CN212967168U

CN212967168U - Flexible fireproof cable

Info

Publication number: CN212967168U
Application number: CN202021313936.7U
Authority: CN
Inventors: 陈永生
Original assignee: Hainan Hailan Wire And Cable Co ltd
Current assignee: Hainan Yedao wire and cable Co.,Ltd.
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-04-13
Anticipated expiration: 2030-07-07

Abstract

The utility model provides a flexible fireproof cable, which comprises a wire core and a second insulating layer coated outside the wire core, wherein a second flame-retardant layer is coated outside the second insulating layer, a first insulating layer is coated outside the second flame-retardant layer, and a first flame-retardant layer is coated outside the first insulating layer; the second flame-retardant layer comprises a plurality of flame-retardant strips and a hollow flame-retardant hose, and the hollow flame-retardant hose and the flame-retardant strips are arranged on the outer side of the second insulating layer in a winding mode at intervals; the fireproof flame-retardant fabric is novel in structure, can provide good fireproof flame-retardant performance, can also keep certain flexibility, and is convenient to produce and use.

Description

Flexible fireproof cable

Technical Field

The utility model relates to a cable field, more specifically relates to a flexible fireproof cable.

Background

The fireproof cable is applied to various places with dense personnel and high-end places and has certain continuous power supply time capacity under the condition of fire.

The fireproof cable in the prior art adopts a seamless copper pipe to be arranged outside a cable body as a sheath, and a magnesium oxide crystal powder insulating layer is wrapped outside the cable body, and the cable body is generally a copper bar conductor and has the advantages of spraying resistance, mechanical impact resistance, strong current-carrying capacity and the like. However, because of the seamless copper pipe, the fireproof cable has the remarkable defects of high production equipment investment, poor bending performance, high construction difficulty and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing a flexible fireproof cable, its novel structure can provide good fire prevention fire behavior, also can keep certain compliance, is convenient for produce and use.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a flexible fireproof cable, which comprises a wire core and a second insulating layer coated outside the wire core, wherein a second flame-retardant layer is coated outside the second insulating layer, a first insulating layer is coated outside the second flame-retardant layer, and a first flame-retardant layer is coated outside the first insulating layer; the second flame-retardant layer comprises a plurality of flame-retardant strips and a hollow flame-retardant hose, and the hollow flame-retardant hose and the flame-retardant strips are arranged at intervals around the outer side of the second insulating layer.

The utility model discloses in the technical scheme of preferred, the sinle silk includes that at least three conductor wires strand form, and the middle part presss from both sides and is equipped with the tractive rope body.

In the preferred technical scheme of the utility model, the hollow flame-retardant hose is made of flame-retardant rubber.

The utility model discloses in the technical scheme of preferred, fire-retardant strip is fire-retardant fire prevention aramid fiber rope.

In the preferred embodiment of the present invention, the first insulating layer and the second insulating layer are made of polyethylene material.

In the preferred technical solution of the present invention, the first flame retardant layer is made of halogen-free flame retardant polyolefin material.

The utility model has the advantages that:

the utility model provides a flexible fireproof cable, its novel structure, the design of first insulating layer, second insulating layer can provide good insulating properties; the design of the first flame-retardant layer and the second flame-retardant layer can provide good flame-retardant and fireproof performance; and the second flame-retardant layer is formed by winding hollow flame-retardant hoses and flame-retardant strips which are mutually spaced, so that the flame-retardant fireproof material provides good fireproof flame-retardant performance, can keep certain flexibility, and is convenient to produce and use.

Drawings

Fig. 1 is a schematic structural diagram of a flexible fireproof cable according to an embodiment of the present invention.

