A high elongation aluminum alloy conductor reinforced tape wrapped cable

Abstract

The present invention relates to the technical field of aluminum alloy conductor cables, and discloses a high-elongation aluminum alloy conductor reinforced tape wrapped cable. The present invention comprises an aluminum alloy conductor unit, a spirally twisted layer, a gradient reinforced wrapping layer, a composite protective outer layer and a protective structure. The aluminum alloy conductor unit maintains high elongation by means of a nanocrystalline layer, the spirally twisted layer disperses tension by gradient twisting and variable pitch constraints, the gradient reinforced wrapping layer uses expanded particles and composite tapes to block water, and the protective structure relies on adjustable round tubes and elastic components to lock and disperse bending stress when overloaded, thereby achieving high elongation and strong tensile strength of the cable as well as efficient water blocking and overload bending resistance performance improvements, ensuring stable operation of the cable under complex working conditions and significantly extending the service life of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy conductor cables, in particular to a high-elongation aluminum alloy conductor reinforced tape wrapped cable. Background Art

[0002] With the rapid development of new energy power transmission, marine engineering, rail transit and other fields, higher requirements are placed on the flexibility, tensile strength, weather resistance and mechanical damage resistance of cables. Traditional aluminum alloy cables have problems such as low elongation at room temperature, uneven stress distribution of twisted structure, and single function of protective layer. It is difficult to meet the long-term stable operation requirements under complex working conditions. In the existing technology, the conductor material mostly adopts ternary or quaternary alloy system, and the strength is improved through a single aging treatment, but the elongation is sacrificed. The stranded cable core is generally wound with a fixed pitch, which easily leads to local stress concentration. The material combination and structural function of the sheath and protective layer are insufficient.

[0003] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the existing aluminum alloy conductors have a low elongation. During the cable laying process, especially long-distance laying or occasions that require frequent bending, the conductors are easily broken due to tensile force, affecting the installation reliability and service life of the cable. In traditional technology, single-angle wrapping leads to stress concentration, and the wrapping layer is easy to break when bending, with limited effect, making it difficult to achieve the dual effects of high elongation and reinforced tape wrapping at the same time. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology has the disadvantage that a single bend wrapping is easily damaged. For this reason, we propose a high-elongation aluminum alloy conductor reinforced tape wrapped cable.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: a high-elongation aluminum alloy conductor reinforced tape wrapped cable, characterized in that it includes: an aluminum alloy conductor unit, made of a five-element alloy of aluminum, zirconium, titanium, magnesium and cerium, which is subjected to low-temperature solid solution, gradient aging and pulse shot peening to form a surface nanocrystalline layer, and the room temperature elongation is ≥30%; the aluminum alloy conductor unit includes a conductor core, and the outer side of the conductor core is wrapped with an insulating coating; the outer side of the insulating coating is wrapped with a spiral twisted layer, and the spiral twisted layer is composed of two or more aluminum alloy conductor units spirally wound on the outer side of a carbon fiber reinforced epoxy resin central core with a gradient increasing twist angle; the main body of the spiral twisted layer is composed of a twisted conductor unit; the outer side of the twisted conductor unit is wrapped with a variable pitch twisted constraint tape to maintain a gradient twisted structure with an inner layer pitch of 8-10D and an outer layer pitch of 12-15D, where D is the cable core diameter; the outer side of the spiral twisted layer is wrapped with a gradient reinforcement wrapping layer, and the gradient reinforcement wrapping layer is composed of aramid, basalt, graphite The graphene nanosheet composite tape is formed by spiral wrapping at a variable angle, and the spiral wrapping layer includes an inner layer with a wrapping angle of 30°-40°, a middle layer with a wrapping angle of 45°-55°, and an outer layer with a wrapping angle of 60°-70°; the interlayers of the spiral wrapping layer are filled with expanded perlite and water-absorbing resin composite particles, the expansion multiple is ≥200 times, and the water absorption rate is ≤5mg / min; the outer side of the gradient reinforced wrapping layer is wrapped with a composite protective outer layer, and the composite protective outer layer is composed of a graphene low-density polyethylene composite layer, and the surface is provided with circumferentially distributed convex strips; the outer side of the composite protective outer layer is provided with convex strips, which are used for anti-slip effect, and the outer side of the composite protective outer layer is movably connected to a protective structure, which includes an adjustable circular tube component movably connected to the outer side of the composite protective outer layer, the inner side of the adjustable circular tube component is rotatably connected to a ball, the ball is in contact with the surface of the composite protective outer layer, and the inner side of the adjustable circular tube component is provided with an elastic component, which is used to disperse the tensile force when the cable is bent and overloaded, thereby preventing the cable from breaking.

