CN114167182A - Device for testing circulating bending and current-carrying characteristics of high-temperature superconducting strip in liquid helium temperature region - Google Patents
Device for testing circulating bending and current-carrying characteristics of high-temperature superconducting strip in liquid helium temperature region Download PDFInfo
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- CN114167182A CN114167182A CN202111475302.0A CN202111475302A CN114167182A CN 114167182 A CN114167182 A CN 114167182A CN 202111475302 A CN202111475302 A CN 202111475302A CN 114167182 A CN114167182 A CN 114167182A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses a device for testing the circulating bending and current-carrying characteristics of a high-temperature superconducting strip in a liquid helium temperature zone. The device consists of a transmission device, a conductive device, a heat insulation layer and a basic framework, wherein the transmission device is a core part. The transmission device comprises a motor, a motor connecting shaft, a coupler, a worm, a turbine, a rotating shaft, a rotating platform substrate and a spur gear. The motor connecting shaft both ends are passed through the shaft coupling and are linked to each other with motor and worm, the motor will drive the worm turbine and rotate, first revolving stage base plate links to each other with the turbine through first rotation axis, first spur gear and second spur gear pass through second rotation axis and third rotation axis and link to each other with first revolving stage base plate and second revolving stage base plate, the strip is pressed between copper clamp plate and the G10 briquetting on two revolving stage base plates, consequently, the rotation of turbine can make first revolving stage base plate and second revolving stage base plate take place the counter-rotation, and then drive the strip and take place the bending. And measuring the voltage and the current at two ends of the strip material, and obtaining the critical current of the strip material under the bending radius according to the U-I curve.
Description
Technical Field
The invention relates to the technical field of performance measurement and test of superconducting materials, in particular to a device for testing the circulating bending and current-carrying characteristics of a high-temperature superconducting tape in a liquid helium temperature zone, which is used for testing the current performance of the high-temperature superconducting tape in the circulating bending in the liquid helium temperature zone.
Background
The high-temperature superconducting material has the advantages of high critical temperature, high critical magnetic field, high current carrying capacity and the like, and has wide application prospects in the fields of superconducting cables, high-field magnets, accelerators and the like. In practical application, the high-temperature superconducting strip is frequently bent repeatedly for many times, the current-carrying performance of the strip is reduced by bending the strip, even the strip is quenched, and the fatigue failure can occur after the strip is bent for many times, so that the current-carrying performance of the strip after the strip is bent by fatigue needs to be tested.
The existing method for measuring the critical current of the strip only changes the shape of the strip and places the strip on a sample rod for performance test, but the method is not very complicated, but is very complicated and difficult for testing the current-carrying performance after the fatigue times are hundreds of thousands of times. The artificial bending is difficult to control the stress, so that the strip is automatically and circularly bent, and the current-carrying performance of the strip under the circulation times can be measured in real time, which is beneficial to further researching the performance of the high-temperature superconducting strip to promote the development of the strip in various fields.
Disclosure of Invention
The invention aims to provide a device for testing the circulating bending and current-carrying characteristics of a high-temperature superconducting strip in a liquid helium temperature region. The driving device in the device can remotely control the circular bending of the strip material in the Dewar, and the conducting device can electrify the strip material and test the critical current of the strip material, so that the device can realize the integration of the circular bending and the current-carrying performance test of the strip material.
The technical scheme of the invention is as follows:
a device for testing the circulating bending and current-carrying characteristics of a high-temperature superconducting strip in a liquid helium temperature zone comprises a transmission device, a conductive device, a heat insulation layer and a basic framework;
the transmission device comprises a motor, a motor connecting shaft, a coupler, a worm wheel, a first rotating shaft, a second rotating shaft, a first rotating table substrate, a second rotating table substrate, a first spur gear and a second spur gear;
two ends of the motor connecting shaft are respectively connected with the motor and the worm through a coupler; the worm wheel and the worm are mutually coupled; the first rotating platform substrate is connected with the turbine through a first rotating shaft; the first spur gear is connected with the first rotating table substrate through a second rotating shaft; the second spur gear is connected with the second rotating table substrate through a third rotating shaft;
a first G10 pressing block and a first copper pressing plate are arranged on the first rotating platform substrate, and the first G10 pressing block is arranged between the first rotating platform substrate and the first copper pressing plate; the second G10 pressing block is arranged between the second rotating platform substrate and the second copper pressing plate; the strip passes through the middle of two copper pressing plates and two G10 briquettes, wherein the first copper pressing plate presses the middle part of the strip on a first G10 briquette, and the second copper pressing plate presses the middle part of the strip on a second G10 briquette;
the first spur gear and the second spur gear are coupled with each other, so that the first rotating table substrate can drive the second rotating table substrate to rotate simultaneously; thereby bending the strip.
