CN212303182U

CN212303182U - Cross-linked polyethylene insulated fire-resistant power cable

Info

Publication number: CN212303182U
Application number: CN202021053693.8U
Authority: CN
Inventors: 贺达园; 杨德丰; 贺轶宁; 储程
Original assignee: Jiangsu Huayuan Cable Co ltd
Current assignee: Jiangsu Huayuan Cable Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-01-05
Anticipated expiration: 2030-06-10

Abstract

The utility model discloses an insulating fire-resistant power cable of crosslinked polyethylene relates to power cable technical field, and it is not enough good to insulate high temperature resistance when solving current crosslinked polyethylene power cable and using, and inconvenient problem of cutting the cable exocuticle when connecting. The fire-resistant outer protective sleeve shell of crosslinked polyethylene cable insulation has the lag in the externally mounted of one side, the inside of lag is provided with the installing port, the inside of lag below is provided with presses the groove, the internally mounted who presses the groove has the bullet piece of pressing, the internally mounted of the fire-resistant outer protective sleeve shell of crosslinked polyethylene cable insulation has around the package piece, the internally mounted who winds the package piece has the buffer layer.

Description

Cross-linked polyethylene insulated fire-resistant power cable

Technical Field

The utility model relates to a power cable technical field specifically is insulating fire-resistant power cable of crosslinked polyethylene.

Background

The power cable is used for transmitting and distributing electric energy, 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, and has a gradually increased proportion in the power line, and is a cable product used for transmitting and distributing high-power electric energy in a trunk line of a power system; the polyethylene crosslinking technology is one of the important means for improving the material performance, the performance of the PE modified by crosslinking can be greatly improved, the comprehensive performances of mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like of the PE are obviously improved, the temperature resistance grade is obviously improved, and the application field of the PE is greatly widened.

However, the existing crosslinked polyethylene power cable has poor insulation and high temperature resistance when in use, and the outer shell of the cable is inconvenient to cut when in connection; thus, the existing need is not met, for which we propose a cross-linked polyethylene insulated fire resistant power cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating fire-resistant power cable of crosslinked polyethylene to it is not enough to insulate high temperature resistance when using to solve the current crosslinked polyethylene power cable that proposes in the above-mentioned background art, inconvenient problem of cutting the cable exocuticle during connection.

In order to achieve the above object, the utility model provides a following technical scheme: insulating fire-resistant power cable of crosslinked polyethylene, including the insulating fire-resistant outer jacket cover shell of crosslinked polyethylene cable, the externally mounted of the insulating fire-resistant outer jacket cover shell one side of crosslinked polyethylene cable has the lag, the inside of lag is provided with the installing port, the inside of lag below is provided with presses the groove, press the internally mounted in groove to have and press the bullet piece, the internally mounted of the insulating fire-resistant outer jacket cover shell of crosslinked polyethylene cable has around a packet piece, the internally mounted around a packet piece has the buffer layer.

Preferably, the buffer layer is internally provided with a high-temperature-resistant filler, and the middle position inside the insulating and fire-resistant outer sheath casing of the cross-linked polyethylene cable is provided with an inner insulating sheath.

Preferably, an insulating filling protection layer is arranged inside the inner insulating sheath, and a wrapping lining is arranged inside the insulating filling protection layer.

Preferably, the fire-retardant oxygen sheath that separates is installed to the inside of wrapping inside lining, fire-retardant oxygen sheath and wrapping inside lining paste and connect, the internally mounted of fire-retardant oxygen sheath has the power cable conductor.

Preferably, the protecting sleeve is internally provided with a shell removing seat, the shell removing seat is internally provided with an anti-abrasion block, and the shell removing seat is fixedly connected with the anti-abrasion block and the protecting sleeve.

Preferably, the internally mounted of abrasionproof decreases the piece has vertical cutting knife piece, vertical cutting knife piece is provided with a plurality of, and the vertical cutting knife piece of a plurality of distributes in proper order, the inside one end of seat is got rid of to the shell is provided with the spout.

