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    Nuclear reactor
    3.
    发明公开
    Nuclear reactor 失效
    核反应堆。

    公开(公告)号：EP0102631A1

    公开(公告)日：1984-03-14

    申请号：EP83108678.0

    申请日：1983-09-02

    申请人： HITACHI, LTD.

    发明人： Masuhara, Yasuhiro ,  Utamura, Motoaki ,  Kashiwai, Shinichi ,  Yokoyama, Iwao ,  Murata, Shigeto ,  Nakao, Toshitsugu ,  Maeda, Yuichiro

    IPC分类号： G21C9/00 ,  G21C1/08

    CPC分类号： G21C9/00 ,  G21C1/08 ,  Y02E30/40

    摘要： A nuclear reactor is equipped with a cooling water circulation system (2) which includes a water-feed conduit and a drain conduit (5) to circulate the cooling water to and from a pressure vessel (12) which surrounds a reactor core (1), the cooling water having a free liquid level (13) maintained above the reactor core (1). The drain conduit (5) is inserted in the pressure vessel (12) from the upper side toward the lower side relative to free liquid level (13). A double tube (11) consisting of an inner tube (10) and an outer tube (14) maintaining a gap therebetween is formed in the end portion of the drain conduit (5). The inner tube (10) and outer tube (14) being continuous with the drain conduit (5), the opening (7) at the lower end of the inner tube (10) is located below said free liquid level (13) but above the reactor core (1). The opening (15) at the upper end of the outer tube (14) is located above free liquid level (13). The opening (16) at the lower end of said outer tube (14) is located below the reactor core (1).

    Nuclear reactor installation with passive cooling
    5.
    发明公开
    Nuclear reactor installation with passive cooling 失效
    Kernreaktoranlage mit passiverKühlung。

    公开(公告)号：EP0476563A2

    公开(公告)日：1992-03-25

    申请号：EP91115678.4

    申请日：1991-09-16

    申请人： HITACHI, LTD.

    发明人： Fujii, Tadashi ,  Kataoka, Yoshiyuki ,  Fukui, Tohru ,  Hidaka, Masataka ,  Nakao, Toshitsugu ,  Hatamiya, Shigeo ,  Suzuki, Hiroaki ,  Naitoh, Masanori ,  Sumida, Isao ,  Tominaga, Kenji, Hitachi Ose Shataku 367 ,  Niino, Tsuyoshi

    IPC分类号： G21C15/18 ,  G21C13/00 ,  G21C9/004

    CPC分类号： G21C15/18 ,  G21C9/004 ,  G21C13/00 ,  G21Y2002/206 ,  G21Y2004/305 ,  G21Y2004/402 ,  Y02E30/40

    摘要： There is disclosed a nuclear reactor installation. An accumulator-type emergency core cooling system, a gravity-driven core cooling system and an equalizing system for submerging a reactor core are provided within a primary containment vessel containing a reactor pressure vessel (2) in which the reactor core (1) is disposed. These cooling systems are automatically operated sequentially in accordance with the pressure in the reactor pressure vessel without the need for any particular powered source. The primary containment vessel (10) is made of steel, and the interior of this containment vessel is divided into a space containing the reactor pressure vessel (2) and a space containing an operation floor (30) in such a manner that the two spaces are isolated from each other. An opening device (31) is provided between the two spaces so as to communicate the two spaces with each other in the event of an accident, the upper portion of the primary containment vessel being air-cooled while the lower portion of this containment vessel being water-cooled.

    摘要翻译： 披露了核反应堆安装。 在包含反应堆堆芯（1）的反应堆压力容器（2）的初级容纳容器内设置蓄压式应急堆芯冷却系统，重力驱动的核心冷却系统和用于淹没反应堆堆芯的均压系统 。 这些冷却系统根据反应堆压力容器中的压力自动顺序地运行，而不需要任何特定的动力源。 主容纳容器（10）由钢制成，并且该容纳容器的内部被分成包含反应堆压力容器（2）的空间和容纳操作底板（30）的空间，使得两个空间 彼此隔离。 在两个空间之间设置开启装置（31），以便在发生事故的情况下将两个空间彼此连通，一次安全壳的上部是空气冷却的，而该容纳容器的下部是 水冷。