CN212847758U

CN212847758U - Turn-around internal stress-removing cable

Info

Publication number: CN212847758U
Application number: CN202021677242.1U
Authority: CN
Inventors: 曹永富; 汤灼安; 高志远; 郭静芸
Original assignee: Guangdong Zhongbao Cable Co ltd
Current assignee: Guangdong Zhongbao Cable Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-03-30
Anticipated expiration: 2030-08-12

Abstract

The utility model provides a turn and remove internal stress cable, be provided with the wire, the insulating layer, stress bending layer and protective layer, the position that uses the wire to locate is interior, the internal face cladding wire of insulating layer, the outer wall of the internal face cladding insulating layer of stress bending layer, the outer wall on stress bending layer is wrapped up to the internal face of protective layer, this turn and remove internal stress cable reaches the effect of the cable of buckling through stress bending layer when buckling the cable, get rid of the cable through stress bending layer simultaneously and buckle the damage to the inside wire of cable, the security that the protection cable used, use cost's characteristics are reduced.

Description

Turn-around internal stress-removing cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a turn internal stress cable that goes.

Background

The electric wire and the cable are used as necessary hardware facilities for power transmission and are commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater. In actual use, due to different use environments, the cable is often required to be bent, the bending operation is improper or the cable is excessively bent in the bending process, the internal lead is damaged, and even if the internal lead is not broken, a part of the lead is cracked due to the bending point, so that the transmission performance of the cable is reduced.

Meanwhile, after a part of cable is bent and used for a period of time, when the bending direction is changed again, the inner lead is easy to break, and the cost of using the cable by people is increased.

Therefore, it is necessary to provide a cable with a bending stress-relieving function to overcome the deficiencies of the prior art.

Disclosure of Invention

An object of the utility model is to avoid prior art's weak point and provide a turn to internal stress cable that goes, this turn to internal stress cable can be carried out the cable bending according to the use needs when using, and gets rid of the destruction of the stress of buckling to cable inner conductor at the in-process of buckling, the security that the protection cable used reduces use cost's characteristics.

The above object of the present invention is achieved by the following technical means.

The cable is sequentially provided with a conducting wire, an insulating layer, a stress bending layer and a protective layer from the center to the outside, the conducting wire is wrapped on the inner wall surface of the insulating layer, the outer wall surface of the insulating layer is wrapped on the inner wall surface of the stress bending layer, and the outer wall surface of the stress bending layer is wrapped on the inner wall surface of the protective layer.

Preferably, the stress bending layer is provided with a particle substance layer and a bending metal wire, the bending metal wire takes the insulating layer as a central point of the lead, the insulating layer is uniformly distributed around the outer wall surface of the insulating layer at a distance H from the outer wall surface of the insulating layer in sequence, and the bending metal wire is embedded in the particle substance layer.

Preferably, the bending wire is provided with a plurality of wires.

Preferably, the plurality of metal wires are individually distributed and arranged to surround the outer wall surface of the insulating layer, or the plurality of metal wires are twisted into a group of metal nets to surround the outer wall surface of the insulating layer.

Preferably, the particulate material layer has a porosity of P'_Granule，35％≤P′_Granule≤65％。

Preferably, the metal wire is a copper wire, an iron wire or an aluminum wire.

Preferably, the wire is coated with an anti-rust coating.

Preferably, the particulate material layer is at least one of a masonry particulate material layer, activated carbon particles, sand particles and foam particles.

Preferably, the flame-retardant layer and the fireproof layer are further arranged between the stress bending layer and the protective layer, and the flame-retardant layer is arranged outside the fireproof layer.

The utility model discloses an internal stress cable is got rid of in turn is provided with wire, insulating layer, stress bending layer and protective layer, reaches the effect of the cable of buckling through stress bending layer when the cable of buckling, gets rid of the cable through stress bending layer simultaneously and buckles the damage of time to the inside wire of cable, the security that the protection cable used reduces use cost's characteristics.

Drawings

The present invention will be further described with reference to the accompanying drawings, but the contents in the drawings do not constitute any limitation to the present invention.

Fig. 1 is a schematic structural diagram of an embodiment 1 of a cable with internal stress removed by bending according to the present invention.

Fig. 2 is a schematic structural diagram of an embodiment 3 of the bending internal stress-relieving cable according to the present invention.

In fig. 1 to 2, the method includes:

the structure comprises a lead 100, an insulating layer 200, a stress bending layer 300, a particulate matter layer 301 and a bent metal wire 302;

protective layer 400, flame retardant layer 500, flame retardant layer 600.

Detailed Description

The invention will be further described with reference to the following examples.

Example 1.

A bending internal stress-removing cable is sequentially provided with a conducting wire 100, an insulating layer 200, a stress bending layer 300 and a protective layer 400 from the center to the outside as shown in fig. 1 to fig. 2, wherein the conducting wire 100 is covered on the inner wall surface of the insulating layer 200 by taking the position of the conducting wire 100 as the inside, the outer wall surface of the insulating layer 200 is covered on the inner wall surface of the stress bending layer 300, and the outer wall surface of the stress bending layer 300 is covered on the inner wall surface of the protective layer 400.

