CN101807464A - Magnet MgB2 wire strip insulating device and method - Google Patents
Magnet MgB2 wire strip insulating device and method Download PDFInfo
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- CN101807464A CN101807464A CN201010137325A CN201010137325A CN101807464A CN 101807464 A CN101807464 A CN 101807464A CN 201010137325 A CN201010137325 A CN 201010137325A CN 201010137325 A CN201010137325 A CN 201010137325A CN 101807464 A CN101807464 A CN 101807464A
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- 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
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Abstract
The invention discloses a magnet MgB2 wire strip insulating device and method. The device comprises a thermal treatment furnace the middle of which is provided with a furnace tube, a painting device which is arranged between the inlet of the furnace tube and a strip releasing wheel, the strip releasing wheel and a strip take up wheel, a variable frequency motor driving the strip take up wheel to rotate and a guide wheel arranged at the outside of the outlet of the furnace tube; wherein the painting device comprises a paint box, a coating device and a paint box guide wheel arranged above the coating device. The insulating method includes the steps that: 1, wire strip is wound; 2, the furnace body is heated; 3, dynamic continuous painting insulating is carried out on the wire strip to be treated, and the running speed of wire strip to be treated is controlled to be in certain range by adjusting the rotating speed of the variable frequency motor in the treatment process. The invention has reasonable structure design, simple operation and good use effect and uniform insulating layer and is applicable to batch production, and speed of releasing and taking up wire can be regulated according to requirement in insulating treatment, and continuous uniform painting insulating of MgB2 superconductivity long wire strip in kilometre can be realized.
Description
Technical field
The present invention relates to a kind of wire strip with insulating device and corresponding insulation method, especially relate to a kind of magnet MgB
2The insulating device of wire strip and method.
Background technology
The MgB that calendar year 2001 is found
2The critical temperature of superconductor only is 39K, but different with oxide high temperature superconductor, MgB
2Have foolproof chemical composition and crystal structure, the cost of material is low, and the very high electric current of crystal boundary energy carrying.While MgB
2Coherence length bigger than the coherence length of the oxide of perovskite structure, this just means MgB
2In be easier to introduce useful flux pinning center, improve superconductivity.Over the past two years, since the concentrated input of domestic and international research effort, MgB
2The performance of superconductor is improved rapidly, and cost performance is substantially near the level of NbTi.
High J
cLong wire strip be MgB
2The basis that the superconductor magnet is used, so MgB
2The superconducting line strips technology of preparing is at present domestic and international superconductor research and development focus.MgB
2The main direction of the Study on Preparation Technology of becoming a useful person is that exploitation can obtain to have the split conductor band technology of preparing that practicability is worth.At present, MgB
2The preparation of wire strip has remarkable progress.MgB
2The main application fields of wire strip is the superconducting magnet manufacturing.Though present MgB
2The performance of wire strip satisfies the magnet applications requirement substantially, but owing to the research and development time is shorter, MgB
2A lot of combination properties of wire strip and corresponding technology of preparing are still needed perfect, and the manufacturing of superconducting magnet is to MgB
2The wire strip insulation has just proposed requirement.Superconducting magnet resistance when operate as normal is zero, do not need at this moment to insulate, but when the superconducting magnet quench or when discharging and recharging, the superconducting magnet two ends can produce a transient pulse voltage, therefore in order to guarantee the stability of superconducting magnet, superconducting magnet and superconducting line strips need insulate.
At present, the open both at home and abroad MgB that reports
2The basic manual mode that coats of polyimide film that adopts of wire strip insulation is finished.This method inefficiency, and be difficult to guarantee that polyimide film evenly is coated on MgB
2On the wire strip, it is inhomogeneous to cause coating back wire strip size, is easy to produce the dimensional discrepancy greater than more than the 1mm, has a strong impact on the uniformity of magnetic field of preparation magnet.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, provide a kind of simple and compact for structure, reasonable in design, the processing and fabricating cost is low, install and lay convenient and use magnet MgB easy and simple to handle, that result of use is good
2The insulating device of wire strip.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of magnet MgB
2The insulating device of wire strip is characterized in that: comprise the middle part heat-treatment furnace of boiler tube is housed, to pending MgB
2The device for painting that the outer surface of wire strip is evenly painted, match and use and pending MgB
2Wire strip is tightened the back and is put belt wheel and take-up pulley, drives the variable-frequency motor that take-up pulley rotates and be laid in directive wheel outside the boiler tube outlet with boiler tube inside is pulled through continuously from device for painting is inner, and described device for painting is laid in the inlet of boiler tube and puts between the belt wheel; Described device for painting comprises the lacquer box, be arranged on the lacquer box and communicate with the paint bath at lacquer box middle part and from both sides up and down to pending MgB
2The application device that wire strip is evenly painted and be laid in the application device oblique upper and to pending MgB
2The lacquer box guide wheel that wire strip leads, described belt wheel, lacquer box guide wheel, directive wheel and the take-up pulley put is laid on the same perpendicular successively from left to right or from right to left, and puts the pending MgB after tightening between belt wheel and take-up pulley
2Wire strip is successively walked around with directive wheel from lacquer box guide wheel; Described application device is corresponding with the position of lacquer box guide wheel, described application device be provided with the position relative up and down two be coated with and wipe one's face, and pending MgB
2The upper and lower surface of wire strip respectively with application device up and down two be coated with to wipe one's face and contact, application device up and down two be coated with and form pending MgB between wiping one's face
2The japanning mouth that wire strip is evenly painted.
