CN107505493B - Tension-controllable superconducting strip critical current measuring device - Google Patents
Tension-controllable superconducting strip critical current measuring device Download PDFInfo
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- CN107505493B CN107505493B CN201610960810.0A CN201610960810A CN107505493B CN 107505493 B CN107505493 B CN 107505493B CN 201610960810 A CN201610960810 A CN 201610960810A CN 107505493 B CN107505493 B CN 107505493B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Abstract
The utility model provides a controllable superconductive belt critical current measuring device of tension, relate to superconductive belt critical current measuring device field, including the liquid nitrogen groove, monitored control system, four lead wires measurement system and superconductive belt system of marcing, be equipped with tension adjusting device in the superconductive belt system of marcing, tension adjusting device includes the tight pulley assembly, the slider, fixing base and ejector pin, the tight pulley assembly is connected as an organic wholely with the slider, the slider slides and sets up in the spout of fixing base and can drive the tight pulley assembly and remove, ejector pin one end stretches into in the spout and pushes up on the slider through a spring so that the superconductive belt of tensioning on the tight pulley assembly has an initial tension, be equipped with on the fixing base and be used for detecting the slider in the direction of movement of superconductive belt advancing the in-process and feed back superconductive belt too loose or too tight signal to monitored control system. The invention can stabilize the tension of the superconducting strip in a certain range in the measuring process, has high accuracy of measuring data and can not damage the superconductivity.
Description
Technical Field
The invention relates to the technical field of superconducting tape critical current measuring devices, in particular to a superconducting tape critical current measuring device with tension control.
Background
The critical current is an important parameter for representing the current carrying capacity of the superconductor, is also a main technical index for measuring the quality of the superconducting material, and can be used for exploring the self characteristics of the material and serving the application and development of the material by researching the measuring means. Most of critical currents are obtained by a magnetic induction method and are obtained indirectly through calculation, so that the problem of heating of a current electrode under a large current is avoided or reduced, but the critical current can only be measured roughly by the method, and the application range is limited. The most visual and most truly reflecting the practical current carrying capacity of the material is a steady-state direct current transmission method, namely a four-lead method. The four-lead measuring method is to provide current for a sample through two leads by a current source, measure voltage drop through the other two leads by utilizing a nanovoltmeter, further calculate the resistance value of the sample, measure a v-l curve, and then determine critical current.
At present, in the measurement of a superconducting long belt by adopting a four-lead method, firstly, welding points are arranged at two ends of the belt material by adopting a welding method, the critical current of the whole long belt is measured, the relevant information about uniformity, defects and the like of the belt material cannot be known, and the welded belt material cannot be used continuously; secondly, the critical current of the long belt is measured by adopting a magnetic induction method, and the critical current can only be indirectly measured by the measuring method, so that the measured value is inaccurate and not intuitive. In addition, there are four-wire measuring methods using crimp measuring, which travel a long strip with a strip drive, and measure the critical current of the section with a current and voltage probe every certain length of travel until the entire long strip is measured. The existing measuring device has the problem that the tension of the long belt is easy to change in the advancing process of the long belt so as to generate over-loosening or over-tightening, which may cause the problems that the superconductivity of the superconducting belt is damaged or the measuring result is inaccurate.
