CN215450996U

CN215450996U - Double-flame-retardant power cable

Info

Publication number: CN215450996U
Application number: CN202122292059.0U
Authority: CN
Inventors: 陈同献
Original assignee: Kunming Oujie Cable Manufacturing Co ltd
Current assignee: Kunming Oujie Cable Manufacturing Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-01-07
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a double-flame-retardant power cable which comprises an outer protective layer, a second armor layer and a third armor layer, wherein a first armor layer is arranged on the inner side of the outer protective layer, a sealing object is filled between the second armor layer and the first armor layer, a plurality of groups of supporting blocks are equidistantly connected to the inner side of the second armor layer, empty grooves are formed in the inner sides of the supporting blocks, the third armor layer is positioned on the inner side of the second armor layer, a fireproof material is filled between the third armor layer and the second armor layer, cable cores are arranged on the inner side of the third armor layer, outer cladding layers are arranged outside the cable cores, one sides of the outer cladding layers are respectively connected with positioning blocks, supporting plates are arranged between the outer cladding layers on the two sides, positioning grooves are respectively formed in the two sides of the supporting plates, and the positioning blocks are connected into the positioning grooves in a sliding mode; the utility model changes the existing combustion-supporting cable structure, achieves the effect of strengthening the integral strength, strengthens the flame-retardant effect from outside to inside, and further prolongs the service life of the cable.

Description

Double-flame-retardant power cable

Technical Field

The utility model relates to the technical field of power cables, in particular to a double-flame-retardant power cable.

Background

The power cable is used for transmitting and distributing electric energy, 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. In the power lines, the cable is increasing in specific gravity. The flame-retardant cable is one of cables, however, the existing flame-retardant cable has a single structure and a poor flame-retardant effect, and therefore, a double-flame-retardant power cable is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-flame-retardant power cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a two fire-retardant type power cable, includes outer jacket, second armor, third armor, the inboard of outer jacket is equipped with first armor, it has the sealed thing to fill between second armor and the first armor, the inboard equidistance of second armor is connected with a plurality of groups supporting shoe, the inboard of supporting shoe is equipped with the dead slot, the third armor is located the inboard of second armor, it has the fire prevention material to fill between third armor and the second armor, the inboard of third armor is equipped with cable core, cable core's outside is equipped with the surrounding layer, one side of surrounding layer is connected with the locating piece respectively, both sides be equipped with the backup pad between the surrounding layer, the backup pad both sides are equipped with the constant head tank respectively, the locating piece slips to the constant head tank in.

As a further optimization of the technical scheme, the sealing material is a fireproof mica wrapping tape filler to play a fireproof role.

As a further optimization of the technical scheme, the inner side of the supporting block is positioned in the empty groove and is connected with the supporting frame to play a supporting role.

As a further optimization of the technical scheme, the fireproof material is a silicate fireproof material, and has a fireproof function.

As a further optimization of the technical scheme, one side of the upper supporting plate and one side of the lower supporting plate are respectively connected with a vertical plate, one end of each vertical plate is connected to a third armor layer, the supporting plates are at least three groups, and the supporting stability is good.

As a further optimization of the technical scheme, a gap between the cable core and the third armor layer is filled with fireproof materials, so that the fireproof effect is achieved.

Compared with the prior art, the utility model has the beneficial effects that: the utility model changes the existing combustion-supporting cable structure, achieves the effect of strengthening the overall strength, has flame-retardant effect and good deformation resistance through the arranged outer protective layer, the first armor layer, the second armor layer and the third armor layer, has better flame-retardant effect inside through the arranged fireproof materials, sealing materials and fireproof materials, has the functions of resisting drawing and deformation of the cable core through the supporting plate, is connected with the cable core through the positioning groove and the positioning block, can be detached and replaced by the supporting plate, has the function of strengthening and supporting through the arrangement of the vertical plate, further has good structural stability of the overall cable, strengthens the supporting and flame-retardant effects from outside to inside, and further prolongs the service life of the cable.

Drawings

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

FIG. 2 is a schematic view of the connection between the supporting plate and the outer cover according to the present invention;

FIG. 3 is a schematic view of the support block structure of the present invention.

In the figure: 1. an outer jacket; 2. a first armor layer; 3. a seal; 4. a second armor layer; 5. a support block; 6. a support frame; 7. a third armor layer; 8. a cable core; 9. a fire-resistant material; 10. fire-proof materials; 11. an outer cladding; 12. a support plate; 13. positioning blocks; 14. positioning a groove; 17. a riser.

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.