Described lacquer box guide wheel is positioned at the oblique below of putting belt wheel, and directive wheel is positioned at the oblique upper of lacquer box guide wheel, and puts the pending MgB after tightening between belt wheel and take-up pulley
2Wire strip be shaped as zigzag; Described heat-treatment furnace is and is tilted to laying, and boiler tube is coaxial to be installed in heat-treatment furnace inside, and pending MgB between the angle of inclination of heat-treatment furnace and lacquer box guide wheel and directive wheel
2The angle of inclination unanimity of wire strip; Described application device up and down two be coated with to wipe one's face all to be and be tilted to laying, described be coated with the angle of inclination of wiping one's face and put belt wheel and lacquer box guide wheel between pending MgB
2The angle of inclination unanimity of wire strip, and described to be coated with the incline direction of wiping one's face consistent with the tangential direction of lacquer box guide wheel.
Described pending MgB
2Wire strip is successively walked around from the bottom of lacquer box guide wheel and the top of directive wheel, and pending MgB
2Wire strip is pulled through continuously from boiler tube inside from the bottom to top.
Described heat-treatment furnace and device for painting carry out support fixation by bracing frame and brace table respectively.
The wiping one's face last tiling that is coated with of described application device has one deck felt platform.
The described angle of inclination of wiping one's face that is coated with is 20 ± 5 °.
Described device for painting comprises that also two are symmetricly set on the supporting seat of the described paint bath left and right sides and are installed on two installation shaft between the supporting seat, and described lacquer box guide wheel coaxial package is connected by bearing between the middle part of described installation shaft and lacquer box guide wheel and described installation shaft.
Simultaneously, the present invention also provides a kind of simple, favorable repeatability and has had good engineering practical value, the effective magnet MgB of japanning insulation processing
2The insulating treatment method of wire strip is characterized in that this method may further comprise the steps:
301, the rotating speed of variable-frequency motor is determined: according to pending MgB
2Wire strip between speed of service V, variable-frequency motor and the take-up pulley put between belt wheel and take-up pulley gearratio and the diameter of take-up pulley, the rotating speed of variable-frequency motor is estimated; In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip is controlled between 150 ± 10m/h;
302, the speed setting of variable-frequency motor:, set the rotating speed of variable-frequency motor according to the tachometer value of the variable-frequency motor that is estimated in the step 301;
303, start variable-frequency motor, and after variable-frequency motor starts, drive that take-up pulley rotates and pending MgB
2The belt wheel rotation was put in corresponding drive after wire strip was tightened; Afterwards, at take-up pulley and putting under the mating reaction of belt wheel, and under the guide effect of lacquer box guide wheel and directive wheel, drive pending MgB
2Wire strip is pulled through from the inside of described japanning mouthful and boiler tube continuously with speed of service V, with to pending MgB
2Wire strip carries out dynamically continuous even japanning and oven dry is handled, thereby realizes pending MgB
2The dynamic continuous painting insulation processing process of wire strip;
Dynamically in the continuous painting insulation processing process, by formula V=L/t calculates pending MgB
2The speed of service V of wire strip, L is selected pending MgB in the formula
2The effective use length of wire strip after dynamic continuous painting insulation processing, t is that selected length is the pending MgB of L
2The dynamic continuous painting insulation processing time of wire strip is to guarantee pending MgB
2The speed of service V of wire strip is controlled between 150 ± 10m/h; And, adjust accordingly by rotating speed variable-frequency motor, make pending MgB
2The speed of service V of superconducting line strips is controlled between 150 ± 10m/h.
Put described in the above-mentioned steps one on the wheel shaft of belt wheel tension regulator is installed; Correspondingly, described in the step 303 with pending MgB
2When the belt wheel rotation was put in corresponding drive after wire strip was tightened, also need to be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip is 9.8 ± 1N.
The furnace temperature with heat-treatment furnace described in the above-mentioned steps two rises to before the oven dry treatment temperature, the voltage of heat-treatment furnace should be adjusted into 105 ± 10V and its electric current is adjusted into 5 ± 0.5A; When the furnace temperature of heat-treatment furnace is risen to the oven dry treatment temperature, heat up with the heating rate of 20～40 ℃/min; When the rotating speed to variable-frequency motor described in the step 302 is set, also need frequency with variable-frequency motor be adjusted into 8.1～9.0Hz and its rotating speed is adjusted in the scope of 2～5.5rpm.
