Title:
TERMINAL STRUCTURE OF SUPERCONDUCTING CABLE
Document Type and Number:
Japanese Patent JP2020028134
Kind Code:
A
Abstract:
To provide a terminal structure of a superconducting cable capable of shortening length of a porcelain tube body while capable of effectively relaxing the electric field of an insulation part of a bushing.SOLUTION: A terminal structure of a superconducting cable comprises a cable core, a bushing inserted into the cable core, a porcelain tube accommodating a normal temperature side area of the bushing, a conductor extraction part connected with an end of the cable core, and an inner vacuum insulation pipe provided so as to extend to the normal temperature side through the porcelain tube. The bushing has an insulation part and a stationary part formed at the circumference of the insulation part. The porcelain tube has a body part with an electric field control surface, a lower metal fitting attached to the stationary part of the bushing, and an upper metal fitting inserting-fixing a normal temperature side end of the inner vacuum insulation pipe. The normal temperature side end of the inner vacuum insulation pipe has a step part. While the insulation part of the normal temperature side area of the bushing is arranged so as to be overlapped with the electric field control surface of the body part of the porcelain tube in a radial direction, The step part of the inner vacuum insulation pipe is positioned nearer than the electric field control surface to the normal temperature side.SELECTED DRAWING: Figure 2
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Inventors:
ASHIBE YUICHI
MIMURA TOMOO
TANAZAWA MASAYUKI
YAMAGUCHI HIROSHI
MIMURA TOMOO
TANAZAWA MASAYUKI
YAMAGUCHI HIROSHI
Application Number:
JP2018149961A
Publication Date:
February 20, 2020
Filing Date:
August 09, 2018
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
TOKYO ELECTRIC POWER CO HOLDINGS INC
TOKYO ELECTRIC POWER CO HOLDINGS INC
International Classes:
H02G15/34; H01B12/02; H01L39/04
Attorney, Agent or Firm:
Hiroshi Yamano
Hiroshi Sakamoto
Hiroshi Sakamoto