CN219591152U

CN219591152U - Low-resistivity high-strength voltage power cable

Info

Publication number: CN219591152U
Application number: CN202320479953.5U
Authority: CN
Inventors: 叶伟; 杨昌金; 郑雷
Original assignee: Lishui Feizhou Cable Co ltd
Current assignee: Lishui Feizhou Cable Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-25
Anticipated expiration: 2033-03-14

Abstract

The utility model provides a low-resistivity high-strength voltage power cable, which comprises a high-voltage cable conductor, a conductor insulation outer cover, protective filling, an inner tensile sheath and an outer sheath, wherein: the conductor insulation outer cover wraps the outer side of the high-voltage cable conductor, the protection filling is nested on the outer side of the conductor insulation outer cover, and the inner tensile sheath is fixedly bonded on the outer surface of the protection filling; the outer jacket wraps around the outside of the inner tensile jacket. The utility model has the advantages that the bending capacity and the strength can be improved simultaneously, the external pressure resistance is high, and the traction resistance is high due to the arrangement of the protective filling and the internal tensile sheath.

Description

Low-resistivity high-strength voltage power cable

Technical Field

The utility model relates to the technical field of power cables, in particular to a low-resistivity high-strength voltage power cable.

Background

The power cable is a cable for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station outgoing lines, power supply in industrial and mining enterprises and power transmission lines under sea water passing through the river. However, the existing power cable still has the problems that the bending capability and the strength can not be improved at the same time, the capability of resisting external pressure is poor, and the capability of resisting traction is poor.

Therefore, it is necessary to develop a low-resistivity high-strength voltage power cable.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a low-resistivity high-strength voltage power cable, which solves the problems that the bending capacity and strength of the existing power cable can not be improved at the same time, the external pressure resistance is poor, and the traction resistance is poor. The utility model provides a low resistivity high strength voltage power cable, includes high voltage cable conductor, conductor insulation outsourcing, protection fills, inside tensile sheath, outer sheath, wherein: the conductor insulation outer cover wraps the outer side of the high-voltage cable conductor, the protection filling is nested on the outer side of the conductor insulation outer cover, and the inner tensile sheath is fixedly bonded on the outer surface of the protection filling; the outer jacket wraps around the outside of the inner tensile jacket.

The protection filling comprises protection unit sections, a yielding space, a filling structure and an internal reinforcing armor, wherein the protection unit sections are nested at the outer side of the conductor insulation outer wrapping, a space is reserved between the protection unit sections to form the yielding space, and the filling structure is filled in the yielding space; the inner reinforcing armor is wrapped on the outer side of the protection unit section.

The protection filling adopts a plurality of sections, the protection unit sections adopt a plurality of sections of hard rubber sections, the deformation capacity of the protection unit sections is weak, and the external surface of the protection unit sections is completely wrapped by the internal reinforcing armor; the length of the protection unit section is 20 cm to 25 cm, the protection unit section can be completely in a certain range through the yielding space and the connection of the high-voltage cable conductor and the conductor insulation package, the filling structure adopts glass fiber, the yielding space is filled, a protection body is formed on the outer sides of the high-voltage cable conductor and the conductor insulation package, the protection filling has higher strength, the damage of the external inward pressure to the high-voltage cable conductor and the conductor insulation package can be prevented, and the high-voltage cable conductor and the conductor insulation package can be protected, and meanwhile, the protection structure has the capability of being bendable; when the high-voltage cable conductor and the conductor insulation outer package need to be in butt joint with external wires, a plurality of groups of protection filling can be detached, so that the high-voltage cable conductor and the conductor insulation outer package are exposed outside, and the wires can be conveniently in butt joint.

