CN213211797U - Compact composite overhead cable - Google Patents

Abstract

The utility model discloses a compound aerial [ insulated ] cable of compact type belongs to aerial [ insulated ] cable technical field, including the cable core, cable core surface cladding has the insulating layer, insulating layer surface cladding has the shielding layer, shielding layer surface cladding has super hydrophobic layer, super hydrophobic layer surface cladding has the fire-retardant layer of rubber. The utility model relates to a compound aerial [ insulated ] cable of compact type can derive conductor and optical fiber conductor heat, and the heat through deriving of ice that has the knot on the cable can accelerate the ice-cube to melt and can not influence the cable power transmission, has higher insulating nature simultaneously, can improve the life of cable, also can shield external signal's interference, also has higher water delivery nature, can avoid inside external water infiltration cable, effectively improves the life of cable.

Description

Compact composite overhead cable

Technical Field

The utility model relates to an overhead cable technical field especially relates to a compound overhead cable of compact type.

Background

Currently, the need for rapid transfer of data and information has increased dramatically with reliance on computers, word processors, telefax, sensors and communication equipment. The advent of new technologies has made this area of equipment online and networked possible, resulting in the integrated development of communication systems. The use of these systems is increasing in certain areas such as high-rise buildings, ships, aircraft, trains, drilling platforms and mines. The overhead cable is mainly used for long-distance power transmission and signal transmission, so that the overhead cable needs to be turned over and over the mountain during installation, is overhead outdoors and is exposed in cold air, and when ice and snow covered on the surface of a power transmission line reach a certain degree, the electric wire can be broken, so that influence is brought to normal power transmission. To connect these electronic components, a large number of wires and cables are used in these structures and fields. Power cable and signal cable disconnect-type come out in the installation and waste time, hard phenomenon, and prior art can produce many aerial [ insulated ] cable installation backs simultaneously, and the phenomenon in disorder appears, and maintenance cycle is short, produces simultaneously easily and freezes and snow phenomenon. The overhead cable does not have the heating function, and the manual snow and ice removing and deicing mode is mostly adopted to remove the ice and snow at present, so that the effect is not good, the danger is high, the labor intensity is high, the operation efficiency is low, the overhead cable usually adopts a copper conductor, the economical efficiency of the conductor is not considered, and the price is higher.

Patent No. 201520151033.6 discloses an aerial cable. This aerial [ insulated ] cable includes cable conductor, shielding layer and conductor insulation layer, the shielding layer set up in outside the cable conductor, conductor insulation layer set up in outside the shielding layer, be provided with the enhancement core in the cable conductor, the cable conductor with be provided with the enhancement layer between the shielding layer, the enhancement layer with be provided with the elastic layer between the cable conductor. The utility model provides an overhead cable which can increase the tensile strength of the cable through the reinforced core and the reinforced layer, and the elastic layer can prevent the extrusion to the cable conductor; has the advantages of low cost, simple structure and wide application range.

The prior art aerial cable has the following disadvantages: 1. this overhead cable can not effectively get rid of the ice that the surface condenses, and the security that causes the cable power transmission is poor, easily causes cable fracture or short circuit, influences normal power transmission, causes very big loss to transmission of electricity work, and this overhead cable bulk strength is relatively poor simultaneously, when ice sheet weight surpassed the bearing scope that transmission line designed, will make the circuit destroy because of bearing overweight, reduces the availability factor, for this reason, we provide a compound overhead cable of compact type.

SUMMERY OF THE UTILITY MODEL

The utility model provides a compound aerial [ insulated ] cable of compact type can derive conductor and optical fiber conductor heat, and the heat through deriving of ice that has the knot on the cable can accelerate the ice-cube to melt and can not influence the cable power transmission, has higher insulating nature simultaneously, can improve the life of cable, also can shield external signal's interference, also has higher water delivery nature, can avoid inside external water infiltration cable, effectively improves the life of cable.

The utility model provides a specific technical scheme as follows:

the utility model provides a pair of compound aerial [ insulated ] cable of compact type, including the cable core, cable core surface cladding has the insulating layer, insulating layer surface cladding has the shielding layer, shielding layer surface cladding has super hydrophobic layer, super hydrophobic layer surface cladding has the fire-retardant layer of rubber.

Optionally, cable core internally mounted has the conductor, the winding of conductor surface has fiber conductor and fiber conductor to have a plurality ofly, the cable core surface cladding has first silica gel heat-conducting layer, the fire-retardant layer internally mounted of rubber has second silica gel heat-conducting layer, the inside fixedly connected with silica gel heat-conducting rod of second silica gel heat-conducting layer and the silica gel heat-conducting rod other end and first silica gel heat-conducting layer fixed connection, the silica gel heat-conducting rod has a plurality ofly.

Optionally, the rubber flame-retardant layer is fixedly connected with a plurality of reinforcing ribs.

Optionally, the insulating layer is made of a cross-linked polyethylene material.

Optionally, the super-hydrophobic layer is made of a polytetrafluoroethylene material.

