CN217902771U

CN217902771U - Low-smoke halogen-free flame-retardant wire harness special for rail transit

Info

Publication number: CN217902771U
Application number: CN202220442694.4U
Authority: CN
Inventors: 李芃; 单晓伟
Original assignee: Metallurgica Bresciana Maanshan Special Cables Co ltd
Current assignee: Metallurgica Bresciana Maanshan Special Cables Co ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-11-25
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses a special pencil of fire-retardant track traffic of low smoke and zero halogen, including pencil main part and the fire-retardant skin of halogen-free, the pencil main part is including protecting skin and a plurality of conductor core, and is a plurality of the conductor core sets up in the outer inside of protection, the outside of conductor core is provided with the inner core layer, the outside at a plurality of conductor cores is wrapped up in to the inner core layer, the surface package of inner core layer is provided with the insulating layer, the surface of insulating layer is provided with the fire-retardant inlayer of halogen-free. This kind of special pencil of fire-retardant track traffic of low smoke and zero halogen, through setting up the fire-retardant skin of halogen-free and the fire-retardant inlayer of halogen-free, smokeless nontoxic during the burning, pollution-free to the environment, through setting up buffering heat dissipation layer, make the fire prevention safety requirement scientific and reasonable more, and the conflagration harm that will probably produce falls to minimumly, double-deck halogen-free flame retardant protection, the dynamics of protection has been increased, characteristics such as the volume of giving off smoke is low, be fit for the fire-retardant isolation cover that is used for the cable, can not produce toxic gas harm personal safety, the feature of environmental protection has.

Description

Special pencil of low smoke and zero halogen flame retardant track traffic

Technical Field

The utility model relates to a track traffic pencil technical field specifically is a special pencil of fire-retardant track traffic of low smoke and zero halogen.

Background

Urban rail transit is the main measure of improving traffic environment in international big cities at present, and due to the particularity of rail transit, the requirements on the safety and the reliability of a power system are extremely high. The laying environment of subway and light rail cables is complex, products in the prior art can not meet various harsh requirements of laying at the same time, if an accident occurs, a large amount of dense smoke and halogen acid gas can be released when the cables are ignited and burned, the halogen acid gas has corrosive harm to surrounding electrical equipment, and rescuers can put out a fire by taking a gas mask to approach the site. Therefore, the improvement is made, and the low-smoke halogen-free flame-retardant wire harness special for the rail transit is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a special pencil of fire-retardant track traffic of low smoke and zero halogen, include.

As the utility model discloses a special pencil of fire-retardant track traffic of low smoke and zero halogen, including pencil main part and the fire-retardant skin of halogen-free, the pencil main part is including protecting skin and a plurality of conductor core, and is a plurality of the conductor core sets up in the outer inside of protection, the outside of conductor core is provided with the inner core layer, the outside at a plurality of conductor cores is wrapped up in to the inner core layer, the surface package of inner core layer is provided with the insulating layer, the surface of insulating layer is provided with the fire-retardant inlayer of halogen-free, the surface winding cladding of the fire-retardant inlayer of halogen-free has the buffering heat dissipation layer.

As an optimal technical scheme of the utility model, the fire-retardant inlayer of zero halogen is made by black low smoke and zero halogen oxygen insulation sheath material, the outer middle part equidistance of fire-retardant of zero halogen is provided with a plurality of fire-retardant strips of zero halogen, the fire-retardant strip of zero halogen is the annular array setting, the fire-retardant strip of zero halogen adopts low smoke and zero halogen polyurethane.

As an optimized technical scheme of the utility model, the inner core in situ is filled with the fire retardant, the fire retardant adopts the material to be alkali-free glass fiber material.

As a preferred technical scheme of the utility model, be connected through a plurality of reinforcement pieces between the inner wall of insulating layer and the conductor core, the length direction equidistance of reinforcement piece bunch main part along the line sets up, the reinforcement piece sets up respectively between two conductor cores.

As an optimal technical scheme of the utility model, the surface cladding winding of conductor core has the jacket layer of weaving, weave the jacket layer and adopt glass fiber and metal fiber to interweave the winding and constitute, the surface coating who weaves the jacket layer has the PVC coating.

As an optimal technical scheme of the utility model, it is a plurality of the middle part of conductor core is provided with the location inner strip, the location inner strip sets up the centre of a circle department in the pencil main part, the location inner strip adopts aramid fiber silk twisted compound to make.

