CN105408969B - Superconductive current lead - Google Patents
Superconductive current lead Download PDFInfo
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- CN105408969B CN105408969B CN201480042321.6A CN201480042321A CN105408969B CN 105408969 B CN105408969 B CN 105408969B CN 201480042321 A CN201480042321 A CN 201480042321A CN 105408969 B CN105408969 B CN 105408969B
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- superconducting wire
- superconducting
- electrode
- current lead
- superconductive current
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- 239000002887 superconductor Substances 0.000 description 13
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- 229910001256 stainless steel alloy Inorganic materials 0.000 description 5
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- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
- H01F6/065—Feed-through bushings, terminals and joints
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/68—Connections to or between superconductive connectors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The superconductive current lead of the present invention possesses：The superconducting wire of banding, it by stacking gradually intermediate layer on metallic substrates, superconducting layer, stabilizing layer form；Metal electrode, it is engaged in the both ends of superconducting wire；And reinforced member, it positions in a manner of with defined electrode spacing and houses lead main body, and the lead main body includes the superconducting wire and the metal electrode.Superconducting wire has flexure between metal electrode.
Description
Technical field
The present invention relates to the superconductive current lead for having used oxide superconducting wire rod, especially, be related to superconducting wire and
Metal electrode is contained in the superconductive current lead formed in reinforced member.
Background technology
In recent years, in hyperconductive cable or superconducting magnet etc. make use of the field of superconductor applications equipment of superconductivity,
Energetically carry out towards practical research and development.In general, superconductor applications equipment is arranged at low temperature portion (low temperature appearance
Device), it is connected by current feed with being arranged at the external equipment (such as power supply) in normal temperature portion.
Due to carrying out the operating of superconductor applications equipment under the low temperature environment of pole, therefore the thermal insulation in low temperature portion becomes extremely to weigh
Will.Because if the thermal insulation in low temperature portion is poor, the heat intrusion to low temperature portion is larger, then the cooling effect of superconductor applications equipment
Rate reduces and, for maintaining the cooling cost of superconducting state to increase, to cause that superconductor applications can not be operated in some cases
Equipment.The approach invaded as this to the heat in low temperature portion, it may be considered that draw by the approach of low-temperature (low temperature) vessel heat transfer and by electric current
The approach of line heat transfer.
As the method for preventing the heat by low-temperature (low temperature) vessel from invading, it is known to have pair of refrigerant groove and vacuum tank
The low-temperature (low temperature) vessel of weight structure, the refrigerant groove accommodate the refrigerants such as liquid nitrogen and superconductor applications equipment, and the vacuum tank is arranged at system
The outside of cryogen groove.According to the low-temperature (low temperature) vessel, invaded by vacuum heat-insulation come the heat reduced to low temperature portion.
As the method for preventing the heat by current feed from invading, it is proposed that use superconducting for oxide superconductor
Flow lead.Resistance is zero when oxide superconductor is below liquid nitrogen temperature, and pyroconductivity is smaller (1/the tens of copper).Cause
This, does not produce Joule heat, the heat output to low temperature portion is also minimum in superconductive current lead, during energization.Therefore by superconducting
Lead is flowed, reduces and is invaded to the heat in low temperature portion.
In general, superconductive current lead possesses the superconducting wire of banding, is configured at the one end (high temperature of superconducting wire
Side) the first metal electrode and be configured at superconducting wire the other end (low temperature side) the second metal electrode.Such as pass through
Welding engages superconducting wire with the first metal electrode and the second metal electrode.
For the lead main body being made up of superconducting wire, the first metal electrode and the second metal electrode, be located in
In the state of in reinforced member it is accommodated and supported (such as patent document 1).Reinforced member by low heat conductivity material
(such as fibre reinforced plastics (GFRP：Glass Fiber Reinforced Plastics), stainless steel alloy, nickel-base alloy,
Titanium alloy etc.) form.So, in the case where lead main body is contained in reinforced member, typically superconducting wire is remained
Linearly.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 07-297025 publications
The content of the invention
Problems to be solved by the invention
But if using above-mentioned superconductive current lead under the low temperature environment of pole, because each component parts carries out heat
Shrink and produce following such undesirable situation.
