An aquatic floating cable

Abstract

The utility model relates to the technical field of power cable discloses a kind of water floating cable, including conductor, the conductor surface is wrapped with insulating layer, the conductor and the insulating layer jointly constitute insulated core, a plurality of the insulated core is stranded and constitutes cable core, the cable core outer surface is provided with first tight layer, the first tight layer outer surface is fixedly connected with first support layer, the first support layer surface is fixedly connected with first outer sheath, a plurality of first cavities are arranged in the first support layer inside.The utility model water floating cable is increased by setting support layer the gap in the cable, increase the buoyancy of cable in water, reduce the weight of cable itself, to optimize the comprehensive density of cable whole, by the joint action of cable core, first tight layer, first support layer and first outer sheath, cable comprehensive density can be reduced while making cable have good waterproof capacity, reach the purpose of making cable have water floating capacity.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, and in particular to a floating cable for water. Background Technology

[0002] Currently, ordinary water-blocking cables or armored submarine cables are commonly used for waterborne and near-shore operations. These cables have a density much greater than that of water, sink to the bottom after being laid, and are easily damaged by reefs, anchors, and fishing gear, making maintenance difficult. They are also prone to twisting and tangling during deployment and retrieval, making them unsuitable for frequent relocation or temporary deployment.

[0003] To address the issue of cable sinking, existing technologies include adding foam floats such as EPS, EPE, and PU inside or outside the cable, or directly filling the sheath with foamed polyethylene. While these solutions can achieve the cable's floating effect, the large number of foam floats results in complex processes, bulky structures, and easy separation between the foam and the cable core, leading to poor mechanical properties. Furthermore, the closed-cell rate of the foamed polyethylene sheath is unstable, and under long-term water pressure, it is prone to water ingress and weight gain, causing a sudden drop in buoyancy or even complete sinking.

[0004] In view of the above-mentioned defects, there is a need for a floating cable with simple structure, stable buoyancy performance and resistance to environmental aging, in order to overcome the shortcomings of the existing technology. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a floating cable, which aims to improve the problems of easy peeling and water ingress at the interface between the cable sheath and the cable core in the prior art, which affect its use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a floating cable for water, comprising a conductor, the surface of which is covered with an insulating layer, the conductor and the insulating layer together constituting an insulated core, a plurality of the insulated cores being twisted together to form a cable core, a first binding layer being provided on the outer surface of the cable core, a first support layer being fixedly connected to the outer surface of the first binding layer, a first outer sheath being fixedly connected to the surface of the first support layer, and a plurality of first cavities being provided inside the first support layer; The above technical solution optimizes the overall density of the cable through the support layer, creating conditions for realizing the cable's floating function.

[0007] Preferably, the cable further includes a connecting layer, one side of which is fixedly connected to the side adjacent to the first outer sheath, and the other side of which is fixedly connected to a second outer sheath. A second support layer is fixedly connected to the inner surface of the second outer sheath, and the second support layer has multiple second cavities inside. The support ribs formed by the first support layer and the second support layer through the cavities are in different positions. The above technical solution aims to improve the yield of the support layer by setting the support layer as a segmented structure, enabling the support layer to be extruded in segments through the mold, thus avoiding cavity deformation during the extrusion of the support layer.

[0008] Preferably, the cable further includes a second securing layer, the inner surface of the second securing layer being fixedly connected to the outer surface of the cable core, a third support layer being fixedly connected to the outer surface of the second securing layer, and a third outer sheath being fixedly connected to the outer surface of the third support layer. The above technical solution, by setting the overall cross-section of the cable to a rectangular strip, can prevent the cable from flipping due to long-term water flow impact.

[0009] Preferably, the surface of the connecting layer is uniformly provided with grooves, which are used to enhance the bending ability of the connecting layer.

[0010] Preferably, the first cavity and the second cavity are staggered.

[0011] Preferably, metal strips are fixedly connected to both sides of the surface of the connecting layer, and the metal strips are used to strengthen the connection.

[0012] Preferably, the third support layer has multiple third cavities inside, and the third cavities are evenly distributed on both sides of the second binding layer.

[0013] Preferably, the third support layer, the third outer protective layer, and the second fastening layer are all rectangular.

[0014] This utility model has the following beneficial effects: This utility model of a floating cable increases the internal gaps of the cable by setting a support layer, thereby increasing the buoyancy of the cable in water and reducing its own weight. This allows the overall density of the cable to be lower than that of the water, giving it better buoyancy.

