CN218676567U

CN218676567U - Heat-insulation power cable

Info

Publication number: CN218676567U
Application number: CN202222594575.3U
Authority: CN
Inventors: 臧文丙; 宋敬涛; 王雁磊
Original assignee: Guangdong Huayang Cable Industry Co ltd
Current assignee: Guangdong Huayang Cable Industry Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-21
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a thermal-insulated heat retaining power cable relates to power cable technical field, for solving current power cable in the in-service use, when power cable meets external low temperature weather, probably can make the power cable surface freeze, and inside low temperature can reach power cable, influences the problem of inner structure's circular telegram effect. Including the power cable main part, be provided with the counter weight ring in the power cable main part, the counter weight ring is connected through the adhesion of insulating adhesive with the power cable main part, be provided with the connection parcel ring on the counter weight ring, the connection parcel ring sets up as an organic whole with the counter weight ring, still includes rubber insulation layer, rubber insulation layer sets up on power cable main part inner wall, rubber insulation layer passes through the adhesive adhesion with power cable main part inner wall and is connected, rubber insulation layer is provided with aluminium nitride wrapping layer in the one side of keeping away from power cable main part inner wall, aluminium nitride wrapping layer passes through the adhesive adhesion with rubber insulation layer and is connected.

Description

Heat-insulation power cable

Technical Field

The utility model relates to a power cable technical field specifically is a thermal-insulated heat retaining power cable.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and has a gradually increasing proportion in the power line. The power cable is a cable product for transmitting and distributing high-power electric energy in a main line of a power system, and comprises various voltage grades of 1-500KV and above, and various insulated power cables which can be divided into medium-voltage power cables, low-voltage power cables (35 KV and below), high-voltage cables (110 KV and above), ultrahigh-voltage cables (275-800 KV) and ultrahigh-voltage cables (1000 KV and above) according to the voltage grades. In addition, still can divide into alternating current cable and direct current cable according to the electric current system, like application number 201720220972.0 is a low smoke insulation type power cable, the device includes the inner skin, the surface of inner skin has been laid fire-retardant silicon rubber cushion, the compound piece of glass fiber has been laid to the fire-retardant silicon rubber cushion one side of keeping away from the inner skin surface, the compound piece of glass fiber has been laid one side of keeping away from fire-retardant silicon rubber cushion and has been equipped with polyolefin blend resin layer, the compound piece of polyolefin has been laid inorganic fire-retardant layer in one side of keeping away from the compound piece of glass fiber in polyolefin blend resin layer, the inorganic fire-retardant layer has been laid the aerogel felt piece in one side of keeping away from the inorganic fire-retardant layer in aerogel felt piece, and the space that plasticity sheetmetal and aerogel felt piece formed is filled with fine sand, the one side that the aerogel felt piece was kept away from to plasticity sheetmetal is laid and is equipped with the exocuticle. The utility model discloses a through the setting of inorganic fire-retardant layer, fire-retardant silicon rubber cushion, fine sand and plasticity sheetmetal, reach the effect of environmental protection.

When the power cable is used in the practical use process of the device, when the power cable meets the weather of low temperature outside, the surface of the power cable can be frozen, and the low temperature can be transmitted into the power cable, so that the electrifying effect of an internal structure is influenced; we therefore propose a power cable that is insulated from heat in order to solve the problems set out above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thermal-insulated heat retaining power cable to solve the current power cable that provides in the above-mentioned background art in the in-service use, when power cable meets external low temperature weather, probably can make the power cable surface freeze, and inside low temperature can reach power cable, influence the problem of inner structure's circular telegram effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a thermal-insulated heat retaining power cable, includes the power cable main part, be provided with the counter weight ring in the power cable main part, the counter weight ring is connected through the adhesion of insulating adhesive with the power cable main part, be provided with the connection parcel ring on the counter weight ring, the connection parcel ring sets up as an organic whole with the counter weight ring, still includes rubber insulation layer, rubber insulation layer sets up on power cable main part inner wall, rubber insulation layer passes through the adhesive adhesion with power cable main part inner wall and is connected, rubber insulation layer is provided with aluminium nitride wrapping layer in the one side of keeping away from power cable main part inner wall, aluminium nitride wrapping layer passes through the adhesive adhesion with rubber insulation layer and is connected.

Preferably, the aluminum nitride wrapping layer is provided with an inorganic composite material heat-insulating layer on one side far away from the rubber insulating layer, and the inorganic composite material heat-insulating layer is connected with the aluminum nitride wrapping layer through adhesive adhesion.

Preferably, a resin pouring wrapping layer is arranged on one side, far away from the aluminum nitride wrapping layer, of the inorganic composite material heat-insulating layer, and the resin pouring wrapping layer is connected with the inorganic composite material heat-insulating layer in an adhesion mode through an adhesive.

