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2 187 849

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IPC

(21) (22)

Application

2000109407/06, 2000-04-14

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Start date

2000-04-14

(22)

Actual filing date

2000-04-14

(45)

Published

2002-08-20

(72)

Inventor

Rozhkov V.V.Chapaev I.G.Batuev V.I.Bychikhin N.A.Chinnov A.V.Zarubin M.G.Enin A.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsentratov"

METHOD FOR MANUFACTURING SPACER GRIDS WITH HEXAGONAL CELLS Russian patent published in 2002 - IPC

Abstract RU 2187849 C2

FIELD: nuclear power engineering; manufacture of fuel assemblies from fuel elements for nuclear reactors. SUBSTANCE: method includes pre-manufacture procedure of forming hexagonal cell from metal sheet, its shaping in the form of half-cell, manufacture of hexagonal cells in hexagonal-cell field and spacer grid as a whole with hexagonal-cell field secured in rim. Premanufacture procedure is made on metal sheet whose size equals that of future hexagonal-cell field whereon linear notches are made, their length being equal to three faces of future hexagonal cell; these notches are spaced apart through distance equal to height of future cell; half-cells are shaped perpendicular to mentioned notches in the form of longitudinal depressions and longitudinal projections throughout entire length of sheet identical in sectional area to half the hexagonal cell; hexagonal cell and cell field are made by folding the sheet at notches in alternating order from top downwards through 180 deg. perpendicular to longitudinal depressions and longitudinal projections to form hexagonal cells. EFFECT: reduced manufacturing cost, improved workmanship, enhanced operating reliability of spacer grid. 1 cl, 3 dwg

Similar patents RU2187849C2

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RU 2 187 849 C2

Authors

Rozhkov V.V.

Chapaev I.G.

Batuev V.I.

Bychikhin N.A.

Chinnov A.V.

Zarubin M.G.

Enin A.A.

Dates

2002-08-20—Published

2000-04-14—Filed