CN220856156U

CN220856156U - Flame-retardant cable

Info

Publication number: CN220856156U
Application number: CN202322209815.8U
Authority: CN
Inventors: 缪玲玲; 缪中运; 郑丽美
Original assignee: Zhejiang Tongying Cable Technology Co ltd
Current assignee: Zhejiang Tongying Cable Technology Co ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-04-26
Anticipated expiration: 2033-08-16

Abstract

The utility model relates to a flame-retardant cable, which comprises a plurality of cable cores and a wrapping layer wrapping the cable cores, wherein the wrapping layer sequentially comprises a buffer protection layer, a shielding layer, a flame-retardant outer layer and a flame-retardant filling layer from outside to inside, and the outermost layer of the cable core is wrapped with a flame-retardant inner layer; the buffer protection layer is internally provided with a plurality of buffer holes in a circumferential array, the outer wall of the buffer protection layer is provided with a plurality of flanges in a circumferential array, and the buffer holes and the flanges extend along the length direction of the cable; the flame-retardant filling layer is filled between the flame-retardant outer layer and the flame-retardant inner layer. The buffer protection layer can improve the buffer protection performance of the cable and the compression resistance and fracture resistance of the cable by arranging the buffer holes and the flanges, and in addition, the flame-retardant inner layer, the flame-retardant outer layer and the flame-retardant filling layer between the cable core and the wrapping layer are excessive, so that the flame-retardant performance of the cable is greatly improved.

Description

Flame-retardant cable

Technical Field

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

Background

The cable is a conductor comprising one or more insulated wire cores and a coating layer outside the insulated wire cores, and has the characteristics of internal electrification and external insulation, and is widely applied to the fields of electric power systems, information transmission systems, mechanical instrument systems and the like.

With the development of technology, people have more and more demands on cables, and the use environments of the cables are more and more, and under some special environments, the working temperature is higher because the cables are required to have higher high-temperature resistance. The outermost layer of the existing cable mostly adopts an insulating sleeve, the structure of the cable is a cylindrical sleeve structure with smooth appearance, the buffer protection effect of the cable is limited, in addition, the existing cable is only simple and accords with a flame-retardant layer, the flame-retardant effect of the cable is poor, and any improvement space is provided.

Disclosure of utility model

Aiming at the defects in the background technology, the utility model provides a flame-retardant cable.

The technical scheme adopted by the utility model is as follows: the flame-retardant cable comprises a plurality of cable cores and a wrapping layer wrapping the cable cores, wherein the wrapping layer sequentially comprises a buffer protection layer, a shielding layer, a flame-retardant outer layer and a flame-retardant filling layer from outside to inside, and the outermost layer of the cable core is wrapped with a flame-retardant inner layer;

the buffer protection layer is internally provided with a plurality of buffer holes in a circumferential array, the outer wall of the buffer protection layer is provided with a plurality of flanges in a circumferential array, and the buffer holes and the flanges extend along the length direction of the cable;

The flame-retardant filling layer is filled between the flame-retardant outer layer and the flame-retardant inner layer.

Further, the buffer protection layer is made of an elastic insulating material.

Further, the flame-retardant outer layer is low-smoke halogen-free polyethylene.

Further, a buffer air cavity is arranged on the buffer protection layer positioned on the inner side of the flange.

Further, the buffer air cavity is of an oval structure.

Further, the cable core sequentially comprises a conductor, a ceramic silicon rubber insulating layer and a flame-retardant inner layer from inside to outside.

Further, the flame-retardant filling layer is made of flame-retardant glass fiber.

The beneficial effects of the utility model are as follows: the buffer protection layer can improve the buffer protection performance of the cable and the compression resistance and fracture resistance of the cable by arranging the buffer holes and the flanges, and in addition, the flame-retardant inner layer, the flame-retardant outer layer and the flame-retardant filling layer between the cable core and the wrapping layer are excessive, so that the flame-retardant performance of the cable is greatly improved.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages.

The utility model will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 1: 1. a buffer protection layer; 2. a shielding layer; 3. a flame retardant outer layer; 4. a flame retardant filler layer; 5. a flame retardant inner layer; 6. buffering holes; 7. a flange; 8. a buffer air cavity; 9. a conductor; 10. and a ceramic silicon rubber insulating layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

The utility model provides a flame-retardant cable.

In this embodiment, referring to fig. 1, the flame-retardant cable includes a plurality of cable cores and a wrapping layer wrapping the cable cores, the wrapping layer sequentially includes a buffer protection layer 1, a shielding layer 2, a flame-retardant outer layer 3 and a flame-retardant filling layer 4 from outside to inside, and the outermost layer of the cable core is wrapped with a flame-retardant inner layer 5;

A plurality of buffer holes 6 are formed in the inner circumferential array of the buffer protection layer, a plurality of flanges 7 are formed in the outer wall of the buffer protection layer in a circumferential array, and the buffer holes and the flanges extend along the length direction of the cable;

According to the technical scheme, the buffer protection layer is provided with the buffer holes and the flanges, so that the buffer protection performance of the cable can be improved, the compression resistance and fracture resistance of the cable are improved, in addition, the flame retardant inner layer, the flame retardant outer layer and the flame retardant filling layer between the cable core and the wrapping layer are excessive, and the flame retardant performance of the cable is greatly improved.

Specifically, the buffer protection layer is made of an elastic insulating material; the flame-retardant outer layer is low-smoke halogen-free polyethylene.

Specifically, a buffer air cavity 8 is arranged on the buffer protection layer positioned at the inner side of the flange; the buffer air cavity is of an oval structure.

In the technical scheme, the buffer air cavity is arranged to further improve the buffer elastic effect of the buffer protection layer.

Specifically, the cable core sequentially comprises a conductor 9, a ceramic silicon rubber insulating layer 10 and a flame-retardant inner layer from inside to outside; the flame-retardant filling layer is made of fire-resistant glass fiber.

The ceramic silicon rubber insulating layer and the flame-retardant inner layer are added on the outer layer of the cable core, so that the insulating performance is ensured, and the flame-retardant effect is ensured. The fire-retardant filling layer is filled by fire-resistant glass fiber, and the fire-resistant glass fiber has good fire-retardant effect.

The skilled person will know: while the utility model has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the utility model, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.

Claims

1. The utility model provides a fire-retardant cable, includes many cable cores and wraps up the parcel layer including many cable cores, its characterized in that: the wrapping layer sequentially comprises a buffer protection layer, a shielding layer, a flame-retardant outer layer and a flame-retardant filling layer from outside to inside, and the outermost layer of the cable core is wrapped with a flame-retardant inner layer;

2. The flame retardant cable of claim 1, wherein: the buffer protection layer is made of an elastic insulating material.

3. The flame retardant cable of claim 1, wherein: the flame-retardant outer layer is low-smoke halogen-free polyethylene.

4. The flame retardant cable of claim 1, wherein: and a buffer air cavity is arranged on the buffer protection layer positioned on the inner side of the flange.

5. The flame retardant cable of claim 4, wherein: the buffer air cavity is of an oval structure.

6. The flame retardant cable of claim 5, wherein: the cable core sequentially comprises a conductor, a ceramic silicon rubber insulating layer and a flame-retardant inner layer from inside to outside.

7. The flame retardant cable of claim 2, wherein: the flame-retardant filling layer is made of fire-resistant glass fiber.