High-strength aluminum alloy cable

Abstract

The utility model discloses a high-strength aluminum alloy cable which is high in overall strength, good in flame retardant capability, high in wear resistance and good in corrosion resistance. Comprising three groups of conductors, the conductors are aluminum alloy conductors, the surfaces of the conductors are provided with first sheaths, the first sheaths comprise filling layers, the filling layers are located on the outer surfaces of the conductors, the outer surfaces of the filling layers are sleeved with winding layers, the outer surfaces of the winding layers are sleeved with main insulating layers, and the outer surfaces of the main insulating layers are sleeved with covering layers.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a kind of high-strength aluminum alloy cable. BACKGROUND

[0002] Aluminum alloy cable adds copper, iron, magnesium, silicon, zinc, boron and other alloy elements in aluminum, and at the same time, through process adjustment, the mechanical properties of aluminum alloy conductor are greatly improved, avoiding the problems of low elongation, poor creep resistance and poor flexibility of pure aluminum conductor, and increasing the connection reliability of cable system. The conductivity of aluminum alloy is 61.8% of the most commonly used copper IACS, and the current-carrying capacity is 79% of copper, which is better than the pure aluminum standard. However, under the same volume, the actual weight of aluminum alloy is about one-third of copper. Therefore, the weight of aluminum alloy cable is about half of copper cable under the same current-carrying capacity. Using aluminum alloy cable to replace copper cable can reduce the weight of cable, reduce the installation cost, reduce the wear and tear of equipment and cable, and make the installation work easier. At the same time, the aluminum alloy cable makes up for the shortcomings of the previous pure aluminum cable. Although the conductivity of the cable is not improved, the bending performance, creep resistance and corrosion resistance are greatly improved, which can ensure the continuous performance stability of the cable under long-time overload and overheating. Using AA-8030 series aluminum alloy conductor can greatly improve the conductivity and high temperature resistance of aluminum alloy cable, and solve the problems of pure aluminum conductor and creep.

[0003] For example, the Chinese patent with publication number CN219370654U discloses a high-strength aluminum alloy core power cable, which includes a basic assembly and a protection assembly. The basic assembly includes a reinforcing part and a conductive part, and the reinforcing part is arranged on the conductive part. The protection assembly includes a shielding layer, a tensile fiber layer, an anti-corrosion layer and an anti-oxidation layer. The shielding layer is arranged on the reinforcing part. The tensile fiber layer has the characteristic of resisting pulling. The heat insulation layer effectively prevents the influence of external heat on the aluminum alloy conductor. The shielding layer can shield the generated electromagnetic field in the cable. The metal strip makes the heat insulation layer, metal mesh layer and fire-resistant layer more firmly fixed together. The arrangement of the metal mesh layer increases the overall strength of the cable. The aluminum alloy core power cable has strong wear resistance and tensile resistance, is more resistant to external force impact and pollutant erosion, and has a longer service life.

[0004] However, during the installation and transportation of the cable, the cable is subjected to more extrusion and stretching, which can easily damage the internal structure of the cable. Therefore, the cable requires high structural strength, and the arrangement of the metal mesh layer alone cannot meet the structural strength requirement of the cable. UTILITY MODEL CONTENTS

[0005] The utility model wants to solve the technical problem: overcome prior art problem's defect, provide a kind of high-strength aluminium alloy cable, cable overall strength is high, and fire-retardant ability is good, and wear resistance is high, and corrosion resistance is good.

[0006] In order to solve the above technical problems, the technical scheme of the utility model is: a kind of high-strength aluminium alloy cable, including three groups of conductors, the conductor is aluminium alloy conductor, the surface of the conductor is equipped with first sheath, the first sheath includes filling layer, the filling layer is located the outer surface of conductor, the outer surface of the filling layer is covered with winding layer, the outer surface of the winding layer is covered with main insulation layer, the outer surface of the main insulation layer is covered with covering layer.

[0007] The effect reached by the above components is: when the cable needs to be converted, the winding layer is sleeved on the outer surface of the conductor, the filling layer is filled in the winding layer, the main insulation layer is sleeved on the surface of the winding layer, and then the covering layer is sleeved on the surface of the main insulation layer, so that the main insulation layer can reduce the possibility of electric leakage to a certain extent.