In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or state relationships based on the orientations or state relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that a referred mechanism or component must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a double-flame-retardant power cable comprises an outer protective layer 1, a second armor layer 4 and a third armor layer 7, wherein a first armor layer 2 is arranged on the inner side of the outer protective layer 1, a sealing object 3 is filled between the second armor layer 4 and the first armor layer 2, the sealing object 3 is a fireproof mica wrapping tape filler, a plurality of groups of supporting blocks 5 are equidistantly connected to the inner side of the second armor layer 4, empty grooves are formed in the inner sides of the supporting blocks 5, supporting frames 6 are connected to the inner sides of the supporting blocks 5 in the empty grooves, the third armor layer 7 is arranged on the inner side of the second armor layer 4, a fireproof material 10 is filled between the third armor layer 7 and the second armor layer 4, the fireproof material 10 is a silicate fireproof material, a cable core 8 is arranged on the inner side of the third armor layer 7, and a fireproof material 9 is filled in a gap between the cable core 8 and the third armor layer 7, the cable core 8 is provided with an outer cladding layer 11 on the outside, one side of the outer cladding layer 11 is connected with a positioning block 13, a supporting plate 12 is arranged between the outer cladding layers 11 on two sides, one side of the upper supporting plate 12 and one side of the lower supporting plate 12 are connected with a vertical plate 17, one end of the vertical plate 17 is connected to a third armor layer 7, the supporting plate 12 is at least provided with three groups, positioning grooves 14 are arranged on two sides of the supporting plate 12, and the positioning block 13 is connected to the positioning grooves 14 in a sliding mode.

A cable is typically a rope-like cable made up of several or groups of at least two twisted conductors, each group being insulated from each other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. Firstly, a conductive wire core: made of a high conductivity material (copper or aluminum). Each core may be formed by twisting a single wire or a plurality of wires according to the requirement of laying and using conditions on the flexibility degree of the cable. Insulating layer: the insulating material used as the cable should have high insulation resistance, high breakdown field strength, low dielectric loss and low dielectric constant. Common insulating materials used in cables are oil-impregnated paper, polyvinyl chloride, polyethylene, crosslinked polyethylene, rubber, and the like. Cables are often classified as insulating materials, such as oil impregnated paper insulated cables, polyvinyl chloride cables, crosslinked polyethylene cables, and the like. Sealing the sheath: protecting the insulated wire core from mechanical, moisture, humidity, chemicals, light, etc. For moisture-sensitive insulation, a lead or aluminum extrusion seal jacket is generally used. Protecting the covering layer: to protect the sealing boot from mechanical damage. Galvanized steel strips, steel wires or copper strips, copper wires and the like are generally used as armor to wrap the armor outside a sheath (called an armored cable), and the armor layer simultaneously plays the roles of shielding an electric field and preventing external electromagnetic wave interference. The cable is mostly applied to dense areas of population and power grids and places with crowded and busy traffic; when the cable is laid in the river, the river and the seabed, the use of large-span overhead lines can be avoided.

Specific, during the use, outer jacket 1 through setting up, first armor 2, second armor 4, third armor 7, play the effect of strengthening bulk strength, the anti deformability is good, through the fire prevention material 10 that is equipped with, sealing 3, fire-proof material 9, play better fire-resistant effect in inside, play the anti tractive of cable core 8 through backup pad 12, the effect of resistance to deformation, still through constant head tank 14 between backup pad 12 and the cable core 8, locating piece 13 is connected, make backup pad 12 can dismantle the change, the effect of strengthening the support is played in the setting of riser 17, and then make whole cable structure stability good, possess multilayer flame retardant function.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two fire-retardant type power cable, includes outer jacket (1), second armor (4), third armor (7), its characterized in that: the inner side of the outer protective layer (1) is provided with a first armor layer (2), a sealing object (3) is filled between the second armor layer (4) and the first armor layer (2), a plurality of groups of supporting blocks (5) are connected to the inner side of the second armor layer (4) at equal intervals, empty grooves are formed in the inner sides of the supporting blocks (5), the third armor layer (7) is located on the inner side of the second armor layer (4), a fireproof material (10) is filled between the third armor layer (7) and the second armor layer (4), cable cores (8) are arranged on the inner side of the third armor layer (7), outer wrapping layers (11) are arranged outside the cable cores (8), one side of each outer wrapping layer (11) is connected with a positioning block (13), supporting plates (12) are arranged between the outer wrapping layers (11) on two sides, positioning grooves (14) are arranged on two sides of each supporting plate (12), the positioning block (13) is connected to the positioning groove (14) in a sliding mode.

2. The double flame retardant power cable according to claim 1, characterized in that: the sealing material (3) is a refractory mica wrapping tape filler.

3. The double flame retardant power cable according to claim 1, characterized in that: the inner side of the supporting block (5) is positioned in the empty groove and is connected with a supporting frame (6).

4. The double flame retardant power cable according to claim 1, characterized in that: the fireproof material (10) is a silicate fireproof material.

5. The double flame retardant power cable according to claim 1, characterized in that: one side of the upper supporting plate (12) and the lower supporting plate (12) are respectively connected with a vertical plate (17), one end of each vertical plate (17) is connected to the third armor layer (7), and the supporting plates (12) are at least arranged in three groups.

6. The double flame retardant power cable according to claim 1, characterized in that: and a gap between the cable core (8) and the third armor layer (7) is filled with a fireproof material (9).