Nuclear power plant passive final hot trap cooling system and method

A final heat sink and cooling system technology, applied in nuclear power generation, cooling devices, nuclear engineering, etc., can solve the problems of high manufacturing difficulty, high energy consumption, large amount of steel, etc., achieves good cooling effect, saves construction investment, and simplifies The effect of the construction process

Active Publication Date: 2014-07-02
CHINA GENERAL NUCLEAR POWER OPERATION +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the construction of second-generation nuclear power plants, this cooling method consumes a lot of energy, and the construction of water tanks and steel containment vessels consumes a huge amount of steel, making it difficult to manufacture.

Method used

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  • Nuclear power plant passive final hot trap cooling system and method
  • Nuclear power plant passive final hot trap cooling system and method
  • Nuclear power plant passive final hot trap cooling system and method

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Embodiment Construction

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] Such as Figure 1-3 As shown, the passive final heat sink cooling system of a nuclear power plant according to an embodiment of the present invention includes a refueling water tank 1, a containment vessel 2, a cooling water heat exchange device 3 sequentially connected between the refueling water tank 1 and the containment vessel 2, and The passive cooling device 4; the refueling water tank 1 is used to hold cooling water and provide cooling water for the system to cool the containment vessel 2; the cooling water heat exchange device 3 is used for heat exchange with the cooling water; the cooling water is heat exchanged After becoming hot, it can be cooled by the passive cooling device 4, and then enter the cont...

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Abstract

The invention discloses a nuclear power plant passive final hot trap cooling system and method. The nuclear power plant passive final hot trap cooling system comprises a material changing water box for providing cooling water, a safe shell, and a cooling water heat exchanging device and a passive cooling device which are successively connected with the material changing water box and the safe shell. The nuclear power plant passive final hot trap cooling system and method provided by the invention have the characteristics that the construction process is simplified, the construction investment is saved, the stability is high, the cooling effect is good and the like, and the system has the characteristic of being completely passive in an initial stage of operation when working in a second generation nuclear power station, does not need extra power, and not only can be cooled under the blackout condition of the whole station, but also can serve as a relieving method of a cold source losing accident.

Description

technical field [0001] The invention relates to a nuclear power plant final heat sink cooling system, in particular to a nuclear power plant passive final heat sink system and method. Background technique [0002] One of the characteristics of nuclear reactors is that the core still needs to be cooled after shutdown, because nuclear fuel has self-decaying waste heat, although it is much smaller than the heat generated by human-controlled fission, but if it is not cooled for a long time, it will also make the core The temperature reaching thousands of degrees causes the nuclear fuel rods to melt, and then burns through the outer protective steel shell, concrete structure, etc., causing a nuclear leak. In the case of a reactor shutdown, the power required for the pumps of the waste heat cooling system needs to be imported from the outside. In general, multiple external power grid inputs will be prepared, and each unit generally has two emergency diesel generators for power su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18
CPCY02E30/40Y02E30/30
Inventor 吴震华黄卫刚黄远征
Owner CHINA GENERAL NUCLEAR POWER OPERATION
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