CN219202798U

CN219202798U - Cable with good electromagnetic shielding performance

Info

Publication number: CN219202798U
Application number: CN202222921043.6U
Authority: CN
Inventors: 何金城; 何秉祐; 高其国
Original assignee: Dongguan Jinyi Wire Technology Co ltd
Current assignee: Dongguan Jinyi Wire Technology Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-06-16
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a cable with good electromagnetic shielding performance, which belongs to the technical field of cables and comprises three conductor cores, wherein conductor shielding layers are nested outside the conductor cores, and insulating layers are nested outside the conductor shielding layers. According to the utility model, the external electromagnetic signals can be shielded by the conductor shielding layer of the rubber of the silane coupling agent modified graphene coating, the interference of external electromagnetic waves on transmission signals is avoided, and the normal operation of a cable is ensured.

Description

Cable with good electromagnetic shielding performance

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a cable with good electromagnetic shielding performance.

Background

The cable is an electric energy or signal transmission device, and is usually composed of several wires or groups of wires, and in order to avoid the interference of external electromagnetic waves in the process of transmitting signals, a protection structure capable of shielding the electromagnetic waves needs to be arranged outside the wires of the cable to ensure the normal operation of the cable, so that the cable with good electromagnetic shielding performance is provided.

The utility model provides a high electromagnetic shielding communication cable, wherein, through retrieving finding, is CN202020914530.8, discloses a high electromagnetic shielding communication cable, including the wire, the cladding of wire outside has the insulating layer, the insulating layer outside is provided with electromagnetic shield layer, electromagnetic shield layer outside cover has the oversheath, electromagnetic shield layer includes first electromagnetic shield net, has the interference that can shield external electromagnetism to the cable, also can shield the electromagnetic influence external world that the cable produced, sets up electromagnetic seal liner layer and can eliminate the non-conductive point, and electromagnetic shield net passes through the crisscross stack of multilayer metal mesh and constitutes, reduces electromagnetic shield net's gap or hole, avoids electromagnetic leakage, reinforcing electromagnetic shield effect.

But it is found through research that: the product does not carry out subregion protection's structure to each cable core, all cable cores extrudees together, heat mutual transfer between each other leads to the whole heat of cable core to increase, influence the life of cable easily, in addition, the device does not have the structure that can increase cable mechanical strength, the cable receives external force influence, be out of shape easily, wearing and tearing, influence cable life, the cable can produce more heat in the use moreover, the heat gathers, cause spontaneous combustion easily, cause incident such as conflagration, therefore provide a novel device and solve this problem.

Disclosure of Invention

The utility model aims at: in order to solve the above-described problems, a cable having good electromagnetic shielding performance is provided.

The technical scheme adopted by the utility model is as follows: the cable with good electromagnetic shielding performance comprises three conductor cores, wherein conductor shielding layers are arranged outside the conductor cores in a nested manner, insulating layers are arranged outside the conductor shielding layers in a nested manner, insulating shielding layers are arranged outside the insulating layers in a nested manner, a metal reinforcing layer A is arranged outside the insulating shielding layers in a nested manner, and a protective layer is arranged outside the metal reinforcing layer A in a nested manner;

the conductor core, the conductor shielding layer, the insulating shielding layer, the metal reinforcing layer A and the protective layer jointly form a cable core;

the protection mechanism capable of protecting the cable core is arranged outside the protection layer.

The protection mechanism comprises a support shell, support plates, a metal reinforcing layer B, a heat insulation layer and a protective sleeve, wherein the support shell is arranged outside the protective layer, the support plates are fixedly arranged inside the support shell, the number of the support plates is three, the three support plates divide the support shell into three quadrants, three cable cores are respectively arranged in the three quadrants, cable filling paste is filled in the three quadrants, the metal reinforcing layer B is sheathed outside the support shell, the heat insulation layer is nested outside the metal reinforcing layer B, and the protective sleeve is nested outside the heat insulation layer.

The conductive shielding layer is made of rubber sprayed with silane coupling agent modified graphene coating, the insulating layer and the insulating shielding layer are made of PET reinforced by glass fibers, the protecting layer is made of PE, and the metal reinforcing layer A is made of galvanized steel strips.

The metal reinforcing layer B is made of plastic-coated steel strips, the heat insulation layer is formed by bonding a polyimide layer and a glass fiber layer, and the protective sleeve is made of halogen-free low-smoke polyolefin.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

1. according to the utility model, the external electromagnetic signals can be shielded by the conductor shielding layer of the rubber of the silane coupling agent modified graphene coating, the interference of external electromagnetic waves on transmission signals is avoided, and the normal operation of a cable is ensured.

