High-strength bend-resistant energy storage cable

Abstract

The utility model relates to a kind of high-strength bending-resistant energy storage cables, including several wire core groups and being successively coated in several wire core groups outside from inside to outside wrapping layer, armour layer and outer sheath layer, every the wire core group includes two wire cores, the wire core group outside is coated with bending-resistant sleeve, the bending-resistant sleeve includes the protective sleeve coated in the wire core outside and the connecting portion connected between two protective sleeves.The main purpose of the utility model is to provide a kind of high-strength bending-resistant energy storage cable, which has significant bending resistance and compression resistance, and can be used for cable laying and use in complex environments.

Description

Technical Field

[0001] This utility model relates to a cable, and more particularly to a high-strength, bend-resistant energy storage cable. Background Technology

[0002] Energy storage cables are cables used for transferring and distributing power in new energy power generation systems such as solar, wind, geothermal, and hydropower, playing a crucial role in signal and power transmission. In practical applications, high bending resistance is required for these cables. In the prior art, Chinese patent CN217361180U discloses a cable comprising a cable body and an outer sheath. The cable body includes a conductor and a tensile rope arranged side-by-side. The conductor includes conductor wires and tensile wires mixed and arranged side-by-side. The outer sheath wraps around the outside of the cable body. While this technical solution improves the cable's tensile strength through the design of the tensile rope, it does not devise an effective structure to improve the cable's bending resistance. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a high-strength, bend-resistant energy storage cable with significant bending and compressive strength, which is suitable for cable laying and use in complex environments.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] A high-strength, bend-resistant energy storage cable includes several core groups and a wrapping layer, an armor layer, and an outer sheath layer that are sequentially wrapped around the outside of the core groups from the inside out. Each core group includes two cores. The outside of the core group is covered by an anti-bending sleeve. The anti-bending sleeve includes a protective sleeve covering the outside of the cores and a connecting part connecting the two protective sleeves.

[0006] Furthermore, both ends of the connecting part are fixedly connected to the two protective sleeves respectively, and the center line of the connecting part is located on the center line connecting two cores in the same core group.

[0007] Furthermore, at least one cavity is provided within the connecting portion.

[0008] Furthermore, several of the core groups are supported by a support frame, which includes a column and several fins spaced apart along the circumference of the column. The core groups are evenly distributed along the circumference of the column. The number of fins is the same as the number of core groups. The fins are located between two adjacent core groups. One end of the fin is fixedly connected to the column, and the other end is fixedly connected to a hollow sleeve.

[0009] Furthermore, the hollow sleeve is covered with tensile-resistant filaments.

[0010] Furthermore, a waterproof layer and a flame-retardant layer are sequentially wrapped between the armor layer and the outer sheath layer from the inside out.

[0011] Furthermore, the outer sheath layer is coated with a polyurethane varnish that has anti-corrosion properties.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By covering the outside of the wire core with an anti-bending sleeve, the structural strength of the wire core is greatly improved, thereby improving its bending resistance and also having a certain degree of compression resistance. Combined with the support frame, it can greatly improve the bending resistance and compression resistance of the cable and extend the service life of the cable. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a high-strength, bend-resistant energy storage cable according to the present invention;

[0014] Among them, 1. outer sheath layer; 2. flame retardant layer; 3. waterproof layer; 4. armor layer; 5. wrapping layer; 6. wire core; 7. bending sleeve; 71. protective sleeve; 72. connecting part; 721. cavity; 8. support frame; 81. column; 82. fin; 83. hollow sleeve; 9. filling layer; 10. tensile wire. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] It should be noted that in the description of the technical solution of this utility model, some directional terms used to clearly describe the technical features of this utility model, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", and "outer", are all in accordance with the orientation of the accompanying drawings of this utility model.

[0017] Example

[0018] like Figure 1As shown, this embodiment of a high-strength, bend-resistant energy storage cable includes several core groups and, from the inside out, a wrapping layer 5, an armor layer 4, and an outer sheath layer 1 sequentially covering the outside of the core groups. Each core group includes two cores 6. The core group is covered by an anti-bending sleeve 7. The anti-bending sleeve 7 includes a protective sleeve 71 covering the outside of the core 6 and a connecting portion 72 connecting the two protective sleeves 71. The two ends of the connecting portion 72 are fixedly connected to the two protective sleeves 71 respectively. The center line of the connecting portion 72 is located on the line connecting the centers of the two cores 6 within the same core group. At least one cavity 721 is formed within the connecting portion 72. The number of cavities 721 is determined by the cross-sectional length of the connecting portion 72. When the number of cavities 721 is greater than or equal to two, the distance between two adjacent cavities 721 is greater than 1 mm. In this embodiment, the protective sleeve 71 and the connecting portion 72 are integrally formed, and both the protective sleeve 71 and the connecting portion 72 are made of flame-retardant, high-tear-resistance silicone rubber. This structural design connects two wire cores 6 together via a bending-resistant sleeve 7, forming a stronger overall structure with improved bending resistance. A cavity 721 is machined within the connecting portion 72 to provide sufficient deformation space, mitigating compressive and bending forces during compression or bending.

