CN214476472U - Flexible cable special for wind power generation - Google Patents

Abstract

The utility model discloses a special flexible cable of wind power generation, its technical scheme main points are: the cable comprises a plurality of cable cores, wherein the plurality of cable cores are mutually twisted, the cable cores sequentially comprise a cable core conductor, a fire-resistant mica tape, an inner shielding layer and an insulating layer from inside to outside, the insulating layer is arranged on the outer side of the inner shielding layer in an extruded mode, the inner shielding layer is shielding conductive paint, the shielding conductive paint is sprayed on the inner end of the insulating layer, a wrapping tape layer is wrapped on the outer side of each cable core, a filler is filled in a gap between the wrapping tape layer and each cable core, the outer shielding layer is arranged on the outer side of the wrapping tape layer, the outer shielding layer is formed by mixing and weaving tinned copper wires and aluminum foil composite tapes, an armor layer is arranged on the outer side of the outer shielding layer, a sheath layer is extruded on the outer side of the armor layer, an anti-corrosion coating is coated on the outer side of the sheath layer, and the anti-corrosion coating is high chlorinated polyethylene anti-corrosion coating; the utility model provides a current wind energy cable shield effect poor and the not good problem of corrosion resisting property.

Description

Flexible cable special for wind power generation

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to special flexible cable of wind power generation.

Background

The wind energy cable is mainly used for connecting wires of fans, has a very severe use environment, and not only has excellent electrical performance and torsion resistance, but also has the characteristics of excellent wear resistance, cold resistance, oil resistance, water resistance, aging resistance, high waterproofness, moisture permeability, wind resistance, weather resistance, bacteria resistance, mildew resistance, environmental protection and the like. At present, most of flexible cables used in wind driven generators are common flexible cables, the harsh requirements of the cable use environment cannot be completely met, quality problems such as core breakage, cracking and the like are easy to occur, the service life of the cables is short, and the efficiency of a fan system is influenced; therefore, the torsion-resistant flexible cable for wind power generation is researched and developed, specialization and serialization of the torsion-resistant flexible cable are promoted, long-term stable operation of the wind power cable is ensured, and the torsion-resistant flexible cable has positive social progress significance and economic development prospect.

The existing wind energy cable has poor shielding effect, and electromagnetic interference is sometimes generated when the existing wind energy cable is actually applied to electronic equipment, so that the normal use of the cable is influenced; meanwhile, the wind energy cable has a very severe service environment, and the cable is easy to corrode after long-term use due to poor corrosion resistance, so that the service life of the cable is shortened.

SUMMERY OF THE UTILITY MODEL

To the problem of mentioning in the background art, the utility model aims at providing the special flexible cable of wind power generation to solve the current wind energy cable shielding effect that mentions in the background art poor and the not good problem of corrosion resisting property.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the flexible cable special for wind power generation comprises a plurality of cable cores which are twisted with each other, the cable core sequentially comprises a cable core conductor, a fire-resistant mica tape, an inner shielding layer and an insulating layer from inside to outside, the insulating layer is extruded and coated on the outer side of the inner shielding layer, the inner shielding layer is shielding conductive paint, the shielding conductive paint is sprayed at the inner end of the insulating layer, a wrapping tape layer is wrapped on the outer side of the cable core, a gap between the wrapping band layer and the cable core is filled with filler, the outer side of the wrapping band layer is provided with an outer shielding layer, the outer shielding layer is formed by mixing and weaving tinned copper wires and aluminum foil composite tapes, the armor layer is arranged on the outer side of the outer shielding layer, the armor is characterized in that a sheath layer is extruded on the outer side of the armor layer, an anticorrosive coating is coated on the outer side of the sheath layer, and the anticorrosive coating is high chlorinated polyethylene anticorrosive paint.

Furthermore, the cable core conductor is formed by twisting a plurality of strands of tinned copper wires and tinned nickel wires in a composite manner.

By adopting the technical scheme, the cable core can be ensured to have good conductivity.

