Patent ID: 8558417
Filing Date: 2013-10-15
Classification: G21C,Y02E

Abstract:
1. A cooling unit cooling a coil assembly that generates electromagnetic force for driving a nuclear reactor control rod comprising: a coil surrounding a driving shaft of the nuclear reactor control rod so as to generate the electromagnetic force; a coil housing surrounding the coil so as to enclose the coil; a cooling shroud-shell forming a cooling flow path between the cooling shroud-shell and the coil housing, whereby a cooling fluid for cooling heat that is generated in the coil passes through the cooling flow path; and a plurality of cooling fins disposed on the cooling flow path in a radial direction so as to allow heat to be effectively exchanged between the coil and the cooling fluid that flows through the cooling flow path, wherein the coil housing is a hollow tube haying an inner surface and an outer surface, wherein a wiring passage is formed between the inner surface and the outer surface of the coil housing, and wherein the wiring passage extends along a central axis of the coil housing and is a part through which lead wires for supplying electric power to the coil passes.