[0006] Preferably, the aluminum alloy conductor unit is covered with an insulating coating layer, which is made of cross-linked polyethylene material with a thickness of 0.8-1.2 mm and a breakdown field strength of ≥35 kV / mm.

[0007] Preferably, a filling layer is provided between the twisted conductor units of the spirally twisted layer and the variable pitch twisted restraint tape, and the filling layer is made of a highly elastic silicone rubber material with a Shore hardness of A40-50 and an elongation at break ≥600%.

[0008] Preferably, the spiral wrapping layer of the gradient reinforced wrapping layer is composed of three layers of composite tapes: inner layer: aramid fiber tape, accounting for 60% by volume, tensile strength ≥2800MPa; middle layer: basalt fiber tape, accounting for 30% by volume, high temperature resistance ≥800℃; outer layer: graphene nanosheet composite tape, accounting for 10% by volume, surface coated with 5-8μm nano-silica modified silicone rubber coating.

[0009] Preferably, the composite particles of expanded perlite and water-absorbing resin have a particle size of 0.5-1.5 mm and are composed of an expanded perlite core and an outer layer of highly water-absorbing resin. After being saturated with water, the volume expands by ≥200 times to form a water-blocking sealing layer.

[0010] Preferably, the convex strips of the composite protective outer layer are evenly distributed along the cable axis, with a height of 0.3-0.5 mm, a width of 1.0-1.5 mm, and a spacing of 2-3 mm. The convex strips are made of graphene-reinforced polyethylene material, which is 20-30% harder than the base.

[0011] Preferably, the adjustable circular tube component includes a circular shell 1 movably connected to the outside of the composite protective outer layer, a telescopic bellows is provided on one side of the circular shell 1, a circular shell 2 is provided on one side of the telescopic bellows, and the ball is rotatably connected to the circular shell 1 and the telescopic bellows.

[0012] Preferably, the inner walls of the circular shell and the telescopic bellows are provided with grooves, the interior of the grooves is slidably connected with a movable plate, and the movable plate is in a right-angled trapezoid.

[0013] Preferably, a slider is slidably connected inside the groove, a tension spring is provided on one side of the slider, and a driven plate is provided on the other side of the slider. The bottom surface of the driven plate is inclined, and the inclined surface of the driven plate fits with the inclined surface of the moving plate.

[0014] Preferably, a card block is provided on one side of the driven plate, a card groove is provided on the surface of the convex strip, and a deformable spring piece is provided on one side of the movable plate. The deformable spring piece is triangular. When the composite protective outer layer is bent, its outer side is radially stretched and deformed to increase, thereby squeezing the deformable spring piece. A spring is provided on one side of the elastic component.

