CN211479743U

CN211479743U - Flame-retardant cable

Info

Publication number: CN211479743U
Application number: CN202020011813.1U
Authority: CN
Inventors: 李彩章
Original assignee: Hebei Wanfang Cable Group Co ltd
Current assignee: Hebei Wanfang Cable Group Co ltd
Priority date: 2020-01-04
Filing date: 2020-01-04
Publication date: 2020-09-11
Anticipated expiration: 2030-01-04

Abstract

The utility model discloses a flame-retardant cable, cable main part inside center is equipped with three cable cores, the cable core outside is equipped with cable band layer, cable band layer bonds on the cable core through the cladding, cable band layer inboard is equipped with the crosslinked polyethylene layer, the crosslinked polyethylene layer is fixed at cable band layer inner wall through the packing, the cable core outside is equipped with the inner protective layer, the inner protective layer bonds at the cable core through the cladding, the cable core is stranded by many round copper single strands, form by the stranded transposition of stranded again, the inner protective layer outside is equipped with crosslinked silicon silk screen, crosslinked silicon silk screen bonds on the inner protective layer through the cladding, the crosslinked silicon silk screen outside is equipped with fire-retardant layer, fire-retardant layer bonds on crosslinked silicon silk screen through the cladding, the fire-retardant layer outside is equipped with the outer protective layer; the utility model has the advantages of high-efficient fire-retardant, prevent high erosion, separation intensity of a fire, effect stability, nimble high efficiency, convenient to use.

Description

Flame-retardant cable

Technical Field

The utility model relates to a fire-retardant technical field of cable specifically is a flame retarded cable.

Background

Cable (electric cable): the cable protection sleeve is usually composed of a plurality of or a plurality of groups of wires, along with the rapid development of power cable buried laying engineering, the cable protection sleeve puts higher requirements on cable protection, and is manufactured by adopting Polyethylene (PE) and high-quality steel pipes through processes of sand blasting and shot blasting pretreatment, plastic dipping or coating, and heating and curing. It is one of the most commonly used electrically insulating tubes for protecting wires and cables. The cable protective sleeve has the advantages that the cable protective sleeve is good in insulating property, high in chemical stability, free of rusting and aging, and capable of adapting to harsh environments, so that the cable protective sleeve is widely applied, and the following advantages can be achieved: the cable protective sleeve has the advantages of good corrosion resistance, long service life, high strength and high rigidity, can be used in a humid saline-alkali zone, is good in flame retardance and heat resistance, can be used for a long time at a high temperature of 130 ℃ without deformation, does not burn when meeting fire, is used for direct burial under a traffic lane without adding a concrete protective layer, can quicken the construction progress of a cable project, has certain flexibility for both a cable protective sleeve and a pipe fitting, can resist damage caused by external stress and foundation settlement, has good performance of resisting external signal interference, has smooth inner wall, does not scratch a cable, and is suitable for expansion with heat and contraction with cold prevention due to the addition of a rubber sealing ring at a joint;

however, the existing cable cannot prevent the spread of fire in a fire disaster, cannot limit the burning in a local range, is easy to affect other various devices once the fire disaster occurs, and causes great loss.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flame retarded cable has high-efficient fire-retardant, prevents high erosion, separation intensity of a fire, stable, the nimble high efficiency of effect, convenient to use's advantage, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flame-retardant cable, includes cable body, the inside center of cable body is equipped with three cable cores, the cable core outside is equipped with cable band layer, cable band layer bonds on the cable core through the cladding, cable band layer inboard is equipped with the crosslinked polyethylene layer, the crosslinked polyethylene layer is fixed at cable band inboard wall through the packing, cable body center is the cable layer, and the outside is equipped with the inner protective layer, the inner protective layer bonds on the cable layer through the cladding, the inner protective layer outside is equipped with the crosslinked silicon silk screen, the crosslinked silicon silk screen bonds on the inner protective layer through the cladding, the crosslinked silicon silk screen outside is equipped with fire-retardant layer, fire-retardant layer bonds on the crosslinked silicon silk screen through the cladding, the fire-retardant layer outside is equipped with the outer protective layer, the outer protective layer bonds on fire-retardant.

Preferably, the cable core is formed by bundling a plurality of round copper single wires into one strand and then twisting the strands.

Preferably, the wrapping direction of the cable wrapping layer is from left to right.

Preferably, the inner protective layer is woven by flame-retardant fibers with flame-retardant and anti-dripping properties.

Preferably, the three cable cores are distributed and arranged in the center.

Preferably, the cross-sectional shape of the cable main body is circular, and the cross-linked silicon mesh is uniformly distributed in a grid shape.

Preferably, the outer protective layer is made of an insulating rubber product, and the flame-retardant layer is a polyolefin sheath layer.

Compared with the prior art, the beneficial effects of the utility model are as follows: this flame retarded cable, in the use, through the tensile strength of outer protective layer protection cable, thereby prevent that the cable from receiving to pull the use intensity that improves the cable, the flame retardant polyolefin restrictive coating on flame retardant layer then has resistant oily, acidproof, heat-resisting characteristic, have good physical and mechanical properties, do not contain halogen, can not stretch the burning when meetting the conflagration, can not produce halogen and have toxic gas, the security performance is high, adopt the crosslinked polyethylene layer can make the cable wear-resisting, stress crack resistance is good, thermal aging resistance, environmental stress resistance and the ability of chemical resistance, moreover, the steam generator is simple in structure, light in weight.

Drawings

Fig. 1 is a schematic view of the overall structure of a flame-retardant cable according to the present invention;

fig. 2 is a schematic cross-sectional structure view of a flame-retardant cable according to the present invention;

fig. 3 is the utility model relates to a flame retarded cable's cable core inner structure schematic diagram.