[0008] Preferably, the filling layer is a polypropylene non-woven fabric layer, the winding layer is formed by winding a strip-shaped polyethylene strip, the main insulation layer is a polyurethane layer, the covering layer is a chloroprene rubber, the outer surface of the covering layer is sleeved with a wrapping layer, and the wrapping layer is a polyolefin layer.

[0009] The effect reached by the above components is: after the covering layer is set, the wrapping layer is sleeved on the surface of the covering layer, so that the wrapping layer can shape the whole to a certain extent.

[0010] Preferably, the outer surface of the wrapping layer is sleeved with an armor layer, the armor layer is an aluminium alloy strip, the outer surface of the armor layer is sleeved with a fireproof layer, and the fireproof layer is a phenolic resin layer.

[0011] The effect reached by the above components is: after the wrapping layer is set, the armor layer is sleeved on the wrapping layer, and then the fireproof layer is sleeved on the surface of the armor layer, so that the fireproof layer and the armor layer can reduce the possibility that the cable is burned by fire to a certain extent.

[0012] Preferably, the outer surface of the fireproof layer is bonded with a bonding portion, the outer surface of the bonding portion is bonded with a secondary insulation layer, and the secondary insulation layer is a butyronitrile composite layer.

[0013] The effect reached by the above components is: after the fireproof layer is set, the secondary insulation layer is bonded to the surface of the fireproof layer through the bonding portion, so that the secondary insulation layer can increase the safety of the cable.

[0014] Preferably, the outer surface of the secondary insulation layer is provided with a second sheath, the second sheath includes a glue layer, the glue layer is bonded to the surface of the secondary insulation layer, the outer surface of the glue layer is bonded with a film coating layer, and the outer surface of the film coating layer is sleeved with a waterproof layer.

[0015] The effect achieved by the above components is that after the first sheath is set, the film layer is adhered to the surface of the secondary insulation layer through the adhesive layer, and the waterproof layer is sleeved on the film layer, so that the waterproof layer can increase the waterproof effect of the cable to a certain extent.

[0016] Preferably, the film layer is an epoxy resin layer, the waterproof layer is a longitudinal aluminum plastic composite tape layer, and the waterproof layer has a "spiral" structure.

[0017] Preferably, the outer surface of the waterproof layer is sleeved with a wear-resistant layer, the wear-resistant layer is an iron alloy layer, the outer surface of the wear-resistant layer is sleeved with a corrosion-resistant coating layer, and the corrosion-resistant coating layer is an epoxy coating layer.

[0018] The effect achieved by the above components is that after the waterproof layer is set, the wear-resistant layer is sleeved on the surface of the waterproof layer, and the corrosion-resistant coating layer is coated on the surface of the wear-resistant layer, so that the wear-resistant layer can increase the wear resistance of the cable to a certain extent.

[0019] By adopting the above technical scheme, the utility model has the following beneficial effects: through the first sheath, when the cable needs to be manufactured, the conductor is placed in the filling layer, the winding layer is wound on the surface of the filling layer, the main insulation layer is sleeved on the surface of the winding layer, the covering layer is attached to the surface of the main insulation layer, the wrapping layer is wrapped on the surface of the covering layer, the armor layer is sleeved on the surface of the covering layer, the armor layer can improve the overall strength of the cable, the fireproof layer is sleeved outside the armor layer, the secondary insulation layer is adhered to the surface of the fireproof layer through the adhesive part, the fireproof layer can increase the overall fireproof effect to a certain extent, and meanwhile, the second sheath is arranged, so that the wear resistance and corrosion resistance of the cable are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a sectional structure schematic view of the utility model.

[0021] Fig. 1 is a sectional structure schematic view of the utility model. DETAILED DESCRIPTION

[0022] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail below according to specific embodiments and in combination with the drawings.

