A long-distance transportable air-cooled small reactor and its safety control method

Abstract

The invention discloses a long-distance transportable gas-cooled small reactor and a safety control method thereof. The gas-cooled small reactor is a supercritical carbon dioxide high-temperature gas-cooled reactor, comprising several independent subcritical modules, and each subcritical module includes a sealing A fuel assembly, a fuel element is loaded in the sealed fuel assembly, and a fission nuclear reaction is generated in the fuel element; the fuel element adopts composite silicon carbide as a cladding, and the gas-cooled small reactor adopts carbon dioxide in a supercritical state as a coolant to cool The agent enters from the bottom of the sealed fuel assembly and comes out from the top, and convective heat transfer occurs with the fuel element, and finally the carbon dioxide transfers the heat to the thermoelectric conversion system, thereby realizing the conversion of thermal energy into electrical energy. The separation-assembly safety control method can effectively improve the safety of the supercritical carbon dioxide-cooled high-temperature gas-cooled reactor, and avoid the occurrence of critical accidents during transportation, so that the gas-cooled small reactor proposed by the present invention is very suitable for long-distance transportation. .

Description

technical field [0001] The invention relates to the field of nuclear engineering, in particular to a long-distance transportable air-cooled small reactor and a safety control method thereof. Background technique [0002] If earthquakes, floods, and strong winds occur in remote areas, the local power system will be paralyzed, which is not conducive to the rescue of personnel and infrastructure reconstruction in the affected areas. In order to urgently restore power in disaster-stricken areas that are not suitable for diesel engine operation (for example, facing serious situations such as flooding and insufficient oxygen in the air), it is necessary to deploy small nuclear power plants in these areas. Because the components of the high-temperature gas-cooled reactor cooled by supercritical carbon dioxide in the present invention are fully enclosed, there is no fear of flooding. Because the fission reaction does not require oxygen to participate, the lack of oxygen in the air ...

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Problems solved by technology

[0003] However, the existing technology cannot realize the rapid transport by helicopter

Because the volume of the current high-temperature gas-cooled reactor is huge, the hexahedron assembly of the existing 250 MW high-temperature gas-cooled reactor is as high as 300 cubic meters, which causes most of the existing helicopters in my country to be unable to directly transport it. Therefore, the present invention proposes a Air-cooled reactors that are small and can be transported over long distances to be able to power remote disaster-affected areas during emergencies

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