Wire cable with moisture-proof function

Abstract

The utility model discloses a wire cable with a moisture-proof function. The wire cable is characterized by comprising a conductor, an insulating layer, a moisture-proof layer, a heat conduction layer, a shunting layer, a waterproof breathable layer and a sheath layer from inside to outside in sequence. The moisture-proof layer comprises a water absorption expansion layer and a honeycomb moisture absorption layer and can rapidly absorb moisture. The heat conduction layer is a metal mesh and conducts heat of the conductor to the shunting layer to evaporate moisture. The diversion layer is made of a polyethylene composite material, and a rough diversion surface promotes water dispersion and evaporation. And the waterproof breathable layer adopts a waterproof breathable film, so that one-way escape of water vapor and liquid blocking are realized. The sheath layer is provided with a silica gel protection layer with a micropore structure and a waterproof breathable film wrapped outside the silica gel protection layer. The structure effectively prevents moisture penetration, protects the insulating layer and the conductor, and improves the service life and performance of the cable.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically to a wire and cable with moisture-proof function. Background Technology

[0002] As a crucial supporting industry for the national economy, the power cable industry is experiencing rapid growth in demand for wires and cables due to the continuous expansion of China's power industry, data communication industry, urban rail transit industry, automotive industry, and manufacturing industry. Power cables, used for transmitting and distributing electrical energy, are widely used in various fields and are an indispensable transmission medium in both industrial and civil applications. With technological advancements and market changes, the demand for wires and cables is also growing rapidly.

[0003] Electric wires and cables generally consist of an inner metal conductor, a middle insulation layer, and an outer sheath. Although the sheath has a certain waterproof function, moisture can still penetrate into the cable through capillary action or seep into the cable in a long-term humid environment. At the same time, the existing insulation layer is generally made of polyvinyl chloride, which is prone to moisture absorption and becomes damp after long-term use, especially cables in kitchens, bathrooms, or buried in the ground. Moisture in the insulation layer will lead to a decrease in insulation resistance, affecting the performance of the product, and will also easily cause conductor corrosion, reducing the service life of the cable. Utility Model Content

[0004] This invention proposes a moisture-proof wire and cable, which solves the problem in related technologies that moisture can easily penetrate into the cable in humid environments, thereby corroding the insulation layer and conductor and affecting the service life of the cable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a moisture-proof wire and cable, comprising a conductor, an insulation layer, and a sheath layer arranged from the inside out. Between the insulation layer and the sheath layer, a moisture-proof layer, a heat-conducting layer, a current-distributing layer, and a waterproof and breathable layer are arranged sequentially from the inside out. The heat-conducting layer is used to conduct heat from the conductor to the current-distributing layer to evaporate moisture from the current-distributing layer. The waterproof and breathable layer is used to allow water vapor evaporated inside to escape in one direction and to prevent external liquids from penetrating inward.

[0006] The present invention is further configured such that the moisture-proof layer includes a water-absorbing and expanding layer, and a moisture-absorbing layer is embedded on the side of the water-absorbing and expanding layer facing the heat-conducting layer. The moisture-absorbing layer has a honeycomb structure and a plurality of spaced holes and grooves are provided on its upper surface.

[0007] The present invention is further configured such that the heat-conducting layer is a metal mesh covering the moisture-proof layer, and the metal mesh is attached to the inner side of the diversion layer.

[0008] The present invention is further configured such that the diversion layer is made of polyethylene composite material, including a waterproof layer covering the outside of the heat-conducting layer, and the side of the waterproof layer facing the waterproof and breathable layer is provided with a rough diversion surface.

[0009] The present invention is further configured such that the waterproof and breathable layer is a waterproof and breathable membrane, and the waterproof and breathable membrane is wrapped around the outer surface of the diversion layer.

[0010] The present invention is further configured such that a thermally conductive filler is provided in the pores of the moisture-absorbing layer, and the thermally conductive filler is attached to the thermally conductive layer.

