Time-limit-free passive combined heat removal system with integrated heat release trap

Abstract

The invention provides a non-time-limit 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 part of a double-layer coagulated containment sandwich gas space and is an annular water tank defined by a corrosion-resistant metal plate; at least one group of communicating pipelines andone-way valves leading to the internal air space of the containment are arranged on an inner-layer containment wall surface of the upper air space of a containment interlayer; the integrated heat release trap is connected with a containment vessel rapid pressure relief system, an automatic pressure relief system, a passive residual heat removal system, a passive low-pressure safety injection system, a passive reactor cavity water injection system and a filtering and discharging system, and the integrated heat release trap is used for simplifying the arrangement of a reactor system of a nuclear power plant, reducing the volume of a containment vessel and providing unlimited heat export for the containment vessel. A feasible scheme is provided for improving the economy and the passive safety of the 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 timeless passive combined heat removal system with an integrated heat 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 ...

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 three points: first, how to effectively deal with the first pressure peak of a large breach accident with a small containment volume; second, how to effectively integrate different The heat release sink of the passive system to simplify the system layout and reduce equipment redundancy; the third is how to complete the unlimited time-limited heat export of the containment

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