CN212257015U

CN212257015U - Rated voltage crosslinked polyethylene insulated power cable

Info

Publication number: CN212257015U
Application number: CN202020930313.8U
Authority: CN
Inventors: 王亚杰
Original assignee: Hebei Xingzhou Cable Co ltd
Current assignee: Hebei Xingzhou Cable Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2020-12-29
Anticipated expiration: 2030-05-21

Abstract

The utility model relates to the technical field of cables, specifically be a rated voltage crosslinked polyethylene insulated power cable, the sinle silk includes annealing copper core, rubber layer, crosslinked polyethylene insulating layer and second crosslinked polyethylene protective sheath, the inboard of crosslinked polyethylene insulating layer is provided with annealing copper core, the rubber layer has been cup jointed to the surface of crosslinked polyethylene insulating layer, the second crosslinked polyethylene protective sheath has been cup jointed to the outside on rubber layer, and is adjacent be provided with the center post between the sinle silk, the outside of second crosslinked polyethylene protective sheath is equipped with the buffering area, the band shielding layer has been cup jointed in the outside of buffering area, first cable includes fire-retardant layer and first crosslinked polyethylene protective sheath, the outside of band shielding layer is equipped with fire-retardant layer. When two cables are connected, the operation is simple, the use of a matched threaded sleeve for connection is avoided, certain time is saved, and the stability between the connected cables is high and the service life is long.

Description

Rated voltage crosslinked polyethylene insulated power cable

Technical Field

The utility model relates to the technical field of cables, specifically a rated voltage crosslinked polyethylene insulated power cable.

Background

Under the economic development of China, the cross-linked polyethylene insulated power cable provides a huge prospect for the industry of cables, is suitable for fixedly laying in a power distribution network or an industrial device with the power frequency rated voltage of 0.6/1kv or below, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater.

The cables are often pulled in the laying process, so a certain supporting force and a certain tensile force are needed, and the two cables are often connected by using matched thread sleeves during connection, so that the connection is troublesome, the connection time is long, and the use of workers is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a rated voltage crosslinked polyethylene insulated power cable is reached by following specific technological means:

a rated voltage crosslinked polyethylene insulated power cable comprises a first cable, a wire core and a second cable, wherein the wire core comprises an annealed copper core, a rubber layer, a crosslinked polyethylene insulating layer and a second crosslinked polyethylene protective sleeve, the annealed copper core is arranged on the inner side of the crosslinked polyethylene insulating layer, the rubber layer is sleeved on the outer surface of the crosslinked polyethylene insulating layer, the second crosslinked polyethylene protective sleeve is sleeved on the outer portion of the rubber layer, a central column is arranged between every two adjacent wire cores, a buffer belt is arranged on the outer side of the second crosslinked polyethylene protective sleeve, a belt shielding layer is sleeved on the outer side of the buffer belt, the first cable comprises a flame retardant layer and a first crosslinked polyethylene protective sleeve, the flame retardant layer is arranged on the outer side of the belt shielding layer, the first crosslinked polyethylene protective sleeve is sleeved on the outer surface of the flame retardant layer, and a first connecting pipe is arranged on the outer surface of the first cable, the utility model discloses a cable connecting device, including first connecting pipe, second connecting pipe, sealed insulating pad, spacing groove, mounting groove, magnetic iron, the upper and lower fixed surface of first connecting pipe installs the stopper, the surface of second cable is provided with the second connecting pipe, the second connecting pipe includes compression spring, sealed insulating pad, spacing groove, mounting groove and magnetic iron, the equal fixedly connected with sealed insulating pad of two upper and lower inner walls of second connecting pipe, the inner wall fixedly connected with compression spring of second connecting pipe, the front end fixed mounting of compression spring has magnetic iron, the mounting groove has been seted up to the inside of second connecting pipe, the spacing groove has just been seted up in the mounting.

And as optimization, the adjacent annealed copper cores are in stranded distribution, the glass fiber belts are filled in the rubber layers, and the rubber layers have a certain protection effect.

Preferably, the cavity between the buffer strip and the wire core is filled with polyolefin, and the polyolefin can protect the wire core.

As optimization, the width of the limiting block is matched with that of the limiting groove, and the width of the limiting block is smaller than that of the mounting groove, so that the limiting block can be conveniently clamped in.

As optimization, the iron block is installed to the bottom of first connecting pipe, and the width of iron block is less than the width of first connecting pipe, and the iron block is convenient to be connected with magnetic iron.

