Melt retention vessel and external melt retention system using the retention vessel
A melt and container technology, applied in the field of nuclear engineering, to achieve enhanced heat transfer effects, increased reliability, and increased heat transfer area
Active Publication Date: 2021-01-15
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology
However, in the multi-crucible scheme, problems such as "uniform distribution of melt", "connection of crucibles", and "accumulation of air bubbles between crucibles" are difficult to solve
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[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] The research and utilization of sacrificial materials has always been a matter of great concern in the retention strategy of molten materials. For example, the water-soluble and alkaline borate mentioned in the patent US-Pat4300983, whether the filler is heated and melted or melted with the oxide melt, the high-density metal melt will sink to the bottom of the molten pool, and the oxide will float. Based on the structure of the upper layer; for example, the patent US-Pat5410577 adopts alternately arranging multiple layers of glass material and lead material layers, and uses the characteristics of low glass density and high lead density as the later heat insulation layer. Based on this design idea, this patent proposes a new type of sacrificial material layout optimization design, which combines sacrificial materials with a density lower than th...
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Abstract
The invention relates to a melt retention vessel and an out-of-reactor melt retention system adopting the melt retention vessel. The melt retention vessel comprises a crucible body and a latticed cubic structure filled in a crucible main body, wherein the crucible body comprises a main crucible and an auxiliary crucible; and the main crucible and the auxiliary crucible are coupled and connected. The system comprises a cooling space arranged below a pressure vessel, the melt retention vessel arranged in the cooling space, a cooling water pipeline leading to the upper part of the cooling space,a nano fluid cooling pipeline leading to the lower part of the cooling space and a nano fluid preparation device connected with the nano fluid cooling pipeline. The melt retention vessel provided by the invention has the beneficial effects that a monomer crucible is coupled, and the key problem that multiple crucibles are uniformly distributed is also solved while heat exchange area of the monomercrucible is increased; sacrificial materials higher or lower than melt density are adopted at different positions, the sacrificial materials are distributed at the upper part and the lower part of melt while functions are considered, and isolation protection and auxiliary heat exchange effects are respectively achieved.
Description
technical field [0001] The invention belongs to the field of nuclear engineering, and in particular relates to a molten matter retention container and a reactor external molten matter retention system using the retention container. Background technique [0002] At present, the smelt retention technology is divided into the retention of the smelt in the pile and the retention of the smelt outside the pile. Compared with the melt retention strategy in the reactor, the melt retention strategy outside the reactor can meet the core melt cooling and heat exchange requirements of higher power reactors, mainly in the following aspects: 1) The retention strategy outside the reactor has a larger heat transfer surface and 2) The extra-heap retention strategy can introduce a large amount of sacrificial materials to consume a certain amount of sensible heat of the melt. [0003] The smelt retention vessels adopting the off-pile retention strategy mainly include single-crucible and multi...
Claims
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IPC IPC(8): G21C9/016
CPCG21C9/016Y02E30/30
Inventor 王洪亮元一单马卫民李炜郭强韩旭
Owner CHINA NUCLEAR POWER ENG CO LTD