CN212809891U

CN212809891U - Fireproof and flame-retardant power cable

Info

Publication number: CN212809891U
Application number: CN202021607664.1U
Authority: CN
Inventors: 宁丽婵
Original assignee: Zhongshang Cable Group Co ltd
Current assignee: Zhongshang Cable Group Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-03-26
Anticipated expiration: 2030-08-05

Abstract

The utility model belongs to the technical field of power cables, especially, be a fire prevention fire-retardant power cable, including the retainer plate, fixedly connected with baffle in the retainer plate, be provided with a plurality of standing grooves between retainer plate and the baffle, be provided with the lag in the standing groove, fixedly connected with a plurality of spring in the lag, the bottom fixedly connected with conductor of spring, the fixed surface of retainer plate is connected with the waterproof layer, the surface of waterproof layer is provided with outer fire-retardant layer, the fixed surface of outer fire-retardant layer is connected with outer metallic shield layer, the surface of outer metallic shield layer is provided with the heat-absorbing layer; the utility model discloses, can prevent water to power cable's damage through setting up the waterproof layer, guaranteed power cable's life, outer flame retardant coating and interior flame retardant coating can protect power cable not damaged under the environment of high temperature burning for this power cable can use in high temperature service environment.

Description

Fireproof and flame-retardant power cable

Technical Field

The utility model belongs to the technical field of power cable, concretely relates to fire-retardant power cable prevents fires.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater, is gradually increased in proportion in the power line, is used for transmitting and distributing in a trunk line of a power system, is increased along with the development of the society, and is required to have larger and larger current-carrying capacity and larger cross section of a conductive core of a high-voltage power cable.

But present power cable radiating effect is not good, if work for a long time in high temperature place, not only can influence the transmission function of cable, the insulating layer also easily ages and peels off moreover, leads to the fracture of cable, and current power cable fire-retardant fire prevention ability is still relatively poor moreover, causes the insulating layer damage owing to the small kindling of high temperature easily, causes the electric wire short circuit to cause bigger conflagration, arouses the main trunk way to be forced to have a power failure, can't give the longer rescue time of constructor.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a fire prevention fire-retardant power cable has characteristics such as the radiating effect is good, fire-retardant fireproof effect is good.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant power cable prevents fires, includes the retainer plate, fixedly connected with baffle in the retainer plate, be provided with a plurality of standing groove between retainer plate and the baffle, be provided with the lag in the standing groove, a plurality of spring of fixedly connected with in the lag, the bottom fixedly connected with conductor of spring, the fixed surface of retainer plate is connected with the waterproof layer, the surface of waterproof layer is provided with outer fire-retardant layer, the outer metal shielding layer of fixed surface on outer fire-retardant layer is connected with, the surface on outer metal shielding layer is provided with the heat-sink shell, a plurality of heat absorption hole has been seted up in the heat-sink shell, the fixed surface on heat-sink shell is connected with the wearing layer.

Preferably, the placing groove is filled with flame-retardant filler.

Preferably, the side surface of the fixing ring is fixedly connected with a heat conducting rod, and one end of the heat conducting rod penetrates through the waterproof layer, the outer flame-retardant layer and the outer metal shielding layer and is fixedly connected to the heat absorbing layer.

Preferably, be provided with the PVB protective layer in the lag, fire-retardant layer in the fixed surface of PVB protective layer is connected with, the fixed surface on interior fire-retardant layer is connected with the insulating layer, the surface of insulating layer is provided with interior metal shielding layer.

Preferably, the PVB protective layer is made of polyvinyl butyral, the outer flame-retardant layer and the inner flame-retardant layer are both made of glass fiber layers, the insulating layer is made of a PET film, and the outer metal shielding layer and the inner metal shielding layer are made of aluminum foil metal layers.

Preferably, the waterproof layer is made of a felt coiled material waterproof layer, the heat absorption layer is made of a black chromium coating plate, and the wear-resistant layer is made of a low-carbon alloy wear-resistant layer.