The present invention compared with prior art has the following advantages:
1, reasonable in design, installation laying convenience is used easy and simple to handle and cost is low.
2, the scope of application is wide and insulation processing is effective, can realize MgB
2The even continuous painting insulation process of wire strip can evenly apply the random length wire strip, and the thickness of insulating layer after the insulation processing is even, and is suitable for mass production.
3, control is convenient, and in the japanning process, the range of speeds of take-up pulley is easy to adjust, adjusts by the rotating speed (being the rotating speed of take-up pulley) to variable-frequency motor, can easy realization MgB
2The wire strip Trace speed is adjustable, then the thickness of insulating barrier is adjusted, and can be realized that thickness of insulating layer is even.In addition, put the pulley diameters adjustable size, winding bed thickness and variable-width, thereby can adapt to multiple size MgB
2The insulating paint of wire strip is handled.
4, practical value height has changed the mode of operation of artificial mopping in the past, adopts the roll pattern of automatic mopping of roller bearing, and scroll wheel drives MgB
2Wire strip is mopping automatically in the process of motion, the insulating varnish continuous drying, and wire strip insulation speed can reach about 150m/h, and insulation processing efficient improves, and working strength reduces, and is simple, has good practical value.
5, device for painting reasonable in design, lacquer box guide wheel has played the effect of guiding, and has reduced the flexural deformation of band; Felt platform on the lacquer box part can be realized the uniformity of painting.
In sum, reasonable in design of the present invention, easy and simple to handle and result of use good, insulating barrier evenly, be suitable for producing in batches, and carry out MgB
2During the superconducting line strips insulation processing, retractable cable speed can be regulated as required, can realize km magnitude MgB
2The insulation processing process of evenly painting continuously of the long wire strip of superconduction.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the user mode reference diagram of insulating device of the present invention.
Fig. 2 is the structural representation of device for painting of the present invention.
Fig. 3 coats with lacquer the structural representation of box for the present invention.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is that the present invention is to MgB
2Wire strip carries out the method flow diagram of insulation processing.
Description of reference numerals:
The 1-boiler tube; The 2-heat-treatment furnace; The 3-device for painting;
3-1-coats with lacquer box; The 3-2-application device; 3-3-lacquer box guide wheel;
3-4-felt platform; The 3-5-upper cover plate; 4-is put belt wheel;
The 5-take-up pulley; The pending MgB of 7-
2Wire strip; The 8-directive wheel;
The 9-bracing frame; The 10-brace table; The 11-supporting bracket;
The 12-supporting seat; The 13-bearing; The 14-multidiameter;
The 15-installing port.
Embodiment
As Fig. 1, Fig. 2, Fig. 3 and a kind of magnet MgB shown in Figure 4
2The insulating device of wire strip, comprise the middle part heat-treatment furnace 2 of boiler tube 1 is housed, to pending MgB
2The device for painting 3 that the outer surface of wire strip 7 is evenly painted, match and use and pending MgB
2What be pulled through continuously from device for painting 3 inside and boiler tube 1 inside after wire strip 7 is tightened puts belt wheel 4 and take-up pulley 5, drives the variable-frequency motor of take-up pulley 5 rotations and is laid in the directive wheel 8 that boiler tube 1 exports the outside, and described device for painting 3 is laid in the inlet of boiler tube 1 and puts between the belt wheel 4.Described device for painting 3 comprises lacquer box 3-1, be arranged on that lacquer box 3-1 goes up and communicate with the paint bath at lacquer box 3-1 middle part and from both sides up and down to pending MgB
2The application device 3-2 that wire strip 7 is evenly painted and be laid in application device 3-2 oblique upper and to pending MgB
2The lacquer box guide wheel 3-3 that wire strip 7 leads, described belt wheel 4, lacquer box guide wheel 3-3, directive wheel 8 and the take-up pulley 5 put is laid on the same perpendicular successively from left to right or from right to left, and the pending MgB after putting belt wheel 4 and 5 of take-up pulleys and tightening
2Successively box guide wheel 3-3 goes up wire strip 7 and directive wheel 8 is walked around from coating with lacquer.Described application device 3-2 is corresponding with the position of lacquer box guide wheel 3-3, described application device 3-2 be provided with the position relative up and down two be coated with and wipe one's face, and pending MgB
2The upper and lower surface of wire strip 7 respectively with application device 3-2 up and down two be coated with to wipe one's face and contact, application device 3-2 up and down two be coated with and form pending MgB between wiping one's face
2The japanning mouth that wire strip 7 is evenly painted.
