JPH08153563A - Superconductor connecting device - Google Patents

Abstract

PURPOSE: To lessen drop of the critical current by placing electroconductive pushing members in grooves provided in a conductive housing in such a way that the projecting parts of the pushing members are in engagement, subjecting them to pressurizing and heating in a single piece, and connecting filaments with one another by solid phase diffusion. CONSTITUTION: Superconductive element wires with filaments at the ends of superconductors 1, 2 exposed are inserted in a conductor inserting hole provided in a copper housing 8 and a conductor inserting hole provided in a pushing member 11 in such a way as facing the opposing sides in the condition that grooves 10 in the housing and projections 13 on the pushing member 11 are confronting, and are placed in the grooves 10 in engagement. Filaments to be connected 14a, 14b distributed according to the number of grooves are placed in the respective grooves 10. The pushing member 11 is placed in the housing 8 in such a way that the projections 13 are engaged by the grooves 10, and a guide tube having an inside diameter equal to the housing is put on the periphery, followed by pressurization from over and under and heating so that the filaments 14a, 14b are joined together by solid phase diffusion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting conductor connecting device for connecting the ends of two superconducting conductors by solid phase diffusion.

[0002]

2. Description of the Related Art Conventionally, as a method of connecting the ends of two superconducting conductors each of which is composed of a large number of superconducting wires, there are connections by soldering, solid phase diffusion and the like. The method of connecting by soldering is generally to solder the conductor end portion to a copper plate and bond the copper plates to each other with solder. According to this method,
When a current flows from one conductor to the other conductor at the connection portion, it causes Joule heat generation due to solder resistance or contact resistance, or causes current attenuation.

The solid-phase diffusion connection method is effective when heat generation or current attenuation at the connection portion is not allowed. FIG. 15 shows a perspective view of a conventional solid-phase diffusion connection device. That is, first, the end portion of the superconducting conductor 2 is etched, the base material of the superconducting wire is melted, and the filament 3 of the superconducting conductor is exposed. A stranded conductor consists of many strands, but generally when joining strands together,
It is known that the superconducting properties deteriorate as the number of strands increases.

Therefore, a copper housing 4 acting as a conductor connecting jig and a stabilizing copper is formed in a comb shape to provide a plurality of grooves, and the filaments 3 at the ends of the conductors 1 and 2 are evenly arranged according to the number of grooves. Divide and store. Thus, after the ends of the conductor 1 and the conductor 2 are housed in the copper housing 4, the comb-shaped stainless steel pressing member 5 restrains the copper housing 4 from spreading laterally, and the pressing member 5 is used in a vacuum atmosphere. Pressure is applied in the direction of arrow 6 and heating is performed by a heater so that the wires are solid-phase diffused and connected.

In this case, as the number of strands increases, the size in the lateral direction increases, but there is a spatial limitation. Therefore, the above-mentioned structures are stacked in several stages, and these are collectively pressed and pressed. Heat and connect by solid phase diffusion. According to this connection method, the contact resistance between the filaments is zero and the superconductors are directly connected to each other, so that a connection portion without heat generation can be formed.

[0006]

However, when the ends of the two conductors are connected by the above-mentioned connection method by solid phase diffusion, the connection has a value obtained by multiplying the critical current of the wires by the number of wires. If the current does not reach this level, it will undergo normal conduction transition. This critical current is considered as follows.

Usually, since there are many wires to be connected, it is necessary to increase the number of grooves in the copper housing according to the number of wires. Therefore, the grooves are not uniformly pressed, and the joining state is different. Therefore, the critical current characteristics vary in each portion, and the superconducting characteristics of the entire connecting portion deteriorates from the value obtained by multiplying the critical current of the strand by the number.

When the connecting portion connected by the above connecting method is exposed to the fluctuating magnetic field, a shielding current flows between the connected superconductor rows, so that the copper housing 4 generates Joule heat.

It is a first object of the present invention to provide a superconducting conductor connecting device capable of reducing a decrease in the critical current due to a variation in the bonding state of the ends connecting the superconducting conductors by solid phase diffusion.