Disclosure of Invention
The invention aims to provide a tension-controllable critical current measuring device for a superconducting strip, which measures the critical current of a superconducting long strip by using a four-lead method, is simple to operate and convenient to use, can rapidly and accurately measure the critical current of the superconducting strip, and obtains the uniformity, defect and other information of the superconducting long strip.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the utility model provides a controllable superconductive strip critical current measuring device of tension, including the liquid nitrogen groove, monitored control system, four lead wires measurement system and superconductive strip system of marcing, superconductive strip system of marcing is interior superconductive strip twines on the blowing dish and its other end is accomodate on receiving the charging tray behind tension sensor, encoder assembly and a plurality of guide pulley, still be equipped with tension adjusting device in the superconductive strip system of marcing, tension adjusting device includes the elastic wheel assembly, the slider, fixing base and ejector pin, elastic wheel assembly is connected as an organic whole with the slider, the inside spout that is equipped with of fixing base, the slider slides and sets up in the spout and can drive the elastic wheel assembly and remove, the spring has been placed in the spout in one side of slider, ejector pin one end stretches into the spout and pushes up the one end of spring through its end connection, the superconductive strip of its other end of being supported on the slider after the spring is compressed so that the tension on the elastic wheel assembly has an initial tension, adjust the initial tension size of slider in the spout through adjusting the length of ejector pin, one side of the outside the spout fixing base is equipped with induction device for detecting the slider and moving direction and monitoring the signal feedback system and monitoring the signal according to the superconductive strip and the expansion speed of the superconductive strip and feeding back to the system of the signal.
Further, the induction device comprises a magnetic switch I and a magnetic switch II which are respectively arranged close to two ends of the chute, a magnetic ring is arranged on the sliding block, when the sliding block slides to one end of the chute in the travelling process of the superconducting tape, the magnetic switch at the corresponding end of the chute senses that the magnetic ring is close to the chute, and then sends out a signal of too loose or too tight of the superconducting tape to the monitoring system.
The sliding groove penetrates through two end faces of the fixing seat, a sliding groove end cover is fixed on one end face of the fixing seat, a push rod support is arranged opposite to the other end face of the fixing seat, one end of the push rod penetrates through a threaded hole formed in the push rod support and then extends into the sliding groove from one end of the fixing seat, and a rod body of the push rod is in threaded fit with the threaded hole.
The four-lead measuring system comprises two current bars, two voltage bars, four air cylinders, four electromagnetic valves and a gas pressure reducing valve, wherein the four air cylinders respectively drive the two current bars and the two voltage bars to move so as to realize lifting and falling actions, the gas pressure reducing valve is connected with the four electromagnetic valves through air pipes, the four electromagnetic valves are connected with the corresponding air cylinders through the air pipes, and the monitoring system respectively controls the movement of the four air cylinders through the four electromagnetic valves.
The cylinder shafts of the four cylinders are connected with one end of a corresponding current rod or voltage rod through insulating rods, positioning sliding grooves are formed in each cylinder, a sliding seat is fixedly arranged on each insulating rod, a positioning sliding block is arranged on each sliding seat, and the positioning sliding blocks slide in the positioning sliding grooves along with the insulating rods in the stretching process of the cylinder shafts.
The beneficial effects are that: tension adjusting device and tension sensor have been set up in the superconductive strip system of marcing, can in time feed back the tension data and the elasticity signal of superconductive strip in advancing the in-process to can in time adjust blowing dish and receipts charging tray's running speed, and then make the tension size of superconductive strip stable in certain within range, improve the accuracy of measured data, and can avoid the problem that the superconductivity that causes because of tension is too big receives the damage. The tension adjusting device can also adjust the initial tension of the superconducting tape to reach an initial preset tension value when the superconducting tape starts to travel, and the superconducting tape is tightly attached to the guide wheel of the encoder assembly, so that the encoder reads accurately. The four-lead measuring system adopts the cylinder to drive the current and voltage probes to lift and fall, and is matched with the superconducting tape advancing system, so that the critical current of the superconducting tape can be measured section by section, the measurement is convenient, and the measurement result is accurate.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a layout of a four-wire measurement system and superconducting tape running system of the present invention;
