High-strength waterproof power cable

Abstract

The utility model discloses a high-strength waterproof power cable, which comprises a plurality of cable core units, an outer insulating layer, an inner heat absorption layer, a water absorption layer, an outer heat absorption layer and an outer protective layer, the outer insulating layer wraps the plurality of cable core units, the inner heat absorption layer is arranged outside the outer insulating layer, the water absorption layer wraps the inner heat absorption layer, and the outer protective layer wraps the outer heat absorption layer. The outer heat absorption layer wraps the water absorption layer, the outer protection layer is arranged outside the heat absorption layer, a plurality of reinforcing ribs are arranged inside the outer protection layer, a plurality of protrusions are further arranged outside the outer protection layer in a protruding mode, and one reinforcing rib is arranged between every two adjacent protrusions. According to the waterproof cable, the inner heat absorption layer, the water absorption layer and the outer heat absorption layer are arranged, so that after the water absorption layer absorbs certain moisture, the inner heat absorption layer and the outer heat absorption layer can heat and absorb the moisture in the water absorption layer, the water absorption layer can be dried, the water absorption effect of the water absorption layer is recovered, and the waterproof performance of the cable is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a high-strength waterproof power cable. Background Art

[0002] In the power system, cables play the role of transmitting electric energy. The electric energy transmitted by cables provides the needs of industrial production and people's lives, so cables play an extremely important role in today's society. With the expansion of the application range of cables, the environmental conditions faced by cables in actual use are becoming more and more complex. Therefore, there are higher requirements for the strength and waterproof performance of cables.

[0003] In the prior art, a water-absorbing layer is often provided in a waterproof cable. However, after the water-absorbing layer absorbs a certain amount of water, the water-absorbing effect of the water-absorbing layer deteriorates, thereby deteriorating the waterproof effect of the waterproof cable. Utility Model Content

[0004] Based on this, it is necessary to provide a high-strength waterproof power cable with good waterproof effect.

[0005] The utility model adopts the following technical solution to solve the technical problem: a high-strength waterproof power cable, comprising a plurality of cable core units, an outer insulating layer, an inner heat absorbing layer, a water absorbing layer, an outer heat absorbing layer and an outer sheath, wherein the outer insulating layer is wrapped around the outside of the plurality of cable core units, the inner heat absorbing layer is arranged outside the outer insulating layer, the water absorbing layer is wrapped around the outside of the inner heat absorbing layer, the outer heat absorbing layer is wrapped around the outside of the water absorbing layer, a dehumidification film is arranged on one side of the inner heat absorbing layer and the outer heat absorbing layer close to the water absorbing layer, the outer sheath is arranged outside the outer heat absorbing layer, a plurality of reinforcing ribs are arranged inside the outer sheath, the plurality of reinforcing ribs are arranged at uniform and equal angles inside the outer sheath, a plurality of protrusions are also convexly provided on the outside of the outer sheath, the plurality of protrusions are arranged at uniform and equal angles on the outer sheath, and one reinforcing rib is arranged between two adjacent protrusions.

[0006] Furthermore, the outer insulating layer and the inner heat absorbing layer are also provided with an armor layer and a hydrophobic layer, the armor layer is wrapped around the outside of the outer insulating layer, and the inner heat absorbing layer is wrapped around the outside of the hydrophobic layer.

[0007] Furthermore, a flame retardant layer is provided between the outer heat absorption layer and the outer protective layer, the flame retardant layer is wrapped around the outside of the outer heat absorption layer, and the outer protective layer is wrapped around the outside of the flame retardant layer.

[0008] Furthermore, the number of the reinforcing ribs is the same as the number of the protrusions, and one reinforcing rib corresponds to one protrusion.

[0009] Furthermore, a partition is provided between the plurality of cable core units and the outer insulation layer, the partition comprising a core rod, a partition plate and a sleeve, the core rod is provided in the middle position of the plurality of cable core units, a central axis is provided inside the core rod, the sleeve is wrapped around the outside of the plurality of cable core units, the outer insulation layer is wrapped around the outside of the sleeve, and the partition plate is provided between the core rod and the sleeve.

