and a functional layer 3. The outer surface of the battery core 1 is provided with the inner insulating layer 2, the outer surface of the inner insulating layer 2 is provided with the functional layer 3, the outer surface of the functional layer 3 is provided with the outer insulating layer 4, the outer surface of the outer insulating layer 4 is provided with a metal wrapping layer 5, the functional layer 3 includes an outer protective layer 31, an early warning layer 32 and an inner protective layer 33, the inner protective layer 33 is provided on the outer surface of the inner insulating layer 2, the early warning layer 32 is provided on the outer surface of the inner protective layer 33, and the outer protective layer 31 is provided on the outer surface of the early warning layer 32.
[0017] By adopting the above technical solution, when a cable in the sky is damaged, the early warning layer is exposed on the outer layer. When observed from the outside, light will be emitted from the damaged part, reminding the staff that there is damage here.
[0018] like Figure 1 As shown, the warning layer 32 is formed by pressing a metal foil, and a plurality of tiny concave and convex surfaces are arranged on the surface of the metal foil.
[0019] By adopting the above technical solution, metal foil is an excellent reflective material. The warning layer uses metal foil as the base material and forms a tiny concave and convex surface through special treatment, thereby realizing light reflection, scattering and refraction, thereby reminding staff that there is damage here.
[0020] like Figure 1 As shown, the material of the battery core 1 is copper or aluminum. Copper is one of the metals with the best electrical conductivity, low resistivity, and has good performance in current carrying capacity, current density, dynamic response and other properties. Therefore, the production cost of copper conductor high-voltage cables is relatively high, but they have high power transmission capacity and good stability, while aluminum has the advantages of low price and light weight, but compared with copper conductor high-voltage cables, aluminum conductor high-voltage cables have poor electrical conductivity and relatively large line loss, so they are suitable for short-distance, small-capacity, and low-voltage transmission.
[0021] like Figure 1 As shown, the outer protective layer 31 and the inner protective layer 33 are made of conventional materials such as polyethylene, polyvinyl chloride, etc.
[0022] like Figure 1 As shown, the inner insulating layer 2 can be made of cross-linked polyethylene insulation material. Cross-linked polyethylene has excellent heat resistance, insulation performance, mechanical properties and chemical resistance.
[0023] Working principle: When the outer protective layer of the cable is damaged, the warning layer is exposed to the outside world. The warning layer reflects, refracts and scatters sunlight to remind staff to pay attention to the damage and arrange maintenance in time to avoid safety accidents and property losses.
[0024] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.
Claims
1. A high voltage cable for a power grid, characterized in that: The invention comprises a battery cell (1), an inner insulating layer (2), an outer insulating layer (4) and a functional layer (3); the inner insulating layer (2) is arranged on the outer surface of the battery cell (1); the functional layer (3) is arranged on the outer surface of the inner insulating layer (2); the outer insulating layer (4) is arranged on the outer surface of the functional layer (3); the metal wrapping layer (5) is arranged on the outer surface of the outer insulating layer (4); the functional layer (3) comprises an outer protective layer (31), an early warning layer (32) and an inner protective layer (33); the inner protective layer (33) is arranged on the outer surface of the inner insulating layer (2); the early warning layer (32) is arranged on the outer surface of the inner protective layer (33); and the outer protective layer (31) is arranged on the outer surface of the early warning layer (32).
2. A high voltage cable for a power grid according to claim 1, characterized in that: The early warning layer (32) is formed by pressing metal foil.
3. A high voltage cable for a power grid according to claim 2, characterized in that: A plurality of tiny concave and convex surfaces are arranged on the surface of the metal foil.
4. A high voltage cable for a power grid according to claim 1, characterized in that: The material of the battery core (1) is aluminum.
5. A high voltage cable for a power grid according to claim 1, characterized in that: The outer protective layer (31) and the inner protective layer (33) are made of polyethylene or polyvinyl chloride.
6. A high voltage cable for a power grid according to claim 1, characterized in that: The inner insulating layer (2) may be made of cross-linked polyethylene insulating material.