The conductive device comprises a copper pipe, a copper braided belt, a first copper lead plate, a second copper lead plate, a first copper pressing plate and a second copper pressing plate, and is used for electrifying the belt material; the copper pipe is externally connected with a current lead, and the bottom of the copper pipe is connected with the copper braided belt; the first copper lead plate is mounted on a first G10 pad, and the second copper lead plate is mounted on a second G10 pad. The copper braided strap is fixed on the two copper lead plates. The two ends of the strip are respectively fixed between the two copper lead plates and the two G10 backing plates.
The heat insulating layer is formed by stacking a plurality of layers of heat insulating materials and is arranged between the first middle isolation plate and the cover plate for reducing the leakage of liquid helium.
The basic skeleton includes nonrust steel pipe, apron, first middle division board, second middle division board, bottom plate, eye bolt, first G10 backing plate, second G10 backing plate, first G10 briquetting, second G10 briquetting, first curb plate, second curb plate, third curb plate, fourth curb plate, stopper and copper pipe insulation cover for fixed whole device. Two ends of the stainless steel pipe are respectively connected with the bottom plate and the cover plate, so that the whole device is fixed; the lifting bolt is arranged on the cover plate and is used for connecting the travelling crane to move the device; the first side plate, the second side plate, the third side plate, the fourth side plate, the first G10 base plate and the second G10 base plate are all arranged on the bottom plate; the copper pipe insulating sleeve is arranged between the copper pipe and the cover plate; one end of the limiting block is fixed on the first side plate, and the other end of the limiting block is used for limiting the worm so as to prevent the worm from transversely shaking.
The motor is arranged on the cover plate, and the motor connecting shaft penetrates through the first middle isolation plate and the second middle isolation plate.
And the G10 pressing block is arranged between the rotating platform substrate and the copper pressing plate and is used for insulating the copper pressing plate and the rotating platform substrate.
The G10 compact is a plate made of G10 material. The G10 pad is a plate made of G10 material.
Furthermore, two ends of the motor connecting shaft are connected with the motor and the worm through the couplers, so that the motor drives the worm to rotate and further drives the turbine to rotate, the first rotating platform substrate is connected with the turbine through the first rotating shaft, the first spur gear and the second spur gear are respectively connected with the first rotating platform substrate and the second rotating platform substrate through the second rotating shaft and the third rotating shaft, and the two rotating platform substrates are respectively provided with a G10 pressing block and a copper pressing plate; the strip is pressed between the copper pressing plate and the G10 pressing plate, so that the first rotating platform base plate and the second rotating platform base plate can rotate reversely by the rotation of the turbine, and the strip is driven to bend.
Further, the turbine is installed between the first side plate and the second side plate through a first rotating shaft; the worm is matched with the turbine, one end of the worm is connected with the coupler, and the other end of the worm is installed on the bottom plate through the oilless shaft sleeve.
Further, the first rotating table substrate is installed between the second side plate and the third side plate through the first rotating shaft and the second rotating shaft; the second rotating table base plate is mounted between the second side plate and the fourth side plate through a third rotating shaft and a fourth rotating shaft.
Further, the first spur gear is connected to the first turntable substrate through a second rotation shaft; the second spur gear is connected with the second rotating table substrate through a third rotating shaft; the first spur gear and the second spur gear are coupled with each other, so that the first rotating table substrate can drive the second rotating table substrate to rotate simultaneously.
Further, the first side plate, the second side plate, the third side plate and the fourth side plate are fixed on the bottom plate through screws.
Furthermore, one end of the limiting block is fixed on the first side plate through a screw, and the other end of the limiting block is used for limiting the worm so as to prevent the worm from transversely shaking.
Furthermore, a small square groove is formed above the cover plate and used for mounting and fixing the motor.
