Anti-fracture high-voltage power transmission steel-cored aluminum stranded wire

Abstract

The utility model relates to the technical field of copper-cored aluminum stranded wires, in particular to an anti-fracture high-voltage power transmission steel-cored aluminum stranded wire, which comprises a steel core and an aluminum stranded wire, the aluminum stranded wire is wrapped outside the steel core, an inner reinforcing ring structure and an outer reinforcing ring structure are embedded in the middle of the steel core, and the inner reinforcing ring structure and the outer reinforcing ring structure are arranged at intervals inside and outside. The inner reinforcing ring structure comprises a plurality of sets of inner reinforcing ribs annularly distributed in the circumferential direction of the central axis of the steel core, and the outer reinforcing ring structure comprises a plurality of sets of outer reinforcing ribs annularly distributed in the circumferential direction of the central axis of the steel core and arranged on the outer sides of the inner reinforcing ribs. The outer reinforcing ribs and the inner reinforcing ribs are arranged to be of spiral structures, and the spiral direction of the outer reinforcing ribs is opposite to that of the inner reinforcing ribs. The anti-fracture high-voltage power transmission steel-cored aluminum stranded wire is high in strength and anti-fracture coefficient.

Description

Technical Field

[0001] This utility model relates to the field of copper core aluminum stranded wire technology, specifically a high-voltage power transmission steel core aluminum stranded wire that is resistant to breakage. Background Technology

[0002] Copper core aluminum stranded wire is a type of electrical cable where the conductor is aluminum wire, while the connectors or terminals are made of pure copper. This design combines the low cost of aluminum with the excellent conductivity of copper, aiming to reduce the manufacturing cost of electrical cables while maintaining good current transmission performance.

[0003] A search revealed that patent CN216250087U discloses a fracture-resistant high-voltage transmission steel-cored aluminum stranded wire, comprising a steel core and aluminum stranded wires. The steel core has a first reinforcing rib at its center and several sets of second reinforcing ribs along its inner circumference. The outer wall of the steel core is covered with a tensile-resistant layer, which is then covered with an armor layer. A bending-resistant layer is fitted around the outer side of the armor layer, and a connecting layer is wrapped around its outer wall. The connecting layer has external spiral fitting grooves on its outer wall that are adapted to the aluminum stranded wires. The aluminum stranded wires are spirally fitted and connected to the connecting layer through corresponding external spiral fitting grooves. It increases the tensile strength of the steel-cored aluminum stranded wire by setting an anti-tensile layer and an armor layer, and prevents the steel core from breaking by the cooperation of the first and second reinforcing ribs. By setting a bending-resistant layer, the steel-cored aluminum stranded wire can bend when swayed by the wind and return to its original shape after the wind stops, thus preventing the steel-cored aluminum stranded wire from breaking. However, it has one first reinforcing rib in the middle position and several groups of second reinforcing ribs set around the first reinforcing rib. The overall strength of the first and second reinforcing ribs needs to be improved. Therefore, a high-voltage transmission steel-cored aluminum stranded wire with high strength and a high anti-breakage coefficient is designed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-voltage transmission steel-cored aluminum stranded wire with high strength and a high fracture resistance coefficient.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fracture-resistant high-voltage transmission steel-core aluminum stranded wire, comprising a steel core and aluminum stranded wire, wherein the aluminum stranded wire is wrapped around the outside of the steel core, and an inner reinforcing ring structure and an outer reinforcing ring structure are embedded in the middle of the steel core at intervals. The inner reinforcing ring structure includes multiple sets of inner reinforcing ribs distributed circumferentially along the central axis of the steel core, and the outer reinforcing ring structure includes multiple sets of outer reinforcing ribs arranged outside the inner reinforcing ribs distributed circumferentially along the central axis of the steel core. Both the outer and inner reinforcing ribs are configured as spiral structures, and the spiral directions of the outer and inner reinforcing ribs are opposite.

[0008] Preferably, the outer wall of the steel core is wrapped with a tensile-resistant layer.

[0009] Preferably, the tensile layer is covered with an armor layer.

[0010] Preferably, the armor layer is covered with a bending-resistant layer.