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

the utility model can prevent the damage of water to the power cable by arranging the waterproof layer, thereby ensuring the service life of the power cable, the outer flame-retardant layer and the inner flame-retardant layer can protect the power cable from being damaged under the environment of high-temperature combustion, so that the power cable can be used in the environment of high-temperature use, the flame retardant property of the power cable is enhanced, the power cable is effectively protected, the heat conducting rod and the heat absorbing layer can transfer the heat of the conductor to the air, the heat radiation property of the power cable is improved, the rapid aging of the power cable is prevented, the outer metal shielding layer and the inner metal shielding layer adopt double-layer shielding to resist external electromagnetic interference, the outward radiation electromagnetic interference of the system is avoided, the wear-resistant layer can protect the power cable from being worn by the external environment, the utility model is convenient for the use of workers, the protective layer can make the performances in the aspects of impact resistance and the, external environment extrusion lag drives the lag and removes to make lag extrusion spring, can slow down the oppression power under the effect of the elastic force of spring, reduce the influence of oppression power to the conductor.

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 front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic cross-sectional structural view of the protective cover of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

in the figure: 1. a stationary ring; 2. a partition plate; 3. a placement groove; 4. a protective sleeve; 5. a spring; 6. a conductor; 7. a flame retardant filler; 8. a waterproof layer; 9. an outer flame retardant layer; 10. an outer metal shielding layer; 11. a heat absorbing layer; 12. a heat absorption hole; 13. a wear layer; 14. a heat conducting rod; 15. a PVB protective layer; 16. an inner flame retardant layer; 17. an insulating layer; 18. an inner metal shield layer.

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.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a fireproof and flame-retardant power cable comprises a fixing ring 1, a partition plate 2 is fixedly connected in the fixing ring 1, a plurality of placing grooves 3 are formed between the fixing ring 1 and the partition plate 2, protective sleeves 4 are arranged in the placing grooves 3, a plurality of springs 5 are fixedly connected in the protective sleeves 4, conductors 6 are fixedly connected to the bottom ends of the springs 5, the protective sleeves 4 are extruded by the external environment to drive the protective sleeves 4 to move, so that the protective sleeves 4 extrude the springs 5, the compression force can be relieved under the action of the elastic force of the springs 5, the influence of the compression force on the conductors 6 is reduced, a waterproof layer 8 is fixedly connected to the surface of the fixing ring 1, the waterproof layer 8 can prevent water from damaging the power cable, the service life of the power cable is ensured, an outer flame-retardant layer 9 is arranged on the surface of the waterproof layer 8, and the outer flame-retardant layer 9 and the inner flame-retardant layer 16 can protect the power cable from being damaged in, the power cable can be used in a high-temperature use environment, the flame retardant performance of the power cable is enhanced, the power cable is effectively protected, the outer metal shielding layer 10 is fixedly connected to the surface of the outer flame retardant layer 9, the heat absorbing layer 11 is arranged on the surface of the outer metal shielding layer 10, the outer metal shielding layer 10 and the inner metal shielding layer 18 adopt double-layer shielding to resist external electromagnetic interference, the electromagnetic interference of the system radiating outwards is avoided, a plurality of heat absorbing holes 12 are formed in the heat absorbing layer 11, the wear-resistant layer 13 is fixedly connected to the surface of the heat absorbing layer 11, the wear-resistant layer 13 can protect the power cable from being worn by the external environment, and the power cable is convenient for workers to use.

Specifically, the placing groove 3 is filled with a flame retardant filler 7.

Specifically, the side fixedly connected with heat conduction rod 14 of retainer plate 1, the one end of heat conduction rod 14 is passed waterproof layer 8, outer flame retardant coating 9 and outer metallic shield layer 10 fixed connection on heat-sink shell 11, and heat conduction rod 14 and heat-sink shell 11 can be with the heat transfer of conductor 6 to the air in, have improved power cable's heat dispersion, prevent that power cable is ageing fast.

