CN210535401U

CN210535401U - Bending-resistant flexible cable for extra-high voltage wind power generation

Info

Publication number: CN210535401U
Application number: CN201921800296.XU
Authority: CN
Inventors: 沈瑞中
Original assignee: Shenzhen Ruixingli Ind Co ltd
Current assignee: Shenzhen Ruixingli Ind Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-05-15
Anticipated expiration: 2029-10-24

Abstract

The utility model discloses an extra-high voltage wind power generation's resistant flexible cable that bends, including extra-high voltage cable main part, the outside of protective sheath layer is provided with fireproof coating layer, just the inboard of protective sheath layer is provided with halogen-free environmental protection flame retardant material, halogen-free environmental protection flame retardant material's inboard is provided with the band layer, the inboard of band layer is provided with the metallic shield insulating layer, the inboard central point of metallic shield insulating layer puts and is provided with wire rope, evenly be provided with four fibre filling cores and four soft copper wires between wire rope and the metallic shield insulating layer. The utility model is provided with the fireproof coating layer and the halogen-free environment-friendly flame retardant material, which can enhance the fire resistance of the wind power generation cable and prevent the internal combustion of the wind power generation cable; meanwhile, the soft copper wire and the steel wire rope are adopted, so that the anti-distortion performance of the wind power generation cable can be enhanced, and the requirements of long service life, reduction of failure shutdown rate and reduction of maintenance cost are easily met.

Description

Bending-resistant flexible cable for extra-high voltage wind power generation

Technical Field

The utility model belongs to the technical field of wind power generation cable, concretely relates to special high voltage wind power generation's resistant flexible cable that bends.

Background

At present, the special cable for wind power generation in China is still in a starting stage. Because the environment of wind power generation is severe, the service life of a fan is long, the cable continuously rotates along with the fan, and the performance requirement on the cable is high, the wind energy cable in China always depends on import and is expensive, the research and development of the domestic wind energy cable are urgent, and the localization road of the high-end wind energy cable is far. The special cable for wind power generation is required to have high mechanical strength, torsion resistance (flexibility), vibration resistance and oil resistance due to long-term operation outdoors, vertical suspension laying, frequent torsion (torsion resistance with one time around each positive and negative side and no less than 3600 times), oil stain contact (partial), seawater corrosion resistance (special environment), and low temperature resistance (-40 ℃) for the cable used in cold regions. Due to the characteristics of severe environment, long service life of the fan, continuous rotation of the cable along with the fan and the like of wind power generation, the requirement on the performance of the cable is high, and the wind power generation system depends on import in a large quantity all the time.

The existing wind power generation cable has the defects of poor fire resistance and poor distortion resistance, so that the requirements of long service life, reduction of failure shutdown rate and reduction of maintenance cost are difficult to achieve. Therefore, the flexible bending-resistant cable for the extra-high voltage wind power generation is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extra-high voltage wind power generation's resistant flexible cable that bends to it has poor fire resistance to propose current wind power generation cable in the above-mentioned background art to solve, and the warp resistance can be poor not enough, leads to being difficult to reach the problem that uses long-life and reduce the requirement of trouble stop rate, reduction maintenance cost.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an extra-high voltage wind power generation's resistant flexible cable that bends, includes extra-high voltage cable main part, extra-high voltage cable main part is including preventing the restrictive coating, the outside of preventing the restrictive coating is provided with fireproof paint layer, just the inboard of preventing the restrictive coating is provided with halogen-free environmental protection flame retardant material, halogen-free environmental protection flame retardant material's inboard is provided with the band layer, the inboard on band layer is provided with the metallic shield insulating layer, the inboard central point of metallic shield insulating layer puts and is provided with wire rope, evenly be provided with four fibre filling cores and four soft copper wires between wire rope and the metallic shield insulating layer, every the outside of soft copper wire all is provided with the EPT rubber insulating layer.

Preferably, the protective sleeve layer is made of thermoplastic elastomer materials, and the thickness of the protective sleeve layer is 1.0-1.5 cm.

Preferably, the coating thickness of the fireproof coating layer is 0.2 mm.

Preferably, the fiber filling cores and the soft copper wires are uniformly distributed in the circumferential direction, and each fiber filling core is located between two adjacent soft copper wires.

Preferably, the metal shielding insulating layer is made of ethylene propylene rubber material, and the thickness of the metal shielding insulating layer is 0.5-1.0 cm.

Preferably, the steel wire rope comprises a stress-relieving regular stranded steel wire rope, and a spiral support is sleeved outside the stress-relieving regular stranded steel wire rope.

Preferably, the wrapping band layer and the metal shielding insulating layer are fixed by gluing, and the wrapping band layer is of a tubular structure.

