CN212967266U

CN212967266U - Novel sheathed flame-retardant cable

Info

Publication number: CN212967266U
Application number: CN202021916485.6U
Authority: CN
Inventors: 邢军
Original assignee: Jinan Shengtong Power Cable Co ltd
Current assignee: Jinan Shengtong Power Cable Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-13
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a novel sheath type flame-retardant cable, which comprises a cable jacket, wherein a rubber layer, a heat preservation layer and a flame-retardant layer are sequentially arranged at the center of an inner cavity of the cable jacket from inside to outside, a hose is arranged in a gap between the rubber layer and the heat preservation layer, four limiting pipe sleeves are arranged on the side wall of the inner cavity of the cable jacket, steel ropes are arranged in the inner cavities of the four limiting pipe sleeves, a protective pipe is arranged at the center of the inner cavity of the cable jacket, a cable core is arranged at the center of the inner cavity of the protective pipe, an insulating layer is arranged on the outer side of the circumference of the cable core and is tangent to the side wall of the inner cavity of the protective pipe, a flame-retardant filling layer is arranged in the inner cavity of the cable jacket, four cavities are respectively arranged among the four limiting pipe sleeves and surround, meanwhile, the tensile property of the cable can be enhanced.

Description

Novel sheathed flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to novel sheathed flame retardant cable.

Background

The cable is generally a cable similar to a rope formed by twisting a plurality of or a plurality of groups of leads (at least two leads in each group), each group of leads are mutually insulated and are usually twisted around a center, the whole outer surface is wrapped with a highly insulated covering layer, the cable has the characteristics of internal electrification and external insulation, the prior cable external member mostly adopts a full-rubber product, once a fire disaster occurs, a large amount of dense smoke is generated, and a hydrogen halide gas with strong corrosivity is generated to endanger the life of people, so that the inconvenience is brought to escape of people, the environment is polluted, if the cable is continuously burnt, the cable gradually becomes powder to fall off, the protection effect on conductors is lost, the cable is easy to be punctured to cause short circuit, the safety and smoothness of communication and electric power under the fire disaster condition are difficult to ensure, and a flame-retardant cable is needed to be designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel sheathed flame retardant cable to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel sheath type flame-retardant cable comprises a cable jacket, wherein a rubber layer, a heat-insulating layer and a flame-retardant layer are sequentially arranged at the center of an inner cavity of the cable jacket from inside to outside, a hose is arranged in a gap between the rubber layer and the heat-insulating layer, four limiting pipe sleeves are arranged on the side wall of the inner cavity of the cable jacket, steel ropes are arranged in the inner cavities of the four limiting pipe sleeves, a protection tube is arranged at the center of the inner cavity of the cable jacket, a cable core is arranged at the center of the inner cavity of the protection tube, an insulating layer is arranged on the outer side of the circumference of the cable core, the insulating layer is tangent to the side wall of the inner cavity of the protective tube, the inner cavity of the cable jacket is provided with a flame-retardant filling layer, and the limiting pipe sleeves and the protection pipes are both positioned in the inner cavity of the flame-retardant filling layer, four cavities are arranged in the inner cavity of the flame-retardant filling layer, and the four cavities are respectively positioned among the four limiting pipe sleeves and surround the protection pipes.

Preferably, the outer circumferential surface of the cable jacket is plated with a layer of halogen-free flame-retardant paint, so that black smoke and toxic gas are not generated during combustion of the flame-retardant paint, the safety performance is improved, and the combustion of the cable can be blocked.

Preferably, the hose is composed of a single pipe, the hose is arranged on the outer side of the circumference of the rubber layer in a spiral structure, the top of the hose is provided with an air inlet valve, carbon dioxide gas is pressurized in an inner cavity of the hose and can block oxygen, powerful combustion conditions are reduced, and therefore a fire extinguishing effect is achieved, and meanwhile the hose in the spiral structure is convenient to distribute uniformly on the rubber layer, so that a comprehensive fire extinguishing and flame retarding effect is achieved.

Preferably, the protection tube is an oval tube sleeve, the oval protection tube has a large deformation space in the radial direction of the cable, the cable core protection effect is optimal, and meanwhile, the cable core can be limited and fixed.

Preferably, the circumferential outer walls of the four limiting pipe sleeves are tangent to the outer wall of the protection pipe, and the connecting lines of the four limiting pipe sleeves form a square structure, so that the protection pipe can be limited and fixed, and meanwhile, the tensile property of steel ropes in the limiting pipe sleeves is high, so that the tensile property of the cable is improved, and the possibility of breaking and cracking of the cable is reduced.

