CN216772884U - Special anti-freezing overhead insulated cable for wind power generation - Google Patents

Abstract

The utility model discloses a special anti-freezing overhead insulated cable for wind power generation, which has the technical scheme that: the cable comprises a plurality of cable cores, wherein the cable cores are mutually twisted, the cable core sequentially comprises a cable core conductor, a fire-resistant mica tape and an insulating layer from inside to outside, an inner fireproof layer is arranged outside the cable core, a wrapping tape layer is wrapped outside the inner fireproof layers, a filler is filled in a gap between the wrapping tape layer and the inner fireproof layer, a shielding layer is arranged outside the wrapping tape layer, an armor layer is arranged outside the shielding layer, fireproof paint is coated outside the armor layer, an outer fireproof layer is arranged outside the fireproof paint, the outer fireproof layer is formed by wrapping a low-smoke halogen-free flame-retardant tape, a cold-resistant protective layer is arranged outside the outer fireproof layer, a sheath layer is arranged outside the cold-resistant protective layer, and a plurality of tensile ropes are arranged inside the filler; the utility model has good flame retardance and cold resistance.

Description

Special anti-freezing overhead insulated cable for wind power generation

Technical Field

The utility model relates to the technical field of cables, in particular to a special anti-freezing overhead insulated cable for wind power generation.

Background

Along with the frequent occurrence of fire accidents, people continuously deepen understanding of the fire hazard risk of the electric wire and the cable, and related departments have higher and higher requirements on the performances of fire prevention, flame retardance and the like of the electric wire and the cable.

In industrial and mining enterprises in northern provinces of China, the environmental temperature can reach more than one hundred degrees when equipment operates in the daytime and works in winter, and a cable is in a cold environment with the temperature below zero dozens of degrees after the equipment stops operating in the evening.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems mentioned in the background technology, the utility model aims to provide the special anti-freezing overhead insulated cable for wind power generation, which has good flame retardance and cold resistance.

The technical purpose of the utility model is realized by the following technical scheme:

the anti-freezing aerial insulated cable special for wind power generation comprises a plurality of cable cores, wherein the cable cores are mutually twisted, the cable cores sequentially comprise a cable core conductor, a fire-resistant mica tape and an insulating layer from inside to outside, an inner fireproof layer is arranged on the outer side of the cable core, the inner fireproof layer is formed by wrapping a Kevlar tape, a plurality of wrapping tape layers are wrapped on the outer side of the inner fireproof layer, a filler is filled in a gap between the wrapping tape layers and the inner fireproof layer, the filler is cable fire-resistant mud, a shielding layer is arranged on the outer side of the wrapping tape layers, an armor layer is arranged on the outer side of the shielding layer, fireproof paint is coated on the outer side of the armor layer, an outer fireproof layer is arranged on the outer side of the fireproof paint, the outer fireproof layer is formed by wrapping a halogen-free low-smoke flame-resistant tape, and a cold-resistant protective layer is arranged on the outer side of the outer fireproof layer, the cold-resistant protective layer is made of methyl vinyl silicone rubber materials, a sheath layer is arranged on the outer side of the cold-resistant protective layer, and a plurality of tensile ropes are arranged inside the filler.

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 a good electric insulating effect is achieved between the cable cores, the cross-linked polyethylene is a flexible ultra-pure insulating material with high mechanical strength and good electric performance, has a high insulation resistance constant as the insulating material, can bear a high voltage level, and meanwhile ensures that the cable has excellent insulating property.

Furthermore, the wrapping tape layer is made of silicon rubber flame-retardant cloth.

By adopting the technical scheme, the silicon rubber flame-retardant cloth is halogen-free flame-retardant silicon rubber which has excellent performance and no pungent smell and is beneficial to environmental protection, and the flame retardance and fire resistance of the cable are effectively ensured.

Furthermore, the shielding layer is formed by mixing and weaving tinned copper wires and an aluminum foil composite tape.