In the present embodiment, described lacquer box guide wheel 3-3 is positioned at the oblique below of putting belt wheel 4, and directive wheel 8 is positioned at the oblique upper of lacquer box guide wheel 3-3, and the pending MgB after putting belt wheel 4 and 5 of take-up pulleys and tightening
2 Wire strip 7 be shaped as zigzag.Described heat-treatment furnace 2 is and is tilted to laying, and boiler tube 1 is coaxial to be installed in heat-treatment furnace 2 inside, and the angle of inclination of heat-treatment furnace 2 and lacquer box guide wheel 3-3 and 8 pending MgB of directive wheel
2The angle of inclination unanimity of wire strip 7.Described application device 3-2 up and down two be coated with to wipe one's face all to be and be tilted to laying, described be coated with the angle of inclination of wiping one's face and put belt wheel 4 and lacquer box guide wheel 3-3 between pending MgB
2The angle of inclination unanimity of wire strip 7, and described to be coated with the incline direction of wiping one's face consistent with the tangential direction of lacquer box guide wheel 3-3.Described pending MgB
2Wire strip 7 is successively walked around from the bottom of lacquer box guide wheel 3-3 and the top of directive wheel 8, and pending MgB
2Wire strip 7 is pulled through continuously from boiler tube 1 inside from the bottom to top.In the present embodiment, described belt wheel 4, lacquer box guide wheel 3-3, directive wheel 8 and the take-up pulley 5 put is laid on the same perpendicular successively from right to left.During practical operation, also described belt wheel 4, lacquer box guide wheel 3-3, directive wheel 8 and the take-up pulley 5 put can be laid on the same perpendicular successively from left to right.
Described heat-treatment furnace 2 and device for painting 3 carry out support fixation by bracing frame 9 and brace table 10 respectively.Support frame as described above 9 is a triangular supports, and brace table 10 support platform for being made by angle steel, and support frame as described above 9 and brace table 10 are installed on the supporting bracket 11.Described installation shaft is for preventing to coat with lacquer the multidiameter 14 of box guide wheel 3-3 front and back play, the corresponding installation 15 that offers for end, the front and back installation of multidiameter 14 on the described supporting seat 12.Described device for painting 3 is installed on the brace table 10 by connecting bolt.
The wiping one's face last tiling that is coated with of described application device 3-2 has one deck felt platform 3-4.The described angle of inclination of wiping one's face that is coated with is 20 ± 5 °.Simultaneously, described device for painting 3 comprises that also two are symmetricly set on the supporting seat 12 of the described paint bath left and right sides and are installed on two installation shaft between the supporting seat 12, and described lacquer box guide wheel 3-3 coaxial package is connected by bearing 13 between the middle part of described installation shaft and lacquer box guide wheel 3-3 and described installation shaft.The top spiral-lock of described lacquer box 3-1 has upper cover plate 3-5.
As shown in Figure 5 a kind of to magnet MgB
2Wire strip carries out the method for insulation processing, may further comprise the steps:
301, the rotating speed of variable-frequency motor is determined: according to pending MgB
2Wire strip 7 is estimated the rotating speed of variable-frequency motor at the gearratio of 5 of the speed of service V of putting 5 of belt wheel 4 and take-up pulleys, variable-frequency motor and take-up pulleys and the diameter of take-up pulley 5; In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip 7 is controlled at 150m/h.In the present embodiment, the rotating speed that calculates variable-frequency motor is 3rpm.
302, the speed setting of variable-frequency motor:, set the rotating speed of variable-frequency motor according to the tachometer value of the variable-frequency motor that is estimated in the step 301.Simultaneously, also need the frequency of variable-frequency motor is adjusted into 9.0Hz.
303, start variable-frequency motor, and after variable-frequency motor starts, drive that take-up pulley 5 rotates and pending MgB
2Belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened; Afterwards, at take-up pulley 5 with put under the mating reaction of belt wheel 4, and under the guide effect of lacquer box guide wheel 3-3 and directive wheel 8, drive pending MgB
2 Wire strip 7 is pulled through from the inside of described japanning mouthful and boiler tube 1 continuously with speed of service V, with to pending MgB
2Wire strip 7 carries out dynamically continuous even japanning and oven dry is handled, thereby realizes pending MgB
2The dynamic continuous painting insulation processing process of wire strip 7.In addition, with pending MgB
2When belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened, also need to be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip 7 is 9.8N.
Dynamically in the continuous painting insulation processing process, by formula V=L/t calculates pending MgB
2The speed of service V of wire strip 7, L is selected pending MgB in the formula
2The effective use length of wire strip 7 after dynamic continuous painting insulation processing, t is that selected length is the pending MgB of L
2The dynamic continuous painting insulation processing time of wire strip 7 is to guarantee pending MgB
2The speed of service V of wire strip 7 is controlled at 150m/h.And, adjust accordingly by rotating speed variable-frequency motor, make pending MgB
2The speed of service V of superconducting line strips 7 is controlled at 150m/h.During actual the test, at pending MgB
2Wire strip 7 is in the longitudinal direction every 150m, and recording the cabling time is 1h, and insulation back MgB
2The gauge or diameter of wire scope is φ 1.46～φ 1.48mm, pending MgB in the insulating paint processing procedure
2The Trace speed of wire strip 7 is 150m/h, and the insulating layer thickness scope is 0.01-0.02mm.Subsequently, record pending MgB with megohmmeter
2Wire strip 7 is 2 points end to end of insulated wire, can obtain voltage greater than 500v, shows the MgB after the insulation
2Wire insulation is good, does not have to puncture or the uncoated phenomenon.In the actual use, can be according to pending MgB
2The concrete structure size of superconducting line strips 7 and need treated length are tackled the relevant work parameter of variable-frequency motor and heat-treatment furnace 2 mutually and are adjusted, thereby realize the MgB to random length and size
2Wire strip carries out the purpose of insulation processing.
