Low-voltage high-flexibility high-protection distortion-resistant aluminum alloy flexible cable for wind power generation

Abstract

The utility model belongs to the technical field of cables, and discloses a low-voltage high-flexibility high-protection torsion-resistant aluminum alloy flexible cable for wind power generation, which comprises a conductor cable core, the conductor cable core is made of aluminum alloy, the conductor cable core is coated with an insulating layer, the insulating layer is made of ethylene propylene rubber, the inner wall of the insulating layer is connected with a torsion-resistant layer in a bonding manner, and the torsion-resistant layer is made of aluminum alloy. The outer part of the insulating layer is coated with a sheath layer, the sheath layer is made of chlorinated polyethylene, and a plurality of reinforcing ribs are embedded between the sheath layer and the insulating layer in an array manner. Through the arrangement of the torsion-resistant layer and the reinforcing ribs, the flexibility and the torsion-resistant performance of the cable are improved, the stability of the cable core is reliably guaranteed, and the use effect is good.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and more specifically, to a low-voltage, high-flexibility, high-protection, torsion-resistant aluminum alloy soft cable for wind power generation. Background Art

[0002] The international community's emphasis on energy conservation, environmental protection and sustainable development concepts, as well as the policy inclination, have boosted the rapid development of the clean energy power generation market. Wind power generation is the fastest growing clean energy source in the world, with a rapid increase in installed capacity, ushering in a new round of development peak.

[0003] Wind power generation twist-resistant flexible cable is an important component of wind turbines. At present, wind power generation projects at home and abroad widely use wind turbines with a single unit capacity of 2MW and 4MW. The electricity generated by them is transmitted from the nacelle to the tower barrel fixed section cable by a wind power generation twist-resistant flexible cable with a rated voltage of less than 1.8 / 3kV. Since this section of cable is laid vertically in the air, and wind turbines are mostly used in areas with harsh climatic conditions such as high altitude, low temperature, and corrosiveness, and it will twist frequently according to the change of wind direction and the angle adjustment of the wind turbine, the twist-resistant flexible cable for wind power generation must not only meet the performance of ordinary cables, but also have higher mechanical strength, better bending performance, excellent twist resistance, and reliable weather resistance and low temperature resistance. Utility Model Content

[0004] In order to solve the above problems, the present application provides a low-voltage, high-flexibility, high-protection, torsion-resistant aluminum alloy soft cable for wind power generation.

[0005] The present application provides a low-voltage, high-flexibility, high-protection, torsion-resistant aluminum alloy flexible cable for wind power generation that adopts the following technical solution:

[0006] A low-voltage, high-flexibility, high-protection, torsion-resistant aluminum alloy soft cable for wind power generation, comprising a conductor cable core, the conductor cable core is made of aluminum alloy, the outside of the conductor cable core is coated with an insulating layer, the insulating layer is made of ethylene propylene rubber, the inner wall of the insulating layer is bonded with an anti-torsion layer, the outside of the insulating layer is coated with a sheath layer, the sheath layer is made of chlorinated polyethylene, and a plurality of reinforcing ribs are embedded in an array between the sheath layer and the insulating layer.

[0007] Furthermore, the maximum diameter of a single wire of the conductor cable core is 0.51 mm.

[0008] Furthermore, the thickness of the insulating layer is 2-3 mm.

[0009] Furthermore, the thickness of the sheath layer is 2-4 mm.

[0010] Furthermore, the anti-torsion layer is a nylon fiber braided mesh.

[0011] Furthermore, the reinforcing ribs are formed by twisting a plurality of aramid yarns into bundles.

[0012] In summary, the present application includes at least one of the following beneficial technical effects:

[0013] The present application improves the flexibility and twisting resistance of the cable by setting up the torsion-resistant layer and the reinforcing ribs, and also reliably ensures the stability of the cable core, thereby achieving good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of this application;

[0015] Figure 2 This is a cross-sectional schematic diagram of the present application.

[0016] Description of the numbers in the figure:

[0017] 1. Conductor cable core; 2. Insulation layer; 3. Torsion-resistant layer; 4. Sheath layer; 5. Reinforcement ribs. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] Embodiment 1:

[0022] The present application is further described in detail below in conjunction with the accompanying drawings.

