CN219286072U - Fireproof low-voltage cable - Google Patents

Abstract

The utility model relates to the technical field of cables and discloses a fireproof low-voltage cable which comprises a body, wherein an inner core is arranged in the body, a buffer layer is arranged on the outer side of the inner core, a fixing groove is formed between the buffer layer and the inner core, rubber particles are arranged in the fixing groove, a shielding layer is fixedly arranged on the outer side of the buffer layer, a wire is arranged in the body, and a mica tape layer is fixedly arranged on the outer wall of the wire. The fireproof low-voltage cable is provided with a buffer layer and rubber particles; the setting of buffer layer plays fine guard action to inner structure, when receiving outside extrusion, can play buffering and isolating's effect, also played fine fixed position simultaneously, avoid inner structure to misplace because of the atress to guarantee normal use, the setting of rubber granule can make the thickness of buffer layer littleer, has saved the space, when having guaranteed the result of use, makes the buffer layer more light, facilitates the use and installs.

Description

Fireproof low-voltage cable

Technical Field

The utility model relates to the technical field of cables, in particular to a fireproof low-voltage cable.

Background

The cable is made of one or more conductors insulated from each other and an outer insulating protective layer, and leads for transmitting power or information from one place to another, which can be classified into a high voltage cable and a low voltage cable according to voltage. In contrast, the low-voltage cable has the characteristics of reliable operation, no occupied area, small influence from the outside and the like, and is widely applied to a low-voltage power distribution system.

The retrieved (CN 212587253U) discloses a fireproof low-voltage cable which comprises a cable outer layer 100, an insulating layer 110, copper strips 120, a second mica tape layer 130, an inner core 200, a conductor 210, a first mica tape layer 220 and a fiber braiding layer 230; the first mica tape layer and the second mica tape layer are respectively arranged on the outer side of the conductor, so that the high temperature resistance and the combustion resistance are achieved, the conductor wrapped inside is protected, the fiber braiding layer is arranged on the outer side of the first mica tape layer, the fiber braiding layer has a certain flame retardant function, a certain protection supporting function can be achieved, the tear resistance strength of the first mica tape layer is enhanced, the magnesium oxide layer is filled between the outer layer of the cable and the inner core, the fireproof performance of the cable is further improved, the insulating layer is arranged on the outer side of the inner core, the inner core can be protected from mechanical damage and chemical corrosion, the inner core is not contacted with water vapor to be wetted, the conductor is prevented from being contacted with electric shock, and the like, and the mechanical strength and the service life of the cable can be enhanced.

Because the cable is installed in open air environment, and the service time limit is longer, can be apart from the installation after to overhauing a section distance, simultaneously because the uncertainty in open air can make the cable suffer external force influence, inner structure misplaces because of the atress to influence normal use.

Disclosure of Invention

(one) solving the technical problems

The utility model aims to provide a fireproof low-voltage cable, which solves the problems that the cable is installed in an open air environment and has long service life, a certain distance is kept from the installation to the maintenance, and meanwhile, the cable is influenced by external force due to the uncertainty of the open air, and the internal structure is misplaced due to stress, so that the normal use is influenced.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fire prevention low voltage cable, includes the body, the inside of body is provided with the inner core, the outside of inner core is provided with the buffer layer, be provided with the fixed slot between buffer layer and the inner core, the inboard outer wall of buffer layer is fixed to be provided with the rubber granule, and the rubber granule is provided with a plurality of, the inside of fixed slot is provided with the rubber granule, the buffer layer sets up as an organic whole with the rubber granule, the rubber granule is the hemisphere setting, the fixed shielding layer that is provided with in the outside of buffer layer, the inside of body is provided with the wire, and the wire be provided with three, the fixed mica tape layer that is provided with of outer wall of mica tape layer, three be equipped with thermal-insulated tile support between the wire, the inside of body is provided with the filling layer, the outside of thermal-insulated tile support and the outside of wire are provided with the filling layer, and the setting of buffer layer have played shock attenuation cushioning effect, and simultaneously, the fiber braid is glass fiber or carbon fiber weaved and forms, and it not only has certain fire-retardant function, still can compromise certain protection supporting role

Preferably, the outside of shielding layer is fixed and is provided with fire-retardant layer, the outside of fire-retardant layer is provided with the protective sheath, and the protective sheath is made by fluorocarbon resin, and the shielding layer adopts copper wire or tinned copper wire to weave and forms.

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

this fire prevention low voltage cable, through having set up buffer layer and rubber granule, buffer layer's setting plays fine guard action to inner structure, when receiving outside extrusion, can play buffering and isolation's effect, also play fine fixed position simultaneously, avoid inner structure to misplace because of the atress, thereby guarantee normal use, rubber granule's setting, can make buffer layer's thickness less, make the graininess with rubber and can cover the buffer layer in the middle of the large tracts of land, save the space, when having guaranteed the result of use, make buffer layer more light, facilitate the use and installation.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is a schematic view of a cross-sectional part of the structure of the present utility model;

FIG. 3 is an enlarged schematic view of the wire section of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

fig. 5 is an enlarged schematic view of the structure of fig. 1 at B according to the present utility model.

