CN216054001U

CN216054001U - Fire-resistant double-layer electric wire

Info

Publication number: CN216054001U
Application number: CN202120801674.7U
Authority: CN
Inventors: 降子彪
Original assignee: Hebei Taifei Cable Co ltd
Current assignee: Taifei Cable Group Co.,Ltd.
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2022-03-15
Anticipated expiration: 2031-04-19

Abstract

The utility model relates to the technical field of electric wires, in particular to a fire-resistant double-layer electric wire which comprises a rubber sleeve, a coating sleeve, a plurality of insulating shielding sleeves and a conductive copper core, wherein the coating sleeve is fixedly connected to the inner side of the rubber sleeve, a plurality of ceramic composite belts are uniformly distributed on the inner side of the coating sleeve, a flame-retardant layer is filled among the ceramic composite belts, the insulating shielding sleeves are fixedly arranged inside the flame-retardant layer, and the conductive copper core is fixedly arranged in the corresponding insulating shielding sleeve. The utility model has better flame retardance and corrosion resistance, so that the wire is suitable for various severe environments.

Description

Fire-resistant double-layer electric wire

Technical Field

The utility model relates to the technical field of electric wires, in particular to a fire-resistant double-layer electric wire.

Background

The electric wire is a conducting wire for transmitting electric energy, a branch bare wire, an electromagnetic wire and an insulating wire, wherein the bare wire has no insulating layer and comprises copper, an aluminum flat wire, an overhead stranded wire and various sectional materials, the electric wire is mainly used for outdoor overhead and indoor bus bars and switch boxes, and the electromagnetic wire is an insulating conducting wire which generates a magnetic field or induces and generates current in the magnetic field after being electrified; the traditional electric wire has poor fire resistance and cannot meet some use requirements of users, and especially, a common electric wire cannot meet the use requirements in severe environments such as high temperature and the like;

in contrast, chinese patent CN201922116431.5 discloses "a fire-resistant double-layer wire, which includes a supporting body, a first protective layer and a second protective layer, wherein a filling material is fixedly connected to one side of the supporting body, and a conducting wire is fixedly connected to one side of the filling material; the first protective layer comprises an insulating layer, the insulating layer wraps the outer side of the wire, a heat insulation layer wraps the outer side of the insulating layer, and a first flame retardant coating wraps the outer side of the heat insulation layer; the electric wire can have a fire-resistant effect through the second fire-resistant layer, and the electric wire can have a fire-resistant effect through the fire-resistant layer;

however, the flame retardancy of the wire is improved only in a limited way, however, the cable is used in some severe environment mirrors, and the wire is required to have not only better high temperature resistance but also better corrosion resistance; however, the corrosion resistance of the wire cannot be effectively improved, which results in a limitation in movement of the wire of the patent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defect that the corrosion resistance of an electric wire cannot be effectively improved in the prior art, and provides a fire-resistant double-layer electric wire.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the fireproof double-layer wire comprises a rubber sleeve, a covering sleeve, a plurality of ceramic composite belts, a flame-retardant layer, a plurality of insulating shielding sleeves and a conductive copper core, wherein the covering sleeve is fixedly connected to the inner side of the rubber sleeve, the ceramic composite belts are uniformly distributed on the inner side of the covering sleeve, the flame-retardant layer is filled among the ceramic composite belts, the insulating shielding sleeves are fixedly installed inside the flame-retardant layer, and the conductive copper core is fixedly installed in the corresponding insulating shielding sleeve.

Preferably, the insulation shielding sleeve comprises a shielding layer, a buffer layer, a thermal insulation layer and a corrosion-resistant layer, wherein the buffer layer is fixedly arranged on the inner side of the shielding layer, the thermal insulation layer is fixedly arranged on the inner side of the buffer layer, and the corrosion-resistant layer is fixedly arranged on the inner side of the thermal insulation layer.

Preferably, the shielding layer is a copper strip shielding layer, the corrosion-resistant layer is a polytetrafluoroethylene layer, the buffer layer is a plastic foam layer, and the heat-insulating layer is a high-aluminum type aluminum silicate fiber layer.

The fire-resistant double-layer wire provided by the utility model has the beneficial effects that:

1. the flame-retardant layer is a mixed layer of tricresyl phosphate and aluminum hydroxide; the tricresyl phosphate and the aluminum hydroxide are halogen-free flame retardants, and the flame retardant effect of the cable is better improved by mixing the tricresyl phosphate and the aluminum hydroxide;

2. the shielding layer is a copper strip shielding layer, the corrosion-resistant layer is a polytetrafluoroethylene layer, and the polytetrafluoroethylene layer can greatly improve the electrical corrosion resistance; the buffer layer is a plastic foam layer, and the plastic foam has good heat insulation property and can prevent the cable from being damaged by external pressure; the heat insulation layer is a high-alumina type aluminum silicate fiber layer which has better insulation and heat insulation.

