Anti-twist waterproof power cable

Abstract

The utility model relates to power cable technical field especially is a kind of anti-torsion waterproof power cable, including left center column strip, the left and right sides and the upper and lower ends of center column strip are all fixedly connected with limiting strut, the included angle between adjacent two limiting strut is fixedly connected with limiting ring piece, the inner ring surface of limiting ring piece is bonded with cable conductor body, in the utility model, through the center column strip, limiting ring piece, limiting strut, cable conductor body, auxiliary boss column, first glass fibre layer, rubber layer and second glass fibre layer being set, the anti-torsion waterproof power cable can be conveniently compounded in actual production and processing, and the inner support auxiliary reinforcing structure is added to the waterproof power cable, so that the overall anti-torsion deformation capacity is significantly improved, and the anti-torsion waterproof power cable is prevented from being prone to aging due to outer sheath layer, so that the problem of internal structure layer loosening is caused.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically to a torsion-resistant waterproof power cable. Background Technology

[0002] In the construction of power systems, waterproof power cables are cables that can work normally in water and are collectively referred to as water-blocking (or waterproof) power cables. These cables need to have excellent waterproof functions in environments that are frequently immersed in water or are humid, such as underwater laying, to prevent water from penetrating into the cable and thus ensure the long-term stability of the cable underwater.

[0003] Currently, while existing waterproof power cables can have a special sheath added to their outer structure to provide some torsion resistance, the sheath is prone to aging due to external factors. Without the protection of the sheath, the internal structural layers of the cable are easily loosened, weakening its torsion resistance. Therefore, to address these issues, a torsion-resistant waterproof power cable is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a torsion-resistant waterproof power cable to solve the problem mentioned in the background art that the existing waterproof power cables have weak torsion resistance during production and use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An anti-torsion waterproof power cable includes a central column, with limiting struts fixedly connected to the left and right sides and the top and bottom ends of the central column. A limiting ring is fixedly connected in the included angle between two adjacent limiting struts. A cable conductor body is bonded to the inner ring surface of the limiting ring. An auxiliary protrusion is fixedly connected to the outside of the limiting strut. A first glass fiber layer is inserted into the outside of the auxiliary protrusion. A rubber layer is bonded to the outside of the first glass fiber layer. A second glass fiber layer is bonded to the outside of the rubber layer.

[0006] Preferably, the limiting ring and the cable conductor body are coaxially arranged, and the space between the cable conductor body and the limiting ring is filled with insulating powder.

[0007] Preferably, the number of cable conductor bodies and the number of limiting support rods correspond one-to-one, the connection between the limiting support rods and the central column forms a cross-shaped structure, and the auxiliary protrusion penetrates the rubber layer and inserts into the interior of the second glass fiber layer.

[0008] Preferably, an insulating inner layer is bonded to the outer surface of the second glass fiber layer, and a waterproof and breathable membrane layer is bonded to the outside of the insulating inner layer.

[0009] Preferably, an outer sheath layer is adhered to the outside of the waterproof and breathable membrane layer, and a waterproof outer layer is adhered to the outside of the outer sheath layer, wherein the thickness of the waterproof outer layer is less than the thickness of the outer sheath layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the central column, limiting ring, limiting strut, cable conductor body, auxiliary protrusion, first glass fiber layer, rubber layer, and second glass fiber layer are designed to facilitate the addition of an internal support reinforcement structure to the anti-torsion waterproof power cable during actual composite production. This structure is achieved through the auxiliary filling of insulating powder, significantly improving the cable's overall anti-torsion deformation capacity. This prevents the internal structural layers from loosening due to aging of the outer sheath, thus extending the cable's service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the central column structure of this utility model.

[0012] In the diagram: 1. Central column; 2. Limiting ring; 3. Limiting strut; 4. Cable conductor body; 5. Auxiliary protrusion; 6. First fiberglass layer; 7. Rubber layer; 8. Second fiberglass layer; 9. Inner insulating layer; 10. Waterproof and breathable membrane layer; 11. Outer sheath layer; 12. Waterproof outer layer. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-2 This utility model provides a technical solution: An anti-torsion waterproof power cable includes a central column 1, with limiting struts 3 fixedly connected to the left and right sides and the top and bottom ends of the central column 1. A limiting ring 2 is fixedly connected in the included angle between two adjacent limiting struts 3. A cable conductor body 4 is bonded to the inner ring surface of the limiting ring 2. An auxiliary protrusion 5 is fixedly connected to the outside of the limiting strut 3. A first glass fiber layer 6 is inserted into the outside of the auxiliary protrusion 5. A rubber layer 7 is bonded to the outside of the first glass fiber layer 6. A second glass fiber layer 8 is bonded to the outside of the rubber layer 7.

