CN213877647U

CN213877647U - Cold-resistant cross-linked polyethylene insulated power cable

Info

Publication number: CN213877647U
Application number: CN202022946048.5U
Authority: CN
Inventors: 赵影; 杨旋; 邓任作
Original assignee: Guangdong Jianbao Cable Co ltd
Current assignee: Guangdong Jianbao Cable Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-08-03
Anticipated expiration: 2030-12-07

Abstract

The utility model discloses a cold-resistant crosslinked polyethylene insulated power cable, include: copper core group, heat preservation, crosslinked polyethylene inoxidizing coating, outer protective layer and screens groove, the inner wall of outer protective layer is equipped with the crosslinked polyethylene inoxidizing coating, the interior circumference of crosslinked polyethylene inoxidizing coating is provided with the inner protective layer, a plurality of fixed blocks of circumference symmetry fixedly connected with in the inner protective layer, each one side that the crosslinked polyethylene inoxidizing coating was kept away from to the fixed block is fixed connection in the outer periphery of heat preservation respectively, the inside of heat preservation is equipped with the screens groove, the axis center department in screens groove is equipped with the through-hole, screens inslot portion is equipped with a plurality of copper core group, and the equal cladding of periphery of each copper core group has an insulating skin. The utility model discloses a distribute copper core group at the screens inslot portion around the through-hole, increased the crushing resistance of cable, can prevent that the crosslinked polyethylene inoxidizing coating from splitting, can reduce the pollution to the air.

Description

Cold-resistant cross-linked polyethylene insulated power cable

Technical Field

The utility model relates to a power cable specifically is a cold-resistant crosslinked polyethylene insulated power cable, belongs to cable technical field.

Background

Cable: the cable is generally composed of a plurality of or a plurality of groups of wires and has insulation resistance, thermal aging resistance, chemical stability resistance, water resistance, conductivity and the like, so that the cable is widely applied to various large power utilization places, the use amount of the cable is continuously increased in severe cold areas, and the cable is required to have good cold resistance in order to ensure the installation safety, the laying safety and the stability and the safety in operation of the cable in the severe cold environment.

The cable inoxidizing coating is made to current cable adoption polyethylene material, make the cable can have cold-resistant effect, nevertheless under the condition of long-time use, after the inside high temperature of cable, because ambient temperature is low excessively, and make the inboard temperature of crosslinked polyethylene inoxidizing coating of cable be higher than outside temperature, lead to the crosslinked polyethylene inoxidizing coating to split, make the inside copper core group of cable expose in the external world, thereby lead to the cable to damage, and can produce dense smoke after current cable meets the fire disaster, cause serious pollution to the air.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cold-resistant crosslinked polyethylene insulated power cable just in order to solve above-mentioned problem, can prevent that the crosslinked polyethylene inoxidizing coating from splitting, can reduce the pollution to the air.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a cold-resistant crosslinked polyethylene insulated power cable, include: copper core group, heat preservation, crosslinked polyethylene inoxidizing coating, outer protective layer and screens groove, the inner wall of outer protective layer is provided with the crosslinked polyethylene inoxidizing coating, the inner circumference face of crosslinked polyethylene inoxidizing coating is provided with the inner protective layer, a plurality of fixed blocks of circumferential symmetry fixedly connected with in the inner protective layer, each one side that the crosslinked polyethylene inoxidizing coating was kept away from to the fixed block is fixed connection in the outer periphery of heat preservation respectively, the inside of heat preservation is equipped with the screens groove, the axis center department in screens groove is equipped with the through-hole, screens inslot portion is equipped with a plurality of copper core group, and the equal cladding of periphery of each copper core group has an insulating skin.

Preferably, in order to prevent that the cable from catching fire and producing dense smoke, be equipped with the filling rope between heat preservation and the screens groove, the filling rope is made for low smoke and zero halogen flame retardant material.

Preferably, the heat-insulating layer is made of ceramic fiber materials.

Preferably, in order to facilitate the bending of the cable, the copper core groups are distributed in the clamping grooves in an emitting manner around the through holes, and fillers are arranged in the through holes.

Preferably, the outer protective layer and the inner protective layer are both made of polyurethane fiber materials.

The utility model has the advantages that: the inner circumferential surface and the outer circumferential surface of the crosslinked polyethylene protective layer are respectively provided with the inner protective layer and the outer protective layer, so that the cable can be suitable for severe cold areas, and the heat-insulating layer is arranged in the inner protective layer, so that heat energy generated by the copper core group is not easy to disperse outwards, the temperature difference between the inner side surface and the outer side surface of the crosslinked polyethylene protective layer is small, the crosslinked polyethylene protective layer is not easy to crack, and the cable is not damaged;

the copper core group is arranged in the clamping groove, so that the clamping groove can fix the copper core group, and the filling rope made of low-smoke halogen-free flame-retardant material is arranged between the clamping groove and the heat-insulating layer, so that dense smoke can be reduced when a fire disaster occurs, the pollution to the air is reduced, the environment is protected conveniently, and the rescue work of the fire disaster is facilitated;

through with copper core group around the through-hole distribution inside the screens groove for the through-hole is inside can fill in the filler, thereby when being convenient for the cable is crooked, has increased the crushing resistance of cable, and then makes the cable can be applicable to under the various condition.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view taken along line a-a of fig. 1 according to the present invention.

