CN214012538U

CN214012538U - Polyethylene sheath flexible cable

Info

Publication number: CN214012538U
Application number: CN202023129978.8U
Authority: CN
Inventors: 徐安顺
Original assignee: Jiangsu Liwei Electronic Technology Co ltd
Current assignee: Jiangsu Liwei Electronic Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-20
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a polyethylene sheath flexible cable, include the sinle silk body that constitutes by the transposition of three insulation core, the sinle silk outside is equipped with heat dissipation layer and high density polyethylene protective sheath in proper order, is equipped with logical groove on the high density polyethylene protective sheath, leads to inslot fixedly connected with heat conduction stick, and a plurality of heat dissipation lugs of the outside fixedly connected with of high density polyethylene protective sheath, the arc is personally submitted to heat dissipation lug outward appearance, heat conduction stick one end and heat conduction lug fixed connection, and the heat dissipation layer outside is equipped with a plurality of draw-in grooves, and the heat conduction stick other end is pegged graft in the draw-in groove. The utility model has the advantages that: the utility model provides a pair of polyethylene sheath flexible cable can in time disperse the heat that produces when the circular telegram in the course of the work, has solved the untimely problem of current cable heat dissipation, and heat dispersion is good, avoids taking place because of the condition that the heat dissipation is untimely arouses the conflagration often.

Description

Polyethylene sheath flexible cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a polyethylene sheath flexible cable.

Background

At present, with the continuous development of society and economy, the electricity consumption of residents is continuously increased, and with the development of the power industry, the data communication industry, the urban rail transit industry and the like, the requirements on cables are higher and higher. The cable among the prior art can produce certain heat when the cable passes through certain load current, and along with load current's increase, cable surface temperature just is higher, if the current-carrying capacity of wire and cable surpassed its limit bearing capacity, just probably because the heat dissipation arouses the conflagration in time, causes life and property loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a polyethylene sheath flexible cable, thereby solving the problems existing in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a polyethylene sheath flexible cable comprises a cable core body formed by twisting three insulated cable cores, wherein a heat dissipation layer and a high-density polyethylene sheath are sequentially arranged outside the cable core body, a through groove is formed in the high-density polyethylene sheath, a heat conduction rod is fixedly connected in the through groove, a plurality of heat dissipation lugs are fixedly connected outside the high-density polyethylene sheath, the outer surfaces of the heat dissipation lugs are arc-shaped, one end of the heat conduction rod is fixedly connected with the heat dissipation lugs, a plurality of clamping grooves are formed outside the heat dissipation layer, and the other end of the heat conduction rod is inserted into the clamping grooves;

the insulating core includes interior wire, interior wire outside is equipped with fire-retardant layer and low density polyethylene protective sheath in proper order.

Preferably, a plurality of reinforcing ribs are fixedly connected between the flame-retardant layer and the low-density polyethylene protective sleeve.

Preferably, the heat dissipation layer is made of a thermally conductive silicone material.

Preferably, the heat conducting rod and the heat dissipation bump are both made of silicon rubber insulating materials.

Preferably, the flame-retardant layer is formed by mixing a polyolefin material and a halogen-free flame-retardant material.

The utility model has the advantages that: the utility model provides a pair of polyethylene sheath flexible cable can in time disperse the heat that produces when the circular telegram in the course of the work, has solved the untimely problem of current cable heat dissipation, and heat dispersion is good, avoids taking place because of the condition that the heat dissipation is untimely arouses the conflagration often.