A second object of the present invention is to provide a superconducting conductor connecting device capable of suppressing heat generation due to a fluctuating magnetic field at a connecting portion for connecting superconducting conductors by solid phase bonding.

[0011]

In order to achieve the above-mentioned object, the present invention comprises a superconducting conductor connecting device by the following means. The invention corresponding to claim 1 is
In a superconducting conductor connecting device in which the ends of two conductors composed of multiple superconducting wires are etched to expose the filaments of the wires and the filaments are connected to each other by solid-phase diffusion, the ends of the conductors extend in multiple radial directions. A cylindrical conductive housing having radial grooves and a conductor insertion hole at the center, and a convex portion having the same diameter as the conductive housing and corresponding to the groove on the end face, and at the center And a columnar conductive pressing member having a conductor insertion hole, one end of the superconducting conductor through the conductor insertion hole of the conductive housing, the other end of the superconducting conductor of the conductive pressing member. The superconducting wires at the respective connection ends are distributed according to the number of grooves through the conductor insertion holes, and the filaments thereof are superposed in each groove of the conductive housing and are radially accommodated, and The conductive housing and the conductive pressing member are arranged in combination so that the protrusions of the conductive pressing member mesh with the respective grooves of the conductive housing, and these are integrally pressed and heated to The filaments are connected to each other by solid phase diffusion.

According to a second aspect of the present invention, the conductive housing is arranged so that the projections of the conductive pressing member engage with the grooves of the conductive housing, and the outer peripheral portion of the conductive pressing member is the conductive housing. Cover with a conductive guide tube with an inner diameter approximately equal to the outer diameter.

The invention corresponding to claim 3 is a superconducting conductor in which the end portions of two conductors composed of a plurality of superconducting wires are etched to expose the filaments of the wires and the filaments are connected by solid phase diffusion. In the connection device,
A plurality of radially extending grooves are provided on both end faces, respectively, and a cylindrical conductive housing having a conductor insertion hole at the center, and the same diameter as the conductive housing and the end faces corresponding to the grooves. And a columnar conductive pressing member having a convex portion and a conductor insertion hole at the center, and one end of the superconducting conductor is passed through the conductor insertion hole of the one conductive pressing member. , The other end of the superconducting conductor is divided into two bundles by dividing the superconducting wire of each connection end through the conductor insertion hole of the other conductive pushing member and each of them is distributed according to the number of grooves, and the filaments thereof are The conductive housings are housed in each groove on both end surfaces of the conductive housing so as to be radially accommodated, and the two conductive pushing members are arranged in combination from both end surfaces of the conductive housing so that the convex portions engage with each groove. Structure And then, integrally pressurized these,
By heating, the filaments are connected to each other by solid phase diffusion.

According to a fourth aspect of the invention, the ends of the two conductors composed of a plurality of superconducting element wires are etched to expose the filaments of the element wires, and the filaments are comb-shaped to form individual conductive housings. Allotted in the groove,
The conductive housing and the conductive pressing member are arranged in combination so that the convex portion of the conductive pressing member formed in a comb shape meshes with the groove of the conductive housing, and these are integrally pressed and heated to heat the filament. In a connecting device for superconducting conductors that collectively connect each other by solid-phase diffusion, pass a superconducting wire with filaments exposed by etching both ends between the groove of the conductive housing and the filament in the groove. The filament at the end of the conductor is connected by solid-phase diffusion to electrically short-circuit.

According to a fifth aspect of the present invention, the ends of the two conductors made of a plurality of superconducting wires are etched to expose the filaments of the wires, and the filaments are comb-shaped to form individual conductive housings. Allotted in the groove,
A superconducting device in which convex portions of a comb-shaped conductive pressing member are arranged so as to mesh with each other in the groove of the conductive housing, and these are integrally pressed and heated to collectively connect filaments by solid-phase diffusion. In the conductor connecting device, a superconducting element wire is embedded in a loop shape in the substrate portion of the comb-shaped conductive housing.

