CN212542026U - High-performance 20kV overhead insulated cable - Google Patents

Abstract

The utility model discloses a high performance 20kV aerial insulated cable, which comprises a cable body, the cable body is from inside to outside in proper order including conductive core, conductor shielding layer, insulating layer, water-blocking layer, damp-proof layer, be equipped with the flame retardant coating outside the damp-proof layer, be equipped with the enhancement protective layer outside the flame retardant coating, be equipped with outer inoxidizing coating outside the enhancement protective layer, outer inoxidizing coating has adopted and has had the close thermoplastic vulcanized rubber material of EP rubbers performance, and this material density is little, makes the weight of cable lighter than traditional type cable, and more easily lays, makes the cable have better weatherability, high temperature resistance ageing, cold-resistant, prevent ftractureing, excellent performances such as acid-resistant, alkali, salt fog, and easily processing, the cable passes through the configuration optimization combination, makes aerial insulated cable have the weatherability, high temperature resistance ageing, cold-resistant, prevent ftractureing, waterproof water-resistant, acid-resistant, The cable quality is greatly improved due to the excellent performances of alkali, salt fog and the like and the fireproof effect.

Description

High-performance 20kV overhead insulated cable

Technical Field

The utility model relates to an overhead cable technical field, more specifically relates to a high performance 20kV aerial insulated cable.

Background

The aerial insulated cable has various advantages over the aerial bare conductor, and in order to improve the reliability of power supply, the aerial insulated cable has been gradually adopted in developed countries from the late stage of the 20 th century 60 s. With the rapid development of the power industry in China, the original overhead bare conductor power transmission of urban distribution networks in most regions is gradually changed into overhead insulated cable transmission, 10kV is always used as the main power supply voltage in the urban distribution network in China, but the load density of urban power grids is increased due to the accelerated economic development speed. 65% of power supply quantity is output at 10kV voltage level, the power supply capacity is obviously insufficient, the distribution point and outgoing line loop number of the transformer substation are increased, and the power supply radius is extended. The 20kV voltage class is a new type of distribution voltage class, and is now recognized worldwide as a replacement for the 10kV voltage class. Engineering application shows that 20kV lines mostly adopt overhead insulated cables, but the lightning stroke accident rate of the overhead insulated cables is obviously higher than that of the traditional overhead bare conductors.

SUMMERY OF THE UTILITY MODEL

There is so, the utility model provides a transmission performance is stable, anti thunderbolt, have weatherability, high temperature resistant ageing, cold-resistant, prevent that the fracture, waterproof block water, acidproof, alkali-proof, salt fog-resistant, fire-retardant fire prevention's high performance 20kV aerial insulated cable at outdoor aerial laying cable.

In order to solve the problem, the utility model adopts the following technical scheme:

the utility model provides a high performance 20kV aerial insulated cable, includes the cable body, the cable body is from inside to outside including conductive core, conductor shielding layer, insulating layer, water blocking layer, keeping off damp layer, flame retardant coating, enhancement protective layer and outer inoxidizing coating in proper order, outer protective layer is equipped with the hydrophobic layer outward.

Preferably, the conductive wire core is made of any one of a copper core, an aluminum alloy core and an aluminum conductor cable steel-reinforced.

Preferably, the conductor shielding layer is extruded on the conductive wire core, the material of the conductor shielding layer is a cross-linkable semiconductive polyolefin shielding material, and the thickness of the conductor shielding layer is not less than 0.8 mm.

Preferably, the insulating layer is extruded on the conductor shielding layer, the insulating layer is made of a weather-resistant black silane crosslinked polyethylene insulating material, the thickness of the insulating layer is not less than 5.5mm, and the insulation eccentricity of the insulating layer is less than 5%.

Preferably, the water-blocking layer is wrapped on the insulating layer, the water-blocking layer is a single-layer double-sided semi-conductive water-blocking tape, and the thickness of the water-blocking layer is 0.15 mm-0.2 mm.

Preferably, the moisture-proof layer is wrapped on the water-proof layer, and the moisture-proof layer is an EL type aluminum-plastic composite tape.