By adopting the technical scheme, the shielding effect of the cable can be effectively improved, so that the anti-interference capability of the cable is improved.

Furthermore, the armor layer is formed by overlapping and lapping copper strips, and the lapping and lapping rate is not less than 30%.

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

Furthermore, the sheath layer is made of halogen-free low-smoke flame-retardant polyolefin sheath material.

By adopting the technical scheme, the high-quality halogen-free low-smoke flame-retardant polyolefin sheath material is adopted, so that the low-smoke halogen-free flame-retardant performance of the cable can be ensured.

In summary, the utility model mainly has the following beneficial effects:

1. the utility model discloses a, through set up interior flame retardant coating and outer flame retardant coating in the inside of cable, interior flame retardant coating is around the package for the kaffir belt, and outer flame retardant coating is around the package for there is not steamed low cigarette fire-retardant area to form, and the kaffir belt has splendid heat-resisting fire resistance, and meets fire and does not have the molten drop to produce, does not produce toxic gas, is good fire-retardant, refractory material, and the fire resistance of cable can be improved effectively in setting up like this; the filler is cable fireproof mud which is a putty-like flame-retardant material and has good flame-retardant and flame-blocking performances; the fireproof paint is coated on the outer side of the armor layer, and the fireproof paint has flame retardancy or incombustibility, so that the protected material is not directly contacted with air, the ignition of an object is delayed, the combustion speed is reduced, and the flame retardancy and the fire retardancy of the cable are effectively improved.

2. The utility model discloses a, be provided with cold-resistant protective layer through the outside at outer flame retardant coating, cold-resistant protective layer adopts methyl vinyl silicone rubber material to make, and methyl vinyl silicone rubber has good resistant high, low temperature nature, can work for a long time under-50 ~ 250 ℃, and methyl vinyl silicone rubber still has good dampproofing, electrical insulation nature simultaneously, can guarantee the normal operating of cable equipment under adverse circumstances winter in the north.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. 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 insulating layer; 2. an inner fire-resistant layer; 3. wrapping a tape layer; 4. a filler; 5. a shielding layer; 6. an armor layer; 7. fireproof paint; 8. an outer fire barrier layer; 9. a cold-resistant protective layer; 10. a sheath layer; 11. a tensile strand.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in 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 orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings 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 anti-freezing aerial insulated cable special for wind power generation comprises a plurality of cable cores 1, wherein the 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 and an insulating layer 103 from inside to outside, an inner fireproof layer 2 is arranged on the outer side of each cable core 1, the inner fireproof layer 2 is formed by wrapping a Keff drawstring, a wrapping tape layer 3 is wrapped on the outer side of each inner fireproof layer 2, a filler 4 is filled in a gap between the wrapping tape layer 3 and the inner fireproof layer 2, the filler 4 is cable fireproof mud, a shielding layer 5 is arranged on the outer side of the wrapping tape layer 3, an armor layer 6 is arranged on the outer side of the shielding layer 5, fireproof paint 7 is coated on the outer side of the armor layer 6, an outer fireproof layer 8 is arranged on the outer side of the fireproof paint 7, the outer fireproof layer 8 is formed by wrapping a halogen-free low-smoke flame-retardant tape, and a cold-resistant protective layer 9 is arranged on the outer side of the outer fireproof layer 8, the cold-resistant protective layer 9 is made of methyl vinyl silicone rubber materials, the outer side of the cold-resistant protective layer 9 is provided with the sheath layer 10, and the inner portion of the filler 4 is provided with the plurality of tensile resistant ropes 11, so that the tensile resistance of the cable can be improved.

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 103 is made of an extruded cross-linked polyethylene material.

Referring to fig. 1, the wrapping tape layer 3 is made of silicon rubber flame retardant cloth.

Referring to fig. 1, the shielding layer 5 is formed by weaving a composite tape of tinned copper wire and aluminum foil.

Referring to fig. 1, the armor layer 6 is formed by overlapping and wrapping copper strips, and the wrapping and covering rate is not less than 30%.

