Nuclear reactor primary circuit

G - Physics – 21 – C

Patent

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Details

G21C 15/22 (2006.01) B01F 3/08 (2006.01) B01F 5/06 (2006.01) F15D 1/02 (2006.01) G21C 13/032 (2006.01) G21D 1/02 (2006.01)

Patent

CA 2627525

The invention relates to a nuclear reactor primary circuit comprising a primary pipeline (30), which defines an internal volume (32) and in which a primary nuclear reactor coolant downwardly runs, an additional pipeline (26) which is branched to the primary pipeline (30) and defines an internal volume communicating with the internal volume (32) of the primary pipeline (30) and a cuff (36) whose first end (50) is connected to the additional pipeline (26) and the second free end (52) is positioned in the internal volume (32) of the primary pipeline (30). According to said invention, the second end (52) is delimited by a free peripherial edge (53) comprising at least one upstream and downstream sections (56, 58) which are oriented towards the upstream, wherein the upstream section (56) penetrates into the internal volume (32) deeper from the primary pipeline (30) than the downstream section (58).

L'invention concerne un circuit primaire de réacteur nucléaire, comprenant - une tuyauterie primaire (30) délimitant un volume intérieur (32) dans lequel circule un fluide primaire de refroidissement du réacteur nucléaire, ledit fluide primaire circulant de l'amont vers l'aval de la tuyauterie primaire (30) ; - une tuyauterie annexe (26) piquée sur la tuyauterie primaire (30), la tuyauterie annexe (26) délimitant un volume interne communiquant avec le volume intérieur (32) de la tuyauterie primaire (30) ; - une manchette (36) présentant une première extrémité (50) liée à la tuyauterie annexe (26), et une seconde extrémité libre (52) située dans le volume intérieur (32) de la tuyauterie primaire (30). Selon l'invention, la seconde extrémité (52) de la manchette (36) est délimitée par un bord périphérique libre (53) présentant au moins des secteurs amont et aval (56, 58) tournés respectivement vers l'amont et l'aval de la tuyauterie primaire (30), le secteur amont (56) pénétrant plus profondément dans le volume intérieur (32) à partir de la tuyauterie primaire (30) que le secteur aval (58).

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