The invention belongs to the technical field of
sodium-related heat preservation of reactors, and specifically relates to a heat insulation block, which is used for heat insulation and heat tracing ofa
sodium-related pipeline (10) of a
sodium cooled fast reactor and comprises a heat insulation box (7) detachably spliced and attached to the sodium-related pipeline (10), wherein heat insulation materials are filled in the heat insulation box (7), an
electric heating wire (4) is arranged on the outer surface of an inner wall (9) of the heat insulation box (7), and a quick connector (6) connectedwith the
electric heating wire (4) is arranged on the outer surface of a heat insulation box outer wall (8) of the heat insulation box so as to provide power to the
electric heating wire (4). The heat insulation block provided by the invention realizes the integration of components such as the electric heating wire, a sodium leakage detection wire, a
thermocouple and the like in the sodium-related pipeline and an equipment
system of a fast reactor with a heat insulation structure module, can realize the
modular design of an integrated heat insulation structure of the high-temperature sodium pipeline of the fast reactor, simplify installation construction and later maintenance operations, reduce manufacturing cost and improve comprehensive
economic benefits.