公开(公告)号：US20160293281A1

公开(公告)日：2016-10-06

申请号：US15099398

申请日：2016-04-14

申请人： Hitachi-GE Nuclear Energy, Ltd.

发明人： Kenichi KATONO ,  Masao CHAKI ,  Kazuaki KITO

IPC分类号： G21C9/012 ,  G21C13/02 ,  G21C15/18

摘要： When a power source is lost after an operation stop of a nuclear power plant, a first open/close valve is opened via a first battery at an early stage and steam in a reactor pressure vessel (RPV) is condensed in a suppression pool. The heat of the water in the suppression pool is transmitted to a cooling water pool located below inner space between first and second reactor containment vessels surrounding the RPV. A second open/close valve is opened via a second battery at the early stage and cooling water in a tank is injected into the RPV. After the early stage, a third open/close valve is opened via a third battery, and a cooling medium becomes steam by an evaporator in the RPV, the steam being condensed by a condenser disposed in the inner space to become a liquid of the cooling medium and is returned to the evaporator.

公开(公告)号：US20130223581A1

公开(公告)日：2013-08-29

申请号：US13768600

申请日：2013-02-15

申请人： Hitachi-GE Nuclear Energy, Ltd.

发明人： Kenichi KATONO ,  Masao CHAKI ,  Kazuaki KITO

IPC分类号： G21C15/18 ,  G21C9/016

CPC分类号： G21C9/012 ,  G21C9/016 ,  G21C13/02 ,  G21C15/18 ,  Y02E30/40

摘要： When a power source is lost after an operation stop of a nuclear power plant, a first open/close valve is opened via a first battery at an early stage and steam in a reactor pressure vessel (RPV) is condensed in a suppression pool. The heat of the water in the suppression pool is transmitted to a cooling water pool located below inner space between first and second reactor containment vessels surrounding the RPV. A second open/close valve is opened via a second battery at the early stage and cooling water in a tank is injected into the RPV. After the early stage, a third open/close valve is opened via a third battery, and a cooling medium becomes steam by an evaporator in the RPV, the steam being condensed by a condenser disposed in the inner space to become a liquid of the cooling medium and is returned to the evaporator.

摘要翻译： 当在核电厂的运行停止之后电源丢失时，第一开/关阀在早期通过第一电池打开，反应堆压力容器（RPV）中的蒸汽在抑制池中冷凝。 抑制池中的水的热量被传递到位于围绕RPV的第一和第二反应堆容纳容器之间的内部空间下方的冷却水池。 第二个打开/关闭阀在早期通过第二个电池打开，并且将罐中的冷却水注入到RPV中。 在早期阶段之后，通过第三电池打开第三开/关阀，并且冷却介质通过RPV中的蒸发器变成蒸汽，蒸汽由设置在内部空间中的冷凝器冷凝成为冷却液体 介质并返回到蒸发器。