Pressure suppression and safe injection system

Abstract

The invention discloses a pressure suppression and safe injection system. The system includes a safety shell, and the safety shell is internally provided with: a pressure suppression pool, a reactor core water-replenishing tank, a safety injection tank, a pressure vessel catch pit, a primary loop pressure relief device, and a reactor pressure vessel; wherein, the pressure suppression pool is used for absorbing the heat released by the reactor system under the circumstances of accidents, and water in the pressure suppression pool is injected into the reactor core through gravity to realize low pressure injection function. The reactor core water-replenishing tank provides the water source for passive high-pressure safety injection. The safety injection tank provides the water source for passive medium-pressure safety injection. The pressure vessel catch pit is used for collecting condensed water condensed by a safety shell cooling system to provide the water source for recycling long-term cooling, realizes melt retention in the pressure vessel. The reactor safety system involved in the invention achieves reasonable design, simple system configuration, small safety shell size, and good economical efficiency, and satisfies the required technical effect of melt retention in the pressure vessel.

Description

technical field [0001] The invention relates to the safety field of nuclear power plants, in particular to a suppression and safety injection system. Background technique [0002] Reactor containment is a closed container to prevent radioactive substances from escaping when the nuclear reactor is in operation or in an accident. The spread of the substance contaminates the surrounding environment. At the same time, it is also often used as the enclosure structure of the reactor building to protect the reactor equipment system from the adverse effects of the outside world. It is a special container structure with a large body. [0003] In the prior art, in order to reduce the pressure of the containment, a containment sprinkler system is provided, in order to realize the emergency cooling of the core, a safety injection system is provided, and in order to meet the requirements for the retention of melt in the pressure vessel, a reactor cavity water injection system is provide...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a pressure suppression and safety injection system, which solves the technical problems of complex configuration of the existing safety system, large containment size, and poor economic efficiency, and realizes a reasonable design of the safety system, simple system configuration, and The size is smaller, the economy is better, and the technical effect of meeting the requirements for the retention of molten matter in the pressure vessel

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