For example, in the case where the percent thermal shrinkage of superconducting wire is bigger than the percent thermal shrinkage of reinforced member, due to superconducting wire
Significantly shrink, it is thus possible to excessive load is produced to the junction surface (welding portion) between superconducting wire and metal electrode, and
It is damaged to.Moreover, resistance is connected if junction surface is damaged becomes big, therefore, it is difficult to flow through high current.
On the other hand, in the case where the percent thermal shrinkage of superconducting wire is smaller than the percent thermal shrinkage of reinforced member, only in superconduction
Wire rod produces flexure, at first sight it is believed that the junction surface between superconducting wire and metal electrode does not produce excessive load.
But the pyroconductivity due to superconducting wire is different from the pyroconductivity of reinforced member, therefore the carry out degree cooled down is also different.
That is, the carry out of the cooling of the higher superconducting wire of pyroconductivity is very fast, and the amount of contraction for cooling down initial stage, superconducting wire is than strengthening
Part is big.So as to which the junction surface between superconducting wire and metal electrode still produces excessive load.Especially, in general
Oxide superconducting wire rod due to the stabilizing layer being made up of pyroconductivity higher Ag or Cu, therefore so the problem of show
Write.
Make superconducting wire and metal electrode it is an object of the present invention to provide the thermal contraction that can be prevented during due to cooling
Between junction surface damage, superconductive current lead that reliability is higher.
Solution to problem
The present invention superconductive current lead be characterised by, including：
The superconducting wire of banding, its by metallic substrates by intermediate layer, superconducting layer, stabilizing layer be laminated in order and
Into；
Metal electrode, it is engaged in the both ends of the superconducting wire；And
Reinforced member, it positions in a manner of with defined electrode spacing and houses lead main body, the lead main body
Comprising the superconducting wire and the metal electrode,
Electrode spacing as defined in described is shorter than the exposed length of the superconducting wire,
The superconducting wire is in the state of the lead main body is housed in the reinforced member, in a thickness direction
Flexure.
Invention effect
According to the present invention, the thermal contraction that superconducting wire is resulted from cooling is inhaled using the flexure for being formed at superconducting wire
Receive, therefore junction surface that will not be between superconducting wire and metal electrode produces excessive load, it is ensured that higher reliability.
Brief description of the drawings
Fig. 1 is the figure for representing to have used the superconducting magnet apparatus of the superconductive current lead of an embodiment of the present invention.
Fig. 2 is the outside drawing of the superconductor line of embodiment.
Fig. 3 is the figure for the general structure for representing superconducting wire.
Fig. 4 is the top view of the superconductive current lead from Z-direction front.
Fig. 5 is VI-VI in Fig. 6 to pseudosection.
Fig. 6 is the front view of the superconductive current lead from Y-direction base end side.
Fig. 7 is IV-IV in Fig. 4 to pseudosection.
In Fig. 8, Fig. 8 A are the figures for the exposed length (being contained in the state before reinforced member) for representing superconducting wire, Fig. 8 B
It is the figure for representing to be formed at the flexure (being contained in the state after reinforced member) of superconducting wire.
Symbol description
1 superconducting magnet apparatus
10 superconductive current leads
11 superconducting wires
111 metal substrates
112 intermediate layers
113 superconducting layers
114 stabilizing layers
12 first electrodes (metal electrode)
13 second electrodes (metal electrode)
14 reinforced members
15 normal conduction current feeds
20 superconducting coils
30 power supplys
40 low-temperature (low temperature) vessels
Embodiment
Below, embodiments of the present invention are described in detail based on accompanying drawing.
Fig. 1 is the figure for representing to have used the superconducting magnet apparatus 1 of the superconductive current lead 10 of an embodiment of the present invention.Figure
2 be the outside drawing of superconductor line 10.Fig. 3 is the figure for the general structure for representing superconducting wire 11.Fig. 4 is seen from Z-direction front
Examine the top view of superconductive current lead.Fig. 5 is VI-VI in Fig. 6 to pseudosection.Fig. 6 is the superconduction from Y-direction base end side
The front view of current feed.Fig. 7 is IV-IV in Fig. 4 to pseudosection.
