CN101075496A - Connector between high-temperature superconductive magnet double-cake coils and its welding method - Google Patents
Connector between high-temperature superconductive magnet double-cake coils and its welding method Download PDFInfo
- Publication number
- CN101075496A CN101075496A CN 200710098558 CN200710098558A CN101075496A CN 101075496 A CN101075496 A CN 101075496A CN 200710098558 CN200710098558 CN 200710098558 CN 200710098558 A CN200710098558 A CN 200710098558A CN 101075496 A CN101075496 A CN 101075496A
- Authority
- CN
- China
- Prior art keywords
- matrix
- double
- groove
- nbti
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
This is a tie-in of double pie loop for high temperature super conducting magnet and its jointing method. The tie-in composes a concave base, NbTi bridge and a convex cover. The concave base is the matrix of the tie-in and made by metal like copper of low resistivity, of a shape in arc and radial section in rectangle and is fixed to a magnet. The NbTi bridge is embedded in the groves[C1, C2] on the base, and the convex beam on the convex cover is also embedded in the groves to fix the NbTi bridge.
Description
Technical field
The present invention relates to joint between double-cake coils and welding method thereof in a kind of high-temperature superconducting magnet, particularly be operated in joint and welding method thereof between the double-cake coils of liquid helium warm area high-temperature superconducting magnet.
Background technology
High-temperature superconducting magnet has high stability, high current density and the low-temperature superconducting advantages such as upper critical magnetic field that are beyond one's reach at the liquid helium warm area, has broad prospects in application facet such as Magnetic resonance imaging, high-intensity magnetic field, energy storage.
It is silver-colored jacket band (Bi-2223/Ag) and the present YBCO coating high-temp superconducting tape of researching and developing that the conductor that can be used for the coiling high-temperature superconducting magnet has the bismuth of having commercially produced, length is all limited, be generally 100 meters～200 meters, and conductor is long more, the rate of finished products of product is low more, and corresponding price is also high more.Because characteristics such as the banded structure of this superconductor, the mechanical property of fragility rapid wear and limited length have determined high-temperature superconducting magnet generally to adopt the double-cake coils structure, the series and parallel by a plurality of high-temperature superconductor double-cake coils is assembled into high-temperature superconducting magnet again.
Usually adopt refrigeration machine or liquid helium to soak in the liquid helium warm area type of cooling, cost is all very expensive, therefore reduce the Joule heat loss of joint resistance between each double-cake coils in the magnet as far as possible, be improve magnet stability, reduce magnet and cryogenic system operating cost, determine the key that can this system long-time running.Owing to still there is not at present the without hindrance joint technology of a kind of high-temperature superconductor convenient and reliable, that reach the engineering application level, therefore connection resistance is dropped in the scope that the cryogenic system operation of magnet allowed, be one of key technology of magnet development.Jointing in the high-temperature superconducting magnet between each double-cake coils has two kinds of methods usually: splicing processes and transition metal method.Splicing processes is that the superconduction band tap of adjacent two double-cake coils is welded together the zone face of two bands along the winding direction of routing with scolding tin; This method is simple in structure, but between two pairs of cakes certain span is arranged axially, and two overlap joint taps are easily sprained; Directly weld with flatiron, can not temperature control, overheatedly easily pad is caused damage; The soldering-tin layer uniformity is difficult to grasp, easily rosin joint; Above factors cause connection resistance bigger than normal.The transition metal method be the superconduction band tap soldering of adjacent two double-cake coils on low resistivity metal sheets such as fine copper or silver, by the low resistivity metal sheet adjacent two double-cake coils are welded together; Compare with splicing processes, can avoid the influence of adjacent two axial spans of double-cake coils to the overlap joint tap, be difficult to temperature control but also directly weld with flatiron, the thickness of the soldering-tin layer between superconduction band and sheet metal has very big randomness, and easy rosin joint, thereby cause the connection resistance value difference not big.
Summary of the invention
For overcoming the shortcoming that prior art exists, the invention provides joint and welding method thereof between a kind of double-cake coils that is operated in liquid helium warm area high-temperature superconducting magnet.The present invention utilizes low-temperature superconducting NbTi line to be easy to the mechanical property of moulding, remedied the defective that hts band fragility can not the minor radius bending, low-temperature superconducting and high-temperature superconductor are combined, not only make the easy easy operating of the welding between each double-cake coils in the high-temperature superconducting magnet, and effectively the connection resistance value is dropped in the scope that the magnet cryogenic system allowed.
