CN216250137U

CN216250137U - High-performance 20kV overhead insulated cable

Info

Publication number: CN216250137U
Application number: CN202122372298.7U
Authority: CN
Inventors: 刘献良; 邹建志; 刘希辰
Original assignee: Suzhou Nanyang Cable Co ltd
Current assignee: Suzhou Nanyang Cable Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-04-08
Anticipated expiration: 2031-09-29

Abstract

The utility model is suitable for the technical field of overhead cables, and provides a high-performance 20kV overhead insulated cable which comprises a cable core main body, a binding band, a steel core, a filling layer, a reinforcing rib, a fire-resistant layer, a water-blocking layer, an outer rubber coating and an armor layer, wherein a plurality of cable core main bodies are arranged around the steel core and are bound through the binding band, so that the structural strength of the cable core main bodies is improved, and the cable core main bodies are not easy to disperse; meanwhile, the cable core main body is internally composed of a plurality of filter core wires, so that the use cost is lower, and meanwhile, the outer surface of the cable core main body is provided with a semi-conductive outer shielding layer, so that the electromagnetic induction generated when the plurality of cable core main bodies are electrified is prevented from influencing the conductive efficiency; the filling layer is arranged in the cable and filled with the insulating material, so that the safety of the cable is improved; be provided with flame retardant coating and water blocking layer simultaneously, the flame retardant coating improves the refractiveness of this cable through built-in refractory material, and is provided with a plurality of water absorption columns between the water blocking layer, absorbs moisture through water absorption column, prevents that the cable core main part from taking place to soak.

Description

High-performance 20kV overhead insulated cable

Technical Field

The utility model belongs to the technical field of overhead cables, and particularly relates to a high-performance 20kV overhead insulated cable.

Background

In the current overhead cable technology field, the overhead cable is an overhead conductor with an insulating layer and a protective sheath, and a special cable manufactured by a production process similar to a crosslinked cable is a new power transmission mode between the overhead conductor and an underground cable. The aerial cable is a single core and can be divided into a duralumin wire structure, an aluminum alloy wire structure, a steel core or aluminum alloy core supporting structure, a self-supporting three-core texture structure and the like according to different structures. The power supply system has the main characteristics of high power supply reliability, good power supply safety, convenience in erection and maintenance, reasonable economy and the like. The main technical parameters comprise weather resistance, insulation level, inner and outer semi-conductive shielding layers. The overhead cable has wide transmission application at home and abroad.

20kV aerial insulated cable nowadays needs great electric current to pass through, and then has higher requirement to insulated cable, and aerial insulated cable that uses today, the performance is relatively poor, and the protectiveness is relatively poor simultaneously, and life is shorter.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-performance 20kV overhead insulated cable, and aims to solve the problems of poor performance and low protection performance of the overhead insulated cable mentioned in the background.

The utility model is realized in such a way that a high-performance 20kV overhead insulated cable comprises a cable core main body, a binding band, a steel core, a filling layer, a reinforcing rib, a fire-resistant layer, a water-resistant layer, an outer rubber coating and an armor layer.

The cable core main part includes aluminium core wire, a plurality of aluminium core wire constitutes the cable core main part.

And an insulating layer is arranged on the outer wall of the cable core main body.

And a semi-conductive outer shielding layer is arranged on the outer surface of the insulating layer.

The cable core main bodies are arranged around the steel core, and the cable core main bodies are uniformly arranged around the center of the steel core.

The cable core main bodies are connected by a binding band.

Preferably, the filling layer is arranged on the outer surface of the cable core main bodies.

The filling layer is internally filled with insulating filler.

And the inner wall of the filling layer is provided with a head cable core wrapping.

Preferably, the outer surface of the filling layer is provided with a reinforcing layer, and a plurality of metal reinforcing ribs are arranged inside the reinforcing layer.

The reinforcing ribs are uniformly arranged in the reinforcing layer.

Preferably, the outer surface of the reinforcing layer is provided with the fire-resistant layer, and the fire-resistant layer is filled with a fire-proof material.

Preferably, a waterproof layer is arranged on the outer wall of the fire-resistant layer, and waterproof paint is coated on the inner wall of the waterproof layer.

And a plurality of water absorption columns are arranged in the water blocking layer, and a gap is formed between the water absorption columns.

The armor layer is disposed on an outer surface of the water resistant layer.

Preferably, the outer rubber coating is arranged on the outer wall of the armor layer.

The inner wall of the outer rubber is coated with a corrosion-resistant layer.

The outer wall of the outer wrapping rubber is coated with a wear-resistant layer.

Compared with the prior art, the utility model has the beneficial effects that: according to the high-performance 20kV overhead insulated cable, the plurality of cable core main bodies are arranged around the steel core and are bound through the binding bands, so that the structural strength of the plurality of cable core main bodies is improved, and the cable core main bodies are not easy to disperse; meanwhile, the cable core main body is internally composed of a plurality of filter core wires, so that the use cost is lower, and meanwhile, the outer surface of the cable core main body is provided with a semi-conductive outer shielding layer, so that the electromagnetic induction generated when the plurality of cable core main bodies are electrified is prevented from influencing the conductive efficiency; the filling layer is arranged in the cable and filled with the insulating material, so that the safety of the cable is improved; the cable is provided with a fire-resistant layer and a water-blocking layer, the fire resistance of the cable is improved by arranging a fire-resistant material in the fire-resistant layer, a plurality of water absorption columns are arranged between the water-blocking layers, and the water is absorbed by the water absorption columns to prevent the cable core main body from being soaked; gaps are formed among the water absorption columns, so that a margin is reserved when the cable expands with heat and contracts with cold, and the cable is prevented from cracking when the temperature difference is too large; and the aerial insulated cable has comprehensive functions and good insulativity, and is more worthy of popularization and use.

Drawings

FIG. 1 is a schematic overall structure of the present invention;

FIG. 2 is a schematic structural view of a cable core body according to the present invention;

FIG. 3 is a schematic structural view of the wrapping rubber of the present invention;

in the figure: 1. a cable core main body; 101. an aluminum core wire; 102. an insulating layer; 103. a semiconductive outer shield layer; 2. binding bands; 3. a steel core; 4. a filling layer; 401. an insulating filler; 402. wrapping the cable core; 5. a reinforcing layer; 6. reinforcing ribs; 7. a refractory layer; 8. a water resistant layer; 801. a water absorption column; 9. wrapping rubber; 901. a corrosion resistant layer; 902. a wear layer; 10. an armor layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a high performance 20kV aerial insulated cable, includes cable core main part 1, bandage 2, steel core 3, filling layer 4, enhancement layer 5, strengthening rib 6, flame retardant coating 7, water blocking layer 8, outsourcing rubber 9 and armor 10, cable core main part 1 includes aluminium core wire 101, and cable core main part 1 is constituteed to a plurality of aluminium core wires 101, is provided with insulating layer 102 on the outer wall of cable core main part 1, is provided with semi-conductive outer shielding layer 103 on the surface of insulating layer 102.

The cable core main body 1 composed of the aluminum core wires 101 is inconvenient in conducting effect and lower in use cost, meanwhile, the structural strength of the aluminum core wires 101 is higher, the insulating layer 102 improves the insulativity of the cable core main body 1, and the semi-conductive outer shielding layer 103 can prevent electromagnetic interference from occurring among the cable core main bodies 1 and influence the conductivity of the cable core main body 1.

A plurality of cable core main parts 1 surround steel core 3 and set up, and a plurality of cable core main parts 1 are even around the center of steel core 3, and a plurality of cable core main parts 1 are connected by bandage 2.

Wherein, a plurality of cable core main parts 1 are around steel core 3, improve the structural strength of cable through steel core 3, and fix a plurality of cable core main parts 1 through bandage 2, difficult emergence is not hard up, and life is longer.

The surface of a plurality of cable core main parts 1 is provided with filling layer 4, and filling layer 4 is inside to be filled with insulating filler 401, and filling layer 4's inner wall sets up first cable core around package 402.

In addition, the filling layer 4 protects the plurality of cable core main bodies 1 through the insulating filler 401, so that the insulativity of the cable core main bodies 1 is improved, the safety is higher, the cable core is wound around the package 402 to fix the plurality of cable core main bodies 1, and the plurality of cable core main bodies 1 are prevented from loosening.

The outer surface of the filling layer 4 is provided with a reinforcing layer 5, a plurality of metal reinforcing ribs 6 are arranged in the reinforcing layer 5, and the plurality of reinforcing ribs 6 are uniformly arranged in the reinforcing layer 5.

In addition, the plurality of metal reinforcing ribs 6 improve the structural strength of the reinforcing layer 5, and further improve the structural strength of the cable, so that the cable is not easily broken.

The outer surface of enhancement layer 5 is provided with flame retardant coating 7, and the intussuseption of flame retardant coating 7 is filled with fire-proof material, is provided with water blocking layer 8 on the outer wall of flame retardant coating 7, and water blocking layer 8's inner wall is scribbled and is equipped with waterproof coating, and water blocking layer 8 is inside to be provided with a plurality of water absorption columns 801, is provided with the gap between a plurality of water absorption columns 801.

Further, the inside fire-resistant material of flame retardant coating 7 can be aluminium silicate fire-resistant material, and then improves the resistance to burning of flame retardant coating 7, prevent to take place conflagration damage cable, and waterproof layer 8 improves the waterproof nature of cable through water proof coating simultaneously, and then prevents to take place the electric leakage, and water absorption post 801 is made by water absorption material, when partial rainwater infiltration layer 8, water absorption post 801 can absorb the rainwater, prevents that the rainwater from continuing to permeate, and the crack can prevent that the cable expend with heat and contract with cold simultaneously in the gap between a plurality of water absorption posts 801.

Armor 10 sets up on the surface of water-blocking layer 8, and outsourcing rubber 9 sets up the outer wall at armor 10, and the inner wall coating of outsourcing rubber 9 has corrosion resistant coating 901, and the outer wall coating of outsourcing rubber 9 has wearing layer 902.

Specifically, the metal is arranged in the armor layer 10 and protected by one layer of metal, so that the inner water-blocking layer 8 is prevented from being damaged during transportation and installation, the service life of the cable is prolonged, the outer rubber 9 has insulativity, meanwhile, the corrosion-resistant layer 901 can be corrosion-resistant paint, the corrosion resistance of the outer rubber 9 is improved, the wear-resistant layer 902 can be wear-resistant paint, the wear resistance of the outer wall of the outer rubber 9 is improved, the outer rubber 9 is not prone to wear, and the service life is longer.

The working principle and the using process of the utility model are as follows: after the cable core main body 1 is installed, the cable core main body 1 composed of the aluminum core wires 101 is higher in structural strength, when current passes through the cable core main body 1, the insulating layer 102 improves the insulativity of the cable core main body 1, the semi-conductive outer shielding layer 103 can prevent electromagnetic interference among the cable core main bodies 1, the filling layer 4 protects the cable core main bodies 1 through the insulating filler 401, the insulativity of the cable core main body 1 is improved, the water absorption column 801 can absorb water and prevent the water from continuously permeating, meanwhile, the outer wrapping rubber 9 has the insulativity, the corrosion resistance of the corrosion resistance layer 901 is higher than that of the outer wrapping rubber 9, the wear resistance layer 902 improves the wear resistance of the outer wall of the outer wrapping rubber 9, and the outer wrapping rubber 9 is not easy to wear.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a high performance 20kV aerial insulated cable which characterized in that: the cable core comprises a cable core main body (1), a binding band (2), a steel core (3), a filling layer (4), a reinforcing layer (5), a reinforcing rib (6), a fire-resistant layer (7), a water-blocking layer (8), an outer rubber coating (9) and an armor layer (10);

the cable core main body (1) comprises aluminum core wires (101), and the cable core main body (1) is formed by a plurality of aluminum core wires (101);

an insulating layer (102) is arranged on the outer wall of the cable core main body (1);

a semi-conductive outer shielding layer (103) is arranged on the outer surface of the insulating layer (102);

the plurality of cable core main bodies (1) are arranged around the steel core (3), and the plurality of cable core main bodies (1) are uniformly arranged around the center of the steel core (3);

the cable core main bodies (1) are connected by a binding band (2).

2. A high performance 20kV overhead insulated cable according to claim 1, wherein: the filling layer (4) is arranged on the outer surface of the cable core main bodies (1);

the filling layer (4) is filled with insulating filler (401);

and the inner wall of the filling layer (4) is provided with a head cable core wrapping (402).

3. A high performance 20kV overhead insulated cable according to claim 1, wherein: a reinforcing layer (5) is arranged on the outer surface of the filling layer (4), and a plurality of metal reinforcing ribs (6) are arranged in the reinforcing layer (5);

the reinforcing ribs (6) are uniformly arranged in the reinforcing layer (5).

4. A high performance 20kV overhead insulated cable according to claim 1, wherein: the outer surface of the reinforcing layer (5) is provided with the fire-resistant layer (7), and the fire-resistant layer (7) is filled with a fire-proof material.

5. A high performance 20kV overhead insulated cable according to claim 1, wherein: a waterproof layer (8) is arranged on the outer wall of the fire-resistant layer (7), and waterproof paint is coated on the inner wall of the waterproof layer (8);

a plurality of water absorption columns (801) are arranged in the water resisting layer (8), and gaps are formed among the water absorption columns (801);

the armor layer (10) is disposed on an outer surface of the water resistant layer (8).

6. A high performance 20kV overhead insulated cable according to claim 1, wherein: the outer wrapping rubber (9) is arranged on the outer wall of the armor layer (10);

the inner wall of the outer rubber (9) is coated with a corrosion-resistant layer (901);

the outer wall of the outer wrapping rubber (9) is coated with a wear-resistant layer (902).