CN217767937U

CN217767937U - Composite insulation anti-interference low-voltage fire-resistant cable

Info

Publication number: CN217767937U
Application number: CN202221923560.0U
Authority: CN
Inventors: 王剑英
Original assignee: Jiangsu Dadi Cable Co ltd
Current assignee: Jiangsu Dadi Cable Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-08
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses an anti-interference low pressure fire resisting cable of composite insulation, including fire-retardant core cover, and fire-retardant core cover is made by fire-retardant rubber, the inside of fire-retardant core cover is provided with the three cable conductor that is annular equidistance and distributes, the outside of fire-retardant core cover is provided with the insulating layer, the outer wall of insulating layer is provided with the metal and weaves the stratum reticulare, and the metal weaves the stratum reticulare for copper metal mesh grid, the outer wall that the stratum reticulare was woven to the metal is provided with the flame retardant coating, the outer wall of flame retardant coating is provided with aluminium system insulating layer, and aluminium system insulating layer is made by aluminium system material, the outer wall of aluminium system insulating layer is provided with the wearing layer, and the wearing layer is made by fire-retardant epoxy. This anti-interference low pressure fire resisting cable of compound insulation can increase the anti-interference and fire-resistant performance of cable through being provided with a plurality of protective layers, simultaneously through strengthening rib and the support frame that sets up, can the intensity of the promotion cable of certain degree to increase the life of cable.

Description

Composite insulation anti-interference low-voltage fire-resistant cable

Technical Field

The utility model relates to a low tension cable technical field specifically is an anti-interference low pressure fire resisting cable of compound insulation.

Background

The cable is a conductor covered with an insulating layer, a protective layer, a shielding layer and the like for transmitting electric power or signal current and signal voltage, and can be divided into a high-voltage cable and a low-voltage cable according to voltage, and the low-voltage cable line is difficult to lay and maintain compared with a low-voltage overhead line and a low-voltage overhead insulated line, but is widely applied to a low-voltage power distribution system because the low-voltage cable line has the characteristics of reliable operation, no pole standing, no land occupation, no influence on the sight, less influence by the outside and the like.

The existing chinese patent with application number CN209729593U discloses a low-voltage cable, which includes at least two groups of conductive cores, each group of conductive cores is respectively provided with an insulating sleeve, the insulating sleeve is externally provided with a filling layer, a wrapping tape and an outer sheath, and color separation lines for distinguishing the conductive cores are respectively arranged in the insulating sleeves corresponding to all the conductive cores.

Although the scheme simplifies the manufacturing process of the insulating sleeve and reduces the manufacturing cost of the insulating sleeve, the composite insulating anti-interference low-voltage fire-resistant cable is simple in structure, the cable is easily interfered by an external magnetic field in the signal transmission process, the fire resistance is general, the practicability of the cable is reduced, the existing requirements are not met, and the composite insulating anti-interference low-voltage fire-resistant cable is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-interference low pressure fire resisting cable of composite insulation to solve the fire-retardant and poor problem of anti-interference effect of cable that provides in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the composite insulating anti-interference low-voltage fire-resistant cable comprises a flame-retardant core sleeve, wherein the flame-retardant core sleeve is made of flame-retardant rubber, three cable conductors which are distributed in an annular and equidistant mode are arranged inside the flame-retardant core sleeve, an insulating layer is arranged outside the flame-retardant core sleeve, a metal woven net layer is arranged on the outer wall of the insulating layer and is a copper metal woven net, a fire-proof layer is arranged on the outer wall of the metal woven net layer, an aluminum heat-insulating layer is arranged on the outer wall of the fire-proof layer and is made of aluminum materials, a wear-resistant layer is arranged on the outer wall of the aluminum heat-insulating layer and is made of flame-retardant epoxy resin;

preferably, a plurality of support frames are arranged between the cable conductors in an equidistant distribution manner, and reinforcing plates are fixedly arranged at three protruding support ends of each support frame;

preferably, the outer wall of fire-retardant core cover is provided with first buffer board, first buffer board is the equidistance and distributes and be provided with a plurality of group, and every group all is annular equidistance and distributes and be provided with a plurality of, the fixed second buffer board that is provided with of the equal adhesion in one side of first buffer board, and first buffer board and second buffer board all with insulating layer fixed connection.

Preferably, the inside of support frame all is connected through the strengthening rib, and the strengthening rib is made by carbon fiber material.

Preferably, the cable conductors are all provided with nickel-zinc ferrite magnetic rings outside.

Preferably, the first buffer plate and the second buffer plate are made of rubber materials.

Preferably, the insulating layer is made of a low smoke zero halogen flame retardant thermosetting polyolefin material.

Preferably, the fire-proof layer is made of mica tape material.

