CN217113920U

CN217113920U - Novel three-core medium-voltage fire-resistant cable

Info

Publication number: CN217113920U
Application number: CN202220938742.9U
Authority: CN
Inventors: 郭姣
Original assignee: Xinchengrui Cable Co ltd
Current assignee: Xinchengrui Cable Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-02
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses a novel three-core medium-voltage fire-resistant cable, which relates to the technical field of cables and comprises a low-smoke halogen-free sheath, wherein the inner surface of the low-smoke halogen-free sheath is provided with a first low-smoke halogen-free glass fiber tape, the inner surface of the first low-smoke halogen-free glass fiber tape is provided with a steel tape armor, the inner surface of the steel tape armor is provided with a fire-resistant component, the inner surface of the fire-resistant component is provided with a separation component, the glass fiber rope is filled outside a first resistance sleeve, a second resistance sleeve and a third resistance sleeve to prevent the conductor from short-circuit spontaneous combustion when a fire disaster happens, and the ceramic fire-resistant composite tape, an oxygen isolation layer and the second low-smoke halogen-free glass fiber tape are matched to be used together to bear higher temperature, so that the cable has strong fire resistance, the cable cores are wrapped by the first resistance sleeve, the second resistance sleeve and the third resistance sleeve, and the cable cores can be prevented from being conducted to other two groups of cable cores when the cable works, the risk that the wire core is short-circuited by high temperature is avoided.

Description

Novel three-core medium-voltage fire-resistant cable

Technical Field

The utility model relates to the technical field of cables, specifically a novel three-core middling pressure fire resisting cable.

Background

At present, the cable is an important carrier for distributing electric energy transmitted in a power line, the performance of the cable in a fire disaster has great influence on the safety of people, the existing cable is easy to melt and damage under the condition of high temperature or fire disaster, and then short circuit is caused, a plurality of electric wires inside the existing cable are tightly attached to each other, heat generated by the cable in working can be mutually transmitted, the temperature rise between the electric wires is accelerated, other electric wires can be seriously damaged, and therefore, the novel three-core medium-voltage fire-resistant cable is provided.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a novel three-core middling pressure fire resisting cable has solved the problem that above background art provided.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a novel three-core medium-voltage fire-resistant cable comprises a low-smoke halogen-free sheath, wherein a first low-smoke halogen-free glass fiber tape is arranged on the inner surface of the low-smoke halogen-free sheath, a steel tape armor is arranged on the inner surface of the first low-smoke halogen-free glass fiber tape, a fire-resistant component is arranged on the inner surface of the steel tape armor, and a blocking component is arranged on the inner surface of the fire-resistant component;

the fireproof component comprises a ceramic fireproof composite belt arranged on the inner surface of a steel belt armor, an oxygen isolation layer is arranged inside the ceramic fireproof composite belt, a second low-smoke halogen-free glass fiber belt is arranged inside the oxygen isolation layer, and a glass fiber rope is arranged on the inner surface of the second low-smoke halogen-free glass fiber belt;

the separation assembly comprises a first resistance sleeve, a second resistance sleeve and a third resistance sleeve which are arranged on the inner surface of the glass fiber rope, and the first resistance sleeve, the second resistance sleeve and the third resistance sleeve are connected with a resistance body together.

As a further technical scheme of the utility model, hinder body, first internal surface that hinders cover and second and hinder the cover and all be provided with copper strips shielding, three copper strips shielding's internal surface all is provided with insulation shield, and is three insulation shield's internal surface all is provided with insulating.

As a further technical scheme of the utility model, it is three insulating internal surface all is provided with the conductor shield, and is three the internal surface of conductor shield all is provided with a plurality of groups conductor.

As a further technical scheme of the utility model, the internal surface of glass fiber rope hinders the cover with first, the second hinders the cover and the third hinders the surface size phase-match that overlaps.

As a further technical scheme of the utility model, the first cover second that hinders the cover and the third hinders the size of cover and equals.

As a further technical scheme of the utility model, first hinder cover, second hinder the cover and the third hinders the internal surface of cover and every copper strips shielding's surface dimension size looks adaptation.

