Sunken containment with separated air cooling hot trap
An air cooling and containment technology, applied in the field of containment, can solve the problem of insufficient final heat sink capacity and achieve the effect of increasing cooling capacity
Active Publication Date: 2013-10-30
上海核工程研究设计院股份有限公司
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Problems solved by technology
However, its own final heat sink capacity is insufficient, and the intervention of active devices is still required 72 hours after the nuclear power plant accident to alleviate the accident.
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[0015] A sunken containment vessel with a separate air cooling heat trap according to the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0016] Such as figure 1 As shown in the present invention, a sunken containment vessel with a separate air-cooled heat trap, wherein the containment vessel 1 is located underground, and the containment vessel 1 includes a pressure vessel 2 and a primary circuit pressure boundary 3, etc. The containment vessel 1 in the present invention can be either a prestressed concrete containment vessel or a steel containment vessel.
[0017] A plurality of evaporation end heat pipes 4 are welded and fixed around the vertical section of the containment vessel 1 and the outer wall of the dome, and these evaporation end heat pipes 4 are divided into several groups. The outlet of each group of evaporating end heat pipes is connected to the inlet of one rising connecting pipe 10, an...
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The invention relates to a sunken containment with a separated air cooling hot trap. The containment is positioned underground, a plurality of evaporating end heat pipes are arranged around a vertical section of the containment and the outer wall of a dome, and are divided into a plurality of groups, outlets of each group of evaporating end heat pipes are communicated with an inlet of one ascending connecting pipe, an outlet of the ascending connecting pipe is communicated with inlets in the tops of one group of condensing end heat pipes comprising a plurality of condensing end heat pipes, outlets in the bottoms of the group of condensing end heat pipes are communicated with an inlet of a descending connecting pipe, and an outlet of the descending connecting pipe is communicated with inlets in the bottoms of one group of evaporating end heat pipes. The invention provides a separated hot trap device for the containment to ensure that the containment has the function of a final hot trap; for a prestressed concrete containment, an original containment without the final hot trap can have a certain capacity of the final hot trap; and for a steel containment with the capacity of the final hot trap, the cooling capacity can be increased through the separated hot trap.
Description
technical field [0001] The invention relates to the technical field of reactor safety in nuclear power plants, in particular to a containment vessel with final heat sinks after an accident. Background technique [0002] For nuclear power plants, prestressed concrete containment is currently widely used, such as the Qinshan Phase I nuclear power plant belonging to the second-generation nuclear power plant and the French EPR nuclear power plant belonging to the third-generation nuclear power plant. The prestressed concrete containment itself does not have the function of the final heat sink, but can only function as a safety barrier, and can only rely on the spray in the containment to play the role of the final heat sink. [0003] There are also steel containment vessels, such as AP1000 belonging to the third-generation nuclear power plant; for steel containment vessels, it can not only serve as a safety barrier, but also can be cooled by water film cooling of external coolin...
Claims
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Login to View More IPC IPC(8): G21C15/18G21C13/02
CPCY02E30/40Y02E30/30
Inventor 郑明光叶成顾国兴陈煜刘鑫丁振坤桂璐廷袁芳刘春丽程会方
Owner 上海核工程研究设计院股份有限公司