CN213635483U

CN213635483U - Insulating flame-retardant high-voltage power cable

Info

Publication number: CN213635483U
Application number: CN202022743611.9U
Authority: CN
Inventors: 王智平; 陈刚; 房勇; 陈荣华; 王伟君; 赵汉军
Original assignee: JIANGSU YUANFANG CABLE FACTORY CO Ltd
Current assignee: JIANGSU YUANFANG CABLE FACTORY CO Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-06
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses an insulating fire-retardant high voltage power cable relates to the relevant field of electric power, for solving the single problem of present high voltage power cable insulating fire-retardant method. The utility model provides a following technical scheme: the utility model provides an insulating fire-retardant high voltage power cable, includes inner sheath and oversheath, the inboard of inner sheath is provided with around the band, be provided with insulating packing around the inboard in band, the inside of insulating packing is provided with four inner core insulation covers, four the color separation strip is installed in inlaying in the outside of inner core insulation cover, the inside of inner core insulation cover is provided with many first leads the core. The inner liner is provided with a plurality of gas filling grooves, the gas filling grooves are filled with heptafluoropropane gas, when open fire is ignited outside and the inner liner is burnt, compressed heptafluoropropane gas in the plurality of gas filling grooves inside the inner liner can be sprayed out after the outer wall of one side of the inner liner is burnt, and the fire is extinguished in the surrounding environment.

Description

Insulating flame-retardant high-voltage power cable

Technical Field

The utility model relates to an electric power field of being correlated with specifically is an insulating fire-retardant high voltage power cable.

Background

The cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like, which are all composed of single-strand or multi-strand wires and insulating layers and used for connecting circuits, electric appliances and the like, and the high-voltage power cable is one of power cables, is a power cable used for transmitting power between 1kv and 1000kv and is widely applied to power transmission and distribution.

The existing high-voltage power cable can only rely on the material property of the cable to carry out flame retardance, a single insulation flame-retardant method is very passive, the insulation flame-retardant high-voltage power cable is designed, the insulation flame-retardant high-voltage power cable not only has excellent insulation flame-retardant effect, but also has very strong pressure resistance and strength, the phenomenon of fracture cannot occur, and the high-voltage power cable can be buried underground, so that the compression of high strength on the ground can be resisted, and meanwhile, the damage of other external forces can be prevented.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating fire-retardant high voltage power cable to solve the single problem of present high voltage power cable insulating fire-retardant method that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an insulating flame-retardant high-voltage power cable comprises an inner sheath and an outer sheath, wherein a wrapping tape is arranged on the inner side of the inner sheath, insulating filling is arranged on the inner side of the wrapping tape, four inner core insulating sleeves are arranged inside the insulating filling, color separation strips are embedded and installed on the outer sides of the four inner core insulating sleeves, a plurality of first guide cores are arranged inside the inner core insulating sleeves, the first guide cores are made of aluminum metal materials, a plurality of second guide cores are wrapped on the first guide cores, the outer side of the wrapping tape is wrapped with the inner sheath, a metal armor is wrapped on the outer side of the circumference of the inner sheath, a second flame-retardant layer is wrapped on the outer side of the circumference of the metal armor, metal wires are uniformly embedded and arranged on the circumference of the outer sheath, an inner lining layer is arranged on the outer side of the circumference of the second flame-retardant layer, a plurality of gas filling grooves are formed in the inner lining, many the gas filling inslot portion communicates each other through the through-hole, the intraformational gas filling groove of inside lining is provided with the separate layer in the department of being separated by a meter, four the circumference outside parcel of inner core insulating boot has the shielding tape, be provided with first fire-retardant layer between oversheath and the inside lining.

In a further embodiment, the insulating fill is magnesium oxide fireclay.

In a further embodiment, the four dichroic strips are all of different colors.

In a further embodiment, the plurality of gas-filled grooves are filled with gas inside.

In a further embodiment, the gas is heptafluoropropane.

In a further embodiment, the wire is made of a steel material.

In a further embodiment, the second guide core is made of a metal steel material.

In a further embodiment, the inner and outer sheaths are made of a silicone rubber material.

In a further embodiment, the metal armouring is made of steel material.

