CN211237773U

CN211237773U - Fireproof cable of mineral substance

Info

Publication number: CN211237773U
Application number: CN201922502078.4U
Authority: CN
Inventors: 黄达练
Original assignee: Guangzhou Cable Decoration Materials Co ltd
Current assignee: Guangzhou Cable Decoration Materials Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-11
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a mineral fireproof cable, which comprises a cabling inner core and an outer protective layer coated on the periphery of the cabling inner core; the cabling core includes: four main core wires and a filling layer; the four main core wires are symmetrically arranged in the cabling inner core in pairs; each main core wire comprises a plurality of thin conductors, crossed isolation layers, core wire isolation layers and insulating outer layers; the insulating outer layer and the core wire isolating layer are sequentially coated on the periphery of the whole thin conductor from outside to inside; the cross isolation layer divides the plurality of thin conductors into four equal parts and isolates the thin conductors from each other; the filling layer is filled in gaps among the main core wires and integrally wraps all the main core wires. The four main core wires are symmetrically arranged pairwise, the thin conductors are divided into four equal parts by the crossed isolation layers so as to compress the movable gaps among the thin conductors, and under the fixing action of the first filling layer, the whole structure of the cable is uniform and stable, the cable is not easy to deform, and the bearing capacity, the tensile strength and the fracture resistance of the cable are improved; and reduce mutual interference.

Description

Fireproof cable of mineral substance

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a fireproof cable of mineral substance is related to.

Background

In recent years, the topic of new energy in the science and technology industry is continuously generated, and people expect that the high technology of new energy brings unprecedented new hopes for life and production. However, the development and innovation of new energy has not reached a high rate as predicted. The power supply system is still the most core functional system in the modern times, so various technical requirements in the power system are still the struggle targets of continuous maintenance, innovation and innovation of people.

Among them, the electric wire and cable as the power transmission carrier is always the research topic of people, and especially, the electric wire and cable laid in special environment has the possibility of causing safety accidents due to the explosion of the electrified cable, for example, the cable working under high temperature environment, especially in high temperature aging buildings, equipment with large heat generation and high temperature, and the cable which has aging phenomenon for years, etc., the cable for transmitting voltage and current is as much as an uncertain bomb. Every year, property loss and personnel death caused by fire disasters caused by cables and wires can be reported all over the world, and most of the reasons are that the high-temperature resistance, the fire resistance and the stress resistance of the cables and wires are insufficient, so that the cables are disconnected and sparks are blown out to cause a series of tragedies.

Therefore, the continuous innovation and research of the fireproof cable suitable for different environments is a scientific research project worthy of long-term development.

SUMMERY OF THE UTILITY MODEL

In order to overcome the cable can not tolerate high temperature, receive the heat easy damage, receive easy deformation or easy disconnected technical defect under the exogenic action, the utility model provides a four-core fireproof cable with stable structure, multilayer isolation layer can be separated the cable inner structure effectively and can stable structure shape, has improved the life of cable.

In order to solve the above problem, the utility model discloses realize according to following technical scheme:

the utility model relates to a mineral fireproof cable, which comprises a cabling inner core and an outer protective layer coated on the periphery of the cabling inner core;

the cabling core includes:

four main core wires, which are symmetrically arranged in pairs in the cabling inner core; each main core wire comprises a plurality of thin conductors, crossed isolation layers, core wire isolation layers and insulating outer layers; the insulating outer layer and the core wire isolating layer are sequentially coated on the periphery of the whole thin conductor from outside to inside; the cross isolation layer divides the plurality of thin conductors into four equal parts and isolates the thin conductors from each other;

and the filling layer is filled in the gaps among the main core wires and integrally wraps all the main core wires.

Further, the cross isolation layer and/or the core isolation layer are made of inorganic mineral insulating cable materials.

Further, the filling layer is made of inorganic mineral insulating cable materials.

Further, the cabling inner core further comprises a ground wire core arranged at the center of the cabling inner core.

Furthermore, the ground wire core comprises a plurality of ground wire thin conductors, a ground wire cross isolation layer, a ground wire isolation layer and a ground wire insulation layer; the ground wire insulating outer layer and the ground wire isolating layer are sequentially coated on the periphery of the whole ground wire thin conductor from outside to inside; the ground wire cross isolation layer divides a plurality of ground wire thin conductors into four equal parts and isolates the ground wire thin conductors from each other.

