CN212782846U

CN212782846U - Crosslinked polyethylene insulated power cable

Info

Publication number: CN212782846U
Application number: CN202022195204.9U
Authority: CN
Inventors: 杜一泉; 田志; 张松
Original assignee: Henan 168 Cable Co ltd
Current assignee: Henan 168 Cable Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-03-23
Anticipated expiration: 2030-09-29

Abstract

The utility model provides a crosslinked polyethylene insulated power cable, which comprises a copper core conductor; the copper core conductor is cylindrical and is positioned inside the polyethylene insulating layer; the polyethylene insulating layer is cylindrical and is positioned inside the metallized paper shielding layer; the outer wall of the metallized paper shielding layer is attached to the inner wall of the silicon rubber insulating layer; the silicon rubber insulating layer is cylindrical and is positioned inside the polyethylene waterproof layer; the outer wall of the polyethylene waterproof layer is attached to the inner wall of the anti-extrusion layer; the anti-extrusion layer is positioned inside the heat insulation layer; the outer wall of the heat insulation layer is attached to the inner wall of the ultraviolet-proof layer; when the cable is impacted by external force, the anti-extrusion pipe has elasticity to protect the copper core conductor from being damaged, ultraviolet rays are often irradiated on the cable, the aging degree of the cable can be accelerated, and the ultraviolet-proof layer can protect the cable to slow down the aging degree of the cable to a certain degree.

Description

Crosslinked polyethylene insulated power cable

Technical Field

The utility model belongs to the technical field of the cable, more specifically say, in particular to insulating power cable of crosslinked polyethylene.

Background

At present, with the development of scientific technology, the amount of wires and cables is also greatly increased, and the cables used in the market at present usually comprise a conductor, an insulating layer, a shielding layer and an outer sheath.

A cross-linked polyethylene insulated power cable can be referred to: the patent CN107680713A mainly comprises a cable core, wherein the cable core is formed by twisting three flame-retardant cables; a fire extinguishing sand bag for filling the cable core gap is arranged in the cable core; the cable core is externally provided with four layers of different flame retardant belts, and a polyvinyl chloride flame retardant belt, a chloroprene rubber flame retardant belt, a chlorosulfonated polyethylene flame retardant belt and an ethylene propylene rubber flame retardant belt are sequentially arranged from inside to outside; the outer surfaces of the polyvinyl chloride flame-retardant belt, the chloroprene rubber flame-retardant belt, the chlorosulfonated polyethylene flame-retardant belt and the ethylene propylene rubber flame-retardant belt are coated with fireproof resin paint.

The existing power cable is simple in structure, the cable cannot work well under severe environments, and in the long-time use process, the cable is broken, exposed to ultraviolet rays and accelerated to age, is extruded and deformed, and is easy to be corroded by rainwater and overhigh in temperature.

In view of the above, research and improvement are made on the existing structure and defects, and a crosslinked polyethylene insulated power cable is provided to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an insulating power cable of crosslinked polyethylene to it is comparatively simple to solve current structure, and the cable can not be fine normal work under some rugged environment, and in long-time use, the cable breaks off, ultraviolet shines and accelerate ageing, receive extrusion deformation, easily receive rainwater erosion, the too high problem of cable temperature.

The utility model discloses crosslinked polyethylene insulated power cable's purpose and efficiency are reached by following specific technological means:

a crosslinked polyethylene insulated power cable includes a copper core conductor; the copper core conductor is cylindrical and is positioned inside the polyethylene insulating layer; the polyethylene insulating layer is cylindrical and is positioned inside the metallized paper shielding layer; the outer wall of the metallized paper shielding layer is attached to the inner wall of the silicon rubber insulating layer; the silicon rubber insulating layer is cylindrical and is positioned inside the polyethylene waterproof layer; the outer wall of the polyethylene waterproof layer is attached to the inner wall of the anti-extrusion layer; the anti-extrusion layer is positioned inside the heat insulation layer; the outer wall of the heat insulation layer is attached to the inner wall of the ultraviolet-proof layer.

Furthermore, the inner wall of the polyethylene insulating layer is attached to the outer wall of the copper core conductor.

