Aluminum alloy conductor waterproof cable

Abstract

The utility model provides an aluminum alloy conductor waterproof cable which comprises a cable body, a buffer layer is arranged in the center of the cable body, a second waterproof layer is arranged outside the buffer layer, and at least five aluminum alloy wires are arranged between the buffer layer and the second waterproof layer. The aluminum alloy wire comprises a wire core arranged in the center, an insulating layer and a first waterproof layer, wherein the insulating layer and the first waterproof layer are arranged outside the wire core in a sleeving mode. The wire core is an aluminum alloy conductor. At least five supporting bodies are fixedly arranged on the inner side of the second waterproof layer; a shielding layer is arranged between the second waterproof layer and the buffer layer, a braid layer is arranged on the outer side of the second waterproof layer, and a third waterproof layer is arranged on the outer side of the braid layer; the cable adopts a multiple waterproof structure of the first waterproof layer, the second waterproof layer and the third waterproof layer, so that moisture is effectively prevented from permeating into the cable, the durability of the cable in a humid or buried environment is enhanced, and long-term stable operation is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and more specifically to an aluminum alloy conductor waterproof cable. Background Art

[0002] With the continuous increase in the demand for electrification in modern society, various cables have been widely used in the fields of electricity, communication, industry, etc. Traditional cables usually use copper as the conductor. Although copper has good electrical conductivity and corrosion resistance, its weight is relatively large and the cost is relatively high. In some special occasions, such as large-scale laying or long-distance transmission, the weight and cost problems of copper conductor cables are particularly prominent.

[0003] To solve these problems, aluminum alloy conductors have gradually been applied to cable manufacturing. Aluminum alloy conductors have the advantages of light weight and low cost compared with copper conductors, and can also provide good electrical conductivity under certain conditions. However, aluminum alloy conductors are relatively weak in terms of corrosion resistance and mechanical strength. Especially in humid environments such as pools or buried in mud, aluminum alloy conductors are easily affected by the outside world, resulting in performance degradation or shortened service life. Therefore, how to improve the waterproofness and mechanical strength of the cable on the basis of using aluminum alloy conductors has become an important topic in cable design. Content of the Utility Model

[0004] In view of this, the utility model provides an aluminum alloy conductor waterproof cable.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An aluminum alloy conductor waterproof cable, including a cable main body. A buffer layer is provided in the center of the cable main body, and a second waterproof layer is provided outside the buffer layer. At least five aluminum alloy wires are provided between the buffer layer and the second waterproof layer. The aluminum alloy wire includes a wire core provided in the center, an insulating layer and a first waterproof layer sleeved outside the wire core. The wire core is a conductor made of aluminum alloy material; at least 5 supports are fixedly provided on the inner side of the second waterproof layer; a shielding layer is provided between the second waterproof layer and the buffer layer, a braided layer is provided outside the second waterproof layer, and a third waterproof layer is provided outside the braided layer.

[0007] In a preferred technical scheme, a buffer support with a cross-shaped cross-section is provided inside the buffer layer.

[0008] In a preferred technical scheme, a plurality of convex fixing protrusions are provided on the inner side of the third waterproof layer.

[0009] In a preferred technical scheme, the plurality of fixing protrusions are evenly distributed on the inner side of the third waterproof layer, and the fixing protrusions are integrally formed on the inner side of the third waterproof layer.

[0010] In a preferred technical solution, the braided layer is made of soft copper wires with a diameter of 0.1 - 0.25 mm, and the braiding density is less than 85%.

[0011] In a preferred technical solution, the support body is integrally formed inside the second waterproof layer, and the support body extends towards the buffer layer and is located between two aluminum alloy wires.

[0012] In a preferred technical solution, the insulating layer is made of one of polyimide, polytetrafluoroethylene, and polyvinyl chloride.

[0013] In a preferred technical solution, the first waterproof layer is a polyurethane waterproof coating with a thickness greater than 0.1 mm; the second waterproof layer is made of polyethylene, and the third waterproof layer is made of rubber.

