Reactor core

Abstract

The embodiment of the present invention provides a reactor core. The reactor core comprise: a core grid arranged to include a plurality of unit grids connected to each other; a neutron source assemblyarranged in the unit grids and providing neutrons to start fission reaction of the reactor core; and fuel assemblies arranged in the unit grids, wherein each fuel assembly comprises a first fuel assembly, a second fuel assembly and a third fuel assembly; the first fuel assembly provides fuel and controls the fission reaction rate; the second fuel assembly provides fuel and compensates for remaining reactivity of the core; and the third fuel assembly provides fuel; and the plurality of first fuel assemblies positioned adjacent to each other in the core grids are provided as a control bundle, and the plurality of second fuel assemblies are provided around each of the control bundles. The reactor core provided by the embodiment of the invention has the characteristics of simple structure, high safety and suitability for ships.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of nuclear reactors, in particular to a core. Background technique [0002] The light water reactor is a kind of reactor with high safety and can be installed modularly. In some coastal areas, the light water reactor can also be considered to be applied to the ship, so that the reactor can be moved and suitable for various functions. However, limited by the structure of the existing core, there is still no commercially available marine light water reactor. [0003] The control system of the existing reactor core mostly uses solid control systems such as control rods and neutron poison rods combined with a chemical control system composed of liquid neutron poisons to complete reactivity control. This kind of reactor using liquid neutron poisons During the operation of the core, especially during offshore operation, the liquid neutron poison may be diluted due to accidents, which may bri...

AI Technical Summary

Problems solved by technology

However, limited by the structure of the existing core, there is still no commercially available marine light water reactor

[0003] The control system of the existing reactor core mostly uses solid control systems such as control rods and neutron poison rods combined with a chemical control system composed of liquid neutron poisons to complete reactivity control. This kind of reactor using liquid neutron poisons During the operation of the core, especially during the operation at sea, the liquid neutron poison may be diluted due to accidents, thus posing risks

On the other hand, the existing core structure is relatively complex, and it is difficult to apply it in a commercial light water reactor. The complex core structure also leads to a relatively complex structure of the corresponding light water reactor, and it is difficult to select a suitable ship for loading

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