CN210984316U

CN210984316U - Underground cable with high fire resistance

Info

Publication number: CN210984316U
Application number: CN201921888003.8U
Authority: CN
Inventors: 张东
Original assignee: Jiangsu Moral Materials Technology Ltd Again
Current assignee: Jiangsu Moral Materials Technology Ltd Again
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-10
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to the technical field of cables, and a high fire resistance underground cable is disclosed, which comprises a conductor, the outer wall fixedly connected with insulating layer of conductor, the outer wall swing joint of insulating layer has the flame retardant coating, the outer wall fixedly connected with shielding layer of flame retardant coating, the outer wall swing joint of shielding layer has the isolation layer, the inner wall swing joint of isolation layer has the branch sinle silk, the outer wall swing joint of shielding layer has the nexine, the inner wall swing joint of nexine has the casing. This cable is used to high fire resistance underground has reached the purpose of high fire resistance, has solved the comparatively single and fire resistance relatively poor problem of general fire resistance underground cable structure, and stable in structure has improved the torsion resistance and the anti high mechanical stress of cable, and the cable of being convenient for satisfies the problem of fire prevention and the line is walked to the underground simultaneously, does benefit to the life of extension cable, has improved the practicality and the fire resistance of cable to the security of cable has been improved, user's user demand has been satisfied.

Description

Underground cable with high fire resistance

Technical Field

The utility model relates to the technical field of cables, specifically be a cable is used to high refractivity underground.

Background

The fire-resistant cable is a cable capable of keeping safe operation for a certain time under the condition of flame combustion, and is widely applied to places related to fire safety and fire-fighting lifesaving, such as high-rise buildings, underground railways, underground streets, large-scale power stations, important industrial and mining enterprises and the like, for example, power supply lines and control lines of emergency facilities such as fire-fighting equipment, emergency guide lamps and the like.

The existing fire-resistant cable is single in structure, poor in torsion resistance and high mechanical stress resistance, incapable of solving the problems of fire prevention and underground wiring, not beneficial to prolonging the service life of the cable, low in practicability, poor in fire resistance, easy to cause underground fire hazard, capable of influencing the safety of urban power supply, capable of causing property loss and casualties, and needing to improve the existing cable.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a cable is used to high refractivity underground possesses advantages such as high refractivity, has solved the comparatively single and fire-resistant relatively poor problem of cable structure for general refractivity underground.

(II) technical scheme

In order to realize the purpose of the high fire resistance of the underground cable with high fire resistance, the utility model provides a following technical scheme: a high-fire-resistance underground cable comprises a conductor, wherein an insulating layer is fixedly connected to the outer wall of the conductor, a fire-resistant layer is movably connected to the outer wall of the insulating layer, a shielding layer is fixedly connected to the outer wall of the fire-resistant layer, an isolating layer is movably connected to the outer wall of the shielding layer, a branch cable core is movably connected to the inner wall of the isolating layer, an inner layer is movably connected to the outer wall of the shielding layer, a shell is movably connected to the inner wall of the inner layer, a main cable core is fixedly connected to the inner wall of the shell, an wrapping layer is fixedly connected to the outer wall of the inner layer, a first filling layer is fixedly connected to the outer wall of the wrapping layer, a main shielding layer is fixedly connected to the outer wall of the first filling layer, a second filling layer is fixedly connected to the outer wall of the main shielding layer, a control cable core is, the outer wall has been seted up the draw-in groove, the outer wall fixedly connected with fixture block of control sinle silk.

Preferably, the number of the insulating layers is fifteen, every three insulating layers form a group, the five groups of insulating layers are arranged on the inner wall of the inner layer at equal intervals, and the insulating layers are crosslinked polyethylene insulating layers.

Preferably, the fire-resistant layer is a ceramic silicon rubber fire-resistant layer, and the shape and the size of the fire-resistant layer are matched with those of the combination of the three insulating layers.

Preferably, the lining is a low-smoke halogen-free lining, and the isolation layer is a ceramic silicon rubber isolation layer.

Preferably, the total shielding layer is a regular-hexagon total shielding layer, the shape and size of the total shielding layer are matched with those of the outer layer, the outer layer is a polyolefin outer layer, the wrapping layer is a polyurethane wrapping layer, and the first filling layer and the second filling layer are polyurethane foam filling layers.

Preferably, the number of the control wire cores is five, the five control wire cores are arranged on the inner wall of the second filling layer at equal intervals, and the combined diameter of the second filling layer and the total shielding layer is the same as that of the outer layer.

Preferably, the control wire core is connected with the clamping groove through a clamping block, and the shape and the size of the clamping block are matched with those of the clamping groove.