In the present embodiment, as different from Example 1: the furnace temperature of heat-treatment furnace 2 is risen to the oven dry treatment temperature, and described oven dry treatment temperature is 200 ℃, and when the furnace temperature of heat-treatment furnace 2 risen to the oven dry treatment temperature, heats up with the heating rate of 20 ℃/min.Simultaneously, the furnace temperature of heat-treatment furnace 2 is risen to before the oven dry treatment temperature, the voltage of heat-treatment furnace 2 should be adjusted into 95V and its electric current is adjusted into 4.5A.The frequency of described variable-frequency motor is adjusted into 8.6Hz.With pending MgB
2When belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened, will be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip 7 is 8.8N.In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip 7 is controlled at 140m/h, and the corresponding rotating speed that calculates variable-frequency motor is 2rpm, and all the other steps are all identical with embodiment 1 with technological parameter.
In the present embodiment, as different from Example 1: the furnace temperature of heat-treatment furnace 2 is risen to the oven dry treatment temperature, and described oven dry treatment temperature is 240 ℃, and when the furnace temperature of heat-treatment furnace 2 risen to the oven dry treatment temperature, heats up with the heating rate of 40 ℃/min.Simultaneously, the furnace temperature of heat-treatment furnace 2 is risen to before the oven dry treatment temperature, the voltage of heat-treatment furnace 2 should be adjusted into 110V and its electric current is adjusted into 5.5A.With pending MgB
2When belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened, will be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip 7 is 10.8N.In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip 7 is controlled at 160m/h, and the corresponding rotating speed that calculates variable-frequency motor is 5.5rpm, and all the other steps are all identical with embodiment 1 with technological parameter.
In the present embodiment, as different from Example 1: the furnace temperature of heat-treatment furnace 2 is risen to the oven dry treatment temperature, and described oven dry treatment temperature is 270 ℃, and when the furnace temperature of heat-treatment furnace 2 risen to the oven dry treatment temperature, heats up with the heating rate of 30 ℃/min.Simultaneously, the furnace temperature of heat-treatment furnace 2 is risen to before the oven dry treatment temperature, the voltage of heat-treatment furnace 2 should be adjusted into 108V and its electric current is adjusted into 5.2A.With pending MgB
2When belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened, will be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip 7 is 10.0N.In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip 7 is controlled at 155m/h, and the corresponding rotating speed that calculates variable-frequency motor is 5.0rpm, and all the other steps are all identical with embodiment 1 with technological parameter.
In the present embodiment, as different from Example 1: the furnace temperature of heat-treatment furnace 2 is risen to the oven dry treatment temperature, and described oven dry treatment temperature is 220 ℃, and when the furnace temperature of heat-treatment furnace 2 risen to the oven dry treatment temperature, heats up with the heating rate of 20 ℃/min.Simultaneously, the furnace temperature of heat-treatment furnace 2 is risen to before the oven dry treatment temperature, the voltage of heat-treatment furnace 2 should be adjusted into 102V and its electric current is adjusted into 4.8A.With pending MgB
2When belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened, will be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip 7 is 9.6N.In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip 7 is controlled at 145m/h, and the corresponding rotating speed that calculates variable-frequency motor is 4.0rpm, and all the other steps are all identical with embodiment 1 with technological parameter.
Embodiment 6
In the present embodiment, as different from Example 1: the furnace temperature of heat-treatment furnace 2 is risen to the oven dry treatment temperature, and described oven dry treatment temperature is 210 ℃, and when the furnace temperature of heat-treatment furnace 2 risen to the oven dry treatment temperature, heats up with the heating rate of 30 ℃/min.Simultaneously, the furnace temperature of heat-treatment furnace 2 is risen to before the oven dry treatment temperature, the voltage of heat-treatment furnace 2 should be adjusted into 96V and its electric current is adjusted into 4.6A.With pending MgB
2When belt wheel 4 rotations were put in corresponding drive after wire strip 7 was tightened, will be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip 7 is 9.4N.In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip 7 is controlled at 148m/h, and the corresponding rotating speed that calculates variable-frequency motor is 3.5rpm, and all the other steps are all identical with embodiment 1 with technological parameter.