[0014] From the above technical solutions, compared with the prior art, the present utility model has the following beneficial technical effects:

[0015] The cable adopts a multi-layer waterproof structure of the first waterproof layer, the second waterproof layer, and the third waterproof layer, effectively preventing moisture from penetrating into the cable interior, enhancing the durability of the cable in a humid or buried environment, and ensuring long-term stable operation. A support body is arranged inside the second waterproof layer, which separates the aluminum alloy conductors, provides stable support, and prevents the cable from deforming or being damaged when subjected to external pressure or bending. The buffer layer cooperates with the braided layer to further enhance the anti-extrusion and anti-bending performance of the cable, avoiding displacement of the aluminum alloy conductors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0017] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model.

[0018] Reference numerals in the drawings: 100, cable body; 110, aluminum alloy wire; 111, wire core; 112, insulating layer; 113, first waterproof layer; 130, second waterproof layer; 120, buffer layer; 140, shielding layer; 150, braided layer; 160, third waterproof layer; 131, support body; 121, buffer bracket; 161, fixing convex. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0020] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0021] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0022] An aluminum alloy conductor waterproof cable, please refer to Figure 1 , including a cable body 100, Figure 1This is the cross-sectional structure of the present utility model. The cable main body 100 is a cylindrical structure. A buffer layer 120 is provided at the center inside it. A second waterproof layer 130 is provided outside the buffer layer 120. Five aluminum alloy wires 110 are provided between the buffer layer 120 and the second waterproof layer 130. The number of aluminum alloy wires 110 is not limited to this embodiment. The aluminum alloy wires 110 are evenly spaced around the outside of the buffer layer 120. The second waterproof layer 130 covers the outside of the aluminum alloy wires 110. The aluminum alloy wire 110 includes a wire core 111 provided at the center, an insulating layer 112 sleeved outside the wire core 111, and a first waterproof layer 113. The aluminum alloy wire 110 serves as the conductor wire of the cable. The wire core 111 is a conductor made of aluminum alloy material, which has the advantages of light weight, low cost, and good wire performance. The insulating layer 112 and the first waterproof layer 123 are sequentially wrapped outside the wire core 111 from the inside to the outside. The insulating layer 112 is made of thermoplastic resin material. The insulating layer 112 and the first waterproof layer 123 respectively play the roles of insulating and waterproofing the wire core, enabling the 5 aluminum alloy wires 110 to conduct electricity independently and avoiding mutual influence. Five support bodies 131 are fixedly provided inside the second waterproof layer 130. The support bodies 131 are integrally formed inside the second waterproof layer 130. The support bodies 131 extend toward the buffer layer 120 and are located between two aluminum alloy wires 110. The support bodies 131 extend toward the buffer layer 120, so that each aluminum alloy wire 110 is separated. In this embodiment, the support bodies 131 extend toward the buffer layer 120 and connect to the outside of the buffer layer 120. The support bodies 131 can provide a stable support force to keep the aluminum alloy wires 110 inside the second waterproof layer 130 stable. When the cable main body 100 is squeezed, it can prevent internal deformation and avoid deformation or displacement of the aluminum alloy wires 110, ensuring the normal use of the cable.

[0023] Furthermore, a shielding layer 140 is provided between the second waterproof layer 130 and the buffer layer 120. The shielding layer 140 wraps each aluminum alloy wire 110. The shielding layer 140 is used for electromagnetic shielding, which can reduce the interference of external electromagnetic fields on the cable itself and also reduce the radiation influence of the cable on the outside. A braided layer 150 is provided outside the second waterproof layer 130. A third waterproof layer 160 is provided outside the braided layer 150. A plurality of raised fixing protrusions 161 are provided inside the third waterproof layer 160. The plurality of fixing protrusions 161 are evenly distributed inside the third waterproof layer 160. The fixing protrusions 161 are integrally formed inside the third waterproof layer 160. The braided layer 150 is located inside the third waterproof layer 160. The fixing protrusions 161 play a role in supporting and stabilizing the braided layer 150, avoiding loosening or displacement of the braided layer 150. The third waterproof layer 160 is located on the outermost layer of the cable main body 100. Cooperating with the second waterproof layer 130 and the first waterproof layer 113, it provides multiple waterproof performances, making the cable main body 100 have good waterproofness.

