CN213424683U

CN213424683U - Shielding flame-retardant cable

Info

Publication number: CN213424683U
Application number: CN202021313937.1U
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: 2021-06-11
Anticipated expiration: 2030-07-07

Abstract

The utility model provides a shielding flame-retardant cable, including sinle silk and cladding in the second insulating layer of sinle silk outer wall, the outer wall cladding of second insulating layer has the second fire-retardant layer, the outer wall cladding of second fire-retardant layer has the first insulating layer, the outer wall cladding of first insulating layer has the first shielding layer, the outer wall cladding of first shielding layer has the first fire-retardant layer; the cable core comprises a plurality of mutually twisted conductive wires, each conductive wire comprises a copper wire core and a third insulating layer coated on the outer wall of the copper wire core, the outer wall of the third insulating layer is coated with a second shielding layer, and the outer wall of the second shielding layer is coated with a third flame-retardant layer; the novel shielding and flame-retardant cable is novel in structure, can provide multiple shielding effects and flame-retardant effects, and ensures good shielding and flame-retardant performances.

Description

Shielding flame-retardant cable

Technical Field

The utility model relates to a cable field, more specifically relates to a shielding flame retarded cable.

Background

The control cable is mainly applied to a control loop between electrical equipment, is used as a connecting line between various electrical instruments and automation devices, and plays a role in transmitting various electric energy or control signals, so that the whole electrical system can be safely and reliably operated. With the increasing automation degree of electrical equipment and the attention to environmental protection, the control cable of the connecting line between an electrical instrument, an automation device and the like is required to have the performances of flame retardance, high temperature resistance, environmental protection, softness, interference resistance and the like, and simultaneously, the requirements of excellent electrical performance, excellent machinery and the like are also ensured.

At present, the electromagnetic interference prevention shielding layer adopted by the control cable mainly adopts a metal shielding layer, but most of the existing shielding structures are only provided with one layer, the shielding effect is limited, and the shielding function has obvious space for improving; and the common shielded cable has no flame retardant effect.

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 shielding flame retardant cable, its novel structure can provide multiple shielding effect and flame retardant efficiency, guarantees good shielding and flame retardant property.

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

the utility model provides a shielding flame-retardant cable, including sinle silk and cladding in the second insulating layer of sinle silk outer wall, the outer wall cladding of second insulating layer has the second fire-retardant layer, the outer wall cladding of second fire-retardant layer has the first insulating layer, the outer wall cladding of first insulating layer has the first shielding layer, the outer wall cladding of first shielding layer has the first fire-retardant layer; the sinle silk includes many electric conductors of transposition each other, the electric conductor include the copper core and cladding in the third insulating layer of copper core outer wall, the outer wall cladding of third insulating layer has the second shielding layer, the outer wall cladding of second shielding layer has the fire-retardant layer of third.

The utility model discloses in the technical scheme of preferred, the fire-retardant layer of second includes many fire-retardant strips, many the winding of fire-retardant strip is located the outer wall of second insulating layer.

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

The utility model discloses in the technical scheme of preferred, many the middle part of conductor wire is equipped with the support bar, many the conductor wire winds the outside transposition of support bar.

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

In the preferred embodiment of the present invention, the first shielding layer and the second shielding layer are metal mesh layers.

In the preferred embodiment of the present invention, the first flame-retardant layer and the third flame-retardant layer are made of halogen-free flame-retardant polyolefin material.

The utility model has the advantages that:

the utility model provides a shielding flame-retardant cable, its novel structure, the design of first fire-retardant layer, second fire-retardant layer can carry out whole fire-retardant protection to the core, the design of first shielding layer can carry out whole shielding protection to the core; the third flame-retardant layer can perform independent flame-retardant protection on the copper wire cores, and the second shielding layer can perform independent shielding effect on the copper wire cores, so that the interference between the copper wire cores can be prevented while the external interference is prevented; the integral structure can provide multiple shielding effect and flame retardant effect, and ensures good shielding and flame retardant property.

Drawings

Fig. 1 is a schematic structural diagram of a shielded flame-retardant cable disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a conductive wire disclosed in 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; 300. a first insulating layer; 400. A first shielding layer; 500. a first flame retardant layer; 600. a conductive wire; 610. a copper wire core; 620. a third insulating layer; 630. a second shielding layer; 640. a third flame retardant layer; 700. a support strip.

