Moistureproof cable

Abstract

The utility model discloses a moisture-proof cable, and relates to the technical field of sludge treatment. The cable comprises a conductor, an inner insulating layer, a moisture-proof layer, an outer insulating layer and a sheath. The inner insulating layer is tightly wrapped outside the conductor, the moisture-proof layer is uniformly and seamlessly arranged outside the inner insulating layer, the outer insulating layer is completely wrapped outside the moisture-proof layer, and the sheath is tightly attached outside the outer insulating layer. The moisture-proof layer is formed by overlapping three layers of waterproof breathable films, and every two adjacent layers of waterproof breathable films are bonded through a high-performance adhesive. The waterproof breathable film has a unique micropore structure, and the aperture of the micropores is not greater than 0.1 micron, so that water molecules can be effectively prevented from passing through, a small amount of gas generated in the cable is allowed to be discharged, the pressure balance in the cable is kept, and the reduction of the insulating property caused by water vapor accumulation is avoided. Due to the multi-layer stacking design, the damp-proof effect is further enhanced, and even if an individual layer is slightly damaged, other layers can still play a good damp-proof role.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sludge treatment technical field, specifically, especially relates to a damp -proof cable. BACKGROUND

[0002] With the rapid development of modern society, electricity and communication play a vital role in people's daily life and industrial production. As an important carrier of power and signal transmission, the performance and quality of cable directly affect the stability and reliability of the system. In various application scenarios, especially in humid environments such as underground, underwater, rainy areas, etc., cables face the serious challenge of moisture intrusion.

[0003] Moisture intrusion can lead to a decrease in the insulation performance of the cable, increase the resistance, cause faults such as leakage and short circuit, not only affect normal power transmission and communication, but also may bring safety hazards. Traditional cables often have certain limitations in moisture-proof design. Some cables rely only on a single insulating material to block moisture, but these insulating materials may age, crack, etc. after long-term use, thereby losing the moisture-proof effect. In addition, the structural design of some cables is not reasonable enough to form an effective moisture-proof barrier, so that moisture can easily penetrate into the cable.

[0004] In view of the problems in the related art, no effective solution has been proposed so far. CONTENT OF THE UTILITY MODEL

[0005] In view of the problems in the related art, the utility model provides a damp-proof cable to overcome the above technical problems existing in the prior art.

[0006] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0007] The utility model is a kind of damp-proof cable, including conductor, inner insulating layer, moisture-proof layer, outer insulating layer and sheath;The inner insulating layer is tightly wrapped outside the conductor, the moisture-proof layer is evenly and gaplessly arranged outside the inner insulating layer, the outer insulating layer is completely wrapped outside the moisture-proof layer, and the sheath is tightly attached outside the outer insulating layer.

[0008] Further, the conductor is composed of a plurality of twisted copper wires, and each copper wire surface is plated with an oxidation-resistant plating layer.

[0009] Further, the inner insulating layer is made of silicone rubber material, and the thickness is uniform and not less than 2mm.

[0010] Further, the moisture-proof layer is formed by three layers of waterproof and breathable film, the adjacent two layers of waterproof and breathable film are bonded by high-performance adhesive, and the pore size of the waterproof and breathable film is not greater than 0.1 microns.

[0011] Further, the outer insulation layer is made of cross-linked polyethylene material which has been subjected to cross-linking treatment, and the cross-linking degree is not less than 70%, and the thickness of the outer insulation layer is not less than 3mm.

[0012] Further, the sheath is made of chlorinated polyethylene material, and the thickness is not less than 1.5mm, and a layer of anti-ultraviolet coating is uniformly coated on the outer surface of the sheath.

[0013] The utility model has the following beneficial effects: (copy working principle adds beneficial effect)

[0014] 1、The inner insulation layer of the utility model adopts silicon rubber material which has good electrical insulation performance and is resistant to high temperature. Silicon rubber has excellent thermal stability and can maintain its insulation performance unchanged in high temperature environment. At the same time, silicon rubber also has good elasticity and flexibility, can be tightly wrapped on the surface of the conductor, and fill the tiny gap between the conductors, thereby providing reliable electrical insulation. Its uniform thickness is not less than 2mm, which ensures sufficient insulation strength and effectively prevents short circuit and leakage between conductors.

