Positioned, a cold shrink compensating superconducting electric motor

The present invention relates to a cold shrink compensating positioning superconducting electric motor comprising a rotor, torque tube, connecting bolts and the cryocontainer; low end of the torque tube fixedly connected to the cryocontainer via bolts; cryocontainer with a plane terminal connected to the low temperature torque tube an annular rabbet groove, low torque tube mouth end stop in the annular groove; the outer diameter of the annular groove of the spigot end of the torque tube outer diameter of the low temperature at the same room temperature, to ensure the torque tube coaxially cryocontainer at room temperature degrees; at normal temperature, the inner diameter of the annular groove is smaller than the inner diameter of the spigot end of the torque tube low temperature, the difference between the value of the gap between the two inner sides of the inner side surface of the torque tube temperature end of the annular groove spigot, for the gap cryocontainer avoid stress generated at a low temperature and work to ensure concentricity with the torque tube cryogen vessel at a low temperature. Advantage of the present invention are: good positioning effect, safety, simple structure, and can satisfy other requirements of concentricity installation and operation.