Preferably, the resin pouring wrapping layer is provided with a ceramic fiber insulating layer on one side far away from the inorganic composite material heat-insulating layer, and the ceramic fiber insulating layer is connected with the resin pouring wrapping layer in an adhesion manner through an adhesive.

Preferably, a copper wire is arranged on one side, far away from the resin pouring wrapping layer, of the ceramic fiber insulating layer, and the copper wire is connected with the bottom of the ceramic fiber insulating layer.

Preferably, the connecting and wrapping ring is provided with an anti-slip pattern, and the anti-slip pattern and the connecting and wrapping ring are integrally arranged.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with the counter weight ring in the power cable main part, the counter weight ring passes through the adhesion of insulating adhesive with the power cable main part and is connected, be provided with on the counter weight ring and connect the parcel ring, it sets up as an organic whole with the counter weight ring to connect the parcel ring, still include rubber insulation layer, rubber insulation layer sets up on power cable main part inner wall, rubber insulation layer passes through the adhesive adhesion with power cable main part inner wall and is connected, rubber insulation layer is provided with aluminium nitride wrapping layer in the one side of keeping away from power cable main part inner wall, aluminium nitride wrapping layer passes through the adhesive adhesion with rubber insulation layer and is connected, inorganic composite heat preservation and aluminium nitride wrapping layer pass through the adhesive adhesion and are connected, inorganic composite heat preservation itself adopts the inorganic matter to make, do not possess electric conductivity, and because of between the molecule gap less, the thermal conductivity is relatively poor when power cable main part short circuit with high temperature isolated inside the power cable main part, and can also get into inside the power cable main part with low temperature conduction when low temperature weather causes the power cable main part outward appearance to freeze, and can stop the internal electricity problem of low temperature transmission cable surface can be influenced.

2. Through being provided with anti-skidding decorative pattern on connecting the parcel ring, anti-skidding decorative pattern sets up as an organic whole with connecting the parcel ring, and the setting of anti-skidding decorative pattern can be when the staff inserts another power cable main part and connects the intra-annular two power cable main parts of messenger and form and merge the connection, increases the frictional force between power cable main part and the connection parcel ring and avoids droing or take place to slide.

Drawings

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

fig. 2 is a schematic front view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the main body of the power cable of the present invention;

in the figure: 1. a power cable body; 2. a counterweight ring; 3. connecting the wrapping rings; 4. anti-skid patterns; 5. a rubber insulating layer; 6. an aluminum nitride wrapping layer; 7. an inorganic composite material insulating layer; 8. pouring a wrapping layer by resin; 9. a ceramic fiber insulation layer; 10. a copper wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a thermal-insulated heat retaining power cable, including power cable main part 1, be provided with counterweight ring 2 in the power cable main part 1, counterweight ring 2 is connected through the adhesion of insulating adhesive with power cable main part 1, be provided with on the counterweight ring 2 and connect parcel ring 3, it sets up as an organic whole with counterweight ring 2 to connect parcel ring 3, still include rubber insulation layer 5, rubber insulation layer 5 sets up on power cable main part 1 inner wall, rubber insulation layer 5 passes through the adhesive adhesion with power cable main part 1 inner wall and is connected, one side that rubber insulation layer 5 kept away from power cable main part 1 inner wall is provided with aluminium nitride wrapping layer 6, aluminium nitride wrapping layer 6 passes through the adhesive adhesion with rubber insulation layer 5 and is connected.

Referring to fig. 3, an inorganic composite material insulating layer 7 is disposed on one side of the aluminum nitride wrapping layer 6 away from the rubber insulating layer 5, the inorganic composite material insulating layer 7 is connected with the aluminum nitride wrapping layer 6 through adhesive adhesion, the inorganic composite material insulating layer 7 is made of inorganic matters and does not have electrical conductivity, and because gaps between molecules are small, the thermal conductivity is poor, high temperature is isolated inside the power cable main body 1 when the power cable main body 1 is short-circuited, and low-temperature conduction can be prevented from entering the power cable main body 1 when the outer surface of the power cable main body 1 is frozen in low-temperature weather.

Referring to fig. 3, a resin casting wrapping layer 8 is disposed on one side of the inorganic composite material insulating layer 7 away from the aluminum nitride wrapping layer 6, the resin casting wrapping layer 8 is connected with the inorganic composite material insulating layer 7 through an adhesive, and the resin casting wrapping layer 8 can tightly fix the stranded copper wires 10 inside the power cable main body 1 in the resin casting wrapping layer 8, so as to prevent the copper wires 10 from rubbing against each other.

Referring to fig. 3, a ceramic fiber insulation layer 9 is disposed on a side of the resin casting wrapping layer 8 away from the inorganic composite material heat insulation layer 7, the ceramic fiber insulation layer 9 is connected with the resin casting wrapping layer 8 through an adhesive, and the ceramic fiber insulation layer 9 is made of ceramic fibers, so that the ceramic fiber insulation layer has light weight and excellent insulation property.

