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Nuclear reactor flow calming assembly

A technology of nuclear reactors and reactors, applied in the field of nuclear reactors, can solve problems such as not having the best performance of fluid steering

Pending Publication Date: 2020-09-18
ELECTRICITE DE FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] However, the current structure is primarily designed to support the core's internal neutron measurement system, the RIC, and does not have optimal performance in limiting fluctuations associated with fluid diversion

Method used

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  • Nuclear reactor flow calming assembly
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  • Nuclear reactor flow calming assembly

Examples

Experimental program
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Embodiment Construction

[0062] Description of one or several embodiments

[0063] The present invention is applicable to flow smoothing components at the inlet of the core 1 of a nuclear reactor, such as figure 2 As shown, the components include:

[0064] a. a container 2 bounded by an outer wall 3 and a container bottom 4,

[0065]b. an inner housing 5 delimited by a substantially cylindrical inner wall 6, the housing 5 is located inside the container 2 such that the inner wall 6 and the outer wall 3 define an injection circuit 7 having a substantially annular cross-section, the lower end of the housing 5 is open so as to allow The fluid injected into the injection circuit 7 is circulated to the bottom 4 of the container, then passed and circulated through the housing 5,

[0066] c. The core 1 located inside the casing 5,

[0067] d. The support element 8 at the bottom of the housing 5 .

[0068] The support element 8 is configured to support the internal RIC (Reactor Core Measurement System) o...

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PUM

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Abstract

The invention concerns a flow calming assembly for a nuclear reactor comprising a vessel (2), an enclosure (5) situated in the vessel (2), a fluid being circulated between the vessel (2) and the enclosure (5) in order to then circulate in the enclosure (5) after a reversal of its direction of circulation, a diffusion element (9) being configured for limiting the formation of swirling flows in theenclosure (5) and making the distribution of flow rates uniform over the cross-section of the enclosure (5), a diffusion element (9) and a flow calming method in such an reactor.

Description

technical field [0001] The field of the invention is nuclear reactors. [0002] The invention relates to the flow in the vessel of a second or third generation pressurized water reactor of a nuclear power plant, for which purpose the core is cooled by means of a heat transfer fluid circulating through the core. Background technique [0003] Generally, such a system comprises a core 1 comprising nuclear fuel elements immersed in a heat transfer fluid driven by circulation in order to exchange heat with said core. [0004] Core 1 is usually contained in vessel 2, such as figure 1 As shown, the heat transfer fluid is circulated in the container. [0005] The container 2 is delimited by a substantially cylindrical outer wall 3 , wherein the lower end of the container 2 is closed by a container bottom 4 . [0006] Typically, the container bottom 4 has a substantially hemispherical shape. [0007] The inner casing 5 is located inside the container 2 . [0008] The inner housi...

Claims

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Application Information

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IPC IPC(8): G21C13/02G21C15/00
CPCG21C13/02G21C15/00Y02E30/30
Inventor 理查德·霍华德徐婷婷塞尔吉·贝莱特
Owner ELECTRICITE DE FRANCE