CN210136728U - Double-layer insulated cable - Google Patents

Abstract

The utility model relates to a double-deck insulated cable, outside-in include outer parcel layer, anticorrosive coating, outer insulating layer, fire-retardant layer, filling layer, interior wrapping layer, inner insulating layer and cable core in proper order, the filling layer is the yarn that blocks water, it is provided with the yarn wrapping layer that blocks water to block water between yarn and the fire-retardant layer, block water the yarn wrapping layer with it weaves the armor to be provided with the copper wire between the fire-retardant layer, the material of anticorrosive coating is anticorrosive rubber, anticorrosive rubber closely laminates with outer parcel layer and outer insulating layer respectively, outer insulating layer with inner insulating layer is polyvinyl chloride. The utility model has the advantages of good insulation effect, durable use and long service life.

Description

Double-layer insulated cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a double-deck insulated cable.

Background

The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is a conducting wire for transmitting power or information from one place to another place, and the cable comprises a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

The cable has aging phenomenon in long-term use, and according to incomplete statistics, more than 85% of electric fires in domestic and foreign building fields are caused by short circuit and ignition of circuits due to aging of wires and cables. The reform and the opening of China are nearly 40 years till now, the phenomena of sheath and insulation aging of hidden wires used in a large number of buildings occur, and the hidden wires are urgently required to be replaced; the insulating processing of cable is not in place and is an important factor that leads to striking sparks, and the insulating cable of present stage mostly adopts double-deck insulation, compares in early stage, and the performance has obtained obvious promotion, but because actual in service behavior is different, especially uses under the great scene of steam, can accelerate the outward appearance of cable to corrode, causes the damage to the insulating layer, causes phenomenons such as electric leakage striking sparks.

Disclosure of Invention

The utility model provides a to the not enough of above-mentioned prior art, the utility model provides an insulating effectual, resistant long-lived double-deck insulated cable.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a double-deck insulated cable, outside-in includes outer parcel layer, anticorrosive coating, outer insulating layer, fire-retardant layer, filling layer, interior parcel, inner insulating layer and cable core in proper order, the filling layer is the yarn that blocks water, it is provided with the yarn parcel that blocks water between yarn and the fire-retardant layer to block water, the yarn parcel that blocks water with it weaves the armor to be provided with the copper wire between the fire-retardant layer, the material of anticorrosive coating is anticorrosive rubber, anticorrosive rubber closely laminates with outer parcel layer and outer insulating layer respectively, outer insulating layer with inner insulating layer is polyvinyl chloride.

When using, the interior wrapping layer is used for wrapping up the cable core, the outer wrapping layer is used for wrapping up the protection to whole cable layer, interior insulating layer and outer insulating layer can be effectively to the cable core with external insulating, when arranging the cable in service environment, the anticorrosive coating can resist the inside corruption of a large amount of steam and organic matter to the cable, prolong its life, reduce the probability that damaged cable core leaks outward, anticorrosive rubber is reaching under anticorrosive prerequisite, the bending space has been provided for the cable, guarantee the pliability of cable, fire-retardant layer is used for organizing external temperature and flame and injures the cable core and the emergence accident, the yarn that blocks water can absorb the biggest self 200 times moisture, can enough place the erosion of external steam, can absorb the steam between the inside cable layer again, the condition that the cable core met water and punctures the cable layer has been reduced. The utility model has the advantages of simple structure, under the insulating prerequisite of assurance, provide anticorrosive fire-retardant function, solved waterproof and inside problem of absorbing water simultaneously, the effectual normal use who ensures the cable improves the security.

Preferably, the flame-retardant layer is flame-retardant polypropylene.

Therefore, the flame-retardant polypropylene has good flame-retardant property and can provide sufficient and effective guarantee for the normal use of the cable.

Preferably, the thickness ratio of the anticorrosive layer to the outer coating layer is 4: 3.

Therefore, the anti-corrosion effect can be optimal, the thickness of the anti-corrosion layer is guaranteed, and the flexibility of the cable is not lost.

Preferably, the thickness of the water blocking yarn is larger than the diameter of the inner wrapping layer.

Thus, the amount of water-blocking yarn is sufficient to ensure the waterproof property.

Preferably, tin is coated on the copper wire braided armor layer.

Like this, can enough promote the antioxidant property of copper wire, can place the copper wire again and sink into other cable layers, guarantee the compactness of water-blocking layer.

Preferably, the number of the cable cores is 2.

Thus, the conductivity is improved.

