CN219575225U

CN219575225U - Fireproof cable

Info

Publication number: CN219575225U
Application number: CN202320459998.6U
Authority: CN
Inventors: 王筱卿
Original assignee: Shanghai Xinyi Special Cable Co ltd
Current assignee: Shanghai Xinyi Special Cable Co ltd
Priority date: 2023-03-13
Filing date: 2023-03-13
Publication date: 2023-08-22
Anticipated expiration: 2033-03-13

Abstract

The utility model relates to the technical field of wires and cables, and provides a fireproof cable which comprises a buffer support, a fireproof power wire core, a plurality of fireproof control wire cores, a first isolation layer and a second isolation layer, wherein the buffer support comprises a support inner layer and a support outer layer, the support outer layer is formed by integrally connecting a plurality of arc surfaces which are circumferentially distributed on the outer side of the support inner layer and protrude outwards, the support inner layer and the support outer layer are integrally connected through a plurality of support walls, a plurality of buffer isolation protruding parts are circumferentially distributed on the inner side of the support outer layer, the fireproof power wire core is coaxially arranged on the inner side of the support inner layer, a plurality of fireproof control wire cores are circumferentially distributed in a gap between the support inner layer and the fireproof power wire core, and the first isolation layer and the second isolation layer are sequentially coated on the outer side of the buffer support from inside to outside. The utility model can improve the stability of the whole structure of the cable and the bending property of the cable while ensuring the fireproof safety performance of the cable, so that the cable is suitable for a narrower installation and laying space.

Description

Fireproof cable

Technical Field

The utility model relates to the technical field of wires and cables, in particular to a fireproof cable.

Background

Along with the continuous improvement of people's safety consciousness, fireproof cables are increasingly widely applied in various fields. The improvement of the high temperature resistance and the fireproof performance of the fireproof cable is an important content of research in the field. In practical application, through structural design and material selection, improvement fireproof cable's comprehensive mechanical properties also has the vital influence to its whole application, and on the one hand fireproof cable's overall structure design needs to guarantee that it satisfies the requirement of fire prevention security performance, and on the other hand the finished cable size and the pliability that obtain by structural design and material selection have the decision influence to whether it can be applicable to specific installation laying space. In particular, as the trend of integration of application ends becomes more and more obvious, the fireproof cable needs to face more and more complex installation and laying scenes.

Therefore, how to improve the flexibility of the fireproof cable while guaranteeing the fireproof safety performance has important significance for improving the scene application matching degree of the fireproof cable.

Disclosure of Invention

In view of the above, the present utility model aims to overcome the defects of the prior art and provide a fireproof cable.

The utility model provides a fireproof cable which comprises a buffer support, a fireproof power wire core, a plurality of fireproof control wire cores, a first isolation layer and a second isolation layer, wherein the buffer support comprises a support inner layer and a support outer layer, the support outer layer is formed by integrally connecting a plurality of arc surfaces which are circumferentially distributed on the outer side of the support inner layer and protrude outwards, the support inner layer and the support outer layer are integrally connected through a plurality of support walls, a plurality of buffer isolation protruding parts are circumferentially distributed on the inner side of the support outer layer, the fireproof power wire cores are coaxially arranged on the inner side of the support inner layer, a plurality of fireproof control wire cores are circumferentially distributed in a gap between the support inner layer and the fireproof power wire cores, and the first isolation layer and the second isolation layer are sequentially coated on the outer side of the buffer support from inside to outside.

Further, according to the fireproof cable disclosed by the utility model, the circumference of the supporting wall is uniformly distributed between the inner layer and the outer layer of the support, one end of the supporting wall is integrally connected with the inner layer of the support, and the other end of the supporting wall is integrally connected with the outer layer of the support.

Further, according to the fireproof cable disclosed by the utility model, one end of the supporting wall is integrally connected with the joint of two adjacent arc surfaces on the outer layer of the support.

Further, according to the fireproof cable disclosed by the utility model, the buffer isolation protruding parts are arranged on the inner sides of the arc surfaces of the outer layer of the support in a one-to-one correspondence manner, one end of each buffer isolation protruding part is integrally connected with the outer layer of the support, and the section of the other end of each buffer isolation protruding part is circular.

Further, in the fireproof cable, the inner side of the buffering isolation protruding part is provided with the first buffering channel, the section of the first buffering channel is elliptical, and an extension line of the inner side of the long axial direction of the ellipse passes through the axle center of the inner layer of the bracket.

Further, the fireproof cable comprises a plurality of fireproof signal wire cores, the plurality of fireproof signal wire cores are arranged in gaps between the outer layer of the support and the inner layer of the support and positioned at two sides of the buffer isolation protruding part in a one-to-one correspondence mode, and each fireproof signal wire core consists of a signal wire core conductor and a signal wire core insulating layer coated on the outer side of the signal wire core conductor.

