CN210429387U

CN210429387U - Flame-retardant fireproof cable

Info

Publication number: CN210429387U
Application number: CN201921602312.4U
Authority: CN
Inventors: 林声欣
Original assignee: Jiangxi Raogong Wire And Cable Co Ltd
Current assignee: Jiangxi Raogong Wire And Cable Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-04-28
Anticipated expiration: 2029-09-24

Abstract

The utility model belongs to the technical field of the cable technique and specifically relates to a fire-retardant fire prevention type cable, including the principal conductor core and the auxiliary core, the principal conductor core and the auxiliary core are stranded the stranding each other, and the surface parcel of cable has first fire-retardant cover, first fire-retardant cover is including there being no halogen-free environmental protection polyolefin layer, there being no halogen-free low cigarette polyethylene layer and chloroprene rubber layer, there being no halogen-free low cigarette polyethylene layer on the surface of halogen-free environmental protection polyolefin layer, chloroprene rubber layer is on the surface of halogen-free low cigarette polyethylene layer, and the surface parcel of principal conductor core has the fire-retardant cover of second; the utility model discloses an adopt three levels to carry out fire-retardant fire prevention, fine has played the effect of protectiveness to the cable conductor, and multi-level the burning of fire source to the cable of blocking, this fire-retardant fire prevention type cable possesses the advantage of superstrong fire-retardant fire behavior, and the result of use of having solved present fire-retardant fireproof cable is relatively poor, can't be applicable to high temperature environment, has reduced the application range's of cable problem greatly, is worth using widely.

Description

Flame-retardant fireproof cable

Technical Field

The utility model relates to the technical field of cables, specifically a fire-retardant fire prevention type cable.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The device is erected in the air or installed underground or underwater for telecommunication or power transmission.

The wire and cable industry is the second major industry in China, which is second to the automobile industry, China's economy is continuously and rapidly increased, a huge market space is provided for cable products, China's market is strongly tempted, the world focuses on the China market, and the huge production capacity formed by China's cable manufacturing industry makes the world look at after being reformed and opened for decades. Along with the continuous enlargement of industries such as the China power industry, the data communication industry, the urban rail transit industry, the automobile industry, the shipbuilding industry and the like, the demand on electric wires and cables also increases rapidly, the electric wires and cables have huge development potential in the future, along with the social demand, the current flame-retardant fireproof cable has relatively poor use effect, cannot be applied to a high-temperature environment, and greatly reduces the use range of the cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant fire prevention type cable possesses superstrong fire behaviour's advantage, and the result of use of having solved present fire-retardant fire prevention cable is relatively poor, can't be applicable to high temperature environment, has reduced the application range's of cable problem greatly.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant fire prevention type cable, includes the thread core and assists the thread core, the thread core is stranded the stranding each other with assisting the thread core, and the surface coating of cable has first fire-retardant cover, first fire-retardant cover is including no halogen environmental protection polyolefin layer, no halogen low cigarette polyethylene layer and chloroprene rubber layer, no halogen low cigarette polyethylene layer is located the surface on no halogen environmental protection polyolefin layer, the chloroprene rubber layer is located the surface on no halogen low cigarette polyethylene layer, the surface coating of thread core has the fire-retardant cover of second, the surface coating of assisting the thread core has the fire-retardant cover of third.

Preferably, the halogen-free environment-friendly polyolefin layer, the halogen-free low-smoke polyethylene layer and the chloroprene rubber layer are integrally processed, and the thicknesses of the halogen-free environment-friendly polyolefin layer, the halogen-free low-smoke polyethylene layer and the chloroprene rubber layer are not more than 1 mm.

Preferably, the second flame-retardant sleeve comprises a glass fiber cotton layer and an asbestos screen layer, and the asbestos screen layer is positioned on the surface of the glass fiber cotton layer.

Preferably, the third flame-retardant sleeve comprises a mica tape layer and a polytetrafluoroethylene layer, and the polytetrafluoroethylene layer is positioned on the surface of the mica tape layer.