In the figure:

100. a second insulating layer; 200. a second flame retardant layer; 210. a flame retardant strip; 220. a hollow flame retardant hose; 300. a first insulating layer; 400. a first flame retardant layer; 500. a conductive wire; 600. and pulling the rope body.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the embodiment of the present invention discloses a flexible fireproof cable, which includes a wire core, a second insulating layer 100 covering the outside of the wire core, a second flame retardant layer 200 covering the outside of the second insulating layer 100, a first insulating layer 300 covering the outside of the second flame retardant layer 200, and a first flame retardant layer 400 covering the outside of the first insulating layer 300; the second flame retardant layer 200 includes a plurality of flame retardant strips 210 and a hollow flame retardant hose 220, and the hollow flame retardant hose 220 and the flame retardant strips 210 are spaced apart from each other and wound around the outside of the second insulating layer 100.

The flexible fireproof cable is novel in structure, and the design of the first insulating layer 300 and the second insulating layer 100 can provide good insulating performance; the design of the first flame-retardant layer 400 and the second flame-retardant layer 200 can provide good flame-retardant and fireproof performance; and the second flame-retardant layer 200 is formed by winding hollow flame-retardant hoses 220 and flame-retardant strips 210 which are spaced from each other, so that good fireproof flame-retardant performance is provided, certain flexibility can be kept, and the production and the use are convenient.

Further, the wire core comprises at least three conductive wires 500 which are twisted, and a draw rope body 600 is clamped in the middle of the wire core; the structural design can facilitate subsequent dispersion and expansion of the conductive wire 500, and pulling the pulling rope body 600 can facilitate breaking the first insulating layer 300, the second insulating layer 100, the first flame-retardant layer 400 and the second flame-retardant layer 200, so as to facilitate scattering of the conductive wire 500; the conductive wire 500 includes a copper wire and an insulating sheath covering the outer side of the copper wire.

Further, the hollow flame-retardant hose 220 is made of flame-retardant rubber; the hollow flame retardant hose 220 made of the material can provide a certain flame retardancy and ensure a certain flexibility.

Further, the flame-retardant strip 210 is a flame-retardant fireproof aramid rope, which is a common flame-retardant material on the market, and the aramid rope can be flame-retardant and can also maintain sufficient flexibility.

Further, the first insulating layer 300 and the second insulating layer 100 are made of polyethylene material, and the insulating layer is a common insulating structure, and has low manufacturing cost and good insulating property.

Further, the first flame retardant layer 400 is made of a halogen-free flame retardant polyolefin material, which is a common flame retardant layer material on the market, and is not only high temperature resistant, but also nonflammable and does not generate hydrogen halide gas, thereby preventing secondary disasters.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A flexible fireproof cable is characterized in that:

the cable comprises a cable core, wherein a second insulating layer (100) is coated on the outer side of the cable core, a second flame-retardant layer (200) is coated on the outer side of the second insulating layer (100), a first insulating layer (300) is coated on the outer side of the second flame-retardant layer (200), and a first flame-retardant layer (400) is coated on the outer side of the first insulating layer (300); the second flame-retardant layer (200) comprises a plurality of flame-retardant strips (210) and hollow flame-retardant hoses (220), wherein the hollow flame-retardant hoses (220) and the flame-retardant strips (210) are arranged on the outer side of the second insulating layer (100) in a mutually spaced and wound mode.

2. A flexible fire-resistant cable according to claim 1, wherein:

the cable core comprises at least three conductive wires (500) which are twisted, and a traction rope body (600) is clamped in the middle of the cable core.

3. A flexible fire-resistant cable according to claim 1, wherein:

the hollow flame-retardant hose (220) is made of flame-retardant rubber.

4. A flexible fire-resistant cable according to claim 1, wherein:

the flame-retardant strip (210) is a flame-retardant fireproof aramid rope.

5. A flexible fire-resistant cable according to claim 1, wherein:

the first insulating layer (300) and the second insulating layer (100) are both made of polyethylene material.

6. A flexible fire-resistant cable according to claim 1, wherein:

the first flame retardant layer (400) is made of a halogen-free flame retardant polyolefin material.