The inner tensile sheath adopts 4 groups of circular arc soft rubber sheets, a gap of 0.5 cm is reserved between the inner tensile sheaths, and the inner tensile sheaths are used for integrating protection filling; the inner tensile jacket deforms after being stressed; the inside of the inner tensile sheath is filled with a plurality of mutually parallel steel wire ropes for connecting the separated protective filling, and the inner tensile sheath can be bent to deform in cooperation with the bending of the utility model, so that the novel high-voltage cable can be bent, when the inner tensile sheath is bent, the inner tensile sheath of the inner ring is inwards sunken to bend the high-voltage cable conductor and the conductor insulation outer cover inside the protective filling, and the inner tensile sheath of the outer ring is only bent and cannot be pulled; the utility model can bear the transverse traction with larger strength.

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

1. the protective filling is used for forming a protective body on the outer sides of the high-voltage cable conductor and the conductor insulating outer cover, has higher strength, can prevent the high-voltage cable conductor and the conductor insulating outer cover from being damaged by the inward external pressure, and can enable the high-voltage cable conductor and the conductor insulating outer cover to have the capability of being bent while protecting the high-voltage cable conductor and the conductor insulating outer cover; when the high-voltage cable conductor and the conductor insulation outer package need to be in butt joint with external wires, a plurality of groups of protection filling can be detached, so that the high-voltage cable conductor and the conductor insulation outer package are exposed outside, and the wires can be conveniently in butt joint.

2. The inner tensile sheath is used for connecting the separated protective filling and can be matched with the bending device to deform, so that the novel bending device can bend, when the novel bending device is bent, the inner tensile sheath of the inner ring is inwards sunken to bend the high-voltage cable conductor and the conductor insulation outer cover inside the protective filling, and the inner tensile sheath of the outer ring is only bent and cannot be pulled, so that the novel bending device can bear transverse pulling with larger strength.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an enlarged view at a of the present utility model.

In the figure:

the high-voltage cable conductor 1, conductor insulation outsourcing 2, protection packing 3, protection unit section 31, space 32 of stepping down, filling structure 33, inside reinforcing armor 34, inside tensile sheath 4 and outer sheath 5.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution of the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

As shown in fig. 1 to 2.

The utility model provides a low-resistivity high-strength voltage power cable, which comprises a high-voltage cable conductor 1, a conductor insulation outer cover 2, a protective filling 3, an inner tensile sheath 4 and an outer sheath 5, wherein: the conductor insulation outer cover 2 is wrapped on the outer side of the high-voltage cable conductor 1, the protective filling 3 is nested on the outer side of the conductor insulation outer cover 2, and the inner tensile sheath 4 is fixedly adhered to the outer surface of the protective filling 3; the outer sheath 5 is wrapped around the outside of the inner tensile sheath 4.

The protection filling 3 comprises protection unit sections 31, a yielding space 32, a filling structure 33 and an internal reinforcing armor 34, wherein the protection unit sections 31 are nested outside the conductor insulation outer cover 2, a space is reserved between the protection unit sections 31 to form the yielding space 32, and the filling structure 33 is filled in the yielding space 32; the inner reinforcing armor 34 is wrapped around the outer sides of the protective unit segments 31.