Preferably, the fireproof layer is extruded on the moisture-proof layer, and the fireproof layer is made of a halogen-free low-smoke flame-retardant ceramic polyolefin material.

Preferably, the reinforcing protective layer is formed by weaving high-temperature-resistant flame-retardant aramid fibers, and the reinforcing protective layer is woven on the fireproof layer.

Preferably, the outer protective layer is extruded on the reinforcing protective layer, the material of the outer protective layer is black thermoplastic vulcanized rubber, and the thickness of the outer protective layer is 1.2 mm-2.5 mm.

Preferably, the hydrophobic layer is made of hydrophobic wear-resistant transparent anticorrosion nano composite ceramic paint.

Compared with the prior art, the utility model provides a high performance 20kV aerial insulated cable, including the cable body, the cable body is from inside to outside in proper order including conductive core, conductor shielding layer, insulating layer, water blocking layer, the layer of keeping off the tide, it is equipped with the flame retardant coating to keep off the tide outward, the flame retardant coating is equipped with the enhancement protective layer outward, and the enhancement protective layer is equipped with outer inoxidizing coating outward, and outer inoxidizing coating has adopted and has had the close thermoplastic vulcanized rubber material of EP rubbers performance, and this material density is little, makes the weight of cable lighter than traditional type cable, easily lays more, makes the cable have excellent performances such as better weatherability, high temperature resistance is ageing, cold-resistant, crack resistance, acid, alkali, salt fog to easily processing, the cable passes through the configuration optimization combination, makes aerial insulated cable have the resistant time, high temperature ageing-resistant, cold-resistant, prevent splitting, waterproof block water and block up, The cable has excellent performances of acid resistance, alkali resistance, salt fog resistance and the like, and has a fireproof effect, and the quality is greatly improved.

Drawings

Fig. 1 is the utility model provides a high performance 20kV aerial insulated cable's schematic structure.

In the figure: 1. the cable comprises a conductive wire core, 2 a conductor shielding layer, 3 an insulating layer, 4 a water-resistant layer, 5 a moisture-proof layer, 6 a fire-proof layer, 7 a reinforcing layer, 8 an outer protective layer and 9 a hydrophobic layer.

Detailed Description

The utility model discloses it is right to combine below accompanying drawing 1 to further explain, a high performance 20kV aerial insulated cable, including the cable body, the cable body is from inside to outside including conductive core 1, conductor shielding layer 2, insulating layer 3, water blocking layer 4, moisture barrier 5, flame retardant coating 6, enhancement protective layer 7 and outer inoxidizing coating 8 in proper order, outer inoxidizing coating 8 is equipped with hydrophobic layer 9 outward, hydrophobic layer 9 adopts the mode setting of spraying to put on outer inoxidizing coating 8

The conductive wire core 1 is made of any one of a copper core, an aluminum alloy core and a steel-cored aluminum strand, and the conductive wire core 1 is a compressed conductor, wherein the copper conductor is a TY-type hard copper round wire and conforms to the GB/T3953 regulation; the aluminum conductor adopts LY8 or LY9 type hard round aluminum wires and conforms to GB/T3955 regulations; the aluminum alloy and steel-cored aluminum stranded conductor should meet the GB/T1179 specification.

The conductor shielding layer 2 is extruded on the conductive wire core 1, the material of the conductor shielding layer 2 is a cross-linkable semiconductive polyolefin shielding material, and the thickness of the conductor shielding layer 2 is not less than 0.8 mm.

The insulating layer 3 is extruded on the conductor shielding layer 2, the insulating layer 3 is made of weather-resistant black silane crosslinked polyethylene insulating material, the thickness of the insulating layer 3 is not less than 5.5mm, and the insulating eccentricity of the insulating layer 3 is less than 5%.

The waterproof layer 4 is wrapped on the insulating layer 3, the waterproof layer 4 is a single-layer double-sided semi-conductive waterproof tape, the thickness of the waterproof layer 4 is 0.15-0.2 mm, overlapping wrapping is adopted, and the covering rate is 10-20%.