[0015] 2、The moisture-proof layer of the utility model is formed by stacking three layers of waterproof and breathable film, and the adjacent two layers of waterproof and breathable film are bonded by high-performance adhesive. The waterproof and breathable film has a unique microporous structure, and the pore size of the micropores is not greater than 0.1 microns, which can effectively prevent the passage of water molecules, while allowing a small amount of gas generated inside the cable to be discharged, maintaining the pressure balance inside the cable and avoiding the decline of insulation performance due to water vapor accumulation. The multi-layer stacking design further enhances the moisture-proof effect, and even if individual layers are slightly damaged, other layers can still play a good moisture-proof role.

[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0018] Figure 1 The layered structure of the utility model.

[0019] In the drawings, the component list represented by each number is as follows:

[0020] 1, conductor; 2, inner insulation layer; 3, moisture-proof layer; 4, outer insulation layer; 5, sheath. DETAILED DESCRIPTION

[0021] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the utility model.

[0022] In the description of the utility model, it needs to be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated components or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] Please refer to Figure 1 As shown in the drawings, the utility model is a kind of moisture-proof cable, including conductor 1, inner insulating layer 2, moisture-proof layer 3, outer insulating layer 4 and sheath 5;The inner insulating layer 2 is tightly wrapped outside the conductor 1, the moisture-proof layer 3 is evenly and gaplessly arranged outside the inner insulating layer 2, the outer insulating layer 4 is completely wrapped outside the moisture-proof layer 3, and the sheath 5 is tightly attached to the outer insulating layer 4.

[0024] In one embodiment, for the above-mentioned conductor 1, the conductor 1 is composed of multiple strands of twisted copper wires, and each strand of the copper wire surface is plated with an oxidation-resistant plating layer.

[0025] The conductor is the core part of the cable for transmitting electric energy or signal, and adopts multiple strands of fine twisted high-purity copper wires. This design not only increases the flexibility of the conductor, so that it can withstand certain bending and stretching stress, but also reduces the skin effect and improves the conductivity of the conductor through the multiple strands of twisted way. In order to prevent the copper wire from oxidizing in the long-term use process, an oxidation-resistant plating layer is plated on the surface of each strand of copper wire, which effectively prolongs the service life of the conductor.

[0026] In one embodiment, for the above-mentioned inner insulating layer 2, the inner insulating layer 2 is made of silicone rubber material, which is uniform in thickness and not less than 2 millimeters.

[0027] The inner insulating layer is made of silicone rubber material with high temperature resistance and good electrical insulation performance. Silicone rubber has excellent thermal stability and can maintain its insulation performance unchanged in high temperature environment. At the same time, silicone rubber also has good elasticity and flexibility, which can tightly wrap the surface of the conductor and fill the small gaps between the conductors, so as to provide reliable electrical insulation. Its uniform thickness of not less than 2 millimeters ensures sufficient insulation strength, effectively preventing short circuit and leakage between the conductors.

[0028] In one embodiment, for the moisture-proof layer 3 described above, the moisture-proof layer 3 is composed of three layers of waterproof and breathable film, and the adjacent two layers of waterproof and breathable film are bonded by high-performance adhesive. The pore size of the micropores of the waterproof and breathable film is not greater than 0.1 microns.

[0029] The moisture-proof layer 3 is composed of three layers of waterproof and breathable film, and the adjacent two layers of waterproof and breathable film are bonded by high-performance adhesive. The waterproof and breathable film has a unique microporous structure, and the pore size of these micropores is not greater than 0.1 microns, which can effectively prevent the passage of water molecules while allowing a small amount of gas generated inside the cable to be discharged, maintaining the pressure balance inside the cable and avoiding the decline of insulation performance caused by water vapor accumulation. The multi-layer design further enhances the moisture-proof effect, and even if individual layers are slightly damaged, other layers can still play a good moisture-proof role.

