Double-loop heat dissipation system based on full superconducting tokamak nuclear fusion experimental device

Abstract

The invention relates to the field of heat dissipation and cooling, in particular to a double-loop heat dissipation system based on a full-superconducting Tokamak nuclear fusion apparatus. The double-loop heat dissipation system comprises: an open recirculating cooling column for providing cooling water; a cooling tank positioned in the bottom of the open recirculating cooling column and used forcollecting cooling water; an external recirculating pipe for connecting the cooling tank and the recirculating cooling column to recirculate the cooling water; an internal recirculating pipe connectedwith a part, under cooling, of the full-superconducting Tokamak nuclear fusion apparatus and used to provide recirculating cooling water for the full-superconducting Tokamak nuclear fusion apparatus;and a heat exchanger for exchanging heat between the external recirculating pipe and the internal recirculating pipe. The cooling water recirculating pipe and internal recirculating pipe of the cooling column are separated; the heat exchanger helps provide heat exchanging between the internal and external recirculating pipes, cleanliness of the cooling water in the internal recirculating pipe isguaranteed, and the service lives of the pipes and that of the full-superconducting Tokamak nuclear fusion apparatus are extended.

Description

technical field [0001] The invention relates to the field of heat dissipation and cooling, in particular to a dual-loop heat dissipation system based on a fully superconducting tokamak nuclear fusion experimental device. Background technique [0002] EAST (Experimental advanced superconducting tokamak, full superconducting tokamak nuclear fusion experimental device) is a national "Ninth Five-Year" major scientific project officially approved by the National Development Planning Commission for the development of stable, safe and efficient operation of advanced tokamak. Experimental research on the basic physics of fusion reactors, and when the nuclear fusion reaction is realized, the temperature may reach nearly 100 million degrees Celsius, so a cooling system is required to cool the device. [0003] The existing cooling methods all use an open single-loop water cooling system, which will cause the dissolved oxygen in the cooling water to be close to saturation, which is the ...

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Problems solved by technology

[0003] The existing cooling methods all use an open single-loop water-cooling system, which will cause the dissolved oxygen in the cooling water to be close to saturation, which is the main cause of chemical corrosion of metals; and the cooling water is in contact with the air, absorbing sand and dust in the atmosphere , microorganisms and spores, increase the sludge in the pipeline, and sufficient oxygen content and nutrients are conducive to the growth of bacteria and algae

These increase and deposit the slime on the inner wall of the pipeline, causing slime or soft scale hazards

The direct harm brought by dirt deposition is the decrease of the heat transfer coefficient, which makes the heat absorbed by the internal components of the device unable to be effectively transferred, causing local ablation, overheating deformation and other problems of the internal components of the device, resulting in damage to the internal components

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