CN215577795U

CN215577795U - Tensile light flexible cable for wind power generation

Info

Publication number: CN215577795U
Application number: CN202121506128.7U
Authority: CN
Inventors: 田守纪; 张鹏飞; 李金堂; 程伟; 余德平
Original assignee: Zhejiang Wanma Co Ltd
Current assignee: Zhejiang Wanma Co Ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-01-18
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a tensile light flexible cable for wind power generation, which consists of a cable conductor formed by stranding a plurality of 0.5mm aluminum alloy wires, an insulating material made of a TPE material, a KEVLAR fiber rope stranded into a strand, and a KEVLAR tensile reinforcement layer woven outside a cable core. And simultaneously, the reinforced layer is externally extruded with an ultraviolet-resistant and oil-resistant TPE sheath. The cable is light in weight, convenient to install and low in cost, the aluminum alloy cable can simultaneously meet the requirements of tensile strength, wear resistance, ultraviolet aging resistance, torsion resistance, oil resistance and flexibility of the cable, and conductors, insulation, filling, weaving materials and an outer sheath in the cable structure are all made of materials which are light in specific gravity and environment-friendly, so that the requirements of lightness and environment friendliness of the cable are met.

Description

Tensile light flexible cable for wind power generation

Technical Field

The utility model relates to a cable, in particular to a tensile light flexible cable for wind power generation.

Background

Wind energy is gradually favored by countries around the world as a renewable resource, and wind power generation is becoming the fastest growing energy project in the world. China has rich wind energy reserves and wide distribution, and has wide market prospect for developing wind power generation. With the proposition of national targets of 'carbon neutralization' and 'carbon peak reaching', wind power generation is a pollution-free clean energy which is highly appreciated, and although the wind power industry in China is rapidly developed in recent years and is supported by the great strength of China, a certain gap exists compared with the developed countries abroad. As a matching product of wind power generation, namely a cable for wind power generation, the cable has high requirements due to the special use environment of wind power generation. The cable for wind power generation has to have excellent electrical performance and certain mechanical performance, and the cable for wind power generation also needs to have strong tensile strength, good flexibility and bending resistance, light weight, wear resistance, torsion resistance, oil resistance, weather aging resistance, environmental protection and other characteristics. The cable for wind power generation in the prior art is heavier in weight, and cannot meet the requirement of portable operation and installation of the cable.

For example, a "sea floating type wind power generation cable" disclosed in chinese patent literature, which is under the publication number CN201804620U, includes a sea floating type wind power generation cable having a waterproof outer sheath, a braided reinforcement layer attached to the inner side of the waterproof outer sheath, a foamed liner layer filled in the braided reinforcement layer, a wire core placed in the foamed liner layer, and an insulation layer covering the wire core; the sea floating type wind power generation cable can float on the water surface by filling the foaming lining layer inside, and is convenient for the operation of installation, laying, moving, maintenance and the like of the cable. However, the cable is sea floating, so that the installation and the laying are inconvenient; the movement and the maintenance are inconvenient, and the cost is high; and the weight of the cable is heavier, the fixed installation is very difficult and can cause the incident, therefore need a light cable of a portability guarantee the light installation of cable.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at the problem that the cable for wind power generation in the prior art has heavier weight and can not meet the requirement of light operation and installation of the cable; the utility model provides a light-duty flexible cable for wind power generation of tensile, it forms through many aluminum alloy transposition, adopt the TPE to be insulating, fill the KEVLAR fiber rope of stranding into the thigh as the tensile device during stranding, KEVLAR tensile enhancement layer is woven outward to the cable core, and the outer crowded resistant oily TPE sheath of ultraviolet resistance of package of enhancement layer solves wind power generation cable weight heavier, the problem of difficult installation, and the tensile is wear-resisting simultaneously, reduce cost, and the environmental protection is light.

The technical problem of the utility model is mainly solved by the following technical scheme:

the utility model provides a light-duty flexible cable for wind power generation of tensile which characterized in that: the cable comprises a plurality of strands of identical cables, and a cable core of each cable is formed by stranding a plurality of 0.50mm aluminum alloy conductors; an insulating layer is arranged outside the cable core; the strand cables are all wrapped inside the TPE sheath; stranded KEVLAR filling is arranged in the gaps of the cables in the TPE sheath; and reinforcing layers are arranged on the inner side of the TPE sheath and outside the doubled KEVLAR filling layer. The light aluminum alloy is used as the cable core material, so that the weight of the cable is reduced, the cost is reduced, and the environment-friendly light TPE material is used, so that the cable is light and environment-friendly.

Preferably, the insulating layer is made of TPE materials which are oil-resistant, soft, flexible and torsion-resistant.

Preferably, the talcum powder is fully coated on the wire core of the insulating layer, so that the slippage of the cable in the bending and twisting processes is increased, and the friction force between the insulating wire cores is reduced, thereby greatly reducing the risk of breakage of the insulating wire cores in the back-and-forth bending and twisting processes.

Preferably, the reinforcing layer is a KEVLAR braided reinforcing net, so that the cable core is more compact, and the overall tensile resistance of the cable is increased again.

