Loop type sodium-cooled fast reactor and working method thereof

Abstract

The invention discloses a loop type sodium-cooled fast reactor and a working method thereof. The loop type sodium-cooled fast reactor comprises a primary loop heat pipe section, a steam generator, a primary loop main pump, a waste heat removal heat exchanger, a pressure container and a waste heat removal chimney, wherein an outlet of the primary loop heat pipe section is divided into two paths, one path is communicated with an inlet of the primary loop main pump through a heat release side of the steam generator, the other path is communicated with the inlet of the primary loop main pump through the waste heat removal heat exchanger, an outlet of the primary loop main pump is communicated with an inlet of the pressure container, an outlet of the pressure container is communicated with an inlet of the loop heat pipe section, and the waste heat removal heat exchanger is located in the waste heat removal chimney. The sodium-cooled fast reactor and the working method thereof can guarantee the natural circulation capacity and the removal capacity of reactor core waste heat.

Description

technical field [0001] The invention belongs to the field of sodium-cooled fast reactors, and relates to a loop-type sodium-cooled fast reactor and a working method thereof. Background technique [0002] At present, the sodium-cooled fast reactor widely adopts the pool reactor and the sodium-sodium-water three-loop structure, that is, an intermediate loop and an intermediate heat exchanger for heat exchange are set between the reactor loop and the steam turbine loop, and the reactor waste heat is discharged using an independent heat exchanger. The heat exchanger is realized, and the independent heat exchanger is a closed circuit connected in parallel with the secondary circuit. [0003] Many important equipment such as the sodium pump and independent heat exchanger of the pool-type sodium-cooled fast reactor are installed in the primary circuit pressure vessel, resulting in a large volume of the pressure vessel and inconvenient maintenance of the equipment; the pool-type sod...

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Problems solved by technology

[0003] Many important equipment such as the sodium pump and independent heat exchanger of the pool-type sodium-cooled fast reactor are installed in the primary circuit pressure vessel, resulting in a large volume of the pressure vessel and inconvenient maintenance of the equipment; the pool-type sodium-cooled fast reactor has a primary circuit of sodium and a secondary circuit There are two sodium circuits for sodium, and the large amount of sodium metal leads to a large number of sodium-related equipment, which greatly increases the workload of equipment maintenance and waste liquid post-treatment, increases equipment costs and maintenance costs, and also increases the comprehensiveness of safety-level system equipment. failure probability

The waste heat removal system of the pool-type sodium-cooled fast reactor discharges the waste heat from the core to the atmosphere through double heat exchange. The temperature difference between the circulating cold and heat sources is small, and the ability of natural circulation is weak, which also reduces the ability to discharge the waste heat from the core.

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