NUCLEAR FUSION BLANKET

PURPOSE:To enhance a cushion property so that the space for a temp. control layer can be reduced and the regulation of the heat between a structural material and a cooling pipe is facilitated by using ceramic fibers for the temp. control layer. CONSTITUTION:The blanket of a nuclear fusion reactor converts and recovers nuclear fusion energy to thermal energy and recovers tritium produced. There is a need for controlling the temp. in the tritium bleeder for the characteristics that the fluctuating heat is generated therein. The temp. of the cooling pipe 2 is, therefore, required to be kept at a prescribed temp. and the temp. of a shell 3, partition plate 4, etc., at the above-mentioned temp. or below. The temp. control layer 5 of the ceramic fibers 6 is installed between the bleeder 1 and the cooling tube 2 or the shell 3 and the partition plate 4. The fibers 6 act as the cushion to a dimensional change and oscillation and have more than a required high-temp. resistant characteristic, high stability to high radiations, compatibility with a dimensional change and oscillation, etc. The required space is small and the thermal conductivity is adjustable. The practicability of the blanket is enhanced in this way.