As shown in figure 1, superconducting magnet apparatus 1 possesses superconductive current lead 10, normal conduction current feed 15, superconducting coil
20th, power supply 30 and low-temperature (low temperature) vessel 40 etc..
Low-temperature (low temperature) vessel 40 has the dual structure being made up of the container 41 of inner side and the vacuum tank 42 in outside.Container 41 with it is cold
Jelly machine (diagram is omited) connection, such as make the internal extremely low temperature (such as 77K) of holding using liquid helium.Vacuum tank 42 and vavuum pump (diagram
Slightly) connection, make internal holding vacuum state.
Superconducting coil 20 is the coil for being entwined superconducting wire.Superconducting coil 20 is configured at the container as low temperature portion
In 41.Superconducting coil 20 has the coil electrode 21 for being used for being connected with superconductive current lead 10.
Power supply 30 is configured at outside the low-temperature (low temperature) vessel 40 as normal temperature portion.Power supply 30 by normal conduction current feed 15 and
Superconductive current lead 10 supplies electric current to superconducting coil 20.Normal conduction current feed 15 is, for example, copper cash.
Superconductive current lead 10 has superconducting wire 11, first electrode 12, second electrode 13 and reinforced member 14.Superconduction
Current feed 10 is configured in container 41.The one end as high temperature side of superconducting wire 11 is connected with first electrode 12, as
The other end of low temperature side is connected with second electrode 13.
In the present embodiment, the superconductive current lead 10 using a superconducting wire 11 is illustrated, but it is of the invention
Embodiment 2 that can be as be described hereinafter is such, suitable for the superconductive current lead with a plurality of superconducting wire 11.
As shown in figure 3, superconducting wire 11 is the banding wire rod for having superconducting layer 113.Superconducting wire 11 has for example in band
Lit-par-lit structure obtained from foring intermediate layer 112, superconducting layer 113, stabilizing layer 114 on the metal substrate 111 of shape in order.
Metal substrate 111 is with Ni alloys (such as Hastelloy (registration mark)), W-Mo classes, Fe-Cr classes (such as Ovshinsky
Body stainless steel) or Fe-Ni classes material for representative low magnetic No yield point metal substrate.
Intermediate layer 112 for prevent the element from metal substrate 111 for example with being diffused into up to superconducting layer 113
One intermediate layer (diffusion preventing layer) and the second intermediate layer for making the crystallization of superconducting layer 113 be upwardly oriented in certain side (take
To layer) etc. multiple intermediate layers.First intermediate layer is for example made up of zinc-gallium oxide layer (GZO) or yttria-stabilized zirconia layer (YSZ).
For the film in the first intermediate layer, such as ion-beam assisted deposition (IBAD can be applicable：Ion Beam Assisted
Deposition).Second intermediate layer is for example by cerium oxide layer (CeO2) form.For the film in the second intermediate layer, such as can
It is applicable radio frequency sputtering method.
Superconducting layer 113 is for example by RE type I superconductors Is (RE：Selected from Y, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb
One or more kinds of rare earth elements) etc. oxide superconductor form.As RE series superconducting materials, with YBa2Cu3O7Represent
Yttrium type I superconductors I is representative.For the film of superconducting layer 113, metalorgano deposition method (MOD can be applicable：Metal-organic
Deposition), pulsed laser deposition (PLD：Pulsed Laser Deposition), sputtering method or organometallic chemistry
Vapour deposition process (MOCVD：Metal Organic Chemical Vapor Deposition).
It is preferred that it is dispersed with superconducting layer 113 including at least a kind of, less than 50 μm of the oxidation in Y, Zr, Sn, Ti, Ce
Composition granule, as flux pinning point.In this case, the film-forming method as superconducting layer 113, trifluoro second has desirably been used
The TFA-MOD methods of hydrochlorate (TFA).For example, can by into the Ba solution comprising TFA mix with Ba compatibility it is high, contain
Zr naphthenate etc., to make to include Zr oxide particle (BaZrO3) be scattered in as flux pinning point by RE class superconductions
In the superconducting layer 113 that body is formed.In addition, the method for disperseing flux pinning point in superconducting layer 113, can be applicable known
Technology (such as Japanese Unexamined Patent Publication 2012-059468 publications).
