CN210575244U

CN210575244U - Anti-aging environment-friendly flame-retardant power cable

Info

Publication number: CN210575244U
Application number: CN201921561396.1U
Authority: CN
Inventors: 宗铭; 谈亮; 刘云昌
Original assignee: JIANGSU HONGXIANG CABLE CO Ltd
Current assignee: JIANGSU HONGXIANG CABLE CO Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-19
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses an aging-resistant environment-friendly flame-retardant power cable, which comprises a power transmission wire and a grounding wire, wherein the power transmission wire penetrates through the inner part of an inner supporting block, the inner part of the inner supporting block is provided with an inner through hole, the inner part of the inner through hole is provided with the grounding wire in a penetrating way, the outer side of the inner supporting block is wrapped with a shielding layer, the outer side of the shielding layer is wrapped with an insulating layer, the outer side of the insulating layer is wrapped with a flame-retardant layer, the outer side of the flame-retardant layer is wrapped with a waterproof layer, the inner supporting block adopts a rubber structure internally provided with an outer through hole and an inner through hole, the aging-resistant environment-friendly flame-retardant power cable can lead the single-stranded power transmission wire to be independently drawn out from the whole power cable through the penetration of the power transmission wire, is convenient for connecting circuits to use, and, the flame retardant property is good.

Description

Anti-aging environment-friendly flame-retardant power cable

Technical Field

The utility model relates to a power cable technical field specifically is a fire-retardant power cable of ageing-resistant environment-friendly.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes from 1 to 500kV and above, and various insulated power cables. The basic structure of the power cable is composed of four parts, namely a wire core (conductor), an insulating layer, a shielding layer and a protective layer. The core is the conductive part of the power cable, is used for transmitting electric energy, and is the main part of the power cable. The insulating layer electrically isolates the wire cores from the ground and the wire cores of different phases, ensures electric energy transmission and is an indispensable component in a power cable structure. Power cables of 15KV and above generally have a conductor shield and an insulation shield. The protective layer functions to protect the power cable from external impurities and moisture, and to prevent external force from directly damaging the power cable.

The existing power cable is wound together with the wire cores, so that a single wire is convenient to pull out for overhauling and replacing, redundant wires cannot be pulled out for other use, and the use efficiency of the power cable is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant power cable of ageing-resistant environment-friendly to solve current power cable and twine together with the sinle silk more, thereby be convenient for take single electric wire out and overhaul the change, unnecessary electric wire can not take out other usefulness in addition, has reduced the problem of the efficiency that power cable used.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant power cable of ageing-resistant environment-friendly, includes transmission of electricity electric wire and earth connection, transmission of electricity electric wire runs through and wears to establish inside the interior bracer, interior through-hole has been seted up to interior bracer inside, the inside earth connection that runs through of interior through-hole is provided with, interior bracer outside parcel has the shielding layer, shielding layer outside parcel has the insulating layer, insulating layer outside parcel has fire-retardant layer, fire-retardant layer outside parcel has the waterproof layer.

Preferably, the inner supporting block is of a rubber structure with an outer through hole and an inner through hole arranged inside.

Preferably, the outer through holes are formed in five corners of the inner supporting block, and the inner through holes are formed in the central portion of the inner supporting block.

Preferably, a filling layer is arranged in a groove formed in the outer side of the inner supporting block and connected with the shielding layer, and a steel wire bundle is arranged in the filling layer.

Preferably, the shielding layer is formed by wrapping aluminum foil.

Preferably, the insulating layer adopts an ethylene propylene rubber structure layer, and the thickness of the insulating layer is 1-3 mm.

Preferably, the flame-retardant layer is a chlorinated polyethylene wrapping layer, and the waterproof layer is a polyethylene polypropylene composite wrapping layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a transmission of electricity electric wire runs through inside wearing to establish the inner strut for the single strand transmission of electricity electric wire all can be taken out from power cable is whole alone, and the interconnecting link of being convenient for uses, and the single strand transmission of electricity electric wire that does not moreover can be taken out from, can overhaul the change to single electric wire, is favorable to the utilization ratio of resource.

2. The utility model discloses an interior kicking block adopts and embeds there is the rubber construction of outer through-hole and interior through-hole for support whole, structural strength is high, and it has the shielding layer to wrap up through the interior kicking block outside, is used for shielding external signal's interference, and the outside parcel of shielding layer has the insulating layer, has good insulating properties, improves the security of using.

3. The utility model discloses an insulating layer outside parcel has fire-retardant layer, and fire-retardant layer adopts chlorinated polyethylene parcel layer, has good flame retardant efficiency, and fire-retardant layer outside parcel has the waterproof layer, inside waterproof rainwater infiltration power 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 view of the overall cross-sectional structure of the present invention;

fig. 2 is a schematic view of the inner support block structure of the present invention.

In the figure: 1. a power transmission wire; 2. an inner supporting block; 3. a ground line; 4. an inner through hole; 5. a shielding layer; 6. an insulating layer; 7. a flame retardant layer; 8. a waterproof layer; 9. a filling layer; 10. a steel wire bundle; 11. an outer through hole; 12. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, in an embodiment of the present invention, an aging-resistant environment-friendly flame-retardant power cable includes a power transmission wire 1 and a ground wire 3, the power transmission wire 1 penetrates through an inner supporting block 2, so that the single-stranded transmission wires can be independently drawn out from the whole power cable, the use of connecting circuits is convenient, after the single wire is damaged, the single wire can be replaced, which is beneficial to improving the utilization rate of resources, the inner supporting block 2 is internally provided with an inner through hole 4, the inner through hole 4 is internally provided with a grounding wire 3 in a penetrating way, be used for ground connection to improve the safety in utilization, 2 outside parcels of interior vaulting piece have shielding layer 5 for shield external electromagnetic interference, 5 outside parcels of shielding layer have insulating layer 6, have good insulating properties, improve the security of using, 6 outside parcels of insulating layer have fire-

retardant layer

7, 7 outside parcels of fire-retardant layer have waterproof layer 8, inside waterproof rainwater infiltration power cable.

