Molten alloy electrode alkali metal thermoelectric conversion nuclear reactor system

Abstract

The invention discloses a molten alloy electrode alkali metal thermoelectric conversion nuclear reactor system, which belongs to the technical field of nuclear reactor engineering and comprises a reactor, a high-temperature heat exchanger, an electrode chamber, a load, a first heat regenerator, a sodium distillation separation chamber, a second heat regenerator, a condenser and an electromagnetic pump. An outlet and an inlet of the reactor are respectively connected with an inlet and an outlet of the high-temperature heat exchanger; The electrode chamber comprises a liquid sodium electrode chamber, a BASE and a molten alloy electrode chamber; Two ends of the load are respectively connected with the liquid sodium electrode chamber and the molten alloy electrode chamber; The electromagnetic pump is arranged between a heat absorption side inlet of the second heat regenerator and a heat release side outlet of the condenser; A heat absorption side outlet of the second heat regenerator is connected with an inlet of the liquid sodium electrode chamber; And the sodium distillation separation chamber is arranged in the high-temperature heat exchanger. The molten alloy and the liquid sodium are used as cycle working media, the activity difference between the molten alloy and the liquid sodium is used as driving force, the high-performance index can be achieved at the low temperature, and the system reliability is improved.

Description

technical field [0001] The invention belongs to the technical field of nuclear reactor engineering, and in particular relates to a nuclear reactor system using molten alloy and liquid sodium as electrodes for alkali metal thermoelectric conversion. Background technique [0002] Alkali metal thermoelectric conversion devices have no moving parts, have the characteristics of less operation and maintenance, low vibration and noise, good system sealing, and high reliability. They have been used in military fields such as aviation and nuclear power. However, the driving force for the transportation of alkali metal in BASE in traditional alkali metal thermoelectric conversion devices is a sufficiently large pressure difference on both sides, which requires that the operating temperature of the device is high enough; no matter what configuration is used in traditional alkali metal thermoelectric devices, the cathode of BASE The side (low pressure side) is always gaseous sodium, so ...

AI Technical Summary

Problems solved by technology

However, the driving force for the transportation of alkali metal in BASE in traditional alkali metal thermoelectric conversion devices is a sufficiently large pressure difference on both sides, which requires that the operating temperature of the device is high enough; no matter what configuration is used in traditional alkali metal thermoelectric devices, the cathode of BASE The side (low pressure side) is always gaseous sodium, so porous electrodes must be used, which leads to the problem of large performance degradation of traditional alkali metal thermoelectric conversion devices, and the higher the operating temperature, the more severe the performance degradation

Therefore, some scholars have proposed the use of liquid electrodes, which are more common in the charging and discharging of batteries, but generally only put forward ideas on how to realize the conversion of thermal energy to electrical energy, and did not solve the problem of alloy reduction.

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