FIG. 3 is a block diagram of a four-wire measurement system and superconducting tape running system of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is an enlarged view of a portion of the portion I of FIG. 3;
FIG. 6 is an enlarged view of a portion of the portion II of FIG. 3;
FIG. 7 is an enlarged view of a portion of III in FIG. 4;
FIG. 8 is an enlarged view of a portion of the portion IV of FIG. 4;
FIG. 9 is an overall construction diagram of the tension adjusting device;
FIG. 10 is an exploded view of the tensioning device;
FIG. 11 is another exploded view of the tensioning device;
FIG. 12 is an assembly view of the tensioning device;
FIG. 13 is an exploded view of the take-up wheel assembly;
the reference numerals are: 1. liquid nitrogen tank, 2, liquid nitrogen tank car, 3, ball valve, 4, tension sensor, 5, encoder assembly, 6, cylinder i, 7, cylinder ii, 8, cylinder mount, 9, current bar i, 10, voltage bar i, 11, lower guide wheel i, 12, indium i, 13, indium ii, 14, lower guide wheel ii, 15, voltage bar ii, 16, current bar ii, 17, G10 epoxy plate panel, 18, steel frame, 19, upper guide wheel, 20, cylinder iv, 21, tension adjusting device, 22, infrared dryer, 23, take-up tray, 24, cylinder iii, 25, solenoid iv, 26, solenoid iii, 27, gas pressure reducing valve, 28, solenoid ii, 29, solenoid i, 30, discharge tray, 31, superconducting tape, 32, stepper motor i, 33, stepper motor ii, 34, bridge plate 35, pneumatic speed adjusting valve, 36, cylinder mount bracket, 37, slide, 38, insulating bar, 39, grooved pad 40, grooved ii, 41, grooved i, 42, electrode fixing clip 43, electrode clip pad 44, electrode holder 45, encoder 46, encoder guide wheel 47, bearing housing i, 48, coupler i, 49, encoder transmission shaft 50, encoder mounting bracket 51, encoder bracket 52, encoder bracket clamp plate 53, motor mounting bracket 54, bearing housing ii, 55, power take-off shaft 56, coupler ii, 57, brake 58, motor housing 59, chute end cap 60, slider 61, take-up wheel assembly 62, anti-slip cover 63, shaft retainer ring 64, magnetic ring 65, spring, 66, clip spring 67, top plate 68, magnetic switch i, 69, magnetic switch ii, 70, chute 71, ejector pin 72, fixing base 73, ejector pin support 74, take-up wheel 75, seal bearing, 76. the elastic wheel shaft is 77, the hole retainer ring is 78, the screw is 79, and the elastic wheel groove is formed.
Detailed Description
As shown in fig. 1, 2 and 3, the tension-controllable superconducting tape critical current measuring device comprises a liquid nitrogen tank car 2, a monitoring system, a four-lead measuring system and a superconducting tape travelling system, wherein the liquid nitrogen tank car 2 is provided with a liquid nitrogen tank 1 for containing liquid nitrogen, the inner lining of the liquid nitrogen tank 1 is made of high-density polyurethane foam, and the high-density polyurethane foam has the excellent characteristics of light weight, low temperature resistance and heat insulation, and can play a role in protecting safety and reducing the evaporation speed of the liquid nitrogen to the greatest extent. The four-lead measuring system is used for measuring critical current of the superconducting detection belt segment by segment. A G10 epoxy plate panel 17 is vertically arranged on the liquid nitrogen tank car 2, the G10 epoxy plate panel 17 is fixed on a steel frame 18, the steel frame 18 is erected on the liquid nitrogen tank car 2, and a four-lead measuring system and a superconducting tape travelling system are fixed on the G10 epoxy plate panel 17.
The superconducting tape travelling system comprises a discharging disc 30, a tension sensor 4, an encoder assembly 5, a lower guide wheel I11, a lower guide wheel II 14, an upper guide wheel 19, a tension adjusting device 21 and a receiving disc 23. The superconductive detection belt is wound on the discharging disc, and is stored on the receiving disc 23 after being tensioned by the tension sensor 4, the encoder assembly 5, the lower guide wheel I11, the lower guide wheel II 14, the upper guide wheel 19 and the tension adjusting device 21. The discharging disc 30 and the receiving disc 23 are arranged above the G10 epoxy plate panel 17, the encoder assembly 5 and the upper guide wheel 19 are respectively fixed at two side positions of the upper part of the G10 epoxy plate panel, the lower guide wheel I11 and the lower guide wheel II 14 are respectively fixed at two side positions of the lower part of the G10 epoxy plate panel, and the heights of the lower guide wheel I11 and the lower guide wheel II 14 are kept consistent. An infrared dryer 22 is also arranged between the tension adjusting device 21 and the material receiving disc 23 and is used for drying the detected superconductive detection belt. Wherein, the lower guide wheel I11, the lower guide wheel II 14, the upper guide wheel 19 and the encoder guide wheel 46 are made of polytetrafluoroethylene materials.