Referring to fig. 3, a copper wire 10 is disposed on the side of the ceramic fiber insulation layer 9 away from the resin casting wrapping layer 8, and the copper wire 10 is connected to the bottom of the ceramic fiber insulation layer 9.

Referring to fig. 1, an anti-slip pattern 4 is arranged on the connecting wrapping ring 3, the anti-slip pattern 4 and the connecting wrapping ring 3 are integrally arranged, and the anti-slip pattern 4 can increase the friction force between the power cable main bodies 1 and the connecting wrapping ring 3 to prevent the two power cable main bodies 1 from falling off or sliding when a worker inserts another power cable main body 1 into the connecting wrapping ring 3 to combine and connect the two power cable main bodies 1.

The working principle is as follows: when in use, the power cable main body 1 is provided with the counterweight ring 2, the counterweight ring 2 is connected with the power cable main body 1 through an insulating adhesive in an adhesion manner, the counterweight ring 2 is provided with the connecting wrapping ring 3, the connecting wrapping ring 3 and the counterweight ring 2 are arranged integrally, the power cable further comprises a rubber insulating layer 5, the rubber insulating layer 5 is arranged on the inner wall of the power cable main body 1, the rubber insulating layer 5 is connected with the inner wall of the power cable main body 1 through an adhesive in an adhesion manner, the rubber insulating layer 5 is provided with an aluminum nitride wrapping layer 6 at one side far away from the inner wall of the power cable main body 1, the aluminum nitride wrapping layer 6 is connected with the rubber insulating layer 5 through an adhesive in an adhesion manner, the aluminum nitride wrapping layer 6 is provided with an inorganic composite material heat-insulating layer 7 at one side far away from the rubber insulating layer 5, the inorganic composite material heat-insulating layer 7 is connected with the aluminum nitride wrapping layer 6 through an adhesive in an adhesion manner, and the inorganic composite material heat-insulating layer 7 is made of inorganic matter, the anti-slip pattern 4 is arranged on the connecting wrapping ring 3, the anti-slip pattern 4 and the connecting wrapping ring 3 are integrally arranged, the anti-slip pattern 4 can be arranged, when a worker inserts another power cable main body 1 into the connecting wrapping ring 3 to enable the two power cable main bodies 1 to form combined connection, the friction between the power cable body 1 and the connection wrapping ring 3 is increased to avoid falling off or sliding.

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.

Claims

1. A heat-insulation and heat-preservation power cable comprises a power cable main body (1), wherein a counterweight ring (2) is arranged on the power cable main body (1), the counterweight ring (2) is connected with the power cable main body (1) in an adhesion manner through an insulating adhesive, a connecting wrapping ring (3) is arranged on the counterweight ring (2), and the connecting wrapping ring (3) and the counterweight ring (2) are arranged integrally;

the method is characterized in that: still include rubber insulation layer (5), rubber insulation layer (5) set up on power cable main part (1) inner wall, rubber insulation layer (5) are connected through the adhesive adhesion with power cable main part (1) inner wall, one side that rubber insulation layer (5) kept away from power cable main part (1) inner wall is provided with aluminium nitride wrapping layer (6), aluminium nitride wrapping layer (6) are connected through the adhesive adhesion with rubber insulation layer (5).

2. A thermally insulated power cable according to claim 1, characterized in that: an inorganic composite material heat-insulating layer (7) is arranged on one side, away from the rubber insulating layer (5), of the aluminum nitride wrapping layer (6), and the inorganic composite material heat-insulating layer (7) is connected with the aluminum nitride wrapping layer (6) in an adhesion mode through an adhesive.

3. A thermally insulated power cable according to claim 2, characterized in that: the inorganic composite material heat-insulating layer (7) is provided with a resin pouring wrapping layer (8) on one side far away from the aluminum nitride wrapping layer (6), and the resin pouring wrapping layer (8) is connected with the inorganic composite material heat-insulating layer (7) in an adhesion manner through an adhesive.

4. A thermally insulated power cable according to claim 3, characterized in that: the resin pouring wrapping layer (8) is provided with a ceramic fiber insulating layer (9) on one side far away from the inorganic composite material heat-insulating layer (7), and the ceramic fiber insulating layer (9) is connected with the resin pouring wrapping layer (8) in an adhesion mode through an adhesive.

5. A thermally insulated power cable according to claim 4, characterized in that: the copper wire (10) is arranged on one side, away from the resin pouring wrapping layer (8), of the ceramic fiber insulating layer (9), and the copper wire (10) is connected with the bottom of the ceramic fiber insulating layer (9).

6. A thermally insulated power cable according to claim 1, characterized in that: the anti-skid packing ring is characterized in that anti-skid patterns (4) are arranged on the connecting packing ring (3), and the anti-skid patterns (4) and the connecting packing ring (3) are arranged integrally.