Further, the fireproof cable of the utility model further comprises a plurality of buffer tubes, the buffer tubes are arranged in gaps between the joints of two adjacent circular arc surfaces on the outer layer of the support and the first isolation layer in a one-to-one correspondence mode, and the inner sides of the buffer tubes are coaxially provided with second buffer channels with circular sections.

Further, the fireproof cable comprises a power wire core conductor, and a power wire core first insulating layer and a power wire core second insulating layer which are sequentially coated on the outer side of the power wire core conductor.

Further, the fireproof cable comprises a control wire core conductor, and a control wire core first insulating layer and a control wire core second insulating layer which are sequentially coated on the outer side of the control wire core conductor.

Further, the fireproof cable is characterized in that the first isolation layer is made of aluminum, aluminum alloy, copper or copper alloy strips, and the second isolation layer is made of low-smoke halogen-free flame-retardant polyolefin materials.

According to the fireproof cable, through the comprehensive structural design, the fireproof power wire core and the fireproof control wire core are arranged on the inner side of the buffer support, the fireproof signal wire core is arranged in the gap between the outer layer of the support and the inner layer of the support and positioned on two sides of the buffer isolation protruding part, the first isolation layer and the second isolation layer are arranged on the outer side of the buffer support, the buffer tube is arranged in the gap between the joint of two adjacent circular arc surfaces on the outer layer of the support and the first isolation layer, the fireproof safety performance of the cable is ensured, the stability of the overall structure of the cable is improved, the bending performance of the cable is improved, and the cable is suitable for narrower installation and laying spaces.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a fireproof cable according to an exemplary first embodiment of the present utility model.

Fig. 2 is a schematic structural view of a buffer bracket of a fireproof cable according to an exemplary first embodiment of the present utility model.

Fig. 3 is a schematic structural view of a fireproof cable according to a second exemplary embodiment of the present utility model.

In the figure, 1-buffer support, 2-fire-proof power wire core, 3-fire-proof control wire core, 4-fire-proof signal wire core, 5-buffer tube, 6-first isolation layer, 7-second isolation layer, 11-support inner layer, 12-support outer layer, 13-support wall, 14-buffer isolation protrusion, 15-first buffer channel, 21-power wire core conductor, 22-power wire core first insulation layer, 23-power wire core second insulation layer, 31-control wire core conductor, 32-control wire core first insulation layer, 33-control wire core second insulation layer, 41-signal wire core conductor, 42-signal wire core insulation layer, 51-second buffer channel.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, an exemplary first embodiment of the present utility model provides a fireproof cable including a buffer bracket 1, a fireproof power core 2, a plurality of fireproof control cores 3, a first insulation layer 6, and a second insulation layer 7.

Specifically, as shown in fig. 2, the cushioning stent 1 includes a stent inner layer 11 and a stent outer layer 12, the stent outer layer 12 is formed by integrally connecting a plurality of circular arc surfaces which are circumferentially distributed at the outer side of the stent inner layer 11 and protrude outwards, the stent inner layer 11 and the stent outer layer 12 are integrally connected through a plurality of supporting walls 13, and a plurality of cushioning isolation protrusions 14 are circumferentially distributed at the inner side of the stent outer layer 12.

The circumference of the supporting wall 13 is uniformly distributed between the inner bracket layer 11 and the outer bracket layer 12, one end of the supporting wall 13 is integrally connected with the inner bracket layer 11, and the other end of the supporting wall 13 is integrally connected with the outer bracket layer 12. In order to further improve the stability of the cushioning bracket 1, one end of the supporting wall 13 is integrally connected with the connecting part of two adjacent arc surfaces on the outer layer 12 of the bracket.

The plurality of buffer isolation protrusions 14 are arranged inside the plurality of arc surfaces of the outer bracket layer 12 in a one-to-one correspondence manner, one end of each buffer isolation protrusion 14 is integrally connected with the outer bracket layer 12, and the cross section of the other end of each buffer isolation protrusion 14 is circular. When the cushioning stent 1 is bent or twisted by an external force, the rounded end of the cushioning isolation protrusion 14 contacts the inner stent layer 11, thereby supporting the outer stent layer 12.

In order to further improve the cushioning performance of the cushioning isolation protrusion 14, a first cushioning channel 15 having an elliptical cross section is provided inside the cushioning isolation protrusion 14, and an extension line of the long axial inside of the ellipse passes through the axial center of the bracket inner layer 11.

Specifically, as shown in fig. 1 and fig. 2, the fireproof power wire core 2 is coaxially disposed at the inner side of the inner support layer 11, the plurality of fireproof control wire cores 3 are circumferentially distributed in the gap between the inner support layer 11 and the fireproof power wire core 2, and the first isolation layer 6 and the second isolation layer 7 are sequentially coated at the outer side of the buffer support 1 from inside to outside.

