CN210142517U

CN210142517U - Flame-retardant wire

Info

Publication number: CN210142517U
Application number: CN201921221487.0U
Authority: CN
Inventors: 朱宝成; 李伟; 徐殿生; 徐英达; 朱宝华; 许占伟
Original assignee: Changchun Baocheng Albert Beijing Great Automotive Components Co Ltd
Current assignee: Changchun Baocheng Albert Beijing Great Automotive Components Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-03-13
Anticipated expiration: 2029-07-30

Abstract

A flame-retardant electric wire belongs to the technical field of electric wires. The technical problem that the electric wire does not have flame retardance in the prior art is solved. The flame-retardant wire comprises a core wire, an inner flame-retardant layer, an insulating layer and an outer flame-retardant layer; the core wire is a copper wire or a plurality of copper wires twisted together; the inner flame-retardant layer comprises a wrapping section, a fixing section and filler; the wrapping sections are multiple, and each wrapping section wraps the core wire; the fixing sections are multiple, each fixing section is a hollow cylinder with multiple hollowed-out parts on the outer wall, and the fixing sections are sleeved outside the core wire; the wrapping sections and the fixing sections are alternately arranged, the left ends and the right ends of the fixing sections are fixedly connected with the right ends and the left ends of the two adjacent wrapping sections respectively, and the outer surfaces of the joints of the fixing sections and the wrapping sections are aligned; the filler is filled in a gap formed by each fixed section and the core wire; the insulating layer is wrapped outside the inner flame-retardant layer; an outer flame retardant layer is coated on an outer surface of the insulating layer. The flame-retardant electric wire is good in flame retardance and high in safety, and the flexibility of the electric wire is not influenced.

Description

Flame-retardant wire

Technical Field

The utility model belongs to the technical field of the electric wire, concretely relates to fire-retardant electric wire.

Background

The electric wire is a wire for transmitting electric energy and is widely applied to the aspects of electric equipment, lighting circuits, household appliances and the like.

The electric wire is divided into a bare wire, an electromagnetic wire and an insulated wire. The insulated wire is the most common wire and is formed by coating a conductive core wire and an insulating material, wherein the conductive core wire is mainly made of aluminum or copper materials, and the insulating material on the outer layer is mainly made of polyvinyl chloride and polyolefin materials. The conductivity of copper materials is superior to that of aluminum materials, but the cost is higher; and the aluminum material has better flexibility and weaker conductivity. Although insulating materials such as polyvinyl chloride and polyolefin have good insulating property, materials such as polyvinyl chloride and polyolefin burn to release a large amount of highly toxic and corrosive HCL gas when a fire disaster occurs, escape and fire extinguishment are influenced, property loss is caused, and personal safety is threatened.

With the improvement of safety consciousness of people, the requirements of people on the performances of electric wires such as flame retardance, fire resistance and the like are higher and higher, and the outer layer of the electric wire in the prior art mainly plays an insulating role and cannot play a flame retardant role.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a solve the technical problem that the electric wire does not possess the fire resistance among the prior art, provide a fire-retardant electric wire.

The utility model provides a technical scheme as follows that above-mentioned technical problem took.

The flame-retardant wire comprises a core wire, an inner flame-retardant layer, an insulating layer and an outer flame-retardant layer;

the core wire is a copper wire or a plurality of copper wires twisted together;

the inner flame-retardant layer comprises a wrapping section, a fixing section and filler;

the wrapping sections are multiple, each wrapping section is a hollow cylinder and wraps the core wire, and the outer wall of the core wire is in close contact with the inner wall of the wrapping section;

the fixing sections are multiple, each fixing section is a hollow cylinder with multiple hollowed-out parts arranged on the outer wall, the fixing sections are sleeved outside the core wire, the thickness of each fixing section is 30-50% of that of each wrapping section, the wrapping sections and the fixing sections are alternately arranged, the left ends and the right ends of the fixing sections are fixedly connected with the right ends and the left ends of the two adjacent wrapping sections respectively, and the outer surfaces of the joints of the fixing sections and the wrapping sections are aligned; the wrapping section and the fixing section are made of flame-retardant resin;