The figures are labeled as follows: 1. a cable body; 2. an outer protective layer; 3. a flame retardant layer; 4. an inner protective layer; 5. a cable layer; 6. cross-linking the silicon wire mesh; 7. a cable belting layer; 8. a cable core; 9. a crosslinked polyethylene layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below 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, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1, 2 and 3, the flame-retardant cable comprises a cable body 1, three cable cores 8 are arranged at the center inside the cable body 1, a cable belting layer 7 is arranged on the outer side of each cable core 8, the cable belting layer 7 is bonded on the cable cores 8 through coating, a cross-linked polyethylene layer 9 is arranged on the inner side of the cable belting layer 7, the cable belting layer 7 is tightly wound on the cable cores 8, the structural compactness of the cable cores 8 is guaranteed, and the wear resistance, the stress cracking resistance, the heat aging resistance, the environmental stress resistance and the chemical corrosion resistance of the cable are improved through the cross-linked polyethylene layer 9.

Example 2:

referring to fig. 1 and 3, a flame retardant cable includes a cross-linked silicon mesh 6 and a cable tape layer 7, a cross-linked polyethylene layer 9 is fixed on an inner wall of the cable tape layer 7 by filling, an inner protective layer 4 is arranged on an outer side of the cable layer 5, the inner protective layer 4 is bonded to the cable layer 5 by cladding, the cross-linked silicon mesh 6 is arranged on an outer side of the inner protective layer 4, the cross-linked silicon mesh 6 is bonded to the inner protective layer 4 by cladding, fire spreading is effectively prevented by the inner protective layer 4 when a fire occurs, and bonding strength of the cable is improved by the cross-linked silicon mesh 6.

Example 3:

referring to fig. 1 and 2, a flame retardant cable comprises an outer protective layer 2 and a flame retardant layer 3, the flame retardant layer 3 is arranged on the outer side of a cross-linked silicon screen 6, the flame retardant layer 3 is bonded on the cross-linked silicon screen 6 through coating, the outer protective layer 2 is arranged on the outer side of the flame retardant layer 3, the outer protective layer 2 is bonded on the flame retardant layer 3 through coating, the tensile strength of the cable is protected through the outer protective layer 2, the cable is prevented from being damaged by pulling, so that the service strength of the cable is improved, the flame retardant layer 3 has the characteristics of oil resistance, acid resistance and heat resistance, and good physical and mechanical properties for relatively retarding the fire.

The working principle is as follows: the utility model relates to a flame-retardant cable, in the use, the rubber layer of outer protective layer 2 improves the wearability and the insulating properties of cable, prevent to rub too big with the ground in the process of acting as go-between and receiving the line, damage the crust of cable main part 1, improve user's security performance, if meet the conflagration dangerous situation, the fire-retardant polyolefin restrictive coating of fire-retardant layer 3 has resistant oily, acidproof, heat-resisting characteristic, have good physical and mechanical properties, prevent to spread burning when meeting the conflagration, produce halogen-containing toxic gas, improve security performance, strengthen the bonding strength between fire-retardant layer 3 and inner protective layer 4 through crosslinked silicon silk screen 6, improve the performance of cable, inner protective layer 4 has fire-retardant fiber weaving of fire-retardant anti-drip performance, can further improve flame retardant efficiency, through the better inside cable core 8 of protection of cable layer 5, crosslinked polyethylene layer 9 protects the structural strength of inside cable core 8, the cable wrapping layer 7 is tightly wound on the cable core 8, so that the structure compactness of the cable core 8 is ensured, and the transmission efficiency of the cable core 8 in the conveying and using process is ensured.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A flame retardant cable characterized by: the cable comprises a cable body (1), three cable cores (8) are arranged at the center inside the cable body (1), a cable belting layer (7) is arranged on the outer side of each cable core (8), the cable belting layer (7) is bonded on the cable cores (8) through coating, a cross-linked polyethylene layer (9) is arranged on the inner side of the cable belting layer (7), the cross-linked polyethylene layer (9) is fixed on the inner wall of the cable belting layer (7) through filling, a cable layer (5) is arranged at the center of the cable body (1), an inner protective layer (4) is arranged on the outer side of the cable body, the inner protective layer (4) is bonded on the cable layer (5) through coating, a cross-linked silicon screen (6) is arranged on the outer side of the inner protective layer (4) through coating bonding, a flame-retardant layer (3) is arranged on the outer side of the cross-linked silicon screen (6) through coating bonding, an outer protective layer (2) is arranged on the outer side of the flame-retardant layer (3), and the outer protective layer (2) is bonded on the flame-retardant layer (3) through coating.

2. A flame retardant cable according to claim 1, wherein: the cable core (8) is formed by bundling a plurality of round copper single wires into one strand and then twisting the strands.

3. A flame retardant cable according to claim 1, wherein: the wrapping direction of the cable wrapping layer (7) is from left to right.

4. A flame retardant cable according to claim 1, wherein: the inner protection layer (4) is woven by flame-retardant fibers with flame-retardant and anti-dripping performances.

5. A flame retardant cable according to claim 1, wherein: the three cable cores (8) are distributed and arranged in the center.

6. A flame retardant cable according to claim 1, wherein: the cross section of the cable main body (1) is circular, and the cross-linked silicon silk screens (6) are uniformly distributed in a grid shape.

7. A flame retardant cable according to claim 1, wherein: the outer protective layer (2) is made of an insulating rubber product, and the flame-retardant layer (3) is a polyolefin sheath layer.