CN218004445U - Low-smoke halogen-free flame-retardant fire-resistant cable - Google Patents

Abstract

The utility model discloses a low-smoke halogen-free flame-retardant fire-resistant cable, which comprises three groups of three-phase cable main bodies, wherein the outer sides of the three-phase cable main bodies are all provided with insulating rubber layers, and gap positions among the three groups of insulating rubber layers are all provided with filling hemp ropes; the utility model discloses a thereby be provided with the outer protective layer and carry out the protection of first layer to the cable, and pliable and tough characteristic has, make it have the extension performance, and low smoke and zero halogen's characteristic when burning through the outer protective layer, thereby reduce the harm that smog brought people, simultaneously through being provided with the flame retardant coating have stronger corrosion resistance through the flame retardant coating, thereby the protection cable can not corroded, further through being provided with the stretch-proofing area, it has superstrong elastic modulus to make it have superstrong stretch-proofing performance through the stretch-proofing area, the in-process of having guaranteed that the cable main part is using has stronger bearing capacity, the fracture phenomenon that reduction cable self weight tenesmus and leads to takes place, the stability of structure is improved.

Description

Low-smoke halogen-free flame-retardant fire-resistant cable

Technical Field

The utility model relates to a fire-resistant cable technical field specifically is a fire-retardant fire-resistant cable of low smoke and zero halogen.

Background

The fire-resistant cable is a cable capable of keeping safe operation for a certain time under the condition of flame combustion, and is widely applied to places related to fire safety and fire-fighting lifesaving, such as high-rise buildings, underground railways, underground streets, large-scale power stations, important industrial and mining enterprises and the like, for example, power supply lines and control lines of emergency facilities such as fire-fighting equipment, emergency guide lamps and the like.

Current fire-resistant cable its outmost can be provided with low smoke and zero halogen flame retardant structure layer at the in-process of production, thereby make it can have stronger refractivity, can not produce strong smog simultaneously under high temperature environment, but the cable is assembling the in-process of using, it needs it to have stronger ductility, thereby guarantee its in-process at the assembly, can not lead to inside impaired, simultaneously in underground passage's assembling process, in order to make the cable have stronger thermal diffusivity, usually the cable adopts naked assembly methods, set up the support frame bottom the online cable through intermittent type formula, but receive the influence of cable self weight for a long time for the position of support, the phenomenon of tenesmus can appear, thereby also need the cable to have the tensile performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant fire-resistant cable of low smoke and zero halogen to propose current cable in the in-process of in-service use in solving above-mentioned background art, need stronger ductility and stretch-proofing nature's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant fire-resistant cable of low smoke and zero halogen, includes three-phase cable main parts of three groups the outside of three-phase cable main part all is provided with insulating rubber layer, three groups clearance position department between the insulating rubber layer all is provided with the packing rope made of hemp, the outside of insulating rubber layer and packing rope made of hemp is provided with the insulating layer jointly, the outside winding of insulating layer has mica tape layer, mica tape layer's outside parcel is provided with the flame retardant coating, the inside symmetry of flame retardant coating is provided with the stretch-proofing area, the outside of flame retardant coating is provided with the outer protective layer.

Preferably, the outer protective layer is made of halogen-free low-smoke flame-retardant polyolefin material, diamond grains are uniformly arranged on the outer side of the outer protective layer, and smoke is generated when the outer protective layer burns due to the fact that the halogen-free low-smoke flame-retardant polyolefin material is adopted, so that harm to a human body is reduced.

Preferably, the fire-resistant layer is made of glass fiber materials, the stretch-resistant belt is made of carbon nanotube fiber materials, and the carbon nanotube fiber materials of the stretch-resistant belt enable the cable main body to have strong stretch-resistant performance and provide corrosion-resistant performance for the cable through the fire-resistant layer.

Preferably, the mica tape layer is made of synthetic mica, and the high-temperature resistance is improved by adopting the synthetic mica.

Preferably, the main part of three-phase cable main part adopts the copper material to be the conductor, through the high temperature resistant and good power transmission efficiency of copper body to the normal transport of electric power has been guaranteed.

Preferably, the insulating rubber layer is made of PE, the thickness of the insulating rubber layer is one third of the diameter of the three-phase cable main body, and insulating protection is provided between the three-phase cable main bodies through the insulating rubber layer.

Compared with the prior art, the beneficial effects of the utility model are that: the low-smoke halogen-free flame-retardant fire-resistant cable;

thereby carry out the protection of first layer to the cable through being provided with the outer protective layer, and pliable and tough characteristic has, make it have the extension performance, and low smoke and zero halogen's characteristic when burning through the outer protective layer, thereby reduce the harm that smog brought people, simultaneously have stronger corrosion resistance through being provided with the flame retardant coating, thereby the protection cable can not corroded, further through being provided with the stretch-proofing area, it has superstrong elastic modulus to make it have superstrong stretch-proofing performance to have the stretch-proofing area through the stretch-proofing area, the in-process of having guaranteed that the cable main part is using has stronger bearing capacity, it takes place to reduce the fracture phenomenon that cable self weight tenesmus leads to, the stability of structure has been improved.

