CN217214203U

CN217214203U - Mineral-insulated halogen-free low-smoke flame-retardant cable

Info

Publication number: CN217214203U
Application number: CN202123246976.1U
Authority: CN
Inventors: 江明; 高红阳; 蒋俞飞; 陈小方
Original assignee: Wuxi Jiangnan Cable Co Ltd
Current assignee: Wuxi Jiangnan Cable Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-08-16
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a mineral insulation does not have steamed low cigarette flame retarded cable, including the thread core and set up the protection interlayer in the thread core outside, the outside of thread core is provided with first inoxidizing coating, the thread core is provided with at least three strands, three the thread core be the heliciform intertwine and constitute the line body, the protection interlayer sets up the outside at the line body, be provided with the filling layer between protection interlayer and the line body. The utility model discloses a set up first inoxidizing coating in the outside of thread core to being the spiral intertwine with a plurality of thread cores and making the line body, setting up the protection interlayer in the outside of the line body, and set up the second inoxidizing coating in the outside of protection interlayer, adopting first insulation layer, second flame retardant coating with first inoxidizing coating and constituting, thereby adopting protective coat, insulating inlayer constitution with the second inoxidizing coating, thereby combine to set up flame retardant coating, the first inoxidizing coating between first inoxidizing coating and second inoxidizing coating and improve holistic flame retardant properties greatly.

Description

Mineral-insulated halogen-free low-smoke flame-retardant cable

Technical Field

The utility model relates to a relevant technical field of cable specifically is a mineral insulation does not have steamed low cigarette flame retarded cable.

Background

The low-smoke halogen-free flame-retardant cable has the characteristics of low smoke, no halogen, flame retardance, low toxicity and the like, so that the cable does not generate harmful gas and dense smoke once a fire disaster happens, precious disaster relief time and capacity are strived for, and casualties and property loss caused by the fire disaster are reduced, therefore, the cable is widely used in important public places such as high-rise buildings, hospitals, markets and the like.

The existing low-smoke halogen-free electric wire is poor in flame retardant effect, when a fire disaster occurs, the cable is flammable, the fire behavior can be increased, the rescue efficiency is influenced, and serious economic loss can be caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mineral insulation does not have steamed low cigarette flame retarded cable 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: the utility model provides a mineral insulation does not have steamed low cigarette flame retarded cable, includes the thread core and sets up the protection interlayer in the thread core outside, the outside of thread core is provided with first inoxidizing coating, the thread core is provided with at least three strands, three the thread core be the heliciform intertwine and constitute the line body, the protection interlayer sets up the outside at the line body, be provided with the filling layer between protection interlayer and the line body, the protection interlayer includes shielding layer, low smoke and zero halogen around covering, fire-retardant layer and first flame retardant coating, shielding layer, low smoke and zero halogen are around covering, fire-retardant layer and first flame retardant coating from interior to exterior in proper order the outside at the line body, the outside of protection interlayer is provided with the second inoxidizing coating.

In a further preferred embodiment of the present invention, the first protective layer is composed of a first insulating layer and a second fireproof layer, the first insulating layer is disposed on an outer surface of the main core, and the second fireproof layer is disposed on an outer side of the first insulating layer.

As a further preferred aspect of the present technical solution, the second protective layer includes a protective outer sleeve and an insulating inner layer, the insulating inner layer is disposed on the outer side of the first fireproof layer, and the protective outer sleeve is disposed on the outer side of the first fireproof layer.

As further preferred of this technical scheme, still be provided with stretch-proofing structure in the protection interlayer, stretch-proofing structure comprises a plurality of stretch-proofing sinle silks, a plurality of first mounting grooves have been seted up on the outside surface of shielding layer, a plurality of second mounting grooves have been seted up around the inboard surface of covering to low smoke and zero halogen, first mounting groove is corresponding with the second mounting groove, just first mounting groove, second mounting groove mutually support and form the installation cavity, and a plurality of stretch-proofing sinle silks set up inside the installation cavity.

