Subcritical energy cladding accident mitigation system

Abstract

The invention discloses a subcritical energy cladding accident mitigation system. The subcritical energy cladding accident mitigation system comprises a passive water injection system and at least one group of passive cooling systems, wherein the passive water injection system is arranged in a containment shell and is used for injecting water into a subcritical energy cladding arranged in the containment shell, so that heat of the subcritical energy cladding is conducted into the containment shell; the passive cooling system penetrates through the containment shell in a sealing manner, so as to conduct the heat in the containment shell out of the containment shell; the passive water injection system can automatically conduct the heat of the subcritical energy cladding into the containment shell, cooling mediums are circulated in the passive cooling system, so as to conduct the heat in the containment shell into atmospheric environment; heat can be conducted passively from a hybrid reactor core to the containment shell and from the inside of the containment shell to the outside of the containment shell under an accident, all waste heat of the subcritical energy cladding during running can be completely covered and exhausted, serious accidents such as hybrid reactor core melting, high-pressure molten reactor, and hydrogen gas explosion can be effectively prevented, and the integrity of the subcritical energy cladding is ensured.

Description

technical field [0001] The invention relates to the field of nuclear power plant reactor safety equipment, in particular to a mitigation system suitable for serious accidents in subcritical energy envelopes. Background technique [0002] The use of nuclear power is a major breakthrough in the history of human energy utilization. The use of nuclear fission reactions 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. The characteristics of low input and high output make mankind pay more and more attention to the utilization of nuclear energy, and continuously increase the 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 extremely high utilization value, it may also bring great harm. In the process of utilizing nuclear ...

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Problems solved by technology

For the second aspect, the most important thing is to export the heat generated by the decay of the remaining fission products or fission products in the reactor core, but most of these heat exports need to be realized by external active equipment, so once a power outage occurs and other accidents will lead to serious consequences; and most of the heat export equipment can only export the heat of the steam generator, and cannot realize the heat export of other components or positions in the core

In addition, the above-mentioned heat export methods are all designed for non-hybrid energy systems, which cannot meet the waste heat discharge requirements of the entire stack when an accident occurs in the subcritical energy envelope, especially the passive waste heat discharge requirements of the subcritical energy envelope.

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