The invention discloses a
helium microcirculation refrigeration Dewar
system for superconducting magnets, which belongs to the technical field of cooling devices for superconducting magnets, and comprises: a Dewar with a concave heat conduction cavity on the outer surface of the Dewar; a
coupling head , the
coupling head extends into the heat conduction chamber, and one end of the
coupling head is connected to the inner bottom wall of the heat conduction chamber; the superconducting coil is arranged in the Dewar; the
helium microcirculation circuit is arranged in the Dewar, and the
helium microcirculation circuit includes the condensation chamber and A plurality of heat exchange pipes, the condensation chamber is connected with the outer bottom wall of the heat conduction chamber, one end of the heat exchange
pipe is connected with the condensation chamber, the other end of the heat exchange
pipe is closed and connected with the superconducting coil, the heat exchange
pipe and the condensation chamber are filled with
Helium: the heat conduction chamber of the present invention is only connected to the
atmosphere, not to the interior of the Dewar, so that a helium-enclosed operating volume space can be better constructed, and the helium is no longer subject to the
diffusion and
thermal shock of the
atmosphere, and no freezing will occur phenomenon, ensuring
heat transfer efficiency and avoiding failure of superconducting magnets.