A welding device and method for superconducting joints inside nbti/cu superconducting coils

Abstract

The invention discloses a welding device applied to an internal superconductive connector in NbTi / Cu superconductive coil and method thereof. The device comprises a temperature control unit, a welding main platen, a welding size pressing unit and a thermal insulation unit, wherein the temperature control unit comprises a heating rod, a temperature sensor and a temperature control instrument; a power is connected with the heating rod and the temperature sensor through the temperature control instrument, the heating rod is distributed on the welding main platen, the temperature sensor is distributed at the position adjacent to a welding face of the welding main platen, the welding main platen is in a shape like a Chinese character Tu, superconductive wire connectors are tightly pressed on the welding main bench board through the welding size pressing unit, the welding size pressing unit is composed of two sets of pressing strips, the two sets of the pressing strips are both fixed to the upper end and the lateral side of the welding main bench board through screws, and the superconductive wire connectors are arranged at the corners of the pressing strips and the welding main platen. According to the device disclosed by the invention, the internal connector of the coil can be welded through the adjustable welding device, and the connector size can meet a requirement.

Description

technical field [0001] The invention belongs to the technical field of superconducting applications, and relates to a welding device and method for superconducting joints used in the coil winding process of NbTi / Cu superconducting magnets, and is especially suitable for welding space limited, between superconducting wires or between superconducting wires and superconducting wires. Welding with strict size requirements between conventional conductors. Background technique [0002] In the winding process of superconducting magnet coils, since the length of the superconducting wire cannot be infinitely long, or it can be customized segment by segment due to actual engineering requirements, these require the connection to solve the length problem. Therefore, the connection technology of the superconducting wire has become A key technology in practical application. At present, the soldering of superconducting joints is generally carried out by soldering, but the heating temperat...

AI Technical Summary

Problems solved by technology

At present, the soldering of superconducting joints is generally carried out by soldering, but the heating temperature of ordinary commercial electric soldering irons is uneven and difficult to control, and the size of the joints is also difficult to grasp. The cooling of the joints after welding can only be done by natural cooling. The quality depends on the proficiency of the operator, and the size and resistance of the joints cannot be well guaranteed, which brings serious challenges to the winding of superconducting coils and the final operation safety of the coils

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