the filler is filled in a gap formed by each fixed section and the core wire, the filling volume is 60-75% of the volume of the gap, and the filler is a solid flame retardant;

the insulating layer is a hollow cylinder and is wrapped outside the inner flame-retardant layer;

the outer flame-retardant layer is made of a fireproof coating and is coated on the outer surface of the insulating layer.

Furthermore, the copper wire is a galvanized copper wire or a bare copper wire.

Further, the plurality of wrapping sections and the plurality of fixing sections are integrally formed.

Further, the thickness of the wrapping section is 0.4-0.6 cm.

Further, the wrapping section and the fixing section are both made of fluororesin.

Further, the filler is one or more of aluminum hydroxide, magnesium hydroxide and borate.

Furthermore, the inner flame-retardant layer also comprises a barrier layer, the material of the barrier layer is gauze, and the gauze is stuck and fixed on the inner surface of each fixed section.

Further, the insulating layer is made of low-smoke flame-retardant polyethylene insulating material.

Further, the thickness of the insulating layer is 0.1-0.2 cm.

Furthermore, the fireproof coating is a cable fireproof coating.

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

the utility model discloses a fire-retardant electric wire fire resistance is good, and the security is high, and does not influence the electric wire pliability.

Drawings

Fig. 1 is a schematic structural view of an inner flame-retardant layer of a flame-retardant electric wire according to the present invention (filler is omitted in the drawing);

fig. 2 is a schematic structural view of an inner flame-retardant layer of the flame-retardant wire of the present invention;

fig. 3 is a schematic structural view of the flame-retardant wire of the present invention;

fig. 4 is a schematic structural view of the flame-retardant wire of the present invention;

in the figure, 1, a core wire, 2, an inner flame-retardant layer, 2-1, a wrapping section, 2-2, a fixing section, 2-3, a filler, 3, an insulating layer, 4 and an outer flame-retardant layer.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 4, the flame-retardant electric wire of the present invention includes a core wire 1, an inner flame-retardant layer 2, an insulating layer 3, and an outer flame-retardant layer 4.

The core wire 1 is a copper wire or a plurality of twisted copper wires, and is not particularly limited, and is determined by a person skilled in the art according to the actual transmission power of the wire. The copper wire is a galvanized copper wire or a bare copper wire.

The inner flame-retardant layer 2 comprises a wrapping section 2-1, a fixing section 2-2 and a filler 2-3. The wrapping sections 2-1 are multiple, each wrapping section 2-1 is a hollow cylinder and wraps the core wire 1, and the outer wall of the core wire 1 is in close contact with the inner wall of the wrapping section 2-1. The number of the fixed sections 2-2 is also multiple, each fixed section 2-1 is a hollow cylinder with a plurality of hollows arranged on the outer wall, the hollow shape is not particularly limited, the smaller the aperture is, the better the aperture is, and the larger the number is, the better the number is; the fixed section 2-2 is sleeved outside the core wire 1, the thickness of the fixed section 2-1 is 30-50% of that of the wrapping section 2-1, the wrapping sections 2-1 and the fixed sections 2-2 are alternately arranged, the left end and the right end of the fixed section 2-2 are fixedly connected with the right end and the left end of the two adjacent wrapping sections 2-1 respectively, and the outer surfaces of the joints of the fixed section 2-2 and the wrapping sections 2-1 are aligned. The wrapping section 2-1 and the fixing section 2-2 are made of flame-retardant resin such as fluororesin. Preferably, the plurality of wrapping sections 2-1 and the plurality of fixing sections 2-2 are integrally formed. The thickness of the wrapping section 2-1 is preferably 0.4-0.6 cm. The filler 2-3 is filled in the gap formed by each fixed section 2-2 and the core wire 1, and the filling volume is 60-75% of the volume of the gap. The filler 2-3 is solid flame retardant, such as one or more of aluminum hydroxide, magnesium hydroxide and borate. The inner flame-retardant layer 2 can also comprise a barrier layer, the material of the barrier layer is gauze, and the gauze is stuck and fixed on the inner surface of each fixed section 2-2 so as to prevent the filler 2-3 from falling from the hollow part of the fixed section 2-2 due to too small particle size.

