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2 120 670

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IPC

(21) (22)

Application

97105557/25, 1997-04-09

(22)

Actual filing date

1997-04-09

(45)

Published

1998-10-20

(72)

Inventor

Rabin A.I.Batuev V.I.Chapaev I.G.Rozhkov V.V.Pluzhnikov D.V.Bychikhin N.A.Gushchin S.F.Vasil'Chenko I.N.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Khimkontsentratov"

NUCLEAR REACTOR FUEL ASSEMBLY Russian patent published in 1998 - IPC

Abstract RU 2120670 C1

FIELD: nuclear power engineering; fuel assemblies for nuclear reactors of primarily VVER-1000 type. SUBSTANCE: fuel assembly has fuel bundle installed in frame of spacer grids mounted on tubular channels secured, together with fuel rods, through bottom ends in bottom grid which is provided with adapter, shank with supporting ribs joined to bottom-grid adapter, head mounted on upper ends of tubular channels that has plate and lattice joined together through taper member provided with coolant passing ports; novelty is that taper member has at least twelve taper supporting ribs radially arranged over head perimeter with their larger sides secured to head lattice and smaller ones, to head plate; coolant passing ports are formed by taper supporting ribs, head plate and lattice between each pair of supporting ribs. EFFECT: reduced amount of parasitic structural material in head, facilitated manufacture, and reduced pressure drop in reactor channel during its operation. 2 cl, 4 dwg

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RU 2 120 670 C1

Authors

Rabin A.I.

Batuev V.I.

Chapaev I.G.

Rozhkov V.V.

Pluzhnikov D.V.

Bychikhin N.A.

Gushchin S.F.

Vasil'Chenko I.N.

Dates

1998-10-20—Published

1997-04-09—Filed