[0023] As shown in the drawings, the utility model discloses a cable structure. Figure 1As shown, in this embodiment, a high-strength aluminum alloy cable is provided, which comprises three groups of conductors 1, the conductors 1 adopt aluminum alloy conductors, the surface of the conductors 1 is provided with a first sheath 2, by arranging the first sheath 2, the conductors 1 can have certain insulation effect, at the same time, the fireproof performance of the whole cable and the overall strength of the cable can be increased, the outer surface of the secondary insulation layer 29 is provided with a second sheath 3, by arranging the second sheath 3, the safety of the whole cable can be increased, and the corrosion resistance of the cable can be increased.

[0024] Now the specific arrangement and effect of the first sheath 2 and the second sheath 3 thereof will be described.

[0025] As shown, Figure 1 in this embodiment, the first sheath 2 comprises a filling layer 21, the filling layer 21 is located on the outer surface of the conductor 1, the outer surface of the filling layer 21 is sleeved with a winding layer 22, when the cable needs to be converted, the winding layer 22 is sleeved on the outer surface of the conductor 1, then the filling layer 21 is filled in the winding layer 22, the outer surface of the winding layer 22 is sleeved with a main insulation layer 23, then the main insulation layer 23 is sleeved on the surface of the winding layer 22, the outer surface of the main insulation layer 23 is sleeved with a covering layer 24, then the covering layer 24 is sleeved on the surface of the main insulation layer 23, the main insulation layer 23 can reduce the possibility of electric leakage to a certain extent, the filling layer 21 is a polypropylene non-woven fabric layer, the winding layer 22 is formed by winding a strip-shaped polyethylene strip, the main insulation layer 23 is a polyurethane layer, the covering layer 24 is a chloroprene rubber, the outer surface of the covering layer 24 is sleeved with a wrapping layer 25, the wrapping layer 25 is a polyolefin layer, after the covering layer 24 is arranged, the wrapping layer 25 is sleeved on the surface of the covering layer 24, the wrapping layer 25 can shape the whole body to a certain extent.

[0026] As shown, Figure 1 in particular, the outer surface of the wrapping layer 25 is sleeved with an armor layer 26, the armor layer 26 is formed by wrapping an aluminum alloy strip, after the wrapping layer 25 is arranged, the armor layer 26 is wrapped on the outer surface of the wrapping layer 25, the outer surface of the armor layer 26 is sleeved with a fireproof layer 27, the fireproof layer 27 is a phenolic resin layer, then the fireproof layer 27 is sleeved on the surface of the armor layer 26, the fireproof layer 27 and the armor layer 26 can reduce the possibility of the cable being burned by fire to a certain extent, the outer surface of the fireproof layer 27 is bonded with a bonding portion 28, the outer surface of the bonding portion 28 is bonded with a secondary insulation layer 29, the secondary insulation layer 29 is a butyronitrile composite layer, after the fireproof layer 27 is arranged, the secondary insulation layer 29 is bonded on the surface of the fireproof layer 27 through the bonding portion 28, the secondary insulation layer 29 can increase the safety of the cable.

[0027] As shown, Figure 1As shown, in this embodiment, the second sheath 3 includes an adhesive layer 31, which is bonded to the surface of the sub-insulation layer 29. A film layer 32 is bonded to the outer surface of the adhesive layer 31. After the first sheath 2 is installed, the film layer 32 is bonded to the surface of the sub-insulation layer 29 through the adhesive layer 31. A waterproof layer 33 is fitted onto the outer surface of the film layer 32, and then the waterproof layer 33 is fitted onto the film layer 32. The waterproof layer 33 can increase the waterproof effect of the cable to a certain extent. The film layer 32 is an epoxy resin layer, and the waterproof layer 33 is a longitudinally wrapped aluminum-plastic composite tape layer with a spiral structure.

[0028] like Figure 1 As shown, specifically, the outer surface of the waterproof layer 33 is covered with a wear-resistant layer 34, which is an iron alloy layer. After the waterproof layer 33 is installed, the wear-resistant layer 34 is placed on the surface of the waterproof layer 33. The outer surface of the wear-resistant layer 34 is covered with an anti-corrosion coating layer 35, which is an epoxy coating layer. The anti-corrosion coating layer 35 is then applied to the surface of the wear-resistant layer 34. The wear-resistant layer 34 can increase the wear resistance of the cable to a certain extent.

