STEAM GENERATOR

A steam generator includes: an annular member (21) that surrounds a U-bent portion (18) obtained by collectively disposing bent portions of a plurality of heat transfer tubes and is provided between an outer peripheral portion of the U-bent portion (18) and a tube bundle shroud (3) surrounding the o...

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Bibliographische Detailangaben
Hauptverfasser: IWAMOTO, YOICHI, NAKAGAWA, TOMOYA, MONDE, MASATSUGU, KAWAKAMI, RYOICHI, HIROTA, KAZUO, UMEHARA, RYUICHI, MUROYA, ITARU
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A steam generator includes: an annular member (21) that surrounds a U-bent portion (18) obtained by collectively disposing bent portions of a plurality of heat transfer tubes and is provided between an outer peripheral portion of the U-bent portion (18) and a tube bundle shroud (3) surrounding the outer peripheral portion so as to have a predetermined gap with respect to the U-bent portion (18); a second support member (22) that is provided between the annular member (21) and the tube bundle shroud (3); and a third support member (23) that is attached to a cylinder portion (2) accommodating a plurality of heat transfer tubes and supports the second support member (22).