CN212010496U - Environment-friendly safe fireproof cable - Google Patents

Abstract

The utility model discloses an environment-friendly safe fireproof cable, which is flat and comprises a sheath layer and a plurality of conductive units arranged in the sheath layer, wherein each group of conductive units is provided with a graphite core, a rubber layer, a mica tape layer, a shielding layer and an outer wrapping layer from inside to outside in sequence; the graphite core comprises a plurality of strands of stranded graphite wires, a plurality of rib wires are arranged on the outer wall of the rubber layer, and the mica tape layer is spirally wound on the outer wall of the rubber layer; the utility model discloses a fireproof cable has many independent electrically conductive units, is suitable for different power consumption scenes, has flexibility, electric conductivity and fire behavior simultaneously concurrently, is particularly useful for the outdoor construction scene.

Description

Environment-friendly safe fireproof cable

Technical Field

The utility model relates to a cable field especially relates to an environmental protection safety type fireproof cable.

Background

The flat cable is an indispensable insulating material at present, and is often suitable for various ranges of large-scale hoisting machinery, traveling cranes, wharf hoisting machines, car dumpers and the like; the flat high-flexibility wire can adapt to the working conditions of complex terrain, frequent receiving and transmitting, severe climate and the like in field construction, and is widely applied by people.

Graphite has excellent conductivity and mechanical properties, such as vibration resistance, heat resistance, mechanical impact resistance and the like, so that an environment-friendly safe fireproof cable adopting a graphite conductive medium is needed to adapt to complicated working conditions such as field construction and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide an environmental protection safety type fireproof cable.

The purpose of the utility model is realized through the following technical scheme:

an environment-friendly safe fireproof cable is flat and comprises a sheath layer and a plurality of conductive units arranged in the sheath layer, wherein each group of conductive units is sequentially provided with a graphite core, a rubber layer, a mica tape layer, a shielding layer and an outer winding layer from inside to outside;

the graphite core comprises a plurality of strands of stranded graphite wires, a plurality of rib wires are arranged on the outer wall of the rubber layer, and the mica tape layer is spirally wound on the outer wall of the rubber layer.

In some preferred embodiments, a graphite cloth layer is further disposed between the graphite core and the rubber layer, and the graphite cloth layer is spirally wound on the outer wall of the graphite core.

In some preferred embodiments, a plurality of strip-shaped notches are uniformly arranged on the outer wall of the rubber layer, the extending direction of the notches is the same as the extending direction of the fireproof cable, a group of rib wires are embedded in each group of notches, and the rib wires are wound on the rubber layer by the mica tape layer.

In some preferred embodiments, the graphite strands comprise glass fibers and expanded graphite attached to the glass fibers.

In some preferred embodiments, the shielding layer is a braided mesh of tinned copper wires.

In some preferred embodiments, the plurality of conductive elements are arranged in a row within the jacket layer.

In some preferred embodiments, the tendon is a nylon rope or steel wire.

The utility model has the advantages of it is following:

the fireproof cable is flat and suitable for field construction scenes, and meanwhile, the conductive medium positioned on the innermost layer is made of graphite, so that the fireproof cable has the characteristics of heat resistance and excellent conductivity; the utility model discloses a fireproof cable has many independent conductive units, is suitable for different power consumption scenes; meanwhile, the composite material has flexibility, conductivity and fireproof performance, and is particularly suitable for outdoor construction scenes.

Drawings

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

fig. 2 is a schematic structural view of a conductive unit of the fireproof cable of the present invention;

in the figure: 1-sheath layer, 2-conductive unit, 200-graphite core, 210-graphite cloth layer, 220-rubber layer, 221-notch, 230-rib wire, 240-mica tape layer, 250-shielding layer and 260-outer winding layer.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1-2, an environmental protection safety type fireproof cable is flat, and includes a sheath layer 1 and a plurality of conductive units 2 arranged in the sheath layer 1, in this embodiment, the conductive units 2 are three groups and are arranged in a row in the sheath layer 1, and the sheath layer 1 is made of flame retardant rubber, such as neoprene, and can also be combined with a flame retardant polymer and flammable rubber to improve flame retardancy, such as polyvinyl chloride and nitrile rubber.