By disperseing flux pinning point in superconducting layer 113, superconducting wire 11 is used in the state of bending,
It is not easy to superconducting characteristic affected by magnetic fields, and can playing stably.
Stabilizing layer 114 is to be used to protect superconducting layer 113, and generates resistance by local failure in superconducting state
Make the roundabout layer of electric current in the case of (normal conduction transfer).It is preferred that stabilizing layer 114 is relatively low by resistivity and pyroconductivity compared with
High material is formed, such as is made up of Ag or Cu.For the film of stabilizing layer 114, such as sputtering method can be applicable.
The percent thermal shrinkage of superconducting wire 11 depends on metal substrate 111.Hastelloy when being cooled to 77K from room temperature
Percent thermal shrinkage be 0.204%.In addition, the pyroconductivity of superconducting wire 11 depends on metal substrate 111 and stabilizing layer
114.The pyroconductivity of 77K Hastelloy is 5.164W/ (mK), and Ag pyroconductivity is 237.3W/ (mK).
First electrode 12 (high temperature lateral electrode) and second electrode 13 (low temperature lateral electrode) are by metal materials such as copper or copper alloys
Form.First electrode 12 is configured near the bottom surface of container 41, is drawn by conductor lead division (diagram is omited) with normal conduction electric current
Line 15 connects.Temperature near first electrode 12 is, for example, 77K.Second electrode 13 is configured near superconducting coil 20, with
The coil electrode 21 of superconducting coil 20 connects.Temperature near second electrode 13 is, for example, 4.2K.
The end face of the side on length direction (X-direction) has and is used to fix respectively for first electrode 12 and second electrode 13
Fixing groove 12a, 13a of superconducting wire 11.For width (Y-direction) both ends of fixing groove 12a, 13a, can both open,
It can also close.The height (Z-direction) of fixing groove 12a, 13a is set as larger than the thickness of superconducting wire 11.For solid
Determine groove 12a, 13a depth (X-direction), as long as being securely engaged with superconducting wire 11, connection resistance is sufficiently small and can prop up
The degree of support.
The end of one side of superconducting wire 11 is inserted into the fixing groove 12a of first electrode 12, until with fixing groove 12a
Bottom collide untill.The end of the opposing party of superconducting wire 11 is inserted into the fixing groove 13a of second electrode 13, until with
Untill fixing groove 13a bottom is collided.Between the scolding tin of fusing is filled between superconducting wire 11 and fixing groove 12a, 13a
Gap.That is, superconducting wire 11 is engaged and electrically connected with first electrode 12 and second electrode 13 by welding.
So, for superconductive current lead 10, due to by the way that superconducting wire 11 to be inserted into fixing groove 12a, 13a and connect
Close, therefore the assembling procedure of lead main body is extremely readily, to be also in addition in the miniaturization for realizing superconductive current lead 11
Useful.
The thermal conductivity ratio superconducting wire 11 of reinforced member 14 is low.Thereby, it is possible to reduce the hot intrusion volume from outside.
From the viewpoint of hot intrusion volume is reduced, GFRP is suitable.77K GFRP pyroconductivity is 0.39W/ (m
K), it is substantially smaller than the pyroconductivity of superconducting wire 11.In addition, 77K GFRP percent thermal shrinkage is 0.213%, compare superconducting wire
11 percent thermal shrinkage is big.
On the other hand, from the viewpoint of being protected when superconducting wire 11 is damaged to superconducting magnet apparatus 1, as side
Road and to play stainless steel alloy, nickel-base alloy, titanium alloy of function etc. be suitable.77K stainless steel alloy (SUS304,
SUS316 pyroconductivity) is 7.9W/ (mK), and the pyroconductivity than superconducting wire 11 is small.In addition, 77K stainless steel alloy
(SUS304) percent thermal shrinkage is 0.281, and the percent thermal shrinkage of specific heat conduction wire 11 is big.