Specifically, the stress bending layer 300 is provided with a particle material layer 301 and a bending metal wire 302, the bending metal wire 302 uses the insulating layer 200 as a central point of the conductive wire 100, and is sequentially uniformly distributed around the outer wall surface of the insulating layer 200 at a distance H from the outer wall surface of the insulating layer 200, and the bending metal wire 302 is embedded in the particle material layer 301.

Specifically, the bending wire 302 is provided with a plurality of wires. The bent wire 302 may be provided with 4, 6, 8, 10, 12, in this embodiment 8, in use.

Specifically, the plurality of metal wires are individually distributed and arranged around the outer wall surface of the insulating layer 200, or the plurality of metal wires are twisted into a group of metal nets around the outer wall surface of the insulating layer 200. In this embodiment, the plurality of metal wires are individually distributed and arranged to surround the outer wall surface of the insulating layer 200, and in practical use, the plurality of metal wires may also be arranged on the outer wall surface of the insulating layer 200 by twisting into a group, and the twisting manner is common knowledge of those skilled in the art, and will not be described in detail.

Specifically, the particulate material layer 301 has a porosity of P'_Granule，35％≤P′_GranuleLess than or equal to 65 percent. The porosity of the particulate substance layer 301 in this embodiment is 45%.

Specifically, the metal wire is a copper wire, an iron wire or an aluminum wire. The metal wire is provided as a wire in this embodiment.

Specifically, the particulate material layer 301 is provided as at least one of a masonry particulate material layer, activated carbon particles, sand particles, and foam particles. The particle material layer 301 is simultaneously set to be a mixed layer of a masonry particle material layer, activated carbon particles, sand particles and foam particles.

When the bending internal stress removing cable is used, the bending guide cable which passes through the bending metal wire in the stress bending layer reaches a bending angle required to be selected, and meanwhile redundant physical stress is removed through the particle matter layer in the stress bending layer, such as P 'in the particle matter layer'_GranuleThe excessive stress is eliminated through the internal gap and the friction among the granular substances to the maximum extent in 45 percent, the bending angle of the wire is safely finished, and the deformation and the damage of the wire in the cable are avoided.

Example 2.

A turn-around internal stress relieving cable having the same other structure as in example 1 except that the wire is coated with an anticorrosive coating on the outside.

Through the outer surface coating with the wire have anti rust coating, can prevent that the wire from causing the effect of influence effect of buckling such as rust because of the live time overlength, also can prolong the life of this cable simultaneously.

Example 3.

The other structures of the cable are the same as those of the cable in embodiment 1 or 2, except that a flame-retardant layer 500 and a flame-retardant layer 600 are further arranged between the stress bending layer 300 and the protective layer 400, and the flame-retardant layer 500 is arranged outside the flame-retardant layer 600.

The use safety of this cable can further be promoted through being provided with fire-retardant layer and flame retardant coating to can guarantee that this cable is difficult for receiving external environment's influence in the use.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand 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.

Claims

1. The utility model provides a turn internal stress removal cable which characterized in that: the lead is sequentially provided with a lead, an insulating layer, a stress bending layer and a protective layer from the center to the outside, the position of the lead is taken as the inner side, the inner wall surface of the insulating layer wraps the lead, the inner wall surface of the stress bending layer wraps the outer wall surface of the insulating layer, and the inner wall surface of the protective layer wraps the outer wall surface of the stress bending layer.

2. The bend-relieved internal stress cable according to claim 1, wherein: stress bending layer is provided with the granule material layer and buckles the wire, buckle the wire with the insulating layer is the central point of wire, in proper order with the distance the outer wall H of insulating layer apart from evenly distributed encircle in the outer wall of insulating layer, just buckle the wire inlay in the granule material layer.

3. The bend-relieved internal stress cable according to claim 2, wherein: the bending metal wire is provided with a plurality of metal wires.

4. The bend-relieved internal stress cable according to claim 3, wherein: the metal wires are independently distributed and arranged to surround the outer wall surface of the insulating layer, or the metal wires are twisted into a group of metal nets to surround the outer wall surface of the insulating layer.

5. The bend-relieved internal stress cable according to claim 4, wherein: the particulate material layer has a porosity of P'_Granule，35％≤P′_Granule≤65％。

6. The bend-relieved internal stress cable according to claim 5, wherein: the metal wire is copper wire, iron wire or aluminum wire.

7. The bend-relieved internal stress cable according to claim 6, wherein: the metal wire is coated with an antirust coating.

8. The bend-relieved internal stress cable according to claim 7, wherein:

the stress bending layer is arranged between the stress bending layer and the protective layer, and the flame-retardant layer is arranged outside the flame-retardant layer.