[0015] The technical effects and advantages of the present invention are as follows: In the present invention, the aluminum alloy conductor unit is strengthened by multiple processes, and the surface nanocrystalline layer and high elongation lay the foundation for tensile strength; the spirally twisted layer is matched with the filling layer with a gradient twist angle and a variable pitch constraint belt to accurately disperse the axial bending tension and avoid concentrated force on the conductor; the gradient reinforced wrapping layer uses expanded particles and composite tape to construct a physical water barrier, and the outer layer convex strips strengthen the structure and anti-slip properties, and lock the dispersed stress when the protective structure is overloaded. It has been verified by high-frequency bending and salt spray tests, and has been defended from material to structure layer by layer to ensure stable operation of the cable under complex working conditions, solving the problems of easy breakage, poor water resistance and poor durability of traditional cables. The cable is not easy to install and can withstand high-frequency bending without any damage. It is easy to install and can withstand high-frequency bending without any damage. It is a very cost-effective and reliable protection solution for high-frequency bending and complex laying scenarios. It has the multiple values ​​of flexible adaptation, reliable locking and extended service life, which greatly improves the reliability of cable after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components.

[0017] Figure 1 This is a schematic diagram of a layered three-dimensional vertical cross-sectional structure of a high-elongation aluminum alloy conductor reinforced tape wrapped cable proposed in one embodiment of the present invention;

[0018] Figure 2 This is a schematic front view of a cable with a high-elongation aluminum alloy conductor and a reinforced tape wrapped therein, according to one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a layered three-dimensional transverse cross-section of a high-elongation aluminum alloy conductor reinforced tape wrapped cable proposed in one embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of a high-elongation aluminum alloy conductor reinforcement tape wrapped around a cable and a protective structure proposed in one embodiment of the present invention;

[0021] Figure 5 A three-dimensional cross-sectional schematic diagram of a protective structure of a cable wrapped with a high-elongation aluminum alloy conductor reinforced tape, according to one embodiment of the present invention;

[0022] Figure 6This is a schematic diagram of the three-dimensional structure of the elastic component of the high-elongation aluminum alloy conductor reinforced tape wrapped cable proposed in one embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of a three-dimensional partially enlarged cross-sectional structure of an elastic component of a cable wrapped with a high-elongation aluminum alloy conductor reinforcement tape proposed in one embodiment of the present invention.

[0024] Legend: 1. Aluminum alloy conductor unit; 11. Insulation coating; 12. Conductor core; 2. Spiral stranded layer; 21. Stranded conductor unit; 22. Variable pitch stranded restraint tape; 3. Gradient reinforced wrapping layer; 31. Spiral wrapping layer; 32. Expanded perlite and water-absorbing resin composite particles; 4. Composite protective outer layer; 5. Raised strip; 6. Protective structure; 61. Round shell one; 62. Telescopic bellows; 63. Round shell two; 64. Ball; 65. Elastic component; 651. Groove; 652. Moving plate; 653. Driven plate; 654. Slider; 655. Tension spring; 656. Block; 657. Deformable spring; 658. Spring; 659. Slot. DETAILED DESCRIPTION

