CN213483442U

CN213483442U - Super-shielded integrated cable

Info

Publication number: CN213483442U
Application number: CN202022977455.2U
Authority: CN
Inventors: 丁炳湘; 余水泉; 詹必武; 朱娟娟; 杨忠卫
Original assignee: Fujian Guowei Electronic Technology Co ltd
Current assignee: Fujian Guowei Electronic Technology Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-06-18
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a super-shielding composite cable, which belongs to the field of cables and comprises a central shielding core piece and a plurality of conductive cores, wherein the outer surface of the central shielding core piece is provided with an aluminum foil shielding layer, and the conductive cores are twisted outside the aluminum foil shielding layer; the end part of the central shielding core piece is provided with a grounding wire, the grounding wire is electrically connected with the aluminum foil shielding layer, and the outer side of the conductive core is provided with an outer shielding component. The electric power gathered on the surface of the conductive core can be led out and grounded through the aluminum foil shielding layer, so that the electric field tends to be stable, and the use safety is ensured.

Description

Super-shielded integrated cable

Technical Field

The utility model relates to a cable field especially relates to a super shielding composite cable.

Background

The electric wire and cable are materials used for electric power, communication and related transmission purposes, the electric wire and cable do not have strict limits, products with few cores, small product diameters and simple structures are generally called electric wires, products without insulation are called bare wires, other products are called cables, in recent years, with the development of social economy, the electric power and telecommunication industries are rapidly developed, more convenience and better life experience are brought to people, and the electric wire and cable are widely used as carriers of information transmission.

When the cross section of a conductor of the existing shielding type cable is not very large, the discharging capacity is limited, and particularly when static electricity is prevented, certain risk can be generated due to the fact that discharging cannot be completed quickly.

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 super-shielding composite cable, to the partial discharge that inhomogeneous electric field leads to, ground connection that can be quick is derived, guarantees the security of using.

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

the utility model provides a super-shielding integrated cable, including central shielding core member and a plurality of electrically conductive cores, the outer surface of the central shielding core member is provided with an aluminum foil shielding layer, and a plurality of electrically conductive cores are twisted outside the aluminum foil shielding layer; the end part of the central shielding core piece is provided with a grounding wire, the grounding wire is electrically connected with the aluminum foil shielding layer, and the outer side of the conductive core is provided with an outer shielding component.

The utility model discloses preferred technical scheme lies in, center shielding chipware middle part is provided with insulating plug, the aluminium foil shielding layer weave twine in the surface of insulating plug.

The utility model discloses preferred technical scheme lies in, outer shielding subassembly includes first shielding layer and outer insulating casing, first shielding layer weave in the outside of electrically conductive core.

The utility model discloses preferred technical scheme lies in, outer insulating casing includes the insulating layer, the insulating layer crowded package in the first shielding layer outside, the inside second shielding layer that is provided with of insulating layer, the insulating layer has the part to be located the second shielding layer with between the first shielding layer, in order to completely cut off the second shielding layer with first shielding layer.

The utility model discloses preferred technical scheme lies in, outer insulating casing's middle part is provided with insulating connecting portion, insulating connecting portion with be provided with the water conservancy diversion line between the first shielding layer, the one end of water conservancy diversion line with first shielding layer electric connection, the other end of water conservancy diversion line extends to the outside of insulating connecting portion.

The utility model discloses preferred technical scheme lies in, the water conservancy diversion line outside is provided with insulating foreskin, the middle part of water conservancy diversion line is provided with the electric conductor, the electric conductor with first shielding layer electric connection.

The utility model discloses preferred technical scheme lies in, the lateral wall of insulating connecting portion is provided with the recess, the recess width with water conservancy diversion line diameter phase-match, when not using, the water conservancy diversion line is located in the recess.

The utility model has the advantages that:

the utility model provides a super-shielding integrated cable, including central shielding core member and a plurality of electrically conductive cores, the outer surface of the central shielding core member is provided with an aluminum foil shielding layer, and a plurality of electrically conductive cores are twisted outside the aluminum foil shielding layer; the end part of the central shielding core piece is provided with a grounding wire, the grounding wire is electrically connected with the aluminum foil shielding layer, and the outer side of the conductive core is provided with an outer shielding component. The electric power gathered on the surface of the conductive core can be led out and grounded through the aluminum foil shielding layer, so that the electric field tends to be stable, and the use safety is ensured.

Drawings

Fig. 1 is a schematic view of an overall structure of an ultra-shielded composite cable according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an ultra-shielded composite cable according to an embodiment of the present invention;

in the figure:

1. an outer shield assembly; 2. a diversion line; 4. a conductive core; 5. a central shielding core member; 11. an insulating connection portion; 12. a first shielding layer; 13. an outer insulating shell; 21. an insulating sheath; 22. an electrical conductor; 51. an aluminum foil shielding layer; 52. a ground lead; 53. an insulating core rod; 111. a groove; 131. an insulating layer; 132. and a second shielding layer.

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. 1-2, the embodiment provides an ultra-shielding composite cable, which includes a central shielding core 5 and a plurality of conductive cores 4, wherein an aluminum foil shielding layer 51 is disposed on an outer surface of the central shielding core 5, and the plurality of conductive cores 4 are twisted outside the aluminum foil shielding layer 51; the end of the central shielding core 5 is provided with a grounding conductor 52, the grounding conductor 52 is electrically connected with the aluminum foil shielding layer 51, and the outer shielding assembly 1 is arranged outside the conductive core 4. The cable is formed by twisting a plurality of conductive cores 4, an air gap is easily formed between the conductive cores and the insulating layer 131, the surface of the conductor is not smooth, and electric field concentration is caused. The discharge can be prevented by contacting the multi-strand conductive core 4 at the center position by the aluminum foil shield 51 and then connecting to the ground by the ground wire 52. Meanwhile, because the aluminum foil shielding layer 51 is located at the central position, the aluminum foil shielding layer 51 is not easy to generate a gap when the cable is twisted and bent, so that local convenience is not easy to generate, and the safety of the cable is ensured.