Insulating layer 3 is the hollow circular cylinder, wraps up in the fire-retardant layer 2 outside, and the material of insulating layer 3 is low-smoke fire-retardant polyethylene insulating material etc.. The thickness of the insulating layer 3 is 0.1-0.2 cm.

The outer flame-retardant layer 4 is made of a fireproof paint, such as a cable fireproof paint, and is coated on the outer surface of the insulating layer 3.

Claims

1. The flame-retardant wire is characterized by comprising a core wire (1), an inner flame-retardant layer (2), an insulating layer (3) and an outer flame-retardant layer (4);

the core wire (1) is a copper wire or a plurality of copper wires twisted together;

the inner flame-retardant layer (2) comprises a wrapping section (2-1), a fixing section (2-2) and a filler (2-3);

the wrapping sections (2-1) are multiple, each wrapping section (2-1) is a hollow cylinder and wraps the core wire (1), and the outer wall of the core wire (1) is in close contact with the inner wall of the wrapping section (2-1);

the fixing sections (2-2) are multiple, each fixing section (2-2) is a hollow cylinder with a plurality of hollows arranged on the outer wall, the fixing sections (2-2) are sleeved outside the core wire (1), the thickness of each fixing section (2-2) is 30-50% of that of each wrapping section (2-1), the wrapping sections (2-1) and the fixing sections (2-2) are alternately arranged, the left end and the right end of each fixing section (2-2) are fixedly connected with the right end and the left end of each two adjacent wrapping sections (2-1), and the outer surfaces of the joints of the fixing sections (2-2) and the wrapping sections (2-1) are aligned; the wrapping section (2-1) and the fixing section (2-2) are made of flame-retardant resin;

the filler (2-3) is filled in a gap formed by each fixed section (2-2) and the core wire (1), the filling volume is 60-75% of the volume of the gap, and the filler (2-3) is a solid flame retardant;

the insulating layer (3) is a hollow cylinder and is wrapped outside the inner flame-retardant layer (2);

the outer flame-retardant layer (4) is made of fireproof paint and is coated on the outer surface of the insulating layer (3).

2. The flame-retardant electric wire according to claim 1, wherein the copper wire is a galvanized copper wire or a bare copper wire.

3. The flame-retardant electric wire according to claim 1, wherein the plurality of wrapping sections (2-1) and the plurality of fixing sections (2-2) are integrally formed.

4. Flame retardant wire according to claim 1 wherein the thickness of the wrapping section (2-1) is 0.4-0.6 cm.

5. The flame-retardant electric wire according to claim 1, wherein the materials of the wrapping section (2-1) and the fixing section (2-2) are both fluorine resins.

6. The flame-retardant electric wire according to claim 1, wherein the filler (2-3) is one of aluminum hydroxide, magnesium hydroxide, and borate.

7. The flame retardant wire according to claim 1, wherein the inner flame retardant layer (2) further comprises a barrier layer made of a gauze adhesively fixed on the inner surface of each fixing section (2-2).

8. Flame retardant wire according to claim 1, wherein the material of the insulating layer (3) is a low smoke flame retardant polyethylene insulation.

9. Flame retardant wire according to claim 1, wherein the thickness of the insulating layer (3) is 0.1-0.2 cm.

10. The flame retardant wire of claim 1 wherein the fire retardant coating is a cable fire retardant coating.