Passive containment cooling system

Abstract

The invention discloses passive containment cooling system. The passive containment cooling system comprises a high-position material exchanging water pool used for storing cooling water, an evaporator, an air cooling tower, a plurality of pipes, and a refrigerant, wherein a containment is equipped with a vault; a reactor pressure vessel o is located in the vault; the high-position material exchanging water pool is positioned in the containment and above the vault, and is communicated with the vault through an isolating valve; the evaporator is positioned in the vault; the air cooling tower is positioned outside the containment and is higher than the vault, the pipes are connected between the outlet of the evaporator and the inlet in the upper end of the air cooling tower, and between the outlet in the lower end of the air cooling tower and the inlet of the evaporator; the refrigerant flows in a circulation channel formed among the evaporator, the air cooling tower and the pipes. The passive containment cooling system can realize the function of exporting waste heat of the containment in case of an accident without relying on an external power supply, so as to increase the stability of the system and also the safety of the nuclear power station.

Description

technical field [0001] The invention relates to a nuclear reactor safety device, in particular to a passive containment cooling system. Background technique [0002] The use of nuclear power is a major breakthrough in the history of human energy utilization. Using the fission reaction of atomic nuclei, nuclear power plants can produce high energy output unmatched by all other traditional fossil energy sources, and these high energy outputs often only need to consume a small amount of nuclear fuel. . This low-input and high-output feature has made mankind pay more and more attention to the use of nuclear energy, and has continuously increased research and development in the field of nuclear energy. Today, nuclear energy has become an important energy component in many countries in the world. However, while nuclear power has a very high utilization value, the possible harm it may bring makes people turn pale when talking about nuclear power. In the process of using nuclear p...

AI Technical Summary

Problems solved by technology

However, on the one hand, the existing cooling method uses an external AC power supply to actively inject water, which cannot cope with power outages when a safety accident occurs; on the other hand, it can only cool for a short time, and still cannot export the heat in the containment Outside the shell, after the accident lasts for a long time, the temperature and pressure of the containment shell still rise, and the safety is not high

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