Metal shielding cable

Abstract

The utility model provides a metal shielding cable which comprises a cable core body, a first insulating layer is arranged outside the cable core body, a metal protective sleeve is arranged outside a second insulating layer, and a metal shielding layer is arranged outside an elastic layer. According to the metal shielding cable, the first insulating layer and the second insulating layer are arranged outside the wire core body, and the first insulating layer and the second insulating layer are made of a cross-linked low-smoke halogen-free flame-retardant polyethylene insulating material; the cross-linked low-smoke halogen-free flame-retardant polyethylene insulation has the advantages of heat resistance, insulating property, mechanical property, chemical resistance and the like, so that the cable adopting the cross-linked low-smoke halogen-free flame-retardant polyethylene insulation has the advantages that the long-term working temperature can be increased to 90 DEG C, the bearable instantaneous short-circuit temperature can reach 170-250 DEG C, and when the cable is used in a high-temperature environment, the cable cannot be damaged, and the service life of the cable is prolonged. The cable is not affected by temperature, normal use of the cable is ensured, and the anti-electromagnetic interference and insulating properties of the cable are improved through the first insulating layer and the second insulating layer.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, in particular to a metal shielded cable. Background Art

[0002] In various domestic construction projects, wires and cables used for fixed wiring are widely used. Wires and cables can be used in important projects with environmental protection requirements such as high-end buildings, residences, halls, museums, institutes, subways, tunnels, etc., and can also be used in conjunction with environmentally friendly electronic equipment and household appliances, involving thousands of households. With the rapid development of the national economy, electricity consumption continues to increase, and the application of cables is becoming more and more extensive. With the rapid development of my country's social economy, there are more and more important engineering facilities such as subways, airports, railways, tunnels, and crowded places such as smart communities, large supermarkets, and public places. In order to protect the safety of people's lives and property, the safety performance of power cables has been more and more widely used, but the existing cables have weak anti-electromagnetic interference performance when in use, the insulation strength of the cables is not enough, the cable conductors are often easily damaged, and they are easily subject to physical and chemical damage from the external environment, and cannot be used in high temperature environments. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a metal shielded cable, comprising a wire core body, a first insulating layer is provided on the outside of the wire core body, a second insulating layer is provided on the outside of the first insulating layer, a metal protective sheath is provided on the outside of the second insulating layer, a filling layer is provided between the wire core body and the anti-wear layer, an elastic layer is provided on the outside of the anti-wear layer, a metal shielding layer is provided on the outside of the elastic layer, and a protective sheath is provided on the outside of the metal shielding layer.

[0004] Preferably, the first insulating layer is installed on the outer wall of the wire core body, the second insulating layer is installed on the outer wall of the first insulating layer, and the first insulating layer and the second insulating layer are made of cross-linked low-smoke halogen-free flame-retardant polyethylene insulation.

[0005] Preferably, the metal protective sleeve is installed on the outer wall of the second insulating layer.

[0006] Preferably, the filling layer is arranged between the wire core body and the anti-wear layer, and the filling layer is a polyurethane structural layer.

[0007] Preferably, the elastic layer is wrapped around the outer wall of the anti-wear layer, and the elastic layer is made of rubber material.

[0008] Preferably, the metal shielding layer is wrapped around the outer wall of the elastic layer, the protective cover is wrapped around the outer wall of the metal shielding layer, and the protective cover is made of PVC material. Beneficial Effects

[0009] 1. The metal shielded cable has a first insulating layer and a second insulating layer arranged outside the core body, and the first insulating layer and the second insulating layer are made of cross-linked low-smoke halogen-free flame-retardant polyethylene insulation material. The cross-linked low-smoke halogen-free flame-retardant polyethylene insulation has the advantages of heat resistance and insulation performance, mechanical properties and chemical resistance. The cable with cross-linked low-smoke halogen-free flame-retardant polyethylene insulation can increase the long-term working temperature to 90°C and withstand an instantaneous short-circuit temperature of 170-250°C. When the cable is used in a high temperature environment, it will not be affected by the temperature, ensuring the normal use of the cable, thereby improving the anti-electromagnetic interference and insulation performance of the cable through the first insulating layer and the second insulating layer.

[0010] 2. The metal shielded cable, through the arrangement of the metal protective sleeve, the metal shielding layer and the protective sleeve, is arranged on the outside of the first insulating layer, the second insulating layer and the core body, so that the metal protective sleeve effectively protects the first insulating layer, the second insulating layer and the core body, and prevents the first insulating layer, the second insulating layer and the core body from physical and chemical damage by the external environment. At the same time, the metal protective sleeve can effectively shield external electromagnetic signals and reduce the possibility of the cable being interfered with. The metal shielding layer strengthens the shielding effect of the cable, and the protective sleeve prevents the cable from being exposed to harmful substances and causing corrosion. The coordinated use of the metal protective sleeve, the metal shielding layer and the protective sleeve can enhance the safety and reliability of the cable, so that the cable will not be affected by external interference when in use, greatly improving the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the metal shielded cable of the utility model;

[0013] Figure 2 This is a front structural diagram of the metal shielded cable of the utility model;

[0014] Figure 3 This is a left-side structural schematic diagram of the metal shielded cable of the utility model.

