Temperature-controlled coaxial refrigeration cable

Abstract

The invention discloses a temperature-controlled coaxial refrigeration cable, comprising a cable core; the cable core comprises an inner conductor and an outer conductor outside the inner conductor, the inner conductor is a hollow metal tube, and the outer conductor is a metal strip that is longitudinally wrapped and welded into a tubular structure; a plurality of insulating spacers for supportingare disposed between the inner conductor and the outer conductor in a radial direction of the cable, the inner conductor and the outer conductor form a coaxial structure, and a flow hole is formed inthe insulating space; coolants are filled inside the inner conductor and between the inner conductor and the outer conductor, and an outer sheath is arranged on the surface of the outer conductor. The cable is large in transmission capacity, small in heat generation, controllable in cable temperature, and good in flexibility.

Description

technical field [0001] The invention relates to a cable, in particular to a temperature-controlled coaxial refrigeration cable, which belongs to the technical field of cable manufacturing. Background technique [0002] The data network center is a comprehensive and comprehensive solution provided by the data center to users. It provides professional services for government Internet access, enterprise Internet access, and enterprise IT management, enabling enterprises and individuals to quickly conduct business with the help of the network. However, when the host computer in the network center is working, High energy consumption requires cables with small outer diameter and high transmission power to provide power supply; similarly, in other aspects, such as nuclear power plant construction, due to the special environment of nuclear power plants, it is also necessary to use cables that are resistant to radiation, high and low temperature, high transmission power, Cables with ...

AI Technical Summary

Problems solved by technology

[0004] 1. Existing solutions cannot accurately adjust the working temperature and carrying capacity of cables in a wide range, and it is also difficult to make appropriate adjustments according to the needs of equipment

[0005] 2. In order to increase the ampacity of the cable, it is mainly by increasing the cross-sectional area of ​​the conductor to increase the ampacity of the conductor. However, increasing the cross-sectional area of ​​the conductor not only increases the cost, but also increases the outer diameter of the finished cable, which not only occupies the limited surrounding space. Space, also not conducive to the laying of cables

[0006] 3. In order to increase the current carrying capacity of the cable, the insulation and sheath materials of the cable will be replaced with materials with high temperature resistance and good environmental performance. In a higher temperature working environment, the service life of the cable will also be shortened, which is not conducive to the long-term stable operation of the cable

[0007] 4. The conductor is directly immersed in the liquid for cooling, but this method requires two conductors to be placed in two liquid containers or two liquid pipes to form a circuit. Repeated construction is required during installation, and the cost of cable laying is high.

[0008] 5. Put a liquid tube inside the stranded conductor of the cable, and indirectly cool the conductor by adding cooling liquid in the liquid tube, but the cooling of this structure will be limited by the material of the tube. Because of the indirect cooling, the conductor and the cooling liquid cannot be in direct contact. The cooling effect will also be greatly reduced. At the same time, adding a liquid tube in the stranded conductor will also increase the outer diameter of the finished cable and affect the bendability of the cable.

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