CN109754908B

CN109754908B - Power cable

Info

Publication number: CN109754908B
Application number: CN201910041015.5A
Authority: CN
Inventors: 陈颖雪; 林亮臻; 宋运龙; 黄颖婕; 周孝天; 汪元; 陈云玲
Original assignee: Fujian Nanxin Cable Co ltd
Current assignee: Fujian Nanxin Cable Co ltd
Priority date: 2019-01-16
Filing date: 2019-01-16
Publication date: 2020-04-17
Anticipated expiration: 2039-01-16
Also published as: CN109754908A

Abstract

The invention discloses a power cable which comprises a conductor, wherein an insulating sleeve is sleeved on the outer wall of the conductor, magnesium oxide powder is filled in the insulating sleeve and the inner side of the conductor, a silica gel sleeve is sleeved on the outer wall of the insulating sleeve, a bottom groove is sleeved at the bottom of the outer wall of the silica gel sleeve, a top groove is sleeved on the outer wall of the top of the silica gel sleeve, the top groove is in interference connection with the silica gel sleeve, second pull rods are fixedly connected to the bottoms of the left side and the right side of the front face of the top groove, second connecting blocks are fixedly connected to the bottoms of the left end and the right end of the top groove, side blocks are fixedly connected to the outer side ends of the second connecting blocks, a threaded rod is fixedly connected to the center of the bottom end of each side block, the outer wall of the bottom of the threaded rod penetrates through a sleeve block, the sleeve block. This power cable, when needs carry out the during operation, through the cooperation of top groove and kerve, can protect power cable through the device, avoids producing the damage when placing.

Description

Power cable

Technical Field

The invention relates to the technical field of cables, in particular to a power cable.

Background

The power cable is used for transmitting and distributing electric energy, the power cable is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater, in the power line, the proportion of the cable is gradually increased, the power cable is a cable product used for transmitting and distributing high-power electric energy in a main line of a power system and comprises various voltage grades of 1-500KV and above and various insulated power cables, in the prior art, as the invention patent with the application number of 201721783625.5, the power cable comprises a sheath layer, an armor layer, an inner liner layer, a belting layer, a shielding layer, a packing layer, a cable body and an outer packing layer, the armor layer is positioned in the sheath layer, the inner liner layer is positioned in the armor layer, the belting layer is positioned in the inner liner layer, the outer packing layer is positioned in the belting layer, the packing layer is, the cable body is positioned in the filler layer and comprises a first protective layer, a second protective layer, an insulating layer, a conductor shielding layer and a conductor, wherein the first protective layer is positioned in the filler layer, the second protective layer is positioned in the first protective layer, the insulating layer is positioned in the second protective layer, the conductor shielding layer is positioned in the insulating layer, and the conductor is positioned in the conductor shielding layer; the outer packing layer is provided with copper bars; the sheath layer adopts a spiral texture structure; the conductor is an aluminum alloy wire, and although tensile strength can be improved, the conductor is easy to damage when placed in a pipeline and inconvenient to replace if damaged.

Disclosure of Invention

The present invention is directed to a power cable to solve the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a power cable comprises a conductor, wherein an insulating sleeve is sleeved on the outer wall of the conductor, magnesium oxide powder is filled in the insulating sleeve and the inner side of the conductor, a silica gel sleeve is sleeved on the outer wall of the insulating sleeve, a bottom groove is sleeved at the bottom of the outer wall of the silica gel sleeve, the bottom groove is in interference connection with the silica gel sleeve, first pull rods are fixedly connected to the tops of the left side and the right side of the front of the bottom groove, first connecting blocks are fixedly connected to the tops of the left side and the right side of the front of the bottom groove, sleeve blocks are fixedly connected to the outer side ends of the first connecting blocks, a top groove is sleeved on the outer wall of the top of the silica gel sleeve, the top groove is in interference connection with the silica gel sleeve, second pull rods are fixedly connected to the bottoms of the left side and the right side of the front of the top groove, second connecting blocks are fixedly connected to the bottoms of the left side and the right side of the top groove, side blocks are fixedly connected to the outer side ends of the, the sleeve block is in clearance connection with the threaded rod, and the bottom of the outer wall of the threaded rod is in threaded connection with the threaded sleeve.

Preferably, the outer plates are fixedly connected to the centers of the outer ends of the bottom groove and the top groove, the grooves are fixedly connected to the outer ends of the outer plates, the balls are sleeved on the inner walls of the grooves, and the balls are in clearance connection with the grooves.

Preferably, the left side and the right side of the top end of the bottom groove are fixedly connected with the support blocks.

