Containment suppression system of offshore nuclear power plant

Abstract

The invention discloses a containment pressure suppression system for a marine nuclear power station. The containment pressure suppression system comprises a pressure suppression pool arranged in a containment, wherein the pressure suppression pool comprises a water space and an air space; the water space is arranged at the bottom of the containment and surrounds a reactor core; the water space communicates with a containment dry well; the air space is arranged above the water space and surrounds main equipment; an air space cavity directly communicates with the water space. When the nuclear power station generates LOCA (Loss Of Coolant Accidents), a mixture of air, steam and water in the containment dry well is introduced into the water space and is fast condensed by cooling water in the water space, so that the pressure rise effect of the containment can be relieved; the containment pressure suppression system is favorable for the realization of the radiation shielding function; the layout is compact; the space utilization rate is high; the miniaturization design of the containment of the marine nuclear power station is also facilitated.

Description

technical field [0001] The invention relates to a passive cooling system for a containment shell of a nuclear power plant, in particular to a passive suppression system for a containment shell suitable for an offshore nuclear power plant. Background technique [0002] Offshore nuclear power plants are the trend of nuclear power technology development in the future. The small nuclear reactors used in offshore nuclear power plants have the characteristics of long refueling and maintenance periods, long-term operation, and continuous supply of comprehensive energy such as electric energy, heat energy, and seawater desalination. At present, major nuclear power companies The research and development and promotion of offshore small nuclear reactors have been accelerated. [0003] Small offshore nuclear reactors need to be miniaturized based on existing large nuclear power plants. However, in existing large nuclear power plants, in order to prevent the leakage of radioactive substa...

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Problems solved by technology

However, the above-mentioned first method has the disadvantage of complex equipment and takes up a large space; in the above-mentioned second method, the current design of the suppression pool is generally not reasonable enough, resulting in the equipment layout in the containment is not compact enough, and the space utilization rate is low

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