CN211181692U

CN211181692U - Environment-friendly flexible mineral cable

Info

Publication number: CN211181692U
Application number: CN202020268761.6U
Authority: CN
Inventors: 席舸铭; 郭留杰; 闫殿龙; 刘思雨
Original assignee: Zhengzhou Yuanda Wire Cable Co ltd
Current assignee: Zhengzhou Yuanda Wire Cable Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-08-04
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses an environment-friendly flexible mineral cable, which comprises a cable core and an insulating flame-retardant component arranged outside the cable core, wherein the cable core comprises a plurality of conductor cores which are arranged in a surrounding way, each conductor core is arranged in a surrounding way to form a tensile cavity with a tensile inner core, and each conductor core is coated with a first insulating layer and an electromagnetic shielding layer which are arranged from inside to outside; the insulating flame-retardant component comprises a flexible bearing layer, a mineral fire-proof layer, a steel wire armor layer and a halogen-free outer sheath, wherein the flexible bearing layer, the mineral fire-proof layer, the steel wire armor layer and the halogen-free outer sheath are coaxially arranged with the cable core and are arranged from inside to outside. In the technical scheme, an insulating flame-retardant component is arranged on the outer side of a cable core; the environment-friendly flexible mineral cable has the advantages of simple structure, stable structure, strong bearing capacity, impact resistance and tensile resistance, good insulation protection performance, corrosion resistance, electromagnetic interference resistance and fireproof flame retardant capability, and greatly improved stability and reliability during cable operation.

Description

Environment-friendly flexible mineral cable

Technical Field

The utility model relates to a fire-retardant technical field of cable fire prevention, concretely relates to flexible mineral cable of environment-friendly.

Background

In many places such as high-rise and super high-rise buildings, large entertainment places, large industrial and mining places, enterprises and underground engineering, cables are often densely laid, and once a fire disaster happens, the fire can be spread to other departments and floors along the cables. According to the statistics of fire departments, urban fires, wherein more than 2/3 is caused by the spread of cable burning due to the failure of electrical equipment or overload of a cable, and in many past fires, the main causes of personal life risks and secondary hazards are acid gas and toxic gas released after the cable burns.

The fire prevention technology of cable arouses people's concern more and more, therefore the insulating nature and the fire resistance of cable are the important working property of cable, present in order to satisfy that the insulating nature and the fire resistance of cable are stable under adverse operating environment, mineral substance insulated cable has obtained very extensive application, discover in the actual production and use, current mineral substance insulated cable has often increased the structure such as one deck or multilayer all by fire-retardant efficiency's ceramic composite band, mica band for the cable on traditional cable insulation system and bearing structure basis, in order to reach the purpose that improves cable fire resistance.

Although the flame-retardant fireproof capacity of the cable can be improved to a certain degree, the structural strength of the ceramic composite wrapping tape and the mica wrapping tape is weak, so that the structural strength, the bearing capacity, the tensile capacity, the corrosion resistance and the anti-interference capacity of the cable are relatively poor on one hand, and the flame-retardant effect of the ceramic composite wrapping tape is reduced under the condition of overhigh temperature and the like, and the flame-retardant capacity of the cable is reduced due to the breakage of the ceramic composite wrapping tape, the mica wrapping tape and the like caused by external force impact, so that the flame-retardant capacity, the bearing capacity, the corrosion resistance, the anti-interference capacity and the like of the cable are seriously influenced.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides an environment-friendly flexible mineral cable can show flame retardant efficiency, bearing capacity, anticorrosive and interference killing feature of cable.

The utility model adopts the technical proposal that: an environment-friendly flexible mineral cable comprises a cable core and an insulating flame-retardant component arranged on the outer side of the cable core, wherein the cable core comprises a plurality of conductor cores which are arranged in a surrounding manner, each conductor core is arranged in a surrounding manner to form a tensile cavity with a tensile inner core, and a first insulating layer and an electromagnetic shielding layer which are arranged from inside to outside are coated on each conductor core; the insulating flame-retardant component comprises a flexible bearing layer, a mineral fire-proof layer, a steel wire armor layer and a halogen-free outer sheath, wherein the flexible bearing layer, the mineral fire-proof layer, the steel wire armor layer and the halogen-free outer sheath are coaxially arranged with the cable core and are arranged from inside to outside.

In the technical scheme, an insulating flame-retardant component is arranged on the outer side of a cable core; the environment-friendly flexible mineral cable has the advantages of simple structure, stable structure, strong bearing capacity, impact resistance and tensile resistance, good insulation protection performance, corrosion resistance, electromagnetic interference resistance and fireproof flame retardant capability, and greatly improved stability and reliability during cable operation. Specifically, a first insulating layer and an electromagnetic shielding layer are arranged outside a lead core of the cable core; the first insulating layer arranged outside each wire core avoids the cable fire caused by short circuit among the wire cores, and the like, and can also effectively prevent other wire cores from being ignited due to the fire of one wire core, so that the fire hazard is rapidly spread and expanded; the shielding performance can be improved under the shielding effect of the electromagnetic shielding layer; tensile inner cores are arranged in tensile cavities formed on the inner sides of the cable cores, so that the tensile property of the whole cable can be ensured.

