CN211858180U

CN211858180U - Cross-linked polyethylene insulated cold-resistant power cable

Info

Publication number: CN211858180U
Application number: CN202020377343.0U
Authority: CN
Inventors: 李峰; 肖尚玉; 吴福道
Original assignee: Anhui Yihe Cable Co ltd
Current assignee: Anhui Yihe Cable Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-11-03
Anticipated expiration: 2030-03-23

Abstract

The utility model discloses an insulating cold-resistant power cable of crosslinked polyethylene, including a plurality of conductors and crowded package at the outside insulating layer of conductor, whole insulating layer is arranged and is formed the cylinder, the outside crowded package of insulating layer of arranging formation cylinder has the rubber layer, the insulating layer has the filling layer with rubber layer clearance department packing, the rubber layer outside has the fire-retardant layer of fine buffering of glass, the fire-retardant layer outside of fine buffering of glass is provided with the band layer, the crowded package in outside of band layer has cold-resistant polyvinyl chloride oversheath, a serial communication port, the insulating layer sets up to fan-shaped, and a side of insulating layer is provided with the arch, another side of insulating layer corresponds with bellied size and position and is provided with the recess, compare in prior art, the utility model discloses can use under low temperature environment, and the insulating layer sets up to special.

Description

Cross-linked polyethylene insulated cold-resistant power cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to an insulating cold-resistant power cable of crosslinked polyethylene.

Background

The power cable is an electrical device for transmitting power and distributing electric energy, is an indispensable 'blood vessel' and 'nerve' for social development and resident life, does not generally stipulate the minimum use temperature of the cable in the cable product standard, does not have much stipulation on the aspects of the minimum use temperature, the minimum laying temperature and the construction requirement of the cable in the existing cable design and construction specification, and particularly has less requirement on the use in cold regions. The cable has the advantages that the regions of China are wide, the temperature in winter in western high-cold regions and northern severe-cold regions is low, the time is long, and the problem that the cable is cracked during laying construction and use at low temperature exists for a long time. During construction at temperatures below normal laying temperatures, insulation and sheath cracking, in particular PVC insulation and sheath cables, can easily occur if the cable is subjected to local impact forces, such as collisions, or impacts on the ground.

Therefore, the utility model discloses an insulating cold-resistant power cable of crosslinked polyethylene compares in prior art, the utility model discloses can use under low temperature environment, and the insulating layer sets up to special shape, conveniently carries out the production equipment of cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a cold-resistant power cable of crosslinked polyethylene insulation, solve above-mentioned problem.

The utility model discloses a realize through following technical scheme: including a plurality of conductors and crowded package at the outside insulating layer of conductor, whole insulating layer are arranged and are formed the cylinder, it has the rubber layer to arrange the outside crowded package of insulating layer that forms the cylinder, insulating layer and rubber layer clearance department fill has the filling layer, the rubber layer outside has the fire-retardant layer of fine fibre buffering around the package, the fire-retardant layer outside of fine fibre buffering is provided with the band layer, the crowded package in outside of band layer has cold-resistant polyvinyl chloride oversheath, a serial communication port, the insulating layer sets up to fan-shaped, and a side of insulating layer is provided with the arch, another side of insulating layer corresponds with bellied size and position.

The filling layer is made of one or more substances of polyvinyl chloride and flame-retardant glass fiber.

Preferably, the protrusion is a first protrusion, the first protrusion is arranged in a zigzag shape, the groove is a first groove, and the first groove is arranged in a zigzag shape.

Preferably, the protrusion is a second protrusion, the end face of the second protrusion is arc-shaped, the groove is a second groove, and the second groove is an arc-shaped groove.

Preferably, the material of the insulating layer is cross-linked polyethylene.

The utility model discloses an insulating cold-resistant power cable of crosslinked polyethylene compares with prior art:

the utility model discloses can use under low temperature environment, the filling layer of its setting can play fine effect of keeping out the cold, and the insulating layer sets up to special shape, conveniently carries out the production equipment of cable, and the insulating layer sets up to fan-shaped, and a side of insulating layer is provided with the arch, and another side of insulating layer corresponds with bellied size and position and is provided with the recess.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the structure of an insulating layer in example 1;

fig. 4 is a schematic structural view of an insulating layer in embodiment 2.

In the figure: 1. a cold-resistant polyvinyl chloride outer sheath; 2. a belting layer; 3. a fiberglass buffer flame-retardant layer; 4. a rubber layer; 5. an insulating layer; 51. a first bump; 52. a first groove; 53. a second bump; 54. a second groove; 6. a conductor; 7. and (5) filling the layer.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 and fig. 2, the utility model discloses a cross-linked polyethylene insulated cold-resistant power cable, which comprises a plurality of conductors 6 and an insulating layer 5 extruded outside the conductors 6, all the insulating layer 5 is arranged to form a cylinder, the insulating layer 5 arranged to form a cylinder is extruded outside with a rubber layer 4, a gap between the insulating layer 5 and the rubber layer 4 is filled with a filling layer 7, the rubber layer 4 is wrapped outside with a glass fiber buffer flame-retardant layer 3, the glass fiber buffer flame-retardant layer 3 is provided outside with a band layer 2, the band layer 2 is extruded outside with a cold-resistant polyvinyl chloride outer sheath 1, the insulating layer 5 is arranged in a fan shape, one side of the insulating layer 5 is provided with a protrusion, the other side of the insulating layer 5 is provided with a groove corresponding to the size and position of the protrusion, the filling layer 7 is made of one or more substances of polyvinyl chloride and flame-retardant glass, the insulating layer 5 is made of cross-linked polyethylene.