In practical application, the fireproof power core 2 includes a power core conductor 21, and a power core first insulating layer 22 and a power core second insulating layer 23 sequentially coated on the outer side of the power core conductor 21. The fireproof control wire core 3 comprises a control wire core conductor 31, a control wire core first insulating layer 32 and a control wire core second insulating layer 33 which are sequentially coated on the outer side of the control wire core conductor 31. The first isolation layer 6 is made of aluminum, aluminum alloy, copper or copper alloy strips, and the second isolation layer 7 is made of low-smoke halogen-free flame-retardant polyolefin material.

The fireproof cable of this embodiment sets up fireproof power core 2 and fireproof control core 3 in the inboard of buffer support 1 through comprehensive structural design, sets up first isolation layer 6 and second isolation layer 7 in the outside of buffer support 1, improves cable overall structure's stability when guaranteeing cable fire prevention security performance, improves the bending property of cable, makes the cable be applicable to narrower installation laying space.

As shown in fig. 3, an exemplary second embodiment of the present utility model provides a fireproof cable, which is a preferred embodiment of the fireproof cable shown in fig. 1, and the fireproof cable of this embodiment includes a plurality of fireproof signal wire cores 4, where the plurality of fireproof signal wire cores 4 are disposed in gaps between the outer layer 12 of the support and the inner layer 11 of the support and located at two sides of the buffer isolation protrusion 14, and in practical application, the fireproof signal wire cores 4 are composed of a signal wire core conductor 41 and a signal wire core insulation layer 42 coated on the outer side of the signal wire core conductor 41. In order to improve the structural stability of the fireproof cable of this embodiment, the fireproof cable of this embodiment includes a plurality of buffer tubes 5, the buffer tubes 5 are disposed in the gaps between the first isolation layer 6 and the junction of two adjacent circular arc surfaces on the outer layer 12 of the support in a one-to-one correspondence manner, and in practical application, in order to further improve the stability and bending performance of the cable structure, the inner side of the buffer tube 5 is coaxially provided with a second buffer channel 51 with a circular cross section.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The utility model provides a fireproof cable, its characterized in that, fireproof cable includes buffer support, fireproof power core, a plurality of fireproof control core, first isolation layer and second isolation layer, wherein, buffer support includes support inlayer and support skin, the support skin is by circumference distribution in the outer protruding a plurality of arc surfaces an organic wholely links to each other in support inlayer outside and constitutes, support inlayer and support skin link to each other through a plurality of supporting walls an organic wholely, a plurality of buffering isolation protruding portion circumference distributions are in the outer medial surface of support, fireproof power core concentric axis sets up the inboard at support inlayer, a plurality of fireproof control core circumference distributions are in the clearance of support inlayer and fireproof power core, first isolation layer and second isolation layer are from inside cladding in proper order outside buffer support.

2. The fire protection cable of claim 1, wherein the support wall is circumferentially uniformly distributed between the inner and outer support layers, one end of the support wall being integrally connected to the inner support layer, and the other end of the support wall being integrally connected to the outer support layer.

3. The fire protection cable of claim 1, wherein one end of the support wall is integrally connected to the junction between two adjacent arcuate surfaces on the outer layer of the bracket.

4. The fire-resistant cable according to claim 1, wherein a plurality of buffer isolation protruding portions are provided inside a plurality of circular arc surfaces of the outer layer of the bracket in one-to-one correspondence, one end of the buffer isolation protruding portion is integrally connected with the outer layer of the bracket, and the other end of the buffer isolation protruding portion has a circular cross section.

5. The fire-resistant cable according to claim 4, wherein a first buffer channel is provided on the inner side of the buffer isolation protrusion, the cross section of the first buffer channel is elliptical, and an extension line of the long axial inner side of the ellipse passes through the axis of the inner layer of the bracket.

6. The fire-resistant cable according to claim 1, wherein the fire-resistant cable comprises a plurality of fire-resistant signal wire cores, the fire-resistant signal wire cores are arranged in gaps between the outer layer of the support and the inner layer of the support and positioned at two sides of the buffer isolation protruding part in a one-to-one correspondence manner, and the fire-resistant signal wire cores are composed of signal wire core conductors and signal wire core insulating layers coated on the outer sides of the signal wire core conductors.

7. The fire-resistant cable according to claim 1, further comprising a plurality of buffer tubes, wherein the buffer tubes are arranged in a gap between the first isolation layer and the junction of two adjacent circular arc surfaces on the outer layer of the support in a one-to-one correspondence manner, and the inner side of each buffer tube is coaxially provided with a second buffer channel with a circular cross section.

8. The fire-resistant cable according to claim 1, wherein the fire-resistant power core comprises a power core conductor, and a power core first insulating layer and a power core second insulating layer which are sequentially coated on the outer side of the power core conductor.

9. The fire-resistant cable according to claim 1, wherein the fire-resistant control wire core comprises a control wire core conductor, and a control wire core first insulating layer and a control wire core second insulating layer which are sequentially coated on the outer side of the control wire core conductor.

10. The fire-resistant cable according to claim 1, characterized in that the first barrier layer is made of aluminium, aluminium alloy, copper or copper alloy tape and the second barrier layer is made of a low smoke halogen-free flame retardant polyolefin material.