[0015] The limiting ring 2 and the cable conductor body 4 are coaxially arranged. Insulating powder is filled between the cable conductor body 4 and the limiting ring 2. The filling of the insulating powder serves as an auxiliary function for insulation and filling. The number of cable conductor bodies 4 corresponds one-to-one with the number of limiting support rods 3. The connection between the limiting support rods 3 and the central column 1 forms a "+" shaped structure. The auxiliary protrusion 5 penetrates the rubber layer 7 and inserts into the interior of the second glass fiber layer 8. The insertion of the auxiliary protrusion 5 can improve the efficiency of adding the first glass fiber layer 6 and the second glass fiber layer 8. The connection is tight; an insulating inner layer 9 is bonded to the outer surface of the second glass fiber layer 8, and a waterproof and breathable membrane layer 10 is bonded to the outside of the insulating inner layer 9. The insulating inner layer 9 provides insulation protection from the outside of the internal support and reinforcement structure; an outer sheath layer 11 is bonded to the outside of the waterproof and breathable membrane layer 10, and a waterproof outer layer 12 is bonded to the outside of the outer sheath layer 11. The thickness of the waterproof outer layer 12 is less than the thickness of the outer sheath layer 11. The double superposition of the waterproof outer layer 12 and the waterproof and breathable membrane layer 10 gives the waterproof power cable a good waterproof effect.

[0016] Workflow: During the composite production and processing of the waterproof power cable of this utility model, the central column 1 is used as the center point. The isolation paper on the inner ring surface of the limiting ring 2 is first torn off. With the auxiliary separation of multiple limiting support rods 3, multiple cable conductor bodies 4 are placed independently. Then, an appropriate amount of insulating powder is used for filling. Next, from the inside out, the first glass fiber layer 6, the insulation layer and the second glass fiber layer 8 are added to the outside of the multiple support rods. The first glass fiber layer 6, the insulation layer and the second glass fiber layer 8 are tightly inserted with multiple auxiliary protrusions 5 to form an internal support auxiliary reinforcement structure, which effectively improves the overall torsional deformation resistance of the power cable. Then, following the production process, from the inside out, the inner insulation layer 9, the waterproof and breathable membrane layer 10, the outer sheath layer 11 and the waterproof outer layer 12 are superimposed on the outside of the second glass fiber layer 8 to form a complete composite structure. After this, the waterproof power cable can have good insulation and waterproof effects when used, so that it can be put into line use later.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A torsion-resistant waterproof power cable, comprising a central post (1), characterized in that: The central column (1) is fixedly connected to the left and right sides and the upper and lower ends with limiting struts (3). A limiting ring (2) is fixedly connected in the included angle between two adjacent limiting struts (3). The inner ring surface of the limiting ring (2) is bonded with the cable conductor body (4). An auxiliary protrusion (5) is fixedly connected to the outside of the limiting strut (3). A first glass fiber layer (6) is inserted into the outside of the auxiliary protrusion (5). A rubber layer (7) is bonded to the outside of the first glass fiber layer (6). A second glass fiber layer (8) is bonded to the outside of the rubber layer (7).

2. The anti-torsion waterproof power cable according to claim 1, characterized in that: The limiting ring (2) and the cable conductor body (4) are coaxially arranged, and insulating powder is filled between the cable conductor body (4) and the limiting ring (2).

3. The anti-torsion waterproof power cable according to claim 1, characterized in that: The number of cable conductor bodies (4) and the number of limiting struts (3) are arranged in a one-to-one correspondence. The connection between the limiting struts (3) and the central column (1) forms a "+" shaped structure. The auxiliary protrusion (5) penetrates the rubber layer (7) and is inserted into the interior of the second glass fiber layer (8).

4. The anti-torsion waterproof power cable according to claim 1, characterized in that: An insulating inner layer (9) is bonded to the outer surface of the second glass fiber layer (8), and a waterproof and breathable membrane layer (10) is bonded to the outside of the insulating inner layer (9).

5. The anti-torsion waterproof power cable according to claim 4, characterized in that: The waterproof and breathable membrane layer (10) is bonded to the outside of an outer sheath layer (11), and the outer sheath layer (11) is bonded to the outside of a waterproof outer layer (12). The thickness of the waterproof outer layer (12) is less than the thickness of the outer sheath layer (11).

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