CN217485106U

CN217485106U - Low-noise cable

Info

Publication number: CN217485106U
Application number: CN202221208039.9U
Authority: CN
Inventors: 廖锦仁; 王志辉; 彭立沙; 欧阳湘璋; 杨淞涵; 周泽乔; 杨洪文; 江和海; 陈少龙
Original assignee: Guangzhou Nanyang Cable Group Co ltd
Current assignee: Guangzhou Nanyang Cable Group Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-23
Anticipated expiration: 2032-05-19

Abstract

The utility model discloses a low-noise cable, which can reduce the friction between the insulating layer and the inner conductor when the low-noise cable vibrates or bends and reduce the electric noise by arranging a double-layer insulating layer comprising a first insulating layer and a second insulating layer; the first shielding layer and the second shielding layer are arranged outside the insulating layer, so that the mechanical strength and shielding property of a cable core are enhanced, and the outer layer of the insulating layer can not generate static charges, so that the electric noise is further reduced; the sheath and the insulating layer are extruded by adopting the 150-DEG irradiation crosslinking material, so that the irradiation resistance of the sheath and the insulating layer is improved, long-term noise reduction is realized, and the service life of the low-noise cable is prolonged; through forming the structure of not closing to between making the cable core, further improved low noise cable mechanical strength and the performance of making an uproar of falling to it is long when further prolonging effective the falling of low noise cable and making an uproar, but wide application in cable technical field.

Description

Low-noise cable

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a low noise cable.

Background

Currently, a part of cables employs a highly insulating dielectric as an insulating layer. When the cable is subjected to vibration or bending, the insulating layer and the inner and outer conductors are displaced relative to each other and generate static charges due to mutual friction, and when the static charges are accumulated to a certain amount, electric noise is generated. Because the static charge is generated in proportion to the area of the friction section between the insulating layer and the conductor, and the static charge generated between the outer conductor and the insulating layer is far larger than that generated between the inner conductor and the insulating layer, the traditional noise reduction means generally coats or wraps various noise reduction materials on the surface of the insulating layer.

However, although the cable processed by the conventional noise reduction means has a certain noise resistance, the radiation resistance of the cable itself is poor due to the internal material and structure of the cable. As the service time increases, the noise reducing material inside the cable ages, resulting in a substantial reduction in noise reduction.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a: the low-noise cable is provided to improve the irradiation resistance and noise reduction performance of the cable and prolong the service life.

The utility model adopts the technical proposal that:

a low-noise cable comprises a sheath and a pair of cable cores, wherein the sheath is formed by extruding a 150-degree irradiation crosslinking material, the sheath wraps the cable cores, and an inaccessible structure is formed between the cable cores;

the cable core includes:

the insulating layer comprises a first insulating layer and a second insulating layer, and the first insulating layer and the second insulating layer are formed by extruding a 150-DEG irradiation crosslinking material;

an inner conductor covered by the insulating layer;

the first shielding layer is arranged on one side, far away from the inner conductor, of the insulating layer in a cladding mode;

and the second shielding layer is coated on one side, far away from the insulating layer, of the first shielding layer.

Further, the inner conductor includes a plurality of copper conductors.

Further, the first shielding layer is a wrapping structure formed by a copper-plastic composite belt.

Further, the diameter of the copper-plastic composite belt is 0.05-0.08 mm.

Further, the second shielding layer is a braided layer formed by a plurality of copper wires.

Further, the diameter of the copper wire is 0.05-0.3 mm.

Further, an inner bushing is arranged between the first shielding layer and the second shielding layer, and the inner bushing is formed by extruding a 150-degree irradiation crosslinking material.

Further, the 150-degree radiation crosslinking material is 150-degree radiation crosslinking polyethylene.

Further, the cable core still includes belting layer, the belting layer cladding sets up the second shielding layer is kept away from one side of first shielding layer.

Further, the belting layer is prepared by adopting fiber materials.

The beneficial effects of the utility model are that:

the utility model relates to a low-noise cable, through setting up the double-deck insulating layer including first insulating layer and second insulating layer, make the friction that can lighten insulating layer and inner conductor when the low-noise cable vibrates or bends, reduce the electrical noise; the first shielding layer and the second shielding layer are arranged outside the insulating layer, so that the mechanical strength and shielding property of a cable core are enhanced, and the outer layer of the insulating layer can not generate static charges, so that the electric noise is further reduced; the sheath and the insulating layer are extruded by adopting the 150-DEG irradiation crosslinking material, so that the irradiation resistance of the sheath and the insulating layer is improved, long-term noise reduction is realized, and the service life of the low-noise cable is prolonged; through forming not nearly structure between the messenger cable core, further improved low noise cable mechanical strength and the performance of making an uproar of falling to it is long when further prolonging the effective noise reduction of low noise cable.

Drawings

Fig. 1 is a schematic structural diagram of the low-noise cable of the present invention.

