CN214253967U

CN214253967U - Photoelectric composite low-voltage fireproof power cable

Info

Publication number: CN214253967U
Application number: CN202022886832.1U
Authority: CN
Inventors: 缪建祥
Original assignee: Jiangsu Dadi Wire & Cable Co ltd
Current assignee: Jiangsu Dadi Wire & Cable Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-09-21
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses a compound low pressure fire prevention power cable of photoelectricity relates to the relevant field of power cable, does not have good fire behavior for solving present cable to lead to this power cable in the in-process that uses easily, the security performance is relatively poor, can not satisfy people's user demand's problem. The utility model discloses a waterproof layer, including wearing layer, storage layer, waterproof layer, fixed ring, cable body, the central point of waterproof layer puts and pegs graft there is the optical cable body, the storage layer has been bonded to the one side inner wall of wearing layer, and the circumference inner wall of storage layer opens there is the storage cavity, the one side inner wall that wearing layer was kept away from on the storage layer sets up the back-fire relief subassembly, the inside of waterproof layer is provided with fixed ring, and fixed ring's inside pegs graft and have the cable body, the central point of waterproof layer puts and pegs graft there is the optical cable body. The utility model discloses in when this cable meets the condition of a fire at the in-process that uses, flame can burn the stock solution pipe that the storage intracavity portion set up at the in-process of firing the cable to make the inside liquid nitrogen of stock solution gasify the blowout rapidly, can reduce temperature in the twinkling of an eye, thereby play good fire prevention effect.

Description

Photoelectric composite low-voltage fireproof power cable

Technical Field

The utility model relates to a power cable correlation field specifically is a compound low pressure fire prevention power cable of photoelectricity.

Background

The power cable is used for transmitting and distributing electric energy, is usually 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 is usually a cable similar to a rope formed by twisting a plurality of or a plurality of groups of leads (at least two in each group), wherein each group of leads are mutually insulated and usually twisted around a center, and the whole outer surface is wrapped with a highly-insulated covering layer. The cable has the characteristics of internal electrification and external insulation.

When the photoelectric composite power cable is used in some areas with higher working environment temperature, the traditional photoelectric composite low-voltage power cable has no good fireproof performance, so that the safety performance of the power cable is poor in the using process, and the using requirements of people cannot be met. Therefore, a photoelectric composite low-voltage fireproof power cable is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound low pressure fire prevention power cable of photoelectricity to the solution does not have good fire behavior in the proposition in the above-mentioned background art, thereby leads to this power cable in the in-process that uses easily, and the security performance is relatively poor, can not satisfy people's user demand's problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a compound low pressure fire prevention power cable of photoelectricity, includes the wearing layer and sets up in the waterproof layer of wrapping up in the wearing layer inside, one side inner wall of wearing layer bonds there is the storing layer, and the circumference inner wall on storing layer opens and to have the storage chamber, one side inner wall that the wearing layer was kept away from to the storing layer sets up the back-fire relief subassembly, the inside of waterproof layer is provided with solid fixed ring, and just solid fixed ring's inside is pegged graft and is had the cable body, the central point of waterproof layer puts to peg graft and has the optical cable body.

In a further embodiment, the interior of the retaining ring is filled with fire retardant mud, and the fire retardant mud is in contact with the cable body.

In a further embodiment, the circumferential outer wall of the cable body is wrapped with a second insulating layer, and the circumferential outer wall of the second insulating layer is bonded with a first insulating layer.

In a further embodiment, the inside of storage cavity is provided with the liquid storage pipe that the equidistance is circular distribution, and the inside of liquid storage pipe holds liquid nitrogen, and liquid filling hole has been opened to one side outer wall of liquid storage pipe.

In a further embodiment, the fire retardant assembly comprises a fixed seat fixedly connected to the inner wall of one side of the storage material layer, and the air bag is adhered to the inner wall of one side of the fixed seat.

In a further embodiment, the air bag contains carbon dioxide inside, and the circumferential outer wall of the waterproof layer is provided with tooth blocks.

In a further embodiment, the waterproof layer is internally filled with flame-retardant filling ropes.

