Title:
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
Document Type and Number:
WIPO Patent Application WO/2022/019555
Kind Code:
A1
Abstract:
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.
Inventors:
MOON HO RIM (KR)
KANG SANG HEE (KR)
HA HUIUN (KR)
KANG SANG HEE (KR)
HA HUIUN (KR)
Application Number:
PCT/KR2021/008919
Publication Date:
January 27, 2022
Filing Date:
July 12, 2021
Export Citation:
Assignee:
KOREA HYDRO & NUCLEAR POWER CO (KR)
International Classes:
G21C15/02; F22B37/26; G01F23/00; G21C15/18
Foreign References:
| KR20140047452A | 2014-04-22 | |||
| KR101221812B1 | 2013-01-14 | |||
| KR20200033375A | 2020-03-30 | |||
| KR20130023964A | 2013-03-08 | |||
| KR101224024B1 | 2013-01-21 | |||
| KR101022164B1 | 2011-03-17 |
Attorney, Agent or Firm:
LEE, Un Cheol (KR)
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