As an optimal technical scheme of the utility model, the buffering heat dissipation layer adopts graphite fiber to make, the protection outer layer comprises the metal mesh.

The utility model has the advantages that:

1. according to the low-smoke halogen-free flame-retardant wire harness special for rail transit, the periphery of the wire harness sleeve has a good insulating and waterproof effect by arranging the PVC coating, the protective effect of the periphery of the electronic wire harness is greatly improved, the service life of the electronic wire harness is effectively prolonged, and the wire harness sleeve composed of the glass fiber, the metal fiber and the PVC coating has good flexibility and toughness, so that the wire harness sleeve is suitable for electronic wire harnesses with various specifications and lengths;

2. according to the low-smoke halogen-free flame-retardant wire harness special for rail transit, the halogen-free flame-retardant outer layer and the halogen-free flame-retardant inner layer are arranged, so that no smoke and no toxicity are generated during burning, no pollution is caused to the environment, the fireproof safety requirement is more scientific and reasonable by arranging the buffering heat dissipation layer, possible fire hazard is reduced to the minimum, the double-layer halogen-free flame-retardant protection is realized, the protection strength is increased, the smoke quantity is low, and the like, the wire harness special for rail transit is suitable for a flame-retardant isolation sleeve of a cable, no toxic gas is generated to harm the personal safety, and the environment friendliness is realized;

3. this kind of special pencil of fire-retardant track traffic of low smoke and zero halogen, through setting up a plurality of reinforcement pieces, reinforcement piece is on the surface of conductor core, effectually fixes a position the conductor core, and reinforcement piece equidistance sets up in the pencil main part moreover, does not influence in daily use, and the bending force of pencil main part does not influence the pliability of pencil main part yet when having increased the inside conductor core stability of pencil main part.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of a low-smoke halogen-free flame-retardant wire harness special for rail transit according to the present invention;

FIG. 2 is a schematic cross-sectional view of the low-smoke halogen-free flame-retardant wire harness special for rail transit according to the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a wire harness main body; 2. a protective outer layer; 3. a halogen-free flame retardant strip; 4. a halogen-free flame retardant outer layer; 5. a buffer heat dissipation layer; 6. a halogen-free flame retardant inner layer; 7. an insulating layer; 8. an inner core layer; 9. a conductor core; 10. positioning the inner strip; 11. a reinforcing block; 12. and (6) weaving the jacket layer.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-3, the utility model relates to a special pencil of fire-retardant track traffic of low smoke and zero halogen, including pencil main part 1 and the fire-retardant skin 4 of halogen-free, pencil main part 1 is including protecting skin 2 and a plurality of conductor core 9, and a plurality of conductor core 9 set up in the inside of protecting skin 2, and the outside of conductor core 9 is provided with inner core layer 8, and inner core layer 8 parcel is in the outside of a plurality of conductor cores 9, and inner core layer 8's surface parcel is provided with insulating layer 7, and the surface of insulating layer 7 is provided with the fire-retardant inlayer 6 of halogen-free, and the surface winding cladding of the fire-retardant inlayer 6 of halogen-free has buffering heat dissipation layer 5.

The halogen-free flame-retardant inner layer 6 is made of black low-smoke halogen-free oxygen-isolating sheath materials, a plurality of halogen-free flame-retardant strips 3 are arranged in the middle of the halogen-free flame-retardant outer layer 4 at equal intervals, the halogen-free flame-retardant strips 3 are arranged in an annular array, and the halogen-free flame-retardant strips 3 are made of low-smoke halogen-free polyurethane.

The inner core layer 8 is filled with a flame retardant, and the flame retardant is made of alkali-free glass fiber materials.

The inner wall of the insulating layer 7 is connected with the conductor cores 9 through a plurality of reinforcing blocks 11, the reinforcing blocks 11 are arranged at equal intervals along the length direction of the wiring harness body 1, and the reinforcing blocks 11 are respectively arranged between the two conductor cores 9.

The surface of the conductor core 9 is wrapped and wound with a woven jacket layer 12, the woven jacket layer 12 is formed by interweaving and winding glass fibers and metal fibers, and the surface of the woven jacket layer 12 is coated with a PVC coating.

Wherein, the middle part of a plurality of conductor cores 9 is provided with location inner strip 10, and location inner strip 10 sets up in the centre of a circle department of pencil main part 1, and location inner strip 10 adopts aramid fiber silk twist to make.

