CN210777954U

CN210777954U - Low-smoke halogen-free flame-retardant power cable

Info

Publication number: CN210777954U
Application number: CN201922064469.2U
Authority: CN
Inventors: 徐延华; 李书银
Original assignee: Jinhu Botong Technology Co ltd
Current assignee: Jinhu Botong Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-06-16
Anticipated expiration: 2029-11-26

Abstract

The utility model provides a fire-retardant power cable of low smoke and zero halogen, includes a plurality of wires, the wire structure is: the composite cable is characterized in that the innermost layer is an oxygen-free copper conductor, an irradiation crosslinking polyethylene insulating layer is arranged outside the oxygen-free copper conductor, a basalt fiber layer is arranged in the irradiation crosslinking polyethylene insulating layer, an aluminum foil layer is arranged outside the irradiation crosslinking polyethylene insulating layer, conducting wires are arranged in polyacrylonitrile preoxidized fiber at intervals, a graphite fiber layer is arranged outside the polyacrylonitrile preoxidized fiber, a steel belt woven layer is arranged outside the graphite fiber layer, and a flame-retardant high-temperature silicon sulfide rubber layer is arranged outside the steel belt woven layer. The utility model discloses used insulating material is halogen-free, low cigarette, and through the characteristic that utilizes different materials, makes one kind and has very high security, and has fine tensile ability, durable's power cable.

Description

Low-smoke halogen-free flame-retardant power cable

Technical Field

The invention belongs to the technical field of cables, and particularly relates to a low-smoke halogen-free flame-retardant power cable.

Background

With the continuous enlargement of the scales of industries such as the Chinese power industry, the data communication industry, the urban rail transit industry, the automobile industry, the shipbuilding industry and the like, the demand on wires and cables is rapidly increased, and the wire and cable industry has huge development potential in the future.

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. The low-smoke halogen-free flame-retardant wire and cable is mainly characterized in that all materials do not contain halogen, and the smoke quantity released during combustion is small. The halogen-free flame-retardant coating is used in places with halogen-free, low-smoke, flame-retardant requirements and high requirements on safety and environmental protection. Such as high-rise buildings, station hospitals, large libraries, gymnasiums, family houses, shopping malls and other places with dense personnel. However, the existing low-smoke halogen-free flame-retardant power cable is generally low in tensile strength and not durable.

Disclosure of Invention

Aiming at the problems, the invention provides the low-smoke halogen-free flame-retardant power cable which has high safety, good tensile capability and durability.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a fire-retardant power cable of low smoke and zero halogen, includes a plurality of wires, the wire structure is: the composite cable is characterized in that the innermost layer is an oxygen-free copper conductor, an irradiation crosslinking polyethylene insulating layer is arranged outside the oxygen-free copper conductor, a basalt fiber layer is arranged in the irradiation crosslinking polyethylene insulating layer, an aluminum foil layer is arranged outside the irradiation crosslinking polyethylene insulating layer, conducting wires are arranged in polyacrylonitrile preoxidized fiber at intervals, a graphite fiber layer is arranged outside the polyacrylonitrile preoxidized fiber, a steel belt woven layer is arranged outside the graphite fiber layer, and a flame-retardant high-temperature silicon sulfide rubber layer is arranged outside the steel belt woven layer.

The polyethylene subjected to irradiation crosslinking treatment is a halogen-free low-smoke insulating layer material, a high-temperature-resistant high-strength basalt fiber layer is additionally arranged in the polyethylene, the tensile property of the polyethylene is further improved, aluminum foil is arranged on the wire and is arranged in polyacrylonitrile pre-oxidized fiber at intervals, the mutual interference between the wires is reduced, the stability of the wire is improved, the polyacrylonitrile pre-oxidized fiber is also a fiber with excellent flame-retardant fireproof property, a steel belt woven layer is used for shielding external interference and resisting external mechanical damage, the strength of graphite fiber is high, the inner material is prevented from being scratched by burrs on a steel belt, the flame resistance is extremely excellent, the flame-retardant high-temperature vulcanized silicone rubber is resistant to tensile aging, and the flame-retardant high-temperature vulcanized silicone rubber is an excellent outer.

The invention has the beneficial effects that: the insulating material is halogen-free and low-smoke, and the power cable with high safety, good tensile capacity and durability is prepared by utilizing the characteristics of different materials.

Drawings

The invention is further illustrated with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the structure of the lead.

In the figure: 1. the cable comprises a conducting wire, 1.1 oxygen-free copper conductors, 1.2 irradiation cross-linked polyethylene insulating layers, 1.3 basalt fiber layers, 1.4 aluminum foil layers, 2 polyacrylonitrile preoxidized fibers, 3 graphite fiber layers, 4 steel belt braided layers and 5 flame-retardant high-temperature vulcanized silicone rubber layers.

Detailed Description

In fig. 1, a low-smoke halogen-free flame-retardant power electricity, wherein 1, a lead, 1.1, an oxygen-free copper conductor, 1.2, an irradiation cross-linked polyethylene insulating layer, 1.3, a basalt fiber layer, 1.4, an aluminum foil layer, 2, polyacrylonitrile pre-oxidized fiber, 3, a graphite fiber layer, 4, a steel belt woven layer, and 5, a flame-retardant high-temperature vulcanized silicone rubber layer. The two lead structures are as follows: the composite cable is characterized in that the innermost layer is an oxygen-free copper conductor, an irradiation crosslinking polyethylene insulating layer is arranged outside the oxygen-free copper conductor, a basalt fiber layer is arranged in the irradiation crosslinking polyethylene insulating layer, an aluminum foil layer is arranged outside the irradiation crosslinking polyethylene insulating layer, conducting wires are arranged in polyacrylonitrile preoxidized fiber at intervals, a graphite fiber layer is arranged outside the polyacrylonitrile preoxidized fiber, a steel belt woven layer is arranged outside the graphite fiber layer, and a flame-retardant high-temperature silicon sulfide rubber layer is arranged outside the steel belt woven layer.

Claims

1. The utility model provides a fire-retardant power cable of low smoke and zero halogen, includes a plurality of wires, characterized by: the wire structure is as follows: the composite cable is characterized in that the innermost layer is an oxygen-free copper conductor, an irradiation crosslinking polyethylene insulating layer is arranged outside the oxygen-free copper conductor, a basalt fiber layer is arranged in the irradiation crosslinking polyethylene insulating layer, an aluminum foil layer is arranged outside the irradiation crosslinking polyethylene insulating layer, conducting wires are arranged in polyacrylonitrile preoxidized fiber at intervals, a graphite fiber layer is arranged outside the polyacrylonitrile preoxidized fiber, a steel belt woven layer is arranged outside the graphite fiber layer, and a flame-retardant high-temperature silicon sulfide rubber layer is arranged outside the steel belt woven layer.