Self-sealing shielding system for nuclear power ship containment pressure control

Abstract

The invention discloses a self-sealing shielding system for nuclear power ship containment pressure control, which comprises a self-sealing shielding structure, a containment and a suppression pool, and is characterized in that the self-sealing shielding structure is a U-shaped pipeline structure, the two ends of the self-sealing shielding structure are open, and the self-sealing shielding structure is filled with water; an opening in one end of the self-sealing shielding structure is positioned in the containment and is communicated with the interior of the containment; the other end of the self-sealing shielding structure is communicated with the suppression pool through a communication pipeline, the suppression pool is filled with water, and a port of the communication pipeline is inserted into the water of the suppression pool. The self-sealing shielding system has the beneficial effects that the self-sealing shielding structure can be automatically opened after an accident, external manpower and electric power are not needed, the peak pressure of the containment is reduced, long-term heat removal is realized, the containment structure is ensured not to exceed a safety limit value, radioactive substance leakage is avoided, the reliability is high, and the response speed is high.

Description

technical field [0001] The invention relates to the pressure control technology of surface nuclear power ships, in particular to a self-sealing shielding system used for pressure control of nuclear power ship containment. Background technique [0002] When the high-energy pipeline in the containment of the nuclear power system of the surface ship ruptures, the high-pressure, high-temperature, high-radioactive coolant or high-temperature steam injected from the breach will be quickly released into the containment. The air in the air expands due to heat, and the combined action of the two will cause the pressure in the containment to rise rapidly within seconds. If the pressure of the containment vessel exceeds its design limit, it will cause the containment vessel to rupture and leak, resulting in the leakage of radioactive materials, endangering the health of people on board and around, and causing radioactive pollution to the surrounding environment. Therefore, after a bre...

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Problems solved by technology

[0006] (3) Set up blasting equipment. After the accident, after the containment pressure rises, the blasting equipment between the containment and the suppression pool will be automatically put into operation, and the containment suppression system will be activated to reduce the containment pressure. For example, the KLT40S nuclear power plant of the Russian floating nuclear power plant device; the blasting device of this technical solution needs to be designed in an integrated manner with local shielding, the equipment is heavy and the technical requirements are high

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