A passive containment auxiliary cooling system and method

A passive containment and auxiliary cooling system technology, applied in the field of nuclear power, can solve the problems such as the inability to uniformly, quickly and effectively realize the containment cooling, and the poor heat exchange of the containment, so as to promote natural circulation, increase the density difference, and enhance the cooling capacity. Effect
CN110942835BActive Publication Date: 2021-12-07CHINA NUCLEAR POWER ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NUCLEAR POWER ENG CO LTD
Publication Date
2021-12-07

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Abstract

The invention provides a passive containment auxiliary cooling system and method. The containment includes an inner containment and an outer containment. The cooling system includes: a nozzle, a spray pipeline, a distribution device and a water supply device; the spray One end of the pipeline extends below the top outlet of the outer containment vessel, and the other end is connected to the water supply device; the number of the nozzles is multiple, and they are arranged at intervals on the spray pipeline below the top outlet of the outer containment vessel, and the nozzles Oriented so that the cooling water sprayed by the nozzles falls on the center of the inner containment dome; the distribution device is arranged on the top of the inner containment for evenly distributing the cooling water sprayed by the nozzles to the top of the inner containment surface to form a cooling water film. The method and system of the invention can effectively solve the defect that the containment only depends on passive air cooling, enhance the cooling capacity of the cooling system, and thus improve the safety performance of the nuclear power plant.
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Description

technical field

[0001] The invention belongs to the technical field of nuclear power, and in particular relates to a passive containment auxiliary cooling system and a passive containment auxiliary cooling method. Background technique

[0002] The containment is an important safety barrier to prevent the leakage of radioactive materials in the event of an accident in a nuclear power plant. In the event of serious accidents such as water loss accidents or pipeline rupture accidents, the containment will be rapidly filled with a large amount of steam, causing the temperature and pressure in the containment to rise sharply. Once the temperature and pressure exceed the design allowable range, the containment may be damaged, causing radioactive Material leakage. Therefore, in order to ensure the safety of nuclear power plants, it is necessary to set up a special system for the cooling of the containment.

[0003] At present, the small reactors of nuclear power plants have been ...

Claims

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