CN211670019U

CN211670019U - Cross-linked polyethylene insulated flame-retardant fire-resistant comprehensive control cable

Info

Publication number: CN211670019U
Application number: CN202020855922.1U
Authority: CN
Inventors: 任俊; 毕功仁; 王斌; 陶明
Original assignee: Anhui Haina Cable Group Co ltd
Current assignee: Anhui Haina Cable Group Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-10-13
Anticipated expiration: 2030-05-18

Abstract

The utility model belongs to the technical field of wire and cable, a fire-retardant fire-resistant composite control cable of crosslinked polyethylene is proposed, by cable core and cable core set gradually outward constitute around covering, flame retardant coating, shielding layer and oversheath, the cable core comprises outside light skeleton, inside supporting framework and a plurality of insulation core, the outside of light skeleton and the packing have fire-retardant type filler in the space between the covering around, and the inboard of light skeleton is equipped with the cavity, and this cavity is regular hexagonal prismatic structure, supporting framework is located the cavity to with the inner wall contact of light skeleton, form a plurality of installation chambeies, and the center of supporting framework has seted up the centre bore, a plurality of insulation core are located installation chamber and centre bore respectively.

Description

Cross-linked polyethylene insulated flame-retardant fire-resistant comprehensive control cable

Technical Field

The utility model relates to a wire and cable technical field indicates a fire-retardant fire-resistant composite control cable of crosslinked polyethylene insulation especially.

Background

The control cable is a polyvinyl chloride insulation and polyvinyl chloride sheath control cable suitable for industrial and mining enterprises, energy traffic departments, occasions for controlling and protecting lines with the alternating current rated voltage of below 450/750 volts, and the like. With the continuous enlargement of the scales of industries such as the Chinese power industry, the data communication industry, the urban rail transit industry, the automobile industry, the shipbuilding industry and the like, the demand on electric wires and cables is rapidly increased, the demand of people on the cables is gradually increased, and the traditional cables have low fire resistance, flame retardance and mechanical strength and cannot meet the demand on the market.

Therefore, the utility model provides a fire-retardant fire-resistant composite control cable of crosslinked polyethylene insulation to solve the problem that above-mentioned exists.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide a fire-retardant fire-resistant composite control cable of crosslinked polyethylene insulation.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a fire-retardant fire-resistant composite control cable of crosslinked polyethylene insulation, comprises around covering, flame retardant coating, shielding layer and oversheath that cable core and cable core set gradually outward, the cable core comprises outside light skeleton, inside support frame and a plurality of insulation core, the outside of light skeleton and around packing in the space between the covering have fire-retardant type filler, and the inboard of light skeleton is equipped with the cavity, and this cavity is regular hexagonal prismatic structure, support frame is located the cavity to with the inner wall contact of light skeleton, form a plurality of installation cavities, and support frame's center has seted up the centre bore, a plurality of insulation core are located installation cavity and centre bore respectively.

As an optimized technical scheme, light skeleton and support chassis are the hexagram structure, and light skeleton and support chassis crisscross setting each other.

As an optimal technical scheme of the utility model, the insulation core comprises conductor, mica around covering and crosslinked polyethylene insulating layer.

As an optimized technical proposal, the outer sheath is formed by extruding low-smoke halogen-free high-flame-retardant polyolefin material.

As an optimal technical scheme of the utility model, mica adopts synthetic mica tape to wind the package around the covering.

As an optimized technical scheme of the utility model, the shielding layer is woven and is formed by adopting the tinned copper wire.

As an optimal technical scheme of the utility model, the flame retardant coating is by the fireproof fire-resistant composite tape of pottery around the package constitute.

As an optimal technical scheme of the utility model, adopt the non-alkali glass fiber band to wind the package around the covering and constitute.

The utility model discloses the beneficial effect who reaches is:

1. the utility model provides a cross-linked polyethylene insulating flame-retardant fire-resistant composite control cable, the setting of light skeleton and support skeleton increases the whole intensity of cable, avoids the control cable to be broken in the use bending, increases the stability in use and the life of whole cable; in addition, the anti-interference performance of the cable is greatly improved, so that the data transmission of each insulated wire core is not interfered and independent, and the signal transmission quality is improved.

2. The utility model provides a pair of fire-retardant fire-resistant composite control cable of crosslinked polyethylene insulation, through the mica that sets gradually from inside to outside around covering, crosslinked polyethylene insulating layer, fire-retardant type filler, the fire-retardant coating that constitutes around covering, the fire-retardant composite area of pottery fire prevention and crowded oversheath that forms of package of low smoke and zero halogen high fire-retardant polyolefin material of wrapping that alkali-free glass fiber area constitutes, improved the insulation of cable, fire-retardant, fire resistance, prolong its life.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

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 invention and not to limit the invention.

