Cold-resistant environment-friendly cable

Abstract

The utility model relates to a cold-resistant environment-friendly cable which comprises a conductor, an insulating layer is arranged on the outer side of the conductor, the conductor and the insulating layer form a cable, a plurality of cables are hinged to form a cable core, the cable core is sequentially provided with a filling layer, a wrapping layer, a heat preservation layer, a wear-resistant layer and a sheath from inside to outside, and the heat preservation performance is improved through the structure formed by the insulating layer, the heat preservation layer and the sheath. And no toxin is generated after the cable is burnt.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a cold-resistant and environmentally friendly cable. Background Art

[0002] Wires and cables are products used to transmit electrical energy or magnetic energy or realize electromagnetic energy conversion. In cold environments, the cable sheath becomes hard and brittle, which makes it easy to break and crack, thereby reducing the service life of the cable. Therefore, in order to cope with cold environments, cold-resistant cables are born on the market. Please refer to the publication number CN114141412 A, which is an extreme cold-resistant cable made of irradiated cross-linked polyolefin.

[0003] The inventors discovered that existing cold-resistant and environmentally friendly cables have the following technical problems:

[0004] Existing cross-linked polyolefin extreme cold-resistant cables are only provided with a cross-linked polyolefin layer on the outside of the waterproof layer, while the other layers of the cable are mostly made of vinyl chloride. For example, the inner layer in direct contact with the core is set as a vinyl chloride layer, which generates large internal heat, has average high temperature resistance, and has poor flame retardant properties. When the cable heats up, it will cause the vinyl chloride layer to burn. The vinyl chloride material burns quickly and will produce excessive droplets during the process, which can easily cause the fire to spread faster. At the same time, polyvinyl chloride contains halogens. If a fire occurs, the product has poor flame retardant effect and will release toxic gases. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a cold-resistant and environmentally friendly cable.

[0006] To achieve the above-mentioned objectives, one or more embodiments of the present invention provide the following technical solutions: a cold-resistant and environmentally friendly cable, comprising a conductor, an insulating layer arranged on the outside of the conductor, the conductor and the insulating layer forming a cable, multiple cables being twisted into a core, and the core being provided with an anti-wear layer, a wrapping layer, a filling layer, an insulation layer and a sheath from the inside to the outside.

[0007] It is further configured that the insulation layer and the sheath are both configured in an extruded form.

[0008] It is further configured that the insulating layer is radiation cross-linked halogen-free low-smoke flame-retardant polyolefin.

[0009] It is further configured that the sheath is made of radiation cross-linked halogen-free, low-smoke, flame-retardant polyolefin.

[0010] It is further configured that the conductor is a copper conductor.

[0011] It is further configured that the conductor is a single copper wire or a stranded conductor.

[0012] It is further configured that the anti-wear layer includes radiation cross-linked halogen-free low-smoke flame-retardant polyolefin.

[0013] It is further configured that the wrapping layer is a flame retardant tape.

[0014] It is further configured that the filling layer is a low-smoke, halogen-free, flame-retardant filling rope.

[0015] It is further configured that the thermal insulation layer is polyurethane.

[0016] One or more of the above technical solutions have the following beneficial effects:

[0017] The insulation layer in direct contact with the core is irradiated cross-linked halogen-free, low-smoke, flame-retardant polyolefin. When the core generates high temperature, it will not affect the insulation layer. At the same time, the anti-wear layer and sheath are arranged on the outside of the insulation layer, which are both irradiated cross-linked halogen-free, low-smoke, flame-retardant polyolefin, providing multi-layer protection for the cable. This cable has high requirements for low smoke, halogen-free, and preventing the spread of flames. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Reference numerals:

[0021] 1 conductor; 2 insulation layer; 3 filling layer; 4 wrapping layer; 5 insulation layer; 6 anti-wear layer; 7 sheath; 8 cable; 9 core. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0024] In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] The overall idea proposed by this utility model is Figure 1 A cold-resistant and environmentally friendly cable includes a conductor 1, an insulating layer 2 is arranged on the outside of the conductor 1, the conductor 1 and the insulating layer 2 form a cable 8, multiple cables 8 are twisted into a core 9, and the core 9 is provided with an anti-wear layer 6, a wrapping layer 4, a filling layer 3, an insulation layer 5 and a sheath 7 from the inside to the outside.