Each group of conductive units 2 is provided with a graphite core 200, a graphite cloth layer 210, a rubber layer 220, a mica tape layer 240, a shielding layer 250 and an outer winding layer 260 in sequence from inside to outside.

The graphite core 200 and the graphite cloth layer 210 are made of the same material and both comprise glass fiber and expanded graphite, the graphite has stable chemical performance and acid and alkali resistance, and the graphite material is adopted to replace the traditional metal wire, so that the graphite is environment-friendly; the expanded graphite is high-purity graphite, and is expanded to graphite worms with the volume more than 200 times of the volume of the expanded graphite at high temperature after being washed, pickled and the like, and then glass fiber is used as a framework, the expanded graphite is attached to the glass fiber and is combined with conductive adhesive for high-pressure shaping to manufacture conductive cloth with the width of 300 plus 500 mm; the graphite cloth layer 210 is formed by overlapping and winding a plurality of layers of conductive cloth, the graphite core 200 is also made of the conductive cloth, and the process is as follows: the conductive cloth is cut into strips and then twisted into fine graphite wires, a plurality of fine graphite wires are wound and wound to form a single thick graphite wire, and the graphite core is formed by stranding and connecting a plurality of strands of graphite wires.

The graphite cloth layer 210 is spirally wound on the outer wall of the graphite core 200 to tightly wind the graphite core 200, and the rubber layer 220 is arranged on the outer wall of the graphite layer 220 and is made of insulating rubber; the outer circumferential wall of the rubber layer 220 is uniformly provided with a plurality of strip-shaped gaps 221, the extending direction of each group of gaps 221 is the same as the extending direction of the fireproof cable, a group of rib wires 230 are embedded in each group of gaps 221 to enhance the axial connection strength of the cable, the mica tape layer 240 is spirally wound on the outer wall of the rubber layer 220, the rib wires 230 are fixed on the outer wall of the rubber layer 220, the mica tape layer 240 also has the fireproof and flame-retardant functions, the rib wires 230 are made of nylon ropes or steel wires, and when the steel wires are selected, steel wire ropes twisted by multi-strand steel wires are selected.

The shielding layer 250 is a tinned copper wire mesh grid, the outer wrapping layer 260 is used for gathering the inner layer of the whole conductive unit 2 together, and the whole conductive unit is flexible, excellent in fireproof conductivity and suitable for outdoor construction scenes.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (7)

1. The utility model provides an environmental protection safety type fireproof cable, is the platykurtic, includes restrictive coating (1) and locates a plurality of electrically conductive unit (2) in restrictive coating (1), its characterized in that:

each group of conductive units (2) is sequentially provided with a graphite core (200), a rubber layer (220), a mica tape layer (240), a shielding layer (250) and an outer winding layer (260) from inside to outside;

the graphite core (200) comprises a plurality of stranded graphite wires, a plurality of rib wires (230) are arranged on the outer wall of the rubber layer (220), and the mica tape layer (240) is spirally wound on the outer wall of the rubber layer (220).

2. The environmentally safe fire-resistant cable of claim 1, wherein: a graphite cloth layer (210) is further arranged between the graphite core (200) and the rubber layer (220), and the graphite cloth layer (210) is spirally wound on the outer wall of the graphite core (200).

3. The environmentally safe fire-resistant cable of claim 1 or 2, wherein: a plurality of long-strip-shaped notches (221) are uniformly arranged on the outer wall of the rubber layer (220), the extending direction of the notches (221) is the same as that of the fireproof cable, a group of rib wires (230) is embedded in each group of notches (221), and the rib wires (230) are wound on the rubber layer (220) through mica tape layers (240).

4. The environmentally safe fire-resistant cable of claim 1 or 2, wherein: the graphite wire comprises glass fibers and expanded graphite attached to the glass fibers.

5. The environmentally safe fire-resistant cable of claim 1 or 2, wherein: the shielding layer (250) is a tinned copper wire mesh grid.

6. The environmentally safe fire-resistant cable of claim 1 or 2, wherein: the conductive units (2) are arranged in a row in the sheath layer (1).

7. The environmentally safe fire-resistant cable of claim 1 or 2, wherein: the rib wire (230) is a nylon rope or a steel wire.

Images