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

1. the utility model discloses a be provided with fire-retardant core cover in cable conductor outside, fire-retardant core cover is made by fire-retardant rubber, still have fire-retardant characteristic when having certain flexibility, provide fire-resistant protection for cable conductor, the outside is provided with the flame retardant coating simultaneously, aluminium system insulating layer and wearing layer, the wearing layer is made by fire-retardant epoxy, fine flame retardant efficiency has, aluminium system insulating layer is when meetting high temperature flame oxidation, can absorb a large amount of heat energy and generate aluminium oxide and form thermal-insulated protective screen, it is obvious to insulate against heat oxygen effect, can slow down stretching of intensity of a fire, the flame retardant coating is made by the mica tape material, the heat-resisting temperature of synthetic mica tape can reach 1200 ℃, is an ideal insulating material, so the setting of flame retardant coating can make the refractivity increase, thereby through foretell setting, make the great increase of fire-retardant fire resistance of cable.

2. The utility model discloses a be provided with nickel zinc ferrite magnetic ring in cable conductor's outside, nickel zinc ferrite magnetic ring can make the fine passing through of useful signal, the passing through of suppression high frequency interference signal that again can be fine, and low cost makes the anti-interference effect of cable promote, and the metal woven net layer that the outside set up simultaneously can block electromagnetic interference to cable power transmission's harm, makes the further reinforcing of anti-jamming ability, makes things convenient for daily use.

3. The utility model discloses a be provided with the strengthening rib in the inside of fire-retardant core cover, support frame and gusset plate, the support frame can increase the support intensity of fire-retardant core cover, the gusset plate can increase the support area of support frame effect, the strengthening rib is made by the carbon fiber, fine toughness has, can increase the certain tensile strength of cable when connecting a plurality of support frames, the triangle-shaped structure that first buffer board and the second buffer board of outside setting are constituteed can disperse and come from outside pressure, make the anti extrusion ability of cable rise.

Drawings

Fig. 1 is a front view of the internal structure of the present invention;

FIG. 2 is a side view of the internal structure of the present invention;

fig. 3 is a partially enlarged view of the area a in fig. 1 according to the present invention.

In the figure: 1. a flame retardant core sleeve; 2. reinforcing ribs; 3. a support frame; 4. a reinforcing plate; 5. a nickel zinc ferrite bead; 6. a cable conductor; 7. a first buffer plate; 8. a second buffer plate; 9. an insulating layer; 10. a metal woven mesh layer; 11. a fire-resistant layer; 12. an aluminum heat insulation layer; 13. and a wear-resistant layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-3, the present invention provides a technical solution: a composite insulation anti-interference low-voltage fire-resistant cable comprises a flame-retardant core sleeve 1, wherein the flame-retardant core sleeve is made of flame-retardant rubber, three cable conductors 6 which are distributed in an annular and equidistant mode are arranged inside the flame-retardant core sleeve 1, an insulating layer 9 is arranged outside the flame-retardant core sleeve 1, a metal woven net layer 10 is arranged on the outer wall of the insulating layer 9, the metal woven net layer 10 is a copper metal woven net, a fireproof layer 11 is arranged on the outer wall of the metal woven net layer 10, an aluminum heat insulation layer 12 is arranged on the outer wall of the fireproof layer 11, the aluminum heat insulation layer 12 is made of an aluminum material, a wear-resistant layer 13 is arranged on the outer wall of the aluminum heat insulation layer 12, and the wear-resistant layer 13 is made of flame-retardant epoxy resin;

the supporting frames 3 are arranged among the cable conductors 6, a plurality of supporting frames 3 are distributed at equal intervals, and reinforcing plates 4 are fixedly arranged at three protruding supporting ends of each supporting frame 3;

first buffer board 7, its setting is at the outer wall of fire-retardant core cover 1, and first buffer board 7 is the equidistance and distributes and be provided with a plurality of group, and every group all is annular equidistance and distributes and be provided with a plurality of, and the equal adhesion in one side of first buffer board 7 is fixed and is provided with second buffer board 8, and first buffer board 7 and second buffer board 8 all with insulating layer 9 fixed connection.

Referring to fig. 1 and 2, the insides of the support frames 3 are connected through the reinforcing ribs 2, the reinforcing ribs 2 are made of carbon fiber materials, the reinforcing ribs 2 are made of carbon fiber, and have good toughness, so that a plurality of support frames 3 can be connected while certain tensile strength of the cable is increased, and the overall strength of the cable is increased;

referring to fig. 1, the nickel-zinc ferrite bead 5 is disposed outside the cable conductor 6, and the nickel-zinc ferrite bead 5 can allow useful signals to pass through well and inhibit high-frequency interference signals from passing through well, and has low cost, so that the anti-interference effect of the cable is improved;

referring to fig. 2 and 3, the first buffer plate 7 and the second buffer plate 8 are made of rubber material, and the triangular structure formed by the first buffer plate 7 and the second buffer plate 8 can disperse the pressure from the outside, so that the anti-extrusion capability of the cable is improved;

referring to fig. 2 and 3, the insulating layer 9 is made of a low-smoke halogen-free flame-retardant thermosetting polyolefin material, which makes the cable have characteristics of flame retardancy, low smoke, low toxicity, and the like, and can increase the insulation property of the cable;

referring to fig. 2 and 3, the fire-proof layer 11 is made of mica tape material, and the heat-resistant temperature of the synthetic mica tape can reach 1200 ℃, which is an ideal insulating material, so the fire-proof layer 11 can increase the fire resistance.