Reinforced member 14 in a manner of as the defined electrode spacing spacing of second electrode 13 (first electrode 12 with),
Lead main body obtained from first electrode 12 and second electrode 13 are engaged in into the both ends of superconducting wire 11 is positioned
Under state, the lead main body is accommodated.Reinforced member 14 is hollow rectangular body component, has the receiving portion 142 that top surface is opening
And the cap 141 by closure of openings.After lead main body is contained in receiving portion 142, by the closure of openings of receiving portion 142
Cap 141 is bonded by mode.In addition, opening can also be formed locally in receiving portion 142 and cap 141.
Leaded main body is accommodated in receiving portion 142, and the lead main body is entered in a manner of as defined electrode spacing
Row positioning.Specifically, the location division (diagram is omited) for being positioned to lead main body is pre-set in reinforced member 14,
First electrode 12 and second electrode 13 are fixed on defined position using it.
In the present embodiment, after lead main body is contained in into reinforced member 14, superconducting wire 11 is in first electrode 12
There is flexure between electrode between second electrode 13.The flexure for being formed at superconducting wire 11 is as shown in Figure 8.
As shown in Figure 8 A, the exposed length Lsc of superconducting wire 11 is to remove fixing groove from the total length of superconducting wire 11
Length after 12a, 13a depth (length of X-direction).If between the electrode when the lead main body is contained in into reinforced member 14
It is shorter than the exposed length Lsc of superconducting wire 11 away from Le, then as shown in Figure 8 B, scratching for amount of deflection Δ D is formed in superconducting wire 11
It is bent.
For example, the respective depth of fixing groove 12a, 13a is being set into 25mm, the total length of superconducting wire 11 is set to
In the case of 151mm, the exposed length Lsc of superconducting wire 11 is 101mm.When the lead main body is contained in into reinforced member 14
Electrode spacing Le be 100mm in the case of, form the flexure of 1mm amount.
Here, it is preferred that deflection rate Δ D/Le is more than 0.5%.By the way that deflection rate Δ D/Le is set into more than 0.5%, and it is sharp
The caused thermal contraction on superconducting wire 11 when cooling is reliably absorbed with flexure, therefore can reliably prevent to superconducting wire
Bring excessive load in junction surface between 11 and first electrode 12 and second electrode 13.
In addition, from absorbing from the viewpoint of thermal contraction caused by superconducting wire 11, deflection rate Δ D/ is not particularly restricted
The Le upper limit.But be possible to be difficult to be contained in reinforced member 14 if flexure is excessive, or superconducting characteristic reduces.From such
Viewpoint considers that preferably deflection rate Δ D/Le is less than 10%.
So, the superconductive current lead 10 of embodiment possesses：The superconducting wire 11 of banding, it passes through in metal substrate
Intermediate layer 112, superconducting layer 113, stabilizing layer 114 are laminated in order on 111；Metal electrode (first electrode 12, second
Electrode 13), it is engaged in the both ends of superconducting wire 11；And reinforced member 14, it is with as defined electrode spacing Le
Mode the lead main body comprising superconducting wire 11 and metal electrode (12,13) is positioned in the state of, accommodate this and draw
Line main body.Moreover, superconducting wire 11 has flexure between metal electrode (12,13).
In superconductive current lead 10, in the case where reinforced member 14 is made up of GFRP or stainless steel alloy etc., superconduction
The percent thermal shrinkage of wire rod 11 is smaller than the percent thermal shrinkage of reinforced member 14.In this case, due to the higher superconducting line of pyroconductivity
The cooling of material 11 is carried out comparatively fast, and the amount of contraction for cooling down initial stage of superconducting wire 11 is bigger than reinforced member 14, if therefore in superconduction
Without flexure is formed on wire rod 11, then the junction surface between superconducting wire 11 and first electrode 12 and second electrode 13 produced
Big load.
According to superconductive current lead 10, by using the flexure formed in superconducting wire 11, absorbing in cooling super
Thermal contraction caused by wire material 11, thus will not be between superconducting wire 11 and first electrode 12 and second electrode 13 junction surface
Produce excessive load, it is ensured that higher reliability.
