CN214796860U

CN214796860U - High-temperature-resistant composite fireproof medium-voltage cable

Info

Publication number: CN214796860U
Application number: CN202120470316.2U
Authority: CN
Inventors: 蒋临风; 芮逸; 芮文宰
Original assignee: JIANGSU LONG-E CABLE CO LTD
Current assignee: JIANGSU LONG-E CABLE CO LTD
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-11-19
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a high temperature resistant compound fire prevention medium voltage cable, including first insulating layer, the inside wall of first insulating layer bonds there is the anticorrosive coating, the inside wall of anticorrosive coating bonds there is the isolation layer, the inside wall of isolation layer bonds there is the flame retardant coating, the inside wall of flame retardant coating bonds there is the second insulating layer, the inside of second insulating layer is equipped with the dampproof course, the inside symmetry of dampproof course is equipped with three sinle silk, the inside of dampproof course is equipped with toughness fibre layer, and this cable can play certain guard action to the conductor of cable inside through anticorrosive coating, isolation layer, flame retardant coating and sinle silk, has ensured the security of cable, makes the cable under comparatively abominable environment, still can use; this cable passes through the fire prevention granule, can burn totally at the material of flame with the outside, then when burning the fire prevention granule, restraines flame, makes flame slowly diminish until disappearing at last to the safety of cable has been ensured.

Description

High-temperature-resistant composite fireproof medium-voltage cable

Technical Field

The utility model relates to a medium voltage cable technical field specifically is a high temperature resistant compound fire prevention medium voltage cable.

Background

The manufacture of wires and cables is quite different from the way most electromechanical products are produced. Electromechanical products typically employ the assembly of parts into components, and the reassembly of multiple parts into a single product, with the product being metered in units or pieces. The wire and cable are in basic unit of measurement of length. All the electric wires and cables are made by processing conductors, and adding insulation, shielding, cabling, sheath and the like layer by layer on the periphery of the conductors to form electric wire and cable products. The more complex the product structure, the more levels are superimposed.

With the development of society, the demand for electricity is continuously increased, the fire caused by electric cable lines accounts for more than 60% of the fire caused by various kinds of electricity, and the cable is used as an important carrier between power supply equipment and electric equipment,

The requirements of the cable in the aspect of fire safety are gradually emphasized. Wherein, medium voltage cable is the cable that is used for transmission voltage to be 3.6kV to 35kV electric power, and the medium voltage cable that uses under the environment that the fire control requires highly, because when the conflagration takes place, fire-fighting equipment needs power supply just can keep the operation, and medium voltage cable keeps stable work in the conflagration and can improves fire control rescue efficiency, protects people's the security of lives and property.

However, if a conventional medium-voltage cable is burned by flame during use, an insulating layer on the outer side of the cable is damaged, and thus an inner conductor cannot normally transmit power.

Therefore, a high-temperature-resistant composite fireproof medium-voltage cable is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant compound fire prevention medium voltage cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature resistant compound fire prevention medium voltage cable, includes the first insulation layer, the inside wall on first insulation layer bonds and has the anticorrosive coating, the inside wall of anticorrosive coating bonds and has the isolation layer, the inside wall of isolation layer bonds and has the flame retardant coating, the inside wall of flame retardant coating bonds and has the second insulating layer, the inside of second insulating layer is equipped with the dampproof course, the inside symmetry of dampproof course is equipped with three sinle silk, the inside of dampproof course is equipped with toughness fiber layer, toughness fiber layer is located the inside center department of dampproof course, the inside of dampproof course is even is equipped with fire prevention granule, fire prevention granule is located the adjacent one side of three sinle silk.

Preferably: the wire core comprises a high-flame-retardant belting layer, a heat insulation layer, an elastic layer, a third insulation layer and a conductor;

and the outer side wall of the heat insulation layer is uniformly wound with a high flame-retardant belting layer.

Preferably: and an elastic layer is bonded on the inner side wall of the heat insulation layer.

Preferably: and a third insulating layer is bonded on the inner side wall of the elastic layer.

Preferably: and a conductor is arranged on the inner side wall of the third insulating layer.

Preferably: and the outer side wall of the first insulating layer is uniformly bonded with a fire isolating ring.

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

one, this cable passes through anticorrosive coating, isolation layer, flame retardant coating and sinle silk and can play certain guard action to the inside conductor of cable, has ensured the security of cable, makes the cable under comparatively abominable environment, still can use.

