Suppressing water pool system for containment and nuclear island containment

Abstract

The invention discloses a suppressing water pool system for a containment. The system comprises a dry well (11) arranged in the upper region of the containment and wet wells (12) arranged in the lower region of the containment, wherein wet well water pools (120) filled with water are arranged in the lower parts of the wet wells (12), and wet well gas space (121) is formed in the upper parts of the wet well water pools (120), and a partition interface (13) in the middle position at the bottom of the dry well (11) sink to form a reactor pit (15); and a plurality of suppressing pipes (14), the inlet of each of which is located in the bottom position of the dry well (11) and the outlet of each of which is located in the bottom position of each of the wet well water pools (120), and the suppressing pipes (14) are located below the water surfaces of the wet well water pools (120). Correspondingly, the invention further discloses a nuclear island containment. According to the embodiment of the invention, pressure increasing of the containment can be quickly inhibited in the early stage of an accident, so that the design pressure of the containment housing is reduced and the suppressing water pool system plays a quite remarkable role of protecting the containment and the system in the containment after the accident.

Description

technical field [0001] The invention relates to the field of containment protection of nuclear power plants, in particular to a pressure-resistant water pool system for the containment and a nuclear island containment. Background technique [0002] In 5-2 million kilowatt (electric power) level nuclear power plants, when a large rupture occurs in the reactor coolant pipe, the fluid mass and energy released through the breach will generate a steam partial pressure in the net space of the containment vessel. The heat absorption of the originally cooler air in the containment causes the steam to condense and thereby reduce this partial pressure, but the heating of the air increases the partial pressure of the air. Therefore, in the early stage of an accident in such a reactor coolant pipeline, if the containment pressure rise cannot be quickly suppressed, the accident will expand and even affect the safety of the reactor; but in the existing technology, there is no rapid contai...

AI Technical Summary

Problems solved by technology

Therefore, in the early stage of an accident in such a reactor coolant pipeline, if the containment pressure rise cannot be quickly suppressed, the accident will expand and even affect the safety of the reactor; but in the existing technology, there is no rapid containment Effective and economical measure of elevated pressure

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