CN214847861U

CN214847861U - Molded line stranded conductor high-flame-retardant B1-grade isolated fireproof cable

Info

Publication number: CN214847861U
Application number: CN202120869728.3U
Authority: CN
Inventors: 杨孟衡
Original assignee: Guangzhou Xinxing Cables Industry Co ltd
Current assignee: Guangzhou Xinxing Cables Industry Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-11-23
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor, including the outer jacket, the outer jacket inboard is equipped with outer fire-retardant layer, outer fire-retardant layer inboard is equipped with at a distance from the oxygen layer, at a distance from the oxygen layer for closely knit crowded package outside outer fire-retardant layer, at a distance from the oxygen layer inboard and be equipped with the ceramization silastic tape, ceramization silastic tape inboard is equipped with high fire-retardant area, at high fire-retardant area outside around the oxygen layer, high fire-retardant inboard is equipped with four molded lines transposition conductor, molded lines transposition conductor is evenly arranged from top to bottom and from left to right, the molded lines transposition conductor outside all is equipped with the flame retardant coating, the flame retardant coating outside all is equipped with the metal sheath, all be equipped with the filling layer between high fire-retardant area and the molded lines transposition conductor, the filling layer comprises inorganic fire-retardant glass fiber rope; the utility model relates to a high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor has easily the installation and lays, production efficiency is high, very strong anti external mechanical shock's advantage.

Description

Molded line stranded conductor high-flame-retardant B1-grade isolated fireproof cable

Technical Field

The utility model relates to the technical field of cables, specifically be a high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor.

Background

With the rapid development of civil buildings and power systems, the power utilization guarantee requirements on key facilities are higher and higher, the cable is required to have the capability of transmitting power uninterruptedly, but also requires the cable to have the characteristics of fire prevention, environmental protection, easy laying and the like, most of the existing markets use the traditional metal oxide insulation fireproof cable, or the inorganic mineral insulating metal sheath fireproof cable or the flexible inorganic mineral insulating cable, although the cables have fireproof characteristics, but some of the cables are not easy to install and lay, have low production efficiency and high cable cost, have weak capability of resisting external mechanical impact in the fireproof process, according to the defects of the existing fireproof cable, the fireproof cable is provided, has lower cost, is easy to produce, lay and install, and the molded line stranded conductor high-flame-retardant B1-grade isolated fireproof cable has strong external mechanical impact resistance.

Disclosure of Invention

An object of the utility model is to provide a high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor has easily the installation and lays, production efficiency is high, very strong anti external mechanical shock's advantage, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor, includes the outer jacket, the outer jacket inboard is equipped with outer fire-retardant layer, outer fire-retardant layer inboard is equipped with separates the oxygen layer, separate the oxygen layer for closely knit crowded package outside fire-retardant layer, separate oxygen in situ side and be equipped with the ceramization silastic band, ceramization silastic band inboard is equipped with high fire-retardant area, separate the oxygen layer outward around the package at high fire-retardant area, high fire-retardant in-band side is equipped with four molded lines transposition conductor, the molded lines transposition conductor is from top to bottom controlled align to grid, the molded lines transposition conductor outside all is equipped with the flame retardant coating, the flame retardant coating outside all is equipped with interior fire-retardant layer, interior flame retardant layer outside all is equipped with the metal sheath.

Preferably, a filling layer is arranged between the high-flame-retardant belt and the molded line stranded conductor, and the filling layer is composed of inorganic flame-retardant glass fiber ropes.

Preferably, the molded line stranded conductor is stranded by anaerobic copper wires, the number of the monofilaments is 6-54, the center wire is round, the other monofilaments are in a tile shape, the tile-shaped monofilaments are stranded around the round monofilaments and stranded into a compact round structure, and the compression coefficient is 0.98.

Preferably, the refractory layer material is trinity synthetic mica tape, and the tape is thick 0.13 ~ 0.2mm, and the width is 6 ~ 50mm, overlaps around package 3 ~ 4 layers, and every layer takes the lid rate to be 15% ~ 25%.

Preferably, the inner flame-retardant layer is a glass fiber tape, the tape thickness is 0.17-0.3 mm, the tape width is 15-50 mm, 1-2 layers of overlapping wrapping are carried out, and the covering rate of each layer is 15% -20%.

Preferably, the metal protective layer is a longitudinally-wrapped welding smooth aluminum strip, the thickness of the aluminum strip is 0.4-1.2 mm, and the bandwidth is 50-110 mm.

