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Water logging and air cooling combined passive containment cooling system and method

A passive containment and cooling system technology, applied in the field of containment cooling systems, can solve problems such as potential safety hazards and system inability to perform functions, and achieve the effects of speeding up switching, facilitating heat transfer, and small water storage cross-sections

Inactive Publication Date: 2013-09-11
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the existing containment cooling system design schemes, no matter the active or passive schemes, they can only be put into operation after receiving external start signals and instructions, and opening relevant valves or pumps.
Once the starting signal fails, or the valves and pumps do not operate, the system will not be able to perform its function
In addition, in the case of false signals, or misoperation of valves and pumps, it will also bring other safety hazards

Method used

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  • Water logging and air cooling combined passive containment cooling system and method
  • Water logging and air cooling combined passive containment cooling system and method
  • Water logging and air cooling combined passive containment cooling system and method

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Embodiment Construction

[0025] Such as image 3 As shown, in an embodiment of the present invention, the passive containment cooling system includes a steel containment container 22 , a cooling water pool 23 and an air shroud 25 . The steel containment vessel (ie containment vessel) 22 is completely submerged in an external cooling water pool 23 in normal standby condition, and the water pool 23 is a decay heat sink for the containment vessel in case of an accident. An air guide 25 is arranged inside the pool 23 and outside the steel containment container 22, the air guide 25 has a surrounding portion 251 surrounding the containment 22 and a guide portion 252 with an air outlet 29 above the top of the containment 22, The surrounding part 251 and the guide part 252 are connected as a whole, and the cooling water pool 23 has an air inlet 26. From the air inlet 26 of the cooling water pool, to the bottom of the surrounding part 251 of the air guide cover 25, and then to the guide part 252, a chimney is ...

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Abstract

The invention provides a water logging and air cooling combined passive containment cooling system and method. The system is completely self-started, free of intermediate control procedure and high in reliability. The is characterized by comprising a cooling pool and an air flow guide cover, wherein the cooling pool can submerge a containment, the air flow guide cover is arranged at the outside of the containment in the cooling pool, the air flow guide cover is provided with a surrounding part surrounding the containment, and a flow guide part located above the top part of the containment and extending to the atmosphere, the surrounding part and the flow guide part are connected into an entirety, the cooling pool is provided with an air inlet, and the air inlet of the cooling pool, the surrounding part of the air flow guide cover and the flow guide part form an air flow passage with a chimney effect.

Description

technical field [0001] The invention relates to nuclear reactor safety facilities and methods, in particular to a containment cooling system and method. Background technique [0002] The containment vessel is the last physical barrier for a nuclear reactor to prevent the release of radioactive products to the environment, and is the final containment entity for reactor radioactivity and decay heat in case of an accident. Therefore, maintaining the integrity of the containment vessel is of paramount importance. The containment cooling system is put into use in case of an accident to discharge the heat in the containment, keep the temperature and internal gas pressure of the containment below the design limit, ensure that the containment is not damaged, and thus maintain the integrity of the radioactive containment boundary. [0003] In existing reactors, the containment cooling system can be divided into two types: active and passive. [0004] Most of the second-generation n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/12
CPCY02E30/30
Inventor 林千廖亮申屠军司胜义
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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