[0029] The working principle is as follows: When manufacturing a cable, conductor 1 is placed inside filler layer 21, then winding layer 22 is wound around the surface of filler layer 21, then main insulation layer 23 is fitted onto the surface of winding layer 22, then cover layer 24 is attached to the surface of main insulation layer 23, then wrapping layer 25 is wrapped around cover layer 24, then armor layer 26 is fitted onto cover layer 24, then fireproof layer 27 is fitted over armor layer 26, and finally secondary insulation layer 29 is bonded to the surface of fireproof layer 27 via adhesive joint 28. Fireproof layer 27 can increase the overall fireproof effect to a certain extent. During power transmission, electrical energy flows on the surface of conductor 1 and within the main insulation layer 23. The cable is designed to flow smoothly. By setting the first sheath 2, the conductor 1 can be insulated to a certain extent, and the fire resistance of the entire cable can be increased. At the same time, the armor layer 26 can improve the overall strength of the cable. After the first sheath 2 is set, the coating layer 32 is glued to the surface of the secondary insulation layer 29 through the adhesive layer 31, and then the waterproof layer 33 is put on the outside of the coating layer 32. The waterproof layer 33 can increase the overall waterproof effect to a certain extent. Then, the wear-resistant layer 34 is put on the outer surface of the waterproof layer 33, and finally the anti-corrosion coating layer 35 is applied to the surface of the wear-resistant layer 34. By setting the second sheath 3, the safety of the entire cable can be increased, and the corrosion resistance of the cable can also be increased.

[0030] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high strength aluminum alloy cable comprising three groups of conductors (1), characterized in that: The conductor (1) adopts an aluminum alloy conductor, a first sheath (2) is arranged on the surface of the conductor (1), the first sheath (2) comprises a filling layer (21), the filling layer (21) is arranged on the outer surface of the conductor (1), the outer surface of the filling layer (21) is sleeved with a winding layer (22), the outer surface of the winding layer (22) is sleeved with a main insulation layer (23), and the outer surface of the main insulation layer (23) is sleeved with a covering layer (24).

2. A high strength aluminum alloy cable as defined in claim 1, wherein: The filling layer (21) is a polypropylene non-woven fabric layer, the winding layer (22) is formed by winding a polyethylene strip, the main insulation layer (23) is a polyurethane layer, the covering layer (24) is a chloroprene rubber, the outer surface of the covering layer (24) is sleeved with a wrapping layer (25), and the wrapping layer (25) is a polyolefin layer.

3. A high strength aluminum alloy cable as defined in claim 2, wherein: The outer surface of the wrapping layer (25) is sleeved with an armor layer (26), the armor layer (26) is an aluminum alloy strip, the outer surface of the armor layer (26) is sleeved with a fireproof layer (27), and the fireproof layer (27) is a phenolic resin layer.

4. A high strength aluminum alloy cable as defined in claim 3, wherein: The outer surface of the fireproof layer (27) is bonded with a bonding portion (28), and the outer surface of the bonding portion (28) is bonded with a secondary insulation layer (29).

5. A high strength aluminum alloy cable as defined in claim 4, wherein: The outer surface of the secondary insulation layer (29) is provided with a second sheath (3), the second sheath (3) comprises a glue layer (31), the glue layer (31) is bonded on the surface of the secondary insulation layer (29), the outer surface of the glue layer (31) is bonded with a film coating layer (32), and the outer surface of the film coating layer (32) is sleeved with a waterproof layer (33).

6. A high strength aluminum alloy cable as defined in claim 5, wherein: The film coating layer (32) is an epoxy resin layer, the waterproof layer (33) is a longitudinal aluminum-plastic composite tape layer, and the waterproof layer (33) has a "spiral" structure.

7. A high strength aluminum alloy cable as defined in claim 5, wherein: The outer surface of the waterproof layer (33) is sleeved with a wear-resistant layer (34), and the outer surface of the wear-resistant layer (34) is sleeved with an anticorrosive coating layer (35).

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