CN212907153U

CN212907153U - Power line

Info

Publication number: CN212907153U
Application number: CN202022181783.1U
Authority: CN
Inventors: 聂胜云
Original assignee: Suzhou Ele Mfg Co ltd
Current assignee: Suzhou Ele Mfg Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-04-06
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a power cord, it includes the insulating overcoat of two piece at least power supply lines and this two piece at least power supply lines of cladding, and wherein, the outside cladding of the insulating layer of these two piece at least power supply lines has the shielding layer, and the shielding layer outside of an at least power supply line in these two piece at least power supply lines is provided with another insulating layer again for make the shielding layer mutual isolation each other of every power supply line in these two piece at least power supply lines. The utility model discloses a set up the insulating layer again outside the shielding layer for shielding layer between each current-carrying line keeps mutual independence, is convenient for realize the monitoring to current-carrying line leakage current through the shielding layer.

Description

Power line

Technical Field

The utility model relates to an electric field especially relates to a power cord.

Background

The current leakage current detection protection device has the advantages that the current-carrying wires (such as power supply wires of a live wire, a zero wire and the like) in the power line for monitoring and protecting can be influenced mutually, so that the accurate safety detection of the leakage current of the current-carrying wires can be not facilitated, and the potential safety hazard is generated.

Therefore, there is a need for a power line that can facilitate more accurate safety detection of leakage current of a current-carrying line.

SUMMERY OF THE UTILITY MODEL

Based on the above problem, the utility model provides a power cord, it includes two piece at least power supply lines and cladding the insulating overcoat of two piece at least power supply lines, wherein, the outside cladding of the insulating layer of two piece at least power supply lines has the shielding layer, the shielding layer outside of at least one power supply line among two piece at least power supply lines is provided with another insulating layer again, is used for making the shielding layer of every power supply line among two piece at least power supply lines is mutual isolation each other.

In one embodiment, the shielding layer of the at least one supply line and the further insulating layer corresponding thereto may be formed from an outer insulating, inner conducting, integral material.

In one embodiment, the shielding layer covering the insulating layer may be woven from a metal or other conductive material.

In one embodiment, the shielding layer covering the insulating layer may be wound or covered with a metal foil.

In one embodiment, the shielding layer covering the insulating layer may be a winding structure composed of at least one metal wire.

In one embodiment, the another insulating layer is integrally formed of an insulating plastic material.

In one embodiment, the further insulating layer is wound or clad with an insulating film, tape or sheet material.

The utility model discloses a power cord for shielding protective layer mutually independent between each current-carrying line realizes current-carrying line leakage current's monitoring through the shielding layer.

Drawings

Embodiments are shown and described with reference to the drawings. These drawings are provided to illustrate the basic principles and thus only show the aspects necessary for understanding the basic principles. The figures are not to scale. In the drawings, like reference numerals designate similar features.

Fig. 1A is a schematic view of a first embodiment of a power cord of the present invention;

FIG. 1B is a cross-sectional view of FIG. 1A;

fig. 2A is a schematic view of a power cord according to a second embodiment of the present invention;

FIG. 2B is a cross-sectional view of FIG. 2A;

fig. 3A is a schematic view of a power cord according to a third embodiment of the present invention;

fig. 3B is a cross-sectional view of fig. 3A.

Detailed Description

In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings illustrate, by way of example, specific embodiments in which the invention may be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

As used herein, the terms "include," "include," and similar terms are to be construed as open-ended terms, i.e., "including/including but not limited to," meaning that additional content can be included as well. The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment," and the like.

The utility model provides a power cord, it includes two piece at least power supply lines and cladding the insulating overcoat of two piece at least power supply lines, wherein, the outside cladding of the insulating layer of two piece at least power supply lines has the shielding layer, the shielding layer outside of at least one power supply line in two piece at least power supply lines is provided with another insulating layer again, be used for with in two piece at least power supply lines with the shielding layer of other power supply lines that at least one power supply line is different keeps apart.