Drawings

Fig. 1 is a schematic diagram of the basic structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is an enlarged view of the structure at B in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1-3, the utility model provides a polyethylene sheath flexible cable, which comprises a cable core 1 formed by twisting three insulated cable cores, the cable core is provided with a heat dissipation layer 2 and a high density polyethylene sheath 3 in sequence, the polyethylene material has excellent heat resistance and stability, so that the high density polyethylene sheath 3 is not easy to be damaged when used under severe environmental conditions, the heat dissipation layer 2 is made of a heat conductive silica gel material, the heat conductive silica gel has excellent heat conductivity, when current passes through the cable core 1, the heat dissipation layer 2 can conduct the heat generated by the cable core 1 to the outside of the high density polyethylene sheath 3, so as to timely dissipate the heat generated by the cable core 1, the high density polyethylene sheath 3 is provided with a through groove, the through groove is fixedly connected with a heat conductive rod 31, the high density polyethylene sheath 3 is fixedly connected with a plurality of heat dissipation lugs 32, the outer surface of the heat dissipation convex block 32 is arc-shaped, one end of the heat conduction rod 31 is fixedly connected with the heat dissipation convex block 32, the heat conduction rod 31 and the heat dissipation convex block 32 are both made of silicon rubber insulating materials, the silicon rubber insulating materials have better heat conductivity and larger surface friction force, on one hand, the heat conduction rod 31 and the heat dissipation convex block 32 have stronger heat dissipation performance, on the other hand, the heat dissipation convex block 32 can increase the friction force between the palm of a worker and the high-density polyethylene protective sleeve 3, so that the situation that a cable slides off from the hand of the worker when the worker installs the cable is prevented, a plurality of clamping grooves are arranged outside the heat dissipation layer 2, the other end of the heat conduction rod 31 is inserted into the clamping grooves, when the heat generated by the wire core body 1 is conducted by the heat dissipation layer 2, partial heat passes through the heat conduction rod 31 and reaches the position of the heat dissipation convex block 32, and is finally dissipated to the outside by the heat dissipation convex block 32, and the heat dissipation convex block 32 which is arc-shaped has larger surface area, the contact area between the heat dissipation convex block 32 and the outside is increased, the heat dissipation effect of the heat dissipation convex block 32 is enhanced, heat generated during the cable working is timely discharged through the heat dissipation convex block 32, the heat conduction rod 31 and the heat dissipation layer 3, the problem that the existing cable cannot dissipate heat timely is solved, the heat dissipation performance is good, and the situation of fire caused by untimely heat dissipation is avoided.

Insulating sinle silk includes inner conductor 11, the inner conductor outside is equipped with fire-retardant layer 12 and low density polyethylene protective sheath 13 in proper order, the polyethylene material has excellent heat resistance and stability, make low density polyethylene protective sheath 13 difficult production when using under harsh environmental condition damage, fire-retardant layer 12 is formed by polyolefin material and the mixture of halogen-free flame retardant material, can effectively prevent that inner conductor 11 from taking place the phenomenon on fire, a plurality of strengthening ribs 4 of fixedly connected with between fire-retardant layer 12 and the low density polyethylene protective sheath, the tensile strength of this cable has been increased.

When the cable is used, when current passes through the inside of the wire core body 1, the heat dissipation layer 2 can conduct heat generated by the wire core body 1 to the outside of the high-density polyethylene protective sleeve 3, so that the heat generated by the wire core body 1 can be dissipated timely, when the heat generated by the wire core body 1 is conducted by the heat dissipation layer 2, partial heat can pass through the heat conduction rod 31 and reach the position of the heat dissipation lug 32, and is finally dissipated to the outside by the heat dissipation lug 32, the heat dissipation lug 32 arranged in an arc shape has a large surface area, so that the contact area between the heat dissipation lug 32 and the outside is increased, the heat dissipation effect of the heat dissipation lug 32 is enhanced, heat generated when the cable works is timely discharged through the heat dissipation lug 32, the problem that the existing cable is not timely in heat dissipation is solved, the heat dissipation performance is good, and the occurrence of fire caused by untimely heat dissipation is avoided.

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. The utility model provides a polyethylene sheath flexible cable, includes the sinle silk body that constitutes by three insulation core (1) transposition, its characterized in that: the wire core body is sequentially provided with a heat dissipation layer (2) and a high-density polyethylene protective sleeve (3) outside, a through groove is formed in the high-density polyethylene protective sleeve (3), a heat conduction rod (31) is fixedly connected in the through groove, a plurality of heat dissipation lugs (32) are fixedly connected outside the high-density polyethylene protective sleeve (3), the outer surfaces of the heat dissipation lugs (32) are arc-shaped, one end of the heat conduction rod (31) is fixedly connected with the heat dissipation lugs (32), a plurality of clamping grooves are formed in the heat dissipation layer (2), and the other end of the heat conduction rod (31) is inserted in the clamping grooves;

the insulation core comprises an inner conductor (11), and a flame-retardant layer (12) and a low-density polyethylene protective sleeve (13) are sequentially arranged outside the inner conductor.

2. The polyethylene jacketed flexible cable of claim 1, wherein: and a plurality of reinforcing ribs (4) are fixedly connected between the flame-retardant layer (12) and the low-density polyethylene protective sleeve.

3. The polyethylene jacketed flexible cable of claim 1, wherein: the heat dissipation layer (2) is made of a heat-conducting silica gel material.

4. The polyethylene jacketed flexible cable of claim 1, wherein: the heat conducting rod (31) and the heat dissipation lug (32) are both made of silicon rubber insulating materials.

5. The polyethylene jacketed flexible cable of claim 1, wherein: the flame-retardant layer (12) is formed by mixing a polyolefin material and a halogen-free flame-retardant material.