As shown in fig. 3, 4 and 8, the discharge tray 30 and the take-up tray 23 are driven to rotate by a stepping motor i 32 and a stepping motor ii 33, respectively, and the assembly structure thereof is illustrated by the stepping motor i 32. The motor mounting frame 53 is mounted on the motor base 58, the motor base 58 is fixed on the steel frame 18, the stepping motor I32 is mounted on one side of the motor mounting frame 53 through the brake 57, the coupler II 56 is mounted in the middle of the motor mounting frame 53, one end of the coupler II 56 is connected with the brake transmission shaft and the brake 57, the other end of the coupler II is connected with the power output shaft 55 and the bearing seat II 54, the discharging disc 30 is mounted on the other end of the power output shaft 55, the bearing seat II 54 is mounted on the motor mounting frame 53, and the power output shaft 55 is mounted in the bearing seat II 54. The two stepping motors are both provided with the brake 57, and the brake 57 can control the motor to stop and go at any time and timely eliminate the inertia of the system, so that the positioning is accurate. The double motors are controlled, so that the double motors can be respectively and flexibly operated according to the needs, and the stable running and adjustable speed of the detection belt in work can be ensured.
As shown in fig. 3, 4, 6 and 7, the encoder assembly 5 includes an encoder 45, an encoder guide wheel 46, a bearing block i 47, a coupler i 48, an encoder transmission shaft 49, an encoder mounting frame 50, an encoder support 51, an encoder support clamping plate 52 and the like, wherein the encoder mounting frame 50 is mounted on the steel frame 18 through the encoder support 51 and the encoder support clamping plate 52, the encoder 45 is mounted on one side of the encoder mounting frame 50, the coupler i 48 is mounted in the middle of the encoder mounting frame 50, one end of the coupler i 48 is connected with an encoder shaft, the other end is connected with the bearing block i 47 through the encoder transmission shaft 49, the bearing block i 47 is mounted on the encoder mounting frame 50, the encoder transmission shaft 49 passes through the bearing block i 47, and the other end is used for mounting the encoder guide wheel 46. The superconductive detection tape is tensioned over encoder wheel 46 as it winds around encoder assembly 5.
The tension sensor 4 has the functions of: the tension value signal of the superconducting detection belt 31 is fed back in real time, so that the monitoring system can timely adjust the tension of the superconducting detection belt 31 in the superconducting belt travelling system, and the tension is enabled to be a safety value. Because of the sensitivity of the coating layer of the superconducting tape to the tension of the superconducting tape, if the tension of the superconducting tape is too high, the superconducting characteristics of the superconducting tape are damaged, and if the superconducting tape is too loose, the accuracy of feedback information of the encoder 45 is affected, so that the tension of the superconducting tape must be controlled within the safe range of the superconducting tape. When the superconducting tape detection starts, on the one hand, the tension of the superconducting detection tape 31 is adjusted to a preset value by using the tension adjusting device 21, on the other hand, in the detection process of the superconducting detection tape 31, as the coil radius of the superconducting detection tape 31 in the receiving disc 23 is larger and larger, the linear speed of the superconducting detection tape 31 in the discharging disc 30 is smaller and smaller, and the linear speed of the superconducting detection tape 31 is smaller and smaller, so that tension change of the superconducting detection tape 31 (under the condition that the rotating speed of the receiving disc 23 is controlled by the signal of the encoder 45) is caused, the monitoring system can adjust the rotating speed of the discharging disc 30 through the stepping motor I32 according to the superconducting tape tension signal provided by the superconducting tape tension sensor 4 in real time, so that the rotating speed of the discharging disc 30 is increased or decreased.
