Multi-cable-core corrosion-resistant power cable

Abstract

The utility model discloses a multi-cable-core corrosion-resistant power cable which sequentially comprises an outer protective layer, an outer corrosion-resistant layer, a waterproof layer, a wrapping layer and a filling layer from outside to inside, a tensile rope, a plurality of first cable cores and a plurality of second cable cores are arranged in the filling layer, and the first cable cores and the second cable cores are alternately distributed. According to the power cable, the first inner corrosion-resistant layer, the second inner corrosion-resistant layer and the outer corrosion-resistant layer are arranged, so that the cable can resist corrosion of various severe environments, and the service life is prolonged. By arranging the tensile rope and the first cable cores and the second cable cores which are alternately distributed, the cable is more stable when bearing an external force and is not easy to break or deform. And by arranging the first shielding layer, the second shielding layer and the aluminum plastic wrapping layer, external electromagnetic interference can be effectively shielded, and stable transmission of signals in the cable is ensured. And the water-blocking performance of the cable is improved through the water-blocking layer.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically to a multi-core corrosion-resistant power cable. Background Art

[0002] As an indispensable component of the power system, power cables play an important role in power transmission and distribution. With the rapid development of the power industry and the continuous growth of power demand, the requirements for power cables are becoming increasingly higher.

[0003] Some existing power cables are susceptible to corrosion in harsh environments, such as high humidity and highly corrosive environments. This can damage the cable's outer sheath, further damaging the cable's internal structure and even causing short circuits or failures. Furthermore, they are susceptible to moisture in humid environments, which can degrade insulation performance. Some power cables are prone to breakage or deformation when subjected to external forces, such as pulling or squeezing, compromising the cable's stability and safety. Some power cables also have poor shielding performance, making them susceptible to external electromagnetic interference during signal transmission, leading to signal degradation or transmission interruptions. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provides a multi-core corrosion-resistant power cable.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a power cable, comprising, from the outside to the inside, an outer sheath, an outer corrosion-resistant layer, a water-blocking layer, a wrapping layer and a filling layer; a tensile rope, a plurality of first cable cores and a plurality of second cable cores are arranged in the filling layer; the plurality of first cable cores surround the tensile rope; a second cable core is provided between each of two adjacent first cable cores and the filling layer; the first cable core comprises, from the inside to the outside, a first conductor, a first insulating layer, a first shielding layer and a first inner corrosion-resistant layer; the second cable core comprises, from the inside to the outside, a second conductor, a second insulating layer, a second shielding layer and a second inner corrosion-resistant layer; the outer corrosion-resistant layer is a polytetrafluoroethylene corrosion-resistant layer; the first inner corrosion-resistant layer is made of fluororubber; and the second inner corrosion-resistant layer is made of fluororubber.

[0006] Furthermore, the first insulating layer and the second insulating layer are both polyvinyl chloride insulating layers.

[0007] Thus the cable has better insulation performance.

[0008] Furthermore, the first shielding layer and the second shielding layer are both copper wire braided shielding layers.

[0009] Thereby improving the electromagnetic shielding performance of the cable.

[0010] Furthermore, the wrapping layer is an aluminum-plastic wrapping layer.

[0011] Therefore, the aluminum-plastic wrapping layer has good electromagnetic shielding performance and good corrosion resistance.

[0012] Furthermore, the outer protective layer is made of polyvinyl chloride material.

[0013] This protects the internal structure of the cable.

[0014] Furthermore, there are three first cable cores, and the three first cable cores are distributed in a ring shape with equal intervals.

[0015] Thereby improving the tensile strength of the cable.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The power cable of the present application is provided with a first inner corrosion-resistant layer, a second inner corrosion-resistant layer and an outer corrosion-resistant layer, so that the cable can resist corrosion in various harsh environments and extend its service life.

[0018] 2. The power cable of the present application is provided with a tensile rope and alternately distributed first cable cores and second cable cores, so that the cable is more stable when subjected to external forces and is not easy to break or deform.

[0019] 3. The power cable of the present application is provided with a first shielding layer, a second shielding layer and an aluminum-plastic wrapping layer, which effectively shields external electromagnetic interference and ensures stable transmission of signals inside the cable.

[0020] 4. The power cable of the present application is provided with a water-blocking layer, thereby improving the water-blocking performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the power cable;

[0022] Figure 2 This is an enlarged view of area A;

[0023] Figure 3 This is a cross-sectional view of the power cable.

[0024] Explanation of the accompanying drawings: outer sheath 1; outer corrosion-resistant layer 2; water-blocking layer 3; sheathing layer 4; filling layer 5; tensile rope 6; first cable core 7; first conductor 7.1; first insulation layer 7.2; first shielding layer 7.3; first inner corrosion-resistant layer 7.4; second cable core 8; second conductor 8.1; second insulation layer 8.2; second shielding layer 8.3; second inner corrosion-resistant layer 8.4. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in 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 creative efforts are within the scope of protection of the present invention.

