CN215069379U - Fire-resistant high temperature resistant cable - Google Patents

Abstract

The utility model discloses a fire-resistant high-temperature-resistant cable in the technical field of cables, which comprises an inner protective layer, wherein a first inner core wire, a second inner core wire, a third inner core wire and a fourth inner core wire are respectively arranged inside the inner protective layer, the first inner core wire, the second inner core wire, the third inner core wire and the fourth inner core wire are uniformly distributed in a circumferential array inside the inner protective layer, a supporting layer is fixedly connected to the outer side of the inner protective layer, a supporting keel is arranged inside the supporting layer, a reinforced layer is fixedly connected to the surface of the outer side of the supporting layer, a first heat-insulating layer is fixedly connected to the surface of the outer side of the reinforced layer, a second heat-insulating layer is fixedly connected to the surface of the outer side of the first heat-insulating layer, a third heat-insulating layer is fixedly connected to the surface of the outer side of the third heat-insulating layer, an insulating layer is fixedly connected to the surface of the outer side of the shock-absorbing layer, an outer protective layer is fixedly connected to the surface of the insulating layer, the cable has excellent fire-resistant and high-temperature-resistant performances.

Description

Fire-resistant high temperature resistant cable

Technical Field

The utility model relates to the technical field of cables, specifically a fire-resistant high temperature resistant cable.

Background

The cable is made of one or more conductors insulated from each other and an outer insulating protective layer, and is used for transmitting power or information from one place to another. Typically a rope-like cable made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from one another and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation, and the cable can be a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

At present, the fire-resistant high temperature resistant effect of current cable is not good enough, and the cable is when carrying power, and inside can produce a large amount of heats, and these heats can not be timely scatter, if outer material does not possess fire-resistant high temperature resistance, probably can arouse the conflagration to cause loss of property, the people's that still may harm health.

Accordingly, those skilled in the art have provided a fire-resistant and high-temperature-resistant cable to solve the problems set forth in the background art as described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-resistant high temperature resistant cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a fire-resistant high-temperature-resistant cable comprises an inner protective layer, wherein a first inner core wire, a second inner core wire, a third inner core wire and a fourth inner core wire are respectively arranged inside the inner protective layer, the first inner core wire, the second inner core wire, the third inner core wire and the fourth inner core wire are uniformly distributed in a circumferential array manner inside the inner protective layer, a supporting layer is fixedly connected to the outer side of the inner protective layer, a supporting keel is arranged inside the supporting layer, a reinforcing layer is fixedly connected to the outer side surface of the supporting layer, a first heat-insulating layer is fixedly connected to the outer side surface of the reinforcing layer, a second heat-insulating layer is fixedly connected to the outer side surface of the first heat-insulating layer, a third heat-insulating layer is fixedly connected to the outer side surface of the third heat-insulating layer, and an insulating layer is fixedly connected to the outer side surface of the shock-insulating layer, and the outer surface of the insulating layer is fixedly connected with an outer protective layer.

As a further aspect of the present invention: the first inner core wire, the second inner core wire, the third inner core wire and the fourth inner core wire are made of copper metal, and the radii of the cross sections of the first inner core wire, the second inner core wire, the third inner core wire and the fourth inner core wire are the same.

As a further aspect of the present invention: the supporting layer is made of polyethylene, and the reinforcing layer is made of polyvinyl chloride.

As a further aspect of the present invention: the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are all made of low-smoke halogen-free flame-retardant polyolefin, and the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are the same in thickness.

As a further aspect of the present invention: the damping layer is made of latex.

As a further aspect of the present invention: the insulating layer and the outer protective layer are both made of rubber, and the outer protective layer is slightly thicker than the insulating layer.

