CN210575228U

CN210575228U - Flame-retardant cable

Info

Publication number: CN210575228U
Application number: CN201920909282.5U
Authority: CN
Inventors: 林楚明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-05-19
Anticipated expiration: 2029-06-17

Abstract

The utility model particularly discloses a flame-retardant cable, which comprises a plurality of conducting wires and a silica gel reinforcing band; the plurality of leads are symmetrically distributed at two ends of the silica gel reinforcing band; the wire includes a cable core; the outer side of the cable core is wrapped with a wrapping layer; an armored aluminum tape is arranged outside the wrapping layer and is of a gear-shaped structure; the outer sides of the plurality of leads are wrapped with inner side protective layers; a first waterproof layer is arranged on the outer side of the inner side protective layer; a second waterproof layer is arranged on the outer side of the first waterproof layer; an outer protective layer is arranged at one end of the second waterproof layer, which is far away from the inner protective layer; a flame-retardant layer is arranged between the first waterproof layer and the second waterproof layer; a plurality of supporting bars are arranged in the flame-retardant layer; the two ends of the supporting bar are respectively connected with the first waterproof layer and the second waterproof layer. The utility model relates to a rationally, can avoid outside moisture to corrode the cable, can completely cut off outside heat, protection cable core, fire-retardant layer can effectively prevent the inside burning of cable, is favorable to completely cutting off flame, and the filling layer further prevents the inside burning of cable.

Description

Flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to flame retarded cable.

Background

The flame-retardant cable means: the fundamental characteristics of a cable in which the specimen is burnt under the specified test conditions, the flame propagation is only within a limited range after the test fire source is removed, and the cable is capable of self-extinguishing within a limited time are as follows: in case of fire, the cable may be burnt out and cannot run, but can prevent the fire from spreading. The flame retardancy of conventional cables is yet to be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a flame retarded cable is provided.

A flame-retardant cable comprises a plurality of conducting wires and a silica gel reinforcing band; the plurality of leads are symmetrically distributed at two ends of the silica gel reinforcing band; the wire comprises a cable core; the outer side of the cable core is wrapped with a wrapping layer; an armored aluminum tape is arranged outside the wrapping layer and is of a gear-shaped structure; the outer sides of the plurality of leads are wrapped with inner side protective layers; a first waterproof layer is arranged on the outer side of the inner side protective layer; a second waterproof layer is arranged on the outer side of the first waterproof layer; an outer protective layer is arranged at one end, far away from the inner protective layer, of the second waterproof layer; a flame-retardant layer is arranged between the first waterproof layer and the second waterproof layer; a plurality of supporting bars are arranged in the flame-retardant layer; and the two ends of the supporting bar are respectively connected with the first waterproof layer and the second waterproof layer.

Preferably, a filling layer is arranged between the inner side protective layer and the silica gel reinforcing belt; the filling layer is an aluminum hydroxide flame retardant. The flame retardant effect of the cable is enhanced.

Preferably, the inner protective layer and the outer protective layer are both made of cross-linked polyethylene insulating materials. The cross-linked polyethylene insulating material has the advantages of simple structure, light weight, good heat resistance, chemical corrosion resistance and the like.

Preferably, the first waterproof layer is neoprene. Effectively avoid the inside of moisture infiltration filling layer to influence the job stabilization nature of wire.

Preferably, the second waterproof layer is polyvinyl chloride. Effectively avoiding water from permeating into the flame-retardant layer to reduce the flame-retardant effect of the flame-retardant layer.

Preferably, the flame retardant layer is a magnesium hydroxide flame retardant. It releases bound water when heated and absorbs a great deal of latent heat to lower the surface temperature of the synthetic material filled with it in the flame, and has the functions of inhibiting the decomposition of polymer and cooling the generated combustible gas.

Has the advantages that: the utility model relates to a rationally, through the external moisture of effective separation of first waterproof layer and second waterproof layer, avoid outside moisture to corrode the cable, the armor aluminium strip is gear column structure, can guarantee that the cable is firm to be rabbeted in the filling layer, can completely cut off outside heat simultaneously, protects the cable core, and fire-retardant layer can effectively prevent the inside burning of cable, is favorable to completely cutting off flame to the damage of protection cable, the filling layer further prevents the inside burning of cable.

Drawings

Fig. 1 is a cross-sectional view of a flame retardant cable according to the present invention.

Fig. 2 is a schematic structural diagram of the wire of the present invention.

