Corrosion-proof steel-cored aluminum stranded wire

Abstract

The utility model relates to the cable protection field, concretely is a kind of anticorrosive steel core aluminium stranded conductor, including steel core, inner layer aluminium stranded conductor, center aluminium stranded conductor, outer layer aluminium stranded conductor, the steel core outside is provided with inner layer aluminium stranded conductor, the inner layer aluminium stranded conductor outside is wrapped and is provided with center aluminium stranded conductor, the center aluminium stranded conductor outside is wrapped and is provided with outer layer aluminium stranded conductor, the inner layer aluminium stranded conductor, center aluminium stranded conductor, outer layer aluminium stranded conductor are all spiral winding and are wrapped, and the spiral direction of inner layer aluminium stranded conductor, center aluminium stranded conductor, outer layer aluminium stranded conductor is opposite each other, the outer layer aluminium stranded conductor outside intermittent fixed setting has locking ring. Utilize the cooperation of outer layer protection mechanism, inner layer protection mechanism, transfer unilateral stress, to avoid the bending of cable, to avoid stress concentration, avoid external oxide layer to fall off, improve the anticorrosive effect of aluminium cable.

Description

Technical Field

[0001] This utility model relates to the field of cable protection, and in particular to a corrosion-resistant steel core aluminum stranded wire. Background Technology

[0002] Corrosion-resistant steel-cored aluminum stranded wire is an overhead transmission conductor that, based on traditional steel-cored aluminum stranded wire, undergoes special anti-corrosion treatment of its core components or uses anti-corrosion materials to resist natural environmental erosion and extend its service life. It retains the core advantages of traditional ACSR high-strength steel core with its tensile strength and high-conductivity aluminum wire layer for current transmission, while overcoming its weakness of susceptibility to corrosion in harsh environments. It is widely used in critical infrastructure such as power grids and transmission lines.

[0003] In the prior art, compared with the Chinese utility model with announcement number CN221327390U, a corrosion-resistant high-strength steel-cored aluminum stranded wire is disclosed, which is protected by an external bearing mechanism. However, in actual use, it has been found that due to excessive bending during winding and handling, the outer oxide layer is very easy to fall off. When there is a thickness difference between adjacent oxide layers, moisture will accumulate, further inducing corrosion. Utility Model Content

[0004] The purpose of this utility model is to provide a corrosion-resistant steel-cored aluminum stranded wire in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A corrosion-resistant steel-core aluminum stranded wire includes a steel core, an inner layer of aluminum stranded wire, a center aluminum stranded wire, and an outer layer of aluminum stranded wire. The inner layer of aluminum stranded wire is disposed outside the steel core. The center aluminum stranded wire is wrapped around the inner layer of aluminum stranded wire. The outer layer of aluminum stranded wire is wrapped around the center aluminum stranded wire. The inner layer of aluminum stranded wire, the center aluminum stranded wire, and the outer layer of aluminum stranded wire are all spirally wound, and the spiral directions of the inner layer of aluminum stranded wire, the center aluminum stranded wire, and the outer layer of aluminum stranded wire are opposite to each other. Locking rings are intermittently fixed on the outer layer of aluminum stranded wire. An inner protective mechanism is disposed between the inner layer of aluminum stranded wire and the center aluminum stranded wire. An outer protective mechanism is disposed between the center aluminum stranded wire and the outer layer of aluminum stranded wire. The inner and outer sides of the outer protective mechanism and the inner protective mechanism are supported by support plates to cooperate with the inner layer of aluminum stranded wire, the center aluminum stranded wire, and the outer layer of aluminum stranded wire.

[0007] Preferably, the support plate is an arc-shaped plate.

[0008] Preferably, the outer protective mechanism includes a stress layer and an inner traction wire. The stress layer is wrapped with a rubber layer. The stress layer is fixed to the support plate. Adjacent support plates are connected by the inner traction wire.