[0015] This invention, by setting the support layer to a multi-segment design, can avoid the problem of water entering the cavity due to support layer damage, which would affect cable density. Attached Figure Description

[0016] Figure 1 This is a top view of a floating cable according to the present invention; Figure 2 This is a schematic diagram of a segmented connection of a floating cable for waterborne applications according to this utility model. Figure 3 This is a schematic cross-sectional view of the connection layer of a floating cable according to the present invention; Figure 4 This is a schematic diagram of another support layer structure for a floating cable of this utility model.

[0017] Legend: 1. Conductor; 2. Insulating layer; 3. First binding layer; 4. First supporting layer; 5. First outer sheath; 6. Connecting layer; 7. First cavity; 8. Second outer sheath; 9. Groove; 10. Second supporting layer; 11. Metal strip; 12. Second cavity; 13. Third supporting layer; 14. Third cavity; 15. Third outer sheath; 16. Second binding layer. Detailed Implementation

[0018] 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.

[0019] Example 1: Reference Figure 1 An embodiment of this utility model provides: a floating cable for water, including a conductor 1, an insulation layer 2 wrapped around the surface of the conductor 1, the conductor 1 and the insulation layer 2 together constitute an insulated wire core, several insulated wire cores are twisted together to form a cable core, a first binding layer 3 is provided on the outer surface of the cable core, a first support layer 4 is fixedly connected to the outer surface of the first binding layer 3, a first outer sheath 5 is fixedly connected to the surface of the first support layer 4, and a plurality of first cavities 7 are opened inside the first support layer 4.

[0020] Specifically, conductor 1 is a conductor made of multiple strands of tin-plated copper wires, insulation layer 2 is made of polyethylene material extrusion, binding layer 3 is made of water-blocking material extrusion, and support layer 4 is made of polyethylene material extrusion.

[0021] The first outer sheath 5 is made of polyurethane extrusion, which can make the overall density of the cable less than 1, ensuring that the cable can float for a long time. At the same time, it has good tensile strength, hydrolysis resistance and UV resistance, and also has wear resistance, salt spray resistance and low-temperature flexibility, thereby extending the service life of the floating cable and reducing maintenance costs.

[0022] Specifically, after the insulated wire core composed of conductor 1 and insulation layer 2 is stranded to form the cable core, the first tightening layer 3 can ensure that the cable core structure remains stable, preventing the insulated wire core from shifting when the cable moves or is subjected to force, thereby ensuring that the conductivity of conductor 1 is not affected. The insulation layer 2 covering the surface of conductor 1 can prevent current leakage, and the first tightening layer 3 can prevent moisture from entering the cable core, preventing conductor 1 from corroding due to moisture.

[0023] Example 2: Reference Figures 2-3The cable also includes a connecting layer 6, one side of which is fixedly connected to the side adjacent to the first outer sheath 5, and the other side of the connecting layer 6 is fixedly connected to a second outer sheath 8. A second support layer 10 is fixedly connected to the inner surface of the second outer sheath 8, and a plurality of second cavities 12 are opened inside the second support layer 10.

[0024] Specifically, the connecting layer 6 is made of polyurethane extrusion, the overall density of the cable is less than 1, and sealing rings are provided on both sides of the connecting layer 6 to connect with the supporting layers on both sides. At the same time, the connecting layer 6 has a bending ability by opening grooves 9 on its surface, which prevents the supporting layer from breaking when the cable is bent and improves the bending resistance of the cable.

[0025] By providing a first cavity 7 inside the first support layer 4 and a second cavity 12 inside the second support layer 10, the support ribs formed by the cavities in the first support layer 4 and the second support layer 10 are positioned differently. This disperses the external force on the cable to the support ribs at different locations, reducing local stress loads on the cable and extending its service life. This connection structure is particularly suitable for later maintenance of the cable.

[0026] Reference Figure 2 The surface of the connecting layer 6 is uniformly provided with grooves 9, which are used to enhance the bending ability of the connecting layer 6.

[0027] Specifically, the groove 9 provides deformation space for the connecting layer 6, which can reduce the material stress concentration of the connecting layer 6 during the bending process, thereby giving the connecting layer 6 better bending ability.

[0028] Reference Figure 2 The first cavity 7 and the second cavity 12 are misaligned.

[0029] Specifically, by staggering the first cavity 7 and the second cavity 12, it can be ensured that when the cable is partially damaged, the buoyancy loss is limited to a single failure area and will not spread to adjacent areas due to damage to the support layer.

[0030] Reference Figure 3 Metal strips 11 are fixedly connected to both sides of the surface of the connecting layer 6. The metal strips 11 are used to strengthen the connection.

