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1. 发明公开

EP4187554A1 REACTOR COOLING SYSTEM FOR DISASTER ACCIDENT, AND REACTOR COOLING METHOD USING SAME 审中-实审
公开(公告)号：EP4187554A1
公开(公告)日：2023-05-31
申请号：EP21847083.9
申请日：2021-07-12
申请人： Korea Hydro & Nuclear Power Co., Ltd
发明人： MOON, Ho Rim , KANG, Sang Hee , HA, Huiun
IPC分类号： G21C15/18 , G21C15/12 , G21C15/243
摘要： The present invention relates to a reactor cooling system for a disaster accident, and a reactor cooling method using same, and, more specifically, to a reactor cooling system and a reactor cooling method using same, the system performing heat exchange on high-temperature contaminated water generated at a nuclear power generation facility when a serious accident occurs, so as to use same as a coolant, and thus can maximally suppress the discharge of contaminated water to the sea. To this end, provided is the reactor cooling system for a disaster accident, comprising: the nuclear power generation facility; a seawater storage tank for providing a water storage space so that seawater can be stored therein; a seawater inflow path and a seawater discharge path provided on one side and the other side, respectively, of the seawater storage tank, the seawater inflow path providing a pipeline that enables the seawater to flow into the seawater storage tank, and the seawater discharge path providing a pipeline that enables the seawater to be discharged from the seawater storage tank to the sea; a heat exchanger provided in an accommodation space of the seawater storage tank; a contaminated water supply path providing a pipeline that enables the contaminated water generated at the nuclear power generation facility to be transferred to the heat exchanger when a serious accident occurs; and a contaminated water discharge path which is provided between the heat exchanger and the nuclear power generation facility, and which provides a pipeline that enables the contaminated water having been heat exchanged with the seawater of the seawater storage tank through the heat exchanger to be discharged to the nuclear power generation facility.

2. 发明公开

EP4187553A1 PASSIVE CONDENSATION TANK COOLING SYSTEM OF PASSIVE AUXILIARY FEEDWATER SYSTEM 审中-实审
公开(公告)号：EP4187553A1
公开(公告)日：2023-05-31
申请号：EP21846654.8
申请日：2021-07-13
申请人： Korea Hydro & Nuclear Power Co., Ltd
发明人： MOON, Ho Rim , KANG, Sang Hee , HA, Huiun
IPC分类号： G21C15/18 , G21C15/243 , G21C13/08
摘要： The present invention relates to a passive condensation tank cooling system of a passive auxiliary feedwater system and, more specifically, to a passive condensation tank cooling system of a passive auxiliary feedwater system, the cooling system having a passive condensation tank that includes an inner wall and an outer wall, having a cooling means interposed between the inner wall and the outer wall so that the temperature of heat-exchange water can be prevented from rising during condensation in the passive condensation tank, and thus the cooling performance of the passive auxiliary feedwater system can be improved, and being capable of contributing to the ensuring of a long-term cooling function during an extreme disaster accident. To this end, provided is the passive condensation tank cooling system of a passive auxiliary feedwater system, the cooling system comprising: the passive condensation tank having a water storage space in which the heat-exchange water is stored; and the passive auxiliary feedwater system including a condenser submerged in the heat-exchange water of the passive condensation tank, wherein the passive condensation tank includes: the outer wall for forming the outermost wall of the passive condensation tank; and the inner wall spaced from the outer wall to form the water storage space, and the cooling means capable of absorbing heat of the heat-exchange water is interposed between the outer wall and the inner wall.

3. 发明公开

EP4187552A1 SYSTEM FOR UTILIZING UNUSED HEAT-EXCHANGE WATER OF PASSIVE AUXILIARY FEEDWATER SYSTEM, AND REACTOR COOLING CONTROL METHOD UTILIZING UNUSED HEAT-EXCHANGE WATER OF PASSIVE AUXILIARY FEEDWATER SYSTEM 审中-实审
公开(公告)号：EP4187552A1
公开(公告)日：2023-05-31
申请号：EP21846315.6
申请日：2021-07-12
申请人： Korea Hydro & Nuclear Power Co., Ltd
发明人： MOON, Ho Rim , KANG, Sang Hee , HA, Huiun
IPC分类号： G21C15/02 , G21C15/18 , F22B37/26 , G01F23/00
摘要： The present invention relates to a system for utilizing unused heat-exchange water of a passive auxiliary feedwater system, and a reactor cooling control method using unused heat-exchange water of a passive auxiliary feedwater system, and, more specifically, to a system for utilizing unused heat-exchange water of a passive auxiliary feedwater system, and a reactor cooling control method utilizing unused heat-exchange water of a passive auxiliary feedwater system, the system being capable of utilizing, as a coolant, unused heat-exchange water remaining after being heat-exchanged in a passive condensation tank, so that the efficiency of a reactor cooling operation can increase and the efficiency of initial response during the occurrence of a reactor accident can increase. To this end, the present invention relates to the passive auxiliary feedwater system of a nuclear power generation facility, the system comprising: a steam generator for generating steam by using the heat of a reactor; the passive condensation tank in which the heat-exchange water is stored; a condenser provided inside the passive condensation tank and spaced from the bottom of the passive condensation tank; a steam supply pipe which is provided between the steam generator and the inlet of the condenser of the passive condensation tank, and which provides a pipeline for blocking the supply of steam toward a turbine and causing the steam to branch off toward the condenser when the operation of the reactor stops; and a condensate water recovery pipe which is provided between the outlet of the condenser and the steam generator and which provides a pipeline for recovering, to the steam generator, condensate water condensed through the condenser. The present invention provides the system for utilizing unused heat-exchange water of a passive auxiliary feedwater system, the system having a residual water discharge path provided between the passive condensation tank and the condensate water recovery pipe so that residual water remaining between the condenser and the bottom of the passive condensation tank is discharged to the condensate water recovery pipe.

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