Heat insulation block

Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of reactor sodium-related thermal insulation, and in particular relates to a thermal insulation block. Background technique [0002] At present, in the reactor insulation scheme, most of the detachable insulation measures for thermal equipment such as containers, pipes, valves, and flanges are assembled with insulation boxes containing different insulation materials. The structure of this insulation box is similar to that of lapped insulation. The modules are spliced ​​piece by piece on site to form the thermal insulation shell on the outer surface of the thermal equipment. However, in the sodium-related system equipment of the sodium-cooled fast reactor, since the coolant is sodium, in view of the special physical and chemical properties of sodium, it is necessary to install an auxiliary electric heating system and a sodium leakage detection device, but the current detachable insulation solutions cannot int...

AI Technical Summary

Problems solved by technology

However, in the sodium-related system equipment of the sodium-cooled fast reactor, since the coolant is sodium, in view of the special physical and chemical properties of sodium, it is necessary to install an auxiliary electric heating system and a sodium leakage detection device, but the current detachable insulation solutions cannot integrate the above Two functions, and in actual operation, due to the mutual interference between the heating wire and other auxiliary devices and the sodium leakage detection module, the signal reliability of the sodium leakage detection module is not high

On the other hand, the auxiliary electric heating system and sodium leakage detection device need to be designed and arranged separately, which cannot meet the actual needs of users mentioned above

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