Wire cable with magnetic field shielding function

Abstract

The utility model relates to a wire cable with a magnetic field shielding function, which is characterized by comprising a wire core, an insulating layer arranged outside the wire core, a shielding layer arranged outside the insulating layer, a filling layer arranged outside the shielding layer, an inner sheath arranged outside the filling layer, and a concave-convex elastic layer arranged outside the inner sheath. And an outer sheath is arranged on the outer side of the concave-convex elastic layer. The cable has the advantages that the service life of the cable can be effectively prolonged, and the safety and durability of the cable can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire and cable manufacturing, in particular to a wire and cable with a magnetic field shielding function. Background Art

[0002] The manufacturing process of wires and cables is an ancient yet modern technology. Since the application of electric energy in the 19th century, the manufacturing process of wires and cables has been continuously developing and improving to meet the growing demand for power transmission and information communication. This article will conduct an in-depth discussion on the background, significance, production process and precautions of the manufacturing process of wires and cables. The manufacturing process of wires and cables is of great significance in improving product quality, reducing costs, and creating brand value. First of all, the exquisite manufacturing process can improve the conductivity and insulation properties of wires and cables, and ensure the quality and service life of the products.

[0003] Patent No. CN202022976704.6 discloses a cable head insulation glue reinforced cable, including a cable branch head, a wire core is connected to the top of the cable branch head, and the outside of the wire core is wrapped with insulating tape, the outside of the insulating tape is wrapped with asphalt insulating glue, and the outside of the asphalt insulating glue is connected to a sealing tube, the top of the sealing tube is connected to a terminal, and the bottom of the terminal is internally connected to the wire core, a limited separation terminal is installed on the outside of the sealing tube, and the bottom of the sealing tube is externally connected to a connecting cover, and the outside of the connecting cover is embedded with a sealing lower cover, and the sealing lower cover is located on the outside of the cable branch head. The cable head insulation glue reinforced cable can perform multiple insulation protection on the wire core in the sealing tube, improve the insulation effect, reinforce the insulation glue position of the cable head, and improve the insulation performance of the cable head, but the device has the following problems: first, the cable cannot withstand external pressure, and the internal wire core is easily damaged by pressure; second, the cable does not have sufficient function of shielding the magnetic field. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art. By setting a concave-convex elastic layer, the technical problem that the cable cannot withstand external pressure and the internal core is easily damaged by pressure is solved. By setting a metal shielding layer with metal wires woven into a mesh and overlapping each other, the technical problem that the cable has insufficient magnetic field shielding function is solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A wire and cable with a magnetic field shielding function, characterized in that it includes a wire core, an insulating layer is provided on the outside of the wire core, a shielding layer is provided on the outside of the insulating layer, a filling layer is provided on the outside of the shielding layer, an inner sheath is provided on the outside of the filling layer, a concave-convex elastic layer is provided on the outside of the inner sheath, and an outer sheath is provided on the outside of the concave-convex elastic layer.

[0007] As a preference, a conductor shielding layer is provided on the innermost side of the shielding layer, an insulating shielding layer is provided on the outer side of the conductor shielding layer, and a metal shielding layer is provided on the outer side of the insulating shielding layer.

[0008] As a preference, the metal shielding layer is a mesh woven from metal wires which overlap each other and is provided with two layers.

[0009] As a preference, a polyurethane elastomer is provided on the outer side of the concave-convex elastic layer, a groove is provided on the right side of the polyurethane elastomer, a polyurethane elastomer is provided on the right side of the groove, and the polyurethane elastomer and the groove are staggered with each other.

[0010] As a preference, a moisture absorbing pad layer is provided on the inner side of the inner sheath.

[0011] Beneficial effects of the utility model:

[0012] (1) In the utility model, by providing a concave-convex elastic layer, when the cable is subjected to external pressure, the pressure damage to the internal wire core caused by the external force can be reduced. The polyurethane elastomer has very high tensile strength and low temperature resistance. When subjected to external pressure, it can use its own high-strength tensile properties to rebound the external force and protect the internal wire core. In cold weather, it will not harden due to the temperature and become unable to rebound. It has high stability. At the same time, the interlaced shape of the polyurethane elastomer and the grooves increases its compressive strength and bearing capacity, effectively increasing the service life of the cable.

[0013] (2) In the utility model, the foamed polyethylene material of the filling layer is provided to effectively absorb the vibration and impact inside the cable, thereby increasing the mechanical strength of the cable. At the same time, the thermal conductivity of the foamed polyethylene is relatively low, which can effectively reduce the internal temperature of the cable and increase the safety and durability of the cable during use.

[0014] (3) In the present invention, a metal shielding layer is provided to shield the electromagnetic field. The metal wires are woven into a mesh and overlapped with each other to make the metal wires closer together. At the same time, because two layers are provided, the function of shielding the electromagnetic field can be enhanced. Because the current passing through the power cable is relatively large, a magnetic field will be generated around the current. The metal shielding layer can shield this electromagnetic field inside the cable. At the same time, the metal wire can play a grounding protection role. If the cable core wire is damaged, the leaked current can flow into the grounding network along the metal wire of the metal shielding layer, thereby playing a safety protection role.

[0015] In summary, the cable has the advantages of effectively increasing the service life, safety and durability of the cable, and is particularly suitable for the field of wire and cable manufacturing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the concave-convex elastic layer structure in the utility model.