In the present embodiment, as different from Example 1: described pending MgB
2Wire strip 7 is that 1000m and line directly are the MgB of φ 2.8mm for length
2Wire rod.The frequency of described variable-frequency motor is adjusted into 8.1Hz, and the corresponding rotating speed that calculates variable-frequency motor is 2.5rpm, and is actual in pending MgB
2When the speed of service V of wire strip 7 tests, at pending MgB
2Every 30m, recording the cabling time is 12min on the length direction of wire strip 7, insulation back MgB
2The gauge or diameter of wire scope is φ 2.82-φ 2.84mm, and the insulating layer thickness scope is 0.01-0.02mm.Record processing back MgB with megohmmeter
2Wire rod is 2 points end to end of insulated wire, can obtain voltage greater than 500v, shows the MgB after the insulation
2Wire insulation is good, does not have to puncture or the uncoated phenomenon.All the other steps are all identical with embodiment 1 with technological parameter.
In the present embodiment, as different from Example 1: described pending MgB
2Wire strip 7 is 1000m for length, and thickness is 0.43mm, and bandwidth is the MgB of 3.01-3.02mm
2Band.The frequency of described variable-frequency motor is adjusted into 9.0Hz, and the corresponding rotating speed that calculates variable-frequency motor is 3rpm, and is actual in pending MgB
2When the speed of service V of wire strip 7 tests, at pending MgB
2Wire strip 7 in the longitudinal direction every 150m, recording the cabling time is 1h, insulation back MgB
2The thickness of strip scope is 0.44-0.45mm, and the insulating layer thickness scope is 0.01-0.02mm.Record processing back MgB with megohmmeter
2Band is 2 points end to end of insulated wire, can obtain voltage greater than 500v, shows the MgB after the insulation
2The band insulation is good, does not have to puncture or the uncoated phenomenon.All the other steps are all identical with embodiment 1 with technological parameter.
In the present embodiment, as different from Example 1: described pending MgB
2Wire strip 7 is for being 1000m with length, and thickness is 1.02mm, and bandwidth is the MgB of 3.01-3.02mm
2Band.The frequency of described variable-frequency motor is adjusted into 8.1Hz, and the corresponding rotating speed that calculates variable-frequency motor is 2.5rpm, and is actual in pending MgB
2When the speed of service V of wire strip 7 tests, at pending MgB
2Wire strip 7 in the longitudinal direction every 30m, recording the cabling time is 12min, insulation back MgB
2The thickness of strip model is 1.03-1.04mm, and the insulating layer thickness scope is 0.01-0.02mm.Record processing back MgB with megohmmeter
2Band is 2 points end to end of insulated wire, can obtain voltage greater than 500v, shows the MgB after the insulation
2The band insulation is good, does not have to puncture or the uncoated phenomenon.All the other steps are all identical with embodiment 1 with technological parameter.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection range of technical solution of the present invention according to the technology of the present invention essence.
Claims (13)
1. magnet MgB
2The insulating device of wire strip is characterized in that: comprise the middle part heat-treatment furnace (2) of boiler tube (1) is housed, to pending MgB
2The device for painting (3) that the outer surface of wire strip (7) is evenly painted, match and use and pending MgB
2Wire strip (7) tighten the back from device for painting (3) inner with inner the putting belt wheel (4) and take-up pulley (5), driving variable-frequency motor that take-up pulley (5) rotates and the directive wheel (8) that is laid in boiler tube (1) the outlet outside of being pulled through continuously of boiler tube (1), described device for painting (3) is laid in the inlet of boiler tube (1) and puts between the belt wheel (4); Described device for painting (3) comprises lacquer box (3-1), be arranged on that lacquer box (3-1) is gone up and communicate with the paint bath at lacquer box (3-1) middle part and from both sides up and down to pending MgB
2The application device (3-2) that wire strip (7) is evenly painted and be laid in application device (3-2) oblique upper and to pending MgB
2The lacquer box guide wheel (3-3) that wire strip (7) leads, described belt wheel (4), lacquer box guide wheel (3-3), directive wheel (8) and the take-up pulley (5) put is laid on the same perpendicular successively from left to right or from right to left, and puts the pending MgB after tightening between belt wheel (4) and take-up pulley (5)
2Wire strip (7) successively go up and directive wheel (8) is walked around from coating with lacquer by box guide wheel (3-3); Described application device (3-2) is corresponding with the position of lacquer box guide wheel (3-3), described application device (3-2) be provided with the position relative up and down two be coated with and wipe one's face, and pending MgB
2The upper and lower surface of wire strip (7) respectively with application device (3-2) up and down two be coated with to wipe one's face and contact, application device (3-2) up and down two be coated with and form pending MgB between wiping one's face
2The japanning mouth that wire strip (7) is evenly painted.