In the figure: 1. a body; 2. a shielding layer; 3. a flame retardant layer; 4. a protective sleeve; 5. a buffer layer; 6. a filling layer; 7. a heat insulating tile bracket; 8. a wire; 9. mica tape layers; 10. a fibrous braid; 11. a fixing groove; 12. an inner core; 13. rubber particles.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the fireproof low-voltage cable comprises a body 1, wherein an inner core 12 is arranged in the body 1, a buffer layer 5 is arranged on the outer side of the inner core 12, a fixing groove 11 is arranged between the buffer layer 5 and the inner core 12, rubber particles 13 are fixedly arranged on the inner side outer wall of the buffer layer 5, a plurality of rubber particles 13 are arranged, the rubber particles 13 are arranged in the fixing groove 11, the buffer layer 5 and the rubber particles 13 are integrally arranged, the rubber particles 13 are hemispherical, a shielding layer 2 is fixedly arranged on the outer side of the buffer layer 5, wires 8 are arranged in the body 1, three wires 8 are arranged, a mica tape layer 9 is fixedly arranged on the outer wall of the wire 8, a fiber braiding layer 10 is fixedly arranged on the outer wall of the mica tape layer 9, a heat insulation tile bracket 7 is arranged among the three wires 8, the inside of the body 1 is provided with the filling layer 6, the outside of the heat insulation tile support 7 and the outside of the lead 8 are provided with the filling layer 6, 90% of the volume of the heat insulation tile support 7 is air, as the heat conductivity coefficient of the air is lowest, the heat insulation tile support has good heat insulation, heat preservation and fire resistance effects, the filling layer 6 is filled by magnesium oxide, the magnesium oxide has good insulating property, the fire resistance is good, the fire resistance of the cable is further improved, the mica tape layer 9 is a fire-resistant insulating material, the high temperature resistance and the combustion resistance are achieved, the internal lead 8 is protected, the fiber braiding layer 10 is formed by braiding glass fibers or carbon fibers, the heat insulation tile support has a certain flame retardant function, a certain protective supporting effect is achieved, and the tear resistance strength of the mica tape layer 9 is enhanced

The outside of shielding layer 2 is fixed and is provided with fire-retardant layer 3, and the outside of fire-retardant layer 3 is provided with protective sheath 4, and protective sheath 4 is made by fluorocarbon resin, has good protective properties, and shielding layer 2 adopts copper wire or tinned copper wire to weave and forms, and fire-retardant layer 3's setting has played the effect of fire prevention to the installation performance of device has been improved.

Working principle: firstly, after the body 1 is installed, due to the fact that some emergency situations possibly occur during use, such as sudden external force is applied, the buffer layer 5 is arranged, because the buffer layer 5 is made of rubber, when the buffer layer is extruded from the outside, the buffer layer 5 can play a role in buffering and isolation, the skid resistance of the rubber can be good in fixed position, dislocation of an inner structure due to stress is avoided, normal use is guaranteed, and due to the softness of the rubber, the inner structure can be well protected, rubber particles 13 arranged on the inner wall of the buffer layer 5 also save a certain space while the use effect is guaranteed, so that the buffer layer 5 is lighter and convenient to use and install, meanwhile, the mica tape layer 9 and the fiber braiding layer 10 are arranged, a certain flame retardant effect is achieved, meanwhile, the filler layer 6 is arranged, and because the magnesium oxide has good insulation performance and fireproof performance, the fireproof performance of the cable is further improved, and meanwhile, the arrangement of the heat insulation tile bracket 7 also plays a good role in heat insulation, heat preservation and fire resistance.

Finally, it should be noted that the above description is only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and that the simple modification and equivalent substitution of the technical solution of the present utility model can be made by those skilled in the art without departing from the spirit and scope of the technical solution of the present utility model.

Claims (2)

1. Fireproof low-voltage cable, comprising a body (1), characterized in that: the inside of body (1) is provided with inner core (12), the outside of inner core (12) is provided with buffer layer (5), be provided with fixed slot (11) between buffer layer (5) and inner core (12), the inboard outer wall of buffer layer (5) is fixed to be provided with rubber granule (13), and rubber granule (13) are provided with a plurality of, the inside of fixed slot (11) is provided with rubber granule (13), buffer layer (5) and rubber granule (13) set up as an organic whole, rubber granule (13) are the hemisphere setting, the outside of buffer layer (5) is fixed to be provided with shielding layer (2), the inside of body (1) is provided with wire (8), and is provided with three of wire (8), the outer wall of wire (8) is fixed to be provided with mica tape layer (9), the outer wall of mica tape layer (9) is fixed to be provided with fiber braid (10), three be equipped with thermal-insulated support (7) between wire (8), the inside of body (1) is provided with filling layer (6), the outside of thermal-insulated support (7) and wire (8) are filled.

2. A fire resistant low voltage cable according to claim 1 wherein: the outer side of the shielding layer (2) is fixedly provided with a flame-retardant layer (3), and the outer side of the flame-retardant layer (3) is provided with a protective sleeve (4).

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