Preferably, the internally mounted of spout has horizontal cutting blade, horizontal cutting blade and spout sliding connection, the support column is installed to horizontal cutting blade's below, fixed stopper is installed to the below of support column, the spring is all installed to the both sides of fixed stopper top, spring and support column and the equal fixed connection of fixed stopper.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a buffer layer, high temperature resistant filler, interior insulating sheath and fire-retardant oxygen sheath that separates have been set up, during the use, the buffer layer has certain buffering effect when having external force to oppress the cable, and protective properties is good, and high temperature resistant filler high temperature resistance can be good, and interior insulating sheath insulating nature is good, and fire-retardant oxygen sheath that separates can play fire-retardant effect, and can prevent that the power cable conductor from producing the oxidation inside, and the wholeness can be more perfect;

2. the utility model discloses a set up vertical cutting knife piece, transverse cutting blade, spring and press the bullet piece, during connecting wire, vertical cutting knife piece can vertically cut open the fire-resistant outer jacket shell of crosslinked polyethylene cable insulation, rotates the shell and gets rid of the seat, presses down the bullet piece, and the spring has certain elasticity, is convenient for carry out transverse cutting through transverse cutting blade, excellent in use effect.

Drawings

Fig. 1 is a front view of the cross-linked polyethylene insulated fire-resistant power cable of the present invention;

fig. 2 is a schematic structural view of the cross-linked polyethylene insulated fire-resistant power cable of the present invention;

fig. 3 is a schematic structural view of the seat for removing the shell according to the present invention.

In the figure: 1. the insulating fire-resistant outer protective casing of crosslinked polyethylene cable; 2. a protective sleeve; 3. an installation port; 4. wrapping the blocks; 5. an inner insulating sheath; 6. a flame-retardant oxygen-insulating sheath; 7. a power cable conductor; 8. pressing the elastic block; 9. a buffer layer; 10. high temperature resistant filler; 11. insulating and filling the protective layer; 12. wrapping the inner lining; 13. a housing removal seat; 14. an anti-wear block; 15. a chute; 16. a longitudinal cutting blade block; 17. fixing a limiting block; 18. a spring; 19. a transverse cutting blade; 20. pressing the groove; 21. and (4) a support column.

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.

Referring to fig. 1-3, the present invention provides an embodiment: insulating fire-resistant power cable of crosslinked polyethylene, including insulating fire-resistant outer protective casing cover shell 1 of crosslinked polyethylene cable, the externally mounted of insulating fire-resistant outer protective casing cover shell 1 one side of crosslinked polyethylene cable has lag 2, the protectiveness is good, the inside of lag 2 is provided with installing port 3, the inside of lag 2 below is provided with presses groove 20, the internally mounted that presses groove 20 has a press elastic block 8, the internally mounted of insulating fire-resistant outer protective casing cover shell 1 of crosslinked polyethylene cable has around package piece 4, the internally mounted around package piece 4 has buffer layer 9, there is the effect of a buffering.

Further, the buffer layer 9 is internally provided with a high-temperature-resistant filler 10, and the middle position inside the insulating fire-resistant outer protective sleeve shell 1 of the cross-linked polyethylene cable is provided with an inner insulating sheath 5, so that the insulating effect is good during use.

Further, an insulating filling protection layer 11 is arranged inside the inner insulating sheath 5, and a wrapping lining 12 is arranged inside the insulating filling protection layer 11, so that the overall performance is complete.

Furthermore, the fire-retardant oxygen-insulating sheath 6 is arranged inside the wrapping lining 12, the fire-retardant oxygen-insulating sheath 6 is connected with the wrapping lining 12 in a sticking way, and the power cable conductor 7 is arranged inside the fire-retardant oxygen-insulating sheath 6, so that the structure is stable.

Further, the internally mounted of lag 2 has the shell to get rid of seat 13, and the internally mounted that the seat 13 was got rid of to the shell has wear prevention piece 14, and seat 13 and wear prevention piece 14 and the equal fixed connection of lag 2 are got rid of to the shell, and connection stability is higher.

Further, the inside of the anti-abrasion block 14 is provided with a longitudinal cutting knife block 16, the longitudinal cutting knife block 16 is provided with a plurality of longitudinal cutting knife blocks 16, the longitudinal cutting knife blocks 16 are sequentially distributed, and the sliding groove 15 is formed in one end, inside the shell removing seat 13, of the shell, so that the anti-abrasion block is convenient to use.

Further, the internally mounted of spout 15 has horizontal cutting blade 19,

horizontal cutting blade

19 and 15 sliding connection of spout, and support column 21 is installed to horizontal cutting blade 19's below, and fixed stopper 17 is installed to support column 21's below, and spring 18 is all installed to the both sides of fixed stopper 17 top, and spring 18 and support column 21 and the equal fixed connection of fixed stopper 17, support performance is good, is convenient for use.

