A fiber-embedded superconducting tape and its preparation method

Abstract

The invention provides a fiber-embedded superconducting tape and a preparation method thereof. The fiber-embedded superconducting tape includes an upper protective metal tape, a lower protective metal tape, a bare superconducting tape and a measuring optical fiber. The upper The surface of the protective metal strip and / or the lower protective metal strip is engraved with one or more deep grooves along the length direction of the strip, and the measuring optical fiber is embedded in the deep groove. The depth of the deep groove is less than the thickness of the protective metal strip and greater than The diameter of the optical fiber, the superconducting bare strip is packaged between the upper protective metal strip and the lower protective metal strip through high-temperature solder; during preparation, it also includes embedding the measurement optical fiber in the deep groove, and connecting the measurement optical fiber with the low-temperature solder The step in which superconducting tapes are encapsulated together. The invention realizes the measurement of the temperature distribution of the superconducting strip, and at the same time, the structure of the superconducting strip is not affected, and the measuring optical fiber can be replaced, which significantly improves the reutilization rate of the superconducting strip and the finished product of the embedded optical fiber superconducting strip Rate.

Description

technical field [0001] The invention relates to a fiber-embedded superconducting tape and a preparation method thereof, belonging to the field of superconducting tapes and manufacturing. Background technique [0002] Thanks to the characteristics of nearly zero-resistance power transmission at a specific temperature, the high-temperature superconducting tape is significantly superior to ordinary conductors in terms of current-carrying capacity, and the coils wound from it can generate more electricity than conventional magnets of the same volume. Therefore, it has great research value and application prospects in the fields of electric motors, engines, transformers, superconducting energy storage, magnets, power cables, etc. [0003] However, when the superconducting strip is subjected to a current exceeding its specified critical value or its ambient temperature is higher than the critical temperature, the superconducting strip will undergo a phase transition process from a...

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Problems solved by technology

On the other hand, in this structure, the optical fiber and the superconducting tape are packaged synchronously with solder. Therefore, when the optical fiber breaks, engineers and technicians will not be able to replace the original broken measuring optical fiber with a new measuring optical fiber. The replaceability and universality of superconducting tapes with inner-enclosed optical fibers are greatly restricted

[0012] At present, no description or report of similar technology of the present invention has been found, and no similar data at home and abroad have been collected yet.

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