[0011] The present invention is further configured such that the diversion surface includes a plurality of protrusions disposed on the outer surface of the waterproof layer, and the plurality of protrusions form interconnected grooves on the surface of the waterproof layer.

[0012] The present invention is further configured such that the protrusion is prismatic.

[0013] The present invention is further configured such that the sheath layer includes a silicone protective layer with a plurality of microporous structures wrapped around the waterproof and breathable layer, and the silicone protective layer is wrapped with a waterproof and breathable membrane.

[0014] The present invention is further configured such that the thermally conductive filler is graphene particles.

[0015] In summary, the beneficial effects of this utility model are as follows:

[0016] Compared with the prior art, this application provides a moisture-proof layer, a heat-conducting layer, a diversion layer and a waterproof and breathable layer in sequence from the inside to the outside between the insulation layer and the sheath layer; wherein, the water-absorbing expansion layer and the honeycomb-structured moisture-absorbing layer in the moisture-proof layer can quickly absorb the moisture that penetrates through the sheath layer, reducing the erosion of the internal conductor and insulation layer by moisture.

[0017] The pores and grooves above the moisture-absorbing layer and the thermally conductive filler inside, which are in contact with the thermally conductive layer, help to guide the heat generated by the conductor to the thermally conductive layer, thereby achieving heat dissipation for the conductor and the insulation layer. Furthermore, by absorbing heat, the thermally conductive layer can also heat the moisture on the distribution layer to accelerate the evaporation of moisture on the distribution layer and reduce moisture penetration, thus providing all-round protection for the insulation layer and the conductor. Attached Figure Description

[0018] Figure 1 This is a perspective view of this application.

[0019] Figure 2 This is a cross-sectional view of this application.

[0020] Figure 3 This is the exploded view of this application.

[0021] Figure 4 yes Figure 3 Enlarged view of point A.

[0022] Reference numerals: 1. Conductor; 2. Insulating layer; 3. Sheath layer; 4. Moisture-proof layer; 41. Water-absorbing and expanding layer; 42. Moisture-absorbing layer; 43. Groove; 5. Thermally conductive layer; 6. Diversion layer; 61. Waterproof layer; 62. Diversion surface; 63. Protrusion; 64. Groove; 7. Waterproof and breathable layer; 8. Waterproof and breathable membrane; 9. Thermally conductive filler. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of this utility model.

[0024] like Figure 1-4 As shown, this embodiment discloses a moisture-proof wire and cable, including a conductor 1, an insulation layer 2, and a sheath layer 3 arranged from the inside out. Between the insulation layer 2 and the sheath layer 3, from the inside out, are sequentially arranged a moisture-proof layer 4, a heat-conducting layer 5, a current-dissipating layer 6, and a waterproof and breathable layer 7. The water-absorbing expansion layer 41 and the honeycomb-structured moisture-absorbing layer 42 in the moisture-proof layer 4 can quickly absorb moisture that permeates through the sheath layer 3, reducing the erosion of the internal conductor 1 and insulation layer 2 by moisture.

[0025] The grooves 43 above the moisture-absorbing layer 42 and the thermally conductive filler 9 inside are in contact with the thermally conductive layer 5, which helps to guide the heat generated by the conductor 1 to the thermally conductive layer 5, thereby achieving heat dissipation for the conductor 1 and the insulation layer 2. Furthermore, by absorbing heat, the thermally conductive layer 5 can also heat the moisture on the distribution layer 6 to accelerate the evaporation of moisture on the distribution layer 6 and reduce moisture penetration, thereby providing all-round protection for the insulation layer 2 and the conductor 1.

[0026] Specifically, such as Figure 4 As shown, the moisture-proof layer 4 includes a water-absorbing expansion layer 41. A moisture-absorbing layer 42 is embedded on the side of the water-absorbing expansion layer 41 facing the heat-conducting layer 5. The moisture-absorbing layer 42 has a honeycomb structure and several spaced holes 43 are provided on its top. The water-absorbing expansion layer 41 is a water-expanding strip made of water-expanding material. When moisture penetrates through the cable into the moisture-proof layer 4, the water-absorbing expansion layer 41 will expand rapidly after absorbing the moisture, thereby filling the gaps in the cable and preventing moisture from spreading to and contacting the insulation layer 2, thus enhancing the barrier effect against moisture.