In a further embodiment, one end of the cable body is plugged with cable cores, and the number of the cable cores is four.

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

1. the utility model discloses an in through the storage material layer, storage cavity, liquid storage pipe and the notes liquid hole that sets up, when this cable meets the condition of a fire at the in-process that uses, flame can burn the liquid storage pipe that the storage cavity is inside to the in-process of firing the cable to make the inside liquid nitrogen of liquid storage pipe gasify the blowout rapidly, can reduce the temperature in the twinkling of an eye, thereby play good fire prevention effect.

2. The utility model discloses an in gasbag, fixing base and the tooth piece through setting up, along with cable surface temperature's rising gradually can lead to the gasbag also can continue the inflation, along with the gasbag inflation until its tooth piece that sets up with waterproof layer one side outer wall contacts, puncture the gasbag through the tooth piece can be quick to make the inside carbon dioxide gas of gasbag spout rapidly, played the effect of good isolated air, effectually prevented continuation of intensity of a fire and spread.

3. The utility model discloses an in through the solid fixed ring that sets up, fire-retardant packing rope and back-fire relief mud, at the in-process that the cable used, the solid fixed ring that sets up by the device inside can carry out fine centre gripping to the cable body fixed, avoid its in-process in transportation or installation to appear the condition such as dislocation intertwine, guaranteed the stability that the cable used after the installation, simultaneously through filling at the inside fire-retardant packing rope of device and back-fire relief mud, improvement power cable's that can go further fire behavior has satisfied people's user demand.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A of the present invention;

fig. 3 is a schematic view of the cable body structure of the present invention.

In the figure: 1. a wear layer; 2. a liquid storage pipe; 3. a fixing ring; 4. a flame retardant filler rope; 5. an optical cable body; 6. a cable core; 7. a cable body; 8. a first insulating layer; 9. an air bag; 10. a material storage cavity; 11. a fixed seat; 12. a tooth block; 13. a liquid injection hole; 14. a waterproof layer; 15. fire retardant mud.

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: the utility model provides a compound low pressure fire prevention power cable of photoelectricity, include wearing layer 1 and set up in wrapping up in the waterproof layer 14 of wearing layer 1 inside, the one side inner wall of wearing layer 1 bonds and has the storage layer, and the circumference inner wall of storage layer opens there is storage cavity 10, one side inner wall that wearing layer 1 was kept away from on the storage layer sets up the back-fire relief subassembly, the inside of waterproof layer 14 is provided with solid fixed ring 3, and solid fixed ring 3's inside is pegged graft and is had cable body 7, waterproof layer 14's central point puts to peg graft and has optical cable body 5, it can carry out fine centre gripping fixed to cable body 7 through solid fixed ring 3, avoid its condition such as dislocation intertwine to appear in the in-process of transportation or installation, the stability of cable use after the installation has been guaranteed.

Further, the inside of the fixing ring 3 is filled with fire retardant mud 15, and the fire retardant mud 15 is in contact with the cable body 7.

Further, the circumference outer wall parcel of cable body 7 has the second insulating layer, and the circumference outer wall bonding of second insulating layer has first insulating layer 8, can make cable body 7 have good insulating effect through first insulating layer 8 and second insulating layer.

Further, the inside of storage cavity 10 is provided with the liquid storage pipe 2 that the equidistance is circular distribution, and the inside of liquid storage pipe 2 has held the liquid nitrogen, and one side outer wall of liquid storage pipe 2 is opened there is annotating liquid hole 13, and flame can burn the liquid storage pipe 2 of the inside setting of storage cavity 10 at the in-process to the cable firing to make the quick gasification blowout of liquid nitrogen of liquid storage pipe 2 inside, can reduce the temperature in the twinkling of an eye, thereby play good fire prevention effect.

Further, the back-fire relief subassembly includes fixed connection at the fixing base 11 of storage layer one side inner wall, and one side inner wall bonding of fixing base 11 has gasbag 9.