Furthermore, the inner wall of the metallized paper shielding layer is attached to the outer wall of the polyethylene insulating layer.

Furthermore, the inner wall of the rubber insulating layer is attached to the outer wall of the metallized paper shielding layer.

Further, the inner wall of the polyethylene waterproof layer is attached to the outer wall of the silicon rubber insulating layer.

Furthermore, the inner wall of the anti-extrusion layer is attached to the outer wall of the polyethylene waterproof layer, and a plurality of hollow anti-extrusion pipes are arranged in the anti-extrusion layer.

Further, the inner wall of the ultraviolet-proof layer is attached to the outer wall of the heat insulation layer.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the polyethylene insulating layer is favorable for insulation and prolongs the service life of the cable, the polyethylene is crosslinked, a reticular three-dimensional structure is formed by covalent bonds among polyethylene molecules, and the performance of the polyethylene resin is rapidly improved, such as: thermal deformation, wear resistance, chemical resistance, stress cracking resistance and other physical and chemical properties.

2. The arrangement of the metallized paper shielding layer and the silicon rubber insulating layer is favorable for enabling the insulating layer to be in good contact with a cable conductor, the increase of the electric field intensity on the surface of the conductor caused by non-smoothness on the surface of the conductor is eliminated, the silicon rubber insulating layer has excellent insulating property, and accidents such as electric leakage, short circuit and electric shock caused by contact of a conductor with the outside are prevented when workers perform construction inspection.

3. The setting on anti extrusion layer and anti ultraviolet layer is favorable to receiving external force when assaulting when the cable, and anti extrusion pipe has elasticity protection copper core conductor and does not receive the damage, and the ultraviolet ray often shines on the cable, can accelerate the ageing degree of cable, and the anti ultraviolet layer can protect the cable to slow down the cable ageing degree to a certain extent.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

Fig. 2 is a schematic view of the overall axial structure of the present invention.

Fig. 3 is a schematic view of the split structure of the present invention.

Fig. 4 is a front view of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a copper-core conductor; 2. a polyethylene insulating layer; 3. a metallized paper shielding layer; 4. a silicon rubber insulating layer; 5. a polyethylene waterproof layer; 6. an anti-extrusion layer; 601. an anti-extrusion tube; 7. a thermal insulation layer; 8. and an ultraviolet-proof layer.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 4:

the utility model provides a crosslinked polyethylene insulated power cable, which comprises a copper core conductor 1; the copper core conductor 1 is cylindrical, and the copper core conductor 1 is positioned inside the polyethylene insulating layer 2; the polyethylene insulating layer 2 is cylindrical, and the polyethylene insulating layer 2 is positioned inside the metallized paper shielding layer 3; the outer wall of the metallized paper shielding layer 3 is attached to the inner wall of the silicon rubber insulating layer 4; the silicon rubber insulating layer 4 is cylindrical, and the silicon rubber insulating layer 4 is positioned inside the polyethylene waterproof layer 5; the outer wall of the polyethylene waterproof layer 5 is attached to the inner wall of the anti-extrusion layer 6; the anti-extrusion layer 6 is positioned inside the heat insulation layer 7; the outer wall of the heat insulation layer 7 is attached to the inner wall of the ultraviolet-proof layer 8.

Wherein, the inner wall of the polyethylene insulating layer 2 is jointed with the outer wall of the copper core conductor 1; during the use process, polyethylene is crosslinked, and a net-shaped three-dimensional structure is formed through covalent bonds between polyethylene molecules, so that the performance of the polyethylene resin is rapidly improved, such as: thermal deformation, wear resistance, chemical resistance, stress cracking resistance and other physical and chemical properties.

Wherein, the inner wall of the metallized paper shielding layer 3 is jointed with the outer wall of the polyethylene insulating layer 2; in use, in order to make the insulating layer and the cable conductor have better contact, the increase of the electric field intensity on the surface of the conductor caused by the unsmooth surface of the conductor is eliminated.