In the figure: 1. copper core group, 2, insulating skin, 3, packing rope, 4, heat preservation, 5, fixed block, 6, crosslinked polyethylene inoxidizing coating, 7, outer protective layer, 8, screens groove, 9, inner protective layer, 10, through-hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a cold-resistant cross-linked polyethylene insulated power cable includes: copper core group 1, heat preservation 4, crosslinked polyethylene inoxidizing coating 6, outer protective layer 7 and screens groove 8, the inner wall of outer protective layer 7 is provided with crosslinked polyethylene inoxidizing coating 6, the interior circumference of crosslinked polyethylene inoxidizing coating 6 is provided with interior protective layer 9, a plurality of fixed blocks of circumference symmetry fixedly connected with 5 in the interior protective layer 9, one side difference fixed connection in heat preservation 4's outer periphery is kept away from to each fixed block 5 to crosslinked polyethylene inoxidizing coating 6, the inside of heat preservation 4 is equipped with screens groove 8, the axis center department in screens groove 8 is equipped with through-hole 10, screens groove 8 is inside to be equipped with a plurality of copper core group 1, the equal cladding of periphery of each copper core group 1 has an insulating skin 2.

As a technical optimization scheme, be equipped with packing rope 3 between heat preservation 4 and the screens groove 8, packing rope 3 is made for low smoke and zero halogen flame retardant material for when the conflagration breaing out, the cable is difficult for producing dense cigarette.

As a technical optimization scheme of the utility model, heat preservation 4 is made for ceramic fiber material for the heat preservation 4 that is difficult for discharging of the heat energy that copper core group 1 produced.

As a technical optimization scheme of the utility model, a plurality of copper core group 1 is the launch form around through-hole 10 and distributes inside screens groove 8, and the inside filler that is equipped with of through-hole 10 for the cable can be crooked.

As a technical optimization scheme of the utility model, the outer protective layer 7 and the inner protective layer 9 are made of polyurethane fiber materials.

When the utility model is used, the crosslinked polyethylene protective layer 6 is arranged outside the cable, so that the cable can be suitable for severe cold areas, the inner circumferential surface and the outer circumferential surface of the crosslinked polyethylene protective layer 6 are respectively provided with the inner protective layer 9 and the outer protective layer 7, the heat preservation layer 4 is arranged inside the inner protective layer 9, and the heat preservation layer 4 is made of ceramic fiber materials, so that heat energy generated by the copper core group 1 is not easy to discharge out of the heat preservation layer 4, the temperature of the inner side of the crosslinked polyethylene protective layer 6 is not too high, the temperature difference between the inner side and the outer side of the crosslinked polyethylene protective layer 6 is not too large, the crosslinked polyethylene protective layer 6 is not easy to crack, and the cable is not damaged;

the copper core group 1 is arranged inside the clamping groove 8, and the filling rope 3 made of low-smoke halogen-free flame-retardant material is arranged between the clamping groove 8 and the heat-insulating layer 4, so that dense smoke is reduced in case of fire, and the effect of protecting the environment is further achieved;

through with copper core group 1 around through-hole 10 distribute inside screens groove 8 for through-hole 10 is inside can increase the filler, thereby the cable of being convenient for is crooked, and has increased the crushing resistance of cable, and then makes under the cable can be applicable to the various condition, and structural design is ingenious more has the practicality.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A cold resistant cross-linked polyethylene insulated power cable comprising: copper core group (1), heat preservation (4), crosslinked polyethylene inoxidizing coating (6), outer protective layer (7) and screens groove (8), its characterized in that: the inner wall of outer protective layer (7) is provided with crosslinked polyethylene inoxidizing coating (6), the interior circumference of crosslinked polyethylene inoxidizing coating (6) is provided with inner protective layer (9), a plurality of fixed blocks (5) of inner protective layer (9) inner circumference symmetry fixedly connected with, each one side that crosslinked polyethylene inoxidizing coating (6) were kept away from in fixed block (5) is fixed connection in the outer periphery of heat preservation (4) respectively, the inside of heat preservation (4) is equipped with screens groove (8), the axis center department of screens groove (8) is equipped with through-hole (10), the inside copper core group of a plurality of (1) that is equipped with in screens groove (8), the periphery of each copper core group (1) all the cladding have one insulating skin (2).

2. The cold-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: be equipped with between heat preservation (4) and screens groove (8) filling rope (3), filling rope (3) are low smoke and zero halogen flame retardant material and make.

3. The cold-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the heat-insulating layer (4) is made of ceramic fiber materials.

4. The cold-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: a plurality of copper core group (1) is around through-hole (10) and is the distribution of emission form inside screens groove (8), just through-hole (10) inside is equipped with the filler.

5. The cold-resistant cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the outer protective layer (7) and the inner protective layer (9) are both made of polyurethane fiber materials.