2. According to the utility model, the heat insulation layer formed by bonding the polyimide layer and the glass fiber layer through the protection mechanism has the advantages of stable chemical property, high heat resistance, good insulating property, no need of adding flame retardant to prevent combustion, good corrosion resistance and high mechanical strength, and the halogen-free low-smoke polyolefin protective sleeve has higher temperature resistance and scratch resistance, reduces the abrasion probability of the cable, further increases the flame resistance of the cable, increases the abrasion resistance of the cable, avoids spontaneous combustion of the cable, prolongs the service life of the cable, and avoids safety accidents such as fire disasters.

3. According to the utility model, the tensile strength and the mechanical strength of the cable are increased through the metal reinforcing layer A and the metal reinforcing layer B, so that the cable is not easy to deform under the action of external force, and the service life of the cable is further prolonged.

Drawings

FIG. 1 is a schematic illustration of the overall elevation cross-sectional structure of the present utility model;

FIG. 2 is an enlarged schematic view of the cable core according to the present utility model;

FIG. 3 is a schematic illustration of a portion of a three-dimensional structure of the present utility model;

FIG. 4 is a schematic view of a support shell portion in a three-dimensional configuration of the present utility model.

The marks in the figure: 1. a conductor core; 101. a conductor shielding layer; 102. an insulating layer; 1021. an insulating shielding layer; 103. a metal reinforcing layer A; 1031. a protective layer; 2. a support case; 201. a support plate; 202. a metal reinforcing layer B; 2021. a thermal insulation layer; 2022. and (5) a protective sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the utility model, the following components are added:

referring to fig. 1 to 4, a cable with good electromagnetic shielding performance comprises conductor cores 1, the number of the conductor cores 1 is three, conductor shielding layers 101 are nested outside the conductor cores 1, insulating layers 102 are nested outside the conductor shielding layers 101, insulating shielding layers 1021 are nested outside the insulating layers 102, metal reinforcing layers a103 are nested outside the insulating shielding layers 1021, and protective layers 1031 are nested outside the metal reinforcing layers a 103;

and the conductor core 1, the conductor shielding layer 101, the insulating layer 102, the insulating shielding layer 1021, the metal reinforcing layer a103 and the protective layer 1031 together form a cable core;

the protective layer 1031 is provided with a protective mechanism outside, which can protect the cable core.

Referring to fig. 1-3, further, the material of the conductor shielding layer 101 is rubber sprayed with a silane coupling agent modified graphene coating, the material of the insulating layer 102 and the material of the insulating shielding layer 1021 are both PET reinforced by glass fibers, the material of the protective layer 1031 is PE, and the material of the metal reinforcing layer a103 is galvanized steel strip;

the conductor shielding layer 101 made of rubber coated with the silane coupling agent modified graphene coating has good conductivity and electromagnetic shielding property, the influence of an external magnetic field on a cable can be avoided, the thermal deformation temperature of the insulating layer 102 and the insulating shielding layer 1021 made of PET reinforced by glass fibers can reach 225 ℃, the thermal aging resistance of the PET is good, the embrittlement temperature is-70 ℃, the PET still has certain toughness at-30 ℃, the cable damage caused by overhigh temperature of the cable core is avoided, the service life of the cable is prolonged, the tensile strength of the cable core is enhanced by the metal reinforcing layer A103 made of a galvanized steel strip, the protective layer 1031 made of PE has good corrosion resistance and electrical insulation, and the service life of the cable core is ensured while the cable core is protected.

Referring to fig. 1, 3 and 4, further, the protection mechanism comprises a supporting shell 2, a supporting plate 201, a metal reinforcing layer B202, a heat insulation layer 2021 and a protecting sleeve 2022, wherein the supporting shell 2 is arranged outside the protecting layer 1031, the supporting plate 201 is fixedly installed inside the supporting shell 2, the number of the supporting plates 201 is three, the three supporting plates 201 divide the inside of the supporting shell 2 into three quadrants, three cable cores are respectively arranged in the three quadrants, cable filling paste is filled in the three quadrants, the metal reinforcing layer B202 is sheathed outside the supporting shell 2, the heat insulation layer 2021 is nested outside the metal reinforcing layer B202, the protecting sleeve 2022 is nested outside the heat insulation layer 2021, the metal reinforcing layer B202 is made of plastic-coated steel tape, the heat insulation layer 2021 is formed by bonding a polyimide layer and a glass fiber layer, and the protecting sleeve 2022 is made of halogen-free low-smoke polyolefin;

the cable filling paste filled in the support shell 2 has excellent waterproof property, can prevent moisture in air from entering the cable to cause corrosion to the cable, has excellent heat resistance and oxidation resistance stability, avoids cable damage caused by overhigh temperature or contact with external air, the metal reinforcing layer B202 made of plastic-coated steel strips further increases the tensile strength and mechanical strength of the cable, the cable is not easy to deform under the action of external force, the metal reinforcing layer B202 has insulativity, the heat insulation layer 2021 formed by bonding a polyimide layer and a glass fiber layer has the advantages of stable chemical property, high heat resistance, good insulativity, high mechanical strength, high corrosion resistance and high temperature resistance of the halogen-free low-smoke polyolefin protective sleeve 2022 without adding flame retardant, reduces the wear probability of the cable, further increases the flame resistance of the cable, and prolongs the service life of the cable.