In the drawings:

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

reference numbers in the figures: 1. wrapping a covering; 2. a fire barrier layer; 3. a shielding layer; 4. an outer sheath; 5. a light-weight framework; 6. a support framework; 7. a flame retardant filler; 8. a cavity; 9. a central bore; 10. a conductor; 11. mica wrapping layers; 12. and a crosslinked polyethylene insulating layer.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

Example (b): as shown in figure 1, the utility model provides a pair of fire-retardant fire-resistant composite control cable of crosslinked polyethylene insulation is by cable core and cable core set gradually outward around covering 1, flame retardant coating 2, shielding layer 3 and oversheath 4 constitute, the cable core comprises outside light skeleton 5, inside support skeleton 6 and a plurality of insulated wire core, the outside of light skeleton 5 and around filling with fire-retardant type filler 7 in the space between covering 1, effectively improve the fire resistance of cable, the inboard of light skeleton 5 is equipped with cavity 8, this cavity 8 is regular hexagonal prismatic structure, support skeleton 6 is located cavity 8 to contact with the inner wall of light skeleton 5, form a plurality of installation chambeies, and support skeleton 6's center has seted up centre bore 9, and a plurality of insulated wire core are located installation chamber and centre bore 9 respectively for the data transmission mutual noninterference of every insulated wire core, The mutual independence, thereby improved signal transmission quality, strengthened the anti-interference performance of cable.

Further, light skeleton 5 and support frame 6 are the hexagram structure, and light skeleton 5 and support frame 6 crisscross setting each other increase the holistic intensity of cable, avoid control cable to be bent in the use and is broken, increase the stability in use and the life of whole cable.

Furthermore, the insulated wire core is composed of a conductor 10, a mica wrapping layer 11 and a cross-linked polyethylene insulating layer 12, the mica wrapping layer 11 improves the fire resistance of the cable, and the cross-linked polyethylene insulating layer 12 plays a certain heat insulation role in the cable combustion process.

Further, the outer sheath 4 is formed by extruding and wrapping low-smoke halogen-free high-flame-retardant polyolefin materials, and under the combustion environment, the low-smoke halogen-free flame-retardant polyolefin materials rapidly expand to form a compact porous carbon layer, so that the flame-retardant effect of the cable is achieved.

Furthermore, the mica wrapping layer 11 is wrapped by a synthetic mica tape, so that the fire resistance of the cable is improved.

Furthermore, the shielding layer 3 is formed by weaving tinned copper wires, so that the product has excellent shielding and anti-interference performance.

Furthermore, the fireproof layer 2 is formed by wrapping a ceramic fireproof and fireproof composite tape, so that a hard shell can be formed during combustion, and the fire resistance of the cable is improved.

Further, the wrapping layer 1 is formed by wrapping alkali-free glass fiber tapes.

The working principle is as follows:

the utility model provides a crosslinked polyethylene insulating flame-retardant fire-resistant composite control cable, the setting of light skeleton 5 and support frame 6 has increased the holistic intensity of cable, avoids control cable to be buckled when using, increases the stability in use and the life of whole cable; in addition, the anti-interference performance of the cable is greatly improved, so that the data transmission of each insulated wire core is not interfered and independent, and the signal transmission quality is improved;

the mica wrapping layer 11, the cross-linked polyethylene insulating layer 12, the flame-retardant filler 7, the wrapping layer 1 consisting of the alkali-free glass fiber tape, the fireproof layer 2 consisting of the ceramic fireproof and fire-resistant composite tape and the outer sheath 4 formed by extruding the low-smoke halogen-free high-flame-retardant polyolefin material are sequentially arranged from inside to outside, so that the insulation, flame-retardant and fire-resistant performances of the cable are improved, and the service life of the cable is prolonged.

The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. A cross-linked polyethylene insulation flame-retardant fire-resistant comprehensive control cable is composed of a cable core, and a wrapping layer (1), a fire-proof layer (2), a shielding layer (3) and an outer sheath (4) which are sequentially arranged outside the cable core, it is characterized in that the cable core consists of an external light framework (5), an internal supporting framework (6) and a plurality of insulated wire cores, a gap between the outer side of the light framework (5) and the wrapping layer (1) is filled with a flame-retardant filler (7), the inner side of the light framework (5) is provided with a cavity (8), the cavity (8) is of a regular hexagonal prismatic structure, the supporting framework (6) is positioned in the cavity (8), and the inner wall of the light framework (5) is contacted to form a plurality of mounting cavities, the center of the supporting framework (6) is provided with a center hole (9), and the plurality of insulated wire cores are respectively positioned in the mounting cavities and the center hole (9).

2. The cross-linked polyethylene insulated flame-retardant fire-resistant composite control cable according to claim 1, wherein the light-weight framework (5) and the supporting framework (6) are both in a hexagonal star structure, and the light-weight framework (5) and the supporting framework (6) are arranged in a staggered manner.

3. The cross-linked polyethylene insulated flame-retardant fire-resistant composite control cable according to claim 1, wherein the insulated wire core is composed of a conductor (10), a mica wrapping layer (11) and a cross-linked polyethylene insulating layer (12).

4. The cross-linked polyethylene insulation flame-retardant fire-resistant comprehensive control cable according to claim 1, wherein the outer sheath (4) is formed by extruding and wrapping low-smoke halogen-free high-flame-retardant polyolefin material.

5. The cross-linked polyethylene insulated flame-retardant fire-resistant composite control cable according to claim 3, wherein the mica wrapping layer (11) is wrapped with a synthetic mica tape.

6. The cross-linked polyethylene insulated flame-retardant fire-resistant composite control cable according to claim 1, wherein the shielding layer (3) is braided by tinned copper wires.

7. The cross-linked polyethylene insulated flame-retardant fire-resistant composite control cable according to claim 1, wherein the fire-resistant layer (2) is formed by wrapping a ceramic fire-resistant composite tape.

8. The cross-linked polyethylene insulated flame-retardant fire-resistant composite control cable according to claim 1, wherein the wrapping layer (1) is formed by wrapping alkali-free glass fiber tape.