The utility model discloses can use under low temperature environment, and the insulating layer sets up to special shape, conveniently carries out the production equipment of cable, insulating layer 5 sets up to fan-shaped, just 5 sides of insulating layer are provided with the arch, 5 another sides of insulating layer with bellied size and position correspond and are provided with the recess.

The utility model provides two concrete embodiments.

Example 1

The utility model discloses a cross-linked polyethylene insulated cold-resistant power cable, which comprises a plurality of conductors 6 and an insulating layer 5 extruded outside the conductors 6, wherein all the insulating layer 5 is arranged to form a cylinder, the insulating layer 5 which is arranged to form the cylinder is extruded with a rubber layer 4, a gap between the insulating layer 5 and the rubber layer 4 is filled with a filling layer 7, a glass fiber buffer flame-retardant layer 3 is wound outside the rubber layer 4, a belting layer 2 is arranged outside the glass fiber buffer flame-retardant layer 3, the outer part of the belting layer 2 is extruded with a cold-resistant polyvinyl chloride outer sheath 1, the insulating layer 5 is arranged in a fan shape, one side edge of the insulating layer 5 is provided with a bulge, the other side edge of the insulating layer 5 is provided with a groove corresponding to the size and the position of the bulge, the filling layer 7 is made of one or more substances of polyvinyl chloride, the insulating layer 5 is made of cross-linked polyethylene, as shown in fig. 3, the protrusion is a first bump 51, the first bump 51 is saw-toothed, the groove is a first groove 52, and the first groove 52 is saw-toothed.

Example 2

The utility model discloses a cross-linked polyethylene insulated cold-resistant power cable, which comprises a plurality of conductors 6 and an insulating layer 5 extruded outside the conductors 6, wherein all the insulating layer 5 is arranged to form a cylinder, the insulating layer 5 which is arranged to form the cylinder is extruded with a rubber layer 4, a gap between the insulating layer 5 and the rubber layer 4 is filled with a filling layer 7, a glass fiber buffer flame-retardant layer 3 is wound outside the rubber layer 4, a belting layer 2 is arranged outside the glass fiber buffer flame-retardant layer 3, the outer part of the belting layer 2 is extruded with a cold-resistant polyvinyl chloride outer sheath 1, the insulating layer 5 is arranged in a fan shape, one side edge of the insulating layer 5 is provided with a bulge, the other side edge of the insulating layer 5 is provided with a groove corresponding to the size and the position of the bulge, the filling layer 7 is made of one or more substances of polyvinyl chloride, the insulating layer 5 is made of cross-linked polyethylene, as shown in fig. 4, the protrusion is a second protrusion 53, the end surface of the second protrusion 53 is arc-shaped, the groove is a second groove 54, and the second groove 54 is an arc-shaped groove.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The cross-linked polyethylene insulated cold-resistant power cable comprises a plurality of conductors (6) and insulating layers (5) extruded outside the conductors (6), wherein all the insulating layers (5) are arranged to form a cylinder, a rubber layer (4) is extruded outside the insulating layers (5) arranged to form the cylinder, a filling layer (7) is filled in the gap between the insulating layer (5) and the rubber layer (4), a glass fiber buffer flame-retardant layer (3) is wound outside the rubber layer (4), a belting layer (2) is arranged outside the glass fiber buffer flame-retardant layer (3), the outer part of the belting layer (2) is extruded and wrapped with a cold-resistant polyvinyl chloride outer sheath (1), the insulation layer (5) is fan-shaped, a protrusion is arranged on one side edge of the insulation layer (5), and a groove is formed in the other side edge of the insulation layer (5) corresponding to the size and the position of the protrusion.

2. The cross-linked polyethylene insulated cold-resistant power cable as claimed in claim 1, wherein the filling layer (7) is made of one or more of polyvinyl chloride and flame-retardant glass fiber.

3. The cross-linked polyethylene insulated cold-resistant power cable according to claim 1, wherein the protrusion is a first protrusion (51), the first protrusion (51) is arranged in a zigzag shape, the groove is a first groove (52), and the first groove (52) is arranged in a zigzag shape.

4. The cross-linked polyethylene insulated cold-resistant power cable as claimed in claim 1, wherein the protrusion is a second protrusion (53), the end surface of the second protrusion (53) is arc-shaped, the groove is a second groove (54), and the second groove (54) is arc-shaped.

5. The cross-linked polyethylene insulated cold-resistant power cable as claimed in claim 1, wherein the material of the insulating layer (5) is cross-linked polyethylene.