CN218069417U

CN218069417U - Fireproof anti-interference low-voltage cable

Info

Publication number: CN218069417U
Application number: CN202220831610.6U
Authority: CN
Inventors: 韩媛媛
Original assignee: Xinnuoda Cable Co ltd
Current assignee: Xinnuoda Cable Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-12-16
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses an anti-interference low tension cable of fire prevention belongs to cable technical field, include: the cable comprises a high flame-retardant outer sheath and a plurality of cable cores arranged on the inner side of the high flame-retardant outer sheath; the inner side of the high-flame-retardant outer sheath is connected with a ceramic fireproof layer in a laminating manner, the inner side of the ceramic fireproof layer is connected with a structural protective layer in a laminating manner, the inner side of the structural protective layer is connected with a woven mesh shielding layer in a laminating manner, the inner side of the woven mesh shielding layer is connected with an inner sheath in a laminating manner, and the inner side of the inner sheath is connected with an aluminum foil shielding layer in a laminating manner; a plurality of supporting seats are arranged between the cable cores, a plurality of separating frames are connected to the outer circumferential wall of each supporting seat, an arc-shaped plate is connected to the tail ends of the separating frames, and the outer arc-shaped wall of each arc-shaped plate is abutted to the inner side of the aluminum foil shielding layer. The fireproof anti-interference low-voltage cable is simple in structure and high in practicability.

Description

Fireproof anti-interference low-voltage cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to fire prevention anti-interference low tension cable.

Background

With the development of society and the progress of science and technology, a plurality of power plants, metallurgical enterprises and petroleum enterprises develop towards large-scale integration, high-rise buildings, public entertainment places, subways, underground streets and the like are continuously emerged, the power consumption is increased day by day, and the variety and the consumption of electric wires and cables are correspondingly increased. A general cable is once burned and cannot be electrified in case of an actual fire. However, in case of fire, many important occasions require that the cable be normally energized for a prescribed time in case of fire, such as evacuation of people, illumination of passageway, fire alarm, automatic fire fighting equipment and other emergency equipment. Therefore, people research fireproof cables, and the existing fireproof capacity of the cables cannot achieve the expected effect and cannot meet the use requirements of people.

Therefore, in order to meet the current situation, it is urgently needed to design and produce a fireproof anti-interference low-voltage cable so as to meet the requirement of practical use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-interference low tension cable of fire prevention to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a fire resistant, interference resistant low voltage cable comprising:

the high flame-retardant outer sheath and the plurality of cable cores are arranged on the inner side of the high flame-retardant outer sheath;

the inner side of the high-flame-retardant outer sheath is connected with a ceramic fireproof layer in a laminating manner, the inner side of the ceramic fireproof layer is connected with a structural protective layer in a laminating manner, the inner side of the structural protective layer is connected with a woven mesh shielding layer in a laminating manner, the inner side of the woven mesh shielding layer is connected with an inner sheath in a laminating manner, and the inner side of the inner sheath is connected with an aluminum foil shielding layer in a laminating manner;

a plurality of supporting seats are arranged between the cable cores, a plurality of separating frames are connected to the outer circumferential wall of each supporting seat, an arc-shaped plate is connected to the tail ends of the separating frames, and the outer arc-shaped wall of each arc-shaped plate is abutted to the inner side of the aluminum foil shielding layer.

In a further embodiment, the ceramic fireproof layer is made of a ceramic fiber material, and the structural protective layer is made of a silicon rubber material.

In a further embodiment, the number of the separating frames is six, and the six separating frames are distributed on the outer surface of the supporting seat at equal intervals.

In a further embodiment, a heat insulation layer is bonded on the outer surface of the cable core, and the heat insulation layer is a fire-resistant mica tape layer.

In a further embodiment, a flame-retardant filling layer is filled between the aluminum foil shielding layer and the supporting seat, and the flame-retardant filling layer is made of asbestos fibers.

In a further embodiment, the inner sheath is a PVC insulating sheath.

The utility model discloses a technological effect and advantage: according to the fireproof anti-interference low-voltage cable, the high-flame-retardant outer sheath, the ceramic fireproof layer and the structural protection layer have the fireproof and flame-retardant effects, the cable can be prevented from being ignited, and the heat insulation layer and the flame-retardant filling layer have the heat insulation and high-temperature-resistant effects, so that the structural damage in the cable is avoided;

the separating frame can separate a plurality of cable cores, the cable cores are prevented from being wound mutually to influence the using effect of the cable, and meanwhile, the arc-shaped plate, the separating frame and the supporting seat are used in a matched mode, so that the interior of the cable is supported, the bending resistance of the cable is improved, and the service life of the cable is prolonged;

aluminium foil shielding layer and braided net shielding layer combined action, it is better in the aspect of reducing the signal transmission loss and shielding external disturbance, this anti-interference low tension cable of fire prevention, simple structure, the practicality is strong.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is an enlarged view of the structure a in fig. 1 according to the present invention;

figure 3 is the utility model discloses a structural schematic of cable core.

