| 摘要 |
<p>The present invention relates to an extremely low temperature refrigerant transfer coupling device for a superconductive rotary machine. In a refrigerant circulation pipeline between an extremely low temperature cooler and a superconductive rotary machine, a rotating part and a part not to be rotated are overlapped by multi-concentric barrier walls to be connected and are sealed with a magnetic fluid seal to prevent the leakage of a refrigerant and to obtain a sealing performance for a long time. The extremely low temperature refrigerant transfer coupling device for a superconductive rotary machine comprises an extremely low temperature cooler-side discharge pipe connected to the extremely low temperature cooler to discharge the cooled refrigerant; a rotor-side supply pipe connected to a rotor to rotate with the rotor, and in which the extremely low temperature cooler-side discharge pipe is inserted to transfer the received refrigerant to the rotor; an extremely low temperature cooler-side multi-concentric barrier wall formed in the outer end of the extremely low temperature cooler-side discharge pipe; and a rotor-side multi-concentric barrier wall formed in the outer end of the rotor-side supply pipe and inserted in the extremely low temperature cooler-side multi-concentric barrier wall to seal the refrigerant.</p> |
