Passive combined heat removal system with integrated heat release trap

Abstract

The invention provides a passive combined heat removal system with an integrated heat release trap, which is characterized in that the integrated heat release trap is arranged at the middle lower partof a double-layer coagulation containment sandwich gas space, and is an annular water tank defined by a corrosion-resistant metal plate; at least one group of pipelines and one-way valves for communicating the integrated heat release trap with the internal gas space of the containment vessel are arranged on the top wall surface of the integrated heat release trap; and the integrated heat releasetrap is connected with a containment vessel quick pressure relief system, an automatic pressure relief system, a passive residual heat removal system, a passive low-pressure safety injection system, apassive reactor cavity water injection system and a filtering and discharging system. The arrangement of a reactor system of a nuclear power plant is simplified, the size of the containment is reduced, and a feasible scheme is provided for improving the economy and passive safety of an advanced nuclear power plant.

Description

technical field [0001] The invention relates to a passive safety system in an advanced nuclear power plant, in particular to a passive combined heat removal system with an integrated heat release sink. Background technique [0002] Since the large-scale commercial use of nuclear energy in the 1960s and 1970s, it has provided mankind with clean and efficient energy for a long time. Due to the potential radioactive risks in the operation of nuclear power plants, their safety has always been highly concerned by people in the industry, especially R&D personnel. [0003] So far, there have been three relatively serious accidents in the field of nuclear energy: the first is the Three Mile Island nuclear accident in the United States, the second is the Chernobyl nuclear accident in the Soviet Union, and the third is the Fukushima nuclear accident in Japan. The profound lessons learned from the three nuclear accidents are that human error is likely to lead to serious accidents in t...

AI Technical Summary

Problems solved by technology

With regard to the solution for pressure relief in the gas space of the containment, the published patents are mainly aimed at the second peak pressure, and there is no effective solution for relieving the first peak pressure of the containment, mainly by increasing the volume of the containment as much as possible to enhance safety. The buffer capacity of the shell gas space, which increases the volume and construction cost of the nuclear power plant containment

[0007] It can be seen that the further development of existing passive safety systems is mainly limited by the following two points: one is how to effectively deal with large breach accidents with a smaller containment volume The first pressure peak; the second is how to effectively integrate heat sinks of different passive systems to simplify system layout and reduce equipment redundancy

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