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Melt containment retention system

A molten material and containment technology, applied in the field of molten material containment retention system, can solve the problems of being unable to effectively deal with the overall drop of the lower head and effectively resisting the impact of the molten material, so as to reduce the risk of radioactive leakage and high latent heat absorption Ability, the effect of increasing the collection rate

Active Publication Date: 2019-01-25
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the above two types have the following disadvantages: they cannot effectively resist the impact of the molten material, so they cannot effectively deal with the overall drop of the lower head

Method used

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  • Melt containment retention system
  • Melt containment retention system

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Embodiment 1

[0039] Such as figure 1 , 2 As shown, a melt containment retention system includes a retention part and a cooling system for cooling the retention part. The cooling system includes a connected cooling source device and a cooling water circuit. The cooling water circuit is connected to the retention part. The retention part includes a jacket The melt extension cavity is located outside the pressure vessel 2 and extends downward. The melt extension cavity is formed by surrounding the pressure vessel 2 with the first container 6 prepared by the cooling plate. The melt extension cavity flows along the flow direction of the melt 1 It has at least one first curved section buffer zone 3 for buffering the flow velocity of the molten material 1, at least one second curved section slow zone 4 for extending the flow channel and narrowing the flow channel, and a loading area at the bottom of the molten material extension chamber 5. The direction of curvature of both the buffer zone 3 of ...

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Abstract

The invention discloses a melt containment retention system. The system comprises a retention portion and a cooling system for cooling the retention portion, the cooling system comprises a cooling source device and a cooling water circuit which are connected, the cooling water circuit is connected to the retention portion, the retention portion comprises a melt extending chamber which sleeves outside a pressure vessel and extends downwardly, the melt extending chamber is formed by a first container prepared by a cooling plate surrounding the outer periphery of the pressure vessel, the melt extending chamber has at least one first curved section buffer zone for buffering the melt flow rate, at least one second curved section retarding zone for extending a flow passage and narrowing the flowpassage and one loading zone at the bottom of the melt extending chamber in the melt flow direction, and the first curved section buffering zone and the second curved section retarding zone are oriented in the opposite direction. The system can effectively buffer the impact of a high temperature melt.

Description

technical field [0001] The invention relates to the field of nuclear power accident mitigation, in particular to a containment containment system for molten matter. Background technique [0002] Since humans began to use nuclear energy, there have been many serious nuclear leakage accidents around the world, such as the Three Mile Island nuclear leakage accident in the United States, the Chernobyl nuclear leakage accident in the former Soviet Union, and the Fukushima nuclear leakage accident in Japan. By analyzing the development and treatment process of the above-mentioned nuclear leakage accidents, it can be found that keeping the radioactive core melt in the containment can ensure the integrity of the nuclear reactor safety barrier and greatly alleviate the further development and deterioration of severe nuclear reactor accidents. [0003] In order to keep the radioactive core melt in the containment more safely and reliably, a dual-barrier melt containment protection sys...

Claims

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Application Information

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IPC IPC(8): G21C9/016G21C15/18
CPCG21C9/016G21C15/18Y02E30/30
Inventor 张震李朋洲昝元锋卓文彬
Owner NUCLEAR POWER INSTITUTE OF CHINA
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