The cavity structure of the flexible bearing layer of the insulating flame-retardant component can effectively improve the bearing capacity of the cable and also can effectively meet the requirement on the flexibility of the cable, and the fireproof performance of the cable can be ensured by the mineral fireproof layer; meanwhile, the steel wire armor layer can effectively improve the impact resistance, bending resistance and structural strength of the cable; the halogen-free outer sheath can effectively resist vulcanization. When burning, it will not produce poisonous carcinogenic gas, especially suitable for public places and so on, and effectively avoid secondary harm.

Preferably, a second insulating layer is arranged between the flexible bearing layer and the electromagnetic shielding layer outside each conductor core.

Preferably, the flexible bearing layer comprises a flexible sleeve which is arranged in a hollow mode, a plurality of flexible inner cores which are arranged around the cable core are arranged in the flexible sleeve in a penetrating mode, and the flexible inner cores are filled with flame-retardant powder.

Preferably, a third insulating layer is arranged between the mineral fireproof layer and the flexible bearing layer.

Preferably, the outer surface of the halogen-free outer sheath is provided with a wear-resistant protective layer.

Preferably, the mineral fire-proof layer is a fluorine mica tape fire-proof layer.

Preferably, the wire core is made of a soft copper conductor.

Preferably, the tensile inner core is formed by twisting a plurality of metal wires.

The utility model has the advantages that: the environment-friendly flexible mineral cable provided by the utility model adopts a multilayer structure for protection, and under the action of each structural layer, the cable has good electromagnetic shielding performance, fire resistance, electrical performance, mechanical performance and flexibility; after the cable is ignited, the rapid spread and expansion of fire can be avoided; thereby greatly improving the stability and the reliability of the cable in operation. The cable can prevent the cable from generating toxic carcinogenic gas after being burnt, and secondary harm is effectively avoided. The utility model discloses it is rational in infrastructure, higher practical value has.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a structural diagram of an environment-friendly flexible mineral cable according to an embodiment of the present invention.

Reference numerals: the wire core 100, the first insulating layer 200, the electromagnetic shielding layer 300, the second insulating layer 400, the flexible sleeve 500, the flexible inner core 510, the third insulating layer 600, the mineral fire-proof layer 700, the steel wire armor layer 800, the halogen-free outer sheath 900 and the tensile inner core 1000.

Detailed Description

Here, it is to be noted that the functions, methods, and the like related to the present invention are only conventional adaptive applications of the related art. Therefore, the present invention is an improvement of the prior art, which substantially lies in the connection relationship between hardware, not in the functions and methods themselves, that is, the present invention relates to a few functions and methods, but does not include the improvements proposed in the functions and methods themselves. The present invention is described for better illustration of the function and method for better understanding of the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Referring to fig. 1, the environment-friendly flexible mineral cable provided in this embodiment includes a cable core and an insulating flame retardant component disposed outside the cable core, where the insulating flame retardant component is disposed outside the cable core in this embodiment; the environment-friendly flexible mineral cable has the advantages of simple structure, stable structure, strong bearing capacity, impact resistance and tensile resistance, good insulation protection performance, corrosion resistance, electromagnetic interference resistance and fireproof flame retardant capability, and greatly improved stability and reliability during cable operation.

As shown in fig. 1, the cable core includes a plurality of circumferentially arranged wire cores 100, each wire core 100 is circumferentially arranged to form a tensile cavity with a tensile inner core 1000 inside, and each wire core 100 is coated with a first insulating layer 200 and an electromagnetic shielding layer 300 arranged from inside to outside; a first insulating layer 200 and an electromagnetic shielding layer 300 are arranged outside the conductor core 100 of the cable core; the first insulating layer 200 arranged outside each wire core 100 avoids the cable fire caused by short circuit among the wire cores 100, and the like, and simultaneously can effectively prevent the other wire cores 100 from being ignited due to the fire of one wire core 100, so that the fire rapidly spreads and expands; the shielding performance can be improved under the shielding effect of the electromagnetic shielding layer 300; tensile inner cores 1000 are arranged in tensile cavities formed on the inner sides of the cable cores, so that the tensile property of the whole cable can be ensured. In this embodiment, the tensile inner core 1000 is formed by twisting a plurality of strands of metal wires, and the tensile inner core 1000 formed by twisting can prevent the cable from being broken by external force, so that the cable has higher tensile performance; in the present embodiment, the wire core 100 is made of a soft copper conductor, and the conductive effect of the copper conductor is more due to iron and aluminum conductors.