Preferably, the glass fiber cotton layer, the asbestos mesh layer, the mica tape layer and the polytetrafluoroethylene layer are processed integrally, and the thicknesses of the glass fiber cotton layer, the asbestos mesh layer, the mica tape layer and the polytetrafluoroethylene layer are not more than 0.3 mm.

Preferably, the number of the auxiliary wire cores is ten, and the auxiliary wire cores are annularly stranded around the surface of the main wire core.

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

the utility model discloses an adopt three levels to carry out fire-retardant fire prevention, fine has played the effect of protectiveness to the cable conductor, and multi-level the burning of fire source to the cable of blocking, this fire-retardant fire prevention type cable possesses the advantage of superstrong fire-retardant fire behavior, and the result of use of having solved present fire-retardant fireproof cable is relatively poor, can't be applicable to high temperature environment, has reduced the application range's of cable problem greatly, is worth using widely.

Drawings

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

FIG. 2 is a schematic structural view of a first flame-retardant sheath of the present invention;

FIG. 3 is a schematic structural view of a second flame-retardant sheath of the present invention;

fig. 4 is a schematic structural view of the third flame-retardant sleeve of the present invention.

In the figure: 1. a main wire core; 2. an auxiliary wire core; 3. a first flame retardant jacket; 31. a halogen-free environmentally friendly polyolefin layer; 32. A halogen-free low-smoke polyethylene layer; 33. a chloroprene rubber layer; 4. a second flame retardant jacket; 41. a glass fiber cotton layer; 42. an asbestos web layer; 5. a third flame retardant sleeve; 51. a mica tape layer; 52. a polytetrafluoroethylene 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. 1-4, a flame-retardant and fireproof cable includes a main wire core 1 and an auxiliary wire core 2, the main wire core 1 and the auxiliary wire core 2 are twisted into a cable, a first flame-retardant sleeve 3 is wrapped on the surface of the cable, the first flame-retardant sleeve 3 includes a halogen-free environment-friendly polyolefin layer 31, a halogen-free low-smoke polyethylene layer 32 and a chloroprene rubber layer 33, the halogen-free low-smoke polyethylene layer 32 is located on the surface of the halogen-free environment-friendly polyolefin layer 31, the chloroprene rubber layer 33 is located on the surface of the halogen-free low-smoke polyethylene layer 32, a second flame-retardant sleeve 4 is wrapped on the surface of the main wire core 1, a third flame-retardant sleeve 5 is wrapped on the surface of the auxiliary wire core 2, flame-retardant and fireproof are performed by adopting three layers, so as to well protect the cable wire and block the burning of the cable by a fire source in multiple layers, the flame-retardant and fireproof cable has the advantage, can not be applied to high-temperature environment, greatly reduces the application range of the cable, is worthy of popularization and application,

in the embodiment, the halogen-free environment-friendly polyolefin layer 31, the halogen-free low-smoke polyethylene layer 32 and the chloroprene rubber layer 33 are integrally processed, the thicknesses of the halogen-free environment-friendly polyolefin layer 31, the halogen-free low-smoke polyethylene layer 32 and the chloroprene rubber layer 33 are not more than 1 mm, the halogen-free environment-friendly polyolefin is taken as the flame retardant layer, the flame retardant cable has the characteristics of small relative density, chemical resistance, high temperature resistance, electric insulation and the like, the arranged halogen-free low-smoke polyethylene layer 32 does not cause great personnel and property loss due to cable combustion, and has the functions of no melting, insolubilization, no halogen, low toxicity and the like, the arranged chloroprene rubber layer 33 has good physical and mechanical properties, oil resistance, heat resistance, flame resistance, sunlight resistance, ozone resistance, acid and alkali resistance, chemical reagent resistance, the heat resistance is equivalent to that of nitrile rubber, the decomposition temperature is 230-, has certain flame retardance.

