Moistureproof cable

Abstract

The utility model relates to the technical field of cables, and discloses a moisture-proof cable which comprises a cable core, the cable core is formed by twisting a plurality of wires, the outer side of the cable core is sequentially wrapped with an inner insulating layer, a moisture-proof layer, a reinforcing layer and an outer sheath, the inner insulating layer wraps the outer wall of the cable core, the moisture-proof layer wraps the outer wall of the inner insulating layer, and the reinforcing layer wraps the outer wall of the outer sheath. According to the utility model, through the arrangement of the moisture-proof layer made of the high-molecular water-absorbent resin, moisture entering the cable can be effectively absorbed, the damage of the moisture to the cable core and the inner insulating layer is prevented, the moisture-proof capability of the cable is improved, and the service life of the cable is prolonged.

Description

Technical Field

[0001] This application relates to the field of cable technology, and in particular to a moisture-proof cable. Background Technology

[0002] A cable is a device for transmitting electrical energy or signals, typically composed of several or groups of conductors. In many applications, cables need to operate in humid environments, such as underground pipelines and underwater. Existing cables have certain shortcomings in terms of moisture resistance; moisture can easily penetrate the cable's interior, leading to a decline in insulation performance, which in turn affects the cable's normal use, shortens its lifespan, and may even cause safety accidents in severe cases. Therefore, a moisture-proof cable has been proposed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a moisture-proof cable to solve the problem mentioned in the background art of insufficient moisture-proof performance of existing cables, which allows moisture to easily penetrate the cable and affect its normal use and lifespan.

[0004] The moisture-proof cable provided in this application adopts the following technical solution:

[0005] A moisture-proof cable includes a cable core, which is made of multiple stranded wires. The outer side of the cable core is sequentially wrapped with an inner insulation layer, a moisture-proof layer, a reinforcing layer, and an outer sheath. The inner insulation layer covers the outer wall of the cable core, the moisture-proof layer covers the outer wall of the inner insulation layer, the reinforcing layer covers the outer wall of the moisture-proof layer, and the outer sheath covers the outer wall of the reinforcing layer.

[0006] The moisture-proof layer is a superabsorbent polymer layer with a thickness of 0.5-1.5 mm, used to absorb and lock in a large amount of moisture.

[0007] Preferably, the reinforcing layer is a glass fiber woven layer.

[0008] Preferably, the outer sheath is made of polyvinyl chloride material.

[0009] Preferably, the surface of the outer sheath is provided with a plurality of evenly distributed raised stripes, the height of which is 0.3-0.5 mm.

[0010] Preferably, the plurality of raised stripes are distributed in a spiral shape along the outer wall of the circumferential surface of the outer sheath.

[0011] Preferably, the inner insulation layer is a cross-linked polyethylene insulation layer.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. By setting a moisture-proof layer made of superabsorbent polymer resin, the moisture that penetrates the cable can be effectively absorbed, preventing moisture from damaging the cable core and inner insulation layer, improving the cable's moisture resistance and extending its service life.

[0014] 2. The fiberglass braided layer, as a reinforcing layer, greatly improves the cable's tensile and compressive mechanical properties, enabling the cable to work stably in various complex environments and reducing cable failures caused by external forces.

[0015] 3. The raised stripes on the outer sheath increase the surface friction of the cable, facilitating cable laying and installation by construction personnel and improving construction efficiency. Simultaneously, the raised stripes also provide some auxiliary moisture protection, further enhancing the overall moisture resistance of the cable. The inner insulation layer uses cross-linked polyethylene material, providing reliable insulation protection for the cable core and ensuring the normal operation of the cable. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of an embodiment of the application;

[0017] Figure 2 This is an internal sectional view of an embodiment of the application;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Explanation of reference numerals in the attached diagram: 1. Cable core; 2. Inner insulation layer; 3. Moisture-proof layer; 4. Reinforcing layer; 5. Outer sheath; 6. Raised stripes. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0021] This application discloses a moisture-proof cable. (Refer to...) Figure 1-3 A moisture-proof cable includes a cable core 1, which is made of multiple stranded wires. The outer side of the cable core 1 is wrapped with an inner insulation layer 2, a moisture-proof layer 3, a reinforcing layer 4, and an outer sheath 5 in sequence.

[0022] Moisture-proof layer 3 is a super absorbent polymer (SAP) layer with a thickness of 0.5-1.5 mm. SAP has a super absorbent capacity, capable of absorbing and locking in large amounts of moisture, effectively preventing further penetration of moisture into the cable.

