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A final heat sink system for active and passive cooperative cooling of nuclear power plants

A technology of final heat sink and cooling system, applied in nuclear power generation, cooling devices, nuclear engineering, etc., can solve the problems of low heat exchange efficiency of open heat exchangers, low efficiency of passive heat exchangers, and large evaporation, etc. Achieve the effect of improving safety, maintaining integrity, and improving heat transfer capacity

Active Publication Date: 2022-02-18
CHINA NUCLEAR POWER ENG CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a final heat sink system for active and passive cooperative cooling of nuclear power plants, which solves the problem of low efficiency of passive heat exchangers and open heat exchangers that only spray on the top of the containment but cannot spray locally. Technical problems such as low efficiency, relying on a safe power source to start the passive system, and high water temperature leading to large evaporation in the early stage of the accident

Method used

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  • A final heat sink system for active and passive cooperative cooling of nuclear power plants
  • A final heat sink system for active and passive cooperative cooling of nuclear power plants
  • A final heat sink system for active and passive cooperative cooling of nuclear power plants

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the following embodiments are only a part of the embodiments of the present invention, but not all of them. Based on the embodiments described in the present invention, all other embodiments obtained by those skilled in the art without creative efforts are within the protection scope of the present invention.

[0049] Such as figure 1 As shown, a final heat sink system for active and passive cooperative cooling of nuclear power plants provided by the present invention includes an active secondary circuit filling and discharging system 1, an active containment cooling system 2, an active shielded cooling water system 3, and a passive Secondary loop natural circulation system 4 and pa...

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Abstract

The invention belongs to the field of nuclear power plant system design, and specifically relates to a final heat sink system for active and passive cooperative cooling of nuclear power plants. Secondary loop natural circulation system, passive containment heat pipe cooling system, upper heat pipe cooling system and lower heat pipe cooling system. The invention solves the problem of low efficiency of the passive heat exchanger, which can only be sprayed on the top of the containment but not partially sprayed, the heat exchange efficiency of the open heat exchanger is low, the passive system can only be started by relying on a safe power supply, and the high water temperature causes the evaporation in the early stage of the accident major technical issues.

Description

technical field [0001] The invention belongs to the field of nuclear power plant system design, and in particular relates to a final heat sink system for active and passive cooperative cooling of a nuclear power plant. Background technique [0002] Since the Fukushima nuclear accident, the safety of nuclear power plants and the diversity of response measures have been widely valued. In recent years, a new batch of nuclear power construction in the world has focused on adopting safer and more advanced third-generation nuclear power units. Nuclear power plants designed in the United States adopt a full passive safety system to deal with design basis accidents and beyond design basis accidents, and the final heat sink conducts heat to the air through the containment air cooling system, while France adopts a multi-column active safety system to deal with accidents, and its final heat sink The heat sink conducts heat to seawater through the circulation of the active system. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/12G21C15/14G21C15/18
CPCG21C15/12G21C15/14G21C15/18G21C15/182Y02E30/30G21C9/004
Inventor 邢继于沛刘亚光李丽娟王广飞王佳明姚鸿帅赵斌丁亮马惠昀侯婷
Owner CHINA NUCLEAR POWER ENG CO LTD
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