[0019] Figure 3 This is a schematic diagram of the shielding layer structure in the utility model. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0021] Embodiment 1

[0022] like Figures 1 to 3 As shown, the utility model provides an electric wire and cable with a magnetic field shielding function, characterized in that it includes a wire core 1, an insulating layer 2 is provided on the outside of the wire core 1, a shielding layer 3 is provided on the outside of the insulating layer 2, a filling layer 4 is provided on the outside of the shielding layer 3, an inner sheath 5 is provided on the outside of the filling layer 4, a concave-convex elastic layer 6 is provided on the outside of the inner sheath 5, and an outer sheath 7 is provided on the outside of the concave-convex elastic layer 6.

[0023] Furthermore, a conductor shielding layer 31 is provided on the innermost side of the shielding layer 3 to improve the protection of the cable, an insulating shielding layer 32 is provided on the outer side of the conductor shielding layer 31 to protect the internal conductor of the cable, and a metal shielding layer 33 is provided on the outer side of the insulating shielding layer 32 to prevent the generation of electromagnetic interference.

[0024] Furthermore, the metal shielding layer 33 is a mesh woven from metal wires that overlap each other, making the metal wires closer together, and is provided with two layers to enhance the function of shielding the electromagnetic field.

[0025] Furthermore, a polyurethane elastomer 61 is disposed on the outer side of the concave-convex elastic layer 6, a groove 62 is disposed on the right side of the polyurethane elastomer 61, and a polyurethane elastomer 61 is disposed on the right side of the groove 62. The polyurethane elastomer 61 and the groove 62 are staggered with each other to increase the compressive strength and bearing capacity.

[0026] Furthermore, the filling layer 4 is made of foamed polyethylene material, which increases the mechanical strength of the cable. At the same time, the thermal conductivity of foamed polyethylene is relatively low, which can effectively reduce the internal temperature of the cable and increase the safety and durability of the cable during use.

[0027] Furthermore, a moisture-absorbing cushion layer is provided on the inner side of the inner sheath 5, which can effectively prevent the generation of internal moisture and increase the durability of the cable.

[0028] Working process: First, when the cable is in normal use, the conductor shielding layer 31 outside the core 1 improves the protection of the cable, the insulating shielding layer 32 outside the conductor shielding layer 31 protects the internal core 1 of the cable, and the metal shielding layer 33 outside the insulating shielding layer 32 can prevent the generation of electromagnetic interference. At the same time, because the metal wires are woven into a mesh and overlap each other, the metal wires are closer together. At the same time, because two layers are provided, the function of shielding the electromagnetic field can be enhanced. Because the current passing through the power cable is relatively large, a magnetic field will be generated around the current. The metal shielding layer 33 can shield this electromagnetic field in the cable. At the same time, the metal wire can play a grounding protection role. If the cable core wire is damaged, the leaked current can flow into the grounding network along the metal wire of the metal shielding layer, which plays a role in safety protection. At the same time, because the filling layer 4 outside the shielding layer 3 is a foamed polyethylene material, it can effectively absorb the vibration and impact inside the cable and increase the mechanical strength of the cable. At the same time, the thermal conductivity of the foamed polyethylene is relatively low, which can effectively reduce the internal temperature of the cable and increase the safety and durability of the cable when in use.

[0029] Secondly, when the cable is subjected to external pressure, the polyurethane elastomer 61 on the outside of the concave-convex elastic layer 6 has very high tensile strength and low-temperature resistance. When receiving external pressure, it can use its own high-strength tensile properties to rebound the external force and protect the internal wire core 1. It will not harden due to the temperature and become unable to rebound in cold weather. It has high stability. At the same time, the interlaced shape of the polyurethane elastomer 61 and the groove 62 increases its compressive strength and carrying capacity, effectively increasing the service life of the cable.

[0030] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0031] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0032] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A wire and cable with magnetic field shielding function, characterized in that: The invention comprises a wire core (1), an insulating layer (2) is provided on the outer side of the wire core (1), a shielding layer (3) is provided on the outer side of the insulating layer (2), a filling layer (4) is provided on the outer side of the shielding layer (3), an inner sheath (5) is provided on the outer side of the filling layer (4), a concave-convex elastic layer (6) is provided on the outer side of the inner sheath (5), and an outer sheath (7) is provided on the outer side of the concave-convex elastic layer (6); A conductor shielding layer (31) is provided on the innermost side of the shielding layer (3), an insulating shielding layer (32) is provided on the outer side of the conductor shielding layer (31), and a metal shielding layer (33) is provided on the outer side of the insulating shielding layer (32).

2. The wire and cable having a magnetic field shielding function according to claim 1, characterized in that: The metal shielding layer (33) is a mesh of metal wires woven into an overlapping pattern, and is provided with two layers.

3. The wire and cable having a magnetic field shielding function according to claim 1, characterized in that: A polyurethane elastomer (61) is provided on the outer side of the concavo-convex elastic layer (6), a groove (62) is provided on the right side of the polyurethane elastomer (61), a polyurethane elastomer (61) is provided on the right side of the groove (62), and the polyurethane elastomer (61) and the groove (62) are interlaced with each other.

4. The wire and cable having a magnetic field shielding function according to claim 1, characterized in that: The filling layer (4) is made of foamed polyethylene material.

5. The wire and cable having a magnetic field shielding function according to claim 1, characterized in that: A moisture absorbing cushion layer is provided on the inner side of the inner protective sheath (5).

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