As a further preferred aspect of the present technical solution, the filling layer is specifically made of fire-retardant particles, and the fire-retardant particles are filled in the inner cavity of the protective interlayer and tightly attached to the outer wall of the first protective layer.

As a further preferable mode of the present invention, the outer surface of the protective outer jacket is coated with a corrosion-resistant coating.

As a further preferable mode of the technical scheme, the main wire core and the stretch-proof wire core are formed by twisting a plurality of strands of monofilaments.

The utility model provides a mineral insulation does not have steamed low cigarette flame retarded cable, possesses following beneficial effect:

(1) the utility model discloses a set up first inoxidizing coating in the outside of thread core to being the spiral intertwine with a plurality of thread cores and making the line body, setting up the protection interlayer in the outside of the line body, and set up the second inoxidizing coating in the outside of protection interlayer, adopting first insulation layer, second flame retardant coating with first inoxidizing coating and constituting, thereby adopting protective coat, insulating inlayer constitution with the second inoxidizing coating, thereby combine to set up flame retardant coating, the first inoxidizing coating between first inoxidizing coating and second inoxidizing coating and improve holistic flame retardant properties greatly.

(2) The utility model discloses a set up the stretch-proofing structure, seted up a plurality of first mounting grooves on the outside surface of shielding layer, seted up a plurality of second mounting grooves on low smoke and zero halogen around the inboard surface of covering, mutually support first mounting groove, second mounting groove and form the installation cavity to with a plurality of stretch-proofing sinle silks setting inside the installation cavity, promote the holistic stretch-proofing performance of cable greatly through many stretch-proofing sinle silks.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of a first protective layer according to the present invention;

fig. 3 is a schematic structural diagram of a second protective layer according to the present invention;

fig. 4 is a schematic structural view of the stretch-resistant structure of the present invention.

In the figure: 1. a main wire core; 2. a first protective layer; 3. a filling layer; 4. a shielding layer; 5. a low-smoke halogen-free wrapping layer; 6. a flame retardant layer; 7. a first fire-resistant layer; 8. a second protective layer; 9. a first insulating layer; 10. a second fire-resistant layer; 11. a protective outer sleeve; 12. an insulating inner layer; 13. a tensile core; 14. a first mounting groove; 15. a second mounting groove; 16. a corrosion-resistant coating.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a technical scheme: the utility model provides a mineral insulation does not have steamed low cigarette flame retarded cable, includes the sinle silk 1 and sets up the protection interlayer in the sinle silk 1 outside, the outside of sinle silk 1 is provided with first inoxidizing coating 2, sinle silk 1 is at least three strands, three the sinle silk 1 be the heliciform intertwine and constitute the line body, the protection interlayer sets up the outside at the line body, be provided with filling layer 3 between protection interlayer and the line body, the protection interlayer includes shielding layer 4, low smoke and zero halogen around covering 5, fire-retardant layer 6 and first flame retardant coating 7, shielding layer 4, low smoke and zero halogen are around covering 5, fire-retardant layer 6 and first flame retardant coating 7 from interior to exterior in proper order the outside at the line body, the outside of protection interlayer is provided with second inoxidizing coating 8.

In this embodiment, specifically: first inoxidizing coating 2 comprises first insulating layer 9, second flame retardant coating 10, first insulating layer 9 sets up on the outside surface of main line core 1, second flame retardant coating 10 sets up in the outside of first insulating layer 9.

In this embodiment, specifically: the second protective layer 8 comprises a protective outer sleeve 11 and an insulating inner layer 12, the insulating inner layer 12 is arranged on the outer side of the first fireproof layer 7, and the protective outer sleeve is arranged on the outer side of the first fireproof layer 7.

In this embodiment, specifically: still be provided with stretch-proofing structure in the protection interlayer, stretch-proofing structure comprises a plurality of stretch-proofing sinle silk 13, a plurality of first mounting grooves 14 have been seted up on the outside surface of shielding layer 4, a plurality of second mounting grooves 15 have been seted up around the inboard surface of covering 5 to low smoke and zero halogen, first mounting groove 14 is corresponding with second mounting groove 15, just first mounting groove 14, second mounting groove 15 mutually support and form the installation cavity, and a plurality of stretch-proofing sinle silk 13 set up inside the installation cavity.

