Nuclear power plant post-accident containment heat leading-out system
A heat export and containment technology, applied in the field of nuclear power plants, can solve the problems of poor reliability, low heat export power, and complex structure of the heat export system.
Active Publication Date: 2020-12-08
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology
However, the heat extraction systems involved in these technologies have more or less problems such as complex structure, high energy consumption, poor reliability, and low heat extraction power.
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[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0025] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by various orientational terms are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.
[0026] Such as figure 1 As shown, the containment vessel includes an inner shell, an outer shell and a base. The inner containment shell encloses a shell space 10 . T...
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The invention provides a nuclear power plant post-accident containment heat leading-out system. A containment comprises an inner shell, an outer shell and a base, ventilation channels are formed between the containment inner shell and the containment outer shell and between the containment outer shell and the containment base. The heat leading-out system comprises: a plurality of humidification pools, wherein the humidification pools are arranged on the containment base at the bottom of the ventilation channel, the top of each humidification pool is open, and water is contained inside each humidification pool; and a plurality of groups of immersed ultrasonic oscillators, wherein each group of immersed ultrasonic oscillators corresponds to one humidification pool, is arranged in the corresponding humidification pool and is used for atomizing water in the corresponding humidification pool. According to the heat leading-out system disclosed by the invention, the containment obtains higherheat leading-out power through feeding and direct evaporation of micro-droplets generated by the immersed ultrasonic oscillators in the natural ventilation channel.
Description
technical field [0001] The invention relates to the technical field of nuclear power plants, in particular to a containment heat export system after a nuclear power plant accident. Background technique [0002] The airtight containment is an important barrier to prevent the leakage of radioactive materials in the event of an accident in a nuclear power plant. Normally, after an accident, the containment vessel will be isolated and become a closed space, and the sharply increased temperature and pressure are all borne by the containment vessel structure. This design requires the containment vessel to have a large free volume and shell thickness, and also requires the matching post-accident containment depressurization and heat removal system to have high performance. [0003] After the accident, the core problem of the airtight containment of a nuclear power plant is the export of reactor waste heat. If the waste heat export mechanism is lost, the temperature and pressure in...
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IPC IPC(8): G21C15/28G21C15/26G21C15/18G21D1/02
CPCG21C15/28G21C15/26G21C15/18G21D1/02Y02E30/30Y02E30/00
Inventor 韩旭王长东李云屹元一单刘卓于明锐
Owner CHINA NUCLEAR POWER ENG CO LTD