Furthermore, the copper pipe is externally connected with a current lead, the bottom of the copper pipe is connected with the copper braided belt, the bottom of the copper pipe is provided with a square plate, and the square plate is provided with four small holes for mounting the copper pipe on the second middle isolation plate. The outer diameter of the copper pipe is 10mm, the wall thickness is 1.5mm, and the copper pipe can bear 400A of current.
Furthermore, the copper pipe insulating sleeve is arranged between the copper pipe and the cover plate and used for insulating the copper pipe and the cover plate.
Further, the oilless shaft sleeves are respectively installed between the motor connecting shaft and the middle isolation plate and between the worm and the bottom plate and used for reinforcing the fixation of the worm and the motor connecting shaft.
Further, the G10 briquetting is installed between the rotating platform substrate and the copper pressing plate and used for insulation between the copper pressing plate and the rotating platform substrate.
Further, the G10 pad is mounted between the base plate and the copper lead plate for insulation between the base plate and the copper lead plate.
Further, the copper lead plate is mounted on a G10 backing plate for connecting the copper braid and the fixing tape both ends. If the copper braid over braid links to each other with the copper clamp plate directly, at the rotatory in-process of copper clamp plate, the phenomenon that the copper braid over braid rocked can appear, has increased the instability of device, has consequently increased the copper lead plate, and the copper lead plate can not swing, and the copper braid over braid can be stable fix in the top. The two ends of the strip material pass through the space between the copper pressing plate and the G10 pressing block and are fixed between the copper lead plate and the G10 backing plate.
Further, the heat insulating layer is installed between the first intermediate partition plate and the cap plate, each layer is 40mm thick, and each layer is 5mm apart, for a total of 10 layers. The radius of the heat insulating layer and the middle isolation plate are 290mm, and are 10mm smaller than the matched Dewar, so that the leakage of liquid helium can be greatly reduced, and the cost is saved.
Further, the lifting bolt is arranged on the cover plate and used for connecting the travelling crane; because the device is large in size and has the height of 1.6m, the device needs to be placed in a Dewar by a crane.
Furthermore, the temperature 20mm above the bottom plate is a low temperature region, and the bottom plate can be soaked in liquid helium during the test process. The device in the low temperature area comprises a worm, a worm wheel, a rotating shaft, a rotating table substrate and a spur gear in a transmission device, a copper braided belt, a copper lead plate and a copper pressing plate in a conductive device, and a bottom plate, a G10 base plate, a G10 pressing block, a side plate, a limiting block and an oilless shaft sleeve in a basic framework. The low-temperature area is a core area of the device, the strip is fixed in the area, and the bending of the strip is controlled by a motor; by measuring the voltage and the current passing through the bent portion of the strip, the critical current of the strip can be measured according to the quench criterion.
Compared with the prior art, the invention has the beneficial effects that:
the device can realize the test of liquid helium environment, and the top end of the device is provided with a cover plate which can be matched with a low-temperature Dewar.
The device can realize automatic circular bending of the strip, and more accurately control the strain of the strip.
The device can realize automatic cycle bending of a long-distance strip, and after the critical current of the strip subjected to fatigue bending for a certain number of times is measured, the motor can be started again to measure the next group of data, namely, a flow can measure a plurality of groups of data.
Drawings
FIGS. 1, 2 and 3 show the low temperature zone of the apparatus of the present invention;
fig. 4 is an overall view of the apparatus.
In the figure, the position of the upper end of the main shaft,
101-motor, 102-motor connecting shaft, 103-coupler, 104-worm, 105-turbine, 1061-first rotating shaft, 1062-second rotating shaft, 1063-third rotating shaft, 1064-fourth rotating shaft, 1071-first rotating table substrate, 1072-second rotating table substrate, 1081-first spur gear, 1082-second spur gear;
201-copper pipe, 202-copper braided belt, 2031-first copper lead plate, 2032-second copper lead plate, 2041-first copper pressing plate and 2042-second copper pressing plate;
300-a thermal insulation layer;
401-stainless steel pipe, 402-cover plate, 4031-first middle isolation plate, 4032-second middle isolation plate, 404-bottom plate, 405-eye bolt, 4061-first G10 base plate, 4062-second G10 base plate, 4071-first G10 pressing block, 4072-second G10 pressing block, 4081-first side plate, 4082-second side plate, 4083-third side plate, 4084-fourth side plate, 409-limiting block, 410-oilless shaft sleeve and 411-copper pipe insulating sleeve.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the prior art solutions, the drawings that are needed in the description of the prior art and the embodiments will be briefly described below.