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

1. in the utility model, through the arrangement of each layer structure, the outer side of the inner protective layer is fixedly connected with the supporting layer, the supporting layer is internally provided with the supporting keel, the supporting keel can enhance the structural strength of the cable, the material of the supporting layer is polyethylene, the material of the reinforcing layer is polyvinyl chloride, the structural strength of the cable can be enhanced by the supporting layer and the reinforcing layer, the materials of the first thermal insulation layer, the second thermal insulation layer and the third thermal insulation layer are all low-smoke halogen-free flame-retardant polyolefin, the material has excellent flame-retardant function, so that the cable has excellent fire-resistant and high-temperature-resistant performances, wherein four thermal insulation layers are arranged, the fire-resistant and high-temperature-resistant performances can be greatly improved, the material of the damping layer is latex, the materials of the insulation layer and the outer protective layer are all rubber, and the outer protective layer is slightly thicker than the insulation layer, so that the cable can avoid the damage caused by the external environment, and the service life of the cable is prolonged, the problem that the existing cable is not good enough in fire-resistant and high-temperature-resistant performance is solved, and the service life of the cable is prolonged.

2. The utility model discloses in, through the interior heart yearn that is provided with, the inside first heart yearn that is provided with respectively of inner protective layer, the second heart yearn, third heart yearn and fourth heart yearn, and first heart yearn, the second heart yearn, third heart yearn and fourth heart yearn are inside to be circumference array evenly distributed including the inner protective layer, the heart yearn is provided with four, can improve the transmission efficiency of cable, also can reduce resistance and reduce the heat production, the inside serious problem of heat production of current cable has been solved, the heat production has been reduced, the fire-resistant high temperature resistance ability of cable has been improved to a certain extent from the follow.

Drawings

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

FIG. 2 is a schematic sectional view of the present invention;

in the figure: 1. an inner protective layer; 2. a first inner core wire; 3. a second inner core wire; 4. a third inner core wire; 5. a fourth inner core wire; 6. a support layer; 7. a support keel; 8. a reinforcing layer; 9. a first insulating layer; 10. a second thermal insulation layer; 11. a third thermal insulation layer; 13. a shock-absorbing layer; 14. an insulating layer; 15. and an outer protective layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, in an embodiment of the present invention, a fire-resistant and high-temperature-resistant cable includes an inner protective layer 1, a first inner core wire 2, a second inner core wire 3, a third inner core wire 4 and a fourth inner core wire 5 are respectively disposed inside the inner protective layer 1, the first inner core wire 2, the second inner core wire 3, the third inner core wire 4 and the fourth inner core wire 5 are uniformly distributed in a circumferential array inside the inner protective layer 1, a supporting layer 6 is fixedly connected to an outer side of the inner protective layer 1, a supporting keel 7 is disposed inside the supporting layer 6, a reinforcing layer 8 is fixedly connected to an outer side surface of the supporting layer 6, a first thermal insulation layer 9 is fixedly connected to an outer side surface of the reinforcing layer 8, a second thermal insulation layer 10 is fixedly connected to an outer side surface of the first thermal insulation layer 9, a third thermal insulation layer 11 is fixedly connected to an outer side surface of the second thermal insulation layer 10, a damping layer 13 is fixedly connected to an outer side surface of the third thermal insulation layer 11, an insulation layer 14 is fixedly connected to an outer side surface of the damping layer 13, an outer protective layer 15 is fixedly connected to the outer side surface of the insulating layer 14.

The materials of the first inner core wire 2, the second inner core wire 3, the third inner core wire 4 and the fourth inner core wire 5 are copper metals, the cross section radiuses of the first inner core wire 2, the second inner core wire 3, the third inner core wire 4 and the fourth inner core wire 5 are the same, the material of the supporting layer 6 is polyethylene, the material of the reinforcing layer 8 is polyvinyl chloride, the materials of the first heat insulation layer 9, the second heat insulation layer 10 and the third heat insulation layer 11 are low-smoke halogen-free flame-retardant polyolefin, the thicknesses of the first heat insulation layer 9, the second heat insulation layer 10 and the third heat insulation layer 11 are the same, the material of the damping layer 13 is latex, the materials of the insulating layer 14 and the outer protection layer 15 are rubber, and the outer protection layer 15 is slightly thicker than the insulating layer 14.