Furthermore, the insulating layer is made of cross-linked polyethylene materials in an extrusion wrapping mode.

By adopting the technical scheme, the insulating layer is made of the cross-linked polyethylene material, so that the cable cores have a good electric insulating effect, the cross-linked polyethylene material can be used at 90 ℃ for a long time, the heat-resistant temperature during short circuit can reach 250 ℃ at most, and carbon dioxide and water are generated by the cross-linked polyethylene once the cable burns, so that the cable has the characteristics of no halogen and low smoke.

Furthermore, the wrapping tape layer is formed by wrapping polytetrafluoroethylene raw material tapes.

By adopting the technical scheme, the polytetrafluoroethylene raw material tape has the characteristics of good corrosion resistance and high temperature resistance, and is good in self-adhesion and fitting performance and good in sealing performance.

Further, the filler is fireproof daub.

Through adopting above-mentioned technical scheme, the fire prevention daub fills in cable core and around the gap department between the band layer as the filler, can play fixed spacing effect to the cable core, avoids the cable core to take place to rock, and the while fire prevention daub has good fire behavior, has improved the fire behavior of cable.

Furthermore, the armor layer is a galvanized steel wire braid layer, and the armor layer is two-layer.

Through adopting above-mentioned technical scheme, can play good support, the effect of protection for the cable.

Further, the sheath layer is a crosslinked polyethylene sheath.

By adopting the technical scheme, the cross-linked polyethylene sheath has the comprehensive properties of good mechanical property, environmental stress cracking resistance, chemical corrosion resistance, temperature resistance, creep resistance, electrical property and the like, and the temperature resistance grade is obviously improved.

To sum up, the utility model discloses mainly have following beneficial effect:

1. the utility model discloses a, be provided with the internal shield layer through the inside at every solitary cable core, the effectual overall structure who has protected the cable does not receive destruction and does not receive electromagnetic interference, is provided with the external shield layer in the outer end around band layer, has further improved the interference killing feature of cable, has guaranteed the normal use of cable.

2. The utility model discloses a, through the outer end coating at the restrictive coating have anticorrosive coating, anticorrosive coating is highly chlorinated polyethylene anticorrosive coating, and highly chlorinated polyethylene anticorrosive coating has good anticorrosive, weatherability, can improve the anticorrosive ability of cable effectively, improves the life of cable.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a cable core; 101. a cable core conductor; 102. fire-resistant mica tapes; 103. an inner shield layer; 104. an insulating layer; 2. wrapping a belt layer; 3. a filler; 4. an outer shield layer; 5. an armor layer; 6. a sheath layer; 7. and (4) an anticorrosive coating.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, the flexible cable specially used for wind power generation comprises a plurality of cable cores 1, the plurality of cable cores 1 are twisted with each other, the cable cores 1 sequentially comprise a cable core conductor 101, a fire-resistant mica tape 102, an inner shielding layer 103 and an insulating layer 104 from inside to inside, the outer side of the inner shielding layer 103 is extruded and wrapped with the insulating layer 104, the inner shielding layer 103 is shielding conductive paint, the shielding conductive paint is sprayed at the inner end of the insulating layer 104 or at the outer end of the fire-resistant mica tape 102, the outer side of the cable core 1 is wrapped with a wrapping tape layer 2, a gap between the wrapping tape layer 2 and the cable core 1 is filled with a filler 3, the outer side of the wrapping tape layer 2 is provided with an outer shielding layer 4, the outer shielding layer 4 is formed by mixing and weaving of tinned copper wires and an aluminum foil composite tape, the outer side of the outer shielding layer 4 is provided with an armor layer 5, the outer side of the armor layer 5 is extruded and wrapped with a sheath layer 6, the outer side of the sheath layer 6 is coated with an anticorrosive coating 7, the anti-corrosion coating 7 is a high chlorinated polyethylene anti-corrosion coating.

Referring to fig. 1, the cable core conductor 101 is formed by twisting a plurality of strands of tin-plated copper wires and tin-plated nickel wires in a composite bundle.

