Reactor core structure and start-stop control manner thereof

Abstract

The invention relates to a reactor core structure and a control manner of a start-stop reactor thereof. The reactor core structure comprises a fixed fuel component, a mobile fuel component, and a drive mechanism, wherein the fixed fuel component comprises a plurality of first fuel rods that are arranged side by side, the plurality of first fuel rods form a guide hole after being arranged, and a guide cylinder for guiding the mobile fuel component is arranged in the guide hole; the mobile fuel component comprises a plurality of second fuel rods that are arranged side by side, the mobile fuel component can move between a first position and a second position in an axial direction so as to match with the guide cylinder, when the mobile fuel component is at the first position, the mobile fuel component is inserted into the guide hole, when the mobile fuel component is at the second position, the mobile fuel component leaves the guide hole; and the drive mechanism is matched with the mobilefuel component and provides the mobile fuel component with a driving force that enables the mobile fuel component to move toward the first position, and the mobile fuel component also can move to reset at the second position, so that a small reactor core can be conveniently controlled to start and stop.

Description

technical field [0001] The invention relates to the field of nuclear power, more specifically, to a reactor core structure and a control method for starting and stopping the reactor. Background technique [0002] As a clean, efficient and safe green energy, nuclear energy has received great attention from modern society. The development of safe nuclear energy has become an important strategy for countries to solve energy shortages, environmental degradation and climate warming. From a global perspective, the application fields of nuclear energy continue to expand, and the size of nuclear reactors that provide power tends to be miniaturized, from large-scale commercial pressurized water reactors for power stations, to marine nuclear power reactors for ship power, and to islands. Offshore floating reactors are shrinking in size, and the emergence of nuclear reactors of various sizes has also made nuclear energy applications more flexible and diverse. [0003] For common pres...

AI Technical Summary

Problems solved by technology

[0007] The control rod assembly plays an irreplaceable role in the control of the reactivity of the large reactor core and the process of starting and stopping the reactor, but for miniaturized reactors, and even smaller micro-reactors, the method of control rods, on the one hand, will bring extreme Great processing difficulty, on the other hand, it will lead to an increase in the inhomogeneity of the neutron flux distribution, which is not applicable

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