The encoder 45 functions as: during constant speed operation of the superconducting tape 31, the feedback signal of the encoder 45 is used to measure the running distance of the superconducting tape 31 on the one hand and to control the running speed of the superconducting tape 31 on the other hand. In the process of detecting the superconducting current, since the radius of the coil of the superconducting detection belt 31 in the receiving tray 23 is larger and larger along with time, if the running speed of the stepper motor II 33 is unchanged, the angular speed of the coil is unchanged and the linear speed of the coil is faster and faster, that is, the running speed of the superconducting detection belt 31 is faster and faster, when the encoder 45 detects the running speed change of the superconducting detection belt 31, the coil is fed back to the monitoring system in real time, so that the rotating speed of the stepper motor II 33 is adjusted to be the set rotating speed, otherwise, if the running speed of the superconducting detection belt 31 is slowed down, the coil is accelerated.
As shown in fig. 2, 9, 10, 11, 12 and 13, the tension adjusting device comprises a tension wheel assembly 61, a sliding block 60, a fixed seat 72 and a push rod 71, wherein the tension wheel assembly 61 comprises a tension wheel 74, a sealing bearing 75 arranged in an inner hole of the tension wheel 74 and a tension wheel shaft 76 arranged in the sealing bearing 75, one end of the sealing bearing 75 is positioned through a step arranged at the inner hole of the tension wheel, the other end of the sealing bearing 75 is positioned through a hole check ring 77 arranged in the inner hole of the tension wheel, and the tension wheel shaft 76 is positioned through a shaft shoulder structure of the tension wheel shaft and a shaft check ring 63 arranged at one end of the sealing bearing 75. One end of the elastic wheel shaft 76 is connected with the sliding block 60, the other end is connected with an anti-drop cover 62 through a screw 78, the superconducting detection belt 31 is tensioned in an elastic wheel groove 79 of the elastic wheel 74, and the anti-drop cover 62 plays a role in preventing the superconducting detection belt from being separated from the elastic wheel groove 79. The section of the fixed seat 72 is rectangular, the inside of the fixed seat 72 penetrates through the left end face and the right end face of the fixed seat to form a sliding groove 70, the sliding block 60 is arranged in the sliding groove 70 of the fixed seat 72 in a sliding manner and can drive the elastic wheel assembly 61 to move left and right outside the fixed seat 72, so that the tension of the superconducting detection belt 31 can be adjusted. A chute end cover 59 is arranged on one end surface of the fixed seat 72 to block the sliding block 60 in the chute 70, a push rod support 73 is arranged opposite to the other end surface of the fixed seat 72, the bottom of the push rod support 73 is fixed on the G10 epoxy plate panel 17, and the lower part of the push rod support 73 can be connected with the fixed seat 72 into a whole. One end of the ejector rod 71 passes through a threaded hole on the ejector rod support 73 and then extends into the chute 70 from one end face of the fixed seat 72, one end of the ejector rod 71 extending into the chute 70 is fixed with a top plate 67 through the clamp spring 66, a spring 65 is placed between the sliding block 60 and the top plate 67 of the ejector rod in the chute 70, and a rod body of the ejector rod 71 is in threaded connection and fit with the threaded hole on the ejector rod support 73. Screwing the jack 71 causes the spring 65 to be compressed and pushes the slider 60 to slide, screwing the jack 71 to a proper position causes the initial tension of the superconducting detection tape 31 tensioned on the tension pulley to be adjusted to the set value of the tension sensor 4. The initial tension of the superconductive tape 31 at the beginning of the superconductive test allows it to be applied against the guide wheel 46 of the encoder assembly 5, so that the encoder 45 reads accurately. The ejector rod 71 is fixed in position during the running process of the superconducting detection belt, an induction device is arranged at one side of the fixed seat 72 outside the sliding chute 70, and is used for detecting the moving direction of the sliding block 60 during the running process of the superconducting detection belt and feeding back an over-loosening or over-tightening signal of the superconducting detection belt 31 to a monitoring system according to the moving direction of the sliding block, and the monitoring system controls the running speed of the discharging disc 30 and the receiving disc 23 according to the signal fed back by the induction device and the tension sensor 4 and the tension data. The induction device comprises a magnetic switch I68 and a magnetic switch II 69 which are respectively arranged close to two ends of the chute 70, the magnetic switch I68 and the magnetic switch II 69 are arranged in grooves formed in the side wall of the fixed seat 72, the sliding block 60 is provided with a magnetic ring 64, when the sliding block 60 slides to one end of the chute 70 in the advancing process of the superconducting detection belt 31, the magnetic switch at the corresponding end of the chute 70 senses that the magnetic ring 64 is close to and then sends out a signal of excessive loosening or excessive tightening of the superconducting belt to the monitoring system.