Referring to fig. 1, the insulating layer 104 is extruded from a cross-linked polyethylene material.

Referring to fig. 1, the wrapping tape layer 2 is formed by wrapping polytetrafluoroethylene raw material tapes.

Referring to fig. 1, the filler 3 is a fire-retardant mastic.

Referring to fig. 1, the armor layer 5 is a galvanized steel wire braid layer, and the armor layer 5 is two layers.

Referring to fig. 1, the sheath layer 6 is a crosslinked polyethylene sheath.

The utility model discloses when using, through being provided with inner shield layer 103 in every solitary cable core 1's inside, inner shield layer 103 is the shielding conductive paint, the shielding conductive paint is a paint that can be used for the spraying, can play electrically conductive effect after the dry film that forms, thereby have the function of shielding electromagnetic wave interference, the spraying conductive paint has solved because of doing the metal shielding cover and has received the restriction of space restriction, operation, cost pressure, the effectual overall structure who protects the cable is not destroyed and does not receive electromagnetic interference, be provided with outer shield layer 4 around the outer end of band layer 2, outer shield layer 4 adopts tinned copper wire and aluminium foil complex tape to mix and weave and form, the interference killing feature of cable has further been improved, the normal use of cable has been guaranteed; the outer end of the sheath layer 6 is coated with the anticorrosive coating 7, the anticorrosive coating 7 is high chlorinated polyethylene anticorrosive coating, a film forming substance of the high chlorinated polyethylene anticorrosive coating has chemical inertia, and the high chlorinated polyethylene anticorrosive coating is flame-retardant, good in corrosion resistance and sealing property, good in resistance to atmosphere, moisture and petroleum, excellent in outdoor weather resistance, tough in film, good in temperature resistance, mildew-proof and strong in adhesive force, can effectively improve the anticorrosive capacity of a cable, and prolongs the service life of the cable.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. Special flexible cable of wind power generation, including many cable cores (1), its characterized in that: the cable comprises a plurality of cable cores (1) which are mutually twisted, wherein the cable cores (1) sequentially comprise a cable core conductor (101), a fire-resistant mica tape (102), an inner shielding layer (103) and an insulating layer (104) from inside to outside, the insulating layer (104) is arranged on the outer side of the inner shielding layer (103) in a squeezing mode, the inner shielding layer (103) is shielding conductive paint, the shielding conductive paint is sprayed on the inner end of the insulating layer (104), a wrapping tape layer (2) is wound on the outer side of the cable cores (1), a filler (3) is filled in a gap between the wrapping tape layer (2) and the cable cores (1), an outer shielding layer (4) is arranged on the outer side of the wrapping tape layer (2), the outer shielding layer (4) is formed by mixing a tinned copper wire and an aluminum foil composite tape, and an armor layer (5) is arranged on the outer side of the outer shielding layer (4), the armor is characterized in that a sheath layer (6) is extruded on the outer side of the armor layer (5), an anticorrosive coating (7) is coated on the outer side of the sheath layer (6), and the anticorrosive coating (7) is a high chlorinated polyethylene anticorrosive paint.

2. The flexible cable dedicated to wind power generation according to claim 1, wherein: the cable core conductor (101) is formed by twisting a plurality of strands of tinned copper wires and tinned nickel wires in a composite manner.

3. The flexible cable dedicated to wind power generation according to claim 1, wherein: the insulating layer (104) is made of cross-linked polyethylene materials in an extrusion wrapping mode.

4. The flexible cable dedicated to wind power generation according to claim 1, wherein: the winding band layer (2) is formed by winding polytetrafluoroethylene raw material belts.

5. The flexible cable dedicated to wind power generation according to claim 1, wherein: the filler (3) is fireproof daub.

6. The flexible cable dedicated to wind power generation according to claim 1, wherein: the armor layer (5) is a galvanized steel wire braid layer, and the armor layer (5) is two layers.

7. The flexible cable dedicated to wind power generation according to claim 1, wherein: the sheath layer (6) is a cross-linked polyethylene sheath.

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