Cold-resistant and low-temperature-resistant wire cable

Abstract

The utility model discloses a cold-resistant and low-temperature-resistant wire cable, which comprises a cable outer sheath, a cable inner sheath is wrapped in the cable outer sheath, a PVC (polyvinyl chloride) resin protective sleeve is wrapped in the cable inner sheath, a cable core is wrapped in the PVC resin protective sleeve, and a cable core is wrapped in the PVC resin protective sleeve. The cable outer sheath is composed of a polypropylene material layer and a polyethylene material layer, and the polyethylene material layer is wrapped with the polypropylene material layer. According to the utility model, the outer sheath of the cable is made of the polypropylene material layer and the polyethylene material layer, so that the cable has good low-temperature resistance, can meet the requirements of general low-temperature environments, can be normally used in cold-resistant weather, and ensures that the internal cable core is not influenced by the low-temperature environments; in addition, the exterior of the cable core is protected by the PVC resin, so that the overall shock resistance of the electric wire and cable can be improved to a certain extent, and the electric wire and cable are not easy to break.

Description

Technical Field

[0001] The utility model relates to the technical field of wire and cable, in particular to a cold-resistant and low-temperature-resistant wire and cable. Background Art

[0002] Wire and cable is a wire product used to transmit electrical (magnetic) energy, information and realize the conversion of electromagnetic energy. In a broad sense, wire and cable is also simply called cable. In a narrow sense, cable refers to insulated cable, which can be defined as a collection composed of the following parts: one or more insulated wire cores, and their respective possible coating layers, total protective layer and outer protective layer. There are a wide variety of wire and cable varieties and specifications, with a wide range of applications. The operating voltage is mostly below 1 kV. Facing special occasions, new products are constantly derived, such as fire-resistant cables, flame-retardant cables, low-smoke halogen-free, low-smoke low-halogen cables, termite-proof and mouse-proof cables, oil-resistant and wear-resistant cables, medical cables, agricultural cables, mining cables, thin-wall wires, etc.

[0003] At present, cables are applied in all walks of life, but the overall cold-resistant and low-temperature-resistant performance of the cables commonly used in the market is not good. In extremely cold weather, the cables are prone to failures, which affects the transmission of internal signals and has a certain impact on people's lives. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cold-resistant and low-temperature-resistant wire and cable, which has the advantages of cold resistance and low temperature resistance.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a cold-resistant and low-temperature-resistant wire and cable, including an outer cable sheath, the inside of the outer cable sheath is wrapped with an inner cable sheath, the inside of the inner cable sheath is wrapped with a PVC resin protective sleeve, the inside of the PVC resin protective sleeve is wrapped with a cable core, the outer cable sheath is composed of a polypropylene material layer and a polyethylene material layer, and the polypropylene material layer is wrapped outside the polyethylene material layer.

[0006] As a preferred solution, the inner cable sheath is composed of an insulating layer and a sheath layer, and the insulating layer is wrapped outside the sheath layer.

[0007] As a preferred solution, a low-temperature halogen-free flame-retardant wire is wrapped inside the polyethylene material layer, and the low-temperature halogen-free flame-retardant wire is woven into a net and distributed outside the inner cable sheath.

[0008] As a preferred solution, there are eight strands of the cable core arranged inside the inner cable sheath and distributed in a ring shape.

[0009] As a preferred solution, an insulating paint is coated on the outside of the outer cable sheath, and a flame-retardant material is wrapped outside the inner cable sheath.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The outer sheath of the cable of the present utility model is made of a polypropylene material layer and a polyethylene material layer, which enables the cable to have good low-temperature resistance, can meet the requirements of general low-temperature environments, and can be used normally in cold-resistant weather, ensuring that the internal cable core will not be affected by the low-temperature environment. In addition, the outside of the cable core is protected by PVC resin, which can improve the overall impact resistance of the wire and cable to a certain extent and is not prone to breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0013] Figure 2 is a schematic structural diagram of the inner sheath of the cable of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the outer sheath of the cable of the present utility model.

