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Core melt grouping trapping and cooling system

A core melt and cooling system technology, which is applied to cooling devices, reactors, nuclear power generation, etc., can solve the problem of group capture and cooling of core melt that has not been considered, and achieve simplification of post-accident treatment and radiation exposure. Dose Reduction Effects

Active Publication Date: 2016-05-04
CHINA NUCLEAR POWER ENG CO LTD
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AI Technical Summary

Problems solved by technology

[0004] None of the above patents related to the core catcher considers the use of separate containers to collect and cool the core melt in groups

Method used

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  • Core melt grouping trapping and cooling system
  • Core melt grouping trapping and cooling system
  • Core melt grouping trapping and cooling system

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1Shown is the core melt group capture and cooling system provided by the present invention, including the group capture system and the cooling system. The grouping collection system includes a melt distribution device 04, a plurality of melt transfer channels 05, a plurality of melt collection containers 06, a fixed structure of the melt collection container 07, and a collection container transfer device 08; the melt distribution device 04 is set At the bottom of the reactor cavity 02, a plurality of melt collection containers 06 are arranged below the melt distribution device 04, and are connected to the melt distribution device 04 through a plurality of melt transfer channels 05, and the plurality of melt collection containers 06 is fixed on the smelt collection container fixing structure 07, and...

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Abstract

The invention relates to a core melt grouping trapping and cooling system. The system comprises a grouping trapping system arranged at the bottom of a reactor cavity and a cooling system below the grouping trapping system. The grouping trapping system comprises a melt distribution device, a melt trapping container corresponding to the melt distribution device, and a trapping container transfer device which is arranged below the melt trapping container and is used for transferring the melt trapping container into the cooling system. The cooling system comprises a melt cooling water tank and a cooling circuit of the melt cooling water tank. The grouping trapping and cooling system improves a heat exchange area between of core melt and cooling water and improves melt decay heat output power. The core melt is subjected to grouping trapping and cooling so that treatment processes are greatly simplified after a reactor accident and the dose of the radiation on the personnel is substantially reduced. The core melt cooling method utilizing combination of air cooling and water cooling is reliable so that nuclear power plant long-term safety is improved after a severe accident.

Description

technical field [0001] The invention belongs to an out-of-reactor collection system for reactor core melt, in particular to a group collection and cooling system for reactor core melt. Background technique [0002] After the serious accidents at the Three Mile Island and Chernobyl nuclear power plants, the nuclear power industry began to focus on research and research on the prevention and mitigation of severe accidents. Due to engineering and other requirements. When a serious accident occurs in a pressurized water reactor nuclear power plant, the loss of core waste heat removal means will evaporate and exhaust the coolant, the core will be exposed and continue to heat up, the fuel elements will melt due to the loss of cooling, and the core melt will fall into the pressure vessel ( RPV) lower chamber, which in turn causes the failure of the lower head of the pressure vessel. If effective measures cannot be taken to cool it, the core melt may melt through the pressure vesse...

Claims

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Application Information

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IPC IPC(8): G21C9/016G21C15/18
CPCG21C9/016G21C15/18G21C15/182Y02E30/30
Inventor 韩旭邢继马卫民师鹏元一单王一光朱晨张丽郭强
Owner CHINA NUCLEAR POWER ENG CO LTD
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