Further, the inside of gasbag 9 has held carbon dioxide, and waterproof layer 14's circumference outer wall is provided with tooth piece 12, can lead to gasbag 9 also can continue the inflation along with the gradual rise of cable surface temperature, along with gasbag 9 inflation until its tooth piece 12 with waterproof layer 14 one side outer wall setting contacts, puncture gasbag 9 through tooth piece 12 can be quick, thereby make the inside carbon dioxide gas of gasbag 9 spout rapidly, the effect of good isolated air has been played, the effectual continuation that has prevented the intensity of a fire spreads.

Further, the inside packing of waterproof layer 14 has fire-retardant packing rope 4, simultaneously through filling at the inside fire-retardant packing rope 4 of device, can further improve power cable's fire behavior, satisfied people's user demand.

Further, one end of the cable body 7 is inserted with the cable cores 6, and the number of the cable cores 6 is four.

The working principle is as follows: when the cable is used, when the cable encounters a fire, flame burns the liquid storage pipe 2 arranged in the storage cavity 10 in the process of burning the cable, so that liquid nitrogen in the liquid storage pipe 2 is quickly gasified and sprayed, the temperature can be instantly reduced, a good fireproof effect is achieved, the air bag 9 can be continuously expanded along with the gradual rise of the temperature of the outer surface of the cable, the air bag 9 is expanded until the air bag is contacted with the tooth block 12 arranged on the outer wall of one side of the waterproof layer 14, the air bag 9 can be quickly punctured through the tooth block 12, so that carbon dioxide gas in the air bag 9 is quickly sprayed, a good air isolation effect is achieved, the fire is effectively prevented from continuously spreading, the cable body 7 can be well clamped and fixed by the fixing ring 3 arranged in the device in the process of using the cable, and the situations of dislocation and intertwining and the like in the process of transportation or installation are avoided, the stability of cable after the installation use has been guaranteed, simultaneously through filling at the inside fire-retardant filler rope 4 of device and back-fire relief mud 15, improvement power cable's that can further go forward fire behavior has satisfied people's user demand.

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. The utility model provides a compound low pressure fire prevention power cable of photoelectricity, includes wearing layer (1) and sets up in waterproof layer (14) of wrapping up in wearing layer (1) inside, its characterized in that: the cable is characterized in that a storage material layer is bonded to the inner wall of one side of the wear-resistant layer (1), a storage cavity (10) is formed in the circumferential inner wall of the storage material layer, a fire retardant assembly is arranged on the inner wall of one side, far away from the wear-resistant layer (1), of the storage material layer, a fixing ring (3) is arranged inside the waterproof layer (14), a cable body (7) is inserted inside the fixing ring (3), and an optical cable body (5) is inserted in the center of the waterproof layer (14).

2. The photoelectric composite low-voltage fireproof power cable according to claim 1, characterized in that: the inside of solid fixed ring (3) is filled with and hinders fire mud (15), and hinders fire mud (15) and contact with cable body (7).

3. The photoelectric composite low-voltage fireproof power cable according to claim 2, characterized in that: the cable is characterized in that the outer circumferential wall of the cable body (7) is wrapped with a second insulating layer, and a first insulating layer (8) is bonded to the outer circumferential wall of the second insulating layer.

4. The photoelectric composite low-voltage fireproof power cable according to claim 3, wherein: the inside of storage cavity (10) is provided with liquid storage pipe (2) that the equidistance is circular distribution, and the inside of liquid storage pipe (2) is held and is had liquid nitrogen, and liquid filling hole (13) have been opened to one side outer wall of liquid storage pipe (2).

5. The photoelectric composite low-voltage fireproof power cable according to claim 4, wherein: the fire retardant component comprises a fixed seat (11) fixedly connected to the inner wall of one side of the material storage layer, and an air bag (9) is bonded to the inner wall of one side of the fixed seat (11).

6. The photoelectric composite low-voltage fireproof power cable according to claim 5, wherein: carbon dioxide is contained in the air bag (9), and a tooth block (12) is arranged on the circumferential outer wall of the waterproof layer (14).

7. The photoelectric composite low-voltage fireproof power cable according to claim 6, wherein: and the flame-retardant filling rope (4) is filled in the waterproof layer (14).

8. The photoelectric composite low-voltage fireproof power cable according to claim 7, wherein: one end of the cable body (7) is spliced with cable cores (6), and the number of the cable cores (6) is four.