[0023] The reinforcing layer 4 is a fiberglass braided layer, which is tightly wrapped around the outside of the moisture-proof layer 3. Fiberglass has high strength and corrosion resistance, which can not only enhance the mechanical strength of the cable and prevent the cable from being damaged by external forces during laying and use, but also play a certain protective role for the moisture-proof layer 3.

[0024] The outer sheath 5 is made of polyvinyl chloride (PVC) material. The surface of the outer sheath 5 is provided with multiple evenly distributed raised stripes 6. The height of the raised stripes is 0.3-0.5mm. The multiple raised stripes 6 are spirally distributed along the outer wall of the circumference of the outer sheath 5. PVC material has good weather resistance, chemical corrosion resistance and electrical insulation. The raised stripes 6 on the surface of the cable can increase the friction of the cable surface, which is convenient for cable laying and installation. On the other hand, in a humid environment, the raised stripes 6 can disrupt the continuity of the water film, reduce the adhesion of water on the cable surface, and further improve the moisture-proof performance.

[0025] The inner insulation layer 2 is a cross-linked polyethylene insulation layer. Cross-linked polyethylene has excellent electrical and heat resistance properties, which can provide reliable insulation protection for the cable core and ensure the safety and stability of the cable during the transmission of electrical energy or signals.

[0026] The implementation principle of a moisture-proof cable in this application embodiment is as follows: multiple conductors are twisted together in a certain twisting method to form a cable core 1. The selection of conductors depends on the specific application scenario and transmission requirements of the cable. For example, for power transmission cables, metal conductors with good conductivity such as copper or aluminum can be selected.

[0027] An inner insulation layer 2 made of cross-linked polyethylene is uniformly wrapped around the outside of the cable core 1 using an extrusion process. The thickness of the cross-linked polyethylene insulation layer is reasonably designed according to parameters such as the voltage level of the cable to ensure that it can provide reliable insulation protection for the cable core.

[0028] A superabsorbent polymer layer is applied to the outside of the inner insulation layer 2 by coating or wrapping, with its thickness controlled within the range of 0.5-1.5mm, to ensure that the moisture-proof layer 3 can fully perform its function of absorbing water and preventing moisture.

[0029] A glass fiber braided layer is tightly woven on the outside of the moisture-proof layer 3 using a braiding process. The braiding density and thickness of the glass fiber braided layer are adjusted according to the mechanical strength requirements of the cable to enhance the mechanical properties of the cable.

[0030] A polyvinyl chloride outer sheath is made on the outside of the reinforcing layer 4 by an extrusion molding process. During the extrusion process, multiple evenly distributed raised stripes 6 are formed on the surface of the polyvinyl chloride outer sheath by a specific mold. The height of the raised stripes 6 is controlled at 0.3-0.5mm. After the above steps, the production of a moisture-proof cable of this utility model is completed.

[0031] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] Finally: 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 spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A moisture-proof cable, comprising a cable core (1), characterized in that: The cable core (1) is made of multiple strands of wires twisted together. The outer side of the cable core (1) is wrapped with an inner insulation layer (2), a moisture-proof layer (3), a reinforcing layer (4) and an outer sheath (5) in sequence. The inner insulation layer (2) covers the outer wall of the cable core (1), the moisture-proof layer (3) covers the outer wall of the inner insulation layer (2), the reinforcing layer (4) covers the outer wall of the moisture-proof layer (3), and the outer sheath (5) covers the outer wall of the reinforcing layer (4). The moisture-proof layer (3) is a superabsorbent polymer layer with a thickness of 0.5-1.5 mm, which is used to absorb and lock in a large amount of moisture.

2. The moisture-proof cable according to claim 1, characterized in that: The reinforcing layer (4) is a glass fiber braided layer.

3. The moisture-proof cable according to claim 1, characterized in that: The outer sheath (5) is made of polyvinyl chloride.

4. A moisture-proof cable according to claim 3, characterized in that: The surface of the outer sheath (5) is provided with a plurality of evenly distributed raised stripes (6), the height of which is 0.3-0.5mm.

5. A moisture-proof cable according to claim 4, characterized in that: The multiple raised stripes (6) are spirally distributed along the outer wall of the circumferential surface of the outer sheath (5).

6. A moisture-proof cable according to claim 1, characterized in that: The inner insulation layer (2) is a cross-linked polyethylene insulation layer.

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