Preferably, the high-flame-retardant belt is wrapped with a ceramic silicon rubber belt, the belt thickness is 0.2-0.8 mm, the belt width is 30-70 mm, 1-2 layers of overlapping wrapping are carried out, and the overlapping rate of each layer is 15% -20%.

Preferably, the outer protective layer is a halogen-free low-smoke flame-retardant B1-grade polyolefin sheath material, extrusion pipe type extrusion is adopted, and the thickness of the sheath is 1.5-4.0 mm.

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

1. this conductor of high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor has adopted molded lines transposition conductor, this conductor stable in structure, the external diameter is little, make each layer material of cable reduce, practice thrift the cost, the cable all adopts inorganic fire-retardant material except outer jacket, make the cable have excellent fire-retardant fire behavior, and the outer jacket of cable has adopted halogen-free low smoke fire-retardant B1 level polyolefin sheath material, make the cable can crust rapidly and prevent flame from not stretching in the combustion process, the cable passes through the configuration optimization combination, make the high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor have the environmental protection, the cost is low relatively, high performance, fire prevention, acidproof, alkali, excellent properties such as salt fog and have the fire control effect cable quality and improve greatly.

Drawings

Fig. 1 is the utility model discloses a high fire-retardant B1 grade isolated form fireproof cable's of shaped wire transposition conductor overall structure sketch map.

The figure is marked with: 1. a molded wire stranded conductor; 2. a refractory layer; 3. an inner flame retardant layer; 4. a metal protective layer; 5. a filling layer; 6. a high flame retardant tape; 7. a ceramized silicone rubber belt; 8. an oxygen barrier layer; 9. an outer flame retardant layer; 10. an outer jacket.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, a B1 grade isolated fireproof cable with high flame retardancy for profile stranded conductor comprises an outer protective layer 10, an outer flame retardant layer 9 is arranged on the inner side of the outer protective layer 10, the outer protective layer 10 is a B1 grade polyolefin sheath material without halogen and low smoke flame retardant, extruded by a tube extrusion method, the thickness of the sheath is 1.5-4.0 mm, an oxygen barrier layer 8 is arranged on the inner side of the outer flame retardant layer 9, the oxygen barrier layer 8 is extruded oxygen-isolated mud by an extrusion method, the oxygen barrier layer 8 is densely and tightly wrapped outside the outer flame retardant layer 9, a silicon ceramic rubber belt 7 is arranged on the inner side of the oxygen barrier layer 8, a high flame retardant belt 6 is arranged on the inner side of the silicon ceramic rubber belt 7, the oxygen barrier layer 8 is wrapped outside the high flame retardant belt 6, the high flame retardant belt 6 is wrapped outside the silicon ceramic rubber belt 7, the belt thickness is 0.2-0.8 mm, the bandwidth is 30-70 mm, 1-2 layers of overlapping stranded conductor are formed, the coverage rate of each copper wire is 15% -20%, four conductors 1 are arranged inside the high flame retardant belt 6, and the twisted conductor is oxygen-free, 6-54 monofilaments are provided, the central filament is round, the rest monofilaments are tile-shaped, the tile-shaped monofilaments are twisted around the round monofilaments and are twisted into a compact round structure, the compression coefficient is 0.98, the molded line twisted conductors 1 are uniformly arranged up and down, left and right, the outer sides of the molded line twisted conductors 1 are respectively provided with a flame retardant coating 2, the flame retardant coating 2 is made of a three-in-one synthetic mica tape, the tape thickness is 0.13-0.2 mm, the width is 6-50 mm, 3-4 layers of overlapping wrapping packages are formed, the overlapping coverage rate of each layer is 15-25%, the outer sides of the flame retardant coatings 2 are respectively provided with an inner flame retardant coating 3, the inner flame retardant coating 3 is a glass fiber tape, the tape thickness is 0.17-0.3 mm, the tape width is 15-50 mm, the overlapping wrapping packages are 1-2 layers, the overlapping coverage rate of each layer is 15-20%, the outer sides of the inner flame retardant coating 3 are respectively provided with a metal protective layer 4, the metal 4 is a longitudinal wrapped welding smooth aluminum tape, the aluminum tape is 0.4-1.2 mm, the tape thickness is 50-110 mm, and 5 filling layers are uniformly arranged between the high flame retardant tape and the molded line twisted conductors 1, the filling layer 5 consists of inorganic flame-retardant glass fiber ropes;

specifically, molded lines stranded conductor 1 has been adopted, this conductor structure is stable, the external diameter is little, make each layer of material of cable reduce, the cost is saved, the cable is except outer jacket 10, inorganic flame retardant material has all been adopted, make the cable have excellent fire-retardant fire behavior, and outer jacket 10 of cable has adopted the fire-retardant B1 level polyolefin sheath material of halogen-free low smoke, make the cable can crust rapidly and prevent flame from not spreading in the combustion process, the cable passes through the configuration optimization combination, make 1 high fire-retardant B1 level isolated form fireproof cable of molded lines stranded conductor have the environmental protection, the cost is relatively low, high performance, prevent fires, it is acidproof, alkali, excellent properties such as salt fog and have the fire control effect cable quality and improve greatly.