[0026] The utility model provides Figure 1-3 The multi-core corrosion-resistant power cable shown includes, from the outside to the inside, an outer sheath 1, an outer corrosion-resistant layer 2, a water-blocking layer 3, a wrapping layer 4 and a filling layer 5. A tensile rope 6, multiple first cable cores 7 and multiple second cable cores 8 are arranged in the filling layer 5. The multiple first cable cores 7 surround the tensile rope 6. There is a second cable core 8 between each adjacent first cable core 7 and the filling layer 5. The first cable core 7 includes, from the inside to the outside, a first conductor 7.1, a first insulating layer 7.2, a first shielding layer 7.3 and a first inner corrosion-resistant layer 7.4. The second cable core 8 includes, from the inside to the outside, a second conductor 8.1, a second insulating layer 8.2, a second shielding layer 8.3 and a second inner corrosion-resistant layer 8.4. The outer corrosion-resistant layer 2 is a polytetrafluoroethylene corrosion-resistant layer, the first inner corrosion-resistant layer 7.4 is made of fluororubber, and the second inner corrosion-resistant layer 8.4 is made of fluororubber.

[0027] The first insulating layer 7.2 and the second insulating layer 8.2 are both polyvinyl chloride (PVC) insulating layers. The first shielding layer 7.3 and the second shielding layer 8.3 are both copper wire braided shielding layers. The wrapping layer 4 is an aluminum-plastic wrapping layer. The outer sheath 1 is made of PVC. There are three first cable cores 7, which are evenly spaced in a circular pattern.

[0028] Working Principle: The power cable of the present application is provided with a first inner corrosion-resistant layer, a second inner corrosion-resistant layer, and an outer corrosion-resistant layer, thereby enabling the cable to resist corrosion in a variety of harsh environments and extend its service life. By providing a tensile rope and alternating first and second cable cores, the cable is more stable when subjected to external forces and is less likely to break or deform. The provision of the first shielding layer, the second shielding layer, and the aluminum-plastic wrapping layer can effectively shield external electromagnetic interference and ensure stable transmission of signals within the cable. The water-blocking layer improves the water-blocking performance of the cable.

[0029] During the specific production, the prepared first cable cores are distributed in a circular shape with equal spacing, and a tensile rope is placed at the center. Then, a second cable core is placed between two adjacent first cable cores, and the multiple cable cores and tensile ropes are wrapped into a whole using an aluminum-plastic wrapping layer, and the gaps between the cable cores are filled with fillers to provide additional protection and support. The aluminum-plastic wrapping layer not only has good electromagnetic shielding performance, but also enhances the corrosion resistance of the cable. Then, a water-blocking layer is prepared outside the wrapping layer to improve the water-blocking performance of the cable. Then, an external extruded polytetrafluoroethylene corrosion-resistant layer is prepared outside the water-blocking layer to further improve the cable's ability to resist external corrosive environments. Finally, an outer sheath is extruded outside the outer corrosion-resistant layer to protect the internal structure of the cable.

[0030] Although the present invention has been illustrated and described with respect to preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A multi-core corrosion-resistant power cable, characterized in that: The cable comprises an outer protective layer (1), an outer corrosion-resistant layer (2), a water-blocking layer (3), a wrapping layer (4) and a filling layer (5) in order from the outside to the inside. A tensile rope (6), a plurality of first cable cores (7) and a plurality of second cable cores (8) are arranged in the filling layer (5). The plurality of first cable cores (7) surround the tensile rope (6). A second cable core (8) is provided between each of two adjacent first cable cores (7) and the filling layer (5). The first cable core (7) comprises a first conductor (7.1), A first insulating layer (7.2), a first shielding layer (7.3) and a first inner corrosion-resistant layer (7.4); the second cable core (8) comprises, from the inside to the outside, a second conductor (8.1), a second insulating layer (8.2), a second shielding layer (8.3) and a second inner corrosion-resistant layer (8.4); the outer corrosion-resistant layer (2) is a polytetrafluoroethylene corrosion-resistant layer; the first inner corrosion-resistant layer (7.4) is made of fluororubber; and the second inner corrosion-resistant layer (8.4) is made of fluororubber.

2. The multi-core corrosion-resistant power cable according to claim 1, characterized in that: The first insulating layer (7.2) and the second insulating layer (8.2) are both polyvinyl chloride insulating layers.

3. The multi-core corrosion-resistant power cable according to claim 1, characterized in that: The first shielding layer (7.3) and the second shielding layer (8.3) are both copper wire braided shielding layers.

4. The multi-core corrosion-resistant power cable according to claim 1, characterized in that: The wrapping layer (4) is an aluminum-plastic wrapping layer.

5. The multi-core corrosion-resistant power cable according to claim 1, characterized in that: The outer protective layer (1) is made of polyvinyl chloride material.

6. The multi-core corrosion-resistant power cable according to claim 1, characterized in that: There are three first cable cores (7), and the three first cable cores (7) are distributed in a ring-like shape with equal intervals.

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