As described above, in order to improve the insulating and flame-retardant performance of the cable, the insulating and flame-retardant assembly provided by the present embodiment includes a flexible carrier layer coaxially arranged with the cable core and arranged from inside to outside, a mineral flame-retardant layer 700, a steel wire armor layer 800, and a halogen-free outer sheath 900. The cavity structure of the flexible bearing layer of the insulating flame-retardant component can effectively improve the bearing capacity of the cable and also can effectively meet the requirement on the flexibility of the cable, the mineral fireproof layer 700 can ensure the fireproof performance of the cable, and the mineral fireproof layer 700 is a fluorine mica tape fireproof layer which can improve the fireproof performance; meanwhile, the steel wire armor layer 800 can effectively improve the impact resistance, bending resistance and structural strength of the cable; the halogen-free outer jacket 900 is effective in resisting vulcanization. When burning, it will not produce poisonous carcinogenic gas, especially suitable for public places and so on, and effectively avoid secondary harm.

As shown in fig. 1, in order to improve the insulation effect of the cable core, the present embodiment further provides a second insulating layer 400 between the flexible carrier layer and the electromagnetic shielding layer 300 outside each conductor core 100. The second insulating layer 400 may serve to insulate the cable core.

As shown in fig. 1, further, the flexible carrier layer provided in this embodiment includes a flexible sleeve 500 arranged in a hollow manner, a plurality of flexible inner cores 510 arranged around the cable core penetrate through the flexible sleeve 500, and the flexible inner cores 510 are filled with flame retardant powder. The flexibility of cable can be improved to flexible cover 500, and the fire-retardant powder that flexible inner core 510 was filled simultaneously can spill over after the cable catches fire, puts out the outside fire source on the one hand, and on the other hand can directly wrap up the wire inner core on the surface outward to prevent that high temperature flame from stretching, reach fire-retardant purpose.

As shown in fig. 1, the present embodiment also provides a third insulating layer 600 between the mineral flame retardant layer 700 and the flexible carrier layer. The third insulation layer 600 may serve as insulation for the entire cable.

As shown in fig. 1, since the outer surface of the cable directly contacts with the installation surface, in order to prevent the outer surface of the cable from being worn too fast, the embodiment has a wear-resistant protective layer on the outer surface of the halogen-free outer sheath 900. The wear-resistant protective layer can improve the wear resistance of the cable and prolong the service life of the cable in severe environment.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of description only and is not intended to be interpreted as indicating or implying any relative importance or implicit indication of the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be an electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a flexible mineral substance cable of environment-friendly, includes the cable core and locates the fire-retardant subassembly of insulation in the cable core outside, its characterized in that:

the cable core comprises a plurality of lead cores (100) which are arranged in a surrounding manner, each lead core (100) is arranged in a surrounding manner to form a tensile cavity with a tensile inner core (1000) inside, and each lead core (100) is coated with a first insulating layer (200) and an electromagnetic shielding layer (300) which are arranged from inside to outside;

the insulating flame-retardant component comprises a flexible bearing layer, a mineral fire-proof layer (700), a steel wire armor layer (800) and a halogen-free outer sheath (900), wherein the flexible bearing layer, the mineral fire-proof layer (700), the steel wire armor layer and the halogen-free outer sheath are coaxially arranged with the cable core and are arranged from inside to outside.

2. The environment-friendly flexible mineral cable of claim 1, wherein: and a second insulating layer (400) is arranged between the flexible bearing layer and the electromagnetic shielding layer (300) on the outer side of each conductor core (100).

3. The environment-friendly flexible mineral cable of claim 1, wherein: the flexible bearing layer comprises a flexible sleeve (500) which is arranged in a hollow mode, a plurality of flexible inner cores (510) which are arranged around the cable cores are arranged in the flexible sleeve (500) in a penetrating mode, and flame retardant powder is filled in the flexible inner cores (510).

4. The environment-friendly flexible mineral cable of claim 1, wherein: and a third insulating layer (600) is arranged between the mineral fireproof layer (700) and the flexible bearing layer.

5. The environment-friendly flexible mineral cable of claim 1, wherein: the outer surface of the halogen-free outer sheath (900) is provided with a wear-resistant protective layer.

6. The environment-friendly flexible mineral cable of claim 1, wherein: the mineral substance fireproof layer (700) is a fluorine mica tape fireproof layer.

7. The environment-friendly flexible mineral cable of claim 1, wherein: the wire core (100) is made of a soft copper conductor.

8. The environment-friendly flexible mineral cable of claim 1, wherein: the tensile inner core (1000) is formed by twisting a plurality of strands of metal wires.