Further, the ground wire cross isolation layer and/or the ground wire isolation layer are made of inorganic mineral insulation cable materials.

Further, the outer sheath comprises an insulating outer sheath and a cable isolation layer from outside to inside in sequence.

Further, the outer jacket further comprises an inner sheath disposed between the filler layer and the cable isolation layer.

Further, the inner sheath is a copper sheath. The thin conductor and/or the ground thin conductor can adopt a copper conductor and/or a tin-plated copper conductor.

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

through four main core lines two bisymmetry ground setting in the stranding inner core and through alternately the isolation layer divide into the quartering to the thin conductor in every main core line, under the solid type effect of first filling layer in addition for the overall structure of cable is even firm, and the movable gap compression between the thin conductor is littleer to alternately the isolation layer, even under the frequent effect of external force, also difficult emergence is out of shape, has improved the bearing capacity of cable, tensile fracture resistance greatly.

Moreover, the cross isolation layer divides the plurality of thin conductors into four equal parts and then separates the thin conductors from each other, so that mutual interference is further reduced, and the work is more stable; but also provides a number of ways for wiring.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts. Wherein:

fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;

in the figure:

10, forming an inner core; 11 a main core wire; 111 a thin conductor; 112 cross the isolation layer; 113 a core wire isolation layer; 114 an insulating outer layer; 12 a filling layer; 13 ground wire core; 131 ground wire thin conductors; 132 ground crossing isolation layer; 133 a ground isolation layer; 134 ground line insulating layer;

20 an outer jacket; 21 an inner sheath; 22 a cable insulation layer; 23 insulating the outer sheath.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only for the purpose of illustrating and explaining the present invention, and are not to be considered as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, 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.

Referring to fig. 1, the mineral fireproof cable of the present invention includes a cabling core 10 and an outer sheath 20 coated on the periphery of the cabling core 10; the cabling core 10 comprises: four main cords 11 and a filling layer; four main heart yearns 11 two bisymmetries set up in the cabling inner core 10, two arbitrary main heart yearns 11 can both be about a certain symmetry line mutual symmetry promptly, do as shown in the figure the utility model a cross section of an embodiment of cable has in the figure lists several obvious auxiliary lines. Each main core wire 11 includes a plurality of thin conductors 111, a cross isolation layer 112, a core wire isolation layer 113, and an insulating outer layer 114; the insulating outer layer 114 and the core wire isolating layer 113 are sequentially coated on the whole periphery of all the thin conductors 111 from outside to inside; the cross isolation layer 112 divides the plurality of thin conductors 111 into four equal parts and isolates each other; the filling layer is filled in the gaps between the main core wires 11 and entirely covers all the main core wires 11.

Through four main heart yearns 11 two bisymmetrically set up in the stranding inner core 10, and divide into the thin conductor 111 in every main heart yearn 11 into the quartering through alternately isolation layer 112, under the solid type effect of first filling layer in addition for the overall structure of cable is even firm, alternately isolation layer 112 compresses the clearance of activity between thin conductor 111 littleer, even under the frequent effect of external force, also difficult emergence is out of shape, has improved the bearing capacity of cable, tensile fracture resistance greatly.

Moreover, the cross isolation layer 112 divides the plurality of thin conductors 111 into four equal parts and then separates the thin conductors from each other, so that mutual interference is further reduced, and the work is more stable; but also provides a number of ways for wiring.

In order to further improve the fire protection properties of the barrier layer, the cross barrier layer 112 and/or the core barrier layer 113 are made of inorganic mineral insulating cable material. For example, the material for the inorganic mineral insulated cable which takes magnesium oxide as the main component has the properties of high temperature resistance, corrosion resistance, flame retardance and the like, so that the cable can be continuously electrified at high temperature; even if a fire disaster occurs, the cross isolation layer 112 and/or the core wire isolation layer 113 made of inorganic mineral insulation cable materials are more resistant to high temperature than common materials, and can not generate thick smoke and toxic substances when burning in an environment with the temperature of more than 1000 ℃, so that the cable is safer to use.