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 and fig. 2, an embodiment of the present invention discloses a shielding flame-retardant cable, which includes a core and a second insulating layer 100 coated on an outer wall of the core, an outer wall of the second insulating layer 100 is coated with a second flame-retardant layer 200, an outer wall of the second flame-retardant layer 200 is coated with a first insulating layer 300, an outer wall of the first insulating layer 300 is coated with a first shielding layer 400, and an outer wall of the first shielding layer 400 is coated with a first flame-retardant layer 500; the sinle silk includes many electric conductors 600 of transposition each other, electric conductor 600 include copper core 610 and cladding in the third insulating layer 620 of copper core 610 outer wall, the outer wall cladding of third insulating layer 620 has second shielding layer 630, the outer wall cladding of second shielding layer 630 has third fire-retardant layer 640.

The shielding flame-retardant cable is novel in structure, the first flame-retardant layer 500 and the second flame-retardant layer 200 can perform overall flame-retardant protection on the cable core, and the first shielding layer 400 can perform overall shielding protection on the cable core; the third flame retardant layer 640 can perform independent flame retardant protection on the copper wire cores 610, and the second shielding layer 630 can perform independent shielding effect on the copper wire cores 610, so that the interference between the copper wire cores 610 can be prevented while the external interference is prevented; the integral structure can provide multiple shielding effect and flame retardant effect, and ensures good shielding and flame retardant property.

Further, the second flame retardant layer 200 includes a plurality of flame retardant strips 210, and the plurality of flame retardant strips 210 are wound on the outer wall of the second insulating layer 100; the flame-retardant strips 210 are flame-retardant fireproof aramid ropes; this structural design can be better guarantee the flame retardant efficiency of the fire-retardant layer 200 of second, and fire-retardant fire prevention aramid fiber rope is common fire-retardant material on the market, and aramid fiber rope can be fire-retardant, also keeps sufficient compliance.

Further, a support bar 700 is arranged in the middle of the plurality of conductive wires 600, and the plurality of conductive wires 600 are twisted around the outer side of the support bar 700.

Further, the first insulating layer 300, the second insulating layer 100, and the third insulating layer 620 are all made of polyethylene material; the insulating layer of the type is a common insulating structure, the manufacturing cost is low, and the insulating property is good.

Further, the first shielding layer 400 and the second shielding layer 630 are metal mesh layers; the metal mesh layer is a shielding layer structure commonly used for cables, can ensure a certain shielding effect and also can keep enough flexibility.

Further, the first flame retardant layer 500 and the third flame retardant layer 640 are both made of halogen-free flame retardant polyolefin material; the halogen-free flame-retardant polyolefin material is a common flame-retardant layer material on the market, is high-temperature resistant, has the characteristics of non-flammability and no generation of hydrogen halide gas, and prevents 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 shielded flame retardant cable characterized by:

the cable comprises a cable core and a second insulating layer (100) wrapping the outer wall of the cable core, wherein the outer wall of the second insulating layer (100) is wrapped with a second flame-retardant layer (200), the outer wall of the second flame-retardant layer (200) is wrapped with a first insulating layer (300), the outer wall of the first insulating layer (300) is wrapped with a first shielding layer (400), and the outer wall of the first shielding layer (400) is wrapped with a first flame-retardant layer (500);

the sinle silk includes many electric leads (600) of transposition each other, electric lead (600) include copper core (610) and cladding in third insulating layer (620) of copper core (610) outer wall, the outer wall cladding of third insulating layer (620) has second shielding layer (630), the outer wall cladding of second shielding layer (630) has third fire-retardant layer (640).

2. A shielded flame retardant cable according to claim 1, wherein:

the second flame-retardant layer (200) comprises a plurality of flame-retardant strips (210), and the flame-retardant strips (210) are wound on the outer wall of the second insulating layer (100).

3. A shielded flame retardant cable according to claim 2, wherein:

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

4. A shielded flame retardant cable according to claim 1, wherein:

the middle of many electrically conductive wire (600) is equipped with support bar (700), and many electrically conductive wire (600) winds the outside transposition of support bar (700).

5. A shielded flame retardant cable according to claim 1, wherein:

the first insulating layer (300), the second insulating layer (100), and the third insulating layer (620) are made of a polyethylene material.

6. A shielded flame retardant cable according to claim 1, wherein:

the first shielding layer (400) and the second shielding layer (630) are both metal mesh layers.

7. A shielded flame retardant cable according to claim 1, wherein:

the first flame retardant layer (500) and the third flame retardant layer (640) are both made of a halogen-free flame retardant polyolefin material.