(III) advantageous effects

Compared with the prior art, the utility model provides a cable is used to high refractivity underground possesses following beneficial effect:

1. this cable is used to high refractivity underground, through the nexine, first filling layer, total shield layer, the second filling layer, the outer strata, control core, mutually supporting of draw-in groove and fixture block is used, the purpose of high refractivity has been reached, the comparatively single and relatively poor problem of refractivity of general cable structure for the refractivity underground has been solved, stable in structure, the twisting resistance and the anti high mechanical stress of cable have been improved, be convenient for the cable satisfy the problem of fire prevention and the line is walked to the underground simultaneously, do benefit to the life of extension cable, the practicality and the refractivity of cable have been improved, thereby the security of cable has been improved, user's user demand has been satisfied.

2. This cable is used to high refractivity underground through total shielding layer, skin and the control core that sets up, has reached stable in structure's purpose, has strengthened the stable structure of cable through regular hexagon structure, has strengthened the security and the stability of cable underground wiring, the increase of service life of being convenient for, and the flexible structure is stable, and convenient to use person uses.

3. This cable is used to high fire resistance underground through nexine, parcel layer, first filling layer and the second filling layer that sets up, has reached multiple fire-resistant insulating purpose, connects fixed insulating nature and the fire-resistant nature that is convenient for improve the cable through multilayer structure, increases the security of cable, and the material environmental protection, has improved the practicality of cable.

Drawings

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

FIG. 2 is a schematic view of the front cross-section structure of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure: 1. a conductor; 2. an insulating layer; 3. a refractory layer; 4. a shielding layer; 5. an isolation layer; 6. a branching core; 7. an inner layer; 8. a housing; 9. a wire core; 10. a wrapping layer; 11. a first filling layer; 12. a total shielding layer; 13. a second filling layer; 14. an outer layer; 15. a control wire core; 16. a card slot; 17. and (7) clamping blocks.

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 to 3, an underground cable with high fire resistance includes a conductor 1, wherein: the outer wall of the conductor 1 is fixedly connected with an insulating layer 2, the outer wall of the insulating layer 2 is movably connected with a fire-resistant layer 3, the fire-resistant layer 3 is a ceramic silicon rubber fire-resistant layer, the shape and the size of the fire-resistant layer 3 are matched with those of a combination of the three insulating layers 2, the ceramic silicon rubber material is a novel high-molecular fire-resistant material, the outer wall of the fire-resistant layer 3 is fixedly connected with a shielding layer 4, the outer wall of the shielding layer 4 is movably connected with an isolating layer 5, the inner wall of the isolating layer 5 is movably connected with a wire separating core 6, the outer wall of the shielding layer 4 is movably connected with an inner layer 7, the number of the insulating layers 2 is fifteen, each three insulating layers 2 are in one group, five groups of the insulating layers 2 are arranged on the inner wall of the inner layer 7 at equal intervals, the insulating layers 2 are crosslinked polyethylene insulating layers, the polyethylene crosslinking technology is, not only remarkably improves the comprehensive properties of PE, such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like, but also remarkably improves the temperature resistance level, thereby greatly widening the application field of PE, the inner layer 7 is a low-smoke halogen-free inner layer, the isolation layer 5 is a ceramic silicon rubber isolation layer, the low-smoke halogen-free material can reduce toxic and corrosive gas generated during combustion, the inner wall of the inner layer 7 is movably connected with the shell 8, the inner wall of the shell 8 is fixedly connected with the cable core 9, the outer wall of the inner layer 7 is fixedly connected with the wrapping layer 10, the outer wall of the wrapping layer 10 is fixedly connected with the first filling layer 11, the outer wall of the first filling layer 11 is fixedly connected with the total shielding layer 12, the outer wall of the total shielding layer 12 is fixedly connected with the second filling layer 13 through the inner layer 7, the wrapping layer 10, the first filling layer 11 and the second filling layer 13, the purpose of multiple fire-resistant insulation is achieved, the insulation and fire resistance of the cable are conveniently improved through the connection and fixation of a multilayer structure, the safety of the cable is improved, the material is environment-friendly, and the practicability of the cable is improved, the outer wall of the second filling layer 13 is fixedly connected with the outer layer 14, the total shielding layer 12 is a regular hexagonal total shielding layer, the shape and size of the total shielding layer 12 are matched with those of the outer layer 14, the outer layer 14 is a polyolefin outer layer, the wrapping layer 10 is a polyurethane wrapping layer, the first filling layer 11 and the second filling layer 13 are polyurethane foam filling layers, the polyolefin is a polymer of olefin, the polyurethane is named polyurethane which is a high molecular compound, the inner wall of the second filling layer 13 is fixedly connected with the control wire cores 15, the number of the control wire cores 15 is five, and the five control wire cores 15 are arranged on the inner wall of the second filling layer 13 at equal intervals, the diameter of the combination of the second filling layer 13 and the total shielding layer 12 is the same as that of the outer layer 14, the purpose of structural stability is achieved through the arranged total shielding layer 12, the outer layer 14 and the control wire core 15, the stable structure of the cable is enhanced through the regular hexagon structure, the safety and the stability of underground cable routing are enhanced, the service life is prolonged conveniently, the structure is flexible and stable, and the cable is convenient for a user to use, a clamping groove 16 is formed in the outer wall of the outer layer 14, a clamping block 17 is fixedly connected to the outer wall of the control wire core 15, the control wire core 15 is connected with the clamping groove 16 through the clamping block 17, the shape and the size of the clamping block 17 are matched with those of the clamping groove 16, and the purpose of high fire resistance is achieved through the mutual matching use of the inner layer 7, the first filling layer 11, the total shielding layer 12, the second filling layer 13, the outer layer 14, the control wire core, the problem of general refractiveness underground cable structure comparatively single and the incombustibility relatively poor is solved, stable in structure has improved the torsion resistance and the anti high mechanical stress of cable, and the cable of being convenient for satisfies the problem of fire prevention and the underground wiring of walking simultaneously, does benefit to the life of extension cable, has improved the practicality and the refractiveness of cable to improve the security of cable, satisfied user's user demand.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

