Small villiaumite reactor passive residual discharge system based on integrated heat exchanger

Abstract

The invention discloses a small villiaumite reactor passive residual discharge system based on integrated heat exchangers. The small villiaumite reactor passive residual discharge system comprises a reactor core, a hot pool, a cold pool, a cold and hot pool partition plate, three parallel main heat-waste heat integrated heat exchangers, an air cooler and a residual discharge loop pipeline. The main heat-waste heat integrated heat exchanger is adopted to export heat, the waste discharge loop and the secondary loop jointly exchange heat with the working medium of the primary loop in the compact space of the integrated heat exchanger, and the size of the heat exchanger and the miniaturization of the reactor are facilitated. The residual discharge loop adopts gallium which is large in specific heat, high in heat conduction capacity, high in boiling point and low in melting point as a cooling agent, has a good heat exchange characteristic and can be kept in a liquid state under normal operation and accident working conditions. The residual discharge pipeline is made of metal material titanium and has strong corrosion resistance, and the wear-resistant property of the residual discharge pipeline is suitable for the western sand-storm severe area constructed by a small villiaumite reactor; titanium has high specific strength and can be processed into a small-thermal-resistance thin-wall pipeline beneficial to heat dissipation. The invention provides a compact, safe and efficient passive residual discharge system scheme for a small villiaumite reactor.

Description

technical field [0001] The invention relates to the technical field of reactor design, in particular to a passive exhaust system for a small fluoride-salt reactor based on an integrated heat exchanger. Background technique [0002] The fluorine-salt-cooled high-temperature reactor combines the advantages of a variety of fourth-generation reactors, including the molten salt reactor high-temperature and low-pressure molten salt coolant, the high-temperature gas-cooled reactor using coated particle fuel, and the characteristics of the passive safety system of the liquid metal-cooled fast reactor. safety, economy, sustainability and nonproliferation. [0003] In the early stage, the technical research and development of fluorine-salt cooling high-temperature reactors mostly focused on the research and design of large-scale reactors. With the development of small modular reactors, modular design and construction, flexible site selection, strong adaptability and wide application o...

AI Technical Summary

Problems solved by technology

Small-scale fluoride-salt reactors use molten salt as the coolant, and its temperature is relatively high. It is difficult for the traditional water circuit residual drainage system to work normally under normal pressure. At the same time, considering the requirement of compactness, in order to save the space in the reactor, it is not suitable to install the residual drainage system separately. row heat exchanger

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