CN116493695A - Long superconducting joint welding device based on brazing technology - Google Patents
Long superconducting joint welding device based on brazing technology Download PDFInfo
- Publication number
- CN116493695A CN116493695A CN202310550814.1A CN202310550814A CN116493695A CN 116493695 A CN116493695 A CN 116493695A CN 202310550814 A CN202310550814 A CN 202310550814A CN 116493695 A CN116493695 A CN 116493695A
- Authority
- CN
- China
- Prior art keywords
- joint
- support frame
- superconducting
- welding
- fixed
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 56
- 238000005219 brazing Methods 0.000 title claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000004677 Nylon Substances 0.000 claims abstract description 24
- 229920001778 nylon Polymers 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 238000005476 soldering Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 241000954177 Bangana ariza Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a long superconducting joint welding device based on a brazing technology, which comprises a guide rail, a front support frame, a middle support frame, a tail end support seat, an upper nylon roller, a lower nylon roller, a rear support frame, a central support shaft, a joint framework, a fastening nut, a three-jaw chuck, an electric soldering iron welding head, a constant pressure spring and a welding head fixing seat. When the long superconducting joint is welded, the head and the tail of the superconducting tape which is uniformly tin-coated are respectively fixed on the joint framework and the tail support seat. Starting a power supply, heating the electric soldering iron welding head to 180-280 ℃, and driving the joint framework to rotate at a speed of 0.5-3 mm/s by the central support shaft. With the increase of the welding length of the superconducting joint, the front support frame and the middle support frame move on the guide rail at the speed of 0.5-3 mm/s, the moving displacement is the same as the length of the superconducting tape welded into the joint, and the tension is kept on the superconducting tape. As the number of layers of superconducting joint wound in a coil shape increases, the constant-pressure spring contracts until welded to the set joint length.
Description
Technical Field
The present invention relates to a long superconducting joint welding device for a superconducting magnet.
Background
With the development and maturity of superconducting technology, REBa is used for 2 Cu 3 O 7-x (REBCO)) coated conductors are becoming more and more of a concern in the development and application of high temperature superconducting magnets in nuclear magnetic resonance instruments, high field magnets, high energy particle accelerators, industrial equipment, and the like. For various applications, long lengths of REBCO coated conductors are required. However, the maximum length of the REBCO coated conductor is about 1km at present, and the requirements of the application cannot be met. Therefore, it is necessary to connect REBCO coated conductors. Particularly in continuous current mode, such as Nuclear Magnetic Resonance (NMR) and Magnetic Resonance Imaging (MRI), require about 10 -12 Omega joint resistance.
The most common welding process for superconducting joints today is brazing, i.e. welding REBCO tapes together using In or In-Sn as the solder. The brazing process has the advantages of no need of special environment, easy welding, low cost and the like; however, since brazing does not fully form a metallurgical bond at the interface, there is an effect of contact resistance and the resistance of the braze joint is generally relatively high. Therefore, it is necessary to reduce the joint resistance by increasing the contact area of the joint by increasing the joint length. At present, the welding process of the long superconducting joint is to uniformly hang solder on the surface of the superconducting tape, then use an electric soldering iron to perform spot heating, wind the superconducting tape while heating, and wind the long superconducting joint into a coil shape. The welding process not only needs one person to heat the point by using an electric soldering iron, but also needs one person to tighten the superconducting belt to apply pressure. Therefore, the process is extremely long in time and labor-consuming, and the effective contact area of the joint is reduced due to the fact that the welding pressure at each part of the long superconducting joint is the same.
Disclosure of Invention
The invention aims to overcome the defect of the existing long superconducting joint welding method and provides a welding device of a long superconducting joint based on a brazing technology. The superconductive tapes used in the superconductive joint to be welded are divided into a face surface and a back surface, and the face surfaces of the two superconductive tapes are welded during welding. And the welding pressure of each part of the long superconducting joint is the same by using a constant pressure spring. In the welding process, when the superconducting tape is welded into a joint and wound into a coil shape, the unwelded superconducting tape can move on the guide rail, and the moving displacement is the same as the length of the superconducting tape welded into the joint, so that the tension on the superconducting tape is unchanged. Simultaneously, the face surfaces of the upper and lower superconducting belts are tightly contacted by using the upper nylon roller and the lower nylon roller. Therefore, compared with the current long superconducting joint welding method, the method has the characteristics of uniform forming and better metallurgical bonding, and ensures that the welding pressure of each part of the long superconducting joint is the same, thereby increasing the effective contact area of the joint and preparing the superconducting joint with extremely low resistivity. In addition, the invention has high production efficiency, can realize automation, can precisely control the technological parameters and the technological process, and has stable technological performance.
The superconducting joint welding device comprises a guide rail, a front support frame, a middle support frame, a tail end support seat, an upper nylon roller, a lower nylon roller, a rear support frame, a central support shaft, a joint framework, a fastening nut, a three-jaw chuck, an electric soldering iron welding head, a constant pressure spring and a welding head fixing seat.
