摘要:
A superconducting cable joint structure (55) is a structure used to joint together superconducting cables (100) used at cryogenic temperature or to joint together a terminal of the superconducting cable (100) and a normal conducting cable, and it includes a joint insulation layer (40) arranged radially outer than a portion (22) connecting the superconducting cables' respective conductors (11) together or the superconducting cable's conductor (11) and the normal conducting cable's conductor together, and a superconducting wire (41) provided on a radially outer surface of a conductor connection sleeve (19) or buried internal to the conductor connection sleeve. The cable cores can have their connection prevented from generating heat to have an increased temperature.
摘要:
A baking method for heating an object (an inner pipe 1, an outer pipe 2) having a vacuum layer formed therein to remove gas molecules occluded in the object, wherein the object itself is made to be a heat production element for heating. By making the baking object a heat production element, the object can be heated directly and the heating can be energy-efficient. Moreover, additional heating means such as a heater or gas is unnecessary, which enables simplification of a configuration of a baking device. Therefore, a baking method is obtained which enables energy-efficient heating and, in particular, uniform heating of a long or large object.
摘要:
A first flange (11) and a second flange (12a) are superposed and fastened with a bolt (B) and a nut (N) in a fastening operation, to implement a fastening structure used at temperature lower than atmospheric temperature for the fastening operation. Assuming that the first flange (11) has a thickness L1 and a coefficient of linear expansion α1, the second flange (12a) has a thickness L2 and a coefficient of linear expansion α2, superposed first flange (11) and second flange (12a) have a thickness L, and the bolt (B) has a coefficient of linear expansion α, a relation of L·α ≥ L1·α1 + L2·α2 is satisfied, i.e. heat shrinkage of the bolt (B) is not smaller than the total heat shrinkage of the first and second flanges (11, 12a). Thus, impairment of sealing property due to heat shrinkage is avoided at a flange junction used at low temperature.
摘要:
A superconducting cable joint structure (55) is a structure used to joint together superconducting cables (100) used at cryogenic temperature or to joint together a terminal of the superconducting cable (100) and a normal conducting cable, and it includes a joint insulation layer (40) arranged radially outer than a portion (22) connecting the superconducting cables' respective conductors (11) together or the superconducting cable's conductor (11) and the normal conducting cable's conductor together, and a superconducting wire (41) provided on a radially outer surface of a conductor connection sleeve (19) or buried internal to the conductor connection sleeve. The cable cores can have their connection prevented from generating heat to have an increased temperature.
摘要:
A baking method for heating an object (an inner pipe 1, an outer pipe 2) having a vacuum layer formed therein to remove gas molecules occluded in the object, wherein the object itself is made to be a heat production element for heating. By making the baking object a heat production element, the object can be heated directly and the heating can be energy-efficient. Moreover, additional heating means such as a heater or gas is unnecessary, which enables simplification of a configuration of a baking device. Therefore, a baking method is obtained which enables energy-efficient heating and, in particular, uniform heating of a long or large object.
摘要:
A superconducting cable joint structure (52, 54) is a structure used to joint together superconducting cables (100) used at cryogenic temperature or to joint together a terminal of the superconducting cable (100) and a normal conducting cable (33), and it includes a joint insulation layer (20) arranged radially outer than a portion (22) connecting the superconducting cables' respective conductors (11) together or the superconducting cable's conductor (11) and the normal conducting cable's conductor (31) together, and at least one coolant path (S) provided at the joint insulation layer (20) to cool the portion connecting the conductors together. The cable cores can have their connection prevented from generating heat to have an increased temperature.
摘要:
A multiphase superconducting cable connection structure includes a connection box (1) accommodating three conductor connects connecting a superconductor (201) of a cable core (102) of each phase extracted from a pair of 3-phase superconducting cables (100), a solid insulation member (2) fixed to an outer circumference of each conductor connect, and a metal flange fixing the solid insulation member (2) to the connection box (1). By fixing the metal flange (3) to the connection box (1) (a refrigerant vessel (11)), the conductor connect can be positioned and the conductor connector's movement caused as the cable core (102) thermally contracts can be reduced. The structure can help to position the conductor connect in the connection box and reliably hold it at a prescribed position.