[0026] The insulating layer 2 and the sheath 7 are both set in the form of extrusion. Extrusion is a commonly used cable processing method for thickening the insulating layer of wires and cables to improve their pressure resistance and ensure the safety performance of wires and cables. The insulating layer 2 adopts the existing irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin material, and the sheath 7 adopts the existing irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin material. The cable sheath 7 is extruded by an extrusion die, and the screw is a low-smoke halogen-free flame-retardant screw. The compression ratio is controlled at 1.1-1.2. The cable sheath 7 adopts a large-line 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin material. The cable sheath 7 also uses a ground nano-electron accelerator for beam cross-linking, and the cross-linking dose is controlled at 10MARD-14MARD.

[0027] The insulation layer 2 adopts a small wire 125℃ irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin material. In order to meet the product requirement, the insulation thickness is increased to 0.7mm or above. The extrusion method adopts the existing extrusion die extrusion. After the cable insulation layer 2 is extruded, a ground nano-electron accelerator is used for beam cross-linking. The cross-linking dose is controlled at 13MARD-15MARD, so that the molecular structure of the insulation performance is changed from wire-bound to mesh-like. After cross-linking, the product is spark tested to ensure the safety performance of the product. The irradiation cross-linked halogen-free low-smoke flame-retardant polyolefin of the insulation layer 2 is an existing material.

[0028] The conductor 1 is a copper conductor 1, the conductor 1 is a single copper wire or a stranded conductor 1, the cable 8 adopts the fifth stranded copper conductor 1, and the cable 8 is a soft copper conductor 1 to ensure the softness of the cable 8 during installation and reduce the installation space.

[0029] The anti-wear layer 6 includes radiation cross-linked halogen-free, low-smoke, flame-retardant polyolefin, which improves the wear resistance of the cable 8. In order to ensure a certain flame retardant performance, the anti-wear layer 6 is arranged on the outside of the insulating layer 2. The flame retardant performance of the cable is improved by multiple layers of polyolefin. The radiation cross-linked halogen-free, low-smoke, flame-retardant polyolefin of the anti-wear layer 6 is an existing material.

[0030] The wrapping layer 4 is a flame retardant tape made of existing plastic low-smoke halogen-free flame retardant material. By wrapping the flame retardant tape around the outside of the filling layer 3, the wire is made cylindrical to prevent the wire from loosening; it insulates the cable insulation or inner sheath layer, and cooperates with the further anti-wear layer to further improve the overall flame retardant effect of the cable layer.

[0031] The filling layer 3 may use the existing low-smoke halogen-free flame-retardant filling rope. The use of the filling rope can ensure that the appearance and structure of the cable are more regular and meet specific shape requirements. The filling rope can improve the durability and service life of the cable.

[0032] In order to improve the overall thermal insulation performance of the cold-resistant and environmentally friendly cable, the thermal insulation layer 5 is made of polyurethane, which has a good thermal insulation effect.

[0033] The cable processing process is as follows:

[0034] The product is a whole conductor 1 formed by twisting a single conductor 1, the whole conductor 1 is insulated by extrusion die, and then cross-linked by nano electron accelerator. After cross-linking, the insulation of cable 8 needs to be spark tested, and the cable 8 is twisted into a cable core. The product cable core is extruded into a sheath 7 by extrusion die, and the sheath 7 is cross-linked by nano electron accelerator. After cross-linking, the product is printed and tested, and finally this cold-resistant and environmentally friendly cable is formed. The radiation cross-linking process of the radiation cross-linked halogen-free, low-smoke, flame-retardant polyolefin is an existing process, and the polyolefin material produced is an existing material, and the halogen-free, low-smoke, flame-retardant performance of the polyolefin material is achieved.

[0035] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A cold-resistant and environmentally friendly cable, characterized in that: The conductor comprises an insulating layer provided on the outside of the conductor, the conductor and the insulating layer form a cable, a plurality of cables are twisted into a core, and the core is provided with a filling layer, a wrapping layer, a thermal insulation layer, an anti-wear layer and a sheath in sequence from the inside to the outside; The sheath is made of radiation cross-linked halogen-free low-smoke flame-retardant polyolefin; The anti-wear layer is made of radiation cross-linked halogen-free, low-smoke, flame-retardant polyolefin.

2. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The insulating layer and the sheath are both provided in an extruded form.

3. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The insulating layer is made of radiation cross-linked halogen-free, low-smoke, flame-retardant polyolefin.

4. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The conductor is a copper conductor.

5. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The conductor is a single copper wire or a stranded conductor.

6. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The wrapping layer is a flame retardant tape.

7. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The filling layer is low-smoke halogen-free flame-retardant filling rope.

8. The cold-resistant and environmentally friendly cable according to claim 1, characterized in that: The thermal insulation layer is polyurethane.

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