Preferably, a filling layer is arranged at the gap among the fiber filling core, the steel wire rope and the ethylene propylene rubber insulating layer, and the filling layer is made of magnesium hydroxide powder.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model is provided with the fireproof coating layer and the halogen-free environment-friendly flame retardant material, which can enhance the fire resistance of the wind power generation cable and prevent the internal combustion of the wind power generation cable; meanwhile, the soft copper wire and the steel wire rope are adopted, so that the anti-distortion performance of the wind power generation cable can be enhanced, and the requirements of long service life, reduction of failure shutdown rate and reduction of maintenance cost are easily met.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of part A of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

in the figure: 1. an extra-high voltage cable main body; 2. halogen-free environment-friendly flame-retardant materials; 3. a belting layer; 4. a metal shield insulating layer; 5. a fiber-filled core; 6. a wire rope; 7. a soft copper wire; 8. an ethylene propylene rubber insulating layer; 9. a fire retardant coating layer; 10. a protective sheath layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an extra-high voltage wind power generation's resistant flexible cable that bends, includes extra-high voltage cable main part 1, extra-high voltage cable main part 1 is including lag layer 10, the outside of lag layer 10 is provided with fireproof coating layer 9, just the inboard of lag layer 10 is provided with halogen-free environmental protection flame retardant material 2, the inboard of halogen-free environmental protection flame retardant material 2 is provided with band layer 3, the inboard of band layer 3 is provided with metallic shield insulating layer 4, the inboard central point of metallic shield insulating layer 4 puts and is provided with wire rope 6, evenly be provided with four fibre filling cores 5 and four soft copper wire 7 between wire rope 6 and the metallic shield insulating layer 4, every the outside of soft copper wire 7 all is provided with EP rubbers insulating layer 8.

The anti-sheath layer 10 is made of a thermoplastic elastomer material, the thickness of the anti-sheath layer 10 is 1.0-1.5cm, the coating thickness of the fireproof coating layer 9 is 0.2mm, the fiber filling cores 5 and the soft copper wires 7 are uniformly distributed in the circumferential direction, each fiber filling core 5 is positioned between two adjacent soft copper wires 7, the metal shielding insulating layer 4 is made of ethylene propylene rubber, the thickness of the metal shielding insulating layer 4 is 0.5-1.0cm, the steel wire rope 6 comprises a stress-relieving regular stranded steel wire rope, the outer sleeve of the stress-relieving regular stranded steel wire rope is provided with a spiral support, the band layer 3 and the metal shielding insulating layer 4 are fixed through gluing, the band layer 3 is of a tubular structure, and filling layers are arranged at gaps among the fiber filling cores 5, the steel wire rope 6 and the ethylene propylene rubber insulating layer 8, the filling layer is made of magnesium hydroxide powder.

It should be noted that, the utility model relates to a special high voltage wind power generation's resistant bent flexible cable, if:

fig. 1 is a schematic structural view of the present invention; FIG. 2 is an enlarged view of part A of the present invention; fig. 3 is a schematic cross-sectional view of the present invention. The utility model discloses when assembling, be equipped with the spiral at the overcoat of the formal stranded wire rope of stress relief and support, form wire rope 6 to use wire rope 6 as the center, adopt cable preparation technology progressively to wrap up soft copper wire 7, fibre filling core 5, metallic shield insulating layer 4, band layer 3 that have ethylene propylene rubber insulating layer 8, halogen-free environmental protection flame retardant material 2, lag layer 10, at last at lag layer 10's outside coating 0.2 mm's fireproof coating layer 9. The fireproof coating layer 9 and the protective cover layer 10 have the function of enhancing the fireproof capacity, and the fiber filling core 5 and the steel wire rope 6 have the function of enhancing the anti-distortion capacity.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an extra-high voltage wind power generation's resistant flexible cable that bends, includes extra-high voltage cable main part (1), its characterized in that: the ultra-high voltage cable is characterized in that the ultra-high voltage cable main body (1) comprises a protective sheath layer (10), a fireproof coating layer (9) is arranged on the outer side of the protective sheath layer (10), a halogen-free environment-friendly flame-retardant material (2) is arranged on the inner side of the protective sheath layer (10), a wrapping layer (3) is arranged on the inner side of the halogen-free environment-friendly flame-retardant material (2), a metal shielding insulating layer (4) is arranged on the inner side of the wrapping layer (3), a steel wire rope (6) is arranged at the center of the inner side of the metal shielding insulating layer (4), four fiber filling cores (5) and four soft copper wires (7) are uniformly arranged between the steel wire rope (6) and the metal shielding insulating layer (4), and each soft copper wire (7).

2. The flexible bend-resistant cable for extra-high voltage wind power generation according to claim 1, characterized in that: the protective sleeve layer (10) is made of thermoplastic elastomer materials, and the thickness of the protective sleeve layer (10) is 1.0-1.5 cm.

3. The flexible bend-resistant cable for extra-high voltage wind power generation according to claim 1, characterized in that: the coating thickness of the fireproof coating layer (9) is 0.2 mm.

4. The flexible bend-resistant cable for extra-high voltage wind power generation according to claim 1, characterized in that: the fiber filling cores (5) and the soft copper wires (7) are uniformly distributed in the circumferential direction, and each fiber filling core (5) is located between two adjacent soft copper wires (7).

5. The flexible bend-resistant cable for extra-high voltage wind power generation according to claim 1, characterized in that: the metal shielding insulating layer (4) is made of ethylene propylene rubber materials, and the thickness of the metal shielding insulating layer (4) is 0.5-1.0 cm.

6. The flexible bend-resistant cable for extra-high voltage wind power generation according to claim 1, characterized in that: the steel wire rope (6) comprises a stress-relieving regular stranded steel wire rope, and a spiral support is sleeved outside the stress-relieving regular stranded steel wire rope.

7. The flexible bend-resistant cable for extra-high voltage wind power generation according to claim 1, characterized in that: the wrapping tape layer (3) and the metal shielding insulating layer (4) are fixed through gluing, and the wrapping tape layer (3) is of a tubular structure.