[0016]

In the superconducting conductor connecting device according to the first aspect of the present invention, since the conductive housing having the axial symmetry and having no end is used, the specific groove does not spread during the pressurization.
Therefore, the pressing state of each groove provided in the conductive housing becomes uniform, so that the variation of the joining state is reduced, the decrease of the critical current is small, and the connecting portion having no connection resistance can be configured. .

In the superconducting conductor connecting device according to the second aspect of the present invention, in addition to the above-described effects, the outer peripheral portions of the conductive housing and the conductive pushing member are covered with a conductive guide tube equal to the housing. As a result, the conductive housing and the conductive pressing member are constrained from all directions, so that it is possible to prevent even contact of the conductive pressing member.

In the superconducting conductor connecting device of the invention according to claim 3, two superconducting wires are divided into two bundles in a plurality of radially extending grooves provided on both end faces of the conductive housing. The two pressing members are placed so that they face each other on both sides of the conductive housing so that the grooves and the protrusions are engaged with each other, and these are connected by solid-phase diffusion. Even if the number of wires is large, it is possible to connect without variation, and it is possible to configure a connecting portion having good critical current characteristics.

In the superconducting conductor connecting device of the invention according to claim 4, the shield current is mainly passed through the wires by short-circuiting the grooves of the conductive housing with the superconducting wires. Since it flows as a result, Joule heat generation of the conductive housing can be reduced.

In the superconducting conductor connecting device according to the fifth aspect of the present invention, the superconducting element wire is embedded in a loop shape in the substrate portion of the conductive housing, so that the connecting portion is exposed to the fluctuating magnetic field. Since the shielding current flows in a loop shape through the superconducting element wire, it is possible to suppress Joule heat generation and prevent a temperature rise, and it is possible to configure a connection portion in which normal conduction transition does not easily occur.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment for achieving the first object of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a copper housing used in the first embodiment of the present invention, and FIG. 2 is a perspective view of the pushing member.

The copper housing 8 shown in FIG. 1 is a columnar body having an inner diameter sufficient to pass a superconducting conductor, and has a conductor insertion hole 9 at the center thereof and a plurality of radially extending one end faces. Book grooves 10 are provided radially. The inside of each of these grooves 10 is chamfered to prevent damage to the wires.

On the other hand, the pushing member 11 shown in FIG. 2 is a stainless steel columnar body having the same inner and outer diameters as the housing 8, and has a conductor insertion hole 12 at its center and a copper housing on one end face. A plurality of convex portions 13 are radially formed so as to correspond to the grooves 10 of 8.

Next, the connection between the ends of the two superconducting conductors using the copper housing 8 and the pressing member 11 described above will be described with reference to FIGS. 3 and 4. First, as shown in FIG. 3, the groove 10 of the copper housing 8 and the convex portion 13 of the pushing member 11 are formed.
In such a state that they face each other, the superconducting element wires in which the filaments at the ends of the superconducting conductors 1 and 2 are exposed are provided in the conductor inserting hole of the copper housing 8 and the conductor inserting hole of the pushing member 11, respectively. Through insertion, the superconducting wires are distributed in the number of grooves 10 of the copper housing 8. Then, the filaments 14a and 14b to be connected, which are distributed according to the number of grooves, are accommodated in the respective grooves 10 of the copper housing 8 in an overlapping manner.

Next, the pushing member 11 is arranged in combination with the copper housing 8 so that the projection 13 thereof meshes with the groove 10, and a stainless steel guide tube 15 having an inner diameter equal to that of the housing is shown on the outer peripheral portion thereof in FIG. And pressurize it from above and below and heat it to filament 14a,
14b are joined by solid phase diffusion.

By connecting the ends of the superconducting conductors in this manner, the following effects can be obtained as compared with the conventional connection. That is, in the conventional connecting device, as shown in FIG. 15, the copper housing is constrained only in the lateral direction, and the force is insufficient. Therefore, the width becomes wider toward the outer groove, and the pushing member has one-sided contact or friction, which causes a lower step. The vertical load applied to the groove was decreased and the joining condition deteriorated. For this reason, the outer groove in the lower stage has a poor bonding state, and the critical current tends to decrease.

