Containment pressure suppression and cooling system having inherent safety

A cooling system and inherently safe technology, applied in the field of containment depressurization cooling system, can solve the problems of loss of scale economy, complex system design, system failure, etc., and achieve the effect of ensuring integrity, simple and reliable system, and simple system

Inactive Publication Date: 2017-06-27
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

[0002] The containment depressurization cooling system is a special safety facility to deal with nuclear reactor design basis accidents and severe accidents. Most of the existing nuclear power reactor containment depressurization cooling systems adopt active and passive methods. The system design is relatively

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  • Containment pressure suppression and cooling system having inherent safety

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] Such as figure 1 As shown, it is suitable for an integrated modular reactor with a thermal power of 200-1000 MW. The inherently safe containment depressurization cooling system of the present invention includes a steel containment 1, a dry well 2, a wet well 3, a connecting pipe 4, Shielded pool 5, the water capacity of shielded pool 5 is about 3000m 3 , no operator intervention is required 7 days after the design basis accident. The long-term cooling of the containment can be realized after the shielding pool 5 is supplemented with water.

[0013] The reactor pressure vessel 9 is located in the steel containment vessel 1 and the reactor 6 is located in the reactor pressure vessel 9 . The lower part of the reactor pressure vessel 9 (including the lower head and the core section barrel) is arranged in the circular reactor cavity 8 at...

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Abstract

The invention belongs to the technical field of containment pressure suppression and cooling systems, and particularly relates to a containment pressure suppression and cooling system having inherent safety. The containment pressure suppression and cooling system can perform pressure suppression and cooling on a containment after a loss of coolant accident and a steam pipe rupture accident happen to a reactor. A reactor pressure vessel is positioned in a steel containment, a reactor is positioned in the reactor pressure vessel, the lower part of the reactor pressure vessel is arranged in a round reactor cavity at the lowest elevation position in the steel containment, and the upper part of the steel containment is immersed in a shielding pond; the upper space in the steel containment is a dry well, the lower space of the steel containment is a wet well, the dry well and the wet well are separated by a reinforced concrete wall and a floor slab to form respectively independent spaces, and a communicating pipe is the only connection channel for the dry well and the wet well; and the lower part of the wet well is a pressure suppression pond, and the upper part of the wet well is a gas space. The containment pressure suppression and cooling system provided by the invention can perform pressure suppression and cooling on the containment after a loss of coolant accident and a steam pipe rupture accident happen to the reactor.

Description

technical field [0001] The invention belongs to the technical field of containment depressurization cooling system, and in particular relates to an inherently safe containment depressurization cooling system, which can decompress and cool the containment after a dehydration accident and a steam pipe rupture accident occur in a reactor. Background technique [0002] The containment depressurization cooling system is a special safety facility to deal with nuclear reactor design basis accidents and severe accidents. Most of the existing nuclear power reactor containment depressurization cooling systems adopt active and passive methods. The system design is relatively complicated and the cost is high. There is also a risk of system failure. For modular reactors using small steel containment vessels, due to the small power, economies of scale are lost. How to design a simple and reliable containment depressurization cooling system is a common problem in the global nuclear energy ...

Claims

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Application Information

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IPC IPC(8): G21C9/004G21C15/18
CPCG21C9/004G21C15/18Y02E30/30
Inventor 秦忠宋丹戎李庆许斌李松
Owner NUCLEAR POWER INSTITUTE OF CHINA
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