[0015] In the figure: 1. Outer sheath of the cable; 2. Inner sheath of the cable; 3. PVC resin protective sleeve; 4. Cable core; 5. Insulation layer; 6. Sheath layer; 7. Polypropylene material layer; 8. Polyethylene material layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0018] Embodiment 1:

[0019] Please refer to Figures 1-3 As shown, the present utility model provides a cold-resistant and low-temperature-resistant wire and cable, including an outer sheath 1 of the cable. The inside of the outer sheath 1 of the cable is wrapped with an inner sheath 2 of the cable. The inside of the inner sheath 2 of the cable is wrapped with a PVC resin protective sleeve 3. The inside of the PVC resin protective sleeve 3 is wrapped with a cable core 4. The outer sheath 1 of the cable is composed of a polypropylene material layer 7 and a polyethylene material layer 8, and the polypropylene material layer 7 is wrapped outside the polyethylene material layer 8.

[0020] The application of the polypropylene material layer 7 and the polyethylene material layer 8 is set in this technical solution. By making the cable outer sheath 1 of the polypropylene material layer 7 and the polyethylene material layer 8, the cable can have good low-temperature resistance, can meet the requirements of general low-temperature environments, and can be used normally in cold-resistant weather, ensuring that the internal cable core 4 will not be affected by the low-temperature environment.

[0021] Embodiment 2:

[0022] On the basis of Embodiment 1, as shown in the present utility model Figure 2 The cable inner sheath 2 is composed of an insulating layer 5 and a sheath layer 6, and the insulating layer 5 is wrapped outside the sheath layer 6.

[0023] Adopting the technical solution as shown in Figure 1 The insulating material can strengthen the overall insulation performance, and the sheath is woven from flame-retardant woven material to ensure that the internal materials are not prone to combustion when encountering fire.

[0024] Secondly, in the technical solution, a low-temperature halogen-free flame-retardant wire is wrapped inside the polyethylene material layer 8, and the low-temperature halogen-free flame-retardant wire is woven into a net shape and distributed outside the cable inner sheath 2; there are eight strands of the cable core 4 arranged inside the cable inner sheath 2 and distributed in a ring shape; an insulating paint is coated on the outside of the cable outer sheath 1, and a flame-retardant material is wrapped outside the cable inner sheath 2.

[0025] Adopting the technical solution as shown in Figure 1 The material inside the low-temperature halogen-free flame-retardant wire is a halogen substance. In the case of combustion, it does not release halogen-containing gases and has a low smoke concentration, while the insulating paint on the outside of the cable outer sheath 1 is a paint with excellent electrical insulation properties, and it has good electrochemical properties, thermal properties, mechanical properties and chemical properties.

[0026] The working principle of the present utility model is that by making the cable outer sheath 1 of the polypropylene material layer 7 and the polyethylene material layer 8, the cable can have good low-temperature resistance, can meet the requirements of general low-temperature environments, and can be used normally in cold-resistant weather, ensuring that the internal cable core 4 will not be affected by the low-temperature environment. In addition, the outside of the cable core 4 is protected by PVC resin, which can improve the overall impact resistance of the wire and cable to a certain extent and is not prone to breakage.

[0027] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various elements, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a particular embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0028] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model or those features that are not relevant to the implementation of the present utility model).

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model may be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A cold-resistant and low-temperature-resistant wire and cable, comprising an outer cable sheath (1), characterized in that: Inside the cable outer sheath (1), there is a cable inner sheath (2) wrapped. Inside the cable inner sheath (2), there is a PVC resin protective sleeve (3) wrapped. Inside the PVC resin protective sleeve (3), there is a cable core (4) wrapped. The cable outer sheath (1) is composed of a polypropylene material layer (7) and a polyethylene material layer (8), and the polypropylene material layer (7) is wrapped outside the polyethylene material layer (8).

2. The cold-resistant and low-temperature-resistant wire and cable according to claim 1, wherein: The cable inner sheath (2) is composed of an insulating layer (5) and a sheath layer (6), and the insulating layer (5) is wrapped outside the sheath layer (6).

3. A cold-resistant and low-temperature-resistant wire and cable according to claim 1, characterized in that: Inside the polyethylene material layer (8), there is a low-temperature halogen-free flame-retardant wire, and the low-temperature halogen-free flame-retardant wire is woven into a net and distributed outside the cable inner sheath (2).

4. The cold-resistant and low-temperature-resistant wire and cable according to claim 1, characterized in that: There are eight strands of the cable core (4) arranged inside the cable inner sheath (2) and distributed in a ring shape.

5. A cold-resistant and low-temperature-resistant wire and cable according to claim 1, characterized in that: The outside of the cable outer sheath (1) is coated with insulating paint, and the outside of the cable inner sheath (2) is wrapped with a flame-retardant material.

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