[0025] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0026] Reference Figure 1-7As shown, the present invention provides a technical solution: a high-elongation aluminum alloy conductor reinforced tape wrapped cable, comprising: an aluminum alloy conductor unit 1, made of a five-element alloy of aluminum, zirconium, titanium, magnesium and cerium, subjected to low-temperature solid solution, gradient aging and pulse shot peening treatment to form a surface nanocrystalline layer, with a room temperature elongation of ≥30%; the aluminum alloy conductor unit 1 includes a conductor core 12, the outer side of the conductor core 12 is wrapped with an insulating coating 11; the outer side of the insulating coating 11 is wrapped with a spirally stranded layer 2, the spirally stranded layer 2 is composed of two or more aluminum alloy conductor units 1 in a gradient increasing manner The twist angle is spirally wound on the outside of the carbon fiber reinforced epoxy resin central core; the main body of the spiral twisted layer 2 is composed of a twisted conductor unit 21; the outside of the twisted conductor unit 21 is coated with a variable pitch twisted constraint tape 22, maintaining the gradient twisted structure of the inner layer pitch 8-10D and the outer layer 12-15D, D is the cable core diameter; the outside of the spiral twisted layer 2 is wrapped with a gradient reinforcement wrapping layer 3, which is formed by spirally wrapping aramid, basalt, and graphene nanosheet composite tape with a variable angle, and the spiral wrapping layer 31 includes an inner layer wrapping angle of 30°-40° The spiral wrapping layer 31 is filled with expanded perlite and water-absorbing resin composite particles 32, with an expansion multiple of ≥200 times and a water absorption rate of ≤5mmin; the outer side of the gradient reinforced wrapping layer 3 is wrapped with a composite protective outer layer 4, which is composed of a graphene low-density polyethylene composite layer and has circumferentially distributed ridges 5 on the surface; the outer side of the composite protective outer layer 4 is provided with ridges 5 for anti-slip effect, and the outer side of the composite protective outer layer 4 is movably connected with a protective structure 6, The protective structure 6 includes an adjustable circular tube component movably connected to the outside of the composite protective outer layer 4. The inner side of the adjustable circular tube component is rotatably connected to a ball 64, and the ball 64 contacts the surface of the composite protective outer layer 4. The inner side of the adjustable circular tube component is provided with an elastic component 65. The elastic component 65 is used to disperse the tensile force when the cable is bent and overloaded, thereby preventing the cable from breaking; the aluminum alloy conductor unit 1 is covered with an insulating coating layer 11, and the insulating coating layer 11 is made of cross-linked polyethylene material with a thickness of 0.8-1.2mm and a breakdown field strength ≥35kV / mm.

[0027] A filling layer is provided between the twisted conductor unit 21 of the spirally twisted layer 2 and the variable pitch twisted restraint belt 22. The filling layer is made of highly elastic silicone rubber material with a Shore hardness of A40-50 and an elongation at break of ≥600%.

[0028] The spiral wrapping layer 31 of the gradient reinforced wrapping layer 3 is composed of three layers of composite tapes: inner layer: aramid fiber tape, accounting for 60% by volume, with a tensile strength of ≥2800MPa; middle layer: basalt fiber tape, accounting for 30% by volume, with a high temperature resistance of ≥800℃; outer layer: graphene nanosheet composite tape, accounting for 10% by volume, with a surface coated with 5-8μm nano-silica modified silicone rubber coating.

[0029] The expanded perlite and water-absorbing resin composite particles 32 have a particle size of 0.5-1.5 mm and are composed of an expanded perlite core and an outer layer of highly water-absorbing resin. After being saturated with water, the volume expands by ≥200 times to form a water-blocking sealing layer.

[0030] The ridges 5 of the composite protective outer layer 4 are evenly distributed along the cable axis, with a height of 0.3-0.5 mm, a width of 1.0-1.5 mm, and a spacing of 2-3 mm. The ridges 5 are made of graphene-reinforced polyethylene material, which is 20-30% harder than the base.

[0031] The adjustable circular tube component includes a circular shell 61 movably connected to the outside of the composite protective outer layer 4, a telescopic bellows 62 is provided on one side of the circular shell 61, a circular shell 2 63 is provided on one side of the telescopic bellows 62, and a ball 64 is rotatably connected to the circular shell 61 and the telescopic bellows 62.

[0032] A groove 651 is formed on the inner wall of the circular shell 61 and the telescopic bellows 62 . A movable plate 652 is slidably connected to the interior of the groove 651 . The movable plate 652 is in a right-angled trapezoidal shape.

[0033] A slider 654 is slidably connected inside the groove 651 , a tension spring 655 is provided on one side of the slider 654 , and a driven plate 653 is provided on the other side of the slider 654 . The bottom surface of the driven plate 653 is inclined, and the inclined surface of the driven plate 653 fits with the inclined surface of the moving plate 652 .

[0034] A clamping block 656 is provided on one side of the driven plate 653, a clamping groove 659 is provided on the surface of the protrusion 5, and a deformable spring piece 657 is provided on one side of the movable plate 652. The deformable spring piece 657 is triangular. When the composite protective outer layer 4 is bent, its outer side is radially stretched and deformed to increase, thereby squeezing the deformable spring piece 657. A spring 658 is provided on one side of the elastic component 65.