In the first embodiment shown in fig. 1A and 1B, the power supply line 100 includes a live line (L)11, a neutral line (N)12, a ground line (G)13, shielding layers (for leakage detection) 141 and 142, a filler 15, and an insulating outer cover 16. The power cord 100 is circular in shape, with the live, neutral and

ground wires

11, 12 and 13 being coated with respective

insulating layers

11A, 12A and 13A, respectively, and in fig. 1A, the

shielding layers

141 and 142 surrounding the respective

insulating layers

11A and 12A, respectively, it being understood that the power cord 100 may also be flat wires side-by-side, or the power cord 100 may be of other suitable shapes that can be finished. It is understood that in other embodiments, other signal lines may also be included in the power supply line 100. The outside of the shielding layer 141 is covered with the insulating layer 18 and the outside of the shielding layer 142 is not covered with the insulating layer 18, but it is understood that in another embodiment, the outside of the shielding layer 142 is covered with the insulating layer 18 and the outside of the shielding layer 141 is not covered with the insulating layer 18 (not shown in the drawings). The

shielding layers

141, 142 may be braided with metal (e.g., copper, aluminum, etc.) or other conductive materials, the

shielding layers

141, 142 may also be a wound structure (e.g., may be wound or clad with metal foil) composed of at least one metal wire, or the

shielding layers

141, 142 may also be any suitable combination of structures. The insulating layer 18 may be formed by integrally molding an insulating plastic material, or may be formed by coating an insulating paper, an insulating cotton, an insulating tape, an insulating sheet material, or the like, which has electrical insulating properties.

In the second embodiment as shown in fig. 2A and 2B, the remaining portion of the power supply line 200 is different from the first embodiment shown in fig. 1A and 1B in that the

shielding layers

141 and 142 are covered with

insulating layers

181 and 182, respectively, at the outer sides thereof.

In the third embodiment shown in fig. 3A and 3B, the rest of the power line 300 is covered with the first embodiment shown in fig. 1A and 1B, and the

shielding layers

141 and 142 may be formed by an integral material with external insulation and internal conduction (i.e. one surface has conductivity and the other surface has insulation), instead of providing the insulating layer and the shielding layer as a separate structure.

In another embodiment, either

shield

141 or 142 may simultaneously surround both live and

neutral conductors

11 and 12, with insulating structure 18 surrounding shield 141 and ground 23 and shield 142 surrounding insulating structure 18, it being understood that either shield 141 or shield 142 may simultaneously surround multiple power supply wires (current carrying cores).

The utility model discloses a set up the insulating layer again outside the shielding layer for shielding layer between each current-carrying line keeps mutual independence, is convenient for realize the monitoring to current-carrying line leakage current through the shielding layer.

Thus, while the present invention has been described with reference to specific examples, which are intended to be illustrative only and not to be limiting of the invention, it will be apparent to those of ordinary skill in the art that changes, additions or deletions may be made to the disclosed embodiments without departing from the spirit and scope of the invention.

Claims

1. A power supply line comprising at least two power supply lines and an insulating coating covering the at least two power supply lines, characterized in that the outer faces of the insulating layers of the at least two power supply lines are coated with a shielding layer, and that the outer face of the shielding layer of at least one of the at least two power supply lines is provided with a further insulating layer for isolating the shielding layers of each of the at least two power supply lines from each other.

2. The electrical power cord as set forth in claim 1, wherein the shielding layer of the at least one electrical power supply line and the another insulation layer corresponding thereto may be formed of an outer insulating inner conductive integral material.

3. The electrical power cord as set forth in claim 1, wherein the shielding layer covering the insulating layer is braided from a metal or other conductive material.

4. The electrical power cord as set forth in claim 1, wherein the shielding layer covering the insulating layer is wound or covered with a metal foil.

5. The electrical power cord as claimed in claim 1, wherein the shielding layer covering the insulating layer is a wound structure composed of at least one metal wire.

6. The electrical power cord as set forth in claim 1, wherein said another insulating layer is integrally formed of an insulating plastic material.

7. The electrical power cord as claimed in claim 1, wherein the further insulating layer is wound or clad with an insulating film, tape or sheet material.