The working principle is as follows: when in use, the nickel-zinc ferrite magnetic ring 5 is arranged outside the cable conductor 6, so that useful signals can well pass through, and high-frequency interference signals can well be inhibited from passing through, the cost is low, the anti-interference effect of the cable is improved, meanwhile, the metal woven net layer 10 arranged outside can block the damage of electromagnetic interference on the power transmission of the cable, so that the anti-interference capability is further enhanced, the daily use is convenient, when the cable is installed or dragged and placed, the wear-resisting layer 13 can increase the wear resistance of the cable, the triangular structure formed by the first buffer plate 7 and the second buffer plate 8 can disperse the pressure from the outside, so that the anti-extrusion capability of the cable is improved, the support frame 3 can increase the support strength of the flame-retardant core sleeve 1, the cable conductor 6 is well protected, the reinforcing plate 4 can increase the support area acted by the support frame 3, and the reinforcing ribs 2 are made of carbon fibers, the flame-retardant cable has good toughness, a plurality of support frames 3 can be connected, meanwhile, certain tensile strength of the cable is increased, the overall strength of the cable is increased, when a fire disaster occurs, the flame-retardant core sleeve 1 is made of flame-retardant rubber, has certain flexibility and flame-retardant property, provides fire-retardant protection for a cable conductor, meanwhile, a fireproof layer 11, an aluminum heat-insulating layer 12 and a wear-resistant layer 13 are arranged outside the cable, the wear-resistant layer 13 is made of flame-retardant epoxy resin, and has good flame-retardant effect, when the aluminum heat-insulating layer 12 is oxidized by high-temperature flame, a large amount of heat energy can be absorbed, aluminum oxide is generated to form a heat-insulating barrier, the heat-insulating and oxygen-insulating effects are obvious, the spread of fire can be slowed down, the fireproof layer 11 is made of a mica tape material, the heat-resistant temperature of a synthetic mica tape can reach 1200 ℃, the flame-retardant cable is an ideal insulating material, and the setting of the fireproof layer 11 can increase the fire resistance, therefore, through the arrangement, the flame-retardant and fire-resistant performance of the cable is greatly improved, and when the cable is used, the insulating layer 9 is made of the low-smoke halogen-free flame-retardant thermosetting polyolefin material, so that the cable has the characteristics of heat insulation, wear resistance, insulation and the like, and the insulation and fire-resistant effects of the cable can be further improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a compound insulation anti-interference low pressure fire resisting cable, includes fire-retardant core cover (1), its characterized in that: the cable conductor (6) that the inside of fire-retardant core cover (1) is provided with three annular equidistance and distributes, the outside of fire-retardant core cover (1) is provided with insulating layer (9), the outer wall of insulating layer (9) is provided with metal woven mesh layer (10), and metal woven mesh layer (10) are copper metal woven mesh, the outer wall of metal woven mesh layer (10) is provided with flame retardant coating (11), the outer wall of flame retardant coating (11) is provided with aluminium system insulating layer (12), the outer wall of aluminium system insulating layer (12) is provided with wearing layer (13).

2. The composite insulating anti-interference low-voltage fire-resistant cable according to claim 1, wherein: be provided with support frame (3) between cable conductor (6), and support frame (3) are the equidistance and distribute and be provided with a plurality of, the three protrusion of support frame (3) supports the end and all fixedly is provided with gusset plate (4).

3. The composite insulating anti-interference low-voltage fire-resistant cable according to claim 1, wherein: the outer wall of fire-retardant core cover (1) is provided with first buffer board (7), first buffer board (7) are the equidistance and distribute and be provided with a plurality of group, and every group all is annular equidistance and distributes and be provided with a plurality of, the equal adhesion in one side of first buffer board (7) is fixed and is provided with second buffer board (8), and first buffer board (7) and second buffer board (8) all with insulating layer (9) fixed connection.

4. The composite insulating anti-interference low-voltage fire-resistant cable according to claim 2, characterized in that: the interior of the support frame (3) is connected through the reinforcing ribs (2).

5. The composite insulating anti-interference low-voltage fire-resistant cable according to claim 1, wherein: and nickel-zinc ferrite magnetic rings (5) are arranged outside the cable conductors (6).