[0010] Furthermore, the central axis is made of iron wire.

[0011] Furthermore, there are a plurality of the partition plates, the number of the partition plates is the same as the number of the cable core units, one partition plate corresponds to one cable core unit, and one partition plate is arranged between two adjacent cable core units.

[0012] Furthermore, each of the cable core units includes a cable core and an inner insulating layer, and the inner insulating layer is wrapped around the outside of the cable core.

[0013] Furthermore, there are four cable core units.

[0014] Furthermore, the inner heat absorption layer and the outer heat absorption layer are both made of inorganic heat absorption material, and the water absorption layer is made of fiber cotton material.

[0015] The beneficial effects of the utility model are as follows: the high-strength waterproof power cable provided by the utility model is provided with an inner heat absorption layer, a water absorption layer and an outer heat absorption layer; the inner heat absorption layer can absorb the heat emitted from the inner heat absorption layer, thereby preventing the cable core unit from causing a fire due to excessive heat, thereby protecting the cable core unit; the outer heat absorption layer can absorb the heat outside the outer heat absorption layer; because the water absorption layer is arranged between the inner heat absorption layer and the outer heat absorption layer, after the water absorption layer absorbs a certain amount of water, the inner heat absorption layer and the outer heat absorption layer can heat and absorb the water in the water absorption layer, thereby drying the water absorption layer, restoring the water absorption effect of the water absorption layer, and effectively improving the waterproof performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of the high-strength waterproof power cable of the utility model.

[0018] The names and numbers of the parts in the figure are: 1. cable core unit; 10. separator; 100. central axis; 101. core rod; 102. separator; 103. sleeve; 11. cable core; 12. inner insulation layer; 2. outer insulation layer; 3. armor layer; 4. hydrophobic layer; 5. inner heat absorption layer; 6. water absorption layer; 7. outer heat absorption layer; 8. flame retardant layer; 9. outer sheath; 91. reinforcement ribs; 92. protrusions. DETAILED DESCRIPTION

[0019] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0020] See also Figure 1 The utility model provides a high-strength waterproof power cable, which includes a cable core unit 1, an outer insulating layer 2, an inner heat absorption layer 5, a water absorption layer 6, an outer heat absorption layer 7 and an outer sheath 9. The cable core unit 1 has multiple, the outer insulating layer 2 is wrapped on the outside of the multiple cable core units 1, the inner heat absorption layer 5 is arranged on the outside of the outer insulating layer 2, so that the heat emitted from the inner heat absorption layer 5 can be absorbed, thereby preventing the cable core unit 1 from causing a fire due to excessive heat, thereby protecting the cable core unit 1, the water absorption layer 6 is wrapped on the outside of the inner heat absorption layer 5, and the outer heat absorption layer 7 is wrapped on the outside of the water absorption layer 6, thereby absorbing the heat outside the outer heat absorption layer 7, and the outer sheath 9 is arranged on the outside of the outer heat absorption layer 7.

[0021] Furthermore, a dehumidification film (not shown) is provided on one side of the inner heat absorption layer 5 and the outer heat absorption layer 7 close to the water absorption layer 6. The dehumidification film is made of an activated carbon film. Since the water absorption layer 6 is provided between the inner heat absorption layer 5 and the outer heat absorption layer 7, after the water absorption layer 6 absorbs a certain amount of water, the inner heat absorption layer 5 and the outer heat absorption layer 7 can heat and absorb the water in the water absorption layer 6, thereby drying the water absorption layer 6.

[0022] The outer protective layer 9 is provided with reinforcing ribs 91 inside, and there are multiple reinforcing ribs 91. The multiple reinforcing ribs 91 are evenly arranged at equal angles inside the outer protective layer 9. The outer protective layer 9 is also provided with protrusions 92 outside, and there are multiple protrusions 92. The multiple protrusions 92 are evenly arranged at equal angles on the outer protective layer 9. A reinforcing rib 91 is arranged between two adjacent protrusions 92. The reinforcing rib 91 is provided to compensate for the compressive resistance of the position between two adjacent protrusions 92.