In this embodiment, the second flame-retardant sheath 4 includes a glass fiber cotton layer 41 and an asbestos screen layer 42, the asbestos screen layer 42 is located on the surface of the glass fiber cotton layer 41, the glass fiber cotton layer 41 has the characteristics of good insulation, strong heat resistance, good corrosion resistance, high mechanical strength and the like, the strength is not affected when the temperature reaches 300 ℃, the glass fiber cotton layer is a high-grade electrical insulating material, and the asbestos screen layer 42 can greatly enhance the flame-retardant effect of the conductor.

In this embodiment, the third flame-retardant sleeve 5 includes a mica tape layer 51 and a polytetrafluoroethylene layer 52, the polytetrafluoroethylene layer 52 is located on the surface of the mica tape layer 51, the mica tape can be used as an insulating layer of a cable and a first fireproof layer of the cable, the melting point is 1200-1300 ℃, and the third flame-retardant sleeve has a certain fireproof function.

In this embodiment, all form through an organic whole processing between glass fiber cotton layer 41 and asbestos stratum reticulare 42 and mica tape layer 51 and the polytetrafluoroethylene layer 52, and glass fiber cotton layer 41, asbestos stratum reticulare 42, mica tape layer 51 and polytetrafluoroethylene layer 52's thickness all do not exceed 0.3 mm, adopt the integration processing to form, can effectively reduce the inside phenomenon that the layering appears of parcel cover, has promoted the life of parcel cover.

In this embodiment, the number of the auxiliary cores 2 is ten, and the auxiliary cores 2 are annularly twisted around the surface of the main core 1, and are wound in an annularly twisted manner, so that the overall strength of the cable can be effectively enhanced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-retardant fire prevention type cable, includes main line core (1) and auxiliary core (2), its characterized in that: the main line core (1) and the mutual stranding of supplementary core (2) become the cable, and the surface coating of cable has first fire-retardant cover (3), first fire-retardant cover (3) is including no halogen environmental protection polyolefin layer (31), no halogen low cigarette polyethylene layer (32) and chloroprene rubber layer (33), no halogen low cigarette polyethylene layer (32) are located the surface of no halogen environmental protection polyolefin layer (31), chloroprene rubber layer (33) are located the surface of no halogen low cigarette polyethylene layer (32), the surface coating of main line core (1) has the fire-retardant cover of second (4), the surface coating of supplementary core (2) has the fire-retardant cover of third (5).

2. A fire resistant and fire resistant cable according to claim 1, wherein: adopt integrative processing to form between halogen-free environmental protection polyolefin layer (31), halogen-free low smoke polyethylene layer (32) and chloroprene rubber layer (33), the thickness of halogen-free environmental protection polyolefin layer (31), halogen-free low smoke polyethylene layer (32) and chloroprene rubber layer (33) all is no more than 1 mm.

3. A fire resistant and fire resistant cable according to claim 1, wherein: the second flame-retardant sleeve (4) comprises a glass fiber cotton layer (41) and an asbestos net layer (42), and the asbestos net layer (42) is positioned on the surface of the glass fiber cotton layer (41).

4. A fire resistant and fire resistant cable according to claim 1, wherein: the third flame-retardant sleeve (5) comprises a mica tape layer (51) and a polytetrafluoroethylene layer (52), and the polytetrafluoroethylene layer (52) is positioned on the surface of the mica tape layer (51).

5. A fire resistant and fire resistant cable according to claim 3, wherein: the glass fiber cotton layer (41), the asbestos mesh layer (42), the mica tape layer (51) and the polytetrafluoroethylene layer (52) are integrally processed, and the thicknesses of the glass fiber cotton layer (41), the asbestos mesh layer (42), the mica tape layer (51) and the polytetrafluoroethylene layer (52) are not more than 0.3 mm.

6. A fire resistant and fire resistant cable according to claim 1, wherein: the number of the auxiliary wire cores (2) is ten, and the auxiliary wire cores (2) are annularly stranded around the surface of the main wire core (1).