[0015] In the figure: 1. wire core body; 2. first insulating layer; 3. second insulating layer; 4. metal protective sleeve; 5. filling layer; 6. anti-wear layer; 7. elastic layer; 8. metal shielding layer; 9. protective sleeve. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0017] The accompanying drawings in the embodiments of the present invention: different types of section lines in the drawings are not marked according to national standards, nor do they impose any requirements on the materials of the components. Instead, they are used to distinguish the cross-sectional views of the components in the drawings.

[0018] See also Figure 1-3 A metal shielded cable comprises a wire core body 1, a first insulating layer 2 is provided on the outside of the wire core body 1, a second insulating layer 3 is provided on the outside of the first insulating layer 2, a metal protective sheath 4 is provided on the outside of the second insulating layer 3, a filling layer 5 is provided between the wire core body 1 and the anti-wear layer 6, an elastic layer 7 is provided on the outside of the anti-wear layer 6, a metal shielding layer 8 is provided on the outside of the elastic layer 7, and a protective sheath 9 is provided on the outside of the metal shielding layer 8.

[0019] The first insulating layer 2 is installed on the outer wall of the core body 1, and the second insulating layer 3 is installed on the outer wall of the first insulating layer 2. The first insulating layer 2 and the second insulating layer 3 are made of cross-linked low-smoke halogen-free flame-retardant polyethylene insulation.

[0020] The metal protective sleeve 4 is installed on the outer wall of the second insulating layer 3 .

[0021] The filling layer 5 is arranged between the wire core body 1 and the anti-wear layer 6, and the filling layer 5 is a polyurethane structural layer.

[0022] The elastic layer 7 is wrapped around the outer wall of the anti-wear layer 6 , and the elastic layer 7 is made of rubber material.

[0023] The metal shielding layer 8 is wrapped around the outer wall of the elastic layer 7 , and the protective cover 9 is wrapped around the outer wall of the metal shielding layer 8 . The protective cover 9 is made of PVC material.

[0024] When in use, the first insulating layer 2 and the second insulating layer 3 are arranged outside the core body 1, and the first insulating layer 2 and the second insulating layer 3 are made of cross-linked low-smoke halogen-free flame-retardant polyethylene insulation material. The cross-linked low-smoke halogen-free flame-retardant polyethylene insulation has the advantages of heat resistance and insulation performance, mechanical properties and chemical resistance, so that the long-term working temperature of the cable with cross-linked low-smoke halogen-free flame-retardant polyethylene insulation can be increased to 90°C, and the instantaneous short-circuit temperature that can be withstood can reach 170-250°C. When the cable is used in a high temperature environment, it will not be affected by the temperature, ensuring the normal use of the cable, and achieving the goal of improving the anti-electromagnetic interference and insulation performance of the cable through the first insulating layer 2 and the second insulating layer 3, and through the arrangement of the metal protective sheath 4, the metal shielding layer 8 and the protective sheath 9, through The metal protective sleeve 4 is arranged outside the first insulating layer 2, the second insulating layer 3 and the core body 1, so that the metal protective sleeve 4 effectively protects the first insulating layer 2, the second insulating layer 3 and the core body 1, and prevents the first insulating layer 2, the second insulating layer 3 and the core body 1 from being physically and chemically damaged by the external environment. At the same time, the metal protective sleeve 4 can effectively shield external electromagnetic signals and reduce the possibility of interference with the cable. The metal shielding layer 8 strengthens the shielding effect of the cable, and the protective sleeve 9 prevents the cable from being exposed to harmful substances and causing corrosion. The coordinated use of the metal protective sleeve 4, the metal shielding layer 8 and the protective sleeve 9 can enhance the safety and reliability of the cable, so that the cable will not be affected by external interference when in use, thereby greatly improving the service life of the cable.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A metal shielded cable, comprising a core body (1), characterized in that: A first insulating layer (2) is provided outside the wire core body (1), a second insulating layer (3) is provided outside the first insulating layer (2), a metal protective sleeve (4) is provided outside the second insulating layer (3), a filling layer (5) is provided between the wire core body (1) and the anti-wear layer (6), an elastic layer (7) is provided outside the anti-wear layer (6), a metal shielding layer (8) is provided outside the elastic layer (7), and a protective sleeve (9) is provided outside the metal shielding layer (8).

2. A metal shielded cable according to claim 1, characterized in that: The first insulating layer (2) is installed on the outer wall of the wire core body (1), and the second insulating layer (3) is installed on the outer wall of the first insulating layer (2). The first insulating layer (2) and the second insulating layer (3) are made of cross-linked low-smoke halogen-free flame-retardant polyethylene insulation.

3. A metal shielded cable according to claim 1, characterized in that: The metal protective sleeve (4) is installed on the outer wall of the second insulating layer (3).

4. A metal shielded cable according to claim 1, characterized in that: The filling layer (5) is arranged between the wire core body (1) and the anti-wear layer (6), and the filling layer (5) is a polyurethane structural layer.

5. The metal shielded cable according to claim 1, characterized in that: The elastic layer (7) is wrapped around the outer wall of the anti-wear layer (6), and the elastic layer (7) is made of rubber material.

6. The metal shielded cable according to claim 1, characterized in that: The metal shielding layer (8) is wrapped around the outer wall of the elastic layer (7), and the protective sleeve (9) is wrapped around the outer wall of the metal shielding layer (8), and the protective sleeve (9) is made of PVC material.

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