Working principle: firstly, the conductor shielding layer 101 made of rubber sprayed with the silane coupling agent modified graphene coating has good conductivity and electromagnetic shielding property, so that the influence of an external magnetic field on a cable can be avoided, then the thermal deformation temperature of the insulating layer 102 and the insulating shielding layer 1021 made of PET reinforced by glass fibers can reach 225 ℃, the thermal aging resistance of the PET is good, the embrittlement temperature is-70 ℃, the PET still has certain toughness at-30 ℃, the cable damage caused by overhigh temperature of the cable core is avoided, the service life of the cable is prolonged, the tensile strength of the cable core is enhanced by the metal reinforcing layer A103 made of galvanized steel strips, the protective layer 1031 made of PE has good corrosion resistance and electrical insulation, the service life of the cable core is ensured while the cable core is protected, and then the cable filling paste filled in the supporting shell 2 has excellent waterproof property, the cable filling paste has excellent heat resistance and oxidation resistance stability, avoids cable damage caused by overhigh temperature or contact with external air, the metal reinforcing layer B202 made of plastic-coated steel strips further increases the tensile strength and mechanical strength of the cable, so that the cable is not easy to deform under the action of external force, the metal reinforcing layer B202 has insulativity, and finally the insulating layer 2021 formed by bonding a polyimide layer and a glass fiber layer has the advantages of stable chemical property, high heat resistance, good insulativity, combustion resistance without adding flame retardant, good corrosion resistance and high mechanical strength, the halogen-free low-smoke polyolefin protective sleeve 2022 has higher temperature resistance and scratch resistance, reduces the probability of cable abrasion, further increases the flame resistance of the cable and simultaneously increases the wear resistance of the cable, the service life of the cable is prolonged.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A cable with good electromagnetic shielding properties, comprising conductor cores (1), the number of conductor cores (1) being three, characterized in that: the novel cable conductor is characterized in that a conductor shielding layer (101) is arranged outside the conductor core (1) in a nested mode, an insulating layer (102) is arranged outside the conductor shielding layer (101) in a nested mode, an insulating shielding layer (1021) is arranged outside the insulating layer (102) in a nested mode, a metal reinforcing layer A (103) is arranged outside the insulating shielding layer (1021) in a nested mode, and a protective layer (1031) is arranged outside the metal reinforcing layer A (103) in a nested mode;

the conductor core (1), the conductor shielding layer (101), the insulating layer (102), the insulating shielding layer (1021), the metal reinforcing layer A (103) and the protective layer (1031) form a cable core together;

the protection layer (1031) is externally provided with a protection mechanism capable of protecting the cable core.

2. A cable having good electromagnetic shielding properties according to claim 1, characterized in that: the protection mechanism comprises a support shell (2), a support plate (201), a metal reinforcing layer B (202), a heat insulation layer (2021) and a protection sleeve (2022);

the protection layer (1031) is outside to have support shell (2), support shell (2) inside fixed mounting has backup pad (201), and backup pad (201) quantity is three, and three backup pad (201) are with support shell (2) internal portion three quadrant, and three cable core is arranged in three quadrant respectively, and all is filled with cable filling paste in the three quadrant, support shell (2) outside armor has metal reinforcement layer B (202), metal reinforcement layer B (202) outside nestification is provided with insulating layer (2021), insulating layer (2021) outside nestification is provided with lag (2022).

3. A cable having good electromagnetic shielding properties according to claim 1, characterized in that: the conductor shielding layer (101) is made of rubber sprayed with a silane coupling agent modified graphene coating.

4. A cable having good electromagnetic shielding properties according to claim 1, characterized in that: the insulating layer (102) and the insulating shielding layer (1021) are made of PET reinforced by glass fibers.

5. A cable having good electromagnetic shielding properties according to claim 1, characterized in that: the protective layer (1031) is made of PE.

6. A cable having good electromagnetic shielding properties according to claim 1, characterized in that: the metal reinforcement layer A (103) is made of galvanized steel strips.

7. A cable having good electromagnetic shielding properties according to claim 2, characterized in that: and the material of the metal reinforcing layer B (202) is plastic-coated steel strip.

8. A cable having good electromagnetic shielding properties according to claim 2, characterized in that: the heat insulating layer (2021) is formed by bonding a polyimide layer and a glass fiber layer.

9. A cable having good electromagnetic shielding properties according to claim 2, characterized in that: the material of the protective sleeve (2022) is halogen-free low-smoke polyolefin.