PASSIVE RESIDUAL HEAT REMOVAL SYSTEM AND NUCLEAR POWER PLANT HAVING THE SAME

The present invention relates to a passive residual heat removal system, capable of circulating a cooling fluid to a steam generator through a main steam pipe connected to an upper outlet of the steam generator, and a main water supply pipe connected to a lower inlet of the steam generator, in order...

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Main Authors HA, JAE JOO, BAE, YOUNG MIN, KIM, YOUNG IN, YOON, JU HYEON, SHIN, SOO JAI, KANG, HAN OK, PARK, CHEON TAE, KIM, TAE WAN, MOON, JOO HYUNG, RYU, SEUNG YEOB, JUNG, SEO YOON, KIM, YOUNG SOO, KIM, KEUNG KOO, HAN, HUN SIK, KANG, KYUNG JUN
Format Patent
LanguageEnglish
Korean
Published 10.12.2015
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Summary:The present invention relates to a passive residual heat removal system, capable of circulating a cooling fluid to a steam generator through a main steam pipe connected to an upper outlet of the steam generator, and a main water supply pipe connected to a lower inlet of the steam generator, in order to remove residual heat of a core and sensible heat of a reactor coolant system in the event of an accident. The system includes a supplement facility which supplies a supplement cooling fluid or stores a residual cooling fluid in order to keep the flux of the cooling fluid in a preset range. The supplement facility includes: a supplement tank installed between the upper outlet and the lower inlet of the steam generator at a preset height in order to passively supply the supplement cooling fluid or store residual cooling fluid according to the flux of the cooling fluid; a first connection pipe connected to the supplement tank and the main steam pipe in order to form a path to allow the cooling fluid, discharged from the steam generator to the main steam pipe, to flow into the supplement tank; and a second connection pipe connected to the main water supply pipe and the supplement tank in order to form a supply path of the supplement cooling fluid, supplied from the supplement tank. 본 발명은, 사고 시 원자로냉각재계통의 현열과 노심의 잔열을 제거하도록, 증기발생기의 하부 입구에 연결된 주급수관과 상기 증기발생기의 상부 출구에 연결된 주증기관을 통해 상기 증기발생기로 냉각유체를 순환시키는 피동잔열제거계통에 있어서, 상기 냉각유체의 유량을 기설정된 범위 내로 유지시키도록 잉여 냉각유체를 수용하거나 보충 냉각유체를 공급하는 보충설비를 포함하고, 상기 보충설비는, 상기 냉각유체의 유량에 따라 피동적으로 상기 잉여 냉각유체를 수용하거나 상기 보충 냉각유체를 공급하도록 상기 증기발생기의 하부 입구와 상부 출구 사이의 기설정된 높이에 설치되는 보충탱크; 상기 증기발생기로부터 상기 주증기관으로 토출된 냉각유체를 상기 보충탱크로 흐르게 하는 유로를 형성하도록 상기 주증기관과 상기 보충탱크에 연결되는 제1연결배관; 및 상기 보충탱크로부터 공급되는 보충 냉각유체의 공급 유로를 형성하도록 상기 보충탱크와 상기 주급수관에 연결되는 제2연결배관을 포함하는 피동잔열제거계통을 제공한다.
Bibliography:Application Number: KR20140093457