Steam pressure tablet, thin-film and metal mesh type nuclear plant severe accident relieving apparatus

Abstract

The invention discloses a steam flake, film and metal net type nuclear power station severe accident mitigating device, and belongs to the technical field of nuclear power station safety equipment. The nuclear power station severe accident mitigating device is a mitigating device utilizing comprehensive characteristics of a stream flake, a film and a metal net to achieve strengthened guarantee ofthe safety shell of a nuclear power station; a wave plate of the mitigating device is positioned between the inner wall of the safety shell and the steam flake; the surface of the steam flake is covered by the film; the metal net is fixed on the surface of the film; a protective layer with the integral function of energy absorption, moisture absorption, substance absorption and shock absorption is formed on the inner wall of the safety shell; and when a severe accident happens, the safety guarantee function is executed and completed. The mitigating device has the advantages of good reserved safety, convenient implementation, simple control, and safety and reliability.

Description

technical field [0001] The invention belongs to the field of nuclear power plant safety equipment and technology, and in particular relates to a severe accident relief device for a steam-compressed, thin film and metal mesh nuclear power plant. Specifically, in the event of a serious accident exceeding the design criteria in a nuclear power plant, the steam tableting characteristics with energy absorption, moisture absorption, mass absorption and shock absorption effects; the shock absorption and energy transfer effects of the film; the blocking function of the mesh material, To suppress or slow down serious accidents of reactors, so that serious accidents can be alleviated and accident hazards can be reduced. Background technique [0002] The containment vessel is the last barrier of the nuclear reactor and has backup safety. The Three Mile Island accident in the United States verified the extreme importance of containment for nuclear power plants. In order to ensure that...

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Problems solved by technology

Although the above methods solve some problems to a certain extent, in fact, other systems are added, which not only increases economic investment, but also brings the risk of increased reliability from the perspective of probability

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