CN218455994U

CN218455994U - Halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable

Info

Publication number: CN218455994U
Application number: CN202221459827.5U
Authority: CN
Inventors: 薛守荣; 薛祥; 王寿权; 高斌
Original assignee: Yangzhou Gold Sunshine Cable Co ltd
Current assignee: Yangzhou Gold Sunshine Cable Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2023-02-07
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a fire-resistant special power cable of steamed low fire-retardant B1 level of cigarette of special power cable technical field, including first around the covering, first around the inside filling layer that is equipped with of covering, be equipped with five groups of conductors in the filling layer, the conductor outer wall is equipped with the mica layer, first around the covering outer wall be equipped with the resistance to compression layer, the resistance to compression layer outer wall is equipped with at a distance from the oxygen layer, it is equipped with the second around the covering to separate the oxygen layer outer wall, the second is equipped with the armor around the covering outer wall, the armor outer wall is equipped with the third around the covering, the third is equipped with the oversheath around the covering outer wall, the utility model discloses a two-layer calcination golden mica tape can improve power cable's fire resistance, first around covering and third all use double-deck steamed low cigarette high fire-retardant fire resistance around the covering, the second uses low cigarette high fire-retardant that fires around the covering, thereby can improve power cable's fire behaviour, the oversheath adopts steamed low cigarette cold-resistant 40 ℃ polyolefin band material of steamed low cigarette cold-resistant, thereby power cable in case takes place the burning, can not produce a large amount of smog and harmful gas.

Description

Halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable

Technical Field

The utility model relates to a power cable technical field specifically is there is not steamed fire-retardant fire-resistant special power cable of low cigarette B1 level.

Background

The special cable is a cable with special purposes, can be used in special occasions, such as high temperature resistance, acid and alkali resistance, termite resistance, and electric wires and cables used in occasions such as ship, airplane, nuclear power station and the like.

The existing special power cable is poor in fire resistance and flame retardance, generates a large amount of smoke and harmful gas once being burnt, is poor in compression resistance, easily breaks an inner conductor, and reduces the service life of the special power cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a there is not steamed fire-resistant special power cable of low fire-retardant B1 level of cigarette to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: there is not steamed fire-resistant special power cable of low fire-retardant B level of cigarette, including first around the covering, it is first around the inside filling layer that is equipped with of covering, be equipped with five groups of conductors in the filling layer, the conductor outer wall is equipped with the mica layer, the mica layer outer wall is equipped with the insulating layer, first be equipped with the compressive layer around the covering outer wall, the compressive layer outer wall is equipped with at a distance from the oxygen layer, it is equipped with the second around the covering to separate the oxygen layer outer wall, the second is equipped with the armor around the covering outer wall, the armor outer wall is equipped with the third around the covering, the third is equipped with the oversheath around the covering outer wall.

Furthermore, the conductor is formed by drawing and twisting an oxygen-free copper rod.

Further, the mica layer is formed by winding two layers of calcined aurum mica tapes.

Furthermore, the filling layer is filled with flame-retardant environment-friendly inorganic paper ropes.

Further, it is first to form by the winding of double-deck steamed low cigarette high fire-retardant band around covering and third, the second is formed by the winding of the high fire-retardant band of low cigarette no halogen around the covering.

Furthermore, be provided with eight groups of strengthening ribs in the resistance to compression layer, eight groups the strengthening rib is in be annular array distribution in the resistance to compression layer, strengthening rib and resistance to compression layer all adopt rubber material.

Furthermore, the oxygen isolation layer adopts ceramic halogen-free low-smoke flame-retardant filler.

Furthermore, the armor layer adopts a double-layer galvanized steel strip.

Further, the outer sheath is made of halogen-free low-smoke flame-retardant cold-resistant-DEG C polyolefin material.

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

1. the utility model discloses a two-layer calcining gold mica tape can improve power cable's fire resistance, and first all use double-deck steamed low cigarette high fire-retardant band around covering and third, and the second uses low cigarette and does not have steamed high fire-retardant band around the covering to can improve power cable's fire behaviour, the oversheath adopts steamed low cigarette fire-retardant cold-resistant-40 ℃ polyolefin material of nothing, thereby in case power cable takes place to burn, can not produce a large amount of smog and harmful gas.

2. This practicality can effectively avoid the armor to lead to the fact to separate the damaged fracture of oxygen layer and influence to separate incrustation when oxygen layer burning around the damage on oxygen layer under the effect of covering to the second to performance index when influencing its burning.