The utility model has the advantages that:

a double-deck insulated cable, adopt the insulation treatment of double-insulation layer, the effectual insulating effect who ensures the cable core, the fire-retardant layer of cooperation, anticorrosive coating and the yarn that blocks water can use complicated service environment, ensure that it receives complicated abominable circumstances such as high temperature, steam erosion can both ensure normal use, the effectual electric conductivity that has kept the cable.

Drawings

Fig. 1 is a schematic structural view of a double-layer insulated cable according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1, a double-deck insulated cable includes outer parcel layer 1, anticorrosive coating 2, outer insulating layer 3, fire-retardant layer 4, filling 5, interior parcel 6, inner insulating layer 7 and cable core 8 in proper order from the outside to the inside, 5 layers of filling are the yarn that blocks water, it is provided with yarn parcel 51 that blocks water to block water between yarn and the fire-retardant 4 layers, yarn parcel 51 that blocks water with it weaves armor 52 to be provided with the copper wire between the fire-retardant layer 4, anticorrosive coating 2's material is anticorrosive rubber, anticorrosive rubber closely laminates with outer parcel layer 1 and outer insulating layer 3 respectively, outer insulating layer 3 with inner insulating layer 7 is polyvinyl chloride.

When using, the interior wrapping layer is used for wrapping up the cable core, the outer wrapping layer is used for wrapping up the protection to whole cable layer, interior insulating layer and outer insulating layer can be effectively to the cable core with external insulating, when arranging the cable in service environment, the anticorrosive coating can resist the inside corruption of a large amount of steam and organic matter to the cable, prolong its life, reduce the probability that damaged cable core leaks outward, anticorrosive rubber is reaching under anticorrosive prerequisite, the bending space has been provided for the cable, guarantee the pliability of cable, fire-retardant layer is used for organizing external temperature and flame and injures the cable core and the emergence accident, the yarn that blocks water can absorb the biggest self 200 times moisture, can enough place the erosion of external steam, can absorb the steam between the inside cable layer again, the condition that the cable core met water and punctures the cable layer has been reduced. The utility model has the advantages of simple structure, under the insulating prerequisite of assurance, provide anticorrosive fire-retardant function, solved waterproof and inside problem of absorbing water simultaneously, the effectual normal use who ensures the cable improves the security.

In this embodiment, the flame retardant layer 4 is flame retardant polypropylene.

Therefore, the flame-retardant polypropylene has good flame-retardant property and can provide sufficient and effective guarantee for the normal use of the cable.

In this embodiment, the thickness ratio of the anticorrosive layer 2 to the outer coating layer 1 is 4: 3.

Therefore, the anti-corrosion effect can be optimal, the thickness of the anti-corrosion layer is guaranteed, and the flexibility of the cable is not lost.

In this embodiment, the thickness of the water blocking yarn is larger than the diameter of the inner wrapping layer 6.

Thus, the amount of water-blocking yarn is sufficient to ensure the waterproof property.

In this embodiment, the copper wire braided armor layer 52 is coated with tin.

Like this, can enough promote the antioxidant property of copper wire, can place the copper wire again and sink into other cable layers, guarantee the compactness of water-blocking layer.

In this embodiment, there are 2 cable cores 8.

Thus, the conductivity is improved.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims (6)

1. The utility model provides a double-deck insulated cable, its characterized in that, outside-in includes outer parcel layer, anticorrosive coating, outer insulating layer, fire-retardant layer, filling layer, interior wrapping layer, inner insulating layer and cable core in proper order, the filling layer is the yarn that blocks water, it is provided with the yarn wrapping layer that blocks water to block water between yarn and the fire-retardant layer, block water the yarn wrapping layer with it weaves the armor to be provided with the copper wire between the fire-retardant layer, the material of anticorrosive coating is anticorrosive rubber, anticorrosive rubber closely laminates with outer parcel layer and outer insulating layer respectively, outer insulating layer with inner insulating layer is polyvinyl chloride.

2. The double-layer insulated cable according to claim 1, wherein said flame retardant layer is flame retardant polypropylene.

3. The double-layer insulated cable according to claim 1, wherein the ratio of the thickness of the corrosion protection layer to the thickness of the outer covering is 4: 3.

4. The double-insulated cable of claim 1, wherein the thickness of the water-blocking yarn is greater than the diameter of the inner wrapping layer.

5. A double insulated cable according to claim 1, characterized in that the copper wire braided armour layer is coated with tin.

6. The double-insulated cable according to claim 1, wherein said core comprises 2.

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