Sumitomo Electric Industries, Limited

The Tokyo Electric Power Company, Incorporated

Chizuru Suzawa

Takato Masuda

Kengo Ohkura

Shoichi Honjo

Yoshihisa Takahashi

Masato Shimodate

Yoshibumi Sato

Toshiyuki Uchiyama

The present invention provides a circulation cooling system of a cryogenic cable in which a reserver unit can be made smaller and a conventional adjustment mechanism or adjustment task of the amount of a refrigerant within a reserver unit is not necessary. The circulation cooling system of a cryogenic cable according to the present invention has a reserver unit storing a refrigerant and a cable cooling portion cooling down a cable by the refrigerant sent from the reserver unit and the refrigerant sent from the cable cooling portion is returned to the reserver unit again for circulation. The system is characterized in that it has a refrigerant temperature adjustment mechanism to keep constant the amount of the refrigerant within the reserver unit.

Circulation cooling system of cryogenic cable

To provide a cooling method of a superconducting cable line wherein moistures contained in the cable in the superconducting cable line after laid is removed before cooling, so that solidification of the moistures can be prevented from clogging of piping including a coolant flow channel and a return pipe. There is provided an inert gas generating vessel so that before the coolant is flown into the superconducting cable line, the inert gas is blown into the cable line from an inflow pipeconnected with a supply pipe' and is discharged from a discharge pipetogether with the gas. The inert gas is preheated by a heaterbefore feeding it into the cable line. The discharge pipeconnected with a discharge side B of the return pipeis provided with a moisture measuring instrumentto measure a moisture content of the discharged gas.

Cooling method of superconducting cable line

A current-carrying lead that may be connected between a source of current and a superconducting device and which comprises a ceramic superconductor and a support made of an insulator, a nonmagnetic metal or a good electrical conductor. The lead may be contructed to conduct currents having a single or dual polarities.

Current-carrying lead formed of a ceramic superconductive material

Growing community of inventors

Osaka, Japan

Chizuru Suzawa