Advantageous effects

The utility model provides a novel three-core middling pressure fire resisting cable. Compared with the prior art, the method has the following beneficial effects:

1. the utility model provides a novel three-core middling pressure fire resisting cable, fill at first cover that hinders through the glass fiber rope, the second hinders the outside that cover and third hinder the cover, conductor temperature rises and makes its short circuit spontaneous combustion when can preventing to conflagration out, can effectually prevent burning out of cable, and cooperation pottery fire resisting composite band, separate oxygen layer and the use of second low smoke and zero halogen glass fiber area together and can bear higher temperature, and the cable can not burn, very strong fire resistance has, and low smoke and zero halogen sheath sets up externally with first low smoke and zero halogen glass fiber area, can prevent outside surface combustion.

2. The utility model provides a novel three-core middling pressure fire resisting cable, hinders the cover through first cover, second and the third hinders the cover with copper tape shield, insulation, conductor shield and conductor parcel, can prevent that this equipment from rising at the during operation temperature and conduct it for other two sets of conductors, has avoided the conductor to receive the risk of high temperature short circuit.

Drawings

Fig. 1 is a schematic view of a novel structure of a novel three-core medium-voltage fire-resistant cable;

FIG. 2 is a schematic structural diagram of a side view of a fire-resistant component in a novel three-core medium-voltage fire-resistant cable;

fig. 3 is a schematic structural diagram of a barrier component in a novel three-core medium-voltage fire-resistant cable.

In the figure: 1. a low smoke zero halogen sheath; 2. a first low smoke zero halogen fiberglass tape; 3. steel tape armoring; 4. a refractory component; 41. ceramization refractory composite band; 42. an oxygen barrier layer; 43. a second low smoke zero halogen fiberglass tape; 44. a glass fiber rope; 5. a barrier assembly; 51. a resistor; 52. a first resistance sleeve; 53. a second resistance sleeve; 54. a third resistance sleeve; 6. shielding by a copper strip; 7. insulating shielding; 8. insulating; 9. a conductor shield; 10. a conductor.

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, the utility model provides a novel three-core medium voltage fire-resistant cable technical scheme: the utility model provides a novel three-core middling pressure fire resisting cable, including low smoke and zero halogen sheath 1, the internal surface of low smoke and zero halogen sheath 1 is provided with first low smoke and zero halogen glass fiber band 2, the internal surface of first low smoke and zero halogen glass fiber band 2 is provided with steel tape armoring 3, the internal surface of steel tape armoring 3 is provided with fire resisting component 4, fire resisting component 4's internal surface is provided with separation subassembly 5, hinder body 51, the internal surface that first cover 52 and the second of hindering hinders cover 53 all is provided with copper strips shielding 6, the internal surface of three copper strips shielding 6 all is provided with insulation shielding 7, the internal surface of three insulation shielding 7 all is provided with insulating 8, the internal surface of three insulating 8 all is provided with conductor shielding 9, the internal surface of three conductor shielding 9 all is provided with a plurality of group conductor 10.

Referring to fig. 2, the fire-resistant assembly 4 includes a ceramic fire-resistant composite belt 41 disposed on an inner surface of the steel-tape armor 3, an oxygen-insulating layer 42 is disposed inside the ceramic fire-resistant composite belt 41, a second low-smoke halogen-free glass fiber belt 43 is disposed inside the oxygen-insulating layer 42, a glass fiber rope 44 is disposed on an inner surface of the second low-smoke halogen-free glass fiber belt 43, and an inner surface of the glass fiber rope 44 is matched with outer surface dimensions of the first blocking sleeve 52, the second blocking sleeve 53 and the third blocking sleeve 54.

When fire-resistant subassembly 4's in-service use, hinder cover 53 and third through the setting of second low smoke and zero halogen glass fiber band 43 and glass fiber rope 44 and hinder cover 54 department at first, second, can play fire-retardant, high temperature resistant, the effect of fire prevention, the effect of protection conductor 10, and the compound area 41 of pottery fire-resistant and can prevent to provide the condition for the burning with separating oxygen layer 42, but multilayer protection sinle silk.