[0024] Further, the braided layer 150 is made of soft copper wires with a diameter of 0.1 mm and a braiding density of 80%. The soft copper wires are cross-braided to form the braided layer 150, which plays a role in protecting and shielding the cable, ensuring the mechanical strength and transmission quality of the cable. The braided layer 150 made of soft copper wires may shift or loosen in an unsupported and stable state, affecting the performance of the cable. The braided layer 150 pressed and positioned by the fixing convex 161 can prevent shifting and improve the service life. The braided layer 150 with a higher braiding density can improve the shielding effect of the cable. The braided layer 150 has a certain flexibility, making the cable easier to bend and more flexible.

[0025] Further, a buffer bracket 121 with a cross-sectional structure is provided inside the buffer layer 120. The buffer layer 120 is made of rubber material. The buffer bracket 121 is integrally formed inside the buffer layer 120. The buffer layer 120 forms a good buffer and support function through the buffer bracket 121, which can absorb the pressure received outside the cable, avoiding breakage or displacement of the aluminum alloy wire 110 when the cable is bent or squeezed. The insulating layer 112 is made of polytetrafluoroethylene material, but its material is not limited to this embodiment. In other embodiments, the insulating layer 112 may be made of polyimide or polyvinyl chloride material; the first waterproof layer 123 is made of urethane waterproof coating with a thickness greater than 0.1 mm, the second waterproof layer 130 is made of polyethylene material, and the third waterproof layer 160 is made of rubber material. Different materials have different characteristics. The design of the three waterproof layers with different characteristics makes the cable structure more reasonable, ensuring strong waterproof performance of the cable. Combined with the structures of the braided layer 150 and the buffer layer 120, it has anti-extrusion and anti-bending properties and is suitable for use in humid environments or buried in muddy areas.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waterproof cable with an aluminum alloy conductor, comprising a cable body (100), characterized in that: A buffer layer (120) is provided at the center of the cable body (100). A second waterproof layer (130) is provided outside the buffer layer (120). At least five aluminum alloy wires (110) are provided between the buffer layer (120) and the second waterproof layer (130). The aluminum alloy wire (110) includes a wire core (111) provided at the center, an insulating layer (112) sleeved outside the wire core (111), and a first waterproof layer (113). The wire core (111) is a conductor made of aluminum alloy material. At least 5 supports (131) are fixedly provided on the inner side of the second waterproof layer (130). A shielding layer (140) is provided between the second waterproof layer (130) and the buffer layer (120). A braided layer (150) is provided outside the second waterproof layer (130). A third waterproof layer (160) is provided outside the braided layer (150).

2. The waterproof cable with an aluminum alloy conductor according to claim 1, characterized in that: A buffer bracket (121) with a cross-shaped cross-section is provided inside the buffer layer (120).

3. The waterproof cable with an aluminum alloy conductor according to claim 1, characterized in that: A plurality of raised fixing convex bodies (161) are provided on the inner side of the third waterproof layer (160).

4. The waterproof cable with an aluminum alloy conductor according to claim 3, characterized in that: The plurality of fixing convex bodies (161) are evenly distributed on the inner side of the third waterproof layer (160), and the fixing convex bodies (161) are integrally formed on the inner side of the third waterproof layer (160).

5. A waterproof cable with an aluminum alloy conductor according to claim 1, characterized in that: The braided layer (150) is woven from soft copper wires with a diameter of 0.1 - 0.25 mm, and its braiding density is less than 85%.

6. The waterproof cable with an aluminum alloy conductor according to claim 1, characterized in that: The support (131) is integrally formed on the inner side of the second waterproof layer (130), and the support (131) extends towards the buffer layer (120) and is located between two aluminum alloy wires (110).

7. The waterproof cable with an aluminum alloy conductor according to claim 1, wherein: The material of the insulating layer (112) is one of polyimide, polytetrafluoroethylene, and polyvinyl chloride.

8. The waterproof cable with an aluminum alloy conductor according to claim 1, characterized in that: The first waterproof layer (113) is a polyurethane waterproof coating with a thickness greater than 0.1 mm. The second waterproof layer (130) is made of polyethylene material, and the third waterproof layer (160) is made of rubber material.

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