In addition, in the case where the percent thermal shrinkage of superconducting wire 11 is bigger than the percent thermal shrinkage of reinforced member 14, not only cold
But initial stage, under the pole low temperature environment in operation process, also due to the difference of thermal shrinking quantity and make superconducting wire 11 and
Junction surface between one electrode 12 and second electrode 13 produces excessive load.Even in this case, by superconducting wire
11 form flexure, can also absorb in thermal contraction caused by superconducting wire 11, prevent in superconducting wire 11 and first electrode 12 and
Junction surface between second electrode 13 produces excessive load.
[embodiment 1]
In embodiment 1, prepare a superconducting wire having by the YBCO superconducting layers formed, plating will be applied with to surface
The anaerobic metal electrode made of copper of tin processing is joined to the both ends of superconducting wire, and is contained in reinforced member made of GFRP
And superconductive current lead is made.It is 100mm to make electrode spacing Le, interelectrode to make by changing the total length of superconducting wire
The deflection rate of superconducting wire is 1%, 2%, 5% and 20%.
[reference example 1]
In reference example 1, made in a manner of making deflection rate be 0.3% with the super of structure similarly to Example 1
Electrical conduction current lead.
For the superconductive current lead of embodiment 1 and reference example 1, the critical current properties under the low temperature environment of pole are carried out
Evaluation.Specifically, heat-conducting plate is installed on the metal electrode of superconductive current lead, by conducting cooling by superconductive current lead
Entirety is cooled to 73~78K, and critical electric current value Ic (design load 200A) is determined.In addition, external magnetic field is set to be 0T
(in self-magnetic field).Evaluation result is as shown in table 1.
Table 1
[embodiment 2]
In example 2, two superconducting wires having by the YBCO superconducting layers formed are prepared, and by their Metal Substrate
Plate face is bonded to each other and has made compound superconducting wire.Then, being set up in parallel two in the direction of the width, this is compound
Superconducting wire, its both ends engagement will be applied with tin plating processing on the surface anaerobic metal electrode made of copper, and by its
GFRP reinforced member is contained in, and has made superconductive current lead.It is, make in example 2 super using 4
The superconductive current lead of wire material.It is 100mm to make electrode spacing Le, interelectrode to make by changing the total length of superconducting wire
The deflection rate of superconducting wire is 1.2%, 2%, 6% and 18%.
[reference example 2]
In reference example 2, made in a manner of making deflection rate be 0.4% with the super of structure similarly to Example 2
Electrical conduction current lead.
For the superconductive current lead of embodiment 2 and reference example 2, the critical current properties under the low temperature environment of pole are carried out
Evaluation.Specifically, heat-conducting plate is installed on the metal electrode of superconductive current lead, by conducting cooling by superconductive current lead
Entirety is cooled to 73~78K, and critical electric current value Ic (design load 800A) is determined.In addition, external magnetic field is set to be 0T
(in self-magnetic field).Evaluation result is as shown in table 2.
Table 2
As shown in table 1, table 2, deflection rate Δ D/Le be more than 0.5% embodiment 1 and embodiment 2 in, obtained with
The substantially equal critical current properties of design load.Thus, it is thus identified that so-called of the invention the having in superconducting wire formation flexure
Effect property.In addition, in embodiment 1-4 and embodiment 2-4, although having obtained the critical current properties as design load,
Superconducting wire is significantly bent, it is difficult to is contained in reinforced member.So, embodiment 1-4 and embodiment 2-4 and impracticable, therefore
Represented as a reference example in table 1, table 2.
More than, although the invention that inventor completes specifically is illustrated based on embodiment, the present invention is not
It is limited to above-mentioned embodiment, can be changed in the range of its main points is not departed from.
It is believed that embodiment of disclosure is exemplary rather than restricted explanation in the content of whole.This hair
Bright scope is not by above-mentioned explanation but represented by claims, it is intended that including the implication being equal with claims
And whole changes in scope.
It is willing to specification, the accompanying drawing included in No. 2013-159228 in the Japanese patent application laid that on July 31st, 2013 proposes
And the disclosure of summary is all incorporated in the application.
