CN214588185U

CN214588185U - Frequency conversion cable

Info

Publication number: CN214588185U
Application number: CN202121318850.8U
Authority: CN
Inventors: 高峰; 余纪炎; 方振华; 吕泳锋
Original assignee: KAIKAI CABLE TECHNOLOGY CO LTD
Current assignee: KAIKAI CABLE TECHNOLOGY CO LTD
Priority date: 2021-06-12
Filing date: 2021-06-12
Publication date: 2021-11-02
Anticipated expiration: 2031-06-12
Also published as: WO2022257376A1

Abstract

The utility model belongs to the technical field of the cable, refer in particular to a variable frequency cable, including three power sinle silks and three neutral sinle silks, the power sinle silk includes power sinle silk conductor, cladding at the outside power sinle silk insulating layer of power sinle silk conductor and cladding at the outside power sinle silk insulating layer semiconductive shield of power sinle silk insulating layer, the neutral sinle silk includes neutral sinle silk conductor, cladding at the outside neutral sinle silk insulating layer of neutral sinle silk conductor and cladding at the outside neutral sinle silk semiconductive shield of neutral sinle silk insulating layer, three power sinle silks and three neutral sinle silks are outside to be cabled through the sheath cladding the inside lining of sheath is equipped with copper strips shielding layer. The utility model discloses shielding nature is good between sinle silk and the sinle silk, effectively prevents to disturb.

Description

Frequency conversion cable

The technical field is as follows:

the utility model belongs to the technical field of the cable, refer in particular to a variable frequency cable.

Background art:

the frequency conversion cable is mainly used for connecting a frequency conversion power supply and a frequency conversion motor, is used for transmitting electric energy in a power transmission and distribution line with rated voltage of 1KV or below, and is particularly suitable for industries such as papermaking, metallurgy, metal processing, mines, railways, food processing and the like.

The frequency conversion cable generally comprises three power lines and three neutral lines, and the existing frequency conversion cable has poor shielding property and mutual interference among the lines.

The invention content is as follows:

the utility model aims at providing a frequency conversion cable, shielding nature is good between its sinle silk and the sinle silk, effectively prevents to disturb.

The utility model discloses a realize like this:

the utility model provides a variable frequency cable, includes three power sinle silks and three neutral sinle silks, power sinle silk includes power sinle silk conductor, cladding at the outside power sinle silk insulating layer of power sinle silk conductor and the power sinle silk semiconductive shield layer of cladding in power sinle silk insulating layer outside, neutral sinle silk includes neutral sinle silk conductor, cladding at the outside neutral sinle silk insulating layer of neutral sinle silk conductor and cladding at the outside neutral sinle silk semiconductive shield layer of neutral sinle silk insulating layer, three power sinle silks and three neutral sinle silk outsides are through sheath cladding stranding the inside lining of sheath has the copper strips shielding layer.

In the frequency conversion cable, the three neutral wire cores are arranged in the gaps of the three power wire cores at intervals.

In the frequency conversion cable, the three power wire cores and the three neutral wire cores are twisted into a cable core, and the copper strip shielding layer and the sheath are arranged outside the cable core.

In the above-mentioned variable frequency cable, the power core insulating layer and the neutral core insulating layer are made of cross-linked PE, the power core semi-conductive shielding layer and the neutral core semi-conductive shielding layer are made of EVA, and the sheath is made of plastic.

In the above-mentioned variable frequency cable, the power core insulating layer and the power core semi-conductive shielding layer are extruded and coated outside the power core conductor at the same time, and the neutral core insulating layer and the neutral core semi-conductive shielding layer are extruded and coated outside the neutral core conductor at the same time.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model discloses an outside cladding power sinle silk insulating layer of power sinle silk conductor, the outside cladding neutral sinle silk insulating layer of neutral sinle silk conductor effectively carry out insulation treatment to power sinle silk conductor and neutral sinle silk conductor; the power wire core insulating layer is externally coated with the power wire core semi-conductive shielding layer, the neutral wire core insulating layer is externally coated with the neutral wire core semi-conductive shielding layer, and the power wire core conductor and the neutral wire core conductor are effectively shielded, so that better shielding performance is achieved between the power wire core and the power wire core, between the power wire core and the neutral wire core, and between the neutral wire core and the neutral wire core, and interference is effectively prevented; the copper strip shielding layer is lined in the sheath, so that the interference of the outside to the power wire core and the neutral wire core is effectively prevented;

2. the three neutral wire cores of the utility model are arranged in the gaps of the three power wire cores at intervals, so that the shielding effect is good;

3. the utility model discloses a cladding is extruded simultaneously outside power core conductor to power core insulating layer and power core semi-conductive shielding layer, the cladding is extruded simultaneously outside neutral core conductor to neutral core insulating layer and neutral core semi-conductive shielding layer, reduces manufacturing procedure, low in production cost.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Reference numerals: 1. a power core conductor; 2. a power wire core insulating layer; 3. the power wire core semi-conductive shielding layer; 4. a neutral core conductor; 5. a neutral core insulating layer; 6. a neutral core semiconductive shielding layer; 7. a sheath; 8. and a copper strip shielding layer.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to fig. 1:

the utility model provides a variable frequency cable, includes three power sinle silks and three neutral sinle silks, power sinle silk includes power sinle silk conductor 1, the cladding is at power sinle silk insulating layer 2 of power sinle silk conductor 1 outside and cladding at power sinle silk insulating layer 2 outside power sinle silk semi-conductive shielding layer 3, neutral sinle silk includes neutral sinle silk conductor 4, cladding at neutral sinle silk insulating layer 5 of neutral sinle silk conductor 4 outside and cladding at neutral sinle silk insulating layer 5 outside neutral sinle silk semi-conductive shielding layer 6, three power sinle silks and three neutral sinle silk outsides become the cable through 7 cladding of sheath 7 the inside lining of sheath is equipped with copper strips shielding layer 8.

The utility model discloses power core conductor 1 outside cladding power core insulating layer 2, neutral conductor 4 outside cladding neutral core insulating layer 5 effectively carry out insulation treatment to power core conductor 1 and neutral conductor 4; the power wire core insulating layer 2 is externally coated with the power wire core semi-conductive shielding layer 3, the neutral wire core insulating layer 5 is externally coated with the neutral wire core semi-conductive shielding layer 6, and the power wire core conductor 1 and the neutral wire core conductor 4 are effectively shielded, so that better shielding performance is achieved between the power wire core and the power wire core, between the power wire core and the neutral wire core, and between the neutral wire core and the neutral wire core, and interference is effectively prevented; the copper strip shielding layer 8 is lined in the sheath 7, so that the interference of the outside to the power wire core and the neutral wire core is effectively prevented.

For better shielding effect, the three neutral wire cores are arranged in the gaps of the three power wire cores at intervals.

In order to enable the power wire cores and the neutral wire cores to be more compact and not easy to loose, improve the roundness of the cable and facilitate the cladding of the copper strip shielding layer 8 and the sheath 7, the three power wire cores and the three neutral wire cores are twisted into a cable core, and the copper strip shielding layer 8 and the sheath 7 are arranged outside the cable core.

Preferably, the power core insulating layer 2 and the neutral core insulating layer 5 are made of cross-linked PE, the power core semi-conductive shielding layer 3 and the neutral core semi-conductive shielding layer 6 are made of EVA, and the sheath 7 is made of plastic.

In order to reduce the processing procedures and the production cost, the power wire core insulating layer 2 and the power wire core semi-conductive shielding layer 3 are extruded and coated outside the power wire core conductor 1, and the neutral wire core insulating layer 5 and the neutral wire core semi-conductive shielding layer 6 are extruded and coated outside the neutral wire core conductor 4.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a variable frequency cable, includes three power sinle silks and three neutral sinle silks, its characterized in that: the power sinle silk includes power sinle silk conductor (1), cladding power sinle silk insulating layer (2) outside power sinle silk conductor (1) and cladding power sinle silk insulating layer (2) outside power sinle silk semi-conductive shielding layer (3), the neutral sinle silk includes neutral sinle silk conductor (4), cladding at neutral sinle silk insulating layer (5) outside neutral sinle silk insulating layer (4) and cladding at neutral sinle silk semi-conductive shielding layer (6) outside neutral sinle silk insulating layer (5), three power sinle silks and three neutral sinle silk outsides are through sheath (7) cladding stranding sheath (7) inside lining is equipped with copper strips shielding layer (8) in sheath (7).

2. A variable frequency cable according to claim 1, wherein: the three neutral wire cores are arranged in the gaps of the three power wire cores at intervals.

3. A variable frequency cable according to claim 1, wherein: the three power wire cores and the three neutral wire cores are twisted into a cable core, and a copper strip shielding layer (8) and a sheath (7) are arranged outside the cable core.

4. A variable frequency cable according to claim 1, wherein: the power wire core insulating layer (2) and the neutral wire core insulating layer (5) are made of cross-linked PE, the power wire core semi-conductive shielding layer (3) and the neutral wire core semi-conductive shielding layer (6) are made of EVA, and the sheath (7) is made of plastic.

5. A variable frequency cable according to claim 1, wherein: the power core insulating layer (2) and the power core semi-conductive shielding layer (3) are extruded out of the power core conductor (1) at the same time, and the neutral core insulating layer (5) and the neutral core semi-conductive shielding layer (6) are extruded out of the neutral core conductor (4) at the same time.