Preferably, the inner supporting block 2 is of a rubber structure with an outer through hole 11 and an inner through hole 4 arranged inside, so that the inner supporting block 2 is arranged to be of a hollow structure inside, and the stability of the inner supporting structure is improved.

Preferably, the outer through holes 11 are formed in five corners of the inner supporting block 2, and the inner through hole 4 is formed in the central portion of the inner supporting block 2, so that the power transmission wire 1 and the grounding wire 3 can be conveniently installed in a penetrating manner.

Preferably, a filling layer 9 is arranged in a groove 12 which is formed in the outer side of the inner support block 2 and connected with the shielding layer 5, and a steel wire bundle 10 is arranged in the filling layer 9, so that the tearing resistance and the tearing resistance of the cable are improved.

Preferably, the shielding layer 5 is formed by wrapping aluminum foil and is used for shielding external electromagnetic interference.

Preferably, the insulating layer 6 is an ethylene propylene rubber structure layer, the thickness of the insulating layer 6 is 1-3mm, and the insulating layer has good insulating property and improves the use safety.

Preferably, the flame-retardant layer 7 is a chlorinated polyethylene wrapping layer, the waterproof layer 10 is a polyethylene polypropylene composite wrapping layer, and waterproof rainwater permeates into the power cable; run through the inside setting of bracer 2 including wearing to establish through transmission of electricity electric wire 1, make the single strand transmission of electricity electric wire all can be taken out from power cable is whole alone, the interconnecting link of being convenient for uses, and the single strand transmission of electricity electric wire that does not take out, be favorable to the utilization ratio of resource, simultaneously single electric wire damage back, it can to change single, adopt the built-in rubber construction who has outer through-hole 11 and interior through-hole 4 through interior bracer 2, a whole is used for supporting, structural strength is high, there is shielding layer 5 through 2 outside parcels of interior bracer, an interference for shielding external signal, 5 outside parcels of shielding layer have insulating layer 6, good insulating properties has, the security of use improves, 6 outside parcels of insulating layer have fire-retardant layer 7, fire-retardant layer 7 adopts chlorinated polyethylene parcel layer, good fire-.

The utility model discloses a theory of operation and use flow: run through the inside setting of bracer 2 including wearing to establish through transmission of electricity electric wire 1, make the single strand transmission of electricity electric wire all can be taken out from power cable is whole alone, the interconnecting link of being convenient for uses, and the single strand transmission of electricity electric wire that does not take out, be favorable to the utilization ratio of resource, simultaneously single electric wire damage back, it can to change single, adopt the built-in rubber construction who has outer through-hole 11 and interior through-hole 4 through interior bracer 2, a whole is used for supporting, structural strength is high, there is shielding layer 5 through 2 outside parcels of interior bracer, an interference for shielding external signal, 5 outside parcels of shielding layer have insulating layer 6, good insulating properties has, the security of use improves, 6 outside parcels of insulating layer have fire-retardant layer 7, fire-retardant layer 7 adopts chlorinated polyethylene parcel layer, good fire-.

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

1. The utility model provides an ageing-resistant fire-retardant power cable of environment-friendly, includes transmission of electricity electric wire (1) and earth connection (3), its characterized in that: transmission of electricity electric wire (1) runs through and wears to establish inside bracer (2), interior bracer (2) are inside to be seted up interior through-hole (4), interior through-hole (4) are inside to be run through and to be provided with earth connection (3), interior bracer (2) outside parcel has shielding layer (5), shielding layer (5) outside parcel has insulating layer (6), insulating layer (6) outside parcel has fire-retardant layer (7), fire-retardant layer (7) outside parcel has waterproof layer (8).

2. The aging-resistant environment-friendly flame-retardant power cable according to claim 1, characterized in that: the inner supporting block (2) is of a rubber structure with an outer through hole (11) and an inner through hole (4) arranged inside.

3. The aging-resistant environment-friendly flame-retardant power cable according to claim 2, characterized in that: the outer through holes (11) are arranged at five corners of the inner supporting block (2), and the inner through holes (4) are arranged at the central part of the inner supporting block (2).

4. The aging-resistant environment-friendly flame-retardant power cable according to claim 1, characterized in that: and a filling layer (9) is arranged in a groove (12) which is formed in the outer side of the inner supporting block (2) and connected with the shielding layer (5), and a steel wire bundle (10) is arranged in the filling layer (9).

5. The aging-resistant environment-friendly flame-retardant power cable according to claim 1, characterized in that: the shielding layer (5) is formed by wrapping aluminum foil.

6. The aging-resistant environment-friendly flame-retardant power cable according to claim 1, characterized in that: the insulating layer (6) adopts an ethylene propylene rubber structure layer, and the thickness of the insulating layer (6) is 1-3 mm.

7. The aging-resistant environment-friendly flame-retardant power cable according to claim 1, characterized in that: the flame-retardant layer (7) is a chlorinated polyethylene wrapping layer, and the waterproof layer (8) is a polyethylene polypropylene composite wrapping layer.