[0027] Meanwhile, an absorbent layer 42 is embedded on the outside of the water-absorbing expansion layer 41. The absorbent layer 42 is made of a composite material of polyurethane foam and water-absorbing gel, which can effectively absorb and fix moisture, thereby preventing further diffusion of moisture. The polyurethane foam has good isolation properties and can block moisture and prevent moisture penetration, thereby effectively improving the service life of wires and cables in high humidity environments.

[0028] In the above structure, since polyurethane material has good thermal insulation properties, it is difficult to achieve rapid heat conduction. Therefore, in this embodiment, the moisture-absorbing layer 42 is set as a honeycomb structure, so that the heat of conductor 1 can be conducted through the holes 43 between the honeycomb structure after passing through the water-absorbing expansion layer 41.

[0029] Meanwhile, in order to further improve the heat conduction efficiency, graphene particles are set in the groove 43 as thermally conductive filler 9. The thermally conductive filler 9 is attached to the thermally conductive layer 5, which can conduct the heat on the conductor 1 to the outside more quickly and accelerate the heat dissipation between the conductor 1 and the insulating layer 2.

[0030] Furthermore, the heat-conducting layer 5 is a metal mesh covering the moisture-proof layer 4, and the metal mesh is attached to the inner side of the distribution layer 6; such as Figure 4 As shown, the inner side of the metal mesh is bonded to the moisture-proof layer 4 and in contact with the graphene particles, while the other side is bonded to the distribution layer 6. Heat can be conducted to the distribution layer 6 through the metal mesh, thereby heating the distribution layer 6. The distribution layer 6 is made of polyethylene composite material and includes a waterproof layer 61 covering the outside of the heat-conducting layer 5. The side of the waterproof layer 61 facing the waterproof and breathable layer 7 is provided with a rough distribution surface 62. The rough distribution surface 62 allows the water to disperse when the liquid penetrates to the distribution surface 62 of the distribution layer 6, thereby effectively preventing the accumulation of water. At the same time, the dispersed water allows the water in the distribution layer 6 to evaporate faster when heated by the metal mesh, thereby accelerating the drying of the water.

[0031] The metal mesh can be made of aluminum alloy, which has excellent thermal conductivity and high corrosion resistance, thereby improving the heat dissipation efficiency of conductor 1 and extending the product's service life. The distribution layer 6 is made of polyethylene composite material. Since polyethylene has low thermal conductivity, thermally conductive fillers such as graphite powder can be added to the polyethylene to create a composite material, thereby improving the thermal conductivity of the distribution layer 6. This accelerates heat dissipation from conductor 1 and enhances the evaporation of moisture on the distribution surface 62.

[0032] Furthermore, a waterproof and breathable layer 7 is wrapped around the outside of the distribution layer 6. The waterproof and breathable layer 7 is made of a waterproof and breathable membrane 8. Its main function is to allow water vapor on the surface of the distribution layer 6 to escape and to block the penetration of external liquids. While reducing the erosion of the insulation layer 2 and conductor 1 by moisture and improving the waterproof performance, it will not affect the heat dissipation effect of the wires and cables.

[0033] Furthermore, the diversion surface 62 includes a plurality of prismatic protrusions 63 disposed on the outer surface of the waterproof layer 61, and the plurality of protrusions 63 form interconnected grooves 64 on the surface of the waterproof layer 61. Water can be dispersed and flow along the grooves 64, preventing water accumulation, thereby increasing the water diffusion area and improving the water evaporation efficiency.