The working principle is as follows: the utility model relates to a high flame-retardant B1 grade isolation type fireproof cable of molded wire stranded conductor, which transmits current through the molded wire stranded conductor 1 during the use process, the conductor has stable structure and small outer diameter, reduces the material consumption of each layer of the cable, saves the cost, resists heat and damages by the flame retardant coating 2 when flame appears due to overheating, ensures the flame retardant effect by the inner flame retardant coating 3, when external flame occurs, the halogen-free low-smoke flame-retardant B1-grade polyolefin sheath material of the outer protective layer 10 can quickly crust and prevent the flame from spreading when the flame occurs, and the flame is prevented by the outer flame-retardant layer 9, the oxygen isolation layer 8 is used for isolating oxygen and extinguishing flame, the flame-retardant and fireproof performance is ensured by the ceramic silicon rubber belt 7 and the high flame-retardant belt 6, and when external mechanical impact occurs, the metal protective layer 4 and the filling layer 5 ensure the impact resistance.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high fire-retardant B1 level isolated form fireproof cable of molded lines transposition conductor which characterized in that: including outer jacket (10), outer jacket (10) inboard is equipped with outer fire-retardant layer (9), outer fire-retardant layer (9) inboard is equipped with separates oxygen layer (8), separate oxygen layer (8) for closely knit crowded package outside fire-retardant layer (9), it is equipped with ceramization silicon rubber area (7) to separate oxygen layer (8) inboard, ceramization silicon rubber area (7) inboard is equipped with high fire-retardant area (6), separate oxygen layer (8) outward around the package at high fire-retardant area (6), high fire-retardant area (6) inboard is equipped with four molded lines transposition conductor (1), the molded lines transposition conductor (1) is controlled and is evenly arranged from top to bottom, the molded lines transposition conductor (1) outside all is equipped with flame retardant coating (2), flame retardant coating (3) in all being equipped with in the flame retardant coating (2) outside, interior flame retardant coating (3) outside all is equipped with metal protective layer (4).

2. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: and a filling layer (5) is arranged between the high flame-retardant belt (6) and the molded line stranded conductor (1), and the filling layer (5) is composed of inorganic flame-retardant glass fiber ropes.

3. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: the molded line stranded conductor (1) is formed by stranding oxygen-free copper wires, the number of the monofilaments is 6-54, the center wire is round, the other monofilaments are in a tile shape, the tile-shaped monofilaments are stranded around the round monofilaments and stranded into a compact round structure, and the compression coefficient is 0.98.

4. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: the flame retardant coating (2) material is trinity synthetic mica tape, and the tape thickness is 0.13 ~ 0.2mm, and the width is 6 ~ 50mm, overlaps around package 3 ~ 4 layers, and every layer takes the lid rate to be 15% ~ 25%.

5. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: the inner flame-retardant layer (3) is a glass fiber tape, the tape thickness is 0.17-0.3 mm, the tape width is 15-50 mm, 1-2 layers of overlapping wrapping are carried out, and the overlapping rate of each layer is 15% -20%.

6. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: the metal protective layer (4) is a longitudinally wrapped and welded smooth aluminum strip, the thickness of the aluminum strip is 0.4-1.2 mm, and the bandwidth is 50-110 mm.

7. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: the high-flame-retardant belt (6) is wrapped with the ceramic silicon rubber belt (7), the belt thickness is 0.2-0.8 mm, the belt width is 30-70 mm, 1-2 layers of overlapping wrapping are carried out, and the overlapping rate of each layer is 15% -20%.

8. The type wire stranded conductor high flame retardant B1 grade isolated fireproof cable of claim 1, wherein: the outer jacket (10) is a halogen-free low-smoke flame-retardant B1-grade polyolefin jacket material, is extruded in an extrusion tube manner, and has the jacket thickness of 1.5-4.0 mm.