The utility model discloses a theory of operation is: the inner protection layer 1 is internally provided with a first inner core wire 2, a second inner core wire 3, a third inner core wire 4 and a fourth inner core wire 5 respectively, the first inner core wire 2, the second inner core wire 3, the third inner core wire 4 and the fourth inner core wire 5 are uniformly distributed in a circumferential array in the inner protection layer 1, the number of the inner core wires is four, the power transmission efficiency of the cable can be improved, the resistance can be reduced, the heat generation can be reduced, a supporting layer 6 is fixedly connected to the outer side of the inner protection layer 1, a supporting keel 7 is arranged in the supporting layer 6, the structural strength of the cable can be enhanced by the supporting keel 7, the supporting layer 6 is made of polyethylene, the reinforcing layer 8 is made of polyvinyl chloride, the supporting layer 6 and the reinforcing layer 8 can also improve the structural strength of the cable, the materials of the first thermal insulation layer 9, the second thermal insulation layer 10 and the third thermal insulation layer 11 are all low-smoke halogen-free flame retardant polyolefin, and the material has an excellent flame retardant function, make the cable possess good fire-resistant high temperature resistance, wherein the insulating layer is provided with four, can improve fire-resistant high temperature resistance by very big degree, and shock-absorbing layer 13 material is latex, and insulating layer 14 and outer protective layer 15 material are rubber, and outer protective layer 15 is slightly thicker than insulating layer 14, makes the cable can avoid the injury that external environment caused, has improved the service life of cable.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A fire-resistant high temperature resistant cable, includes inner protective layer (1), its characterized in that: a first inner core wire (2), a second inner core wire (3), a third inner core wire (4) and a fourth inner core wire (5) are respectively arranged inside the inner protection layer (1), the first inner core wire (2), the second inner core wire (3), the third inner core wire (4) and the fourth inner core wire (5) are uniformly distributed in the inner protection layer (1) in a circumferential array manner, a support layer (6) is fixedly connected to the outer side of the inner protection layer (1), a support keel (7) is arranged inside the support layer (6), a reinforcing layer (8) is fixedly connected to the outer side surface of the support layer (6), a first heat insulation layer (9) is fixedly connected to the outer side surface of the reinforcing layer (8), a second heat insulation layer (10) is fixedly connected to the outer side surface of the first heat insulation layer (9), and a third heat insulation layer (11) is fixedly connected to the outer side surface of the second heat insulation layer (10), the outer side surface of the third heat insulation layer (11) is fixedly connected with a shock absorption layer (13), the outer side surface of the shock absorption layer (13) is fixedly connected with an insulation layer (14), and the outer side surface of the insulation layer (14) is fixedly connected with an outer protection layer (15).

2. The fire and high temperature resistant cable of claim 1, wherein: the first inner core wire (2), the second inner core wire (3), the third inner core wire (4) and the fourth inner core wire (5) are made of copper metal, and the cross-sectional radiuses of the first inner core wire (2), the second inner core wire (3), the third inner core wire (4) and the fourth inner core wire (5) are the same.

3. The fire and high temperature resistant cable of claim 1, wherein: the supporting layer (6) is made of polyethylene, and the reinforcing layer (8) is made of polyvinyl chloride.

4. The fire and high temperature resistant cable of claim 1, wherein: the first heat insulation layer (9), the second heat insulation layer (10) and the third heat insulation layer (11) are all made of low-smoke halogen-free flame-retardant polyolefin, and the first heat insulation layer (9), the second heat insulation layer (10) and the third heat insulation layer (11) are the same in thickness.

5. The fire and high temperature resistant cable of claim 1, wherein: the damping layer (13) is made of latex.

6. The fire and high temperature resistant cable of claim 1, wherein: the insulating layer (14) and the outer protection layer (15) are made of rubber, and the outer protection layer (15) is slightly thicker than the insulating layer (14).

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