Preferably, the weaving density of the reinforcing mesh is between 40% and 50%, so that the tensile strength of the cable is enhanced, the compactness of the cable is improved, and the adhesion force is also improved for a subsequent extrusion process.

Preferably, the TPE sheath is extruded TPE in an extrusion mode. When guaranteeing the cable rounding, because extrusion formula sheath and braided wire mesh are combined closely has increased the whole resistant crooked, the resistant commentaries on classics performance of twisting of cable, has increased cable resistant oily, ageing resistance, resistant torsion, soft resistant bending property simultaneously.

Preferably, the tensile strength of the cable monofilament is not less than 10Mpa,

the utility model has the beneficial effects that:

1. the aluminum alloy with light weight is stranded into the cable core, the aluminum alloy conductor is annealed by an aging annealing furnace after being stranded, the tensile strength of a monofilament of the annealed conductor is not less than 10Mpa, the breaking elongation of the monofilament is not less than 98%, the conductor is only 1/3 of copper in weight, the weight is light, the installation is convenient, and the cost is low.

2. The cable is filled with folded KEVLAR, and has the advantages of tensile strength, wear resistance, ultraviolet aging resistance, torsion resistance, oil resistance and easy bending.

3. The conductor, the insulation, the filling, the weaving material and the outer sheath in the cable structure are all materials with relatively light specific gravity and environmental protection, and the requirements of light weight and environmental protection of the cable are met.

Drawings

FIG. 1 is a cross-sectional view of a cable;

in the figure: 1. a plurality of 0.50mm aluminum alloy conductors; 2, insulating TPE; 3. stock-combining KEVLAR filling; KEVLAR weaves reinforcement layers; 5, TPE sheath.

Detailed Description

It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.

As shown in the figure, the tensile light flexible cable for wind power generation comprises a plurality of strands of identical cables, wherein cable cores of the cables are formed by stranding a plurality of 0.50mm aluminum alloy conductors; the aluminum alloy conductor is stranded and then annealed by an aging annealing furnace, and the annealed conductor has the monofilament tensile strength of not less than 10Mpa, the monofilament elongation at break of not less than 98 percent, the weight of about 1/3 which is only copper, light weight and low cost. An insulating layer is arranged outside the cable core, and oil-resistant soft TPE is adopted for insulation, so that the TPE material can meet the requirements of no cracking and softness of insulation at the temperature of minus 50 ℃; talcum powder is fully paintd to the sinle silk of insulating layer, has increased the slip of cable in bending, torsion process, has reduced the frictional force between the insulating sinle silk, ensures that the sinle silk does not fracture. A plurality of strand cables are wrapped inside the TPE sheath; inside the TPE sheath, the space of cable is provided with the KEVLAR that doubles and packs, and the stranding packing adopts the KEVLAR that doubles to fill, and KEVLAR is when having higher tensile strength, and extremely soft, and it is filled with certain pitch to become the cable simultaneously, so the cable is when pulling the power, and the main pulling force of cable has been born to the KEVLAR who fills, and the stranding pitch ratio control is within 12 times, and the lapping is not gone up behind the stranding, TPE sheath inboard, and the KEVLAR that doubles is filled the layer outward, the enhancement layer is KEVLAR and weaves the reinforcing mesh, and its density of weaving control is between 40% -50%, and this netted braided structure has increased the compactness of cable when strengthening cable tensile strength, has also increased the adhesive force for the later process of extruding, because the sheath adopts resistant oil resistance anti ultraviolet ageing soft TPE, has increased cable resistant oily, ageing resistance, twist, soft bending resistance ability.

Claims

1. The utility model provides a light-duty flexible cable for wind power generation of tensile which characterized in that: the cable comprises a plurality of strands of identical cables, and a cable core of each cable is formed by stranding a plurality of 0.50mm aluminum alloy conductors (1); an insulating layer is arranged outside the cable core; the strand cables are all wrapped inside the TPE sheath (5); stranded KEVLAR filling (3) is arranged in the TPE sheath (5) and in the gap of the cable; and reinforcing layers are arranged on the inner side of the TPE sheath (5) and outside the stranded KEVLAR filling layer (3).

2. The tensile lightweight flexible cable for wind power generation according to claim 1, wherein: the insulating layer adopts the TPE material.

3. The tensile light flexible cable for wind power generation according to claim 2, wherein: and the wire core of the insulating layer is fully coated with talcum powder.

4. The tensile lightweight flexible cable for wind power generation according to claim 1, wherein: the reinforcing layer is a KEVLAR woven reinforcing net.

5. The tensile light flexible cable for wind power generation according to claim 4, wherein: the reinforcing mesh has a weaving density of between 40% and 50%.

6. The tensile lightweight flexible cable for wind power generation according to claim 1, wherein: the TPE sheath (5) is TPE extruded in an extrusion type extrusion mode.

7. The tensile lightweight flexible cable for wind power generation according to claim 1, wherein: the tensile strength of the single wires of the cable core is not less than 10 Mpa.