In the figure: 1-a wire; 2-a filling layer; 3-inner protective layer; 4-a first waterproof layer; 5-a second waterproof layer; 6-outer protective layer; 7-supporting strips; 8-a flame retardant layer; 9-silica gel reinforcing band; 11-a cable core; 12-wrapping a covering; 13-armored aluminum tape.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A flame-retardant cable comprises a plurality of wires 1 and a silica gel reinforcing band 9; the plurality of leads 1 are symmetrically distributed at two ends of the silica gel reinforcing band 9; the conductor 1 comprises a cable core 11; the outer side of the cable core 11 is wrapped with a wrapping layer 12; an armored aluminum tape 13 is arranged outside the wrapping layer 12, and the armored aluminum tape 13 is of a gear-shaped structure; the outer sides of the leads 1 are wrapped with inner side protective layers 3; a first waterproof layer 4 is arranged on the outer side of the inner side protective layer 3; a second waterproof layer 5 is arranged on the outer side of the first waterproof layer 4; an outer protective layer 6 is arranged at one end of the second waterproof layer 5, which is far away from the inner protective layer 3; a flame-retardant layer 8 is arranged between the first waterproof layer 4 and the second waterproof layer 5; a plurality of supporting strips 7 are arranged in the flame-retardant layer 8; two ends of the support bar 7 are respectively connected with the first waterproof layer 4 and the second waterproof layer 5; a filling layer 2 is arranged between the inner side protective layer 3 and the silica gel reinforcing belt 9; the filling layer 2 is an aluminum hydroxide flame retardant, so that the flame retardant effect of the cable is enhanced; the inner side protection layer 3 and the outer side protection layer 6 are both made of cross-linked polyethylene insulation materials which have the advantages of simple structure, light weight, good heat resistance, chemical corrosion resistance and the like; the first waterproof layer 4 is made of chloroprene rubber, so that the influence of moisture penetrating into the filling layer 2 on the working stability of the lead 1 is effectively avoided; the second waterproof layer 5 is made of polyvinyl chloride, so that water is effectively prevented from permeating into the flame-retardant layer 8, and the flame-retardant effect of the flame-retardant layer 8 is reduced; the flame-retardant layer 8 is a magnesium hydroxide flame retardant which releases bound water when decomposed by heating, absorbs a large amount of latent heat to reduce the surface temperature of a synthetic material filled with the flame retardant in the flame, and has the effects of inhibiting the decomposition of a polymer and cooling the generated combustible gas.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model relates to a rationally, through the external moisture of effective separation of first waterproof layer 4 and second waterproof layer 5, avoid outside moisture to corrode the cable, armor aluminium strip 13 is gear column structure, can guarantee that the cable is firm to splice in filling layer 2, can completely cut off outside heat simultaneously, protection cable core 11, fire-retardant layer 8 can effectively prevent the inside burning of cable, be favorable to completely cutting off flame, thereby the damage of protection cable, filling layer 2 further prevents the inside burning of cable.

Of course, the above description only shows a certain embodiment of the present invention, and the detailed description thereof is not to be construed as limiting the scope of the present invention, and it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principle and spirit of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A flame-retardant cable comprises a plurality of conducting wires (1) and a silica gel reinforcing band (9); it is characterized in that; the plurality of leads (1) are symmetrically distributed at two ends of the silica gel reinforcing band (9); the wire (1) comprises a cable core (11); the outer side of the cable core (11) is wrapped with a wrapping layer (12); an armored aluminum tape (13) is arranged outside the wrapping layer (12), and the armored aluminum tape (13) is of a gear-shaped structure; the outer sides of the plurality of leads (1) are wrapped with inner side protective layers (3); a first waterproof layer (4) is arranged on the outer side of the inner side protective layer (3); a second waterproof layer (5) is arranged on the outer side of the first waterproof layer (4); an outer protective layer (6) is arranged at one end, far away from the inner protective layer (3), of the second waterproof layer (5); a flame-retardant layer (8) is arranged between the first waterproof layer (4) and the second waterproof layer (5); a plurality of supporting strips (7) are arranged in the flame-retardant layer (8); and the two ends of the support bar (7) are respectively connected with the first waterproof layer (4) and the second waterproof layer (5).

2. A flame retardant cable according to claim 1, wherein a filling layer (2) is provided between the inner protective layer (3) and the silica gel reinforcing tape (9); the filling layer (2) is a glass fiber tape or an aluminum hydroxide flame retardant.

3. A flame retardant cable according to claim 1, wherein the inner protective layer (3) and the outer protective layer (6) are both cross-linked polyethylene insulation.

4. A fire retardant cable according to claim 1, wherein said first waterproof layer (4) is one of neoprene or butyl rubber.

5. A flame retardant cable according to claim 1, wherein said second waterproof layer (5) is one of polyvinyl chloride or polyurethane.