[0023] Furthermore, the number of the reinforcing ribs 91 is the same as the number of the protrusions 92, and one reinforcing rib 91 corresponds to one protrusion 92. In this embodiment, there are twenty reinforcing ribs 91 and twenty protrusions 92.

[0024] In this embodiment, the inner heat absorption layer 5 and the outer heat absorption layer 7 are both made of inorganic heat absorption material, and the inorganic heat absorption material is graphene, which can absorb heat; the water absorption layer 6 is made of fiber cotton material, so that it can absorb water and moisture entering the cable, avoid water and moisture from affecting the use of the cable core unit 1, and improve the waterproof and moisture-proof effect of the cable; the outer sheath 9 is made of chloroprene rubber material, and chloroprene rubber has high strength, good durability, excellent wear resistance, flame retardancy, light resistance, ozone resistance and atmospheric aging resistance, and good elasticity, impact and vibration resistance.

[0025] Each cable core unit 1 includes a cable core 11 and an inner insulating layer 12, wherein the inner insulating layer 12 is wrapped around the outside of the cable core 11. In this embodiment, there are four cable core units 1.

[0026] A separator 10 is also provided between the multiple cable core units 1 and the outer insulating layer 2. The separator 10 includes a core rod 101, a separator plate 102 and a sleeve 103. The core rod 101 is provided in the middle of the multiple cable core units 1, so as to play a role in center positioning for the multiple cable core units 1. A central axis 100 is provided inside the core rod 101, and the central axis 100 is composed of iron wire, so as to increase the strength of the cable. The sleeve 103 is wrapped around the outside of the multiple cable core units 1, and the outer insulating layer 2 is wrapped around the outside of the sleeve 103. The separator plate 102 is provided between the core rod 101 and the sleeve 103. Specifically, one end of the separator plate 102 is fixedly connected to the core rod 101, and the other end of the separator plate 102 is fixedly connected to the sleeve 103. There are multiple separator plates 102, and the number of separator plates 102 is the same as the number of cable core units 1. One separator plate 102 corresponds to one cable core unit 1, and one separator plate 102 is provided between two adjacent cable core units 1. In this embodiment, there are four partition plates 102 .

[0027] Furthermore, the outer insulating layer 2 and the inner heat absorbing layer 5 are further provided with an armor layer 3 and a hydrophobic layer 4, the armor layer 3 is wrapped outside the outer insulating layer 2, the inner heat absorbing layer 5 is wrapped outside the hydrophobic layer 4, and the water absorbing layer 6 is wrapped outside the inner heat absorbing layer 5. In this embodiment, the armor layer 3 is formed by twisting flat steel wires, and when the cable is subjected to external pressure, the pressure passes through the armor layer 3, and the armor layer 3 can further increase the compression resistance of the cable; the hydrophobic layer 4 is made of polypropylene material, and the polypropylene has good hydrophobic properties, which can further increase the waterproof performance of the cable.

[0028] Furthermore, a flame retardant layer 8 is provided between the outer heat absorption layer 7 and the outer sheath 9, the flame retardant layer 8 is wrapped around the outer heat absorption layer 7, and the outer sheath 9 is wrapped around the outer flame retardant layer 8. In this embodiment, the flame retardant layer 8 is made of low-smoke halogen-free flame retardant material, which has the characteristics of environmental protection, flame retardancy, good flexibility, excellent smoke production rate during combustion, and low total smoke production, which effectively improves the fire resistance of the cable.