This application is given first place to inorganic mineral insulation cable material, optimizes the fire behavior of each layer material in the cable, and is further, inorganic mineral insulation cable material is also adopted to the filling layer.

In order to facilitate the installation of ground wires in some situations and to avoid the inconvenience of having to install any more ground wires, the cabling core 10 may optionally further comprise a ground wire core, which is arranged in the center of the cabling core 10. In order to ensure that the ground core also has stability and bending resistance, the ground core is structurally shaped like each main core wire 11, and comprises a plurality of ground thin conductors 131, ground crossed isolation layers 132, ground isolation layers 133 and ground insulation layers 134; the ground wire insulating outer layer 114 and the ground wire isolating layer 133 are sequentially coated on the whole periphery of all the ground wire thin conductors 131 from outside to inside; the ground cross isolation layer 132 divides the plurality of ground thin conductors 131 into four equal parts and isolates them from each other.

Of course, in order to improve the fire-proof performance of the ground wire, the ground wire crossing isolation layer 132 and/or the ground wire isolation layer 133 are made of inorganic mineral insulating cable material.

In order to prevent the outer sheath from being burned to generate a large amount of smoke and toxic objects in the case of a fire, the ground wire insulating layer 134 is further optionally an LSF low smoke zero halogen outer sheath, so that the cable can be safely used with further guarantee, and the probability of life death caused by the fire is reduced.

In order to improve the wear-resisting, corrosion-resisting, overload-resisting, high temperature-resisting and fireproof performances of the cable, the outer protective layer 20 comprises an insulating outer protective sheath 23 and a cable isolation layer 22 in sequence from outside to inside. And the outer sheath 20 further comprises an inner sheath 21 arranged between the filler layer and the cable insulation layer 22. Further optionally, the insulating outer sheath 23 and/or the insulating outer layer 114 of the main core wire 11 may both adopt an LSF low smoke zero halogen outer sheath; the cable isolation layer 22 is made of inorganic mineral insulation cable materials again, an isolation barrier is formed when the cable is close to the outside, the high-temperature-resistant fireproof cable has high-temperature-resistant fireproof characteristics, and the cable can continuously and stably work in a high-temperature environment for a long time; the inner sheath 21 adopts a copper sheath, so that the strength of the cable is further improved, and the copper sheath can also serve as a secondary ground wire or other functions.

The thin conductor 111 and the ground wire thin conductor 131 are both made of the same conductor and/or tin-plated copper conductors, and the thickness and the material of the conductors can be selected according to actual requirements.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims

1. A fireproof cable of mineral substance which characterized in that: comprises a cabling inner core and an outer protective layer coated on the periphery of the cabling inner core;

the cabling core includes:

2. A mineral fire-resistant cable according to claim 1, wherein: the cross isolation layer and/or the core wire isolation layer are made of inorganic mineral insulation cable materials.

3. A mineral fire-resistant cable according to claim 1, wherein: the filling layer is made of inorganic mineral insulating cable material.

4. A mineral fire-resistant cable according to claim 1, wherein: the cabling inner core further comprises a ground wire core arranged at the center of the cabling inner core.

5. A mineral fire-resistant cable according to claim 4, wherein: the ground wire core comprises a plurality of ground wire thin conductors, ground wire cross isolation layers, ground wire isolation layers and ground wire insulation layers;

the ground wire insulating outer layer and the ground wire isolating layer are sequentially coated on the periphery of the whole ground wire thin conductor from outside to inside; the ground wire cross isolation layer divides a plurality of ground wire thin conductors into four equal parts and isolates the ground wire thin conductors from each other.

6. A mineral fire-resistant cable according to claim 5, wherein: the ground wire cross isolation layer and/or the ground wire isolation layer are made of inorganic mineral insulation cable materials.

7. A mineral fire-resistant cable according to claim 1, wherein: the outer protective layer sequentially comprises an insulating outer protective layer and a cable isolating layer from outside to inside.

8. A mineral fire-resistant cable according to claim 7, wherein: the outer jacket further comprises an inner jacket disposed between the filler layer and the cable isolation layer.

9. A mineral fire-resistant cable according to claim 8, wherein: the inner sheath adopts a copper sheath.