[0009] Preferably, the inner protective structure includes a tension net and anchor points. The tension net is externally connected to the inner aluminum stranded wire and the central aluminum stranded wire through a rubber layer. The tension net is connected to the support plate through the anchor points.

[0010] Preferably, the tension net is a cylindrical structure and is formed by several diamond-shaped nets surrounding it.

[0011] Preferably, the stress layer is made of steel.

[0012] Preferably, the anchor point is located at the intersection of the rhombuses, and the support plate is connected to the anchor point by welding.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By utilizing the combined outer and inner protective mechanisms, unilateral stress is transferred, thereby preventing cable bending, stress concentration, and peeling of the external oxide layer, thus improving the corrosion resistance of aluminum cables. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the anti-corrosion steel core aluminum stranded wire described in this utility model;

[0017] Figure 2 This is a cross-sectional view of the anti-corrosion steel-core aluminum stranded wire described in this utility model;

[0018] Figure 3 This is a schematic diagram showing the distribution structure of the outer and inner protective mechanisms of the anti-corrosion steel-core aluminum stranded wire described in this utility model;

[0019] Figure 4 This is a schematic diagram of the outer protective mechanism of the anti-corrosion steel core aluminum stranded wire described in this utility model;

[0020] Figure 5 This is a top view of the tensioning mesh for the anti-corrosion steel-core aluminum stranded wire described in this utility model;

[0021] Figure 6 This is a schematic diagram of the inner protective mechanism of the anti-corrosion steel core aluminum stranded wire described in this utility model.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1. Steel core; 2. Inner aluminum stranded wire; 3. Center aluminum stranded wire; 4. Outer aluminum stranded wire; 5. Locking ring; 6. Outer protective mechanism; 7. Inner protective mechanism; 8. Support plate; 61. Stress layer; 62. Inner traction wire; 71. Pull net; 72. Anchor point. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-6As shown, a corrosion-resistant steel-cored aluminum stranded wire includes a steel core 1, an inner layer aluminum stranded wire 2, a central aluminum stranded wire 3, and an outer layer aluminum stranded wire 4. The inner layer aluminum stranded wire 2 is arranged outside the steel core 1, the central aluminum stranded wire 3 is wrapped around the inner layer aluminum stranded wire 2, and the outer layer aluminum stranded wire 4 is wrapped around the central aluminum stranded wire 3. The inner layer aluminum stranded wire 2, the central aluminum stranded wire 3, and the outer layer aluminum stranded wire 4 are all spirally wound, and the spiral directions of the inner layer aluminum stranded wire 2, the central aluminum stranded wire 3, and the outer layer aluminum stranded wire 4 are opposite to each other. Locking rings 5 ​​are intermittently fixed outside the outer layer aluminum stranded wire 4. An inner protective mechanism 7 is arranged between the inner layer aluminum stranded wire 2 and the central aluminum stranded wire 3, and an outer protective mechanism 6 is arranged between the central aluminum stranded wire 3 and the outer layer aluminum stranded wire 4. The outer protective mechanism 6 and the inner protective mechanism 7 are supported by support plates 8 on both the inner and outer sides.

[0028] Preferably, the support plate 8 is an arc-shaped plate to improve the fit.

[0029] Preferably, the outer protective mechanism 6 includes a stress layer 61 and an inner traction wire 62. The stress layer 61 is wrapped with a rubber layer. The stress layer 61 is fixed to the support plate 8. Adjacent support plates 8 are connected by the inner traction wire 62, which further improves the transmission and balance of stress.

[0030] Preferably, the inner protective mechanism 7 includes a tension net 71 and anchor points 72. The tension net 71 is connected to the inner aluminum stranded wire 2 and the central aluminum stranded wire 3 by a rubber layer on the outside. The tension net 71 is connected to the support plate 8 through the anchor points 72 to improve the fastening effect of the connection points.

[0031] Preferably, the tension net 71 is a cylindrical structure and is composed of several diamond-shaped nets, which improve the stress distribution effect by utilizing the diamond shape.