Secondly, this cable passes through the fire prevention granule, can burn the material in the outside completely at flame, then when burning the fire prevention granule, restraines flame totally, makes flame slowly diminish until disappearing at last to the safety of cable has been ensured.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a sectional structure of the core of the present invention;

fig. 3 is a left side view structure diagram of the present invention;

fig. 4 is an enlarged schematic view of the structure of the region a in fig. 1 according to the present invention.

In the figure: 1. a first insulating layer; 2. an anticorrosive layer; 3. an isolation layer; 4. a fire barrier layer; 5. a second insulating layer; 6. a moisture barrier; 7. a wire core; 71. a high flame retardant belting layer; 72. a thermal insulation layer; 73. an elastic layer; 74. a third insulating layer; 75. a conductor; 8. fire-resistant particles; 9. a fire insulation ring; 10. a tough fiber 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. 1-4, the present invention provides a technical solution: the utility model provides a high temperature resistant compound fire prevention medium voltage cable, including first insulation layer 1, the inside wall of first insulation layer 1 bonds and has anticorrosive coating 2, the inside wall of anticorrosive coating 2 bonds and has isolation layer 3, the inside wall of isolation layer 3 bonds and has flame retardant coating 4, the inside wall of flame retardant coating 4 bonds and has second insulating layer 5, the inside of second insulating layer 5 is equipped with dampproof course 6, the inside symmetry of dampproof course 6 is equipped with three sinle silk 7, the inside of dampproof course 6 is equipped with toughness fibre layer 10, toughness fibre layer 10 is located the inside center department of dampproof course 6, the inside of dampproof course 6 is even is equipped with fire prevention granule 8, fire prevention granule 8 is located the adjacent one side of three sinle silk 7.

In this embodiment, specifically: the wire core 7 comprises a high flame-retardant belting layer 71, a heat insulation layer 72, an elastic layer 73, a third insulation layer 74 and a conductor 75;

the outer side wall of the heat insulation layer 72 is uniformly wound with a high flame retardant belting layer 71; through the setting, the material of insulating layer 72 is glass fiber, glass fiber is the inorganic non-metallic material of a performance excellence, have comparatively excellent heat-proof quality, insulating layer 72 can be when the insulating layer firing of external temperature is too high or flame to the outside, protect conductor 75, the material of high flame-retardant band layer 71 is the fine glass of high flame-retardant, the fine lateral wall of establishing at insulating layer 72 of winding of high flame-retardant glass, even flame is totally burnt with first insulating layer 1 and second insulating layer 5 in the outside, also can block flame outward through high flame-retardant band layer 71, the condition appearance that flame caused the damage to conductor 75 has been avoided.

In this embodiment, specifically: the inner side wall of the heat insulation layer 72 is adhered with an elastic layer 73; through the arrangement, the elastic layer 73 is made of a thermoplastic elastomer, also called as artificial rubber or synthetic rubber, has the excellent performances of high elasticity, aging resistance and oil resistance of the traditional cross-linked vulcanized rubber, and has the characteristics of convenience in common plastic processing and simple processing mode, the elastic layer 73 can enable the cable to have certain elasticity, and when the conductor 75 expands when heated, the elastic layer 73 can cooperatively expand.

In this embodiment, specifically: a third insulating layer 74 is bonded to the inner side wall of the elastic layer 73; through the above arrangement, the third insulating layer 74 is made of alumina, which is an inorganic substance and a compound with high hardness, and the third insulating layer 74 protects the conductor 75, thereby preventing the conductor 75 from leaking electricity during power transmission.

In this embodiment, specifically: the inner side wall of the third insulating layer 74 is provided with a conductor 75; with the above arrangement, the conductor 75 is used to transmit electric power, and the electric power is delivered to a specified place through the conductor 75.

In this embodiment, specifically: the outer side wall of the first insulating layer 1 is uniformly bonded with a fire isolating ring 9; through the setting, fire-proof ring 9 can play certain guard action to the cable, after external flame ignites first insulating layer 1 and second insulating layer 5 in the cable outside, it burns, if do not carry out corresponding protection, flame can continue to stretch to make whole cable all burnt by flame, through fire-proof ring 9, when flame burns fire-proof ring 9, will be because the burning thing burns completely, thereby self-extinguishing has protected other cables.