[0034] Furthermore, on the outermost side of the waterproof and breathable layer 7, a sheath layer 3 is provided to protect the wires and cables. The sheath layer 3 includes a silicone protective layer with a number of microporous structures wrapped around the waterproof and breathable layer 7, and a waterproof and breathable membrane 8 is wrapped around the silicone protective layer. Specifically, the silicone protective layer consists of two layers, an inner fiber braided layer and an outer silicone grease coating layer. In the specific manufacturing process, a special high-temperature organic heat-resistant silicone is coated with high-loft fiber braid and vulcanized at high temperature. It has excellent high-temperature fireproof function and heat insulation effect, as well as special properties such as low weight and low density. The silicone grease has good waterproof sealing, waterproof, solvent resistance and anti-creep properties, does not corrode metals, has oxidation resistance, chemical stability and lubricity, and has good compatibility with rubber. Applying silicone grease can improve the lubrication of the installation process and also improve the insulation performance at the interface of accessories.

[0035] In order to ensure the evaporation of moisture and the dissipation of heat inside the cable, the silicone grease material used is a material with a specific pore structure, or the thickness of the silicone grease coating is controlled so that it is not too dense, thereby ensuring the dissipation of internal water vapor and heat.

[0036] In addition to the above, an extra layer of waterproof and breathable membrane 8 is wrapped around the silicone protective layer to improve the waterproof performance of wires and cables in humid environments.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A moisture-proof wire and cable, comprising a conductor (1), an insulation layer (2), and a sheath layer (3) arranged from the inside out, characterized in that, Between the insulation layer (2) and the sheath layer (3), a moisture-proof layer (4), a heat-conducting layer (5), a diversion layer (6), and a waterproof and breathable layer (7) are arranged sequentially from the inside to the outside. The heat-conducting layer (5) is used to conduct the heat of the conductor (1) to the diversion layer (6) to evaporate the moisture in the diversion layer (6). The waterproof and breathable layer (7) is used to allow the water vapor evaporated inside to escape in one direction and to prevent external liquid from penetrating inward.

2. The electrical wire and cable with moisture-proof function according to claim 1, characterized in that, The moisture-proof layer (4) includes a water-absorbing expansion layer (41), and a moisture-absorbing layer (42) is embedded on the side of the water-absorbing expansion layer (41) facing the heat-conducting layer (5). The moisture-absorbing layer (42) has a honeycomb structure and a number of spaced holes (43) are provided on its top.

3. The electrical wire and cable with moisture-proof function according to claim 1, characterized in that, The heat-conducting layer (5) is a metal mesh covering the moisture-proof layer (4), and the metal mesh is attached to the inner side of the diversion layer (6).

4. A moisture-proof wire and cable according to claim 1, characterized in that, The diversion layer (6) is made of polyethylene composite material and includes a waterproof layer (61) covering the outside of the heat-conducting layer (5). The waterproof layer (61) has a rough diversion surface (62) on the side facing the waterproof and breathable layer (7).

5. A moisture-proof wire and cable according to claim 1, characterized in that, The waterproof and breathable layer (7) is made of a waterproof and breathable membrane (8), which is wrapped around the outer surface of the diversion layer (6).

6. A moisture-proof wire and cable according to claim 2, characterized in that, The moisture-absorbing layer (42) has a thermally conductive filler (9) in its pores (43), and the thermally conductive filler (9) is attached to the thermally conductive layer (5).

7. A moisture-proof wire and cable according to claim 4, characterized in that, The diversion surface (62) includes a plurality of protrusions (63) disposed on the outer surface of the waterproof layer (61), and the plurality of protrusions (63) form interconnected grooves (64) on the surface of the waterproof layer (61).

8. A moisture-proof wire and cable according to claim 7, characterized in that, The protrusion (63) is prismatic.

9. A moisture-proof wire and cable according to claim 1, characterized in that, The sheath layer (3) includes a silicone protective layer with a plurality of microporous structures wrapped around the waterproof and breathable layer (7), and the silicone protective layer is wrapped with a waterproof and breathable membrane (8).

10. A moisture-proof wire and cable according to claim 6, characterized in that, The thermally conductive filler (9) is made of graphene particles.

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