| 发明名称 | Connection structure for superconducting cables | ||
| 摘要 | A connection structure for superconducting cables includes: superconducting cables that are connected to each other and include cable cores containing formers and superconducting conductor layers, and each cable core is housed in a thermal insulation tube with a cooling medium, wherein the cable cores include electric insulating layers obtained by winding insulating sheets around the superconducting conductor layers, the electric insulating layers on both sides of a conductor connecting part, in which the formers and the superconducting conductor layers are connected to each other, include taper shape portions each having a diameter reducing towards the conductor connecting part, each taper shape portion is formed so as to have an inclination angle changing in a stepwise fashion by a plurality of tapered portions among which a tapered portion nearer the conductor connecting part has smaller inclination angle, and a reinforcing insulating layer is provided between the taper shape portions. | ||
| 申请公布号 | US9123455(B2) | 申请公布日期 | 2015.09.01 |
| 申请号 | US201314236605 | 申请日期 | 2013.04.15 |
| 申请人 | FURUKAWA ELECTRIC CO., LTD. | 发明人 | Yagi Masashi;Nomura Tomoya;Hirata Hirao;Mitsuhashi Takaharu |
| 分类号 | H01L39/00;H01B12/02;H01R4/68;H01B7/02;H02G15/34;H01L39/02 | 主分类号 | H01L39/00 |
| 代理机构 | Amin, Turocy & Watson, LLP | 代理人 | Amin, Turocy & Watson, LLP |
| 主权项 | 1. A connection structure for superconducting cables comprising: superconducting cables that are connected to each other and include cable cores containing formers and superconducting conductor layers, respectively, and each of the cable cores is housed in a thermal insulation tube with a cooling medium, wherein the cable cores include electric insulating layers obtained by winding insulating sheets around the superconducting conductor layers, respectively, the electric insulating layers on both sides of a conductor connecting part, in which the formers and the superconducting conductor layers are connected to each other, include taper shape portions each having a diameter reducing towards the conductor connecting part, each of the taper shape portions is formed so as to have an inclination angle changing in a stepwise fashion by a plurality of tapered portions among which a tapered portion nearer the conductor connecting part has smaller inclination angle, and a reinforcing insulating layer is provided between the taper shape portions, wherein when a tapered portion nearest the conductor connecting part among the tapered portions of the taper shape portion is defined as a first one, inclination angles α1 to αn of the tapered portions from first one to nth one fulfill a condition of the following formula,[Formula8][FIRSTSTEP]A·sinα1y<1(r≦y<Y1),y=r+x·tanα1(0≦x<X1)(7)[SECONDSTEP]A·sinα2y<1(Y1≦y<Y2),y=r+X1tanα1+(x-X1)tanα2(X1≦x<X2)(8)[THIRDSTEP]A·sinα3y<1(Y2≦y<Y3),y=r+X1tanα1+(X2-X1)tanα2+(x-X2)tanα3(X2≦x<X3)⋮(9)[NthSTEP]A·sinα1y<1(Yn-1≦y<Yn),y=r+∑K=1n-1(XK-XK-1)tanαK+(x-Xn-1)tanαn(Xn-1≦x<Xn)(10)WHEREA·sinα1y=1(11)θ=tan-1[(R-r)·gxV·ln(Rjr)ln(Rr)](12) wherein R is a radius of an outer periphery of the electric insulating layer, r is a radius of an outer periphery of the superconducting conductor layer, Rj is a radius of the outer periphery of the reinforcing insulating layer, θ is an inclination angle obtained from target withstand voltage V of the superconducting conductor layer, destruction strength gx of a taper surface in the stratabound-direction, and values of above R, Rj and r when assuming that the taper shape portion is made of a single tapered portion, x is a variable indicating a position on a line along a cable longitudinal direction with a tip portion of the taper shape portion as an origin, y is a variable indicating a position on a line towards outside in a radius direction with a cable centerline as an origin, and X1 to n and Y1 to n are positional coordinates of maximum diameters of the tapered portions from the first one to nth one on a plane with x-y coordinate system. | ||
| 地址 | Tokyo JP | ||