The application belongs to the technical field of
carbon dioxide energy storage systems, and particularly relates to a magnetic
coupling type stirring module, a heat
storage tank comprising the module, and a
carbon dioxide energy storage system. The structure of the stirring module comprises a center
pipe body which is sleeved and arranged on a maintenance platform support column and located in the inside of a tank body, a radial connecting rod which is arranged on the outer ring surface of the center
pipe body and used for rotating and stirring heat storage medium, a permanent
magnet ring body unit which is arranged on the radial connecting rod, located in the inside of the tank body, and used for receiving the driving force of a magnetic
coupling driving module, and a plurality of periodic pushing guide plate units which are screwedly arranged on the radial connecting rod and used for improving the heat
cycle efficiency of the heat storage medium in the mode of rotating and pushing the heat storage medium at the outlet position of a high-temperature medium
discharge pipe and the inlet position of a low-temperature medium inlet pipe respectively.