[0031] Specifically, by wrapping a metal strip 11 around the cable core at the corresponding position where it connects to the support layer on both sides of each groove 9, the metal strip 11 can work together with the support layer connected on both sides to enhance the structural strength of the connection.

[0032] Example 3: Reference Figure 4The cable also includes a second binding layer 16, the inner surface of which is fixedly connected to the outer surface of the cable core, a third support layer 13 is fixedly connected to the outer surface of the second binding layer 16, and a third outer sheath 15 is fixedly connected to the outer surface of the third support layer 13.

[0033] Specifically, through the combined action of the third outer sheath 15, the second tightening layer 16, and the third support layer 13, the contact area between the cable and the water body is further expanded, thereby improving the stability of the cable in the water body.

[0034] Reference Figure 4 The third support layer 13 has multiple third cavities 14 inside, and the third cavities 14 are evenly distributed on both sides of the second binding layer 16.

[0035] Specifically, the third cavity 14 is evenly distributed on both sides of the second securing layer 16, so that the buoyancy is evenly distributed in the radial direction of the cable, ensuring that the cable maintains a balanced floating posture in the water and will not tilt or flip due to uneven buoyancy.

[0036] Reference Figure 4 The third support layer 13, the third outer protective layer 15, and the second fastening layer 16 are all rectangular; Specifically, the thickness of the top side of the second tightening layer 16 is set higher than the thickness of the side that is in contact with the third support layer 13. Since the third cavity 14 is not provided on the upper and lower sides of the second tightening layer 16, the tensile strength of the cable can be improved by increasing the thickness of the upper and lower sides of the second tightening layer 16, and the service life of the cable can be further extended.

[0037] Working principle: The support layer increases the overall volume of the cable, thereby increasing the volume of water it can drain. At the same time, it reduces the density per unit length of the cable, making the overall density of the cable lower. This allows the cable to initially float in water. Through the combined action of the cable core, the first binding layer 3, the first support layer 4, and the first outer sheath 5, the overall density of the cable can be reduced while giving the cable good waterproof ability, thus achieving the purpose of enabling the cable to float on water. On the other hand, by dividing the support layer into multiple segments, when a single support layer segment is damaged due to being scratched by reefs or other reasons, only that segment loses buoyancy, while adjacent segments are unaffected due to cavity misalignment, thus enabling the cable to still have the ability to float and preventing the cable from sinking as a whole due to local damage. In addition, by setting the binding layer, support layer and outer sheath on the outside of the cable core as rectangular strips, the overall contact area between the cable and the water can be further increased, thereby giving the cable better stability in water.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floating cable for water, comprising a conductor (1), characterized in that: The conductor (1) is wrapped with an insulating layer (2). The conductor (1) and the insulating layer (2) together form an insulated wire core. Several insulated wire cores are twisted together to form a cable core. A first binding layer (3) is provided on the outer surface of the cable core. A first support layer (4) is fixedly connected to the outer surface of the first binding layer (3). A first outer sheath (5) is fixedly connected to the surface of the first support layer (4). A plurality of first cavities (7) are opened inside the first support layer (4).

2. The floating cable according to claim 1, characterized in that: The cable also includes a connecting layer (6), one side of which is fixedly connected to the side adjacent to the first outer sheath (5), and the other side of which is fixedly connected to a second outer sheath (8). A second support layer (10) is fixedly connected to the inner surface of the second outer sheath (8). The second support layer (10) has multiple second cavities (12) inside. The support ribs formed by the first support layer (4) and the second support layer (10) through the cavities are in different positions.

3. A floating cable according to claim 1, characterized in that: The cable also includes a second binding layer (16), the inner surface of the second binding layer (16) is fixedly connected to the outer surface of the cable core, a third support layer (13) is fixedly connected to the outer surface of the second binding layer (16), and a third outer sheath (15) is fixedly connected to the outer surface of the third support layer (13).

4. A floating cable for water as described in claim 2, characterized in that: The surface of the connecting layer (6) is uniformly provided with grooves (9), which are used to enhance the bending ability of the connecting layer (6).

5. A floating cable according to claim 2, characterized in that: The first cavity (7) and the second cavity (12) are offset from each other.

6. A floating cable for water as described in claim 2, characterized in that: Metal strips (11) are fixedly connected to both sides of the surface of the connecting layer (6), and the metal strips (11) are used to strengthen the connection.

7. A floating cable according to claim 3, characterized in that: The third support layer (13) has multiple third cavities (14) inside, and the third cavities (14) are evenly arranged on both sides of the second binding layer (16).

8. A floating cable according to claim 3, characterized in that: The third support layer (13), the third outer protective layer (15), and the second tightening layer (16) are all rectangular.

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