In the figure: 1. a high flame retardant outer sheath; 2. an inner sheath; 3. ceramization of the fire-proof layer; 4. a structural protective layer; 5. an aluminum foil shielding layer; 6. a mesh grid shielding layer; 7. a supporting seat; 8. a partition frame; 9. an arc-shaped plate; 10. a flame retardant filler layer; 11. a cable core; 12. an insulating layer.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In order to meet the practical use requirement, please refer to fig. 1, fig. 2 and fig. 3, a fireproof anti-interference low-voltage cable includes: the cable comprises a high flame-retardant outer sheath 1 and a plurality of cable cores 11 arranged on the inner side of the high flame-retardant outer sheath 1; the inner side of the high-flame-retardant outer sheath 1 is connected with a ceramic fireproof layer 3 in an attaching mode, the inner side of the ceramic fireproof layer 3 is connected with a structural protection layer 4 in an attaching mode, the high-flame-retardant outer sheath 1, the ceramic fireproof layer 3 and the structural protection layer 4 have the fireproof and flame-retardant functions and can avoid cable ignition, the inner side of the structural protection layer 4 is connected with a woven mesh shielding layer 6 in an attaching mode, the inner side of the woven mesh shielding layer 6 is connected with an inner sheath 2 in an attaching mode, the inner sheath 2 is a PVC insulating sheath, the inner side of the inner sheath 2 is connected with an aluminum foil shielding layer 5 in an attaching mode, the ceramic fireproof layer 3 is made of ceramic fiber materials, and the structural protection layer 4 is made of silicon rubber materials; be provided with supporting seat 7 between a plurality of cable cores 11, be connected with a plurality of banks 8 on the circumference outer wall of supporting seat 7, the quantity of banks 8 is six, six banks 8 equidistant distribution are on the surface of supporting seat 7, and be connected with arc 9 on the end of banks 8, and the arc outer wall of arc 9 is inconsistent with 5 inboards of aluminium foil shielding layer, banks 8 and can separate several cable cores 11, avoid cable core 11 intertwine to influence the result of use of cable, simultaneously arc 9, the cooperation of banks 8 and supporting seat 7 is used, the inside support of cable, the bending resistance of cable has been improved.

Referring to fig. 1 and fig. 3, a thermal insulation layer 12 is bonded to an outer surface of a cable core 11, the thermal insulation layer 12 is a fire-resistant mica tape layer, a fire-retardant filling layer 10 is filled between an aluminum foil shielding layer 5 and a supporting base 7, the fire-retardant filling layer 10 is made of asbestos fiber, and the thermal insulation layer 12 and the fire-retardant filling layer 10 have the functions of thermal insulation and high temperature resistance, so that structural damage inside a cable is avoided.

According to the working principle, when the fireproof anti-interference low-voltage cable is used, the high-flame-retardant outer sheath 1, the ceramic fireproof layer 3 and the structure protective layer 4 have the fireproof and flame-retardant effects, so that the cable can be prevented from catching fire, and the heat insulation layer 12 and the flame-retardant filling layer 10 have the heat insulation and high-temperature resistance effects, so that the structure inside the cable is prevented from being damaged; the separating frame 8 can separate a plurality of cable cores 11, the cable cores 11 are prevented from being wound with each other to influence the using effect of the cable, meanwhile, the arc-shaped plate 9, the separating frame 8 and the supporting seat 7 are used in a matched mode, the interior of the cable is supported, the bending resistance of the cable is improved, and the service life of the cable is prolonged; the combined action of the aluminum foil shielding layer 5 and the woven mesh shielding layer 6 has better effect in the aspects of reducing signal transmission loss and shielding external interference.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A fire resistant, interference resistant low voltage cable comprising:

the cable comprises a high flame-retardant outer sheath (1) and a plurality of cable cores (11) arranged on the inner side of the high flame-retardant outer sheath (1);

the method is characterized in that: the inner side of the high-flame-retardant outer sheath (1) is connected with a ceramic fireproof layer (3) in an attaching mode, the inner side of the ceramic fireproof layer (3) is connected with a structural protective layer (4) in an attaching mode, the inner side of the structural protective layer (4) is connected with a woven mesh shielding layer (6) in an attaching mode, the inner side of the woven mesh shielding layer (6) is connected with an inner sheath (2) in an attaching mode, and the inner side of the inner sheath (2) is connected with an aluminum foil shielding layer (5) in an attaching mode;

a supporting seat (7) is arranged between the cable cores (11), a plurality of separating frames (8) are connected to the outer wall of the circumference of the supporting seat (7), an arc-shaped plate (9) is connected to the tail end of each separating frame (8), and the outer wall of the arc-shaped plate (9) is abutted to the inner side of the aluminum foil shielding layer (5).

2. The fire-proof anti-interference low-voltage cable according to claim 1, wherein: the ceramic fireproof layer (3) is made of ceramic fiber materials, and the structural protective layer (4) is made of silicon rubber materials.

3. The fire-proof anti-interference low-voltage cable according to claim 1, wherein: the number of the separating frames (8) is six, and the six separating frames (8) are distributed on the outer surface of the supporting seat (7) at equal intervals.

4. The fire-proof anti-interference low-voltage cable according to claim 1, wherein: the outer surface of the cable core (11) is bonded with a heat insulation layer (12), and the heat insulation layer (12) is a fire-resistant mica tape layer.

5. The fire-proof anti-interference low-voltage cable according to claim 1, wherein: and a flame-retardant filling layer (10) is filled between the aluminum foil shielding layer (5) and the supporting seat (7), and the flame-retardant filling layer (10) is made of asbestos fibers.

6. The fire-proof anti-interference low-voltage cable according to claim 1, wherein: the inner sheath (2) is a PVC insulating sheath.