[0035] Example 1: Aluminum alloy conductor unit 1: Alloy composition: 96.5% aluminum, 0.2% zirconium, 0.15% titanium, 0.08% magnesium, 0.07% cerium; Treatment process: 490℃ low-temperature solution treatment for 5h, water quenching, gradient aging at 150℃ / 4h, 210℃ / 3h, and 110℃ / 1.5h, pulse shot peening to form a 5μm nanocrystalline layer with a room temperature elongation of 32%; Insulation coating 11: Cross-linked polyethylene with a thickness of 1mm and a breakdown field strength of 38kV / mm; Spiral stranded layer 2: Stranded conductor unit 21 is made of 8 strands of aluminum alloy conductors twisted at a gradient angle of 15° inner layer - 25° outer layer; Variable pitch stranded restraint belt 22 uses aramid braided belt to maintain the inner pitch of 10 mm cable core diameter, that is, the outer layer pitch is 120mm; filling layer: silicone rubber with a Shore hardness of A45 and an elongation at break of 650%; gradient reinforced wrapping layer 3: spiral wrapping layer 31: inner layer aramid tape 60%, tensile strength 2800MPa, middle layer basalt tape 30%, temperature resistance 850℃, outer layer graphene composite tape 10%, coated with 6μm nano-silica coating; expanded perlite and water-absorbing resin composite particles 32: particle size 1mm, expands 220 times after absorbing water, and reaches saturation at 1.5mg / min; composite protective outer layer 4: ribbed strips 5 are graphene-reinforced polyethylene material, with a height of 0.4mm, a width of 1.2mm, a spacing of 2.5mm, and a hardness 25% higher than the matrix.

[0036] Test results: In the 180° high-frequency bending test of 100,000 times, the conductor did not break, the protective layer was not damaged, and the tensile force dispersion efficiency reached 62%; Core advantages: It did not break after 100,000 high-frequency bending tests, and the tensile force dispersion efficiency reached 62%. It is suitable for 15°-25° gradient twist angles and is wear-resistant and deformation-resistant.

[0037] Example 2: Aluminum alloy conductor unit 1: alloy composition: aluminum 96.8%, zirconium 0.22%, titanium 0.14%, magnesium 0.06%, cerium 0.08%; elongation after surface treatment is 33%, insulation coating layer 11 thickness is 1.2mm, corrosion resistance is improved by 40%; spiral stranded layer 2: the stranding pitch is adjusted to 9D for the inner layer and 13D for the outer layer; gradient reinforced winding layer 3: expanded perlite and water-absorbing resin composite particles 32 with a particle size of 0.8mm, swell 230 times when absorbed by water, and have a significant water-blocking effect; composite protective outer layer 4: the surface of the convex strips 5 is nickel-plated, the hardness is increased to 1.3 times that of the substrate, and the wear resistance is enhanced.

[0038] Test results: In a salt spray environment with 5% NaCl solution, 96h+ bending test with a radius of 4D, the cable insulation performance retention rate is 98%, and the tensile strength decreases by less than 5%. Core advantages: The performance is stable in a salt spray 96h+ bending test, with an insulation retention rate of 98% and a tensile strength decrease of less than 5%. The water-blocking particles are saturated at 1.5mg / min and are highly resistant to seawater corrosion.