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

1. the utility model discloses an in, be provided with the inner liner, seted up many gas packing grooves in the inner liner, it is gaseous to be filled with heptafluoropropane at the gas packing inslot intussuseption, when the external world has naked light to fire, when burning the inner liner, burn the back with one side outer wall of inner liner, the seven fluoropropane of compression in its inside many gas packing grooves gaseous will spout, the processing of putting out a fire to its environment on every side, there is the function of initiatively putting out a fire, its flame retardant efficiency will be superior to the high tension cable on the market.

2. The utility model discloses an in, through inlaying the steel wire of installation in the circumference of outer sheath, improve this high tension cable's crushing resistance, can let the oversheath more be difficult to by external force destruction, cooperate the metal armor to guarantee that this cable can resist the pressure of ground high strength in addition and press, can cover in the underground and use, improve the practicality of this cable.

3. The utility model discloses an in, lead the core through setting up the first core of leading of aluminium system and steel second, the outside of cable inner core is around the steel core with the aluminum wire winding, and the steel core has been first to play the effect of add intensity, and the effect of conveying electric energy is first to be played to the aluminium core, can not only guarantee the transmission effect of electric power like this, is difficult to the emergence fracture moreover.

4. The utility model discloses an in, can be convenient for distinguish different cable inner cores through setting up different color separation strips, prevent that the user from obscuring different cable inner cores, cause serious consequence.

Drawings

FIG. 1 is a schematic view of the layered structure of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention;

fig. 3 is an enlarged schematic structural view of a point a in fig. 2 according to the present invention;

fig. 4 is a schematic structural diagram of the position B-B in fig. 2 according to the present invention.

In the figure: 1. a first guide core; 2. a second guide core; 3. color separation strips; 4. an inner core insulation sleeve; 5. insulating and filling; 6. wrapping a tape; 7. an inner sheath; 8. metal armor; 9. an inner liner layer; 10. a first flame retardant layer; 11. an outer sheath; 12. a metal wire; 13. a shielding tape; 14. a gas filled tank; 15. a through hole; 16. a separation layer; 17. a second flame retardant 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.

Referring to fig. 1-4, the present invention provides an embodiment: an insulating flame-retardant high-voltage power cable comprises an inner sheath 7 and an outer sheath 11, wherein the inner side of the inner sheath 7 is provided with a winding belt 6, the inner side of the winding belt 6 is provided with an insulating filler 5, the inside of the insulating filler 5 is provided with four inner core insulating sleeves 4, the four outer sides of the inner core insulating sleeves 4 are embedded with color separation strips 3, the inner core insulating sleeves 4 are internally provided with a plurality of first guide cores 1, each first guide core 1 is made of a metal aluminum material, the metal aluminum material has good conductivity, the first guide cores 1 are wrapped with second guide cores 2, the outer side of the winding belt 6 is wrapped with the inner sheath 7, the outer side of the circumference of the inner sheath 7 is wrapped with a metal armor 8, the outer side of the metal armor 8 is wrapped with a second flame-retardant layer 17, the circumference of the outer sheath 11 is uniformly provided with metal wires 12, the outer side of the second flame-retardant layer 17 is provided with an inner lining layer 9, many gas filling grooves 14 have been seted up to the inside of inner liner 9, and are adjacent through-hole 15 has been seted up between the gas filling groove 14, many the inside through-hole 15 intercommunication each other that passes through of gas filling groove 14, gas filling groove 14 in the inner liner 9 is provided with separate layer 16, four at a distance from a meter the circumference outside parcel of inner core insulating boot 4 has shielding tape 13, be provided with first fire-retardant layer 10 between oversheath 11 and the inner liner 9, can further improve the flame retardant efficiency of this cable through first fire-retardant layer 10 and second fire-retardant layer 17.

Furthermore, the insulating filler 5 is magnesia fireproof mud which has excellent fire resistance and still has good insulating property under the condition of high temperature.

Furthermore, the four color separation strips 3 are different in color, and different cable inner cores can be distinguished through the color separation strips with different colors, so that the problem caused by the fact that wrong cable inner cores are connected is prevented.

Further, the inside of the plurality of gas-filled grooves 14 is filled with gas.