[0023] The embodiment of the present application discloses a low-voltage, high-flexibility, high-protection, torsion-resistant aluminum alloy soft cable for wind power generation, comprising a conductor cable core 1, the conductor cable core 1 is an aluminum alloy, the outside of the conductor cable core 1 is coated with an insulating layer 2, the insulating layer 2 is ethylene-propylene rubber, the inner wall of the insulating layer 2 is bonded and connected with an anti-torsion layer 3, the outside of the insulating layer 2 is coated with a sheath layer 4, the sheath layer 4 is chlorinated polyethylene, and a plurality of reinforcing ribs 5 are embedded in an array between the sheath layer 4 and the insulating layer 2.

[0024] See also Figure 1-2 As a further preferred embodiment of this embodiment, the maximum diameter of the single wire of the conductor cable core 1 is 0.51 mm, the thickness of the insulating layer 2 is 3 mm, and the thickness of the sheath layer 4 is 4 mm.

[0025] Preferably, the anti-torsion layer 3 is a nylon fiber woven mesh.

[0026] Preferably, the reinforcing ribs 5 are formed by twisting a plurality of aramid yarns into bundles.

[0027] The cable samples were manufactured by adopting the technical solution of the present application and tested. The tensile strength of the insulation layer before aging was not less than 4.2N / mm 2 , elongation at break is not less than 200%; after air box aging, the change rate of tensile strength is not more than ±30%, and the change rate of elongation at break is not more than ±30%. The maximum elongation under hot extension test load is 175%, and the maximum elongation after cooling is 15%;

[0028] The mechanical and physical properties of the finished cable sheath layer meet the requirements in the following table;

[0029]

[0030]

[0031] The finished cable is subjected to a torsional performance test of not less than 10,000 cycles at room temperature; a torsional performance test of not less than 2,000 cycles at extreme temperature (-40°C), a torsional performance test of not less than 10,000 cycles at high temperature (+60°C), and a torsional performance test of not less than 10,000 cycles under load; at a temperature of -25±2°C, the finished cable specimen is bent 180° at 4 to 5 times the outer diameter of the cable, and there are no cracks in the cable insulation layer and sheath layer.

[0032] According to the use characteristics of the torsion-resistant soft cable used in the cabin of a wind turbine, the cable prepared in this application has the characteristics of resistance to high and low temperatures, corrosion, salt spray, flame retardancy, and torsion resistance, and its mechanical and electrical properties meet the use requirements.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low-voltage, high-flexibility, high-protection, torsion-resistant aluminum alloy soft cable for wind power generation, comprising a conductor cable core (1), characterized in that: The conductor cable core (1) is made of aluminum alloy, the conductor cable core (1) is coated with an insulating layer (2) on the outside, the insulating layer (2) is made of ethylene propylene rubber, the inner wall of the insulating layer (2) is bonded with an anti-torsion layer (3), the insulating layer (2) is coated with a sheath layer (4) on the outside, the sheath layer (4) is made of chlorinated polyethylene, and a plurality of reinforcing ribs (5) are arranged in an array and embedded between the sheath layer (4) and the insulating layer (2).

2. According to claim 1, a low-voltage, high-flexibility, high-protection, twist-resistant aluminum alloy soft cable for wind power generation, characterized in that: The maximum diameter of a single wire of the conductor cable core (1) is 0.51 mm.

3. The low-voltage, high-flexibility, high-protection, twist-resistant aluminum alloy soft cable for wind power generation according to claim 2 is characterized by: The thickness of the insulating layer (2) is 2-3 mm.

4. The low-voltage, high-flexibility, high-protection, twist-resistant aluminum alloy soft cable for wind power generation according to claim 3 is characterized by: The thickness of the sheath layer (4) is 2-4 mm.

5. The low-voltage, high-flexibility, high-protection, twist-resistant aluminum alloy soft cable for wind power generation according to claim 1 is characterized by: The anti-torsion layer (3) is a nylon fiber braided mesh.

6. The low-voltage, high-flexibility, high-protection, twist-resistant aluminum alloy soft cable for wind power generation according to claim 1, characterized in that: The reinforcing ribs (5) are formed by twisting a plurality of aramid filaments into a bundle.

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