Referring to fig. 3, the blocking assembly 5 includes a first blocking sleeve 52, a second blocking sleeve 53 and a third blocking sleeve 54 disposed on the inner surface of the glass fiber rope 44, the first blocking sleeve 52, the second blocking sleeve 53 and the third blocking sleeve 54 are connected to a blocking body 51, the sizes of the first blocking sleeve 52, the second blocking sleeve 53 and the third blocking sleeve 54 are equal, and the sizes of the inner surfaces of the first blocking sleeve 52, the second blocking sleeve 53 and the third blocking sleeve 54 are matched with the sizes of the outer surfaces of the copper tape shields 6.

When the blocking assembly 5 is actually used, the first blocking sleeve 52, the second blocking sleeve 53 and the third blocking sleeve 54 have the characteristics of high temperature resistance and flame retardance, so that the wire core can be further protected, the first blocking sleeve 52, the second blocking sleeve 53 and the third blocking sleeve 54 are sleeved outside the wire core, the wire core can be prevented from being conducted to other two groups due to temperature rise during working, and the risk that the conductor is short-circuited at high temperature is avoided

The utility model discloses a theory of operation: when a fire disaster occurs, the low-smoke halogen-free sheath 1 and the first low-smoke halogen-free glass fiber band 2 can prevent the outer surface from burning, and the ceramic fireproof composite band 41, the oxygen isolation layer 42, the second low-smoke halogen-free glass fiber band 43 and the glass fiber rope 44 have the effects of fire prevention, flame retardance, high temperature resistance and heat insulation, so that the burning of the wire core is further protected; the first resistance sleeve 52, the second resistance sleeve 53 and the third resistance sleeve 54 have the characteristics of high temperature resistance and flame retardance, so that the wire core can be further protected, the first resistance sleeve 52, the second resistance sleeve 53 and the third resistance sleeve 54 are sleeved outside the wire core, the wire core can be prevented from being conducted to other two groups due to the fact that the temperature of the wire core rises during working, and the risk that a conductor is short-circuited at high temperature is avoided.

Claims

1. A novel three-core medium-voltage fire-resistant cable comprises a low-smoke halogen-free sheath (1), and is characterized in that a first low-smoke halogen-free glass fiber tape (2) is arranged on the inner surface of the low-smoke halogen-free sheath (1), a steel tape armor (3) is arranged on the inner surface of the first low-smoke halogen-free glass fiber tape (2), a fire-resistant component (4) is arranged on the inner surface of the steel tape armor (3), and a blocking component (5) is arranged on the inner surface of the fire-resistant component (4);

the fireproof component (4) comprises a ceramic fireproof composite belt (41) arranged on the inner surface of the steel belt armor (3), an oxygen insulating layer (42) is arranged inside the ceramic fireproof composite belt (41), a second low-smoke halogen-free glass fiber belt (43) is arranged inside the oxygen insulating layer (42), and a glass fiber rope (44) is arranged on the inner surface of the second low-smoke halogen-free glass fiber belt (43);

the blocking assembly (5) comprises a first blocking sleeve (52), a second blocking sleeve (53) and a third blocking sleeve (54) which are arranged on the inner surface of the glass fiber rope (44), and the first blocking sleeve (52), the second blocking sleeve (53) and the third blocking sleeve (54) are connected with a blocking body (51) together.

2. The novel three-core medium-voltage fire-resistant cable according to claim 1, wherein the inner surfaces of the resistor (51), the first resistor sleeve (52) and the second resistor sleeve (53) are all provided with copper tape shields (6), the inner surfaces of the three copper tape shields (6) are all provided with insulation shields (7), and the inner surfaces of the three insulation shields (7) are all provided with insulation (8).

3. A new three-core medium voltage fire resistant cable according to claim 2, characterized in that the inner surfaces of three said insulation (8) are provided with conductor shields (9), and the inner surfaces of three said conductor shields (9) are provided with several groups of conductors (10).

4. A new three-core medium voltage fire resistant cable according to claim 1, characterized by the fact that the inner surface of the glass fiber rope (44) matches the outer surface dimensions of the first (52), second (53) and third (54) resistance sleeves.

5. A new three-core medium-voltage fire-resistant cable according to claim 1, characterized in that said first (52), second (53) and third (54) resistant sheaths are of equal size.

6. The new three-core medium voltage fire resistant cable according to claim 1, characterized in that the inner surface of the first (52), second (53) and third (54) resistance sleeves is adapted to the outer surface dimensions of each copper tape shield (6).