Claims (7)
- A kind of 1. superconductive current lead, it is characterised in that including：The superconducting wire of banding, it by stacking gradually intermediate layer on metallic substrates, superconducting layer, stabilizing layer form；Metal electrode, it is engaged in the both ends of the superconducting wire；AndReinforced member, it positions in a manner of with defined electrode spacing and houses lead main body, and the lead main body includes The superconducting wire and the metal electrode,Electrode spacing as defined in described is shorter than the exposed length of the superconducting wire,The superconducting wire is scratched in a thickness direction in the state of the lead main body is housed in the reinforced member It is bent.
- 2. superconductive current lead as claimed in claim 1, it is characterised in thatThe electrode spacing is being set to L1, when the amount of deflection of the superconducting wire is set into Δ D, the deflection rate that is represented with Δ D/L1 For more than 0.5%.
- 3. superconductive current lead as claimed in claim 1, it is characterised in thatThere is fixing groove in the end face of the metal electrode,By the way that the end of the superconducting wire is inserted into the fixing groove and engaged with the fixing groove, to the metal electrode It is electrically connected with the superconducting wire.
- 4. superconductive current lead as claimed in claim 1, it is characterised in thatThe low material of reinforced member superconducting wire described in thermal conductivity ratio is formed.
- 5. superconductive current lead as claimed in claim 1, it is characterised in thatThe reinforced member is made up of fibre reinforced plastics.
- 6. superconductive current lead as claimed in claim 1, it is characterised in thatThe superconducting layer is formed using TFA-MOD methods,It is dispersed with the superconducting layer including at least a kind of element, less than 50 μm the oxide in Y, Zr, Sn, Ti, Ce Particle, as flux pinning point.
- 7. superconductive current lead as claimed in claim 1, it is characterised in thatThe stabilizing layer is made up of Ag.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013159228A JP6238623B2 (en) | 2013-07-31 | 2013-07-31 | Superconducting current lead |
| JP2013-159228 | 2013-07-31 | ||
| PCT/JP2014/002573 WO2015015680A1 (en) | 2013-07-31 | 2014-05-15 | Superconducting current lead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105408969A CN105408969A (en) | 2016-03-16 |
| CN105408969B true CN105408969B (en) | 2018-03-20 |
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ID=52431246
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480042321.6A Expired - Fee Related CN105408969B (en) | 2013-07-31 | 2014-05-15 | Superconductive current lead |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6238623B2 (en) |
| CN (1) | CN105408969B (en) |
| WO (1) | WO2015015680A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108573789B (en) * | 2018-06-29 | 2024-04-19 | 宁波健信超导科技股份有限公司 | Fixing device for high-temperature superconductive current lead |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3468888B2 (en) * | 1994-11-29 | 2003-11-17 | 株式会社東芝 | Current leads for superconducting devices |
| JPH08339915A (en) * | 1995-06-09 | 1996-12-24 | Fuji Electric Co Ltd | Current lead for superconducting device |
| US6864430B2 (en) * | 1999-09-09 | 2005-03-08 | Southwire Company | Superconducting cable having a flexible former |
| JP2006253592A (en) * | 2005-03-14 | 2006-09-21 | Sumitomo Heavy Ind Ltd | Superconducting coil and its manufacturing method |
| JP2010098270A (en) * | 2008-10-20 | 2010-04-30 | Sumitomo Electric Ind Ltd | Superconducting coil apparatus |
| JP5675232B2 (en) * | 2010-09-07 | 2015-02-25 | 昭和電線ケーブルシステム株式会社 | Superconducting current lead |
| JP2012064323A (en) * | 2010-09-14 | 2012-03-29 | Swcc Showa Cable Systems Co Ltd | Superconductive current lead |
| KR101798659B1 (en) * | 2011-04-27 | 2017-11-16 | 엘에스전선 주식회사 | Super-conducting cable device |
-
2013
- 2013-07-31 JP JP2013159228A patent/JP6238623B2/en active Active
-
2014
- 2014-05-15 CN CN201480042321.6A patent/CN105408969B/en not_active Expired - Fee Related
- 2014-05-15 WO PCT/JP2014/002573 patent/WO2015015680A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN105408969A (en) | 2016-03-16 |
| JP2015032612A (en) | 2015-02-16 |
| WO2015015680A1 (en) | 2015-02-05 |
| JP6238623B2 (en) | 2017-11-29 |
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