[0032] Preferably, the stress layer 61 is made of steel.

[0033] Preferably, the anchor point 72 is located at the intersection of the rhombuses, and the support plate 8 is connected to the anchor point 72 by welding.

[0034] Working principle: When the cable is transported and wound up, the outermost aluminum stranded wire 4 is subjected to stress compression and bending. At this time, the stress is first transmitted to the stress layer 61 through the outer aluminum stranded wire 4 and the support plate 8. Then, the inner traction wire 62 inside the stress layer 61 will transfer the unilateral stress to the interlaced inner support plate 8 through kinetic energy. At this time, the tension of the other side is pulled by the tension of the inner traction wire 62 on one side, thereby distributing the stress evenly and avoiding stress concentration at a single point.

[0035] Excessive bending force continues to be transmitted inward. At this time, because the tension net 71 is a rhomboid structure, the stress at a single point is diffused to both sides along the axis through lateral tension, thereby avoiding excessive bending of the cable and thus avoiding excessive fatigue on the surface, which could lead to the oxide layer peeling off.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A corrosion-resistant steel-cored aluminum stranded wire, characterized in that: The structure includes a steel core (1), an inner layer of aluminum stranded wire (2), a center aluminum stranded wire (3), and an outer layer of aluminum stranded wire (4). The steel core (1) is surrounded by the inner layer of aluminum stranded wire (2), the inner layer of aluminum stranded wire (2) is surrounded by the center aluminum stranded wire (3), and the center aluminum stranded wire (3) is surrounded by the outer layer of aluminum stranded wire (4). The inner layer of aluminum stranded wire (2), the center aluminum stranded wire (3), and the outer layer of aluminum stranded wire (4) are all spirally wound, and the spiral of the inner layer of aluminum stranded wire (2), the center aluminum stranded wire (3), and the outer layer of aluminum stranded wire (4) is square. In opposite directions, the outer aluminum stranded wire (4) is intermittently fixed with locking rings (5), the inner aluminum stranded wire (2) and the center aluminum stranded wire (3) are provided with an inner protective mechanism (7), the center aluminum stranded wire (3) and the outer aluminum stranded wire (4) are provided with an outer protective mechanism (6), and the outer protective mechanism (6) and the inner protective mechanism (7) are both supported by support plates (8) on both the inner and outer sides of the outer protective mechanism (6) and the inner protective mechanism (7) to cooperate with the inner aluminum stranded wire (2), the center aluminum stranded wire (3) and the outer aluminum stranded wire (4).

2. The anti-corrosion steel-cored aluminum stranded wire according to claim 1, characterized in that: The support plate (8) is an arc-shaped plate.

3. The anti-corrosion steel-cored aluminum stranded wire according to claim 2, characterized in that: The outer protective mechanism (6) includes a stress layer (61) and an inner traction wire (62). The stress layer (61) is wrapped with a rubber layer. The stress layer (61) is fixed to the support plate (8). Adjacent support plates (8) are connected by the inner traction wire (62).

4. The anti-corrosion steel-cored aluminum stranded wire according to claim 3, characterized in that: The inner protective mechanism (7) includes a tension net (71) and anchor points (72). The tension net (71) is connected to the inner aluminum stranded wire (2) and the central aluminum stranded wire (3) by a rubber layer. The tension net (71) is connected to the support plate (8) by the anchor points (72).

5. The anti-corrosion steel-cored aluminum stranded wire according to claim 4, characterized in that: The tension net (71) is a cylindrical structure and is composed of several diamond-shaped nets.

6. The anti-corrosion steel-cored aluminum stranded wire according to claim 3, characterized in that: The stress layer (61) is made of steel.

7. The anti-corrosion steel-cored aluminum stranded wire according to claim 5, characterized in that: The anchor point (72) is located at the intersection of the rhombuses, and the support plate (8) is connected to the anchor point (72) by welding.

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