Referring to fig. 1, the sheathing layer 10 is made of a halogen-free low-smoke flame-retardant polyolefin sheathing material.

When the fireproof cable is used, the inner fireproof layer 2 and the outer fireproof layer 8 are arranged inside the cable, the inner fireproof layer 2 is formed by wrapping a Kevlar tape, the outer fireproof layer 8 is formed by wrapping a halogen-free low-smoke flame-retardant tape, the Kevlar tape has excellent heat-resistant flame-retardant property, does not generate molten drops when meeting fire, does not generate toxic gas, is a good flame-retardant and fireproof material, and can effectively improve the flame-retardant property of the cable; the filler 4 is cable fire-proof mud which is a putty-shaped flame-retardant material and has good fire-retardant and fire-blocking performances; the fireproof paint 7 is coated on the outer side of the armor layer 6, and the fireproof paint 7 has flame retardancy or incombustibility, so that the protected material is not directly contacted with air, the ignition of an object is delayed, the combustion speed is reduced, and the flame retardancy and the fire retardancy of the cable are effectively improved; the cold-resistant protective layer 9 is arranged on the outer side of the outer fireproof layer 8, the cold-resistant protective layer 9 is made of methyl vinyl silicone rubber, the methyl vinyl silicone rubber has good high and low temperature resistance and can work at minus 50-250 ℃ for a long time, and meanwhile, the methyl vinyl silicone rubber also has good moisture resistance and electrical insulation, so that the normal operation of the cable in the severe environment in the north in winter can be guaranteed.

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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. 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. The utility model provides a special aerial insulated cable that prevents frostbite of wind power generation, includes many cable cores (1), its characterized in that: many cable core (1) transposition each other, cable core (1) includes cable core conductor (101), fire resistant mica tape (102) and insulating layer (103) from inside to outside in proper order, the outside of cable core (1) is provided with interior flame retardant coating (2), interior flame retardant coating (2) are formed for the kaifen stretching strap is around the package, and is a plurality of the outside of interior flame retardant coating (2) is around having around band layer (3), around band layer (3) with the gap department packing between interior flame retardant coating (2) is provided with filler (4), filler (4) are cable fire prevention mud, the outside of band layer (3) is provided with shielding layer (5), the outside of shielding layer (5) is provided with armor (6), the outside coating of armor (6) has fire prevention lacquer (7), the outside of fire prevention lacquer (7) is provided with outer flame retardant coating (8), outer flame retardant coating (8) are formed around the package for there being not steamed low fire-retardant area of cigarette, the outside of outer flame retardant coating (8) is provided with cold-resistant protective layer (9), cold-resistant protective layer (9) adopt methyl vinyl silicone rubber material to make, the outside of cold-resistant protective layer (9) is provided with restrictive coating (10), the inside of filler (4) is provided with many stretch-proofing ropes (11).

2. The anti-freezing overhead insulated cable special for wind power generation according to claim 1, characterized in that: 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 anti-freezing overhead insulated cable special for wind power generation as claimed in claim 1, characterized in that: the insulating layer (103) is made of cross-linked polyethylene materials in an extrusion wrapping mode.

4. The anti-freezing overhead insulated cable special for wind power generation as claimed in claim 1, characterized in that: the wrapping tape layer (3) is made of silicon rubber flame-retardant cloth.

5. The anti-freezing overhead insulated cable special for wind power generation according to claim 1, characterized in that: the shielding layer (5) is formed by mixing and weaving tinned copper wires and aluminum foil composite tapes.

6. The anti-freezing overhead insulated cable special for wind power generation according to claim 1, characterized in that: the armor layer (6) is formed by lapping and overlapping copper strips, and the lapping and overlapping rate is not less than 30%.

7. The anti-freezing overhead insulated cable special for wind power generation according to claim 1, characterized in that: the sheath layer (10) is made of halogen-free low-smoke flame-retardant polyolefin sheath material.

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