Liquid metal cooling tank type separation system for in-pile cold tank and in-pile hot tank of reactor

Abstract

The invention provides a liquid metal cooling tank type separation system for an in-pile cold tank and an in-pile hot tank of a reactor. The separation system comprises a gas storage tank (1), a heater (2), a fan (3), an air inlet valve (4), an in-pile hot partition plate (5), an air outlet valve (6) and a connecting pipeline (7). When the reactor is in operation, the system takes the effect of separating the in-pile hot tank from the in-pile cold tank. At the moment, the air inlet valve (4) and the air outlet valve (6) are in the switching off state and the in-pile partition plate (5) is filled with gas. When the reactor is shut down, the system takes the effect of auxiliary heating of in-pile refrigerant. At the moment, the air inlet valve (4) and the air outlet valve (6) are switched on, the heater (2) and the fan (3) are in operation and gas is introduced into the in-pile hot partition plate (5) from an air inlet and is discharged out of the in-pile hot partition plate (5) from an air outlet. Two functions of separation of the in-pile cold tank from the in-pile hot tank and auxiliary heating of in-pile refrigerant are realized by the same equipment, and thus the complexity of reactor systems is lowered and the economy and the safety of reactors are improved.

Description

technical field [0001] The invention belongs to the technical field of reactor system component design, and in particular relates to a cold and hot pool separation system in a liquid metal cooling pool type reactor. Background technique [0002] The liquid metal cooling pool reactor has a simple structure, and all the coolant is in one container, which can avoid loss of primary coolant (LOCA) accidents and can effectively improve the safety of the reactor. It is an important candidate for advanced reactors. Among the six fourth-generation nuclear energy systems released by the International Atomic Energy Agency (IAEA), sodium-cooled fast reactors and lead-cooled fast reactors are both liquid metal-cooled pool reactors. In accelerator-driven subcritical reactor designs, pool reactors are also cooled with liquid metal. [0003] In-core thermal separation system is an important part of liquid metal pool reactor. The reactor vessel of the liquid metal pool reactor is divided i...

AI Technical Summary

Problems solved by technology

In the design of the lead-bismuth cooled reactor MYRRHA in Belgium, a gas heating system is installed in the reactor for auxiliary heating of the coolant in the reactor. This solution needs to increase the reactor internal components and increase the complexity of the system.

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