Joint of the present invention mainly is made up of spill matrix, NbTi bridge, convex lid etc.The spill matrix is fixed on the magnet, is the joint parent, and the NbTi bridge is embedded in the Baltimore groove on the matrix, and the convex beam of convex lid then snaps in the Baltimore groove on the matrix and compresses, fix N bTi bridge.The spill matrix is about 10-25cm, is the twice of common superconduction band overlap welding length, is the arc body that is processed by low resistivity metal such as red coppers, and radial cross section is a rectangle.Two parallel welding Baltimore grooves are arranged on the matrix outer ring surface, and the width of Baltimore groove is wideer slightly than the width of the used hts band of double-cake coils, and the degree of depth h of Baltimore groove calculates with formula (1):
h＝2[nt1+(n+2)t2+t3] (1)
Wherein: t1 is that superconduction tape thickness, n are that superconduction band radical, the t2 of coiling double-cake coils is that strip of tin foil thickness, t3 are NbTi bridge thickness.
For example: the thick 0.3mm of superconduction bandwidth 4.8mm, the thick 0.2mm of tinfoil paper, the thick 1.5mm of NbTi bridge then uses the double-cake coils of single superconduction band coiling, welding spill groove width 5mm, dark 4.8mm; Biobelt and around double-cake coils, welding groove width 5mm, dark 5.8mm.
Article two, have between Baltimore groove on " partition wall ", the thickness of the thickness of " partition wall " and the assembling insulation spacer between two double-cake coils during magnet equates.Interposition at " partition wall " is equipped with a breach that connects two Baltimore grooves, is the lead-over groove of NbTi bridge between two welding Baltimore grooves, and its width is advisable can embed the NbTi bridge smoothly.Having a plurality of through holes to place heaters on vertical welding Baltimore groove direction, the aperture of through hole and number be by the power and the size decision of the heater that is adopted, with heated coupling, easy to loading and unloading being advisable faster; A small through hole laying temperature probe, the aperture of through hole is big slightly than temp probe, and is suitable being inserted as smoothly.The fixing threaded hole that matrix fixing hole and convex lid and matrix are radially arranged of matrix.
The NbTi bridge is to adopt the NbTi band of square-section through simply processing, and its width is close with the superconduction bandwidth.The NbTi band that intercepted length is longer slightly than spill matrix, serpentine of folding is curved in the centre position.From an end of NbTi bridge, embed successively in left concave groove, lead-over groove and the right side Baltimore groove of matrix then, the part that grows matrix is cut, take out standby.Convex lid is in the Baltimore groove that embeds on the matrix, rise during welding compress, the convex part of fixation, the convex beam width is slightly smaller than the width of Baltimore groove, highly is about 2h/3.It is close with the superconduction bandwidth that the common tinfoil paper of thick about 0.1～0.5mm (183 ℃ of molten points) is cut into width, and long 1/2nd band for spill matrix length cleans up standby.
Connector welding method in the high-temperature superconducting magnet of the present invention between each double-cake coils is as follows:
Behind magnet assembling, fastening the finishing, each double-cake coils is welded, realize the string of each double-cake coils and connect.Welding sequence is as follows: (1) clean: each parts of each double-cake coils tap and joint are clean with gauze, alcohol wipe; (2) the matrix location is with fixing: the spill matrix is embedded in the Baltimore groove that processes in advance on the peripheral buttress brace of magnet (this groove cooperates processing with the spill matrix), with the countersunk head nut matrix and the peripheral buttress brace of magnet are fixed, and the bottom surface that guarantees the matrix welding groove and buttress brace surface on one side (radial location), pass through the Baltimore groove up and down (axial location) of matrix after the superconduction band tap of two adjacent double-cake coils that weld is stretching respectively; (3) tinfoil paper band at the bottom of the standing groove: the tinfoil paper band that a slice is cut is two-sided evenly coat the scaling powder phosphoric acid of 10%-15% after, rely on the surface tension of phosphoric acid,diluted the tinfoil paper band to be close on the bottom surface of upside Baltimore groove; (4) place the tap of superconduction band: the upside Baltimore groove is put in the following tap of upside double-cake coils, and gently hauls the tap afterbody with have gentle hands, makes the superconduction zone face be close to the tinfoil paper band of bottom land; (5) place the tinfoil paper band: repetition (3) also is attached to the tinfoil paper band on the superconduction zone face of bottom land; (6) according to step (3)～(5) the last tap of downside double-cake coils and tinfoil paper band are placed in the downside Baltimore groove; (7) settle the NbTi bridge: an end embeds in the upside Baltimore groove of matrix and is close to tinfoil paper band in the groove, and in the curved lead-over groove that embeds between two Baltimore grooves of serpentine, the other end embeds in the downside Baltimore groove of matrix and is close to tin-foil plate in the groove; (8) place the tinfoil paper band: repeat (3) and all place the tinfoil paper band in the groove up and down, and they are attached on the NbTi bridge floor in the groove; (9) upside convex lid is fixing: the convex beam of convex lid is snapped in the Baltimore groove of upside, and four screws on four through holes and the matrix are aligned, with the tension of the double-cake coils tap in the side channel on the handgrip, tighten the convex lid with the screw appropriateness, make closely contact between convex beam, groove inner stacks body; (10) the downside convex lid that uses the same method fixedly; (11) place heater and temp probe: a plurality of heaters and temp probe are inserted respectively in the bottoming hole and temp probe hole on the matrix; (12) temperature control heating: utilize temperature control heating device slowly to heat up and temperature control at 185 ℃, when waiting the port of two Baltimore grooves to have scolding tin to overflow, the afterbody of tension superconduction band tap, tighten the fixed screw of convex lid simultaneously, extrude unnecessary scolding tin, stop heating then, remove heater and temp probe; (13) prune and clean: cut the afterbody of tap after the cooling, handle the scolding tin that overflows, wipe scaling powder phosphoric acid and dirt with alcohol.So far finish the welding of joint between a double-cake coils, adopt above-mentioned steps to finish the welding of other joint.