The utility model discloses possess following beneficial effect:

1. this insulating power cable of rated voltage crosslinked polyethylene, with the stopper of first connecting pipe upper and lower both sides slide in the inside mounting groove of second connecting pipe, the inside compression spring of second connecting pipe can be pressed to the one end of first connecting pipe, later the stopper can be in one side of spacing groove, clockwise turning first connecting pipe this moment, imbed the stopper in the inside of spacing groove, this moment alright connect first connecting pipe and second connecting pipe, just so connected two cables, for more convenient in the connection process, the width that has set up the stopper and the width looks adaptation of spacing groove, this can stabilize the installation between the cable, the operation is comparatively simple, avoid using supporting swivel nut to connect, certain time has been saved, and connect after the stability between the cable high, long service life.

2. This insulating power cable of rated voltage crosslinked polyethylene, can provide certain holding power and protection to annealing copper core through rubber layer and second crosslinked polyethylene protective sheath, can adapt to specific voltage between each layer each other simultaneously, it is comparatively convenient to use, when dismantling, only need inwards press first connecting pipe, later the first connecting pipe of anticlockwise rotation, roll out the stopper from the spacing groove, the compression spring replies, take out first connecting pipe from the mounting groove, alright dismantlement this moment, the operation is comparatively simple, convenience has been brought for staff's use.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is the sectional view structure diagram of the connection state of the first connection pipe and the second connection pipe of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is the schematic view of the cross-sectional structure of the cable of the present invention.

Fig. 5 is a schematic diagram of the structure of the core portion of the present invention.

In the figure: 1. a first cable; 101. a flame retardant layer; 102. a first crosslinked polyethylene protective sleeve; 2. a central column; 3. a wire core; 301. annealing the copper core; 302. a rubber layer; 303. a crosslinked polyethylene insulating layer; 304. A second crosslinked polyethylene protective sleeve; 4. a buffer zone; 5. a tape shielding layer; 7. a second cable; 8. a first connecting pipe; 801. a limiting block; 9. a second connecting pipe; 901. a compression spring; 902. sealing the insulating pad; 903. a limiting groove; 904. mounting grooves; 905. magnetic iron.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, a rated voltage crosslinked polyethylene insulated power cable includes a first cable 1, a wire core 3 and a second cable 7, wherein the wire core 3 includes an annealed copper core 301, a rubber layer 302, a crosslinked polyethylene insulating layer 303 and a second crosslinked polyethylene protective sleeve 304, the annealed copper core 301 is disposed on the inner side of the crosslinked polyethylene insulating layer 303, adjacent annealed copper cores 301 are stranded, a glass fiber tape is filled in the rubber layer 302, the rubber layer 302 is sleeved on the outer surface of the crosslinked polyethylene insulating layer 303, the second crosslinked polyethylene protective sleeve 304 is sleeved on the outer side of the rubber layer 302, a central column 2 is disposed between adjacent wire cores 3, a buffer belt 4 is disposed on the outer side of the second crosslinked polyethylene protective sleeve 304, a cavity between the buffer belt 4 and the wire core 3 is filled with polyolefin, a shielding layer 5 is sleeved on the outer side of the buffer belt 4, the first cable belt 1 includes a flame retardant layer 101 and the first crosslinked polyethylene protective sleeve 102, the outside of band shielding layer 5 is equipped with fire-retardant layer 101, and first crosslinked polyethylene protective sheath 102 has been cup jointed to the surface on fire-retardant layer 101, has set up buffer zone 4 in the outside of refill 3, can provide certain cushion effect when laying and tensile, has improved the life of this cable to a certain extent.

In fig. 1 and 2: the outer surface of the first cable 1 is provided with a first connecting pipe 8, the bottom end of the first connecting pipe 8 is provided with an iron block, the width of the iron block is smaller than that of the first connecting pipe 8, the upper and lower surfaces of the first connecting pipe 8 are fixedly provided with limit blocks 801, the width of the limit blocks 801 is matched with that of the limit grooves 903, the width of the limit blocks 801 is smaller than that of the installation grooves 904, the outer surface of the second cable 7 is provided with a second connecting pipe 9, the second connecting pipe 9 comprises a compression spring 901, a sealing insulating pad 902, a limit groove 903, an installation groove 904 and magnetic iron 905, the upper and lower inner walls of the second connecting pipe 9 are both fixedly connected with the sealing insulating pad 902, the inner wall of the second connecting pipe 9 is fixedly connected with the compression spring 901, the front end of the compression spring 901 is fixedly provided with the magnetic iron 905, the installation groove 904 is formed in the second connecting pipe 9, the, stopper 801 with first connecting pipe 8 upper and lower both sides slides in the inside mounting groove 904 of second connecting pipe 9, the inside compression spring 901 of second connecting pipe 9 can be pressed to first connecting pipe 8's one end, later stopper 801 can be in one side of spacing groove 903, clockwise rotation first connecting pipe 8 this moment, imbed stopper 801 in the inside of spacing groove 903, alright connect first connecting pipe 8 and second connecting pipe 9 this moment, just connected two cables, the operation is comparatively simple, avoid using supporting swivel nut to connect, certain time has been saved.