The front support frame is fixed with the tail end support seat, the upper nylon roller and the lower nylon roller are fixed with the middle support frame, the upper nylon roller and the lower nylon roller enable the face surfaces of the upper superconducting tape and the lower superconducting tape to be in close contact, and the rear support frame is fixed with the three-jaw chuck. The front support frame, the middle support frame and the rear support frame are all fixed on the guide rail, but the front support frame and the middle support frame can move on the guide rail, and the rear support frame can not move on the guide rail. The constant-pressure spring is fixed on the welding head fixing seat, the electric soldering iron welding head and the constant-pressure spring are fixed together, the electric soldering iron welding head is tightly attached to the surface of the superconducting tape, and the constant-pressure spring contracts along with the increase of the number of layers of the superconducting joint wound into a coil shape in the welding process. The central support shaft is fixed on the three-jaw chuck, the joint framework is sleeved on the central support shaft, and the fastening nut is used for fixing the joint framework.
The tail part of the superconducting tape used for the superconducting joint to be welded is fixed on the tail end supporting seat, and the head part of the superconducting tape is fixed on the joint framework by using an adhesive tape.
When the long superconducting joint is welded, the head and the tail of the superconducting tape which is uniformly tin-coated are respectively fixed on the joint framework and the tail support seat. Starting a power supply, heating the electric soldering iron welding head to 180-280 ℃, and driving the joint framework to rotate at a speed of 0.5-3 mm/s by the central support shaft. With the increase of the welding length of the superconducting joint, the front support frame and the middle support frame move on the guide rail at the speed of 0.5-3 mm/s, the moving displacement is the same as the length of the superconducting tape welded into the joint, and the tension is kept on the superconducting tape. As the number of layers of superconducting joint wound in a coil shape increases, the constant-pressure spring contracts until welded to the set joint length.
Drawings
Fig. 1 is a schematic structural diagram of a long superconducting joint welding device based on a brazing technology.
Fig. 2 is an enlarged view of the structure of the portion a in fig. 1.
Fig. 3 is an exploded view of the welded part assembly.
In the figure: the welding head comprises a guide rail 1, a front support frame 2, a middle support frame 3, a tail end support seat 4, an upper nylon roller 5, a lower nylon roller 6, a superconducting tape 7, a rear support frame 8, a central support shaft 9, a joint skeleton 10, a fastening nut 11, a three-jaw chuck 12, an electric soldering iron welding head 13, a constant pressure spring 14 and a welding head fixing seat 15.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
As shown in fig. 1, 2 and 3, the superconducting joint welding device of the invention comprises a guide rail 1, a front support frame 2, a middle support frame 3, a tail end support seat 4, an upper nylon roller 5, a lower nylon roller 6, a rear support frame 8, a central support shaft 9, a joint framework 10, a fastening nut 11, a three-jaw chuck 12, an electric soldering iron welding head 13, a constant pressure spring 14 and a welding head fixing seat 15.
The front support frame is fixed with the tail end support seat, the upper nylon roller and the lower nylon roller are fixed with the middle support frame, the upper nylon roller and the lower nylon roller enable the face surfaces of the upper superconducting tape and the lower superconducting tape to be in close contact, and the rear support frame is fixed with the three-jaw chuck. The front support frame, the middle support frame and the rear support frame are all fixed on the guide rail, but the front support frame and the middle support frame can move on the guide rail, and the rear support frame can not move on the guide rail. The constant-pressure spring is fixed on the welding head fixing seat, the electric soldering iron welding head and the constant-pressure spring are fixed together, the electric soldering iron welding head is tightly attached to the surface of the superconducting tape, and the constant-pressure spring contracts along with the increase of the number of layers of the superconducting joint wound into a coil shape in the welding process. The central support shaft is fixed on the three-jaw chuck, the joint framework is sleeved on the central support shaft, and the fastening nut is used for fixing the joint framework.
The superconductive tape used for the superconductive joint to be welded is divided into a face surface and a back surface, and the face surface is welded during welding. The tail of the superconducting tape is fixed on the tail end supporting seat, and the head of the superconducting tape is fixed on the joint framework by using an adhesive tape.
When the long superconducting joint is welded, the head and the tail of the superconducting tape which is uniformly tin-coated are respectively fixed on the joint framework and the tail support seat. Starting a power supply, heating the electric soldering iron welding head to 180-280 ℃, and driving the joint framework to rotate at a speed of 0.5-3 mm/s by the central support shaft. With the increase of the welding length of the superconducting joint, the front support frame and the middle support frame move on the guide rail at the speed of 0.5-3 mm/s, the moving displacement is the same as the length of the superconducting tape welded into the joint, and the tension is kept on the superconducting tape. As the number of layers of superconducting joint wound in a coil shape increases, the constant-pressure spring contracts until welded to the set joint length.