The present invention is easy to low-temperature superconducting NbTi line the mechanical property of moulding, being applied in the welding of high-temperature superconductor joint of success, effectively the connection resistance value of high-temperature superconducting magnet being dropped to the liquid helium warm area by the NbTi bridge moves in the scope that is allowed, improve the stability of magnet, reduced the operating cost of magnet cryogenic system.
Description of drawings
Fig. 1 spill basal body structure figure is among the figure: 1 spill matrix, 2 counter sinks, 3 screws, 4NbTi bridge transition groove, 5 heater through holes, 6 temp probe holes, two ends, A, B recessed matrix 1 left and right sides, two welding of C1, C2 Baltimore groove;
Fig. 2 NbTi bridge schematic diagram, 7NbTi bridge among the figure;
Fig. 3 convex lid structure chart, 8 convexs lid among the figure, 9 convex beams, 10 through holes;
Two double-cake coils schematic diagrames of Fig. 4, D1 upside double-cake coils, D2 downside double-cake coils, the following superconduction band tap of 11 double-cake coils D1, the last superconduction band tap of 12 double-cake coils D2;
Each component-assembled welding sequence figure of Fig. 5,13 dormant bolts among the figure, 14-1,14-2,14-3,15-1,15-2,15-3 tinfoil paper band, 16 convexs are covered 8 set bolts, 17 convexs lid;
Fig. 6 also-string-and structure spill matrix;
Fig. 7 also-string structure spill matrix.
Embodiment
Further specify the present invention below in conjunction with the drawings and specific embodiments.
The present invention mainly is made up of spill matrix 1, NbTi bridge 7, convex lid 8 etc.As shown in Figure 1, spill matrix 1 is fixed on the magnet, is the joint parent, and NbTi bridge 7 is embedded in Baltimore groove C1, the C2 on the matrix 1, and 9 on the convex beam of convex lid 8 snaps in Baltimore groove C1, the C2 on the matrix 1 and compresses, fix N bTi bridge 7.Spill matrix 1 is about 10-25cm, is the twice of common superconduction band overlap welding length, is the arc body that is processed by low resistivity metal such as red coppers, is critical piece of the present invention.The width of Baltimore groove C1, C2 is wideer slightly than the width of the used hts band 11 of double-cake coils D1, D2 and 12, the degree of depth h of groove is with formula: h=2[nt1+ (n+2) t2+t3] calculate, wherein: t1 is the thickness of superconduction band 11 and 12, n is the superconduction band radical of coiling double-cake coils D1, D2, t2 is the thickness of strip of tin foil 14, and t3 is the thickness of NbTi bridge 7.
The thick 0.3mm of wide 4.8mm of superconduction band 11,12 for example, the thick 0.2mm of tinfoil paper 14, NbTi bridge 7 thick 1.5mm then use double-cake coils D1, the D2 of the coiling of single superconduction band, the wide 5mm of welding Baltimore groove C1, C2, dark 4.8mm; Biobelt and around double-cake coils, the wide 5mm of welding groove C1, C2, dark 5.8mm.
Article two, have between Baltimore groove C1, C2 on " partition wall ", the thickness of the thickness of " partition wall " and the assembling insulation spacer between two double-cake coils D1, D2 during magnet equates.Interposition at " partition wall " is equipped with a breach that connects two Baltimore grooves, is the lead-over groove 4 of NbTi bridge 7 between two welding Baltimore groove C1, C2, and its width is advisable can embed NbTi bridge 7 smoothly.Have on perpendicular to welding groove C1, C2 direction a plurality of through holes 5 to place heaters, the size of heater through hole 5 and number be by the heater decision of being adopted, and is advisable with heated coupling faster; Small through hole 6 a laying temperatures probe, the aperture of two kinds of through holes is big slightly than heater and temp probe, and is suitable being inserted as smoothly.Matrix 1 the fixedly fixing threaded hole 3 of counter sink 2 and convex lid and matrix of matrix 1 radially arranged.
As shown in Figure 2, the NbTi bridge is to adopt the NbTi band of square-section simply to process, its width is close with the superconduction bandwidth, realizes the without hindrance shunting of superconduction in joint, and what make electric current without hindrance or low-resistance from the superconduction band tap 11 of double-cake coils D1 flow to superconduction band tap 12.The NbTi band that intercepted length is longer slightly than spill matrix 1, serpentine of folding is curved in the centre position.From an end of NbTi bridge 7, embed successively in Baltimore groove C1, NbTi bridge transition groove 4 and the Baltimore groove C2 of matrix then, the part that grows matrix 1 is cut, take out standby.
The structure of convex lid 8 as shown in Figure 3, convex lid 8 is in Baltimore groove C1, the C2 that embeds on the matrix 1, rise during welding compress, the convex part of fixation; There are 4 screws 3 of an end on 4 through holes 10 and the matrix 1 to match on the convex lid 8, realize that by nut convex lid 8 is fixing with matrix 1; Convex beam 9 at spill matrix 1A end matches with Baltimore groove C1, and 9 Baltimore groove C2 match at B end convex beam, and the width of convex beam 9 is narrower slightly than the width of Baltimore groove C1, C2, highly is about 2h/3.It is close with the superconduction bandwidth that the common tinfoil paper of thick about 0.1～0.5mm (183 ℃ of molten points) is cut into width, long for long 1/2nd being with of spill matrix, cleans up standby.
Fig. 4 is any two double-cake coils schematic diagrames in the high temperature superconducting magnet, and joint of the present invention is realized the following tap 11 and the upward low resistance welding of tap 12 of double-cake coils D2 of double-cake coils D1.
Behind magnet assembling, fastening the finishing, each double-cake coils is welded, realize the string of each double-cake coils and connect.As shown in Figure 5, the welding procedure sequence of steps is as follows:
(1) clean: each double-cake coils tap and spill matrix 1, NbTi bridge 7, convex lid 8, tinfoil paper band 14-15 and each set bolt etc. are clean with gauze, alcohol wipe;
(2) matrix 1 location is with fixing: spill matrix 1 is embedded in Baltimore groove C1, the C2 that processes in advance on the peripheral buttress brace of magnet (this groove cooperates processing with spill matrix 1), with countersunk head nut 13 the peripheral buttress brace of matrix 1 and magnet is fixed, and the bottom surface that guarantees matrix 1, Baltimore groove C1, C2 and buttress brace surface on one side (radial location), pass through Baltimore groove C1, C2 (axial location) respectively after the superconduction band tap 11 and 12 of two adjacent double-cake coils D1, D2 is stretching;
(3) place strip of tin foil 14-1: behind the two-sided scaling powder phosphoric acid of evenly coating 10%-15% of the strip of tin foil 14-1 that cuts, the surface tension of support phosphoric acid,diluted is close to tin-foil plate 14-1 on the bottom surface of Baltimore groove C1;
(4) place superconduction band tap 11: Baltimore groove C1 is put in the following tap 11 of double-cake coils D1, and gently hauls the afterbody of tap 11 with have gentle hands, makes the superconduction zone face be close to the tin sheet 14-1 of bottom land;
(5) place strip of tin foil 14-2: repeat (3) and also strip of tin foil 14-2 is attached on the superconduction zone face of bottom land;
(6) according to step (3)～(5) the last tap 12 of double-cake coils D2 and tin-foil plate 15-1 and 15-2 are positioned in the Baltimore groove C2;
(7) embed 7: one ends of NbTi bridge and embed in the A end Baltimore groove C1 of matrix 1 and be close to strip of tin foil 14-2 in the groove, the curved transition breach 4 that embeds between two Baltimore grooves of serpentine, the other end embed in the groove C2 of matrix 1B end and are close to strip of tin foil 15-2 in the groove;
(8) place strip of tin foil 14-3 and 15-3: repeat (3), in groove C1C2, settle strip of tin foil 14-3 and 15-3 respectively, and they are attached on the NbTi bridge 7 in the groove;
(9) location of convex lid 8 is with fixing: the convex beam 9 of convex lid 8 is snapped in the Baltimore groove C1, and four through holes 10, four screws 3 of A end with matrix 1 are aligned, with handgrip double-cake coils D1 tap 11 tensions, tighten convex lid 8 with screw 16 appropriateness, make closely contact between many duplexers in convex beam 9 and the groove C1;
(10) the convex lid 17 that uses the same method fixedly;
(11) place heater and temp probe: 6 heaters and temp probe are inserted respectively in the bottoming hole 5 and temp probe hole 6 on the matrix 1;
(12) temperature control heating: utilize slow intensification of temperature control heating device and temperature control between 185 ℃～200 ℃, when the port for the treatment of Baltimore groove C1, C2 has scolding tin to overflow, strain the afterbody of superconduction band tap 11,12 simultaneously, tighten the fixed screw 16 of convex lid 8,17, extrude unnecessary scolding tin, stop heating then, remove heater and temp probe;
(13) prune and clean: cut the afterbody of tap 11,12 after the cooling, handle the scolding tin that overflows, wipe scaling powder phosphoric acid with alcohol.So far finish the welding of a joint, adopt above-mentioned steps to finish the welding of other joint.
The NbTi bridge 7 of joint of the present invention also can adopt the NbTi bandlet in other cross section, when the operating temperature of magnet is higher than 10K, also can remove NbTi bridge 7, and other structure is constant.
The above is the welding method of double-cake coils D1, D2 serial connection, shown in Fig. 1-5.Also can be used for two double-cake coils and connect the back with two and connect being connected in series of double-cake coils, as shown in Figure 6.Perhaps as shown in Figure 7, be used for two double-cake coils and connect the back be connected in series with a double-cake coils.
The present invention is on probation in 1MJ high-temperature superconducting energy storage magnet, and minimum connection resistance is 5.3 * 10 under the acquisition liquid helium
-9Ω, 23 the joint all-in resistances of surveying are 3.26 μ Ω, magnet 39 joint total losses when normal operation can satisfy the requirement of system's long-time running less than 1.8 watts.
Claims (5)
1, the joint between a kind of high-temperature superconductive magnet double-cake coils is characterized in that mainly being made up of spill matrix [1], NbTi bridge [7], convex lid [8]; Spill matrix [1] is the joint parent, is the arc body that is processed by low resistivity metal such as red coppers, and radial cross section is a rectangle, is fixed on the magnet; NbTi bridge [7] is embedded in the Baltimore groove [C1, C2] on the matrix [1], and the convex beam [9] of convex lid [8] snaps in the groove [C1, C2] on the matrix [1] and compresses, fix N bTi bridge [7]; The length of spill matrix [1] is the twice of superconduction band overlap welding length; Article two, the width of parallel Baltimore groove [C1, C2] is wideer slightly than the width of the used hts band of double-cake coils [D1, D2] [11,12], the degree of depth h of Baltimore groove [C1, C2] groove is with formula: h=2[nt1+ (n+2) t2+t3] calculate, wherein: t1 is the thickness of superconduction band [11,12], n is the superconduction band radical of coiling double-cake coils [D1, D2], t2 is the thickness of strip of tin foil [14], and t3 is the thickness of NbTi bridge [7]; The thickness of the insulation spacer between the distance between Baltimore groove [C1, C2] and two double-cake coils [D1, D2] equates; The heater through hole [5] of placement heater and the through hole of laying temperature probe are arranged on the spill matrix [1]; Spill matrix [1] realizes that by counter sink [2] location of matrix [1] and magnet is with fixing; Convex beam [9] width is slightly smaller than the width of Baltimore groove [C1, C2], highly is about 2h/3; 4 through holes [10] on the convex lid [8] match with the screw [3] of 4 M3 of the last end of matrix [1], realize that by nut convex lid [8] and matrix [1] are fixing.
2, according to the joint between the described a kind of high-temperature superconductive magnet double-cake coils of claim 1, it is characterized in that between two Baltimore grooves [C1, C2] " partition wall " being arranged, the thickness of " partition wall " equates with the thickness of assembling insulation spacer between two double-cake coils [D1, D2] during magnet; Interposition at " partition wall " is equipped with a breach that connects two Baltimore grooves [C1, C2], is the lead-over groove [4] of NbTi bridge [7] between two Baltimore grooves [C1, C2], and its width is advisable can embed NbTi bridge [7] smoothly; Have a plurality of through holes [5] to be used to place heater on Baltimore groove [C1, C2] direction, the size of through hole [5] and number be by the decision of the heater that adopted, is advisable with heated coupling faster; A small through hole [6] laying temperature probe, the aperture of two kinds of through holes [5,6] is big slightly than heater and temp probe, can be inserted as suitable smoothly with heater and temp probe; Matrix [1] the fixedly fixing threaded hole [3] of counter sink [2] and convex lid [8] and matrix [1] of matrix [1] radially arranged.
3, according to the joint between the described high-temperature superconductive magnet double-cake coils of claim 1, it is characterized in that NbTi bridge [7] processes with the NbTi line, intercept one section NbTi line, serpentine of folding is curved in the centre position, then from an end of NbTi bridge [7], embed Baltimore groove [C1], transition breach [4] and the Baltimore groove [C2] of spill matrix [1] successively, cut the part that grows matrix [1].
4,, it is characterized in that NbTi bridge 7 also can adopt the NbTi bandlet in other cross section according to the joint between claim 1 or 2 described a kind of high-temperature superconductive magnet double-cake coils; When the operating temperature of magnet is higher than 10K, also can remove NbTi bridge 7.
5, application rights requires the welding method of the joint between 1 described high-temperature superconductive magnet double-cake coils, it is characterized in that sequence of process steps is as follows:
(1) clean: each parts of each double-cake coils tap and joint are clean with gauze, alcohol wipe;
(2) matrix [1] location is with fixing: spill matrix [1] is embedded in the Baltimore groove [C1, C2] that processes in advance on the peripheral buttress brace of magnet, this Baltimore groove cooperates processing with spill matrix [1], with countersunk head nut [13] the peripheral buttress brace of matrix [1] and magnet is fixed, and the bottom surface that guarantees matrix [1], Baltimore groove [C1, C2] and buttress brace surface be on one side, weld the superconduction band tap [11,12] of two adjacent double-cake coils [D1, D2] and pass through Baltimore groove [C1, C2] respectively after stretching;
(3) place strip of tin foil [14-1]: behind the two-sided scaling powder phosphoric acid of evenly coating 10%-15% of the strip of tin foil that cuts [14-1], the surface tension of support phosphoric acid,diluted is close to tin-foil plate 14-1 on the bottom surface of Baltimore groove [C1];
(4) place superconduction band tap [11]: Baltimore groove [C1] is put in the following tap [11] of double-cake coils [D1], and gently hauls the afterbody of tap [11] with have gentle hands, makes the superconduction zone face be close to the tin sheet [14-1] of bottom land;
(5) place strip of tin foil [14-2]: repeat (3) and also strip of tin foil [14-2] is attached on the superconduction zone face of bottom land;
(6) according to step (3)～(5) the last tap [12] of double-cake coils [D2] and tin-foil plate [15-1] and [15-2] are positioned in the Baltimore groove [C2];
(7) embed NbTi bridge [7]: the A of end embedding matrix [1] holds in the Baltimore groove [C1] and is close to the interior strip of tin foil [14-2] of groove, the curved transition breach [4] that embeds between two Baltimore grooves of serpentine, the other end embed in the groove [C2] of matrix [1B] end and are close to strip of tin foil [15-2] in the groove;
(8) place strip of tin foil [14-3] and [15-3]: repetition (3), in groove [C1, C2], settle strip of tin foil [14-3] and [15-3] respectively, and they are attached on the NbTi bridge [7] in the groove;
(9) location of convex lid [8] is with fixing: the convex beam [9] that convex is covered [8] snaps in the Baltimore groove [C1], and the A of four through holes [10] and matrix [1] four screws of end [3] are aligned, strain with handgrip double-cake coils [D1] tap [11], tighten convex lid [8] with screw [16] appropriateness, make closely contact between many duplexers in convex beam [9] and the groove [C1];
(10) use fixedly convex lid [17] of the method identical with (9);
(11) place heater and temp probe: 6 heaters and temp probe are inserted respectively in the bottoming hole [5] and temp probe hole [6] on the matrix [1];
(12) temperature control heating: utilize slow intensification of temperature control heating device and temperature control at 185 ℃, when the port for the treatment of Baltimore groove [C1, C2] has scolding tin to overflow, strain the afterbody of superconduction band tap [11,12] simultaneously, tighten the fixed screw [16] of convex lid [8,17], extrude unnecessary scolding tin, stop heating then, remove heater and temp probe;
(13) prune and clean: cut the afterbody of tap [11,12] after the cooling, handle the scolding tin that overflows, wipe scaling powder phosphoric acid with alcohol.So far finish the welding of a joint, adopt above-mentioned steps to finish the welding of other joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100985588A CN101075496B (en) | 2007-04-20 | 2007-04-20 | Connector between high-temperature superconductive magnet double-cake coils and its welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100985588A CN101075496B (en) | 2007-04-20 | 2007-04-20 | Connector between high-temperature superconductive magnet double-cake coils and its welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101075496A true CN101075496A (en) | 2007-11-21 |
| CN101075496B CN101075496B (en) | 2010-12-08 |
Family
ID=38976455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100985588A Expired - Fee Related CN101075496B (en) | 2007-04-20 | 2007-04-20 | Connector between high-temperature superconductive magnet double-cake coils and its welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101075496B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078994A (en) * | 2010-11-23 | 2011-06-01 | 合肥科烨电物理设备制造有限公司 | Tin soldering heater for superconducting conductor joint |
| CN102779605A (en) * | 2011-05-12 | 2012-11-14 | 上海联影医疗科技有限公司 | Superconducting joint for superconducting magnet of magnetic resonance imaging system |
| CN104037581A (en) * | 2014-05-22 | 2014-09-10 | 中国科学院电工研究所 | Fabrication device of high-temperature superconducting-band circular arc joint |
| CN104036914A (en) * | 2014-05-22 | 2014-09-10 | 中国科学院电工研究所 | Manufacturing method for high-temperature superconductivity strip connector of high-temperature superconductivity double-pancake coils |
| CN104733151A (en) * | 2013-12-20 | 2015-06-24 | 通用电气公司 | Device and method for storing superconductor leads and superconducting magnet system using device |
| CN105593954A (en) * | 2013-10-04 | 2016-05-18 | 布鲁克碧奥斯平有限公司 | Magnetic coil assembly, comprising an HTSL strip conductor and an LTS wire, which form a joint |
| CN105583485A (en) * | 2016-01-26 | 2016-05-18 | 中国科学院电工研究所 | Welding device and welding method for high-temperature superconducting tape connector |
| CN109102987A (en) * | 2018-07-16 | 2018-12-28 | 中国科学院合肥物质科学研究院 | Layer-across connecting structure between a kind of adjacent cake of high-temperature superconductive magnet double-cake coils |
| CN109786063A (en) * | 2019-01-07 | 2019-05-21 | 中国科学院合肥物质科学研究院 | Superconducting coil joint connection in a kind of superconductive current limiter |
| CN113744993A (en) * | 2021-08-30 | 2021-12-03 | 中国科学院合肥物质科学研究院 | Winding forming device and method for kA-level large-current-carrying high-temperature superconducting double-pancake coil |
| CN114937539A (en) * | 2022-06-07 | 2022-08-23 | 合肥国际应用超导中心 | REBCO high-temperature superconducting coil inner joint, welding device and preparation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU653983B2 (en) * | 1991-02-25 | 1994-10-20 | Sumitomo Electric Industries, Ltd. | Junction between wires employing oxide superconductors and joining method therefor |
| US5290638A (en) * | 1992-07-24 | 1994-03-01 | Massachusetts Institute Of Technology | Superconducting joint with niobium-tin |
| US5255837A (en) * | 1992-08-03 | 1993-10-26 | General Electric Company | Coil leap lap joint for superconducting magnet |
| US5253413A (en) * | 1993-01-04 | 1993-10-19 | General Electric Company | Method for making a superconducting joint for a superconducting magnet which images human limbs |
-
2007
- 2007-04-20 CN CN2007100985588A patent/CN101075496B/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078994B (en) * | 2010-11-23 | 2013-05-22 | 合肥科烨电物理设备制造有限公司 | Tin soldering heater for superconducting conductor joint |
| CN102078994A (en) * | 2010-11-23 | 2011-06-01 | 合肥科烨电物理设备制造有限公司 | Tin soldering heater for superconducting conductor joint |
| CN102779605A (en) * | 2011-05-12 | 2012-11-14 | 上海联影医疗科技有限公司 | Superconducting joint for superconducting magnet of magnetic resonance imaging system |
| CN102779605B (en) * | 2011-05-12 | 2014-11-19 | 上海联影医疗科技有限公司 | Superconducting joint for superconducting magnet of magnetic resonance imaging system |
| CN105593954B (en) * | 2013-10-04 | 2017-09-15 | 布鲁克碧奥斯平有限公司 | Including constituting the HTSL tape conductors of joint and the magnet exciting coil device of LTS metal wires |
| US10241168B2 (en) | 2013-10-04 | 2019-03-26 | Bruker Biospin Gmbh | Magnet coil assembly, comprising an HTS strip conductor and an LTS wire, which form a joint |
| CN105593954A (en) * | 2013-10-04 | 2016-05-18 | 布鲁克碧奥斯平有限公司 | Magnetic coil assembly, comprising an HTSL strip conductor and an LTS wire, which form a joint |
| CN104733151A (en) * | 2013-12-20 | 2015-06-24 | 通用电气公司 | Device and method for storing superconductor leads and superconducting magnet system using device |
