CN211376237U

CN211376237U - Bearing type overhead insulated cable for power transmission and communication

Info

Publication number: CN211376237U
Application number: CN201922198130.1U
Authority: CN
Inventors: 吕国武; 王磊凡
Original assignee: Jiangsu Huaya Cable Co ltd
Current assignee: Jiangsu Huaya Cable Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-08-28
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a transmission of electricity and communication are with bearing type overhead insulated cable, the cable core comprises a cable core, the cable core form by a pair of insulation core pair twist, pack around package first shielding layer behind the netted obturator of polypropylene in the space department of cable core, weave the second shielding layer outside first shielding layer, crowded package polyethylene sheath outside the second shielding layer, strand steel sandwich layer, aluminium sandwich layer in proper order outside the polyethylene sheath, crowded package second insulating layer outside aluminium sandwich layer. The cable has the advantages of good transmission effect, low laying cost and low material cost, and can not only effectively transmit electric power, but also transmit good electric signals.

Description

Bearing type overhead insulated cable for power transmission and communication

Technical Field

The utility model relates to a wire and cable field specifically indicates a transmission of electricity and communication are with bearing type overhead insulated cable.

Background

At present, the use amount of overhead insulated cables and communication cables in China is still huge, a part of circuits arranged by national power grids and communication departments are large in number and various in construction, materials are purchased respectively, the cables enter the same residential area and village groups for multiple construction, electric pole laying and secondary wire pulling are added, the manpower cost and the material cost are high, related cost is reduced, the use safety and effectiveness of the cables are guaranteed, new products are specially designed to replace old products, the state and the people are benefited, and the enterprise competitiveness is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a transmission of electricity and communication are with bearing type overhead insulated cable is provided, and transmission effect is good, lays with low costsly, and the material cost is low, can effectual electric power transmission, signal of telecommunication transmission that again can be good.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a transmission of electricity and communication are with bearing type overhead insulated cable, its characterized in that, includes the cable core, the cable core form by a pair of insulation core pair twist, pack behind the netted obturator of polypropylene at the space department of cable core around wrapping first shielding layer, weave the second shielding layer outside first shielding layer, crowded package polyethylene sheath outside the second shielding layer, strand steel sandwich layer, aluminium core layer in proper order outside polyethylene sheath, crowded package second insulating layer outside aluminium core layer.

In a further improvement, the insulated wire core is composed of a signal transmission conductor and a first insulating layer extruded outside the signal transmission conductor.

In a further improvement, the signal transmission conductor is formed by stranding a plurality of oxygen-free copper monofilaments.

In a further improvement, the first shielding layer is an aluminum foil or an aluminum-plastic composite tape.

The second shielding layer is formed by weaving copper wires, and the weaving density is not lower than 80%.

In a further improvement, the first insulating layer is an XLPE, PVC or PE insulating layer.

In a further improvement, the second insulating layer is an XLPE, PVC or PE insulating layer.

In a further improvement, the steel core layer is a circular ring structure formed by a plurality of steel wires in a surrounding manner.

In a further improvement, the aluminum core layer is a circular ring structure formed by surrounding a plurality of aluminum conductors.

The beneficial effects of the utility model reside in that:

the existing lead transmission has skin effect, the central current of the conductor is very small or even no, and by adopting the structure, the electric field of the power transmission does not influence the signal transmission, and even if the electric field exists, the electric field is directly blocked outside by the first shielding layer and the second shielding layer, and meanwhile, the outer circumference of the lead is increased, so that the current-carrying capacity of the lead is increased; the utility model is suitable for 1kV electric energy transmission, simultaneously, the signal cable is sent to each household, and the cost of repeated laying is reduced; and the interference of lightning to the signal cable is greatly avoided except for the whole cable.

Drawings

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

Detailed Description

As shown in fig. 1, a bearing type overhead insulated cable for power transmission and communication comprises a cable core, wherein the cable core is formed by twisting a pair of insulated wire cores, a gap of the cable core is filled with a polypropylene reticular filler 3 and then is wrapped with a first shielding layer 4, a second shielding layer 5 is woven outside the first shielding layer, a polyethylene sheath 6 is extruded outside the second shielding layer, a steel core layer 7 and an aluminum core layer 8 are sequentially twisted outside the polyethylene sheath, and a second insulating layer 9, specifically an XLPE, PVC or PE insulating layer, is extruded outside the aluminum core layer; in order to further improve the performance of the cable, the insulated wire core is composed of a signal transmission conductor 1 and a first insulating layer 2 extruded outside the signal transmission conductor, specifically an XLPE, PVC or PE insulating layer; the signal transmission conductor is formed by twisting a plurality of oxygen-free copper monofilaments, the first shielding layer is an aluminum foil or aluminum-plastic composite belt, the second shielding layer is formed by weaving copper wires, the weaving density is not lower than 80%, the skin effect exists in the existing wire transmission, the central current of the conductor is very small or even no, and by adopting the structure, the electric field of the power transmission does not influence the signal transmission, and even if the electric field exists, the electric field is directly blocked outside by the first shielding layer and the second shielding layer; the steel core layer is a circular ring structure formed by a plurality of steel wires in a surrounding manner and is a tensile element of the overhead insulated cable; the aluminum core layer is a circular ring structure formed by a plurality of aluminum conductors and is a carrier for transmitting electric energy; the technology has good transmission effect, solves the laying cost and the material cost, can effectively transmit electric power and can well transmit electric signals.

The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a scope of protection.

Claims

1. The utility model provides a transmission of electricity and communication are with bearing type overhead insulated cable, its characterized in that, includes the cable core, the cable core form by a pair of insulation core pair twist, pack behind the netted obturator of polypropylene at the space department of cable core around wrapping first shielding layer, weave the second shielding layer outside first shielding layer, crowded package polyethylene sheath outside the second shielding layer, strand steel sandwich layer, aluminium core layer in proper order outside polyethylene sheath, crowded package second insulating layer outside aluminium core layer.

2. The overhead insulated power cable of claim 1, wherein the insulated wire core comprises a signal transmission conductor and a first insulating layer extruded outside the signal transmission conductor.

3. The load-bearing overhead insulated power transmission and communication cable of claim 2, wherein said signal transmission conductor is stranded from a plurality of oxygen-free copper monofilaments.

4. The power transmission and communication load-bearing overhead insulated cable according to claim 1, wherein the first shielding layer is an aluminum foil or an aluminum-plastic composite tape.

5. The power transmission and communication load-bearing overhead insulated cable of claim 1, wherein the second shielding layer is braided by copper wires, and the braiding density is not less than 80%.

6. The overhead insulated power transmission and communication cable according to claim 2, wherein said first insulating layer is an XLPE, PVC or PE insulating layer.

7. The overhead insulated power transmission and communication cable according to claim 1, wherein said second insulating layer is XLPE, PVC or PE insulating layer.

8. The load-bearing overhead insulated cable for power transmission and communication according to claim 1, wherein the steel core layer is a ring structure formed by a plurality of steel wires.

9. The overhead insulated power transmission and communication cable as claimed in claim 1, wherein the aluminum core layer is a ring structure surrounded by a plurality of aluminum conductors.