Reactivity control mechanism capable of energy storage in advance

Abstract

The invention provides a reactivity control mechanism capable of energy storage in advance. The mechanism comprises an outer pipe, a solidification seal, an energy storage mechanism and a reactive element. The solidification seal is arranged at the top end of the inner cavity of the outer pipe. The energy storage mechanism is arranged at the bottom end of the inner cavity of the outer pipe, releases potential energy upwards and performs driving action. The reactive element is arranged in the inner cavity of the outer pipe, the bottom end is in contact with the upper end of the energy storage mechanism, and the top end is in contact with the lower end of the solidification seal. The solidification seal has a cold-state solid state and a hot-state liquid state; when the solidification seal is in a cold-state solid state, the solidification seal seals the top of the outer pipe to bear the potential energy of the energy storage mechanism; when the solidification seal is in a hot-state liquid state, the energy storage mechanism releases potential energy upwards and pushes the reactive element to move upwards to the spraying outer pipe. The reactivity control mechanism has the advantagesof no complex moving part, a small system size, long service lifetime and high safety.

Description

technical field [0001] The invention relates to the technical field of nuclear energy engineering, in particular to a pre-storage energy reactivity control mechanism. Background technique [0002] Nuclear reactors have the characteristics of not relying on the external environment (low temperature, sunlight, air), and have great advantages and application prospects in the fields of ocean, space, and aerospace. Different from fixed nuclear reactors on the ground, multi-scenario application reactors are limited by the size and carrying capacity of transportation vehicles, and mobile nuclear power sources must have the characteristics of miniaturization and light weight. At the same time, because the system is difficult to maintain in some application scenarios, the mobile nuclear power supply must also have the characteristics of long-term maintenance-free. [0003] There are two types of traditional reactivity control mechanisms: control rod drive mechanism and rotary drum. ...

AI Technical Summary

Problems solved by technology

Among them, the control rod drive mechanism contains wearing parts such as bearings in the high-temperature and high-irradiation area of ​​the reactor core, which cannot meet the needs of "long-time work"; while the drum control mechanism requires a large turning space, which will increase the reflective layer in the reactor size, which in turn increases the volume of the core and shield, thereby affecting the "small and lightweight" requirements of the reactor

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