US 4,726,199 A · Superconducting apparatus

Abstract

Disclosed is a superconducting apparatus comprising a superconducting coil and a cooling apparatus for cooling this superconducting coil. The cooling apparatus is constituted by a cooling medium circulating path for subjecting a cooling medium to a vaporization/liquefication cycle, and a temperature equalizing plate for effecting a uniform cooling of the superconducting coil by the cooling medium. The cooling medium circulating path is constituted by a pair of flowing-down parts through which a liquid cooling medium flows downwards by gravity, and a pair of vaporization parts through which the liquid cooling medium flows upwards while it is being vaporized. The temperature-equalizing plate covers the peripheral surface making one entire round of the superconducting coil around the axis of the coil. It is divided into at least two parts at its lower end, which are electrically insulated from each other.

Claims23

Dependent claims

A superconducting apparatus comprising a superconducting coil and a cooling apparatus for cooling said superconducting coil, said cooling apparatus being constituted by a cooling medium circulating path for subjecting a cooling medium to a vaporization/liquefication cycle, and a temperature equalizing plate for effecting a uniform cooling of said superconducting coil by said cooling medium, said cooling medium circulating path being constituted by a pair of flowing-down parts through which a liquid cooling medium flows downwards by gravity, and a pair of vaporization parts through which said liquid cooling medium flows upwards while it is being vaporized, said temperature-equalizing plate covering the peripheral surface making one entire round of said superconducting coil around the axis of said superconducting coil and being divided into at least two parts, said at least two parts being electrically insulated from each other.

A superconducting apparatus comprising:

(a) an annular superconducting coil having a longitudinal axis which, during use of said super conducting apparatus, is at least approximately horizontal;
(b) an annular temperature equalizing plate surrounding said annular superconducting coil;
(c) a tank which, during use of said superconducting apparatus, contains a liquid cooling medium disposed above said annular temperature equalizing plate;
(d) a first path of fluid communication having an inlet in fluid communication with said tank and an outlet beneath said annular temperature equalizing plate, said first path of fluid communication being thermally insulated from said annular temperature equalizing plate;
and
(e) a second path of fluid communication having an inlet in fluid communication with the outlet of said first path of fluid communication and at least one outlet in fluid communication with said tank, said second path of fluid communication being in thermal contact with said annular temperature equalizing plate on both circumferential sides of said annular temperature equalizing plate,
whereby, during use of said superconducting apparatus, a liquid cooling medium stored in said tank flows downwardly through said first path of fluid communication under the force of gravity, after which it flows upwardly through said second path of fluid communication while being vaporized, thereby effecting a uniform cooling of said annular superconducting coil.

4 more elements

Dependencies are inferred from the claim text.

Superconducting apparatus

Life of this patent

Superconducting apparatus

Life of this patent

Abstract

Claims23