EP 3857568 A1 20210804 - CONTROL ROD DRIVE MECHANISM WITH HEAT PIPE COOLING
Title (en)
CONTROL ROD DRIVE MECHANISM WITH HEAT PIPE COOLING
Title (de)
STEUERSTABANTRIEBSMECHANISMUS MIT KÜHLROHRKÜHLUNG
Title (fr)
MÉCANISME D'ENTRAÎNEMENT DE TIGE DE COMMANDE AVEC REFROIDISSEMENT DE CALODUC
Publication
Application
Priority
- US 201862736250 P 20180925
- US 2018067128 W 20181221
Abstract (en)
[origin: WO2020068146A1] A cooling system for a nuclear reactor control rod drive mechanism (CRDM) includes an evaporation section located within or next to the CRDM and a condensation section fluidly coupled to the evaporation section. The cooling system may include a set of heat fins that extend up from drive coils in the CRDM and heat pipes that extend through the drive coils and heat fins. A fluid evaporates while in the evaporation section of the heat pipes from heat generated by the CRDM and moves out of the evaporation section into the condensation section in the heat fins. The fluid cools and condensates while in the condensation section, recirculating back into the evaporation section. This passive natural circulation cooling system reduces or eliminates the number of water hoses, piping, and other water pumping equipment typically used for cooling CRDM, or the requirement for air cooling, increasing nuclear reactor reliability and simplifying nuclear reactor operation and maintenance.
IPC 8 full level
G21C 7/12 (2006.01); G21C 15/02 (2006.01); G21C 15/257 (2006.01); G21D 1/02 (2006.01)
CPC (source: EP KR)
G21C 7/12 (2013.01 - EP KR); G21C 15/02 (2013.01 - EP KR); G21C 15/257 (2013.01 - EP KR); G21D 1/02 (2013.01 - EP KR); Y02E 30/00 (2013.01 - EP); Y02E 30/30 (2013.01 - EP KR)
Citation (search report)
See references of WO 2020068146A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020068146 A1 20200402; CA 3111773 A1 20200402; CN 112753078 A 20210504; EP 3857568 A1 20210804; JP 2022509725 A 20220124; JP 7187682 B2 20221212; KR 102607783 B1 20231130; KR 20210082167 A 20210702
DOCDB simple family (application)
US 2018067128 W 20181221; CA 3111773 A 20181221; CN 201880098004 A 20181221; EP 18836573 A 20181221; JP 2021513384 A 20181221; KR 20217010046 A 20181221