Specifically, be provided with PVB protective layer 15 in the lag 4, fire-retardant layer 16 in the fixed surface of PVB protective layer 15 is connected with, the fixed surface of interior fire-retardant layer 16 is connected with insulating layer 17, insulating layer 17's surface is provided with interior metal shielding layer 18, and PVB protective layer 15 can make the performance in the aspect of the intensity such as shock resistance more superior.

Specifically, the PVB protective layer 15 is made of polyvinyl butyral, the outer flame-retardant layer 9 and the inner flame-retardant layer 16 are both made of glass fiber layers, the insulating layer 17 is made of a PET film, and the outer metal shielding layer 10 and the inner metal shielding layer 18 are made of aluminum foil metal layers.

Specifically, the waterproof layer 8 is made of a felt coiled material waterproof layer 8, the heat absorption layer 11 is made of a black chromium coating plate, and the wear-resistant layer 13 is made of a low-carbon alloy wear-resistant layer 13.

The utility model discloses a theory of operation and use flow: the utility model discloses during the use, install power cable to suitable position after, use power cable, when conductor 6 heat is too high, the heat transmits to heat-sink shell 11 through heat conduction pole 14, heat-sink shell 11 absorbs conductor 6's heat, then in scattering the heat into the air through wearing layer 13, when conductor 6 receives external environment oppression, external environment extrusion lag 4 drives lag 4 and removes, thereby extrusion spring 5, make the shrink of spring 5, alleviate the influence of oppression power to conductor 6 under the effect of spring 5's elasticity, the life of conductor 6 has been 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 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 a fire prevention fire-retardant power cable, includes retainer plate (1), its characterized in that: fixedly connected with baffle (2) in retainer plate (1), be provided with a plurality of standing groove (3) between retainer plate (1) and baffle (2), be provided with lag (4) in standing groove (3), a plurality of spring (5) of fixedly connected with in lag (4), the bottom fixedly connected with conductor (6) of spring (5), the fixed surface of retainer plate (1) is connected with waterproof layer (8), the surface of waterproof layer (8) is provided with outer fire-retardant layer (9), the fixed surface of outer fire-retardant layer (9) is connected with outer metallic shield layer (10), the surface of outer metallic shield layer (10) is provided with heat-absorbing layer (11), a plurality of heat-absorbing hole (12) have been seted up in heat-absorbing layer (11), the fixed surface of heat-absorbing layer (11) is connected with wearing layer (13).

2. A fire-resistant and fire-retardant power cable according to claim 1, characterized in that: and the placing groove (3) is filled with flame-retardant filler (7).

3. A fire-resistant and fire-retardant power cable according to claim 1, characterized in that: the side face of the fixing ring (1) is fixedly connected with a heat conducting rod (14), and one end of the heat conducting rod (14) penetrates through the waterproof layer (8), the outer flame-retardant layer (9) and the outer metal shielding layer (10) and is fixedly connected onto the heat absorbing layer (11).

4. A fire-resistant and fire-retardant power cable according to claim 1, characterized in that: be provided with PVB protective layer (15) in lag (4), fire-retardant layer (16) in the fixed surface of PVB protective layer (15) is connected with, the fixed surface of interior fire-retardant layer (16) is connected with insulating layer (17), the surface of insulating layer (17) is provided with interior metallic shield layer (18).

5. A fire-resistant and fire-retardant power cable according to claim 4, characterized in that: the material of PVB protective layer (15) is polyvinyl butyral, the material of outer flame retardant coating (9) and interior flame retardant coating (16) all is the glass fiber layer, the material of insulating layer (17) is the PET film, the material of outer metal shielding layer (10) and interior metal shielding layer (18) is the aluminium foil metal layer.

6. A fire-resistant and fire-retardant power cable according to claim 1, characterized in that: the waterproof layer (8) is made of a felt coiled material waterproof layer (8), the heat absorption layer (11) is made of a black chromium coating plate, and the wear-resistant layer (13) is made of a low-carbon alloy wear-resistant layer (13).