[0039] Working principle: When the cable is subjected to tension or bending, the aluminum alloy conductor unit 1 is processed by a multi-element alloy formula and low-temperature solid solution, gradient aging, and pulse shot peening to improve the elongation of the surface nanocrystalline layer, thereby ensuring the tensile strength of the conductor core 12. In the spirally stranded layer 2, multiple aluminum alloy conductor units 1 are wound with a gradient stranding angle, and the variable pitch stranded constraint tape 22 maintains the interlayer pitch. The filling layer cooperates to buffer and disperse the axial bending tension to avoid concentrated force on the conductor core 12. The expanded perlite and water-absorbing resin composite particles 32 in the gradient reinforced wrapping layer 3 absorb water and swell, filling the gaps in the filling layer, combined with multi-layer composite tape wrapping, to construct a water-blocking barrier. The convex strips 5 of the composite protective outer layer 4 enhance the anti-slip and structural strength. In case of overload bending, the protective structure 6 cooperates with the adjustable round tube component and the ball 64, and the deformed spring 657 triggers the block 656 to lock, dispersing the bending stress. Verified by high-frequency bending tests, it achieves coordinated protection of tensile resistance and environmental resistance to ensure stable operation of the cable.

[0040] When the cable is in normal use, the user forms a rolling contact with the surface of the composite protective outer layer 4 through the ball 64, which makes the protective structure 6 able to slide freely along the axial direction of the cable, without affecting the normal bending operation of the cable and without generating additional resistance to the daily use of the cable. When the cable needs to be bent, the operator can easily move the round shell 1 61, the telescopic bellows 62 and the round shell 2 63 to the bending part of the cable, and use the flexible length adjustment feature of the telescopic bellows 62 to turn the round shell 2 63 so that the telescopic bellows 62 can be tightly wrapped around the outside of the cable bending part, thereby ensuring that the round shell 1 61, the telescopic bellows 62 and the round shell 2 63 are synchronized with the bending direction of the cable.

[0041] Once the cable is bent and overloaded, the outer side of the composite protective outer layer 4 at the bend will produce obvious radial tensile deformation due to the force. The extrusion force generated by the deformation will act on the deformation spring 657 in the elastic component 65. The deformation spring 657 will deform after being compressed. The deformation spring 657 squeezes the spring 658 to disperse the force, pushing the moving plate 652 to slide in the groove 651. Since the inclined surfaces of the moving plate 652 and the driven plate 653 fit each other, the sliding of the moving plate 652 will drive the driven plate 653 to move accordingly, thereby causing the slider 654 to overcome the tension of the tension spring 655 and produce displacement. , and eventually the block 656 on one side of the driven plate 653 is embedded in the groove 659 on the surface of the convex strip 5, quickly completing the locking action of the protective structure 6, which can effectively disperse the tensile force concentrated at the cable bending point to a larger range, significantly reducing the risk of cable breakage due to overload. Through the design of the ball 64 and the telescopic bellows 62, flexible adaptation of the cable bending is achieved, which not only meets the bending requirements of the cable under different working conditions, but also can be quickly positioned to the key protection position, thereby improving the stress dispersion efficiency at the cable bending point, effectively extending the service life of the cable, and greatly improving the reliability of the cable after installation.

[0042] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A high elongation aluminum alloy conductor reinforced tape wrapped cable, characterized in that: include: An aluminum alloy conductor unit is made of a five-element alloy of aluminum, zirconium, titanium, magnesium and cerium, and is subjected to low-temperature solid solution, gradient aging and pulse shot peening treatments to form a surface nanocrystalline layer with a room temperature elongation of ≥30%; the aluminum alloy conductor unit includes a conductor core, and the outside of the conductor core is wrapped with an insulating coating; the outside of the insulating coating is wrapped with a spirally twisted layer, and the spirally twisted layer is composed of two or more strands of the aluminum alloy conductor units spirally wound on the outside of the carbon fiber reinforced epoxy resin central core with a gradient increasing twist angle; the main body of the spirally twisted layer is composed of a twisted conductor unit; the outside of the twisted conductor unit is wrapped with a variable pitch twisted constraint tape to maintain a gradient twisted structure with an inner layer pitch of 8-10D and an outer layer of 12-15D, where D is the cable core diameter; the outside of the spirally twisted layer is wrapped with a gradient reinforcement wrapping layer, and the gradient reinforcement wrapping layer is formed by spirally wrapping aramid, basalt, and graphene nanosheet composite tapes with variable angles, and the spiral wrapping layer includes an inner layer wrapping The angles are 30°-40°, 45°-55° for the middle layer and 60°-70° for the outer layer; the interlayers of the spiral wrapping layer are filled with expanded perlite and water-absorbing resin composite particles, the expansion multiple is ≥200 times, and the water absorption rate is ≤5mg / min; the outer side of the gradient reinforced wrapping layer is wrapped with a composite protective outer layer, the composite protective outer layer is composed of a graphene low-density polyethylene composite layer, and the surface is provided with circumferentially distributed convex strips; the outer side of the composite protective outer layer is provided with convex strips, and the convex strips are used for anti-slip effect, and the outer side of the composite protective outer layer is movably connected to a protective structure, and the protective structure includes an adjustable circular tube component movably connected to the outer side of the composite protective outer layer, the inner side of the adjustable circular tube component is rotatably connected to a ball, and the ball is in contact with the surface of the composite protective outer layer, and the inner side of the adjustable circular tube component is provided with an elastic component, and the elastic component is used to disperse the tensile force when the cable is bent and overloaded, thereby preventing the cable from breaking.

2. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 1, characterized in that: The aluminum alloy conductor unit is covered with an insulating coating layer, which is made of a cross-linked polyethylene material, has a thickness of 0.8-1.2 mm, and a breakdown field strength of ≥35 kV / mm.

3. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 1, characterized in that: A filling layer is provided between the twisted conductor unit of the spirally twisted layer and the variable pitch twisted restraint belt. The filling layer is made of high elastic silicone rubber material with a Shore hardness of A40-50 and an elongation at break of ≥600%.

4. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 1, characterized in that: The spiral wrapping layer of the gradient reinforcement wrapping layer is composed of three layers of composite tape: inner layer: aramid fiber tape, accounting for 60% by volume, with a tensile strength of ≥2800MPa; Middle layer: basalt fiber belt, accounting for 30% by volume, high temperature resistance ≥800℃; outer layer: graphene nanosheet composite belt, accounting for 10% by volume, surface coated with 5-8μm nano-silica modified silicone rubber coating.

5. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 1, characterized in that: The expanded perlite and water-absorbing resin composite particles have a particle size of 0.5-1.5 mm and are composed of an expanded perlite core and an outer layer of highly water-absorbing resin. After being saturated with water, the volume expands by ≥200 times to form a water-blocking sealing layer.

6. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 1, characterized in that: The convex strips of the composite protective outer layer are evenly distributed along the cable axis, with a height of 0.3-0.5mm, a width of 1.0-1.5mm, and a spacing of 2-3mm. The convex strips are made of graphene-reinforced polyethylene material, and the hardness is 20-30% higher than that of the matrix.

7. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 1, characterized in that: The adjustable circular tube component includes a circular shell 1 movably connected to the outside of the composite protective outer layer, a telescopic bellows is provided on one side of the circular shell 1, a circular shell 2 is provided on one side of the telescopic bellows, and the ball is rotatably connected to the circular shell 1 and the telescopic bellows.

8. The high-elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 7, characterized in that: The inner walls of the circular shell 1 and the telescopic bellows are provided with grooves, and a movable plate is slidably connected inside the grooves, and the movable plate is in a right-angled trapezoid.

9. The high-elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 8, characterized in that: A slider is slidably connected inside the groove, a tension spring is provided on one side of the slider, and a driven plate is provided on the other side of the slider. The bottom surface of the driven plate is inclined, and the inclined surface of the driven plate fits with the inclined surface of the moving plate.

10. The high elongation aluminum alloy conductor reinforced tape wrapped cable according to claim 9, characterized in that: A clamping block is provided on one side of the driven plate, a clamping groove is provided on the surface of the convex strip, a deformable spring piece is provided on one side of the movable plate, and the deformable spring piece is triangular. When the composite protective outer layer is bent, its outer side is radially stretched and deformed to increase, thereby squeezing the deformable spring piece, and a spring is provided on one side of the elastic component.

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