[0029] The high-strength waterproof power cable provided by the utility model is provided with an inner heat absorption layer 5, a water absorption layer 6 and an outer heat absorption layer 7. The inner heat absorption layer 5 can absorb the heat emitted from the inner heat absorption layer 5, thereby preventing the cable core unit 1 from causing a fire due to excessive heat, thereby protecting the cable core unit 1; the outer heat absorption layer 7 can absorb the heat outside the outer heat absorption layer 7, and the outer sheath 9 is arranged on the outside of the outer heat absorption layer 7; because the water absorption layer 6 is arranged between the inner heat absorption layer 5 and the outer heat absorption layer 7, after the water absorption layer 6 absorbs a certain amount of water, the inner heat absorption layer 5 and the outer heat absorption layer 7 can heat and absorb the water in the water absorption layer 6, thereby drying the water absorption layer 6, restoring the water absorption effect of the water absorption layer 6, and effectively improving the waterproof performance of the cable.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A high-strength waterproof power cable, characterized in that: The high-strength waterproof power cable comprises a plurality of cable core units, an outer insulating layer, an inner heat absorbing layer, a water absorbing layer, an outer heat absorbing layer and an outer sheath, wherein the outer insulating layer is wrapped around the outside of the plurality of cable core units, the inner heat absorbing layer is arranged outside the outer insulating layer, the water absorbing layer is wrapped around the outside of the inner heat absorbing layer, the outer heat absorbing layer is wrapped around the outside of the water absorbing layer, a dehumidification film is arranged on one side of the inner heat absorbing layer and the outer heat absorbing layer close to the water absorbing layer, the outer sheath is arranged outside the outer heat absorbing layer, a plurality of reinforcing ribs are arranged inside the outer sheath, the plurality of reinforcing ribs are arranged at uniform and equal angles inside the outer sheath, a plurality of protrusions are also convexly provided on the outside of the outer sheath, the plurality of protrusions are arranged at uniform and equal angles on the outer sheath, and one reinforcing rib is arranged between two adjacent protrusions.

2. The high-strength waterproof power cable according to claim 1, characterized in that: The outer insulating layer and the inner heat absorbing layer are further provided with an armor layer and a hydrophobic layer. The armor layer is wrapped around the outside of the outer insulating layer, and the inner heat absorbing layer is wrapped around the outside of the hydrophobic layer.

3. The high-strength waterproof power cable according to claim 1, characterized in that: A flame retardant layer is further arranged between the outer heat absorption layer and the outer protective layer. The flame retardant layer is wrapped around the outside of the outer heat absorption layer, and the outer protective layer is wrapped around the outside of the flame retardant layer.

4. The high-strength waterproof power cable according to claim 1, characterized in that: The number of the reinforcing ribs is the same as the number of the protrusions, and one reinforcing rib corresponds to one protrusion.

5. The high-strength waterproof power cable according to claim 1, characterized in that: A partition is also arranged between the multiple cable core units and the outer insulation layer, and the partition includes a core rod, a partition plate and a sleeve. The core rod is arranged in the middle position of the multiple cable core units, a central axis is arranged inside the core rod, the sleeve is wrapped around the outside of the multiple cable core units, the outer insulation layer is wrapped around the outside of the sleeve, and the partition plate is arranged between the core rod and the sleeve.

6. The high-strength waterproof power cable according to claim 5, characterized in that: The central axis is made of iron wire.

7. The high-strength waterproof power cable according to claim 5, characterized in that: There are a plurality of the partition plates, the number of the partition plates is the same as the number of the cable core units, one partition plate corresponds to one cable core unit, and one partition plate is arranged between two adjacent cable core units.

8. The high-strength waterproof power cable according to claim 1, characterized in that: Each of the cable core units includes a cable core and an inner insulating layer, and the inner insulating layer is wrapped around the outside of the cable core.

9. The high-strength waterproof power cable according to claim 8, characterized in that: The number of the cable core units is four.

10. The high-strength waterproof power cable according to claim 1, characterized in that: The inner heat absorption layer and the outer heat absorption layer are both made of inorganic heat absorption material, and the water absorption layer is made of fiber cotton material.

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