Ex-reactor melt heat conduction device adopting heat pipe to enhance heat transfer after nuclear power station accident

The utility model discloses an out-of-pile melt heat conduction device for enhancing heat transfer by adopting a heat pipe after a nuclear power station accident, and relates to the technical field of heat conduction devices. Comprising an outer wall, an inner wall is arranged in the outer wall, a steam channel wall is arranged on the inner side of the inner wall, a pressure container is arranged on the inner side of the steam channel wall, a reactor core melt retention device is arranged between the bottom of the inner wall and the outer wall, and a coolant descending channel and a second steam ascending channel are arranged between the inner wall and the outer wall. A heat pipe is arranged in the second steam rising channel, cooling working media are packaged in the heat pipe, the heat pipe is provided with a thick section, a transition section and a thin section from top to bottom, the pipe diameter of the thick section is larger than that of the thin section, and threads are arranged on the outer surface