Preferably, the flame-retardant layer and the flame-retardant filling layer are both made of halogen-free high-flame-retardant glass fiber materials, black smoke and toxic gas cannot be generated when the halogen-free high-flame-retardant glass fiber materials are combusted, safety performance is improved, and meanwhile, the cable can be prevented from being combusted twice, so that the flame-retardant effect of the cable is improved.

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

the novel sheath type flame-retardant cable of the utility model carries out three-stage flame retardance through the flame-retardant paint, the flame-retardant layer and the flame-retardant filling layer, the inner cavity of the hose is pressurized with carbon dioxide gas which can block oxygen, the powerful condition of combustion is reduced, thereby achieving the effect of fire extinguishing, the hose with a spiral structure is convenient to be uniformly distributed on the rubber layer, thereby further playing the comprehensive effect of fire extinguishing and flame retardance, the flame-retardant effect is good, the protection tube is an oval tube sleeve, the deformation space of the oval protection tube in the radial direction of the cable is large, the protection effect of the cable core is best, meanwhile, the cable core can be limited and fixed, the circumferential outer walls of the four limiting tube sleeves are tangent to the outer walls of the protection tube, and the connecting lines of the four limiting tube sleeves form a square structure, thus, the protection tube can be limited and fixed, meanwhile, the, thereby the tensile resistance of cable has been improved, has reduced the possibility that the cable rupture cracked, and the cavity further improves the deformation degree of cable inner chamber, further improves the tensile resistance of cable.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a cross-sectional side view of the hose of the present invention;

in the figure, 1-cable jacket; 2-a rubber layer; 3-a hose; 4-an insulating layer; 5-a flame retardant layer; 6-limiting pipe sleeve; 7-steel cord; 8-a protective tube; 9-an insulating layer; 10-a cable core; 11-a flame retardant filler layer; 12-a cavity; 13-flame retardant prevention paint; 14-inlet valve.

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. 1-2, an embodiment of the present invention is provided.

A novel sheath type flame-retardant cable comprises a cable jacket 1, a layer of halogen-free flame-retardant paint 13 is plated on the outer circumferential surface of the cable jacket 1, black smoke and toxic gas are not generated when the flame-retardant paint 13 is burnt, safety performance is improved, burning of the cable can be blocked, a rubber layer 2, a heat preservation layer 4 and a flame-retardant layer 5 are sequentially arranged at the center of an inner cavity of the cable jacket 1 from inside to outside, the flame-retardant layer 5 and a flame-retardant filling layer 11 are both made of halogen-free high-flame-retardant glass fiber materials, the halogen-free high-flame-retardant glass fiber materials are burnt without generating the black smoke and the toxic gas, the safety performance is improved, combustion effects of the cable can be blocked twice, so that the flame-retardant effect of the cable is improved, a hose 3 is arranged in a gap between the rubber layer 2 and the heat preservation layer 4, the hose 3 is composed of a, the top of the hose 3 is provided with an air inlet valve 14, the inner cavity of the hose 3 is pressurized with carbon dioxide gas which can block oxygen, the powerful condition of combustion is reduced, thereby achieving the effect of fire extinguishing, meanwhile, the hose 3 with a spiral structure is convenient to be uniformly distributed on the rubber layer 2, thereby playing a comprehensive role of fire extinguishing and flame retarding, the side wall of the inner cavity of the cable jacket 1 is provided with four limiting pipe sleeves 6, the circumferential outer walls of the four limiting pipe sleeves 6 are all tangent with the outer wall of the protection pipe 8, and the connecting lines of the four limiting pipe sleeves 6 form a square structure, thereby being capable of limiting and fixing the protection pipe 8, meanwhile, the tensile property of the steel ropes 7 in the limiting pipe sleeves 6 is strong, thereby improving the tensile property of the cable, reducing the possibility of breaking and cracking of the cable, the inner cavities of the four limiting pipe sleeves 6 are all provided with the steel ropes 7, the protection tube 8 is oval pipe box, it is big to be oval-shaped protection tube 8 at the radial ascending deformation space of cable, it is best to cable core 10 protection effect, also can carry out spacing fixed to cable core 10 simultaneously, the inner chamber center department of protection tube 8 is provided with cable core 10, the circumference outside of cable core 10 is provided with insulating layer 9, and insulating layer 9 is tangent with the inner chamber lateral wall of protection tube 8, the inner chamber of cable overcoat 1 is provided with fire-retardant filling layer 11, and spacing pipe box 6 all is located fire-retardant filling layer 11 inner chamber with protection tube 8, fire-retardant filling layer 11 inner chamber is provided with four cavities 12, four cavities 12 are located respectively between four spacing pipe boxes 6 and surround protection tube 8.