When the shielding layer is used, the shielding layer 4, the isolation layer 5 and the shell 8 are wrapped in the wrapping layer 10 through the inner layer 7, the outer portion of the wrapping layer 10 and the inner portion of the total shielding layer 12 are connected and fixed through the first filling layer 11, and finally the total shielding layer 12 and the control wire core 15 are connected and fixed with the outer layer 14 through the second filling layer 13.

In conclusion, the underground cable with high fire resistance achieves the purpose of high fire resistance, solves the problems that the common underground cable with fire resistance is single in structure and poor in fire resistance, and meets the use requirements of users.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. A high fire resistance underground cable comprising a conductor (1), characterized in that: the outer wall of the conductor (1) is fixedly connected with an insulating layer (2), the outer wall of the insulating layer (2) is movably connected with a fire-resistant layer (3), the outer wall of the fire-resistant layer (3) is fixedly connected with a shielding layer (4), the outer wall of the shielding layer (4) is movably connected with an isolating layer (5), the inner wall of the isolating layer (5) is movably connected with a branch wire core (6), the outer wall of the shielding layer (4) is movably connected with an inner layer (7), the inner wall of the inner layer (7) is movably connected with a shell (8), the inner wall of the shell (8) is fixedly connected with a main wire core (9), the outer wall of the inner layer (7) is fixedly connected with a wrapping layer (10), the outer wall of the wrapping layer (10) is fixedly connected with a first filling layer (11), the outer wall of the first filling layer (11) is fixedly connected with a total shielding layer (12), and the outer wall of the, the outer wall fixedly connected with skin (14) of second filling layer (13), the inner wall fixedly connected with control sinle silk (15) of second filling layer (13), draw-in groove (16) have been seted up to the outer wall of skin (14), outer wall fixedly connected with fixture block (17) of control sinle silk (15).

2. A highly fire-resistant underground cable according to claim 1, wherein: the number of the insulating layers (2) is fifteen, every three insulating layers (2) form a group, the five groups of insulating layers (2) are arranged on the inner wall of the inner layer (7) at equal intervals, and the insulating layers (2) are cross-linked polyethylene insulating layers.

3. A highly fire-resistant underground cable according to claim 1, wherein: the fireproof layer (3) is a ceramic silicon rubber fireproof layer, and the shape and the size of the fireproof layer (3) are matched with those of the combination of the three insulating layers (2).

4. A highly fire-resistant underground cable according to claim 1, wherein: the inner layer (7) is a low-smoke halogen-free inner layer, and the isolation layer (5) is a ceramic silicon rubber isolation layer.

5. A highly fire-resistant underground cable according to claim 1, wherein: the shielding layer (12) is a regular hexagon shielding layer, the shape and the size of the shielding layer (12) are matched with those of the outer layer (14), the outer layer (14) is a polyolefin outer layer, the wrapping layer (10) is a polyurethane wrapping layer, and the first filling layer (11) and the second filling layer (13) are polyurethane foam filling layers.

6. A highly fire-resistant underground cable according to claim 1, wherein: the number of the control wire cores (15) is five, the five control wire cores (15) are arranged on the inner wall of the second filling layer (13) at equal intervals, and the combined diameter of the second filling layer (13) and the total shielding layer (12) is the same as that of the outer layer (14).

7. A highly fire-resistant underground cable according to claim 1, wherein: the control wire core (15) is connected with the clamping groove (16) through the clamping block (17), and the shape and the size of the clamping block (17) are matched with those of the clamping groove (16).