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 (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 termination structure of a cryogenic cable has a cryogenic-cable end portion (1) and a current-lead end portion (10) that are coupled to each other with a flexible conductor (5). Accordingly, any displacement in three-dimensional directions of the end portions that could occur due to thermal expansion and thermal contraction of the cryogenic cable and the current lead can be absorbed, and a sufficient current capacity can be ensured.
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.
摘要:
The present invention provides a terminal structure of a superconducting cable (100) including a cable core (102) having a superconducting shield layer (203) and an electrical insulation layer (202). The superconducting shield layer (203) has a radially outer portion provided with by a connection electrode (1) and the superconducting shield layer (203) and the connection electrode (1) are connected together with a low melting solder (5). The connection electrode (1) has a ground wire (3) connected thereto to ground the superconducting shield layer (203). For a multiphase cable including a plurality of cable cores (102), connection electrodes (1) are linked by a conductive coupling member (2) to short circuit superconducting shield layers (203). The superconducting shield layer (203) can be grounded without impaired insulating property of the electrical insulation layer.