The invention discloses a device for testing the circulating bending and current-carrying characteristics of a high-temperature superconducting strip in a liquid helium temperature region, which comprises a transmission device, a conductive device, a heat insulating layer 300 and a basic framework, and is shown in figures 1-4. According to one embodiment of the present invention, as shown in fig. 1 and 2, a stainless steel tube 401 and a copper braid 202 are hidden for easy observation in the view of the low temperature region of the device of the present invention. FIG. 3 is a cross-sectional view of a view of the low temperature zone in the apparatus of the present invention. The device of the low temperature zone comprises a worm 104, a turbine 105, a first rotating shaft 1061, a second rotating shaft 1062, a third rotating shaft 1063, a fourth rotating shaft 1064, a first rotating platform substrate 1071, a second rotating platform substrate 1072, a first spur gear 1081 and a second spur gear 1082 in the transmission device, a copper braided belt 202, a first copper lead plate 2031, a second copper lead plate 2032, a first copper pressing plate 2041 and a second copper pressing plate 2042 in the conductive device, a bottom plate 404, a first G10 backing plate 4061, a second G10 backing plate 4062, a first G10 pressing block 4071, a second G10 pressing block 4072, a first side plate 4081, a second side plate 4082, a third side plate 4083, a fourth side plate 4084, a limit block 409 and an oilless shaft sleeve 410 in the basic skeleton. In the invention, the G10 briquette is a plate made of G10 material. The G10 pad is a plate made of G10 material.
The elements of the transmission device, the conductive device, the heat insulating layer 300 and the basic framework are mutually inserted, the whole device is fixedly connected through four stainless steel pipes 401 in the basic framework, and the whole device is pre-tightened by nuts.
The conductive device is used for electrifying the strip and comprises a copper pipe 201, a copper braided belt 202, a copper lead plate 203 and a copper pressing plate 204. One end of a copper pipe 201 in the conductive device passes through the cover plate 402 to be externally connected with a power supply, and the other end passes through the second middle isolation plate 4032 to be connected with the copper braided belt 202. The copper braid 202 is fixed on the two copper lead plates by bolts. The first G10 compact (4071) is mounted between a first rotating table substrate (1071) and a first copper platen (2041); the second G10 compact (4072) is mounted between a second rotating table substrate (1072) and a second copper platen (2042); the strip passes between two copper platens and two G10 compacts, a first copper platen (2041) presses the middle portion of the strip against a first G10 compact (4071), and a second copper platen (2042) presses the middle portion of the strip against a second G10 compact (4072).
The first copper lead plate 2031 is mounted on a first G10 pad 4061, and the second copper lead plate 2032 is mounted on a second G10 pad 4062 for connecting the copper braid 202 and both ends of the fixing tape.
The motor 101 in the transmission device is mounted on the cover plate 402, the motor connecting shaft 102 traverses the first intermediate isolation plate 4031 and the second intermediate isolation plate 4032, both ends of the motor connecting shaft are respectively connected with the motor 101 and the worm 104 through the coupling 103, the worm 105 and the worm 104 are coupled with each other, therefore, the motor 101 drives the worm 104 to rotate, and then drives the worm 105 to rotate, and the first rotating platform substrate 1071 is connected with the worm 105 through the first rotating shaft 1061. The first spur gear 1081 is connected to the first rotary table substrate 1071 through a second rotation shaft 1062. The second spur gear 1082 is connected to the second rotary table substrate 1072 through a third rotation shaft 1063.
A first G10 pressing block 4071 and a first copper pressing plate 2041 are fixed on the first rotating table substrate 1071, and a second G10 pressing block 4072 and a second copper pressing plate 2042 are fixed on the second rotating table substrate 1072; the first G10 compact 4071 is mounted between the first turntable substrate 1071 and the first copper platen 2041; the second G10 compact 4072 is mounted between the second rotary table substrate 1072 and the second copper platen 2042; the strip passes between two copper platens and two G10 compacts, a first copper platen 2041 presses the middle portion of the strip against a first G10 compact 4071, and a second copper platen 2042 presses the middle portion of the strip against a second G10 compact 4072.