The utility model has the advantages as follows:

the embodiment of the utility model provides a compound aerial [ insulated ] cable of compact type:

1. the cable comprises a cable core, an insulating layer, a shielding layer, a super-hydrophobic layer and a rubber flame-retardant layer, wherein conductors and optical fiber conductors are arranged in the cable core, a plurality of optical fiber conductors are wound on the surfaces of the conductors, the conductors and the optical fiber conductors are matched with each other, so that the same cable is used for power transmission and signal transmission, different cables are not required to be separately installed, the installation process is time-saving and labor-saving, the use is convenient, and the maintenance is convenient, meanwhile, a first heat-conducting silica gel layer is coated on the outer surface of the cable core, the first heat-conducting silica gel layer is connected with a second heat-conducting silica gel layer in the rubber flame-retardant layer through a heat-conducting silica gel rod, when the cable is used, the heat of the conductors and the optical fiber conductors can be led out through the first heat-conducting silica gel layer and is transmitted to the inside of the second heat-conducting silica, the super-hydrophobic layer is made for the polytetrafluoroethylene material, and the super-hydrophobic layer that polytetrafluoroethylene made has not in the characteristics that the water melts, can effectively carry on waterproofly, avoids inside the water infiltration cable, effectively protects the cable, and the fire-retardant layer internally mounted of rubber has a plurality of strengthening ribs simultaneously, can effectively improve the bulk strength of cable through the strengthening rib, can not cause the cable to damage because of the ice layer process on surface, can effectively improve cable life.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a compact composite overhead cable according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a heat conductive silica gel layer of a compact composite overhead cable according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a reinforcing rib of a compact composite overhead cable according to an embodiment of the present invention.

In the figure: 1. a cable core; 2. an insulating layer; 3. a shielding layer; 4. a super-hydrophobic layer; 5. a rubber flame retardant layer; 6. A first heat-conducting silica gel layer; 7. a thermally conductive silicone rod; 8. a second heat-conducting silica gel layer; 9. a conductor; 10. an optical fiber conductor; 11. and (5) reinforcing ribs.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, 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 efforts belong to the protection scope of the present invention.

A compact composite overhead cable according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 3.

Referring to fig. 1-3, the embodiment of the utility model provides a compact type composite overhead cable, including cable core 1, 1 surface cladding of cable core has insulating layer 2, 2 surface claddings of insulating layer have shielding layer 3, 3 surface claddings of shielding layer have super hydrophobic layer 4, 4 surface claddings of super hydrophobic layer have the fire-retardant layer of rubber 5.

The cable has higher insulating property through the insulating layer 2, the service life of the cable can be prolonged, the interference of external signals can be shielded through the shielding layer 3, the cable also has higher water transmission performance through the super-hydrophobic layer 4, the external water can be prevented from permeating into the cable, and the service life of the cable is effectively prolonged.

Referring to fig. 2, 1 internally mounted of cable core has conductor 9, the winding of conductor 9 surface has optical fiber conductor 10 and optical fiber conductor 10 to have a plurality ofly, 1 surface cladding of cable core has first silica gel heat-conducting layer 6, 5 internally mounted on the fire-retardant layer of rubber has second silica gel heat-conducting layer 8, 8 internal face fixedly connected with silica gel heat-conducting rod 7 and the 7 other ends of silica gel heat-conducting rod and 6 fixed connection of first silica gel heat-conducting layer of second silica gel heat-conducting layer, silica gel heat-conducting rod 7 has a plurality ofly.

Illustratively, when the cable is used, the heat of the conductor 9 and the optical fiber conductor 10 can be led out through the first silica gel heat conduction layer 6 and transmitted to the inside of the second silica gel heat conduction layer 8 through the heat conduction silica gel rod 7, and the heat led out by the ice on the cable can accelerate the melting of ice blocks and can not affect the power transmission of the cable.

Referring to fig. 3, a plurality of reinforcing ribs 11 are fixedly connected to the inside of the rubber flame-retardant layer 5.

By way of example, the reinforcing ribs 11 can effectively improve the overall strength of the cable, the cable cannot be damaged due to the ice layer process on the surface, and the service life of the cable can be effectively prolonged.

Referring to fig. 1, the insulating layer 2 is made of a cross-linked polyethylene material.

In the illustrated example, the cable using the cross-linked polyethylene as the insulation has higher heat resistance than polyvinyl chloride, can be used for a long time at 90 ℃, has the heat-resistant temperature of the cross-linked polyethylene cable material during short circuit reaching up to 250 ℃, has high insulation resistance and small dielectric loss tangent, basically does not change along with the change of temperature, has good wear resistance and environmental stress cracking resistance, generates carbon dioxide and water once the cross-linked polyethylene is burnt, generates harmful gas of hydrogen chloride when the PVC cable is burnt, and has the density which is about 40 percent lower than that of the PVC, thereby obviously reducing the quality of overhead lines, and the cable has good insulation effect and long service life through the insulating layer 2 supported by the cross-linked polyethylene.

Referring to fig. 1, the super-hydrophobic layer 4 is made of teflon.