Claims (3)
1. The long superconducting joint welding device based on the brazing technology is characterized by comprising a guide rail (1), a front support frame (2), a middle support frame (3), a tail end support seat (4), an upper nylon roller (5), a lower nylon roller (6), a rear support frame (8), a central support shaft (9), a joint framework (10), a fastening nut (11), a three-jaw chuck (12), an electric soldering iron welding head (13), a constant pressure spring (14) and a welding head fixing seat (15);
the front support frame (2) is fixed with the tail end support seat (4), the upper nylon roller (5) and the lower nylon roller (6) are fixed with the middle support frame (3), the upper nylon roller (5) and the lower nylon roller (6) enable the face surfaces of the upper superconducting tape and the lower superconducting tape to be in close contact, and the rear support frame (8) is connected with the three-jaw chuck (12); the front support frame (2), the middle support frame (3) and the rear support frame (8) are all fixed on the guide rail (1), but the front support frame (2) and the middle support frame (3) can move on the guide rail (1), and the rear support frame (8) can not move on the guide rail (1); the constant-pressure spring (14) is fixed on the welding head fixing seat (15), the electric soldering iron welding head (13) and the constant-pressure spring (14) are fixed together, and the electric soldering iron welding head (13) is tightly attached to the surface of the superconducting tape (7); during the welding process, the constant-pressure spring (14) contracts as the number of layers of the superconducting joint wound in a coil shape increases; the central support shaft (9) is fixed on the three-jaw chuck (12), the joint framework (10) is sleeved on the central support shaft (9), and the fastening nut (11) is used for fixing the joint framework (10).
2. A superconducting joint welding apparatus according to claim 1, wherein the tail part of a superconducting tape (7) for a superconducting joint to be welded is fixed to the tail end support base (4), and the head part of the superconducting tape is fixed to the intermediate joint skeleton (10) with an adhesive tape.
3. The superconducting joint welding device according to claim 1, wherein when welding a long superconducting joint, the superconducting tape (7) uniformly tin-coated is fixed on the joint skeleton (10) and the tail end supporting seat (4) at the head and the tail respectively; starting a power supply, heating an electric soldering iron welding head (13) to 180-280 ℃, and driving a joint framework (10) to rotate at a speed of 0.5-3 mm/s by a central supporting shaft (9); along with the increase of the welding length of the superconducting joint, the front support frame (2) and the middle support frame (3) move on the guide rail (1) at the speed of 0.5-3 mm/s, the moving displacement is the same as the length of the superconducting belt welded into the joint, and the tension is kept on the superconducting belt (7); as the number of layers of superconducting joint wound in a coil shape increases, the constant-pressure spring (14) contracts until welded to the set joint length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310550814.1A CN116493695A (en) | 2023-05-16 | 2023-05-16 | Long superconducting joint welding device based on brazing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310550814.1A CN116493695A (en) | 2023-05-16 | 2023-05-16 | Long superconducting joint welding device based on brazing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116493695A true CN116493695A (en) | 2023-07-28 |
Family
ID=87322971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310550814.1A Pending CN116493695A (en) | 2023-05-16 | 2023-05-16 | Long superconducting joint welding device based on brazing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116493695A (en) |
-
2023
- 2023-05-16 CN CN202310550814.1A patent/CN116493695A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106112166B (en) | The automated system and implementation method of metalwork and coaxial cable welding | |
| JP3771947B2 (en) | Magnet assembly of superconducting magnetic resonance imaging system | |
| CN107799917B (en) | A kind of the low resistance connection device and its manufacturing method of REBCO high-temperature superconductor band | |
| US3619479A (en) | Electrical conductor of electrically normal conducting metal and superconducting material | |
| CN208262072U (en) | A kind of welder of high-temperature superconductor band connector | |
| CN116493695A (en) | Long superconducting joint welding device based on brazing technology | |
| US5126527A (en) | High temperature solder device for flat cables | |
| CN108453361A (en) | A kind of welder and its welding method of high-temperature superconductor band connector | |
| CN109560439A (en) | A kind of preparation method of high-temperature superconductor belt lacing | |
| CN111570959B (en) | Superconducting strip joint welding device and welding method | |
| CN100475403C (en) | Superconductive current lead welding method | |
| JP2013069664A (en) | Superconductive current lead and superconducting magnet device using superconductive current lead | |
| CN108526640A (en) | A kind of high-temperature superconductor band weld device | |
| CN116110675B (en) | Quick-installation excitation closed-loop system for liquid helium-free MRI superconducting magnet | |
| CN214898010U (en) | Photovoltaic high-power double-wire parallel winding flat coil | |
| CN220491682U (en) | Joint structure of current lead and magnet coil | |
| Xiong et al. | Study of Welding Joint Resistance of REBCO Wires for High Temperature Superconducting Magnet | |
| CN220943657U (en) | Friction welding device | |
| CN117316619A (en) | Welding and winding integrated high-temperature superconducting coil winding device and joint welding method thereof | |
| JP6392028B2 (en) | Superconducting electromagnet | |
| JP5697162B2 (en) | Current lead | |
| CN217485182U (en) | Superconducting coil without excitation power supply | |
| JPH0590022A (en) | Superconducting magnet system | |
| Green | The calculated and measured resistance for splices between conductors in a MICE superconducting coil | |
| JP6569959B2 (en) | High temperature superconducting wire connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |