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公开(公告)号：US10229762B2
公开(公告)日：2019-03-12
申请号：US14271316
申请日：2014-05-06
Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
Inventor： Young In Kim , Keung Koo Kim , Young Min Bae , Ju Hyeon Yoon , Jae Joo Ha , Won Jae Lee , Tae Wan Kim
Abstract: The present disclosure provides a cooling system of an emergency cooling tank, which enables long-term cooling without refilling cooling water, in case of the change in a quantity of heat transferred to the emergency cooling tank according to a lapse of time upon an occurrence of an accident of a nuclear reactor, and a nuclear power plant having the same. The emergency cooling tank cooling system includes an emergency cooling tank, a heat exchanging device installed to be exposed to an outside of the emergency cooling tank to operate in air, and configured to externally emit such that the operation of the emergency cooling tank is continued even without refilling the cooling water, and an opening and closing unit installed at an upper portion of the emergency cooling tank to be located higher than a water level of the cooling water.
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公开(公告)号：US09583224B2
公开(公告)日：2017-02-28
申请号：US13939547
申请日：2013-07-11
Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
Inventor： Joo Hyung Moon , Won Jae Lee , Keung Koo Kim , Cheon Tae Park , Young In Kim , Sung Kyun Zee , Keun Bae Park
Abstract: A passive safety system includes a containment, a reactor in the containment, a plurality of safety injection tanks connected with the reactor and having water and nitrogen gas to supply water thereof into the reactor through a safety injection line communicating to the first safety injection line upon a loss of coolant accident, a plurality of core makeup tanks connected with the reactor to supply water thereof into the reactor through a second safety injection line communicating to a safety injection line upon the loss of coolant accident, and a plurality of passive residual heat removal systems to remove residual heat from the reactor upon the loss of coolant accident or a non-loss of coolant accident. The water in each of the safety injection tank is stably supplied to the reactor for many hours by a differential head resulting from gravity or gas pressure.
Abstract translation: 被动安全系统包括容纳物，容纳物中的反应器，与反应器连接的多个安全注射罐，并具有水和氮气，以通过与第一安全注射管线连通的安全注入管线将水供应到反应器中 冷却剂事故的损失，与反应器连接的多个核心化妆池，通过在冷却剂事故损失时与安全注入管线相通的第二安全注入管线将水供应到反应器中，以及多个被动残余热消除 在冷却剂事故损失或不失去冷却剂事故时，从反应堆中除去残余热量的系统。 每个安全注射罐中的水通过由重力或气体压力导致的差压头稳定地供应到反应器多个小时。
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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
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.
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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
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.
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