Drawings

Fig. 1 is a schematic structural view of a fire-resistant double-layer electric wire according to the present invention;

fig. 2 is a partial structural view of a fire-resistant double-layered electric wire according to the present invention;

fig. 3 is a schematic structural view of an insulation shield of a fire-resistant double-layer electric wire according to the present invention.

In the figure: the insulating and shielding rubber comprises a rubber sleeve 1, a cladding sleeve 2, a plurality of ceramic composite belts 3, a flame-retardant layer 4, an insulating and shielding sleeve 5, a shielding layer 51, a buffer layer 52, a heat-insulating layer 53, a corrosion-resistant layer 54 and a conductive copper core 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a fire-resistant double-layer electric wire comprises a rubber sleeve 1, a coating sleeve 2, a plurality of ceramic composite belts 3, a flame-retardant layer 4, a plurality of insulating shielding sleeves 5 and a conductive copper core 6, wherein the coating sleeve 2 is fixedly connected to the inner side of the rubber sleeve 1, and the coating sleeve 2 is made of polyacrylate; the polyacrylate layer has good water resistance, so that the wire can be effectively prevented from being damped;

the ceramic composite belts 3 are uniformly distributed on the inner side of the coating sleeve 2, the flame-retardant layer 4 is filled among the ceramic composite belts 3, and the flame-retardant layer 4 is a mixed layer of tricresyl phosphate and aluminum hydroxide; the tricresyl phosphate and the aluminum hydroxide are halogen-free flame retardants, and the flame retardant effect of the cable is better improved by mixing the tricresyl phosphate and the aluminum hydroxide; a plurality of insulation shielding sleeves 5 are fixedly arranged inside the flame-retardant layer 4, and a plurality of conductive copper cores 6 are fixedly arranged in the corresponding insulation shielding sleeves 5.

The insulation shielding sleeve 5 comprises a shielding layer 51, a buffer layer 52, a heat-insulating layer 53 and an anti-corrosion layer 54, wherein the buffer layer 52 is fixedly arranged on the inner side of the shielding layer 51, the heat-insulating layer 53 is fixedly arranged on the inner side of the buffer layer 52, the anti-corrosion layer 54 is fixedly arranged on the inner side of the heat-insulating layer 53, the shielding layer 51 is a copper strip shielding layer, the anti-corrosion layer 54 is a polytetrafluoroethylene layer, and the polytetrafluoroethylene layer can greatly improve the electrical anti-corrosion property; the buffer layer 52 is a plastic foam layer, and the plastic foam has good heat insulation property and can prevent the cable from being damaged by external pressure; the heat insulating layer 53 is a high-alumina type alumina silicate fiber layer, which has good insulating property and heat insulating property.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a fire-resistant double-deck electric wire, includes rubber sleeve (1), cladding cover (2), a plurality of ceramic composite area (3), fire-retardant layer (4), a plurality of insulating shield cover (5) and electrically conductive copper core (6), its characterized in that, cladding cover (2) fixed connection is in the inboard of rubber sleeve (1), and a plurality of ceramic composite area (3) evenly distributed is in the inboard of cladding cover (2), fire-retardant layer (4) are filled between a plurality of ceramic composite area (3), a plurality of insulating shield cover (5) fixed mounting is in the inside on fire-retardant layer (4), a plurality of electrically conductive copper core (6) fixed mounting is in corresponding insulating shield cover (5).

2. The fire-resistant double-layer electric wire according to claim 1, wherein the insulating sheath (5) comprises a shield layer (51), a buffer layer (52), a heat-insulating layer (53), and a corrosion-resistant layer (54), the buffer layer (52) is fixedly mounted inside the shield layer (51), the heat-insulating layer (53) is fixedly mounted inside the buffer layer (52), and the corrosion-resistant layer (54) is fixedly mounted inside the heat-insulating layer (53).

3. The fire-resistant double-layered electric wire according to claim 2, wherein the shield layer (51) is a copper tape shield layer, the corrosion-resistant layer (54) is a polytetrafluoroethylene layer, the buffer layer (52) is a plastic foam layer, and the thermal insulation layer (53) is a high-alumina type aluminum silicate fiber layer.