Working principle or structural principle: the first insulating layer 1 and the second insulating layer 5 are made of alumina, so that the situation that power supply equipment cannot normally operate due to electric leakage of the conductor 75 can be avoided to the greatest extent, normal use of the whole cable is guaranteed, the anticorrosive layer 2 is made of Glass Fiber Reinforced Plastics (GFRP), namely fiber reinforced plastics (glass fiber reinforced plastics), generally a glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin matrix, and reinforced plastics (glass fiber reinforced plastics or glass fiber reinforced plastics) taking glass fibers or products thereof as reinforcing materials, namely glass fiber reinforced plastics or glass fiber reinforced plastics, different from toughened glass, the anticorrosive layer 2 can isolate outside corrosive liquid or gas to avoid damage to the conductor 75 inside the cable, the insulating layer 3 is made of soft polyvinyl chloride, when the anticorrosive layer 2 is damaged and cannot normally operate, keep apart corrosive liquid or gas through isolation layer 3 outside, thereby guaranteed conductor 75's normal operating, the material of flame retardant coating 4 is high-purity magnesium oxide, high-purity magnesium oxide has good alkali resistance and electrical insulation nature under high temperature, good light transmissivity has, often can regard as high temperature heat-resisting material, after external flame ignites first insulation layer 1, can protect conductor 75 through flame retardant coating 4, avoided receiving the damage because conductor 75, thereby make the unable normal use condition of cable appear, the material of moisture retardant coating 6 is melamine copolymer resin, at melamine, add the resin that third component copolymerization was obtained in the formaldehyde polymerization system, the third component is as follows: phenol, urea, benzoguanamine and the like, compared with melamine resin, the resin obtained by copolymerization improves the cracking resistance and the pollution resistance of the melamine resin, reduces the cost, can isolate most of moisture through the moisture-proof layer 6, avoids the situation of electric leakage caused by the fact that the conductor 75 is wetted, ensures the normal operation of the cable, the fireproof particles 8 are made of magnesium hydroxide which is an inorganic substance and is white amorphous powder or colorless hexagonal prism crystals, the magnesium hydroxide is an inorganic flame-retardant filler of a high polymer-based composite material with good application prospect, when the fireproof particles 8 are burnt by flame, the fireproof particles 8 are broken caused by high temperature, so that the magnesium hydroxide is released, the flame is restrained by the magnesium hydroxide, so that the flame is reduced and then slowly disappears, and the safety of the conductor 75 in the cable is ensured, the material of toughness fibre layer 10 is aramid fiber, aramid fiber is called "aromatic polyamide fibre" entirely, be a novel high-tech synthetic fiber, the superhigh strength has, high-modulus and high temperature resistant, acid and alkali resistant, good performance such as light in weight, toughness fibre layer 10 can be when great bending appears in the cable, restrict the cable, prevent because the bending is great, the condition that leads to cable inner conductor 75 to appear damaging appears, the safety of cable has been ensured, this cable has more excellent high temperature resistant and fire behavior, can use under comparatively abominable environment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high temperature resistant composite fireproof medium voltage cable, comprising a first insulating layer (1), characterized in that: the inside wall of first insulation layer (1) bonds and has anticorrosive coating (2), the inside wall of anticorrosive coating (2) bonds and has isolation layer (3), the inside wall of isolation layer (3) bonds and has flame retardant coating (4), the inside wall of flame retardant coating (4) bonds and has second insulating layer (5), the inside of second insulating layer (5) is equipped with dampproof course (6), the inside symmetry of dampproof course (6) is equipped with three sinle silk (7), the inside of dampproof course (6) is equipped with flexible fiber layer (10), the inside center department that flexible fiber layer (10) are located dampproof course (6), the inside of dampproof course (6) is even is equipped with fire prevention granule (8), fire prevention granule (8) are located three sinle silk (7) adjacent one side.

2. The high temperature resistant composite fireproof medium voltage cable of claim 1, wherein: the cable core (7) comprises a high-flame-retardance belting layer (71), a heat-insulating layer (72), an elastic layer (73), a third insulating layer (74) and a conductor (75);

and a high-flame-retardant belting layer (71) is uniformly wound on the outer side wall of the heat insulation layer (72).

3. The high temperature resistant composite fireproof medium voltage cable of claim 2, wherein: and an elastic layer (73) is adhered to the inner side wall of the heat insulation layer (72).

4. The high temperature resistant composite fireproof medium voltage cable of claim 3, wherein: and a third insulating layer (74) is adhered to the inner side wall of the elastic layer (73).

5. The high temperature resistant composite fireproof medium voltage cable of claim 4, wherein: the inner side wall of the third insulating layer (74) is provided with a conductor (75).

6. The high temperature resistant composite fireproof medium voltage cable of claim 1, wherein: and the outer side wall of the first insulating layer (1) is uniformly adhered with a fire isolating ring (9).