The moisture-proof layer 5 is wrapped on the water-proof layer 4, the moisture-proof layer 5 is an EL type aluminum-plastic composite belt, a longitudinal wrapping mode is adopted, the cover is overlapped by 5 mm-20 mm, an aluminum base surface faces inwards in the longitudinal wrapping process, the width of the aluminum-plastic composite belt is 78 mm-150 mm, and the thickness of the aluminum-plastic composite belt is 0.2 mm-0.35 mm.

The fireproof layer 6 is extruded on the moisture-proof layer 5, and the fireproof layer 6 is made of halogen-free low-smoke flame-retardant ceramic polyolefin material.

Strengthen protective layer 7 and weave by high temperature resistant fire-retardant aramid fiber silk and form, strengthen protective layer 7 and weave on flame retardant coating 6, high temperature resistant aramid fiber silk plays the mechanical strength who increases aerial insulated cable under normal use condition, and when the external combustion, aramid fiber silk receives can form the insulating layer after the high temperature melts, can play fire-retardant fireproof effect.

The outer protective layer 8 is made of black thermoplastic vulcanized rubber, the thickness of the outer protective layer 8 is 1.2 mm-2.5 mm, and the outer protective layer 8 is extruded on the reinforcing protective layer 7.

The hydrophobic layer 9 is made of hydrophobic wear-resistant transparent anticorrosive nano composite ceramic paint which reflects ultraviolet rays, is weather-resistant, non-combustible and does not absorb moisture.

Furthermore, the present invention is not limited to the above embodiments, as long as it achieves the technical effects of the present invention by substantially the same means, and all shall belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a high performance 20kV aerial insulated cable, includes the cable body, its characterized in that: the cable body is including conductive core (1), conductor shielding layer (2), insulating layer (3), water blocking layer (4), moisture barrier layer (5), flame retardant coating (6), enhancement protective layer (7) and outer inoxidizing coating (8) from inside to outside in proper order, outer inoxidizing coating (8) are equipped with hydrophobic layer (9) outward.

2. The high performance 20kV overhead insulated cable of claim 1, wherein: the conductive wire core (1) is made of any one of a copper core, an aluminum alloy core and a steel-cored aluminum stranded wire.

3. The high performance 20kV overhead insulated cable of claim 1, wherein: the conductor shielding layer (2) is extruded on the conductive wire core (1), the material of the conductor shielding layer (2) is a cross-linkable semiconductive polyolefin shielding material, and the thickness of the conductor shielding layer (2) is not less than 0.8 mm.

4. The high performance 20kV overhead insulated cable of claim 1, wherein: the insulating layer (3) is extruded on the conductor shielding layer (2), the insulating layer (3) is made of weather-resistant black silane crosslinked polyethylene insulating material, the thickness of the insulating layer (3) is not less than 5.5mm, and the insulating eccentricity of the insulating layer (3) is less than 5%.

5. The high performance 20kV overhead insulated cable of claim 1, wherein: the waterproof layer (4) is wrapped on the insulating layer (3), the waterproof layer (4) is a single-layer double-sided semi-conductive waterproof tape, and the thickness of the waterproof layer (4) is 0.15-0.2 mm.

6. The high performance 20kV overhead insulated cable of claim 1, wherein: the moisture-proof layer (5) is wrapped on the water-proof layer (4), and the moisture-proof layer (5) is an EL type aluminum-plastic composite belt.

7. The high performance 20kV overhead insulated cable of claim 1, wherein: the fireproof layer (6) is extruded on the moisture-proof layer (5), and the fireproof layer (6) is made of a halogen-free low-smoke flame-retardant ceramic polyolefin material.

8. The high performance 20kV overhead insulated cable of claim 1, wherein: the reinforced protective layer (7) is formed by weaving high-temperature-resistant flame-retardant aramid fibers, and the reinforced protective layer (7) is woven on the fireproof layer (6).

9. The high performance 20kV overhead insulated cable of claim 1, wherein: the outer protective layer (8) is extruded on the reinforcing protective layer (7), the outer protective layer (8) is made of black thermoplastic vulcanized rubber, and the thickness of the outer protective layer (8) is 1.2-2.5 mm.

10. The high performance 20kV overhead insulated cable of claim 1, wherein: the hydrophobic layer (9) is made of hydrophobic wear-resistant transparent anticorrosion nano composite ceramic paint.

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