Preferably, a gasket is fixedly connected to the top end of the supporting block.

Preferably, a projection is fixedly connected to the center of the end part of the inner side of the outer wall of the threaded sleeve.

Compared with the prior art, the invention has the beneficial effects that: the power cable comprises a conductor and an insulating sleeve, wherein the conductor and the insulating sleeve form the power cable through the matching of a top groove and a bottom groove when the power cable needs to work, the power cable is a cable product used for transmitting and distributing high-power electric energy in a trunk line of a power system, the insulating sleeve is made of rubber, the rubber is a high-elasticity polymer material with reversible deformation, the rubber has an insulating characteristic, magnesium oxide powder has fire resistance, the continuous working temperature of the mineral cable is 250 ℃, the power can be continuously supplied for 3 hours at 950-1000 ℃, the material of the silica gel sleeve is silica gel, the friction force can be increased through the silica gel, the silica gel sleeve can be conveniently attached to the top groove and the bottom groove, a threaded rod penetrates through a sleeve block to be in threaded connection with the threaded sleeve, the power cable can be protected through the device, and damage caused when the power cable is placed is avoided.

Drawings

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

FIG. 2 is a schematic view of the connection of a threaded rod and sleeve block and threaded sleeve;

FIG. 3 is a schematic view showing a connection structure of the silicone sleeve and the top and bottom grooves.

In the figure: 1. a conductor; 2. magnesium oxide powder; 3. an insulating sleeve; 4. a silica gel sleeve; 5. a bottom groove; 6. a first pull rod; 7. a first joint block; 8. sleeving blocks; 9. a top groove; 10. a second block; 11. a second pull rod; 12. a side block; 13. a threaded rod; 14. a threaded sleeve; 15. an outer plate; 16. a groove; 17. a ball bearing; 18. supporting a block; 19. a gasket; 20. and (4) a bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a power cable comprises a conductor 1, an insulating sleeve 3 is sleeved on the outer wall of the conductor 1, the insulating sleeve 3 is used for wrapping the conductor 1, the conductor 1 and the insulating sleeve 3 are power cables, the power cable is a cable product used for transmitting and distributing high-power electric energy in a trunk line of a power system and comprises various voltage grades of 1-500KV and above, various insulated power cables are arranged, magnesium oxide powder 2 is filled inside the insulating sleeve 3 and the conductor 1, the magnesium oxide powder 2 has fire resistance, the continuous working temperature of the mineral cable is 250 ℃, power can be continuously supplied for 3 hours at 950-1000 ℃, a silica gel sleeve 4 is sleeved on the outer wall of the insulating sleeve 3, the insulating sleeve 3 is made of rubber, the rubber is a high-elasticity polymer material with reversible deformation at room temperature, can generate large deformation under the action of small external force, and can recover to the original shape after the external force is removed, meanwhile, the rubber has the insulating property, the bottom groove 5 is sleeved at the bottom of the outer wall of the silica gel sleeve 4, the bottom groove 5 is in interference connection with the silica gel sleeve 4, the silica gel sleeve 4 is sleeved on the insulating sleeve 3, the silica gel sleeve 4 is made of silica gel, the friction force can be increased through the silica gel, the silica gel sleeve 4 can be conveniently attached to the top groove 9 and the bottom groove 5, the left side and the right side of the top end of the bottom groove 5 are fixedly connected with the supporting blocks 18, the supporting blocks 18 can support when the top groove 9 is attached to the bottom groove 5, the top end of the supporting block 18 is fixedly connected with the gasket 19, the gasket 19 is made of rubber, the abrasion can be reduced when the supporting blocks 18 are attached to the top groove 9, the first pull rods 6 are fixedly connected to the tops of the left side and the right side of the front face of the bottom groove 5, the first pull rods 6 are convenient to pull the bottom groove 5, the first connecting blocks 7 are used for fixing the sleeve blocks 8 in the bottom groove 5, the tops of the left side and the right side of the, the top groove 9 is sleeved on the outer wall of the top of the silica gel sleeve 4, the top groove 9 is in interference connection with the silica gel sleeve 4, the second pull rods 11 are fixedly connected to the bottoms of the left and right sides of the front face of the top groove 9, the top groove 9 is attached to the silica gel sleeve 4, the second pull rods 11 are convenient to pull the top groove 9, second connecting blocks 10 are fixedly connected to the bottoms of the left and right ends of the top groove 9, the second connecting blocks 10 are used for fixing side blocks 12 on the top groove 9, the side blocks 12 are used for fixing threaded rods 13, the outer side ends of the second connecting blocks 10 are fixedly connected with side blocks 12, threaded rods 13 are fixedly connected to the centers of the bottoms of the side blocks 12, the outer wall of the bottom of each threaded rod 13 penetrates through the sleeve block 8, the sleeve block 8 is in clearance connection with the threaded rod 13, the threaded rods 13 penetrate through the sleeve blocks 8 to be in threaded connection with the threaded sleeves 14, the threaded connection is detachable fixed connection, Connect reliably, install and remove advantages such as convenience, the outer wall medial extremity center department rigid coupling of thread bush 14 has lug 20, lug 20 can be more convenient when rotating thread bush 14, increase lifting surface area, the equal rigid coupling in the outside terminal center department of kerve 5 and top groove 9 has planking 15, the equal rigid coupling in outside terminal of planking 15 has recess 16, ball 17 has been cup jointed to the inner wall of recess 16, ball 17 can rotate inside recess 16, ball 17 and recess 16 gap junction, more steady when ball 17 can place in the pipeline slides, can reduce the damage.