[0011] Preferably, the bending-resistant layer is wrapped with a connecting layer, and the outer wall of the connecting layer is provided with an outer spiral interlocking path groove adapted to the aluminum stranded wire, and the aluminum stranded wire is spirally interlocked with the outer spiral interlocking path groove.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a fracture-resistant high-voltage transmission steel-cored aluminum stranded wire, which has the following beneficial effects:

[0014] This fracture-resistant high-voltage transmission steel-cored aluminum stranded wire improves overall strength and fracture resistance by incorporating inner and outer reinforcing ring structures. Furthermore, the overall strength and fracture resistance are further enhanced by multiple sets of outer and inner reinforcing ribs with opposite spiral directions. This fracture-resistant high-voltage transmission steel-cored aluminum stranded wire exhibits high strength and fracture resistance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the present invention from other perspectives;

[0017] Figure 3 This is a schematic diagram of the structure of the inner reinforcing ring and the outer reinforcing ring of this utility model.

[0018] The following are labels in the attached diagram: 1. Steel core; 2. Aluminum stranded wire; 3. Outer reinforcing rib; 4. Inner reinforcing rib; 5. Tensile layer; 6. Armor layer; 7. Bending-resistant layer; 8. Connecting layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example:

[0021] Please see Figure 1-3 A fracture-resistant high-voltage transmission steel-cored aluminum stranded wire includes a steel core 1 and aluminum stranded wire 2. The aluminum stranded wire 2 is wrapped around the outside of the steel core 1. An inner reinforcing ring structure and an outer reinforcing ring structure are embedded in the middle of the steel core 1 at intervals. The inner reinforcing ring structure includes multiple sets of inner reinforcing ribs 4 distributed circumferentially along the central axis of the steel core 1. The outer reinforcing ring structure includes multiple sets of outer reinforcing ribs 3 arranged outside the inner reinforcing ribs 4 and distributed circumferentially along the central axis of the steel core 1. Both the outer reinforcing ribs 3 and the inner reinforcing ribs 4 are set as spiral structures and the spiral directions of the outer reinforcing ribs 3 and the inner reinforcing ribs 4 are opposite.

[0022] Specifically, the outer wall of the steel core 1 is wrapped with a tensile layer 5 to increase its tensile strength.

[0023] Specifically, the tensile layer 5 is wrapped with an armor layer 6, and further, the armor layer 6 is configured as a multi-layer metal armor layer 6.

[0024] Specifically, the armor layer 6 is wrapped with a bending-resistant layer 7, which is configured as a foldable corrugated tube to increase bending resistance.

[0025] Specifically, the bending-resistant layer 7 is wrapped with a connecting layer 8. The outer wall of the connecting layer 8 is provided with an outer spiral interlocking path groove that is compatible with the aluminum stranded wire 2. The aluminum stranded wire 2 is spirally interlocked with the outer spiral interlocking path groove. Furthermore, the connecting layer 8 is made of high-density polyethylene to increase the connection stability.

[0026] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0027] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0028] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A high-voltage power transmission steel-cored aluminum strand that is resistant to breakage, characterized by: The steel core (1) and the aluminum strand (2) are wrapped outside the steel core (1), the middle position of the steel core (1) is embedded with the inner and outer reinforcing ring structures arranged at intervals, the inner reinforcing ring structure includes a plurality of groups of inner reinforcing ribs (4) distributed in a circular ring along the central axis of the steel core (1), the outer reinforcing ring structure includes a plurality of groups of outer reinforcing ribs (3) arranged outside the inner reinforcing ribs (4) and distributed in a circular ring along the central axis of the steel core (1), and the outer reinforcing ribs (3) and the inner reinforcing ribs (4) are arranged in a spiral structure and the spiral directions of the outer reinforcing ribs (3) and the inner reinforcing ribs (4) are opposite.

2. The high-voltage power transmission steel-cored aluminum strand with fracture resistance according to claim 1, characterized in that: The outer wall of the steel core (1) is wrapped with a tensile-resistant layer (5).

3. The high-voltage power transmission steel-cored aluminum strand with fracture resistance according to claim 2, characterized in that: The outer part of the tensile-resistant layer (5) is wrapped with an armored layer (6).

4. The high-voltage power transmission steel-cored aluminum strand with fracture resistance according to claim 3, characterized in that: The outer part of the armored layer (6) is wrapped with a bending-resistant layer (7).

5. The high-voltage power transmission steel-cored aluminum strand with fracture resistance according to claim 4, characterized in that: The outer part of the bending-resistant layer (7) is wrapped with a connecting layer (8), the outer wall of the connecting layer (8) is provided with an outer spiral embedding path groove matched with the aluminum strand (2), and the aluminum strand (2) is spirally embedded and connected with the outer spiral embedding path groove.

Images