[0030] In one embodiment, for the outer insulation layer 4 described above, the outer insulation layer 4 is made of cross-linked polyethylene material after cross-linking treatment, and the cross-linking degree is not less than 70%, and the thickness of the outer insulation layer 4 is not less than 3 millimeters.

[0031] Cross-linking treatment significantly improves the heat resistance, mechanical properties and chemical corrosion resistance of polyethylene. Its cross-linking degree is not less than 70%, which ensures that the outer insulation layer has good electrical insulation performance and moisture-proof performance. The thickness of not less than 3 millimeters provides additional insulation protection for the cable, further enhancing the reliability of the cable in harsh environments.

[0032] In one embodiment, for the sheath 5 described above, the sheath 5 is made of chlorinated polyethylene material, the thickness of which is not less than 1.5 millimeters, and a layer of anti-ultraviolet coating is uniformly coated on the outer surface of the sheath 5.

[0033] The sheath is made of wear-resistant, corrosion-resistant and aging-resistant chlorinated polyethylene material. This material can effectively protect the cable from mechanical damage, chemical corrosion and environmental aging. The thickness of not less than 1.5 millimeters ensures sufficient protection strength. A layer of anti-ultraviolet coating is uniformly coated on the outer surface of the sheath, further improving the weather resistance of the sheath, so that it can maintain good performance in long-term outdoor exposure.

[0034] A kind of manufacturing process of moisture-proof cable, first, fine stranding and plating oxidation-resistant layer treatment are carried out to conductor, ensure the quality and performance of conductor.Then, the silicon rubber is uniformly wrapped in the conductor by extrusion process, form inner insulation layer, and ensure the thickness and uniformity of inner insulation layer meet the requirements.In the manufacturing process of moisture-proof layer, three waterproof and breathable films are accurately bonded by high-performance adhesive, and ensure that the layers are tightly combined, without bubbles and gaps.The outer insulation layer and sheath are also formed by extrusion process, and the temperature, pressure and speed parameters are strictly controlled during extrusion process, to ensure the quality and performance of each layer.

[0035] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, nor limit the utility model to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and describes these embodiments in order to better explain the principles and practical application of the utility model, so that those skilled in the art can well understand and use the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.

Claims

1. A moisture resistant cable, characterized in that, It comprises a conductor (1), an inner insulation layer (2), a moisture-proof layer (3), an outer insulation layer (4) and a sheath (5); the inner insulation layer (2) tightly wraps the conductor (1), the moisture-proof layer (3) is evenly and seamlessly arranged outside the inner insulation layer (2), the outer insulation layer (4) completely wraps the moisture-proof layer (3), and the sheath (5) is tightly and closely arranged outside the outer insulation layer (4). The moisture-proof layer (3) is composed of three layers of waterproof and breathable films, and the adjacent two layers of waterproof and breathable films are bonded by high-performance adhesive, and the pore size of the waterproof and breathable film is not greater than 0.1 microns.

2. A moisture resistant cable according to claim 1, wherein, The conductor (1) is composed of multiple twisted copper wires, and each copper wire is coated with an anti-oxidation plating layer.

3. A moisture resistant cable according to claim 1, wherein The inner insulation layer (2) is made of silicone rubber material, and the thickness is uniform and not less than 2 mm.

4. A moisture resistant cable according to claim 1, wherein The outer insulation layer (4) is made of cross-linked polyethylene material after cross-linking treatment, and the cross-linking degree is not less than 70%, and the thickness of the outer insulation layer (4) is not less than 3 mm.

5. A moisture resistant cable according to claim 4, wherein, The sheath (5) is made of chlorinated polyethylene material, and the thickness is not less than 1.5 mm, and a layer of anti-ultraviolet coating is evenly coated on the outer surface of the sheath (5).

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