Further, the gas is heptafluoropropane which can reliably extinguish the open fire with low fire extinguishing concentration, and when the open fire occurs and the inner lining layer 9 in the cable is burnt through, the compressed heptafluoropropane gas can be released to extinguish the open fire.

Further, the wire 12 is made of a steel material.

Further, the second guide core 2 is made of a metal steel material.

Further, the inner sheath 7 and the outer sheath 11 are made of a silicon rubber material.

Further, the metal armor 8 is made of steel materials, so that the compression strength of the cable is guaranteed, and the practical effect of the cable is improved.

The working principle is as follows: when in use, the inner liner layer 9 is arranged, a plurality of gas filling grooves 14 are arranged in the inner liner layer 9, heptafluoropropane gas is filled in the gas filling grooves 14, when open fire is ignited outside, when the inner liner layer 9 is burnt, compressed heptafluoropropane gas in the plurality of gas filling grooves 14 inside the inner liner layer 9 can be sprayed out after one side outer wall of the inner liner layer is burnt, the fire extinguishing treatment is carried out on the surrounding environment, the high-voltage cable has the function of active fire extinguishing, the flame retardant effect of the high-voltage cable is superior to that of a high-voltage cable on the market, the steel metal wires 12 are embedded and arranged in the circumference of the outer sheath 11, the pressure resistance of the high-voltage cable is improved, the outer sheath 11 can be prevented from being damaged by external force, the high-strength pressure of the ground can be ensured by matching with the metal armor 8, the high-voltage cable can be paved underground for use, the practicability of the high-voltage cable is improved, the first aluminum conducting core 1 and the second, the outside of cable inner core is around the steel core with the aluminum wire winding, and the steel core has first been played the effect of add intensity, and the effect of conveying electric energy is first played to the aluminum core, can not only guarantee the transmission effect of electric power like this, is difficult to the breaking of taking place moreover, can be convenient for distinguish different cable inner cores through setting up different color separation strip 3, prevents that the user from obscuring the cable inner core, causes serious consequence.

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. An insulating flame-retardant high-voltage power cable comprises an inner sheath (7) and an outer sheath (11), and is characterized in that: the inner side of the inner sheath (7) is provided with a wrapping tape (6), the inner side of the wrapping tape (6) is provided with insulation filling (5), the inside of the insulation filling (5) is provided with four inner core insulation sleeves (4), four color separation strips (3) are embedded and installed on the outer sides of the inner core insulation sleeves (4), a plurality of first guide cores (1) are arranged inside the inner core insulation sleeves (4), the first guide cores (1) are made of aluminum metal materials, a plurality of first guide cores (1) are wrapped with second guide cores (2), the outer side of the wrapping tape (6) is wrapped with the inner sheath (7), the outer side of the circumference of the inner sheath (7) is wrapped with a metal armor (8), the outer side of the metal armor (8) is wrapped with a second flame retardant layer (17), metal wires (12) are uniformly embedded and arranged on the circumference of the outer sheath (11), the circumference outside on the fire-retardant layer of second (17) is provided with inner liner (9), many gas filling groove (14) have been seted up to the inside of inner liner (9), and are adjacent through-hole (15) have been seted up between gas filling groove (14), many gas filling groove (14) are inside to communicate each other through-hole (15), gas filling groove (14) in inner liner (9) are being provided with separate layer (16), four being separated by a meter department and are being provided with shielding tape (13) in the circumference outside parcel of inner core insulating boot (4), be provided with first fire-retardant layer (10) between oversheath (11) and inner liner (9).

2. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the insulating filler (5) is magnesia fireproof mud.

3. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the four color separation strips (3) are different in color.

4. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the plurality of gas-filled grooves (14) are filled with gas.

5. An insulated flame retardant high voltage power cable according to claim 4, characterized in that: the gas is heptafluoropropane.

6. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the wire (12) is made of a steel material.

7. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the second guide core (2) is made of metal steel materials.

8. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the inner sheath (7) and the outer sheath (11) are made of silicon rubber materials.

9. An insulated flame retardant high voltage power cable according to claim 1, characterized in that: the metal armor (8) is made of steel material.