3. This practical anti-compression layer and strengthening rib all adopt the rubber material, increase the inside pliability of power cable, and holistic crushing resistance improves, avoids external force to roll over and decreases inner conductor, causes inner conductor's damage, improves power cable life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a conductor; 2. a mica layer; 3. an insulating layer; 4. a filling layer; 5. a first lapping layer; 6. reinforcing ribs; 7. a pressure resistant layer; 8. an oxygen barrier layer; 9. a second lapping layer; 10. an armor layer; 11. a third lapping layer; 12. an outer sheath.

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 efforts all belong to the protection scope of the present invention.

Example 1:

referring to fig. 1, the present invention provides a technical solution: halogen-free low-smoke flame-retardant B1-level fire-resistant special power cable, including first around covering 5, first around covering 5 inside be equipped with filling layer 4, filling layer 4 adopts fire-retardant environment-friendly inorganic paper rope to fill, be equipped with five groups of conductors 1 in the filling layer 4, five groups of conductors 1 are in be annular array distribution in the filling layer 4, conductor 1 adopts anaerobic copper rod to draw the transposition and forms, conductor 1 outer wall is equipped with mica layer 2, mica layer 2 is twined by two-layer calcination aurum mica tape and forms, can improve power cable's fire resistance, mica layer 2 outer wall is equipped with insulating layer 3, insulating layer 3 adopts crosslinked polyethylene, first around covering 5 outer wall is equipped with resistance to compression layer 7, resistance to compression layer 7 outer wall is equipped with at a distance from oxygen layer 8, at a distance from oxygen layer 8 adoption pottery halogen-free low-smoke flame-retardant filler, at a distance from oxygen layer 8 outer wall and be equipped with second coating 9, second coating 9 outer wall is equipped with armor 10, armor 10 adopts double-layer galvanized steel strip, double-layer galvanized steel strip spiral is around covering, armor 10 outer wall is equipped with third around covering 11 outer wall around covering around the covering, 12 outer sheath adoption of halogen-free flame-retardant polyolefin cold-resistant gas production, thereby in case can not take place a large amount of harmful smoke and the burning of the low smoke.

Referring to fig. 1, the first wrapping layer 5 and the third wrapping layer 11 are formed by winding double-layer halogen-free low-smoke high-flame-retardant wrapping tapes, and the second wrapping layer 9 is formed by winding low-smoke halogen-free high-flame-retardant wrapping tapes, so that the flame retardant property of the power cable can be improved.

Referring to fig. 1, eight sets of reinforcing ribs 6 are arranged in the compression-resistant layer 7, the eight sets of reinforcing ribs 6 are distributed in the compression-resistant layer 7 in an annular array manner, the reinforcing ribs 6 and the compression-resistant layer 7 are made of rubber, so that the flexibility of the interior of the power cable is improved, the overall compression resistance is improved, the damage to the inner conductor caused by the damage of the inner conductor caused by an external force is avoided, and the service life of the power cable is prolonged.

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. There is not steamed fire-retardant B1 level fire-resistant special power cable of low cigarette, including first around covering (5), its characterized in that: the first packing (4) of being equipped with around covering (5) inside, be equipped with five groups of conductors (1) in packing (4), conductor (1) outer wall is equipped with mica layer (2), mica layer (2) outer wall is equipped with insulating layer (3), first be equipped with compressive layer (7) around covering (5) outer wall, compressive layer (7) outer wall is equipped with at a distance from oxygen layer (8), it is equipped with the second around covering (9) to separate oxygen layer (8) outer wall, the second is equipped with armor (10) around covering (9) outer wall, armor (10) outer wall is equipped with the third around covering (11), the third is equipped with oversheath (12) around covering (11) outer wall.

2. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: the conductor (1) is formed by drawing and twisting an oxygen-free copper rod.

3. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: the mica layer (2) is formed by winding two layers of calcined aurum mica tapes.

4. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: the filling layer (4) is filled by adopting a flame-retardant environment-friendly inorganic paper rope.

5. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: first wind covering (5) and third around covering (11) and form by the winding of double-deck steamed low cigarette high fire-retardant band, the second is formed by the winding of low cigarette no halogen high fire-retardant band around covering (9).

6. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: eight groups of reinforcing ribs (6) are arranged in the pressure resistant layer (7), eight groups of reinforcing ribs (6) are distributed in the pressure resistant layer (7) in an annular array mode, and the reinforcing ribs (6) and the pressure resistant layer (7) are made of rubber materials.

7. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: the oxygen isolation layer (8) adopts ceramic halogen-free low-smoke flame-retardant filler.

8. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: the armor layer (10) is made of double-layer galvanized steel strips.

9. The halogen-free low-smoke flame-retardant B1-grade fire-resistant special power cable according to claim 1, characterized in that: the outer sheath (12) is made of halogen-free low-smoke flame-retardant cold-resistant polyolefin material at the temperature of-40 ℃.