The low-resistivity high-strength voltage power cable provided by the utility model has the advantages that the high-voltage cable conductor 1 and the conductor insulation outer cover 2 are of main conductive structures, the high-voltage cable conductor 1 adopts a plurality of strands, the gap is smaller, the area of the cross section of the cable is increased, and the resistivity of the cable is reduced; the protection filling 3 adopts a plurality of sections, the protection unit sections 31 adopt a plurality of sections of hard rubber sections, the deformation capability of the protection unit sections 31 is weak, and the inner reinforcing armor 34 completely wraps the outer surface of the protection unit sections 31; the length of the protection unit section 31 is 20 cm to 25 cm, the protection unit section 31 can completely fill the abdication space 32 in a certain range through the connection of the abdication space 32 and the high-voltage cable conductor 1 and the conductor insulation outer cover 2, the filling structure 33 adopts glass fiber, the abdication space 32 is used for forming a protection body on the outer sides of the high-voltage cable conductor 1 and the conductor insulation outer cover 2, the protection filling 3 has higher strength, the damage to the high-voltage cable conductor 1 and the conductor insulation outer cover 2 caused by the inward external pressure can be prevented, and the protection structure can enable the protection structure to have the capability of bending while protecting the high-voltage cable conductor 1 and the conductor insulation outer cover 2; when the high-voltage cable conductor 1 and the conductor insulation outer cover 2 need to be in butt joint with an external lead, a plurality of groups of protection filling 3 can be disassembled, so that the high-voltage cable conductor 1 and the conductor insulation outer cover 2 are exposed outside, and the lead is conveniently in butt joint; the inner tensile sheath 4 adopts 4 groups of circular arc soft rubber sheets, a gap of 0.5 cm is reserved between the inner tensile sheaths 4, and the inner tensile sheaths 4 connect the protective filling 3 into a whole; the inner tensile sheath 4 deforms after being stressed; the inside of the inner tensile sheath 4 is filled with a plurality of mutually parallel steel wire ropes for connecting the separated protective filling 3, and the inner tensile sheath 4 can be bent to deform in cooperation with the bending of the utility model, so that the novel inner tensile sheath 4 of the inner ring can be bent, the high-voltage cable conductor 1 and the conductor insulation outer cover 2 inside the protective filling 3 are bent in bending, and the inner tensile sheath 4 of the outer ring is only bent and cannot be pulled; the utility model can bear the transverse traction with larger strength; the outer sheath 5 is used to form a protective structure on the outermost layer to prevent sharp objects from damaging the present utility model.

By utilizing the technical scheme of the utility model or under the inspired by the technical scheme of the utility model, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical scheme falls into the protection scope of the utility model.

Claims

1. A low resistivity high strength voltage power cable, characterized by: including high tension cable conductor (1), conductor insulation outsourcing (2), protection is filled (3), inside tensile sheath (4), outer sheath (5), wherein: the conductor insulation outer cover (2) is wrapped on the outer side of the high-voltage cable conductor (1), the protection filling (3) is nested on the outer side of the conductor insulation outer cover (2), and the inner tensile sheath (4) is fixedly adhered to the outer surface of the protection filling (3); the outer sheath (5) wraps the outer side of the inner tensile sheath (4).

2. A low resistivity, high strength voltage power cable as claimed in claim 1, wherein: the protection filling (3) comprises protection unit sections (31), a yielding space (32), a filling structure (33) and an internal reinforcing armor (34), wherein the protection unit sections (31) are nested outside the conductor insulation outer wrapping (2), a space is reserved between the protection unit sections (31) to form the yielding space (32), and the filling structure (33) is filled in the yielding space (32); the inner reinforcing armor (34) is wrapped on the outer side of the protection unit section (31).

3. A low resistivity, high strength voltage power cable as claimed in claim 2, wherein: the protection filling (3) adopts a plurality of sections, the protection unit sections (31) adopt a plurality of sections of hard rubber sections, the deformation capacity of the protection unit sections (31) is weak, and the inner reinforcing armor (34) completely wraps the outer surface of the protection unit sections (31); the length of the protection unit section (31) is 20 cm to 25 cm, the protection unit section (31) can completely fill a certain range through the connection of the abdication space (32) and the high-voltage cable conductor (1) and the conductor insulation outer cover (2), and the filling structure (33) adopts glass fiber to fill the abdication space (32).

4. A low resistivity, high strength voltage power cable as claimed in claim 1, wherein: the inner tensile jackets (4) are made of 4 groups of circular arc soft rubber sheets, a gap of 0.5 cm is reserved between the inner tensile jackets (4), and the inner tensile jackets (4) are used for connecting the protective filling (3) into a whole; the inner tensile sheath (4) deforms after being stressed; the inside of the inner tensile sheath (4) is filled with a plurality of mutually parallel steel wire ropes.