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2 800 030

(13)

(51)

IPC

G21C3/32(2006-01-01)

(21) (22)

Application

2022109127, 2019-10-15

(24)

Start date

2019-10-15

(22)

Actual filing date

2019-10-15

(45)

Published

2023-07-14

(72)

Inventor

Ivanov Roman SergeevichShustov Mstislav AleksandrovichEnin Anatolij AlekseevichPolyakov Dmitrij LeonidovichYurin Petr Mikhajlovich

(73)

Holder

Aktsionernoe Obshchestvo

NUCLEAR REACTOR FUEL ASSEMBLY BOTTOM NOZZLE Russian patent published in 2023 - IPC G21C3/32

Abstract RU 2800030 C1

FIELD: nuclear engineering.

SUBSTANCE: invention relates namely to fuel assemblies of nuclear power reactors with pressurized water. The bottom nozzle of the fuel assembly of a nuclear reactor contains a support element, a diffuser, a hexagonal frame with ribs of variable height fixed to non-adjacent corners of the hexagonal frame with an offset from the plane of symmetry of the angles in such a way that the end of one rib is conjugated with the side surface of the other rib. The profile of the ribs is made with a ledge on the lateral surface of the ribs and a thinning of the upper end of the ribs, the ledge serves to install the rim of the anti-debris filter, and the thinning is used to abut against the support grid of the bundle of fuel elements.

EFFECT: invention makes it possible to improve the reliability of the bottom nozzle and the fuel assembly as a whole by reducing the hydraulic resistance of the bottom nozzle and vibration loading of the fuel rods.

2 cl, 5 dwg

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RU 2 800 030 C1

Authors

Ivanov Roman Sergeevich

Shustov Mstislav Aleksandrovich

Enin Anatolij Alekseevich

Polyakov Dmitrij Leonidovich

Yurin Petr Mikhajlovich

Dates

2023-07-14—Published

2019-10-15—Filed