The working principle is as follows: when the device is used, before the wires and cables are connected, one end of the insulating fire-resistant outer protection casing sleeve 1 of the crosslinked polyethylene cable firstly slides to penetrate through one end, provided with the transverse cutting blade 19, of the outer casing removing seat 13, the longitudinal cutting blade block 16 slides with the insulating fire-resistant outer protection casing sleeve 1 of the crosslinked polyethylene cable to generate friction to longitudinally divide the insulating fire-resistant outer protection casing sleeve 1 of the crosslinked polyethylene cable, the abrasion-proof block 14 has a protection effect, after the outer casing removing seat 13 slides to a specified position, the elastic block 8 can be pressed to slide in the pressing groove 20 by pressing the elastic block 8, the fixed limiting block 17 and the supporting column 21 are driven to move towards one side, so that the transverse cutting blade 19 is driven to move in the sliding groove 15 to be close to the longitudinal cutting end face of the insulating fire-resistant outer protection casing sleeve 1 of the crosslinked polyethylene cable, the spring 18 has certain telescopic elasticity, the use is convenient to press, the elastic block 8 is, thereby drive horizontal cutting blade 19 and cut off the vertical terminal surface of the fire-resistant outer protective sheath shell 1 of crosslinked polyethylene cable insulation of drawing out, the follow-up use of being convenient for, 2 texture softly of lag, convenient operation, after cutting, expose internal insulation sheath 5 and power cable conductor 7, the convenience is connected power cable conductor 7, internal insulation sheath 5 and insulating filling protective layer 11 insulating properties are good, high temperature resistant filler 10 has a high temperature resistant effect, fire-retardant oxygen sheath 6 can play fire-retardant effect, and can prevent the inside oxidation that produces of power cable conductor 7, when external force oppresses power cable, buffer layer 9 can play certain cushioning effect, protective properties is good.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Insulating fire-resistant power cable of crosslinked polyethylene, including insulating fire-resistant outer protective casing shell (1) of crosslinked polyethylene cable, its characterized in that: the fire-resistant outer protective casing of crosslinked polyethylene cable insulation shell (1) one side externally mounted has lag (2), the inside of lag (2) is provided with installing port (3), inside of lag (2) below is provided with presses groove (20), the internally mounted who presses groove (20) has presses bullet piece (8), the internally mounted of the fire-resistant outer protective casing of crosslinked polyethylene cable insulation shell (1) has around package piece (4), the internally mounted who winds package piece (4) has buffer layer (9).

2. The cross-linked polyethylene insulated fire-resistant power cable according to claim 1, characterized in that: the high-temperature-resistant cable is characterized in that high-temperature-resistant filler (10) is installed inside the buffer layer (9), and an inner insulating sheath (5) is installed in the middle of the inside of the insulating and fire-resistant outer protective casing (1) of the cross-linked polyethylene cable.

3. The cross-linked polyethylene insulated fire-resistant power cable according to claim 2, characterized in that: an insulating filling protection layer (11) is arranged inside the inner insulating sheath (5), and a wrapping lining (12) is arranged inside the insulating filling protection layer (11).

4. The cross-linked polyethylene insulated fire-resistant power cable according to claim 3, characterized in that: the fireproof oxygen-insulating protective sleeve is characterized in that a fireproof oxygen-insulating sheath (6) is arranged inside the wrapping lining (12), the fireproof oxygen-insulating sheath (6) is connected with the wrapping lining (12) in a sticking mode, and a power cable conductor (7) is arranged inside the fireproof oxygen-insulating sheath (6).

5. The cross-linked polyethylene insulated fire-resistant power cable according to claim 1, characterized in that: the utility model discloses a protective cover, including lag (2), the internally mounted of lag (2) has the shell to get rid of seat (13), the internally mounted of shell getting rid of seat (13) has abrasionproof decreases piece (14), the shell gets rid of seat (13) and abrasionproof decreases piece (14) and lag (2) equal fixed connection.

6. The cross-linked polyethylene insulated fire-resistant power cable according to claim 5, characterized in that: the internally mounted of abrasionproof decreases piece (14) has vertical cutting knife piece (16), vertical cutting knife piece (16) are provided with a plurality of, and vertical cutting knife piece (16) of a plurality of distribute in proper order, the inside one end of seat (13) is got rid of to the shell is provided with spout (15).

7. The cross-linked polyethylene insulated fire-resistant power cable according to claim 6, characterized in that: the internally mounted of spout (15) has transverse cutting blade (19), transverse cutting blade (19) and spout (15) sliding connection, support column (21) are installed to the below of transverse cutting blade (19), fixed stopper (17) are installed to the below of support column (21), spring (18) are all installed to the both sides of fixed stopper (17) top, equal fixed connection of spring (18) and support column (21) and fixed stopper (17).