CN210837283U

CN210837283U - DC-150kV low-impedance high-voltage coaxial cable

Info

Publication number: CN210837283U
Application number: CN201921920947.9U
Authority: CN
Inventors: 范佳林; 高玉敏; 孙德亮; 曹伟; 侯伟亮; 刘名远; 汪真有; 张媛
Original assignee: TIANJIN 609 CABLE CO Ltd
Current assignee: TIANJIN 609 CABLE CO Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-06-23
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to a DC-150kV low impedance high voltage coaxial cable, include to extrude the insulating stranded cable of one deck outside the aramid fiber core and constitute the packing core, weave the first layer inner conductor outward in proper order at the packing core, weave the second layer inner conductor, constitute conductive core around package one deck semi-conductive layer combination, extrude the one deck insulating layer outside the conductive core, around package one deck shielding layer, weave the one deck outer conductor, extrude the one deck sheath. The utility model has the advantages that: the cable can transmit power and signals, has excellent transmission performance and low impedance, adopts a combined form of weaving conductors outside the twisted filling core as a conductive wire core, has good flexibility, and ensures the voltage resistance of the cable by extruding the insulating layer at one time.

Description

DC-150kV low-impedance high-voltage coaxial cable

Technical Field

The utility model relates to a high pressure composite insulation patchcord, a DC-150kV low impedance high voltage coaxial cable promptly is a soft high voltage resistant cable that is used for high voltage resistant impact equipment connected system.

Background

Ordinary high-voltage line is mainly used power transmission, can not carry out signal transmission performance simultaneously, for satisfying withstand voltage and current-carrying capacity requirement, guarantees the conductor cross-section, uses conventional stranded conductor as the conductor core usually, and the conductor specification is great, and insulation thickness is thicker, and the cable external diameter is big, and the compliance is poor, is unfavorable for equipment connected system's operation to use.

Disclosure of Invention

In view of the deficiencies in the prior art, the utility model provides a DC-150kV low impedance high voltage coaxial cable, this cable both can carry out power transmission and can carry out signal transmission, have characteristics such as hardness is little, the impedance is low, electric insulating property is good, high pressure resistant.

The utility model discloses a realize above-mentioned purpose, the technical scheme who takes is: a DC-150kV low-impedance high-voltage coaxial cable is characterized in that: the method comprises the steps of extruding a layer of insulating stranded cable outside an aramid fiber core to form a filling core, sequentially weaving a first layer of inner conductor outside the filling core, weaving a second layer of inner conductor, wrapping a layer of semi-conducting layer to form a conductive wire core, extruding a layer of insulating layer outside the conductive wire core, wrapping a layer of shielding layer, weaving a layer of outer conductor, and extruding a layer of sheath.

The utility model has the advantages that: the conductive wire core structure is formed by the combination of weaving two layers of tough-copper inner conductors outside the twisted filling core and wrapping the cotton tape semi-conductive layer, so that the structural form of the conventional conductive wire core is broken, the outer diameter of the conductive wire core can be ensured, the low-impedance performance of the cable is realized, and the hardness of the cable is reduced.

The conductors in the two layers are woven, so that the cross section of the conductors is increased, the resistance of the conductors is reduced, the heat productivity of the cable during working can be reduced, and the flexibility of the cable is improved.

The semi-conductive cotton tape has the function of homogenizing an electric field, the insulating layer is made of high-pressure polyethylene, and the polyethylene has excellent dielectric strength and better electrical insulation.

The shielding layer adopts a combination form that a tough copper outer conductor is woven outside a hot-melt polyester aluminum composite film, the shielding effectiveness of the cable can be improved by compounding different metal materials, and meanwhile, the hot-melt polyester aluminum composite film can be tightly attached to the surface of the insulating layer by being heated and shrunk, so that the transmission performance of the cable can be improved.

The sheath is made of polyvinyl chloride, has good mechanical environment performance and is soft.

The cable has good insulating property, high voltage resistance, and better transmission property and lower impedance property, and the impedance can reach 150kV of direct current at most, and is 10 omega +/-3 omega.

The cable can transmit power and signals, has excellent transmission performance and low impedance, adopts a combined form of weaving conductors outside the twisted filling core as a conductive wire core, has good flexibility, and ensures the voltage resistance of the cable by extruding the insulating layer at one time.

Drawings

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

fig. 2 is a schematic structural diagram of the filling core of the present invention.

Detailed Description

As shown in fig. 1 and 2, the DC-150kV low-impedance high-voltage coaxial cable comprises a filling core 1, a first inner conductor 2, a second inner conductor 3, a semi-conducting layer 4, an insulating layer 5, a shielding layer 6, an outer conductor 7 and a sheath 8, wherein the filling core 1 is formed by extruding a layer of insulating 1-2 stranded cable outside an aramid core 1-1.

The filling core 1 is sequentially braided with a first inner conductor 2, a second inner conductor 3 and a wrapping semi-conducting layer 4 to form a conductive wire core, and the conductive wire core is sequentially extruded with an insulating layer 5, a shielding layer 6 and an outer conductor 7 to form a sheath 8.

The first layer inner conductor 2, the second layer inner conductor 3 and the outer conductor 7 are all tough pitch copper conductors.

The semi-conducting layer 4 is a semi-conducting cotton tape.

The insulating layer 5 is a high-pressure polyethylene insulating layer.

The shielding layer 6 is a hot-melt polyester aluminum composite film.

The jacket 8 is polyvinyl chloride.

Claims

1. A DC-150kV low-impedance high-voltage coaxial cable is characterized in that: the method comprises the steps of extruding a layer of insulation (1-2) outside an aramid fiber core (1-1) to form a filling core (1), sequentially weaving a first layer of inner conductor (2), weaving a second layer of inner conductor (3) and wrapping a layer of semi-conducting layer (4) outside the filling core (1) to form a conductive wire core, extruding a layer of insulation layer (5) outside the conductive wire core, wrapping a layer of shielding layer (6), weaving an outer layer of outer conductor (7) and extruding a layer of sheath (8).

2. The DC-150kV low impedance high voltage coaxial cable of claim 1, wherein: the first layer of inner conductor (2), the second layer of inner conductor (3) and the outer conductor (7) are all tough pitch copper conductors.

3. The DC-150kV low impedance high voltage coaxial cable of claim 1, wherein: the semi-conductive layer (4) is a semi-conductive cotton tape.

4. The DC-150kV low impedance high voltage coaxial cable of claim 1, wherein: the insulating layer (5) is a high-pressure polyethylene insulating layer.

5. The DC-150kV low impedance high voltage coaxial cable of claim 1, wherein: the shielding layer (6) is a hot-melt polyester aluminum composite film.

6. The DC-150kV low impedance high voltage coaxial cable of claim 1, wherein: the sheath (8) is made of polyvinyl chloride.