2. according to the described a kind of magnet MgB of claim 1
2The insulating device of wire strip is characterized in that: described lacquer box guide wheel (3-3) is positioned at the oblique below of putting belt wheel (4), and directive wheel (8) is positioned at the oblique upper of lacquer box guide wheel (3-3), and puts the pending MgB after tightening between belt wheel (4) and take-up pulley (5)
2Wire strip (7) be shaped as zigzag; Described heat-treatment furnace (2) is and is tilted to laying, and boiler tube (1) is coaxial to be installed in heat-treatment furnace (2) inside, and pending MgB between the angle of inclination of heat-treatment furnace (2) and lacquer box guide wheel (3-3) and directive wheel (8)
2The angle of inclination unanimity of wire strip (7); Described application device (3-2) up and down two be coated with to wipe one's face all to be and be tilted to laying, described be coated with the angle of inclination of wiping one's face and put belt wheel (4) and lacquer box guide wheel (3-3) between pending MgB
2The angle of inclination unanimity of wire strip (7), and described to be coated with the incline direction of wiping one's face consistent with the tangential direction of lacquer box guide wheel (3-3).
3. according to the described a kind of magnet MgB of claim 2
2The insulating device of wire strip is characterized in that: described pending MgB
2Wire strip (7) is successively walked around from the bottom of lacquer box guide wheel (3-3) and the top of directive wheel (8), and pending MgB
2Wire strip (7) is pulled through continuously from boiler tube (1) inside from the bottom to top.
4. according to claim 1,2 or 3 described a kind of magnet MgB
2The insulating device of wire strip is characterized in that: described heat-treatment furnace (2) and device for painting (3) carry out support fixation by bracing frame (9) and brace table (10) respectively.
5. according to the described a kind of magnet MgB of claim 2
2The insulating device of wire strip is characterized in that: the wiping one's face last tiling that is coated with of described application device (3-2) has one deck felt platform (3-4).
6. according to the described a kind of magnet MgB of claim 2
2The insulating device of wire strip is characterized in that: the described angle of inclination of wiping one's face that is coated with is 20 ± 5 °.
7. according to claim 1,2 or 3 described a kind of magnet MgB
2The insulating device of wire strip, it is characterized in that: described device for painting (3) comprises that also two are symmetricly set on the supporting seat (12) of the described paint bath left and right sides and are installed on installation shaft between two supporting seats (12), and described lacquer box guide wheel (3-3) coaxial package is connected by bearing (13) between the middle part of described installation shaft and lacquer box guide wheel (3-3) and described installation shaft.
8. a utilization is installed according to claim 1 to MgB
2Wire strip carries out the method for insulation processing, it is characterized in that this method may further comprise the steps:
Step 1, wire strip twine: with pending MgB
2After wire strip (7) is wrapped in continuously and puts on the belt wheel (4), with pending MgB
2The external end head of wire strip (7) penetrates and corresponding after coat with lacquer that box guide wheel (3-3) is walked around and pull out in the boiler tube (1) from the forward (FWD) mouth between lacquer box guide wheel (3-3) and application device (3-2), again with pending MgB
2Wire strip (7) is walked around and is wrapped on the take-up pulley (5) from directive wheel (8);
Step 2, body of heater heat up: the furnace temperature of heat-treatment furnace (2) is risen to the oven dry treatment temperature, and described oven dry treatment temperature is 200～300 ℃;
Step 3, to pending MgB
2Wire strip (7) carries out dynamic continuous painting insulation processing, and its dynamic continuous painting insulation processing process is as follows:
301. the rotating speed of variable-frequency motor is determined: according to pending MgB
2The gearratio of wire strip (7) between speed of service V, variable-frequency motor and the take-up pulley (5) put between belt wheel (4) and take-up pulley (5) and the diameter of take-up pulley (5) are estimated the rotating speed of variable-frequency motor; In the whole dynamic continuous painting insulation processing process, the speed of service V of described pending MgB2 wire strip (7) is controlled between 150 ± 10m/h;
302. the speed setting of variable-frequency motor:, set the rotating speed of variable-frequency motor according to the tachometer value of the variable-frequency motor that is estimated in the step 301;
303. startup variable-frequency motor, and after variable-frequency motor starts drives that take-up pulley (5) rotates and with pending MgB
2Belt wheel (4) rotation was put in corresponding drive after wire strip (7) was tightened; Afterwards, at take-up pulley (5) with put under the mating reaction of belt wheel (4), and under the guide effect of lacquer box guide wheel (3-3) and directive wheel (8), drive pending MgB
2Wire strip (7) is pulled through from the inside of described japanning mouthful and boiler tube (1) continuously with speed of service V, with to pending MgB
2Wire strip (7) carries out dynamically continuous even japanning and oven dry is handled, thereby realizes pending MgB
2The dynamic continuous painting insulation processing process of wire strip (7);
Dynamically in the continuous painting insulation processing process, by formula V=L/t calculates pending MgB
2The speed of service V of wire strip (7), L is selected pending MgB in the formula
2The effective use length of wire strip (7) after dynamic continuous painting insulation processing, t is that selected length is the pending MgB of L
2The dynamic continuous painting insulation processing time of wire strip (7) is to guarantee pending MgB
2The speed of service V of wire strip (7) is controlled between 150 ± 10m/h; And, adjust accordingly by rotating speed variable-frequency motor, make pending MgB
2The speed of service V of superconducting line strips (7) is controlled between 150 ± 10m/h.