The working principle is as follows: when the cable is in a fire disaster, the flame-retardant paint 13 outside the cable jacket 1 plays a primary flame-retardant role, the flame-retardant layer 5 performs a secondary flame-retardant role after the flame-retardant paint 13 is burnt through, after the flame-retardant paint 13 is continuously burnt through, when the hose 3 is burnt, the pressurized carbon dioxide in the hose 3 is released, the carbon dioxide can block oxygen, the powerful condition of burning is reduced, so that the fire-extinguishing effect is achieved, meanwhile, the hose 3 with a spiral structure is conveniently and uniformly distributed on the rubber layer 2, so that the comprehensive fire-extinguishing and flame-retardant functions are further played, the flame-retardant effect is good, the flame-retardant filling layer 11 further resists flame, the possibility that the cable core 10 is burnt through is reduced due to multi-stage flame retardance, the service life of the cable is prolonged, the flame-retardant layer 5 and the flame-retardant filling layer 11 are both made of halogen-free high flame-retardant glass fiber materials, no black smoke and toxic gas, the heat preservation layer 4 can play a role in heat preservation and maintain the temperature stability of the inner cavity of the cable jacket 1, the protection pipe 8 is an oval pipe sleeve, the deformation space of the oval protection pipe 8 in the radial direction of the cable is large, the cable core 10 is protected best, the cable core 10 can be limited and fixed, the circumferential outer walls of the four limiting pipe sleeves 6 are tangent to the outer wall of the protecting pipe 8, and the connecting lines of the four limit pipe sleeves 6 form a square structure, so that the limit fixing can be carried out on the protection pipe 8, meanwhile, the tensile property of the steel rope 7 in the limit pipe sleeve 6 is strong, therefore, the tensile resistance of the cable is improved, the possibility of breaking and cracking of the cable is reduced, the deformation degree of the inner cavity of the cable is further improved by the cavity 12, the tensile resistance of the cable is further improved, the insulating layer 9 plays a role in insulating the cable cores 10, and the mutual interference among the cable cores 10 is reduced.

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 novel sheathed flame retarded cable, includes cable jacket (1), its characterized in that: the cable comprises a cable jacket (1), and is characterized in that a rubber layer (2), a heat preservation layer (4) and a flame-retardant layer (5) are sequentially arranged at the center of an inner cavity of the cable jacket (1) from inside to outside, a hose (3) is arranged in a gap between the rubber layer (2) and the heat preservation layer (4), four limiting pipe sleeves (6) are arranged on the side wall of the inner cavity of the cable jacket (1), steel ropes (7) are arranged in the inner cavities of the four limiting pipe sleeves (6), a protection pipe (8) is arranged at the center of the inner cavity of the cable jacket (1), a cable core (10) is arranged at the center of the inner cavity of the protection pipe (8), an insulating layer (9) is arranged on the outer side of the circumference of the cable core (10), the insulating layer (9) is tangent to the side wall of the inner cavity of the protection pipe (8), the inner cavity of the cable jacket (, the inner cavity of the flame-retardant filling layer (11) is provided with four cavities (12), and the four cavities (12) are respectively positioned among the four limiting pipe sleeves (6) and surround the protection pipe (8).

2. The novel sheathed flame-retardant cable according to claim 1, wherein: the outer circumferential surface of the cable jacket (1) is plated with a layer of halogen-free flame-retardant paint (13).

3. The novel sheathed flame-retardant cable according to claim 1, wherein: the hose (3) is composed of a single pipe, the hose (3) is arranged on the outer side of the circumference of the rubber layer (2) in a spiral structure, an air inlet valve (14) is arranged at the top of the hose (3), and carbon dioxide gas is pressurized in an inner cavity of the hose (3).

4. The novel sheathed flame-retardant cable according to claim 1, wherein: the protection pipe (8) is an oval pipe sleeve.

5. The novel sheathed flame-retardant cable according to claim 1, wherein: the circumference outer walls of the four limiting pipe sleeves (6) are tangent to the outer wall of the protection pipe (8), and the connecting lines of the four limiting pipe sleeves (6) form a square structure.

6. The novel sheathed flame-retardant cable according to claim 1, wherein: the flame-retardant layer (5) and the flame-retardant filling layer (11) are both made of halogen-free high-flame-retardant glass fiber materials.