▎ 摘　　要

NOVELTY - The structure has a reactor core main body (3) formed with a mounting through hole. A column body is fixed with the mounting through hole. An outer wall surface of the column body is circumferentially connected with an outer screw thread. An inner screw thread is fixed with an inner wall surface of the mounting through hole. The column body is detachably fixed with the mounting through hole through the outer screw thread and the inner screw thread, where the column body is a fuel rod (1) or heat pipe (2) and graphene powder is filled between an outer wall surface of the column body and an inner wall surface of the mounting through hole. USE - Heat pipe solid reactor core structure for use in underwater space station. Uses include but are not limited to land mobile nuclear power supply, offshore energy exploitation, space detection and potential energy supply option of small local area power heat supply. ADVANTAGE - The structure has simple structure, reliable connection, convenient installation, less additional fixed connection structure and high heat transfer efficiency, and changes a mechanical contact area between the heat pipe and the reactor core main body when the temperature is changed and enhances heat transfer performance of the reactor core. DESCRIPTION OF DRAWING(S) - The drawing shows a side sectional view of a heat pipe solid reactor core structure. Fuel rod (1) Heat pipe (2) Reactor core main body (3)