The insulation sleeve 3 is used for wrapping the conductor 1, the conductor 1 and the insulation sleeve 3 form a power cable, the power cable is a cable product used for transmitting and distributing high-power electric energy in a trunk line of a power system and comprises various voltage grades of 1-500KV and above, various insulated power cables are made of rubber, the insulation sleeve 3 is made of high-elasticity polymer material with reversible deformation, the rubber is rich in elasticity at room temperature, can generate large deformation under the action of small external force and can recover to an original shape after the external force is removed, meanwhile, the rubber has the insulating characteristic, the magnesium oxide powder 2 has fire resistance, the continuous working temperature of the mineral cable is 250 ℃, the power can be continuously supplied for 3 hours at 950-1000 ℃, the silica gel sleeve 4 is sleeved on the insulation sleeve 3, the silica gel sleeve 4 is made of silica gel, the friction force can be increased through the silica gel, and the silica gel sleeve 4 is convenient to be attached to the top groove 9 and the bottom groove, first pull rod 6 conveniently stimulates kerve 5, first piecing 7 is used for fixing nested piece 8 at kerve 5, top groove 9 laminates with silica gel cover 4, second pull rod 11 conveniently stimulates top groove 9, second piecing 10 is used for fixing side piece 12 at top groove 9, side piece 12 is used for fixed threaded rod 13, threaded rod 13 runs through nested piece 8 and carries out threaded connection with thread bush 14, threaded connection is a widely used detachable fixed connection, have simple structure, connect reliably, install and remove advantages such as convenience.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electric power cable comprising a conductor (1), characterized in that: the outer wall of the conductor (1) is sleeved with an insulating sleeve (3), the insulating sleeve (3) and the inner side of the conductor (1) are filled with magnesium oxide powder (2), the outer wall of the insulating sleeve (3) is sleeved with a silica gel sleeve (4), the bottom of the outer wall of the silica gel sleeve (4) is sleeved with a bottom groove (5), the bottom groove (5) is in interference connection with the silica gel sleeve (4), the tops of the left side and the right side of the front of the bottom groove (5) are fixedly connected with first pull rods (6), the tops of the left end and the right end of the bottom groove (5) are fixedly connected with first connecting blocks (7), the outer end of each first connecting block (7) is fixedly connected with a sleeve block (8), the outer wall of the top of the silica gel sleeve (4) is sleeved with a top groove (9), the top groove (9) is in interference connection with the silica gel sleeve (4), the bottoms of the left side and the right side of the front of the top groove (9) are, the equal rigid coupling in both ends bottom has second joint block (10) about top groove (9), the outside end rigid coupling of second joint block (10) has side piece (12), the bottom center department rigid coupling threaded rod (13) of side piece (12), the bottom outer wall of threaded rod (13) runs through cover block (8), cover block (8) and threaded rod (13) clearance joint, the outer wall bottom threaded connection of threaded rod (13) has thread bush (14).

2. A power cable according to claim 1, characterized in that: the outer side end center department of kerve (5) and top groove (9) all is rigid connected with planking (15), the outer side end rigid connected of planking (15) is fluted (16), ball (17) have been cup jointed to the inner wall of recess (16), ball (17) and recess (16) gap junction.

3. A power cable according to claim 1, characterized in that: and the left side and the right side of the top end of the bottom groove (5) are fixedly connected with a support block (18).

4. A power cable according to claim 3, characterized in that: the top end of the supporting block (18) is fixedly connected with a gasket (19).

5. A power cable according to claim 1, characterized in that: and a lug (20) is fixedly connected to the center of the end part of the inner side of the outer wall of the threaded sleeve (14).