The first spur gear 1081 and the second spur gear 1082 are coupled to one another. The two copper platens and the two G10 compacts are fixed to the turntable substrate so that rotation of the turbine 105 causes the first turntable substrate 1071 and the second turntable substrate 1072 to rotate in opposite directions, thereby bending the strip.
The first G10 pressing block 4071 is installed between the first rotating table substrate 1071 and the first copper pressing plate 2041 for insulation between the first copper pressing plate 2041 and the first rotating table substrate 1071; the second G10 compact 4072 is mounted between the second rotary table substrate 1072 and the second copper platen 2042 for insulation between the second copper platen 2042 and the second rotary table substrate 1072. The first G10 pad 4061 is installed between the base plate 404 and the first copper lead plate 2031 for insulation between the base plate 404 and the first copper lead plate 2031; the second G10 pad 4062 is mounted between the base plate 404 and the second copper lead plate 2032 for insulation between the base plate 404 and the second copper lead plate 2032.
The turbine 105 is installed between the first side plate 4081 and the second side plate 4082 by the first rotation shaft 1061. The worm 104 is matched with the worm wheel 105, one end of the worm is connected with the coupler 103, and the other end of the worm is arranged on the bottom plate 404 through an oilless shaft sleeve 410.
The first rotary table substrate 1071 is mounted between the second and third side plates 4082 and 4083 by the first and second rotation shafts 1061 and 1062. The second rotary table substrate 1072 is mounted between the second side plate 4082 and the fourth side plate 4084 through the third rotation shaft 1063 and the fourth rotation shaft 1064.
The insulating layer 300 is installed between the first intermediate barrier 4031 and the cap plate 402 in a total of 10 layers each having a thickness of 40mm and a distance of 5mm therebetween.
Two ends of a stainless steel pipe 401 in the basic framework are respectively connected with a bottom plate 404 and a cover plate 402, and the fixing effect of the whole device is achieved. An eye bolt 405 is mounted on the cover plate 402 for connection to a trolley for moving the device. First side panel 4081, second side panel 4082, third side panel 4083, fourth side panel 4084, first G10 pad 4061, and second G10 pad 4062 are all mounted above base panel 404. The first side plate 4081, the second side plate 4082, the third side plate 4083 and the fourth side plate 4084 are fixed to the bottom plate 404 by screws. The third 4083 and fourth 4084 side panels are positioned adjacent to each other and the first 4081 and second 4082 side panels are positioned parallel front to back. A copper tube insulating sleeve 411 is installed between the copper tube 201 and the cap plate 402 for insulation between the copper tube 201 and the cap plate 402.
One end of the limiting block 409 is fixed on the first side plate 4081 through a screw, and the other end of the limiting block is used for limiting the worm 104, so that the worm 104 is prevented from transversely shaking.
Fig. 4 is an overall view of the device with the low temperature zone at the lowermost end of the device, including the floor 404 and 20mm above. After the device is placed in a liquid helium vessel during testing, the area will be immersed in liquid helium. Above the low temperature zone is a second intermediate spacer 4032 to which the copper tubing 201 is secured. The first intermediate barrier 4031 and the second intermediate barrier 4032 have some effect of reducing evaporation of liquid helium and function as a stabilizing device structure with the stainless steel tube 401 traversing both. The insulation layer 300 is located above the first intermediate barrier 4031 immediately above the cover plate 402, the cover plate 402 having mounted thereon the motor 101 and the eye bolt 405, the eye bolt 405 being used to connect the trolley to move the apparatus into the cryogen vessel. A small square groove is formed above the cover plate 402 and used for mounting and fixing the motor 101. Because the device is large in size and has the height of 1.6m, the device needs to be placed in a Dewar by a crane.
The copper pipe 201 is externally connected with a current lead, the bottom of the copper pipe 201 is connected with the copper braided belt 202, the bottom of the copper pipe 201 is provided with a square plate, and the square plate is provided with four small holes for installing the copper pipe 201 on the second middle isolation plate 4032. The copper pipe 201 has an outer diameter of 10mm and a wall thickness of 1.5mm, and can bear 400A of current.
In the use of the device, the two ends of the tape are first fixed between the copper lead plates on both sides and the G10 backing plate, and the copper braided tape 202 is fixed on the two copper lead plates by bolts, respectively. The middle of the strip is then fixed between two copper press plates and two G10 press blocks, and the strip is completely installed. The whole device is placed in a low-temperature container, a power supply is connected to the copper pipe 201, and the motor 101 is started to test the bending and critical current of the strip.
Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, but various changes may be apparent to those skilled in the art, and it is intended that all inventive concepts utilizing the inventive concepts set forth herein be protected without departing from the spirit and scope of the present invention as defined and limited by the appended claims.
Claims (10)
1. A device for testing the circulating bending and current-carrying characteristics of a high-temperature superconducting strip in a liquid helium temperature zone is characterized in that: comprises a transmission device, a conductive device, a heat insulating layer (300) and a basic framework; wherein the content of the first and second substances,
the transmission device comprises a motor (101), a motor connecting shaft (102), a coupler (103), a worm (104), a turbine (105), a first rotating shaft (1061), a second rotating shaft (1062), a first rotating table substrate (1071), a second rotating table substrate (1072), a first spur gear (1081) and a second spur gear (1082); two ends of the motor connecting shaft (102) are respectively connected with the motor (101) and the worm (104) through a coupler (103); the worm wheel (105) and the worm (104) are mutually coupled; the first rotating table substrate (1071) is connected to the turbine (105) via a first rotating shaft (1061); the first spur gear (1081) is connected to a first rotating table substrate (1071) through a second rotating shaft (1062); the second spur gear (1082) is connected to a second rotary table substrate (1072) through a third rotation shaft (1063);
a first G10 pressing block (4071) and a first copper pressing plate (2041) are arranged on the first rotating platform substrate (1071), and the first G10 pressing block (4071) is installed between the first rotating platform substrate (1071) and the first copper pressing plate (2041); the second G10 compact (4072) is mounted between a second rotating table substrate (1072) and a second copper platen (2042); the strip passes through the middle of two copper pressing plates and two G10 pressing blocks, a first copper pressing plate (2041) presses the middle part of the strip on a first G10 pressing block (4071), and a second copper pressing plate (2042) presses the middle part of the strip on a second G10 pressing block (4072); the first spur gear (1081) and the second spur gear (1082) are coupled to one another such that the first turntable substrate (1071) can simultaneously rotate the second turntable substrate (1072); thereby bending the strip;
the conductive device comprises a copper pipe (201), a copper woven belt (202), a first copper lead plate (2031), a second copper lead plate (2032), a first copper pressing plate (2041) and a second copper pressing plate (2042), and is used for electrifying the belt material; the copper pipe (201) is externally connected with a current lead, and the bottom of the copper pipe is connected with the copper braided belt (202); the first copper lead plate (2031) is mounted on a first G10 tie plate (4061); the second copper lead plate (2032) is mounted on a second G10 tie plate (4062); the copper braided strap (202) is fixed on the two copper lead plates;
the heat insulation layer (300) is formed by stacking a plurality of layers of heat insulation materials, is arranged between the first middle isolation plate (4031) and the cover plate (402) and is used for reducing leakage of liquid helium;
the foundation framework comprises a stainless steel pipe (401), a cover plate (402), a first middle isolation plate (4031), a second middle isolation plate (4032), a bottom plate (404), a lifting eye bolt (405), a first G10 base plate (4061), a second G10 base plate (4062), a first G10 pressing block (4071), a second G10 pressing block (4072), a first side plate (4081), a second side plate (4082), a third side plate (4083), a fourth side plate (4084), a limiting block (409) and a copper pipe insulating sleeve (411) and is used for fixing the whole device; two ends of the stainless steel pipe (401) are respectively connected with the bottom plate (404) and the cover plate (402) to play a role in fixing the whole device; an eyebolt (405) is mounted on the cover plate (402) for connecting the traveling crane to move the device; the first side plate (4081), the second side plate (4082), the third side plate (4083), the fourth side plate (4084), the first G10 pad (4061) and the second G10 pad (4062) are all mounted on the bottom plate (404); the copper pipe insulating sleeve (411) is arranged between the copper pipe (201) and the cover plate (402); one end of the limiting block (409) is fixed on the first side plate (4081), and the other end of the limiting block is used for limiting the worm (104) so as to prevent the worm (104) from transversely shaking;
the motor (101) is arranged on the cover plate (402), and the motor connecting shaft (102) traverses the first middle isolation plate (4031) and the second middle isolation plate (4032).
2. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the motor (101) drives the worm (104) to rotate, so as to drive the turbine (105) to rotate, and the strip is pressed between the copper pressing plate on the rotating table substrate and the G10 pressing block, so that the rotation of the turbine (105) can enable the first rotating table substrate (1071) and the second rotating table substrate (1072) to rotate reversely, so as to drive the strip to bend; the two ends of the strip are fixed between two copper lead plates and two G10 backing plates respectively.
3. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the turbine (105) is mounted between the first side plate (4081) and the second side plate (4082) by a first rotation shaft;
one end of the worm (104) is connected with the coupler (103), and the other end of the worm is arranged on the bottom plate (404) through an oilless shaft sleeve.
4. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the first rotating table substrate (1071) is mounted between the second side plate (4082) and the third side plate (4083) through a first rotating shaft (1061) and a second rotating shaft (1062);
the second rotating table substrate (1072) is mounted between the second side plate (4082) and the fourth side plate (4084) via a third rotating shaft (1063) and a fourth rotating shaft (1064).
5. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the first side plate (4081), the second side plate (4082), the third side plate (4083) and the fourth side plate (4084) are fixed on the bottom plate (404) through screws, the third side plate (4083) and the fourth side plate (4084) are adjacently placed, and the first side plate (4081) and the second side plate (4082) are placed in parallel front and back; one end of the limiting block (409) is fixed on the first side plate (4081) through a screw.
6. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: a small square groove is formed above the cover plate (402) and used for mounting and fixing the motor (101).
7. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the bottom of the copper pipe (201) is provided with a square plate, and the square plate is provided with four small holes for mounting the copper pipe (201) on the second middle isolation plate (4032); the copper pipe (201) has an outer diameter of 10mm and a wall thickness of 1.5mm, and can bear 400A of current.
8. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the copper pipe insulating sleeve (411) is used for insulating the copper pipe (201) and the cover plate (402);
the oilless shaft sleeves are respectively arranged between the motor connecting shaft (102) and the middle spacing plate and between the worm (104) and the bottom plate (404) and used for reinforcing the fixation of the worm (104) and the motor connecting shaft (102); the middle isolation plate is a first middle isolation plate (4031) and a second middle isolation plate (4032).
9. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the first G10 pad (4061) is installed between the base plate (404) and the first copper lead plate (2031) for insulation between the base plate (404) and the first copper lead plate (2031); the second G10 pad (4062) is mounted between the base plate (404) and the second copper lead plate (2032) for insulation between the base plate (404) and the second copper lead plate (2032).
10. The device for testing the circulating bending and current-carrying characteristics of the high-temperature superconducting tape in the liquid helium temperature region according to claim 1, wherein: the thickness of each heat insulation layer (300) is 40mm, the distance between each layer is 5mm, and the total number of the layers is 10.
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| CN202111475302.0A CN114167182B (en) | 2021-12-06 | 2021-12-06 | Device for testing cyclic bending and current-carrying characteristics of liquid helium temperature zone of superconducting strip |
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| KR20040056597A (en) * | 2002-12-24 | 2004-07-01 | 한국전기연구원 | Continuous critical current measurement system for high temperature superconducting tape |
| KR100805284B1 (en) * | 2006-08-31 | 2008-02-20 | 한국전기연구원 | Holder for measurement of bending strain effect on critical current in hts superconducting tapes and accelerated test apparatus adopting the holder |
| CN110261694A (en) * | 2019-05-17 | 2019-09-20 | 中国科学院合肥物质科学研究院 | A kind of variable bending criticality energy test sample bar of Superconducting Strand |
| CN111413567A (en) * | 2020-04-21 | 2020-07-14 | 清华大学 | System and method for testing current-carrying characteristics of superconducting tape |
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2021
- 2021-12-06 CN CN202111475302.0A patent/CN114167182B/en active Active
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| KR20040056597A (en) * | 2002-12-24 | 2004-07-01 | 한국전기연구원 | Continuous critical current measurement system for high temperature superconducting tape |
| KR100805284B1 (en) * | 2006-08-31 | 2008-02-20 | 한국전기연구원 | Holder for measurement of bending strain effect on critical current in hts superconducting tapes and accelerated test apparatus adopting the holder |
| CN110261694A (en) * | 2019-05-17 | 2019-09-20 | 中国科学院合肥物质科学研究院 | A kind of variable bending criticality energy test sample bar of Superconducting Strand |
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