[0019] Several core groups are supported by a support frame 8, which extends along the axial direction of the core 6. The support frame 8 includes a column 81 and several fins 82 spaced apart circumferentially along the column 81. The core groups are evenly distributed circumferentially along the column 81, and the number of fins 82 is the same as the number of core groups. The fins 82 are located between two adjacent core groups, with one end of each fin fixed to the column 81 and the other end fixed to a hollow sleeve 83. Specifically, in this embodiment, there are three core groups and three fins 82. The column 81 has a cylindrical structure, and the fins 82 have a sheet-like structure. The hollow sleeve 83 has a cylindrical structure, and its outer diameter is larger than the thickness of the fins 82. The support frame 8 is made of thermoplastic polyurethane elastomer, which has excellent comprehensive properties such as high strength, high toughness, wear resistance, and oil resistance. This structural design not only improves the overall structural strength of the cable, but also enhances its compressive and bending resistance due to the material properties; it also serves to separate the core groups and prevent them from squeezing each other.

[0020] The hollow sleeve 83 is covered with tensile filament 10. The tensile filament 10 is made of Kevlar fiber twisted with glass fiber. Kevlar fiber itself has extremely high strength, and its tensile modulus is three times that of steel wire. It has good mechanical properties and can greatly improve the tensile performance of the cable.

[0021] The wrapping layer 5 is made of polyethylene tape. The armor layer 4 is made of copper wire braid and aramid braid, with the aramid braid located outside the copper wire braid. The outer sheath layer 1 is made of low-smoke halogen-free cross-linked polyethylene material. A waterproof layer 3 and a flame-retardant layer 2 are sequentially wrapped between the armor layer 4 and the outer sheath layer 1 from the inside out. The flame-retardant layer 2 is made of modified flame-retardant polypropylene material. The waterproof layer 3 is made of acrylic waterproof material. A filler layer is also provided inside the wrapping layer 5, which is filled between the core 6 and the inner wall of the wrapping layer 5; this filler layer is a nylon filler layer.

[0022] The outer sheath layer 1 is coated with a polyurethane varnish that provides corrosion protection. The polyurethane varnish has excellent chemical resistance, oil resistance, abrasion resistance, and adhesion, preventing corrosion damage to the cable after prolonged use.

[0023] This utility model discloses a high-strength, bend-resistant energy storage cable. By covering the outside of the core assembly with an anti-bending sleeve 7, the structural strength of the core 6 is greatly improved, thereby enhancing its bending resistance and providing a certain degree of compression resistance. Combined with the support frame 8, it can greatly improve the cable's bending and compression resistance, extending the cable's service life.

[0024] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A high strength, bend-tolerant energy storage cable, characterized by: The cable comprises a plurality of core groups, a wrapping layer (5), an armor layer (4) and an outer sheath layer (1) which are sequentially wrapped outside the core groups from inside to outside, each of the core groups comprises two cores (6), an anti-bending sleeve (7) is wrapped outside the core groups, the anti-bending sleeve (7) comprises a protective sleeve (71) wrapped outside the core (6) and a connecting portion (72) connected between the two protective sleeves (71).

2. A high strength, bend-tolerant energy storage cable according to claim 1, characterized in that: The connecting portion (72) is fixedly connected with the two protective sleeves (71) at both ends, and the center line of the connecting portion (72) is located on the center line of the two cores (6) in the same core group.

3. A high strength, bend-tolerant energy storage cable according to claim 2, wherein: At least one cavity (721) is arranged in the connecting portion (72).

4. The high strength, bend-tolerant energy storage cable of claim 1, wherein: The plurality of core groups are supported by a support framework (8), the support framework (8) comprises a column (81) and a plurality of fins (82) which are distributed along the circumference of the column (81) at intervals, the plurality of core groups are uniformly distributed along the circumference of the column (81), the number of the plurality of fins (82) is the same as that of the plurality of core groups, the fins (82) are located between adjacent two core groups, one end of the fin (82) is fixedly connected with the column (81), and the other end is fixedly connected with a hollow sleeve (83).

5. A high strength, bend-tolerant energy storage cable according to claim 4, wherein: The hollow sleeve (83) is wrapped with a tensile wire (10) inside.

6. The high strength, bend-tolerant energy storage cable of claim 1, wherein: The armor layer (4) and the outer sheath layer (1) are sequentially wrapped with a waterproof layer (3) and a flame-retardant layer (2) from inside to outside.

7. The high strength, bend-tolerant energy storage cable of claim 1, wherein: The outer sheath layer (1) is coated with a polyurethane paint having a corrosion-resistant effect outside. ​

Images