CN209947486U

CN209947486U - Protective tube for single-core cable

Info

Publication number: CN209947486U
Application number: CN201921175366.7U
Authority: CN
Inventors: 羊慧芳
Original assignee: Giles (xiamen) Electric Co Ltd
Current assignee: Giles (xiamen) Electric Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-01-14
Anticipated expiration: 2029-07-24

Abstract

The utility model provides a protection tube for single core cable from inside to outside including assembly pipe, inner tube and outer tube, be equipped with the flame retardant coating between outer tube and the inner tube, the thickness of flame retardant coating is 0.3-1cm, be equipped with the built on stilts layer between inner tube and the assembly pipe, the built on stilts layer equidistance distributes and has a piece, and the interior terminal surface of each piece links to each other with the assembly pipe is fixed, and the outer terminal surface of each piece links to each other with the inner tube is fixed, forms the heat dissipation space between each piece, assembly pipe equidistance distributes and has the radiating groove, and each radiating groove link up with each heat dissipation space respectively mutually, the utility model discloses have good fire-retardant and wear resistance, the effect of the contact stress that can significantly reduce simultaneously has fine thermal diffusivity simultaneously, fine assurance cable steady operation.

Description

Protective tube for single-core cable

Technical Field

The utility model relates to a cable, in particular to a protection tube for single core cable.

Background

Cables are made of one or more mutually insulated conductors and an outer insulating protective tube, which transmits power or information from one point to another. At present most protection tubes are only made of a simple layer of plastic pipe, are single in function, are easy to damage when being carried and moved, and simultaneously, the cable is easy to generate heat when working, and the protection tubes are too many and simple and are easy to damage due to overheating.

SUMMERY OF THE UTILITY MODEL

To prior art's weak point, the utility model provides a protection tube for single core cable, it has good fire-retardant and wear resistance, and the effect of the contact stress that can significantly reduce simultaneously has fine thermal diffusivity, fine assurance cable steady operation simultaneously.

In order to achieve the above purpose, the utility model provides a technical scheme is: a protection tube for a single-core cable comprises an assembly tube, an inner tube and an outer tube from inside to outside, wherein a fire-resistant layer is arranged between the outer tube and the inner tube, the thickness of the fire-resistant layer is 0.3-1cm, an overhead layer is arranged between the inner tube and the assembly tube, support blocks are distributed on the overhead layer at equal intervals, the inner end face of each support block is fixedly connected with the assembly tube, the outer end face of each support block is fixedly connected with the inner tube, heat dissipation spaces are formed among the support blocks, heat dissipation grooves are distributed on the assembly tube at equal intervals, and the heat dissipation grooves are communicated with the heat dissipation spaces respectively.

Furthermore, a reinforcing block is arranged in the middle between the support blocks, the reinforcing block divides the heat dissipation space into an inner space and an outer space, heat dissipation holes are distributed in the reinforcing block at equal intervals, and each heat dissipation hole penetrates through the inner space and the outer space.

Further, the outer pipe is made of a refractory material, and the refractory layer is made of a heat-insulating material.

Compared with the prior art, the method has the following beneficial effects:

the utility model greatly increases the fire resistance of the protection tube, is not easy to be ignited and damaged, and can well isolate the external heat at the same time, thereby ensuring that the protection tube can not be damaged by overheating; moreover, the overhead layer can well disperse and offset the contact stress of the protection tube, so that the cable cannot cause the internal damage of the protection tube when moving; in addition, heat generated by cable operation can be divided and guided into each heat dissipation space, overheating of a single heat dissipation space can be avoided, and heat dissipation performance of the cable can be accelerated.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The present invention will be described in further detail with reference to the accompanying drawings.

Detailed Description

As shown in fig. 1, the protection tube for the single-core cable comprises an assembly tube 1, an inner tube 2 and an outer tube 3 from inside to outside, wherein a fire-resistant layer 4 is arranged between the outer tube 3 and the inner tube 2, the thickness of the fire-resistant layer 4 is 0.3-1cm, the outer tube 3 is made of a fire-resistant material, the fire-resistant layer 4 is made of a heat-insulating material, the fire resistance of the protection tube is greatly increased, the protection tube is not easy to catch fire and damage, external heat can be well isolated, and the protection tube is guaranteed not to be damaged due to overheating.

The cable protection pipe is characterized in that an overhead layer 5 is arranged between the inner pipe 2 and the assembly pipe 1, branch blocks 51 are distributed on the overhead layer 5 at equal intervals, the inner end face of each branch block 51 is fixedly connected with the assembly pipe 1, the outer end face of each branch block 51 is fixedly connected with the inner pipe 2, reinforcing blocks 52 are arranged in the middle between the branch blocks 51 and the branch blocks 51, the overhead layer 5 can well disperse and offset the contact stress of the protection pipe, and therefore the cable cannot cause damage to the inside of the protection pipe when moving.

The heat dissipation space 53 is formed between the branch blocks 51, the heat dissipation grooves 11 are equidistantly distributed on the assembly pipe 1, the heat dissipation grooves 31 are respectively communicated with the heat dissipation spaces 53, the reinforcing block 52 divides the heat dissipation space 53 into an inner space 54 and an outer space 55, the heat dissipation holes 56 are equidistantly distributed on the reinforcing block 52, the heat dissipation holes 56 are communicated with the inner space 54 and the outer space 55, heat generated by cable operation can be divided and guided into the heat dissipation spaces 53, overheating of the single heat dissipation space 53 can be avoided, heat dissipation of the cable can be accelerated, and the working temperature can be reduced.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a protection tube for single core cable, from inside to outside is including assembly pipe, inner tube and outer tube, its characterized in that: the heat dissipation structure is characterized in that a fire-resistant layer is arranged between the outer pipe and the inner pipe, the thickness of the fire-resistant layer is 0.3-1cm, an overhead layer is arranged between the inner pipe and the assembly pipe, support blocks are distributed on the overhead layer at equal intervals, the inner end face of each support block is fixedly connected with the assembly pipe, the outer end face of each support block is fixedly connected with the inner pipe, heat dissipation spaces are formed among the support blocks, heat dissipation grooves are distributed on the assembly pipe at equal intervals, and the heat dissipation grooves are communicated with the heat dissipation spaces respectively.

2. A protection tube for single core cables according to claim 1, characterized in that: the middle part between the support block and the support block is provided with a reinforcing block, the reinforcing block divides a heat dissipation space into an inner space and an outer space, heat dissipation holes are distributed on the reinforcing block at equal intervals, and each heat dissipation hole penetrates through the inner space and the outer space.

3. A protection tube for single core cables according to claim 1, characterized in that: the outer pipe is made of a refractory material, and the refractory layer is made of a heat-insulating material.