Reference numerals are as follows: 101. a sheath; 102. a first insulating layer; 103. a second insulating layer; 104. an inner conductor; 105. a first shielding layer; 106. a second shielding layer; 107. an inner liner; 108. and (6) wrapping a belt layer.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood not to include the number. If there is a description to first, second, third etc. for the purpose of distinguishing between technical features, it is not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated or to implicitly indicate the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, the low-noise cable comprises a sheath 101 and a pair of cable cores, wherein the sheath 101 is formed by extruding a 150-degree irradiation crosslinking material, the sheath 101 wraps the cable cores, and an inaccessible structure is formed between the cable cores;

the cable core includes:

the insulating layer comprises a first insulating layer 102 and a second insulating layer 103, and the first insulating layer 102 and the second insulating layer 103 are formed by extruding a 150-DEG irradiation crosslinking material;

an inner conductor 104, the inner conductor 104 being coated with the insulating layer;

the first shielding layer 105 is coated and arranged on one side, far away from the inner conductor 104, of the insulating layer;

and the second shielding layer 106 is coated and arranged on one side of the first shielding layer 105 far away from the insulating layer 106.

The utility model relates to a low-noise cable, through setting up the double-deck insulating layer including first insulating layer 102 and second insulating layer 103, make the friction that can lighten insulating layer and inner conductor 104 when the low-noise cable vibrates or bends, reduce the electrical noise; the first shielding layer 105 and the second shielding layer 106 are arranged outside the insulating layer, so that the mechanical strength and the shielding property of a cable core are enhanced, and meanwhile, the outer layer of the insulating layer does not generate static charges, so that the electrical noise is further reduced; the sheath 101 and the insulating layer are extruded by adopting the irradiation cross-linking material with the temperature of 150 ℃, so that the irradiation resistance of the sheath 101 and the insulating layer is improved, long-term noise reduction is realized, and the service life of the low-noise cable is prolonged; through forming not nearly structure between the messenger cable core, further improved low noise cable mechanical strength and the performance of making an uproar of falling to it is long when further prolonging the effective noise reduction of low noise cable.

As an alternative embodiment, the inner conductor 101 includes a plurality of copper conductors.

The inner conductor 101 is used for transmitting electric power.

As an alternative embodiment, the first shielding layer 105 is a wrapping structure formed by a copper-plastic composite tape.

As an alternative embodiment, the diameter of the copper-plastic composite belt is 0.05-0.08 mm.

As an alternative embodiment, the second shielding layer 106 is a braided layer formed by a plurality of copper wires.

As an alternative embodiment, the diameter of the copper wire is 0.05 to 0.3 mm.

As an alternative embodiment, an inner liner 107 is disposed between the first shielding layer 105 and the second shielding layer 106, and the inner liner is extruded by using a 150-degree irradiation cross-linking material.

As an alternative embodiment, the 150 degree radiation cross-linking material is 150 degree radiation cross-linking polyethylene.

As an optional embodiment, the cable core further includes a wrapping layer 108, and the wrapping layer 108 is disposed on a side of the second shielding layer 106 away from the first shielding layer 105 in a wrapping manner.

As an alternative embodiment, the belting layer 108 is made of a fibrous material.

The fiber material is a high-flame-retardant wrapping tape, and the wrapping tape layer 108 is formed by wrapping the high-flame-retardant wrapping tape and is used for flame retardance.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims

1. A low-noise cable is characterized by comprising a sheath and a pair of cable cores, wherein the sheath is formed by extruding a 150-degree irradiation crosslinking material, the sheath wraps the cable cores, and an inaccessible structure is formed between the cable cores;

the cable core includes:

an inner conductor covered by the insulating layer;

and the second shielding layer is arranged on one side of the first shielding layer far away from the insulating layer in a cladding mode.

2. A low noise cable according to claim 1, wherein said inner conductor comprises a plurality of copper conductors.

3. The low-noise cable according to claim 1, wherein the first shielding layer is a wrapping structure formed by a copper-plastic composite tape.

4. A low noise cable according to claim 3, wherein the diameter of the copper-plastic composite tape is 0.05-0.08 mm.

5. A low noise cable according to claim 1, wherein said second shielding layer is a braided layer formed of a plurality of copper wires.

6. A low noise cable according to claim 5, wherein the copper wires have a diameter of 0.05-0.3 mm.

7. The low noise cable according to claim 1, wherein an inner liner is disposed between the first shielding layer and the second shielding layer, and the inner liner is extruded from a 150 ° irradiation cross-linked material.

8. The low noise cable of claim 7, wherein the 150 degree radiation crosslinked material is 150 degree radiation crosslinked polyethylene.

9. A low noise cable according to claim 1, wherein the cable core further comprises a wrapping layer, and the wrapping layer is disposed on a side of the second shielding layer away from the first shielding layer.

10. A low noise cable according to claim 9, wherein said tape layer is made of a fibrous material.