公开(公告)号：US09859027B2

公开(公告)日：2018-01-02

申请号：US14162677

申请日：2014-01-23

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Won Jae Lee ,  Cheon Tae Park ,  Keung Koo Kim ,  Soo Jai Shin ,  Seung Yeop Yoo ,  Young Min Bae ,  Joo Hyung Moon ,  Ju Hyeon Yoon

IPC: G21C15/18

CPC classification number: G21C15/18 ,  Y02E30/40

Abstract: The present disclosure may disclose a multi stage safety injection device, including a safety injection tank formed to contain coolant to be injected into a reactor vessel by a gravitational head of water when an accident occurs in which the pressure or water level of the reactor vessel is decreased, a pressure balance line connected to the reactor vessel and safety injection tank to form a pressure balance between the reactor vessel and the safety injection tank, and a set of safety injection lines connected to the safety injection tank and the reactor vessel to inject coolant to the reactor vessel in a pressure balance state between the reactor vessel and the safety injection tank, and connected to the safety injection tank with different heights to reduce a flow rate of coolant injected into the reactor vessel step by step according to the water level reduction of the safety injection tank in order to inject coolant to the reactor vessel at multi stages.

公开(公告)号：US09761334B2

公开(公告)日：2017-09-12

申请号：US14172808

申请日：2014-02-04

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young In Kim ,  Keung Koo Kim ,  Cheon Tae Park ,  Seung Yeop Yoo ,  Young Min Bae ,  Joo Hyung Moon ,  Soo Jai Shin ,  Han Ok Kang ,  Jun Lee ,  Won Jae Lee ,  Tae Wan Kim ,  Keun Bae Park ,  Ju Hyeon Yoon

IPC: G21C15/18 ,  G21D3/06

CPC classification number: G21C15/18 ,  G21D3/06 ,  Y02E30/40

Abstract: The present disclosure may disclose a multi stage safety injection device and a passive safety injection system having the same, including a safety injection tank formed to contain coolant to be injected into a reactor vessel by a gravitational head of water when an accident occurs in which the pressure or water level of the reactor vessel is decreased, a pressure balance line connected to the reactor vessel and safety injection tank to form a pressure balance state between the reactor vessel and the safety injection tank, a safety injection line connected to a lower end portion of the safety injection tank and the reactor vessel to inject coolant to the reactor vessel in a pressure balance state between the reactor vessel and the safety injection tank, and a flow control line extended from the safety injection line to an inner portion of the safety injection tank, and provided with safety injection ports into which coolant is injected at predetermined heights, respectively, to reduce the flow rate of coolant injected into the reactor vessel step by step according to the water level reduction of the safety injection tank, in order to inject coolant to the reactor vessel at multi stages.

公开(公告)号：US09111651B2

公开(公告)日：2015-08-18

申请号：US13845531

申请日：2013-03-18

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Young Min Bae ,  Young In Kim ,  Keung Koo Kim ,  Seung Yeop Yoo

IPC: G21C15/18 ,  G21C1/32

CPC classification number: G21C15/18 ,  G21C1/326 ,  Y02E30/40

Abstract: Disclosed is a heat exchanger for a passive residual heat removal system, which improves heat transfer efficiency by expanding a heat transfer area. A heat exchange tube includes a first member connected to a steam pipe through which steam generated from a steam generator of a nuclear reactor circulates, and a second member connected to both of the first member and a feed water pipe used to supply water to the steam generator provided in the nuclear reactor, and the first member has the shape different from that of the second member, thereby expanding the heat transfer area so that the heat transfer efficiency is improved.

Abstract translation: 公开了一种用于被动式余热除热系统的热交换器，其通过扩大传热面积来提高传热效率。 热交换管包括连接到蒸汽管的第一构件，通过其从核反应堆的蒸汽发生器产生的蒸汽循环，以及连接到第一构件和用于向蒸汽供应水的给水管两者的第二构件 并且第一构件具有与第二构件的形状不同的形状，从而扩大传热面积，从而提高了传热效率。