When the cable is used, the rubber layer 302 and the second cross-linked polyethylene protective sleeve 304 can provide certain supporting force and protection for the annealed copper core 301, the buffer belt 4 is arranged on the outer side of the wire core 3, so that certain buffer force can be provided during laying and stretching, the service life of the cable is prolonged to a certain extent, meanwhile, specific voltage can be adapted among the layers, and the cable is convenient to use; when two cables are connected, because the cables are provided with connecting pipes at the beginning, the limiting blocks 801 at the upper side and the lower side of the first connecting pipe 8 slide in the mounting grooves 904 in the second connecting pipe 9, one end of the first connecting pipe 8 presses the compression spring 901 in the second connecting pipe 9, then the limiting block 801 is positioned at one side of the limiting groove 903, at the moment, the first connecting pipe 8 is rotated clockwise, the limiting block 801 is embedded in the limiting groove 903, at the moment, the first connecting pipe 8 and the second connecting pipe 9 can be connected, and the two cables are connected, in order to be more convenient in the connection process, one end of the compression spring 901 is provided with a magnetic iron 905, so that the first connecting pipe 8 can be tightly adsorbed, the width of the limiting block 801 is matched with the width of the limiting groove 903, so that the cables can be stably mounted, when the cables are dismounted, only the first connecting pipe 8 needs to be pressed inwards, afterwards, anticlockwise rotate first connecting pipe 8, rotate out limiting block 801 from limiting groove 903, compress spring 901 and reply, take out first connecting pipe 8 from mounting groove 904, alright dismantle this moment, the operation is comparatively simple.

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. The utility model provides a rated voltage crosslinked polyethylene insulated power cable, includes first cable (1), sinle silk (3) and second cable (7), its characterized in that: the cable core (3) comprises an annealed copper core (301), a rubber layer (302), a cross-linked polyethylene insulating layer (303) and a second cross-linked polyethylene protective sleeve (304), the annealed copper core (301) is arranged on the inner side of the cross-linked polyethylene insulating layer (303), the rubber layer (302) is sleeved on the outer surface of the cross-linked polyethylene insulating layer (303), the second cross-linked polyethylene protective sleeve (304) is sleeved on the outer portion of the rubber layer (302), a central column (2) is arranged between adjacent cable cores (3), a buffer belt (4) is arranged on the outer side of the second cross-linked polyethylene protective sleeve (304), a belt shielding layer (5) is sleeved on the outer side of the buffer belt (4), the first cable (1) comprises a flame-retardant layer (101) and a first cross-linked polyethylene protective sleeve (102), and the flame-retardant layer (101) is arranged on the outer side of the belt shielding layer, the outer surface of the flame-retardant layer (101) is sleeved with a first cross-linked polyethylene protective sleeve (102), the outer surface of the first cable (1) is provided with a first connecting pipe (8), the upper surface and the lower surface of the first connecting pipe (8) are fixedly provided with limiting blocks (801), the outer surface of the second cable (7) is provided with a second connecting pipe (9), the second connecting pipe (9) comprises a compression spring (901), a sealing insulating pad (902), a limiting groove (903), a mounting groove (904) and magnetic iron (905), the upper inner wall and the lower inner wall of the second connecting pipe (9) are both fixedly connected with the sealing insulating pad (902), the inner wall of the second connecting pipe (9) is fixedly connected with a spring compression body (901), the front end of the compression spring (901) is fixedly provided with the magnetic iron (905), the mounting groove (904) is formed in the second connecting pipe (9), and a limiting groove (903) is formed in the second connecting pipe (9) and in the mounting groove (904).

2. A voltage rated cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the adjacent annealed copper cores (301) are distributed in a twisted mode, and glass fiber tapes are filled in the rubber layer (302).

3. A voltage rated cross-linked polyethylene insulated power cable according to claim 1, characterized in that: and polyolefin is filled in a cavity between the buffer strip (4) and the wire core (3).

4. A voltage rated cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the width of the limiting block (801) is matched with the width of the limiting groove (903), and the width of the limiting block (801) is smaller than the width of the mounting groove (904).

5. A voltage rated cross-linked polyethylene insulated power cable according to claim 1, characterized in that: and an iron block is installed at the bottom end of the first connecting pipe (8), and the width of the iron block is smaller than that of the first connecting pipe (8).