Tensile cable structure

Abstract

The utility model provides a tensile cable structure, and aims to solve the problem that a conventional cable structure cannot bear large mechanical tension. The cable mainly comprises a cable core, the cable core comprises a plurality of soft copper conductors which are mutually twisted and an aramid fiber middle bundle which is filled in the middle of the soft copper conductors, an insulating layer is wrapped outside the cable core, and a stretching layer is wrapped outside the insulating layer. According to the technical scheme of the cable structure provided by the utility model, the middle bundle of aramid fibers and the external stretching layer of double-layer co-extruded aramid fibers are adopted, so that the tensile strength of the cable is higher, the toughness is better, and the cable can be safely applied to working conditions of repeated movement, bending, winding and flexural stretching.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a tensile-resistant cable structure. Background Art

[0002] Traditional energy storage system cable technology usually uses stranded soft copper conductors, extruded polyvinyl chloride or irradiated cross-linked polyolefin insulation, and finished product inspection after irradiation with an electron accelerator. Cables with this structure do not have the ability to withstand large mechanical tension. When the cable needs to withstand a certain tension during use, it can cause the cable conductor to be thinned, causing the cable current carrying capacity to exceed the standard; in severe cases, it can lead to system operation failures and even cause the energy storage system to catch fire or explode, posing a great safety risk. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the present application provides a tensile cable structure, which adopts a middle bundle of aramid fiber and a double-layer co-extruded aramid fiber tensile layer. The cable has higher tensile strength and better toughness, and can be safely used in working conditions of repeated movement, bending, winding, flexure and stretching.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A tensile cable structure comprises a cable core, wherein the cable core comprises a plurality of mutually twisted soft copper conductors and an aramid fiber bundle filled in the middle of the soft copper conductors, the outside of the cable core is wrapped with an insulating layer, and the outside of the insulating layer is wrapped with a tensile layer.

[0006] Furthermore, the stretching layer is made of aramid fiber, and the stretching layer is formed by weaving aramid fiber.

[0007] Furthermore, a sheath is provided outside the stretch layer, and the sheath and the stretch layer are formed by double-layer extrusion.

[0008] Furthermore, the insulating layer is made of polyvinyl chloride.

[0009] The beneficial effects of the utility model are as follows:

[0010] Compared with the prior art, the utility model adopts high-strength aramid fibers twisted into strands and filled in the middle position of the soft copper stranded conductor. The aramid fiber bundle has good tensile resistance and high flexibility, thereby ensuring that the conductor has good mechanical strength and easy bending properties, and can be safely used in working conditions of repeated movement, bending, winding and flexural stretching.

[0011] Compared with the prior art, the utility model adopts high-strength aramid fiber to weave a protective layer on the surface of the cable insulation, which can increase the cable's anti-pulling ability and protect the cable's plastic sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cable cross section of the utility model.

[0013] Among them: 1. Soft copper conductor; 2. Aramid fiber bundle; 3. Insulation layer; 4. Tensile layer. DETAILED DESCRIPTION

[0014] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0015] The utility model provides a tensile-resistant cable structure, aiming to solve the problem that the traditional cable structure is not capable of bearing a large mechanical tensile force.

[0016] Specifically, Figure 1 As shown, it includes a cable core, which includes a plurality of soft copper conductors 1 twisted together and an aramid fiber bundle 2 filled in the middle of the soft copper conductor 1. The outside of the cable core is wrapped with an insulating layer 3, and the outside of the insulating layer 3 is wrapped with a tensile layer 4. The tensile layer 4 is made of aramid fiber and is woven from aramid fibers.

[0017] In some embodiments, a sheath is further provided outside the stretch layer 4, and the sheath and the stretch layer 4 are formed by double-layer extrusion. Wherein, the insulating layer 3 is made of polyvinyl chloride.

[0018] Through the above technical solution, the aramid fiber stretching layer 4 and the outer sheath layer are formed by double-layer co-extrusion and formed in one step, which further enhances the overall tensile strength and toughness of the cable and protects the cable sheath.

[0019] The working principle of this utility model:

[0020] The cable conductor obtained by the above structural scheme has a DC resistance that meets the requirements of GB / T 3956-2008 standard, an acid gas content of no more than 0.5%, a fluorine content of no more than 0.1%, a pH value of ≥4.3, and a conductivity of ≤10μs / mm, meeting the requirements of acid and alkali resistance test. When in use, compared with the traditional cable structure, due to the use of the aramid fiber middle bundle and the external double-layer co-extruded aramid fiber tensile layer 4, the cable has higher tensile strength and better toughness. Compared with the same specifications, the tensile strength is 40-60% higher than that of traditional products; and the product is light in weight, 20-35% lighter than traditional cables, and can be safely used in working conditions of repeated movement, bending, winding, flexing and stretching.

[0021] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A tensile cable structure, characterized in that: The cable core comprises a cable core, wherein the cable core comprises a plurality of mutually twisted soft copper conductors (1) and an aramid fiber bundle (2) filled in the middle of the soft copper conductors (1); the outside of the cable core is wrapped with an insulating layer (3); the outside of the insulating layer (3) is wrapped with a tensile layer (4).

2. A tensile cable structure according to claim 1, characterized in that: The stretching layer (4) is made of aramid fiber material, and the stretching layer (4) is formed by weaving aramid fibers.

3. A tensile cable structure according to claim 1, characterized in that: A protective sheath is also provided outside the stretch layer (4), and the protective sheath and the stretch layer (4) are formed by double-layer extrusion.

4. A tensile cable structure according to claim 1, characterized in that: The insulating layer (3) is made of polyvinyl chloride.

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