CN218730049U

CN218730049U - Low-smoke flame-retardant B1-level cable

Info

Publication number: CN218730049U
Application number: CN202122905629.9U
Authority: CN
Inventors: 张伟强; 罗进
Original assignee: Hunan C Kingdom Cable Co ltd
Current assignee: Hunan C Kingdom Cable Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2023-03-24
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a fire-retardant B1 level cable of low cigarette, including leading wire, the outside setting of leading wire is by first fire-retardant layer, the outside on first fire-retardant layer is provided with first cladding layer, the outside of first cladding layer is provided with many auxiliary conductors, auxiliary conductor's the outside is provided with the second cladding layer, the outside of second cladding layer is provided with the fire-retardant layer of second, the outside on the fire-retardant layer of second is provided with the protective layer, the outside of protective layer is provided with a plurality of wear-resisting archs, be provided with the filling layer between first cladding layer and the second cladding layer. The utility model discloses in, realize main flame retardant efficiency through the first fire-retardant layer, the fire-retardant layer of second and the filling layer that set up, first fire-retardant layer and the fire-retardant layer of second are closely twined in the outside of leading wire and second cladding layer by the fire-retardant rope of fire-retardant low smoke and zero halogen polyolefin material, and the filling layer adopts alkali-free glass fiber material, the holistic fire resistance of improvement cable that can very big degree.

Description

Low-smoke flame-retardant B1-level cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a fire-retardant B1 level cable of low cigarette.

Background

With the improvement of flame-retardant requirements of people, the flame-retardant cable is widely applied and has obvious effect. In recent years, the construction and fire department requires that the places with dense personnel, such as subways, airports, high-rise buildings and the like, adopt flame-retardant B1-grade cables with higher flame-retardant grades.

The existing common flame-retardant armored comprehensive sheath railway signal cable consists of a conductor, an insulating comprehensive sheath, an armor layer and an outer sheath, wherein a polyethylene sleeve material in the insulating comprehensive sheath of the cable is a polyethylene inflammable substance, the outer sheath is made of a flame-retardant sheath material, the flame-retardant capability is poor after the cable meets fire, the smoke production total amount of the polyethylene material is large after the polyethylene material meets the fire, the heat release rate and the heat release total amount performance are poor, and the technical requirements of flame-retardant B1 level cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a low-smoke flame-retardant B1-level cable.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a fire-retardant B1 level cable of low cigarette, includes leading wire, leading wire's the outside is provided with first fire-retardant layer, the outside on first fire-retardant layer is provided with first cladding layer, the outside of first cladding layer is provided with many auxiliary conductors, auxiliary conductors's the outside is provided with second cladding layer, the outside of second cladding layer is provided with the fire-retardant layer of second, the outside on the fire-retardant layer of second is provided with the protective layer, the outside of protective layer is provided with a plurality of wear-resisting archs, be provided with the filling layer between first cladding layer and the second cladding layer.

Furthermore, the first flame-retardant layer and the second flame-retardant layer respectively comprise a plurality of flame-retardant ropes, and the flame-retardant ropes are respectively spirally and tightly wound on the outer sides of the main guide wire and the second coating layer.

Furthermore, the flame-retardant rope is made of flame-retardant low-smoke halogen-free polyolefin.

Furthermore, the filling layer is made of alkali-free glass fiber.

Furthermore, the protective layer and the wear-resistant protrusions are made of polyvinyl chloride.

Furthermore, the main lead and the auxiliary lead are made of annealed tinned soft copper wires.

The utility model has the advantages that:

the utility model discloses when using, this low fire-retardant B1 level cable of cigarette realizes main flame retardant efficiency through the first fire-retardant layer, the fire-retardant layer of second and the filling layer that set up, and first fire-retardant layer and the fire-retardant layer of second are closely twined in the outside of leading wire and second cladding by the fire-retardant rope of fire-retardant low smoke and zero halogen polyolefin material, and the filling layer adopts alkali-free glass fiber material, the holistic fire retardance of improvement cable that can very big degree.

Drawings

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

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

fig. 3 is a cross-sectional view of the present invention.

Illustration of the drawings:

1. a main conductor; 2. a first flame retardant layer; 3. a first cladding layer; 4. an auxiliary wire; 5. a second cladding layer; 6. a second flame retardant layer; 7. a protective layer; 8. wear-resistant protrusions; 9. and (5) filling the layer.