In the example, the polytetrafluoroethylene has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, is almost insoluble in all solvents, and the super-hydrophobic layer 4 made of the polytetrafluoroethylene has the characteristic of not being melted in water, can effectively prevent water, prevents water from seeping into the cable, and effectively protects the cable.

When in use, the cable consists of a cable core 1, an insulating layer 2, a shielding layer 3, a super-hydrophobic layer 4 and a rubber flame-retardant layer 5, a conductor 9 and optical fiber conductors 109 are arranged in the cable core 1, a plurality of optical fiber conductors 109 are wound on the surface of the conductor 9, the conductor 9 is matched with the optical fiber conductors 109, so that the same cable is used for power transmission and signal transmission, different cables do not need to be separately installed, the installation process is time-saving and labor-saving, the use is convenient, and the maintenance is convenient, meanwhile, the outer surface of the cable core 1 is coated with a first heat-conducting silica gel layer 6, the first heat-conducting silica gel layer 6 is connected with a second heat-conducting silica gel layer 8 in the rubber flame-retardant layer 5 through a heat-conducting silica gel rod 7, when the cable is used, the heat of the conductor 9 and the optical fiber conductors 109 can be led out through the first heat-conducting silica gel layer and is transmitted into the second heat-, the cable core 1 is coated with the insulating layer 2 on the outer surface, the insulating layer 2 is coated with the shielding layer 3 on the outer surface, the insulating layer 2 is made of crosslinked polyethylene material, the crosslinked polyethylene as the insulating cable has higher heat resistance than polyvinyl chloride and can be used for a long time at 90 ℃, the heat resistance temperature of the crosslinked polyethylene cable material during short circuit can reach 250 ℃ at most, the insulating resistance is high, the dielectric loss tangent is small, the cable is basically not changed along with the change of the temperature, the cable has good wear resistance and environmental stress cracking resistance, carbon dioxide and water are generated once the crosslinked polyethylene is burnt, hydrogen chloride harmful gas is generated during the burning of the PVC cable, in addition, the density of the crosslinked polyethylene is about 40 percent less than that of the PVC, the quality of an overhead line can be obviously reduced, the insulating effect of the cable is good through the insulating layer 2 supported by the crosslinked polyethylene, the service life is long, and the interference of external signals to the cable can be shielded through the shielding layer 3, improve the result of use of cable, the inside cladding of rubber flame retardant coating 5 has super hydrophobic layer 4 simultaneously, super hydrophobic layer 4 is made for the polytetrafluoroethylene material, polytetrafluoroethylene has the characteristics of antiacid alkali-resistant, resistant various organic solvents, almost not soluble in all solvents, super hydrophobic layer 4 made through polytetrafluoroethylene has the characteristics of not melting in the water phase, can effectively carry out waterproofly, avoid inside the water infiltration cable, effectively protect the cable, 5 internally mounted of rubber flame retardant coating simultaneously have a plurality of strengthening ribs 11, can effectively improve the bulk strength of cable through strengthening rib 11, can not cause the cable to damage because of the ice layer process on surface, can effectively improve cable life.

The utility model relates to a compact composite overhead cable, which comprises a cable core 1; 2. an insulating layer; 3. a shielding layer; 4. a super-hydrophobic layer; 5. a rubber flame retardant layer; 6. a first heat-conducting silica gel layer; 7. a thermally conductive silicone rod; 8. a second heat-conducting silica gel layer; 9. a conductor; 10. an optical fiber conductor; 11. the ribs and the parts are all standard parts or parts known to the person skilled in the art, the structure and the principle of which are known to the person skilled in the art by means of technical manuals or by means of routine experimentation.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (5)

1. The utility model provides a compound aerial [ insulated ] cable of compact type, includes cable core (1), its characterized in that, cable core (1) surface cladding has insulating layer (2), insulating layer (2) surface cladding has shielding layer (3), shielding layer (3) surface cladding has super hydrophobic layer (4), super hydrophobic layer (4) surface cladding has rubber flame retardant coating (5).

2. The compact composite overhead cable of claim 1, characterized in that, cable core (1) internally mounted has conductor (9), the winding of conductor (9) surface has optic fibre conductor (10) and optic fibre conductor (10) to have a plurality ofly, cable core (1) surface cladding has first silica gel heat-conducting layer (6), rubber fire-retardant layer (5) internally mounted has second silica gel heat-conducting layer (8), second silica gel heat-conducting layer (8) inside face fixedly connected with silica gel heat-conducting rod (7) and silica gel heat-conducting rod (7) other end and first silica gel heat-conducting layer (6) fixed connection, silica gel heat-conducting rod (7) have a plurality ofly.

3. Compact composite overhead cable according to claim 1, wherein the rubber flame retardant layer (5) has a plurality of ribs (11) fixedly connected to the inside thereof.

4. Compact composite overhead cable according to claim 1, characterized in that the insulating layer (2) is made of cross-linked polyethylene material.

5. Compact composite overhead cable according to claim 1, characterized in that the super-hydrophobic layer (4) is made of teflon.

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