Wherein, the buffering heat dissipation layer 5 is made of graphite fiber, and the protective outer layer 2 is composed of a metal mesh.

The working principle is as follows: the location inner strip 10 adopts aramid fiber strand complex, have high tensile, the superhigh strength, high modulus and high temperature resistance, acid and alkali resistance, good performance such as light in weight, through the coating that sets up the PVC coating, can make the pencil cover periphery have good waterproof effect of insulation, improve electronic pencil outlying protecting effect greatly, effectively improve its life, and glass fiber, the pencil cover that metal fiber and PVC coating are constituteed has good flexibility and toughness, thereby applicable in the electronic pencil of multiple specification length uses, through setting up halogen-free fire-retardant skin 4 and halogen-free fire-retardant inlayer 6, it is smokeless nontoxic during the burning, pollution-free to the environment, through setting up buffering heat dissipation layer 5, make the fire safety requirement scientific and reasonable more, and reduce the conflagration harm that probably produces to minimum, double-deck halogen-free fire-retardant protection, the dynamics of protection has been increased, characteristics such as the volume of smoke generation is low, be fit for the fire-retardant spacer sleeve of cable, can not produce poisonous gas and endanger human safety, have the feature of environmental protection, through setting up a plurality of blocks 11, conductor block 11 is on the surface of conductor core 9, effectual reinforcing block 11 fixes a position, reinforcing block 11 sets up the influence in the main part of the wiring harness main part that daily pencil influences also 1 internal bending in the main part, the main part of 1 simultaneously, the pencil is not increasing, the daily pencil main part, the use, 1, the main part is not, the daily crooked stability of pencil is also, 1.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a special pencil of fire-retardant track traffic of low smoke and zero halogen, includes pencil main part (1) and does not have steamed fire-retardant skin (4), its characterized in that, pencil main part (1) is including protecting skin (2) and a plurality of conductor core (9), and is a plurality of conductor core (9) set up the inside at the outer (2) of protection, the outside of conductor core (9) is provided with inner core layer (8), inner core layer (8) parcel is in the outside of a plurality of conductor core (9), the surface parcel of inner core layer (8) is provided with insulating layer (7), the surface of insulating layer (7) is provided with steamed fire-retardant inlayer (6), the surface winding cladding of steamed fire-retardant inlayer (6) has buffering heat dissipation layer (5).

2. The wire harness special for the low-smoke halogen-free flame-retardant rail transit is characterized in that the halogen-free flame-retardant inner layer (6) is made of black low-smoke halogen-free oxygen-isolating sheath material, a plurality of halogen-free flame-retardant strips (3) are arranged in the middle of the halogen-free flame-retardant outer layer (4) at equal intervals, the halogen-free flame-retardant strips (3) are arranged in an annular array, and low-smoke halogen-free polyurethane is adopted as the halogen-free flame-retardant strips (3).

3. The low-smoke halogen-free flame-retardant wire harness special for rail transit according to claim 1, wherein the inner core layer (8) is filled with a flame retardant, and the flame retardant is made of alkali-free glass fiber material.

4. The low-smoke zero-halogen flame-retardant wire harness special for rail transit according to claim 1, wherein the inner wall of the insulating layer (7) is connected with the conductor cores (9) through a plurality of reinforcing blocks (11), the reinforcing blocks (11) are arranged at equal intervals along the length direction of the wire harness body (1), and the reinforcing blocks (11) are respectively arranged between the two conductor cores (9).

5. The special wire harness for the low-smoke zero-halogen flame-retardant rail transit is characterized in that a woven jacket layer (12) is wrapped and wound on the surface of the conductor core (9), the woven jacket layer (12) is formed by interweaving and winding glass fibers and metal fibers, and a PVC coating is coated on the surface of the woven jacket layer (12).

6. The low-smoke zero-halogen flame-retardant wire harness special for rail transit as claimed in claim 1, wherein a positioning inner strip (10) is arranged in the middle of the plurality of conductor cores (9), the positioning inner strip (10) is arranged at the center of a circle of the wire harness main body (1), and the positioning inner strip (10) is made of aramid fiber twisted compound.

7. The low-smoke halogen-free flame-retardant wire harness special for rail transit according to claim 1, wherein the buffering heat dissipation layer (5) is made of graphite fiber, and the protective outer layer (2) is made of metal mesh.