COOLING MEDIUM SUPPLY/DISCHARGE DEVICE AND SUPERCONDUCTING ROTARY MACHINE INCLUDING COOLING MEDIUM SUPPLY/DISCHARGE DEVICE

摘要

A cooling medium supply/discharge device includes a cylindrical rotary casing which is rotatable with a rotary shaft of the rotor; a cylindrical stationary casing fixed such that the stationary casing extends inward relative to the rotary casing and coaxially with the rotary casing, the stationary and rotary casings being relatively rotatable; a first stationary cylindrical body which is inserted into the stationary casing such that the first stationary cylindrical body is not rotatable; a first rotary cylindrical body which is inserted into the first stationary cylindrical body with a gap such that the first rotary cylindrical body is rotatable together with the rotary shaft; a second stationary cylindrical body which is inserted into the first stationary cylindrical body such that the second stationary cylindrical body is not rotatable; and a second rotary cylindrical body which is inserted into the first rotary cylindrical body and rotatable together with the rotary shaft.

主权项

1. A cooling medium supply/discharge device of a superconducting rotary device, the cooling medium supply/discharge device being placed between a refrigerating device and a rotor including a superconducting coil in the superconducting rotary device, to supply a gaseous supply cooling medium which is supplied from the refrigerating device to the rotor and return a gaseous return cooling medium returned from the rotor to the refrigerating device, the cooling medium supply/discharge device comprising:
a cylindrical rotary casing which is rotatable together with a rotary shaft of the rotor; a cylindrical stationary casing fixed such that the stationary casing extends inward relative to the rotary casing and coaxially with the rotary casing and relative rotation between the stationary casing and the rotary casing via a bearing is allowed to occur; a first stationary cylindrical body which is inserted into the stationary casing such that the first stationary cylindrical body is not rotatable; a first rotary cylindrical body which is inserted into the first stationary cylindrical body with a gap such that the first rotary cylindrical body is rotatable together with the rotary shaft; a second stationary cylindrical body which is inserted into the first stationary cylindrical body such that the second stationary cylindrical body is not rotatable; and a second rotary cylindrical body which is inserted into the first rotary cylindrical body, fitted to the second stationary cylindrical body with a gap, and rotatable together with the rotary shaft, wherein a flow passage of the gaseous supply cooling medium is provided inside the second stationary cylindrical body and the second rotary cylindrical body, and wherein a flow passage of the gaseous return cooling medium is provided between the first stationary cylindrical body and the second stationary cylindrical body, and between the first rotary cylindrical body and the second rotary cylindrical body.