9. according to the described a kind of magnet MgB of claim 8
2The insulating treatment method of wire strip is characterized in that: put described in the step 1 on the wheel shaft of belt wheel (4) tension regulator is installed; Correspondingly, described in the step 303 with pending MgB
2When belt wheel (4) rotation was put in corresponding drive after wire strip (7) was tightened, also need to be in the pending MgB of tensioned state by described tension adjusting device
2The tension adjustment of wire strip (7) is 9.8 ± 1N.
10. according to claim 8 or 9 described a kind of magnet MgB
2The insulating treatment method of wire strip is characterized in that: the furnace temperature with heat-treatment furnace (2) described in the step 2 rises to before the oven dry treatment temperature, the voltage of heat-treatment furnace (2) should be adjusted into 105 ± 10V and its electric current is adjusted into 5 ± 0.5A; When the furnace temperature of heat-treatment furnace (2) is risen to the oven dry treatment temperature, heat up with the heating rate of 20～40 ℃/min; When the rotating speed to variable-frequency motor described in the step 302 is set, also need frequency with variable-frequency motor be adjusted into 8.1～9.0Hz and its rotating speed is adjusted in the scope of 2～5.5rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101373256A CN101807464B (en) | 2010-03-31 | 2010-03-31 | Magnet MgB2 wire strip insulating device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101373256A CN101807464B (en) | 2010-03-31 | 2010-03-31 | Magnet MgB2 wire strip insulating device and method |
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| CN101807464A true CN101807464A (en) | 2010-08-18 |
| CN101807464B CN101807464B (en) | 2011-12-07 |
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| CN2010101373256A Expired - Fee Related CN101807464B (en) | 2010-03-31 | 2010-03-31 | Magnet MgB2 wire strip insulating device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102087904A (en) * | 2010-12-14 | 2011-06-08 | 中国科学院近代物理研究所 | Device and method for winding superconducting solenoid coil |
| CN102664086A (en) * | 2012-05-30 | 2012-09-12 | 西北有色金属研究院 | Insulation processing method of MgB2 wire strip |
| CN102676059A (en) * | 2012-05-26 | 2012-09-19 | 西北有色金属研究院 | Insulated paint used for surface insulation of MgB2 wires and tapes and insulation processing method |
| CN108364726A (en) * | 2018-02-02 | 2018-08-03 | 北京交通大学 | Fluorine-containing solvable polyimides forms application and the method for insulating coating on yttrium based high-temperature superconductive strip surface |
| CN109755015A (en) * | 2018-12-25 | 2019-05-14 | 中国科学院合肥物质科学研究院 | A kind of insulating treatment process of the superconducting magnet leading-out terminal of Y type end construction |
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| US20050008771A1 (en) * | 2003-07-11 | 2005-01-13 | Yoshihide Goto | Device for applying varnish to electric wire and method of applying varnish |
| CN101051562A (en) * | 2007-01-29 | 2007-10-10 | 甘少颜 | Lacquer dipping machine for saving floor occupying area |
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| US20050008771A1 (en) * | 2003-07-11 | 2005-01-13 | Yoshihide Goto | Device for applying varnish to electric wire and method of applying varnish |
| CN1577641A (en) * | 2003-07-11 | 2005-02-09 | 后藤电子株式会社 | Device for applying varnish to electric wire and method of applying varnish |
| CN101051562A (en) * | 2007-01-29 | 2007-10-10 | 甘少颜 | Lacquer dipping machine for saving floor occupying area |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087904A (en) * | 2010-12-14 | 2011-06-08 | 中国科学院近代物理研究所 | Device and method for winding superconducting solenoid coil |
| CN102087904B (en) * | 2010-12-14 | 2013-08-21 | 中国科学院近代物理研究所 | Device and method for winding superconducting solenoid coil |
| CN102676059A (en) * | 2012-05-26 | 2012-09-19 | 西北有色金属研究院 | Insulated paint used for surface insulation of MgB2 wires and tapes and insulation processing method |
| CN102664086A (en) * | 2012-05-30 | 2012-09-12 | 西北有色金属研究院 | Insulation processing method of MgB2 wire strip |
| CN108364726A (en) * | 2018-02-02 | 2018-08-03 | 北京交通大学 | Fluorine-containing solvable polyimides forms application and the method for insulating coating on yttrium based high-temperature superconductive strip surface |
| CN109755015A (en) * | 2018-12-25 | 2019-05-14 | 中国科学院合肥物质科学研究院 | A kind of insulating treatment process of the superconducting magnet leading-out terminal of Y type end construction |
| CN109755015B (en) * | 2018-12-25 | 2020-11-10 | 中国科学院合肥物质科学研究院 | Insulation treatment process for superconducting magnet wire outlet end with Y-shaped tail end structure |
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|---|---|
| CN101807464B (en) | 2011-12-07 |
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