| CN104036914A (en) * | 2014-05-22 | 2014-09-10 | 中国科学院电工研究所 | Manufacturing method for high-temperature superconductivity strip connector of high-temperature superconductivity double-pancake coils |
| CN104036914B (en) * | 2014-05-22 | 2016-07-06 | 中国科学院电工研究所 | The high-temperature superconductor band joint preparation method of high-temperature superconductor double-cake coils |
| CN104037581A (en) * | 2014-05-22 | 2014-09-10 | 中国科学院电工研究所 | Fabrication device of high-temperature superconducting-band circular arc joint |
| CN105583485A (en) * | 2016-01-26 | 2016-05-18 | 中国科学院电工研究所 | Welding device and welding method for high-temperature superconducting tape connector |
| CN109102987A (en) * | 2018-07-16 | 2018-12-28 | 中国科学院合肥物质科学研究院 | Layer-across connecting structure between a kind of adjacent cake of high-temperature superconductive magnet double-cake coils |
| CN109786063A (en) * | 2019-01-07 | 2019-05-21 | 中国科学院合肥物质科学研究院 | Superconducting coil joint connection in a kind of superconductive current limiter |
| CN109786063B (en) * | 2019-01-07 | 2021-01-12 | 中国科学院合肥物质科学研究院 | Superconducting coil joint connecting device in superconducting current limiter |
| CN113744993A (en) * | 2021-08-30 | 2021-12-03 | 中国科学院合肥物质科学研究院 | Winding forming device and method for kA-level large-current-carrying high-temperature superconducting double-pancake coil |
| CN113744993B (en) * | 2021-08-30 | 2022-06-28 | 中国科学院合肥物质科学研究院 | Winding forming device and method for kA-level large-current-carrying high-temperature superconducting double-pancake coil |
| CN114937539A (en) * | 2022-06-07 | 2022-08-23 | 合肥国际应用超导中心 | REBCO high-temperature superconducting coil inner joint, welding device and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101075496B (en) | 2010-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101075496A (en) | Connector between high-temperature superconductive magnet double-cake coils and its welding method | |
| US10943712B2 (en) | Superconducting cables and methods of making the same | |
| Vase et al. | Current status of high-Tc wire | |
| CN1010067B (en) | Method for manufacturing radiating device and using it production radiator | |
| JP5005582B2 (en) | Superconducting current lead manufacturing method | |
| CN103918149B (en) | Current feed | |
| CN104036914B (en) | The high-temperature superconductor band joint preparation method of high-temperature superconductor double-cake coils | |
| EP2257953B1 (en) | Interface device and junction box for a htsc degaussing coil | |
| JP5115778B2 (en) | Superconducting cable | |
| CN1604417A (en) | Jointing structure and jointing method for superconducting cable | |
| CN109285647B (en) | liquid helium soaking type low-temperature superconducting assembly for large-current high-temperature superconducting current lead | |
| CN208262072U (en) | A kind of welder of high-temperature superconductor band connector | |
| CN101587767A (en) | Current lead structure of recondensed superconducting magnet | |
| CN108453361A (en) | A kind of welder and its welding method of high-temperature superconductor band connector | |
| CN101183592A (en) | Two-sided immersion superconducting solenoid coil | |
| US20070144765A1 (en) | Power supply line for cryogenic electrical systems | |
| JPH1167523A (en) | Connecting method of oxide superconductive wire rod oxide superconductor coil and superconductive device using the same | |
| CN107552912B (en) | High-temperature superconducting strip and copper terminal counter weight self-compaction tin welding device and welding method | |
| KR100498972B1 (en) | High temperature superconducting cable and process for manufacturing the same | |
| RU2702616C1 (en) | Method of making electrical contact connection | |
| EP1188167B1 (en) | Methods for joining high temperature superconducting components in a superconducting cable with negligible critical current degradation and articles of manufacture in accordance therewith | |
| CN1154118C (en) | High temp. superconducting cable and process for manufacturing the same | |
| KR102580374B1 (en) | Hybrid joint assembly of low temperature superconducting conduit conductor and high temperature superconducting conduit conductor, hybrid joint method low temperature superconducting conduit conductor and high temperature superconducting conduit conductor, and extension method of low temperature superconducting conduit conductor and high temperature superconducting conduit conductor therefor | |
| KR20120092077A (en) | Composite with coated conductor | |
| CN111570959B (en) | Superconducting strip joint welding device and welding method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20160420 |