TERMINAL CONNECTION PART FOR CRYOGENIC CABLE

PROBLEM TO BE SOLVED: To provide a reliable terminal connection part for a cryogenic cable, which is capable of securing a preferable electric characteristic by enabling absorption of a difference between a thermal contraction amount of a former and that of a superconductive conductor layer at the time of cooling.SOLUTION: A terminal connection part for a cryogenic cable comprises: a conductor connection part that is electrically connected to a former and a superconductive conductor layer of the cryogenic cable; and a conductor extraction part that is electrically connected to the conductor connection part and extracts current flowing in the former or the superconductive conductor layer to the outside. The conductor connection part includes: a first conductor connection terminal connected to the conductor extraction part; a second conductor connection terminal connected to the former; and a third conductor connection terminal connected to the superconductive conductor layer. Each of the second conductor connection terminal and the third conductor connection terminal is electrically connected to the first conductor connection terminal through a spring-shaped contact piece, and is movable in the lengthwise direction of the cryogenic cable inside the first conductor connection terminal.SELECTED DRAWING: Figure 2 【課題】冷却時におけるフォーマと超電導導体層の熱収縮量の差を吸収でき、良好な電気特性を確保できる信頼性の高い極低温ケーブルの終端接続部を提供する。【解決手段】極低温ケーブルの終端接続部は、極低温ケーブルのフォーマ及び超電導導体層に電気的に接続される導体接続部と、導体接続部に電気的に接続され、フォーマ又は超電導導体層に流れる電流を外部に引き出す導体引出部と、を備える。導体接続部は、導体引出部に接続される第１の導体接続端子と、フォーマに接続される第２の導体接続端子と、超電導導体層に接続される第３の導体接続端子と、を有する。第２の導体接続端子及び第３の導体接続端子のそれぞれが、ばね状接触子を介して第１の導体接続端子に電気的に接続されるとともに、第１の導体接続端子内において極低温ケーブルの長さ方向に移動可能となっている。【選択図】図２