Wherein, the inner wall of the silicon rubber insulating layer 4 is jointed with the outer wall of the metallized paper shielding layer 3; in the use process, the silicon rubber insulating layer 4 has excellent insulating property, and when workers perform construction and inspection, accidents such as electric leakage, short circuit and electric shock caused by contact of the electric conductor and the outside are prevented.

Wherein, the inner wall of the polyethylene waterproof layer 5 is jointed with the outer wall of the silicon rubber insulating layer 4; in the use process, when the weather condition is not good, the polyethylene waterproof layer 5 can effectively prevent water and moisture, and the structure is ensured not to enter water.

Wherein, the inner wall of the anti-extrusion layer 6 is jointed with the outer wall of the polyethylene waterproof layer 5, and a plurality of hollow anti-extrusion pipes 601 are arranged inside the anti-extrusion layer 6; in use, the anti-extrusion tube 601 has elasticity to protect the copper core conductor 1 from damage when the cable is impacted by external force.

Wherein, the inner wall of the ultraviolet-proof layer 8 is jointed with the outer wall of the heat-insulating layer 7; in the use, ultraviolet ray often shines on the cable, can accelerate the ageing degree of cable, and ultraviolet-proof layer 8 can protect the cable to slow down the cable ageing degree to a certain extent.

The specific use mode and function of the embodiment are as follows:

the utility model discloses when using, polyethylene carries out the cross-linking, forms a netted three-dimensional structure through the covalent bond between the polyethylene molecule, has improved polyethylene resin's performance rapidly, if: a series of physical and chemical properties such as heat deformability, wear resistance, chemical resistance, stress cracking resistance and the like; in order to make the insulating layer and the cable conductor have better contact, the increase of the electric field intensity on the surface of the conductor caused by the non-smoothness on the surface of the conductor is eliminated; the silicon rubber insulating layer 4 has excellent insulating property, and can prevent electric leakage, short circuit, electric shock and other accidents caused by the contact of the electric conductor and the outside when workers carry out construction inspection; when weather conditions are poor, the polyethylene waterproof layer 5 can effectively prevent water and moisture and ensure that the structure does not enter water; when the cable is impacted by external force, the anti-extrusion pipe 601 has elasticity to protect the copper core conductor 1 from being damaged; ultraviolet ray often shines on the cable, can accelerate the ageing degree of cable, and ultraviolet-proof layer 8 can protect the cable to slow down the cable ageing degree to a certain extent.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A crosslinked polyethylene insulated power cable, characterized in that: the crosslinked polyethylene insulated power cable comprises a copper core conductor (1); the copper core conductor (1) is cylindrical, and the copper core conductor (1) is positioned inside the polyethylene insulating layer (2); the polyethylene insulating layer (2) is cylindrical, and the polyethylene insulating layer (2) is positioned inside the metallized paper shielding layer (3); the outer wall of the metallized paper shielding layer (3) is attached to the inner wall of the silicon rubber insulating layer (4); the silicon rubber insulating layer (4) is cylindrical, and the silicon rubber insulating layer (4) is positioned inside the polyethylene waterproof layer (5); the outer wall of the polyethylene waterproof layer (5) is attached to the inner wall of the anti-extrusion layer (6); the anti-extrusion layer (6) is positioned inside the heat insulation layer (7); the outer wall of the heat insulation layer (7) is attached to the inner wall of the ultraviolet-proof layer (8).

2. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the inner wall of the polyethylene insulating layer (2) is attached to the outer wall of the copper core conductor (1).

3. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the inner wall of the metallized paper shielding layer (3) is attached to the outer wall of the polyethylene insulating layer (2).

4. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the inner wall of the silicon rubber insulating layer (4) is attached to the outer wall of the metalized paper shielding layer (3).

5. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the inner wall of the polyethylene waterproof layer (5) is attached to the outer wall of the silicon rubber insulating layer (4).

6. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the inner wall of the anti-extrusion layer (6) is attached to the outer wall of the polyethylene waterproof layer (5), and a plurality of hollow anti-extrusion pipes (601) are arranged inside the anti-extrusion layer (6).

7. The cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the inner wall of the ultraviolet-proof layer (8) is attached to the outer wall of the heat-insulating layer (7).