In this embodiment, specifically: the filling layer 3 is specifically made of flame-retardant fireproof particles, and the flame-retardant fireproof particles are filled in the inner cavity of the protective interlayer and tightly attached to the outer wall of the first protective layer 2.

In this embodiment, specifically: the outer surface of the protective casing 11 is coated with a corrosion resistant coating 16.

In this embodiment, specifically: the main wire core 1 and the stretch-proof wire core 13 are formed by twisting a plurality of strands of monofilaments.

Theory of operation, when using, through setting up first inoxidizing coating 2 in the outside of thread core 1, and be the spiral intertwine with a plurality of thread cores 1 and make the line body, the outside at the line body sets up the protection interlayer, and set up second inoxidizing coating 8 in the outside of protection interlayer, adopt first insulation layer 9 with first inoxidizing coating 2, second flame retardant coating 10 constitutes, adopt protective sheath 11 with second inoxidizing coating 8, insulating inlayer 12 constitutes, combine to set up flame retardant coating 6 between first inoxidizing coating 2 and second inoxidizing coating 8, thereby first inoxidizing coating 7 improves holistic fire behaviour greatly, thereby simultaneously through setting up at low smoke and zero halogen around covering 5, thereby ensure when the conflagration breaing out, can not produce a large amount of poisonous flue gas, reduce the harm to personnel, and further, through setting up stretch-proofing structure, thereby the holistic stretch-proofing performance of great promotion cable.

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 mineral insulation halogen-free low-smoke flame-retardant cable is characterized in that: including the thread core (1) and set up the protection interlayer in the thread core (1) outside, the outside of thread core (1) is provided with first inoxidizing coating (2), thread core (1) is provided with at least three strands, three the thread core (1) be the heliciform intertwine and constitute the line body, the protection interlayer sets up the outside at the line body, be provided with filling layer (3) between protection interlayer and the line body, the protection interlayer includes shielding layer (4), low smoke and zero halogen around covering (5), fire-retardant layer (6) and first flame retardant coating (7), shielding layer (4), low smoke and zero halogen are around covering (5), fire-retardant layer (6) and first flame retardant coating (7) from interior to exterior in proper order the outside at the line body, the outside of protection interlayer is provided with second inoxidizing coating (8).

2. The mineral insulated halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: first inoxidizing coating (2) comprise first insulating layer (9), second flame retardant coating (10), first insulating layer (9) set up the outside surface at sinle silk (1), second flame retardant coating (10) set up the outside at first insulating layer (9).

3. The mineral insulation halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: the second protective layer (8) comprises a protective outer sleeve (11) and an insulating inner layer (12), the insulating inner layer (12) is arranged on the outer side of the first fireproof layer (7), and the protective outer sleeve is arranged on the outer side of the first fireproof layer (7).

4. The mineral insulation halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: still be provided with the stretch-proofing structure in the protection interlayer, the stretch-proofing structure comprises a plurality of stretch-proofing sinle silk (13), a plurality of first mounting groove (14) have been seted up on the outside surface of shielding layer (4), a plurality of second mounting groove (15) have been seted up around the inboard surface of covering (5) to low smoke and zero halogen, first mounting groove (14) are corresponding with second mounting groove (15), just first mounting groove (14), second mounting groove (15) mutually support and form the installation cavity, and a plurality of stretch-proofing sinle silk (13) set up inside the installation cavity.

5. The mineral insulation halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: the filling layer (3) is made of flame-retardant fireproof particles, and the flame-retardant fireproof particles are filled in the inner cavity of the protective interlayer and tightly attached to the outer wall of the first protective layer (2).

6. A mineral insulated halogen-free low smoke flame retardant cable according to claim 3, characterized in that: the outer side surface of the protective outer sleeve (11) is coated with a corrosion-resistant coating (16).

7. The mineral insulation halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: the main wire core (1) and the stretch-resistant wire core (13) are formed by twisting a plurality of strands of monofilaments.