Detailed Description

Fig. 1 to 3 show, relate to a fire-retardant B1 level cable of low smoke, including leading wire 1, the outside of leading wire 1 is provided with first fire-retardant layer 2, the outside of first fire-retardant layer 2 is provided with first cladding layer 3, the outside of first cladding layer 3 is provided with many auxiliary conductors 4, the outside of auxiliary conductor 4 is provided with second cladding layer 5, the outside of second cladding layer 5 is provided with the fire-retardant layer 6 of second, the outside of the fire-retardant layer 6 of second is provided with protective layer 7, the outside of protective layer 7 is provided with a plurality of wear-resisting archs 8, be provided with filling layer 9 between first cladding layer 3 and the second cladding layer 5.

When using low fire-retardant B1 level cable of cigarette, first fire-retardant layer 2 through setting up, main flame retardant efficiency is realized to fire-retardant layer 6 of second and filling layer 9, first fire-retardant layer 2 and the fire-retardant layer 6 of second are closely twined in the outside of leading wire 1 and second cladding 5 by the fire-retardant rope of fire-retardant low smoke and zero halogen polyolefin material, filling layer 9 adopts no alkali glass fiber material, the holistic fire resistance of improvement cable that can very big degree, the protective layer 7 and the wearability that wear-resisting arch 8 can improve the cable that set up, and protective layer 7 and wear-resisting arch 8 are the polyvinyl chloride material and have good fire resistance.

In the further scheme, first fire-retardant layer 2 and the fire-retardant layer 6 of second all include many fire-retardant ropes, and fire-retardant rope respectively spiral closely twines in the outside of leading wire 1 and second cladding 5, and the leakproofness of cable can be increased to first cladding 3 and the second cladding 5 that set up.

In a further scheme, the flame-retardant rope is made of flame-retardant low-smoke halogen-free polyolefin, the flame-retardant low-smoke halogen-free polyolefin is good in environmental protection performance and non-toxic and low-smoke, and the flame-retardant rope is tightly wound on the outer sides of the main guide wire 1 and the second coating layer 5 to improve the overall flame retardance of the cable.

In a further scheme, the filling layer 9 is made of alkali-free glass fiber, and the alkali-free glass fiber is high in elastic coefficient, good in rigidity, inorganic fiber, non-combustible and good in chemical resistance.

In a further scheme, the protective layer 7 and the wear-resistant protrusions 8 are made of polyvinyl chloride, and the protective layer 7 and the wear-resistant protrusions 8 can improve the wear resistance of the cable.

In a further scheme, the main lead 1 and the auxiliary lead 4 are made of annealed tinned soft copper wires.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a fire-retardant B1 level cable of low cigarette, includes main traverse line (1), its characterized in that: the outside of leading wire (1) is provided with first fire-retardant layer (2), the outside of first fire-retardant layer (2) is provided with first cladding layer (3), the outside of first cladding layer (3) is provided with many auxiliary conductor (4), the outside of auxiliary conductor (4) is provided with second cladding layer (5), the outside of second cladding layer (5) is provided with the fire-retardant layer of second (6), the outside of the fire-retardant layer of second (6) is provided with protective layer (7), the outside of protective layer (7) is provided with a plurality of wear-resisting archs (8), be provided with filling layer (9) between first cladding layer (3) and second cladding layer (5).

2. A low smoke flame retardant B1 grade cable according to claim 1, wherein: the first flame-retardant layer (2) and the second flame-retardant layer (6) comprise a plurality of flame-retardant ropes, and the flame-retardant ropes are respectively spirally and tightly wound on the outer sides of the main conductor (1) and the second coating layer (5).

3. A low smoke flame retardant B1 grade cable according to claim 2, characterized in that: the flame-retardant rope is made of flame-retardant low-smoke halogen-free polyolefin.

4. A low smoke flame retardant B1 grade cable according to claim 1, wherein: the filling layer (9) is made of alkali-free glass fiber.

5. A low smoke flame retardant B1 grade cable according to claim 1, wherein: the protective layer (7) and the wear-resistant protrusions (8) are made of polyvinyl chloride.

6. A low smoke flame retardant B1 grade cable according to claim 1, wherein: the main lead (1) and the auxiliary lead (4) are made of annealed tinned soft copper wires.