Drawings

FIG. 1 is a perspective sectional view of the structure of the present invention;

fig. 2 is a front sectional view of the present invention;

in the figure: 1. a three-phase cable body; 2. an insulating rubber layer; 3. a thermal insulation layer; 4. filling hemp ropes; 5. a mica tape layer; 6. a stretch resistant band; 7. a refractory layer; 8. 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 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. 1-2, the present invention provides an embodiment: a low-smoke halogen-free flame-retardant fire-resistant cable comprises three groups of three-phase cable main bodies 1, wherein the three-phase cable main bodies 1 are made of copper materials as conductors, the high temperature resistance and the excellent power transmission efficiency of the copper bodies are achieved, so that the normal transmission of power is guaranteed, the outer sides of the three groups of three-phase cable main bodies 1 are all provided with insulating rubber layers 2, the insulating rubber layers 2 are made of PE materials, the thickness of the insulating rubber layers 2 is one third of the diameter of the three-phase cable main bodies 1, the insulating protection is provided between the three-phase cable main bodies 1 through the arrangement of the insulating rubber layers 2, gap positions between the three groups of insulating rubber layers 2 are all provided with filling hemp ropes 4, the outer sides of the insulating rubber layers 2 and the filling hemp ropes 4 are jointly provided with a heat insulating layer 3, the outer side of the heat insulating layer 3 is wound with a mica tape layer 5, and the mica tape layer 5 is made of synthetic mica materials, through adopting synthetic mica, improve high temperature resistance, mica tape layer 5's outside parcel is provided with flame retardant coating 7, flame retardant coating 7's inside symmetry is provided with stretch-proofing area 6, flame retardant coating 7 adopts the glass fiber material to synthesize and forms, stretch-proofing area 6 adopts carbon nanotube fiber material to make, carbon nanotube fiber material through stretch-proofing area 6, thereby make the cable main part have stronger stretch-proofing performance, and provide corrosion resisting property for the cable through flame retardant coating 7, the outside of flame retardant coating 7 is provided with outer protective layer 8, outer protective layer 8 adopts halogen-free low smoke flame retardant polyolefin material to make, and its outside evenly is provided with the rhombus line, the production of smog when having reduced outer protective layer 8 burning through adopting halogen-free low smoke flame retardant polyolefin material, thereby reduce the harm to the human body.

The three-phase cable body 1 and the mica tape layer 5 in the device are the prior art, and the composition structure and the connection mode of the three-phase cable body are completely the same as those of the prior device.

The working principle is as follows: this structure is when using, provide the first layer protection for the cable main part through outer protective layer 8, and make through its adoption halogen-free low smoke flame retardant polyolefin material, thereby guarantee that it is when burning, there is not strong smog, the harm to the human body has been reduced, and the pliability that has through outer protective layer 8 itself, make the cable have the characteristic of extension, further inboard through outer protective layer 8 is provided with flame retardant coating 7 makes the cable have the corrosion protection characteristic, its corrosion-resistant function has been improved, and be provided with stretch-resistant area 6 at the inside symmetry of flame retardant coating 7, have superstrong stretch-resistant characteristic through stretch-resistant area 6, thereby make the cable accomplish the later stage at the assembly, its self weight can not lead to its continuous tenesmus phenomenon to take place, the stability of structure has been improved, prevent that the inside cracked condition of cable main part from taking place, meanwhile through being provided with mica tape layer 5, have good insulation through mica tape layer 5, high temperature resistance, the heat-proof capability, thereby can be to the inside safety protection of cable main part under the conflagration condition, prevent it from receiving the influence of high temperature, the security of cable has been improved, and then reduced through being provided with insulating layer 3 between the insulating layer 2 of packing hemp rope 4, and keep three-phase main part structure 1.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like 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 "connected" and "connected" are to be interpreted broadly, e.g., as either a fixed connection or a detachable connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (6)

1. The utility model provides a fire-retardant fire-resistant cable of low smoke and zero halogen, includes three sets of three-phase cable main parts (1), its characterized in that: the three groups the outside of three-phase cable main part (1) all is provided with insulating rubber layer (2), three groups clearance position department between insulating rubber layer (2) all is provided with packing rope made of hemp (4), the outside of insulating rubber layer (2) and packing rope made of hemp (4) is provided with insulating layer (3) jointly, the outside winding of insulating layer (3) has mica tape layer (5), the outside parcel of mica tape layer (5) is provided with flame retardant coating (7), the inside symmetry of flame retardant coating (7) is provided with stretch-proofing area (6), the outside of flame retardant coating (7) is provided with outer protective layer (8).

2. The low smoke, zero halogen, flame retardant and fire resistant cable of claim 1, wherein: the outer protection layer (8) is made of halogen-free low-smoke flame-retardant polyolefin materials, and diamond grains are uniformly arranged on the outer side of the outer protection layer.

3. The low smoke, zero halogen, flame retardant and fire resistant cable of claim 1, wherein: the fire-resistant layer (7) is synthesized by adopting a glass fiber material, and the stretch-resistant belt (6) is made of a carbon nano tube fiber material.

4. The low smoke, zero halogen, flame retardant and fire resistant cable of claim 1, wherein: the mica tape layer (5) is made of synthetic mica.

5. The low smoke, zero halogen, flame retardant and fire resistant cable of claim 1, wherein: the main part of three-phase cable main part (1) adopts the copper material to be the conductor.

6. The low smoke, zero halogen, flame retardant and fire resistant cable of claim 1, wherein: the insulating rubber layer (2) is made of PE materials, and the thickness of the insulating rubber layer (2) is one third of the diameter of the three-phase cable main body (1).

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