Preferably, an insulating core rod 53 is disposed in the middle of the central shielding core member 5, and the aluminum foil shielding layer 51 is braided and wound around the outer surface of the insulating core rod 53. The insulating core rod 53 supports the aluminum foil shielding layer 51, so that the aluminum foil shielding layer 51 can be in closer contact with the conductive core 4.

Preferably, the outer shield assembly 1 includes a first shield layer 12 and an outer insulating housing 13, and the first shield layer 12 is woven outside the conductive core 4. Under the action of the aluminum foil shielding layer 51, the potential of the outer wall of the conductive core 4 is the same as the ground, and then the first shielding layer 12 can prevent discharge between the conductive core 4 and the outer insulating shell 13, so that the best shielding effect is ensured under the cooperation of the conductive core 4 and the outer insulating shell 13.

Preferably, the outer insulating housing 13 includes an insulating layer 131, the insulating layer 131 is extruded outside the first shielding layer 12, a second shielding layer 132 is disposed inside the insulating layer 131, and a part of the insulating layer 131 is located between the second shielding layer 132 and the first shielding layer 12 to isolate the second shielding layer 132 from the first shielding layer 12. The double-layer shielding layer can be used for achieving better effect in places with special requirements. The shielding layer is fused into the insulating layer 131, so that the second shielding layer 132 has higher stability and can have a good shielding effect when twisted.

Preferably, an insulating connecting portion 11 is disposed in the middle of the outer insulating casing 13, a diversion line 2 is disposed between the insulating connecting portion 11 and the first shielding layer 12, one end of the diversion line 2 is electrically connected to the first shielding layer 12, and the other end of the diversion line 2 extends to the outside of the insulating connecting portion 11. For a longer cable, only one end of the first shielding layer 12 is grounded, so that the discharge is not timely made, and the diversion line 2 is arranged in the middle of the long cable, so that the first shielding layer 12 can discharge from two ends to the middle, and the ground discharge speed is greatly improved. The insulation connecting part 11 is processed by injection molding in a mode of a mold, and the guide line 2 is exposed outside during injection molding.

Preferably, an insulating sheath 21 is disposed outside the guide line 2, an electric conductor 22 is disposed in the middle of the guide line 2, and the electric conductor 22 is electrically connected to the first shielding layer 12. The arrangement of the insulating sheath 21 can provide a better insulating effect when the guide line 2 passes through the second shielding layer 132, so that the first shielding layer 12 and the second shielding layer 132 can independently function.

Preferably, the outer side wall of the insulating connecting portion 11 is provided with a groove 111, the width of the groove 111 is matched with the diameter of the guide line 2, and when the insulating connecting portion is not used, the guide line 2 is located in the groove 111. The storage can be convenient when the diversion line 2 is not needed.

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. An ultra-shielding composite cable is characterized in that:

the shielding core piece comprises a central shielding core piece (5) and a plurality of conductive cores (4), wherein an aluminum foil shielding layer (51) is arranged on the outer surface of the central shielding core piece (5), and the plurality of conductive cores (4) are twisted on the outer side of the aluminum foil shielding layer (51);

the end part of the central shielding core piece (5) is provided with a grounding wire (52), the grounding wire (52) is electrically connected with the aluminum foil shielding layer (51), and the outer side of the conductive core (4) is provided with an outer shielding component (1).

2. The ultra-shielded composite cable of claim 1, wherein:

an insulating core rod (53) is arranged in the middle of the central shielding core member (5), and the aluminum foil shielding layer (51) is woven and wound on the outer surface of the insulating core rod (53).

3. The ultra-shielded composite cable of claim 1, wherein:

the outer shielding assembly (1) comprises a first shielding layer (12) and an outer insulating shell (13), wherein the first shielding layer (12) is woven on the outer side of the conductive core (4).

4. The ultra-shielded composite cable of claim 3, wherein:

outer insulating housing (13) include insulating layer (131), insulating layer (131) crowded package in the first shielding layer (12) outside, insulating layer (131) inside is provided with second shielding layer (132), insulating layer (131) have the part to be located second shielding layer (132) with between first shielding layer (12), with isolated second shielding layer (132) with first shielding layer (12).

5. The ultra-shielded composite cable of claim 3, wherein:

the middle part of outer insulating casing (13) is provided with insulating connecting portion (11), insulating connecting portion (11) with be provided with between first shielding layer (12) water conservancy diversion line (2), the one end of water conservancy diversion line (2) with first shielding layer (12) electric connection, the other end of water conservancy diversion line (2) extends to the outside of insulating connecting portion (11).

6. The ultra-shielded composite cable of claim 5, wherein:

an insulating wrapping (21) is arranged on the outer side of the flow guide line (2), an electric conductor (22) is arranged in the middle of the flow guide line (2), and the electric conductor (22) is electrically connected with the first shielding layer (12).

7. The ultra-shielded composite cable of claim 5, wherein:

the outer side wall of the insulating connecting part (11) is provided with a groove (111), the width of the groove (111) is matched with the diameter of the flow guide line (2), and when the insulating connecting part is not used, the flow guide line (2) is located in the groove (111).