CN201898001U - Coaxial cable insulated by winding polytetrafluoroethylene circular tube - Google Patents

Abstract

The utility model relates to a polytetrafluoroethylene round tube winding insulated coaxial cable, which is usually used for high-temperature-resistant, high-power, and long-distance communication transmission. The cable is composed of four layers of inner conductor (1), insulator (2), outer conductor (3) and sheath (4) from the inside to the outside, and the inner conductor (1) is a single or A plurality of silver-plated copper wires or copper-clad aluminum wires; the insulator (2) is composed of a plurality of polytetrafluoroethylene hollow round tubes, and a plurality of polytetrafluoroethylene hollow round tubes are wound on the inner conductor (1) to form a winding insulator. The diameter of the hollow tube can reach more than 50mm, and the diameter of the polytetrafluoroethylene round tube wound insulated coaxial cable can reach more than 150mm, so the insulator can be made very thick, which is suitable for high-power transmission.

Description

PTFE round tube winding insulated coaxial cable

(1) Technical field

The utility model relates to a coaxial cable with a low insulating dielectric constant but can be made into a large diameter, which is usually used for high temperature resistance, high power and long-distance communication transmission.

(2) Background technology

At present, the polytetrafluoroethylene insulation of coaxial cables has been realized by wrapping microporous membranes, but it is very difficult to wrap them to a diameter of more than 15mm. With the increasing demand for high-power equipment, high-performance transmission cables are essential.

(3) Contents of the invention

The purpose of the utility model is to overcome the above-mentioned shortcomings, and provide a polytetrafluoroethylene round tube winding insulated coaxial cable which can make the insulator very thick and is suitable for high-power transmission.

The purpose of this utility model is achieved in the following way: a polytetrafluoroethylene round tube winding insulated coaxial cable, the cable is composed of four layers of inner conductor, insulator, outer conductor and sheath in sequence from the inside to the outside. , the inner conductor is a single or multiple silver-plated copper wires or copper-clad aluminum wires; the insulator is composed of a plurality of polytetrafluoroethylene hollow round tubes, and a plurality of polytetrafluoroethylene hollow round tubes are wound on the inner conductor , forming a wound insulator.

The beneficial effects of the utility model are:

The utility model polytetrafluoroethylene round tube winding insulated coaxial cable has greater advantages than similar polytetrafluoroethylene insulation products. The winding insulator is formed by wrapping the inner conductor with multiple hollow tubes, and the diameter of the hollow tube can reach more than 50mm. The diameter of the PTFE round tube wound insulated coaxial cable can be more than 150mm, so the insulator can be made very thick, which is suitable for high-power transmission. Moreover, because the insulator uses a winding structure, it will have good softness, uniform outer body support, and the maximum power is more than 10 times that of conventional PTFE low-density insulated cables.

(4) Description of drawings

Fig. 1 is a schematic view of the front structure of the polytetrafluoroethylene round tube wound insulated coaxial cable of the present invention.

FIG. 2 is a cross-sectional view of FIG. 1 .

Reference signs in the figure:

Inner conductor 1, insulator 2, outer conductor 3, sheath 4.

(5) Specific implementation methods

Referring to Figures 1-2, Figure 1 is a schematic view of the front structure of the utility model polytetrafluoroethylene round tube wound insulated coaxial cable. FIG. 2 is a cross-sectional view of FIG. 1 . It can be seen from Fig. 1 and Fig. 2 that the polytetrafluoroethylene round tube winding insulated coaxial cable of the utility model is composed of four layers of inner conductor 1, insulator 2, outer conductor 3 and sheath 4 in sequence from the inside to the outside. made.

The inner conductor 1 is single or multiple silver-plated copper wires or copper-clad aluminum wires.

The insulator 2 is made of polytetrafluoroethylene, which is a wound insulator in which the polytetrafluoroethylene is first processed into a hollow tube, and then a plurality of polytetrafluoroethylene hollow tubes are uniformly wound on the inner conductor 1 .

The outer conductor 3 can be realized by weaving silver-plated round copper wires or silver-plated flat copper wires or by using longitudinally wrapped copper-plastic composite films or longitudinally wrapped aluminum-plastic foil composite films or corrugated copper tubes;

The sheath 4 can be made of polyperfluoropropylene or polyurethane or polyethylene or polyvinyl chloride according to different use environments and requirements.

Claims (10)

1. A polytetrafluoroethylene round tube winding insulated coaxial cable is characterized in that: the cable consists of an inner conductor (1), an insulator (2), an outer conductor (3) and a sheath (4) from the inside to the outside ) are tightly compounded in four layers; the insulator (2) is composed of a plurality of polytetrafluoroethylene hollow round tubes, and the plurality of polytetrafluoroethylene hollow round tubes are wound on the inner conductor (1) to form a wound insulator. 2. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the inner conductor (1) is a single or multiple silver-plated copper wires or copper-clad aluminum wires. 3. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the outer conductor (3) is braided by silver-plated round copper wires. 4. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the outer conductor (3) is braided by silver-plated flat copper wire. 5. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the outer conductor (3) is longitudinally wrapped with copper-plastic composite film or longitudinally wrapped with aluminum-plastic foil composite film . 6. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the outer conductor (3) is a corrugated copper tube. 7. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the material of the sheath (4) is polyperfluoropropylene. 8. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the material of the sheath (4) is polyurethane. 9. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the material of the sheath (4) is polyethylene. 10. A polytetrafluoroethylene round tube wound insulated coaxial cable according to claim 1, characterized in that: the material of the sheath (4) is polyvinyl chloride.

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