Patent ID: 8885790
Filing Date: 2014-11-11
Classification: G21C,Y02E

Abstract:
1. A lower end plug for an internally and externally-cooled annular nuclear fuel rod comprising: a support with a slenderness ratio in the range of 1 to 20; a coolant inflow part with an inner inflow space and a plurality of inflow holes in a wall thereof, so as to interact with the inflow space, coupled to a lower end of the internally and externally-cooled annular nuclear fuel rod at an upper end thereof, and extending from an upper end of the support in a reverse conical shape such that the inflow space interacts with an inner channel of the internally and externally-cooled annular nuclear fuel rod; and a coupler extending from a lower end of the support and coupled with a handling tool of the internally and externally-cooled annular nuclear fuel rod, wherein each of the inflow holes is inclined in such a manner that an outer end thereof, exposed outwards, is located lower than an inner end thereof, exposed inwards.