On the other hand, in the first embodiment, since the copper housing 8 which is axisymmetric and has no end is used, the specific groove does not spread when the pressure is applied. Also, the guide tube 1
5 is a cylindrical shape, and is made of a copper housing 8 and a pushing member 11.
Since it is constrained from all directions, it is possible to prevent the pushing member 11 from hitting one side. Further, the inside of the housing functions as a passage for a coolant such as liquid helium, which contributes to effective cooling.

According to the first embodiment having such a configuration,
Since the pressurization state of each groove provided in the copper housing 8 becomes uniform, the variation in the joint state is reduced, the decrease in the critical current is small, and the connection portion having no connection resistance can be configured.

In general, in a superconducting coil, the magnetic field experienced by the conductor is perpendicular to the conductor. Therefore, the superconducting filaments joined in this example are in the same plane as the magnetic field. Therefore, even if the superconducting coil is rapidly demagnetized, it is difficult for the superconducting filament of this embodiment to be electrically coupled, and it is possible to suppress the loss.

FIGS. 5 and 6 are perspective views showing the copper housing and the pushing member in the second embodiment of the present invention. In the second embodiment, as shown in FIG. 5, between the grooves of the copper housing 8 and between the pressing members 11 as shown in FIG.
Through holes 16 are provided so as to correspond to each other between the respective convex portions.

According to this structure, the cooling efficiency is improved by circulating the coolant such as liquid helium through the through holes after connecting the ends of the two superconducting conductors. Therefore, since a larger amount of heat can be permitted, the axial length of the copper housing 8 functioning as the stabilizing copper can be shortened, and a more compact connecting portion can be configured.

Although the shape of the through-holes is not shown here, through-holes that are long in the radial direction may be provided radially. FIG. 7 is a perspective view of a connecting portion showing a third embodiment of the present invention.

When the number of superconducting wires forming the superconducting conductor is large, the number of connecting grooves may be insufficient with only one end face of the copper housing 8. Therefore, in such a case, as shown in FIG. 7, a plurality of radially extending grooves 18 and 19 are radially provided on both end surfaces of the copper housing 17, and a superconducting wire (not shown) is provided in the grooves 18 and 19. Divide into two bundles and store each. Then, the two pressing members 20 and 21 are overlapped so as to face both end surfaces of the housing 17 so that the grooves and the convex portions are engaged with each other, and pressure is applied from both sides, and heating is performed to perform solid phase diffusion bonding.

According to the third embodiment having such a configuration,
Since the pressure is not applied in multiple steps, even if the number of superconducting wires is large, it is possible to make connections without variations, and it is possible to configure a connecting portion having good critical current characteristics.

FIG. 8 is a radial sectional view of a copper housing showing a fourth embodiment of the present invention. In the fourth embodiment, as shown in FIG. 8, a copper pipe 22 is provided in a conductor insertion hole provided at the center of the copper housing 8 and the pressing member (not shown).
Is inserted, and the superconducting element wire arranged on the outer side of the pipe 22 is impregnated with the solder 23 and fixed.

With this structure, the copper housing 8 and the pipe 22 inserted in the central portion of the pressing member (not shown) can be used as a flow path for a coolant such as liquid helium, so that the cooling efficiency can be improved. Also, the pipe 22
Since the solder 23 is impregnated and fixed to the superconducting element wire arranged outside of, the superconducting element wire in the connection part can be prevented from moving due to electromagnetic force, and the connection part which is hard to transfer to the normal conduction can be configured.

FIG. 9 is a perspective view of a connecting portion showing a fifth embodiment of the present invention. When the connecting conductor is a cable-in-conduit type, supercritical helium or the like is circulated in the conductor.

Therefore, in the fifth embodiment, the superconducting element wires are connected by solid diffusion as shown in FIG.
Weld 4,25 conduits to both ends of the connection. Further, both ends of the guide tube 15 are welded to the copper housing 8 and the pressing member 11 to ensure the airtightness inside the connecting portion.

In the fifth embodiment having such a structure, the connecting portion can be connected to the cable-in-conduit type conductor to form a supercritical helium flow path. Further, it becomes possible for the guide tube 15 to form a connecting portion having the function of a restraint jig and the function of a conduit.

Next, an embodiment for achieving the second object of the present invention will be described with reference to the drawings. FIG. 10 is a schematic cross-sectional view of a connecting portion of a superconducting conductor showing a sixth embodiment of the present invention. The same parts as those in FIG. 15 are designated by the same reference numerals.

As shown in FIG. 10, the filaments 3 at the ends of the conductors 1 and 2 are housed in each groove of a comb-shaped copper housing 4 evenly divided according to the number of grooves. Next, as shown in FIG. 11, the base materials at both ends of the short superconducting wires 26 and 27 are melted to expose the filaments 28 and 29 of the superconductor,
The superconducting wires 26 and 27 are arranged so as to pass between the grooves 30 and 31 on both sides of the copper housing 4, and the filaments 28 and 29 are superposed on the filament 3 of the conductors 1 and 2.

As described above, the filaments 28 and 29 of the superconductors 1 and 2 housed in the grooves 30 and 31 on both sides of the comb-shaped copper housing 4 are pressurized in the copper housing 4 and heated to be solid-phase bonded.

With such a structure, the following operational effects can be obtained as compared with the conventional connection method. That is,
In the case of the conventional connection method shown in FIG. 15, when the connection portion is exposed to the magnetic field 32 that changes with time, a shield current 33 as shown in FIG. 16 flows through the connection portion. At this time, no heat is generated in the superconductor, but Joule heat is generated in the copper housing 4, causing a rise in the temperature of the connection portion.

On the other hand, in the sixth embodiment, when the grooves 30 and 31 on both sides of the copper housing 4 are short-circuited by the superconducting wires 26 and 27 as shown in FIG.
Since it flows through Nos. 6 and 27, the Joule heat generation of the copper housing 4 seen in FIG. 16 can be reduced. However, since the shielding current flowing through the transition superconducting wires 26 and 27 is almost proportional to the magnitude of the magnetic field fluctuation, it is necessary to adjust the number of the transition wires so that the transition wires do not undergo normal conduction transition when the fluctuation is fast.

As described above, according to the structure of the sixth embodiment, Joule heat generation can be suppressed even when placed in a fluctuating magnetic field, so that a temperature rise can be prevented and a connection portion which is hard to undergo normal conduction transition is formed. can do.

FIG. 12 is a schematic cross-sectional view of a connecting portion of a superconducting conductor showing a seventh embodiment of the present invention. Note that FIG.
The same parts as those shown in FIG. As shown in FIG. 12, the superconducting conductors 1 and 2 are provided in the respective grooves of the comb-shaped copper housing 4.
The filaments 3 at the ends of are equally divided and stored according to the number of grooves. Next, the superconducting wires 35 and 36 from which the stabilizing copper at both ends is removed are passed between the groove 30 on one side of the copper housing 4 and the groove 34 on the center, and the groove 31 on the other side of the copper housing 4 and the groove on the center. The same superconducting wires 37 and 38 are also arranged between 34 and 34.

The end filaments of these superconducting wires 35, 36, 37 and 38 are solid-phase bonded together with the filaments 3 of the conductors 1 and 2. Further, heaters 39 are installed on the convex portions on both sides of the copper housing 4.

With this structure, the following operational effects can be obtained. That is, in the case of the conventional connection method shown in FIG. 15, it has been found that the superconductor joined by the outer grooves 31 and 32 has a smaller critical current than the superconductor joined by the central groove 34.

Therefore, with the above-mentioned structure, when the current in the superconductors in the outer grooves 31, 32 is saturated during energization, the currents higher than that are superconducting wires 35, 36, 37, 3.
8 into the superconductor in the central groove 34. Further, when the energizing current is reduced, there is a possibility that some permanent current remains even if the energizing current becomes zero due to some imbalance, but in this case, the heater 39 is energized to keep the superconducting portion in the normal condition. The permanent current is prevented from remaining by conducting the electric conduction.

In the seventh embodiment as described above, it is possible to prevent quenching due to the temperature rise of the entire connecting part triggered by the normal transition of the outer groove, and the decrease in critical current is small. The parts can be configured.

FIG. 13 is a perspective view of a connecting portion of a superconducting conductor showing an eighth embodiment of the present invention. The same parts as those in FIG. 15 are designated by the same reference numerals. In the eighth embodiment, when the direction of the fluctuating magnetic field to be experienced is the arrow 40 shown in FIG. 13, it is arranged as shown in the copper housing 4, and the pushing member 5 is pressed from the direction of the arrow 41 shown to press the conductor and the crossover. The superconducting element wire is joined by solid phase diffusion.

According to this structure, the shielding current does not flow between the superconductors, the Joule heat generation can be reduced, and when the currents of the superconductors in the grooves 31 and 32 are saturated, they are shunted to the central groove 34. Therefore, it is possible to configure the connection portion in which the decrease in the critical current is small.

FIG. 14 is a perspective view of a copper housing 4 for connecting the ends of a superconducting conductor showing a ninth embodiment of the present invention. In the ninth embodiment, as shown in FIG. 14, a loop-shaped groove is formed in the board portion of the copper housing 4, and the superconducting element wire 43 is arranged along this groove and soldered,
The copper housing 4 is used to solid-phase bond conductors to each other.

With such a structure, even if the connecting portion is exposed to the fluctuating magnetic field, the shielding current flows in a loop through the superconducting element wire 43, so that it is possible to suppress Joule heat generation and prevent a temperature rise. It is possible to configure a connection portion in which the normal conduction transition is unlikely to occur.

[0055]

As described above, according to the superconducting conductor connecting device of the present invention, it is possible to reduce the decrease in the critical current due to the variation in the joining state of the ends connecting the superconducting conductors by solid phase diffusion. Further, the solid-state joining can suppress heat generation in the connecting portion connecting the superconducting conductors due to the fluctuating magnetic field.

[Brief description of drawings]

FIG. 1 is a perspective view showing a copper housing used in a first embodiment of the present invention.

FIG. 2 is a perspective view showing a pressing member also made of stainless steel.

FIG. 3 is a perspective view for explaining a connection state of superconducting wires in the same example.

FIG. 4 is a perspective view showing an overall configuration of a connecting portion in the embodiment.

FIG. 5 is a perspective view showing a copper housing according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a stainless steel pushing member in the embodiment.

FIG. 7 is a perspective view of a connecting portion showing a third embodiment of the present invention.

FIG. 8 is a radial cross-sectional view of a copper housing showing a fourth embodiment of the present invention.

FIG. 9 is a perspective view of a connecting portion showing a fifth embodiment of the present invention.

FIG. 10 is a schematic cross-sectional view of a connecting portion of a superconducting conductor showing a sixth embodiment of the present invention.

FIG. 11 is a configuration diagram of a transitional superconducting element wire in the same example.

FIG. 12 is a schematic cross-sectional view of a connecting portion of a superconducting conductor showing a seventh embodiment of the present invention.

FIG. 13 is a perspective view of a connecting portion of a superconducting conductor showing an eighth embodiment of the present invention.

FIG. 14 is a perspective view showing a copper housing for connecting the ends of the superconducting conductor in the ninth embodiment of the present invention.

FIG. 15 is a perspective view showing a connection portion of a conventional superconducting conductor.

FIG. 16 is a conceptual diagram for explaining a shield current flowing in a connection portion of the superconducting conductor.

[Explanation of symbols]

1, 2 ... Superconducting conductor, 3 ... End filament, 4 ...
… Copper housing, 5 …… Stainless steel pushing member, 8
...... Copper housing, 9 ...... Conductor insertion hole, 10 ...... Groove,
11 ... Stainless pushing member, 12 ... Conductor insertion hole, 13 ... Convex portion, 14a, 14b ... Filament,
15 ... Guide tube, 16 ... Through hole, 17 ... Copper housing, 18, 19 ... Groove, 20, 21 ... Pushing member, 22 ... Pipe, 23 ... Solder, 24, 25 ...
Superconducting conductor, 26, 27 ... Superconducting element wire, 28, 29 ...
… Filament, 30, 31… Groove, 32… Magnetic field, 3
3 ... Shielding current, 34 ... Groove, 35, 36, 37, 38
...... Superconducting wire, 39 …… Heater, 43 …… Superconducting wire.

Claims (5)

[Claims] 1. An end portion of two conductors composed of a plurality of superconducting wires is etched to expose filaments of the wires,
In a superconducting conductor connecting device for connecting filaments to each other by solid-phase diffusion, a cylindrical conductive housing having a plurality of radially extending grooves radially provided on an end face and having a conductor insertion hole at a central portion, A conductive housing having the same diameter as that of the conductive housing, the end surface of which is provided with a projection corresponding to the groove, and the central portion of which has a cylindrical conductive pressing member, and which has one end of the superconducting conductor Through the conductor insertion hole of the conductive housing, the other end of the superconducting conductor is distributed through the conductor insertion hole of the conductive pressing member to divide the superconducting wire at each connection end according to the number of grooves, and the filaments thereof are The conductive housing is housed in the grooves of the conductive housing so as to be radially overlapped with each other, and the convex portions of the conductive pressing member engage with the grooves of the conductive housing. And pressing the conductive made by combining the member is configured to be placed,
A connecting device for superconducting conductors, characterized in that they are integrally pressurized and heated to connect the filaments by solid phase diffusion. 2. The superconducting conductor connecting device according to claim 1, wherein a conductive guide tube having an inner diameter substantially equal to an outer diameter of the conductive housing is used to engage the convex portion of the conductive pushing member with each groove of the conductive housing. A connecting device for a superconducting conductor, characterized in that it covers the outer circumferences of a conductive housing and a conductive pushing member arranged so as to match. 3. An end portion of two conductors composed of a plurality of superconducting wires is etched to expose filaments of the wires,
In a superconducting conductor connecting device for connecting filaments to each other by solid-phase diffusion, a cylindrical conductive housing having a plurality of radially extending grooves radially provided on both end faces and having a conductor insertion hole in the center thereof. A superconducting conductor having the same diameter as that of the conductive housing and provided with a convex portion on the end face corresponding to the groove and having a cylindrical conductive pushing member having a conductor insertion hole at the center thereof. Through the conductor insertion hole of one of the conductive pressing members, the other end of the superconducting conductor through the conductor insertion hole of the other conductive pressing member into two bundles of superconducting wires at each connection end. The filaments are divided and distributed according to the number of grooves, and the filaments are superposed in the grooves on both end faces of the conductive housing and radially accommodated, and both ends of the conductive housing are divided. From the side, the two conductive pressing members are arranged in combination so that the convex portions engage with each groove, and these are integrally pressurized and heated to connect the filaments by solid phase diffusion. A characteristic device for connecting superconducting conductors. 4. An end portion of two conductors composed of a plurality of superconducting wires is etched to expose filaments of the wires,
The filament is distributed and stored in individual grooves of a comb-shaped conductive housing, and the conductive housing and the conductive push are engaged so that the convex portions of the comb-shaped conductive pressing member mesh with the grooves of the conductive housing. A superconducting conductor connecting device in which members are arranged in combination, and these are integrally pressed and heated to collectively connect filaments by solid-phase diffusion bonding, wherein both end portions are provided between the grooves of the conductive housing. A superconducting wire having a filament exposed by etching, and the filament is connected to the filament at the conductor end in the groove by solid phase diffusion to electrically short-circuit the superconducting conductor. 5. The ends of two conductors composed of a plurality of superconducting wires are etched to expose the filaments of the wires,
The filaments are distributed and housed in individual grooves of a comb-shaped conductive housing, and the conductive housing and the conductive push are engaged so that the convex portions of the comb-shaped conductive pressing member mesh with the grooves of the conductive housing. In a superconducting conductor connecting device in which members are arranged in combination, and these are integrally pressed and heated to collectively connect filaments by solid-phase diffusion bonding, a superconducting wire is provided on a substrate portion of the comb-shaped conductive housing. A device for connecting superconducting conductors, in which the wires are embedded in a loop shape.