As shown in fig. 2, 3 and 5, the four-lead measuring system includes two current bars, two voltage bars, four cylinders, four solenoid valves and a gas pressure reducing valve 27, the four cylinders respectively drive the two current bars and the two voltage bars to move so as to realize lifting and falling actions, the gas pressure reducing valve 27 is connected with the four solenoid valves through air pipes, the four solenoid valves are connected with the corresponding cylinders through air pipes, and the monitoring system respectively controls the movement of the four cylinders through the four solenoid valves. The driving structure and the movement principle of the two current rods and the two voltage rods are the same, the current rod I9 is taken as an example for description, the current rod I9 is driven by the air cylinder I6, the air pressure reducing valve 27 is connected with the electromagnetic valve I29 through an air pipe, the electromagnetic valve I29 is connected with two pneumatic speed regulating valves 35 on the air cylinder I6 through two air pipes, the electromagnetic valve I29 is further connected with a power line and connected with a control circuit, and the electric signal of the control circuit is received so as to regulate or change the direction and achieve the purpose of controlling the action of the air cylinder I6 through the compressed air of the air pressure reducing valve I9. The cylinder I6 is mounted on the cylinder mounting bracket 36, the cylinder mounting bracket 36 is mounted on the G10 epoxy plate panel 17, the cylinder I6 is connected with the upper end of the insulating rod 38 through a cylinder shaft and is fixed by screws, the lower end of the insulating rod 38 is connected with the upper end of the current rod I9, the current rod I9 is fixed by screws, and then the current rod I9 is positioned in a channel formed by two groups of electrode fixing clamp assemblies on the G10 epoxy plate panel 17, and the current rod I9 can only linearly move in the channel. The insulating rod 38 is made of polytetrafluoroethylene, and has the functions of insulating, isolating cold and fixing the current rod I9, and the cold isolating function of the insulating rod can prevent the cylinder component (comprising a sealing ring) from being damaged by the ultralow temperature (-196 ℃) of liquid nitrogen. The electrode fixing clip assembly includes: an electrode fixing clip 42, an electrode clip spacer 43, an electrode holder 44, and the like. The current rod I9 is provided with an ear for connecting a flat copper strip (used for connecting a current source, the material is red copper T1), the flat copper strip is connected with a screw for fixing in operation, the lower end of the current rod I9 is a working surface, and the working surface is matched with the grooved I41 and the grooved pad 39. The slotted I41 and slotted shim 39 are mounted on the G10 epoxy panel 17. A bridge plate 34 of polytetrafluoroethylene material is provided between the two grooves of the two voltage bars 10, 15, and is also mounted on the G10 epoxy plate panel 17. The working surfaces at the lower ends of the current rods I9 and II 16 are respectively provided with metal indium I12, and the two current rods press the superconducting detection belt on the corresponding two belt grooves I41 after falling down, so that the current of the current source passes through the superconducting detection belt. The working surfaces at the lower ends of the voltage rod I10 and the voltage rod II 15 are respectively provided with metal indium II 13, and the two voltage rods press the superconducting detection belt on the corresponding two belt grooves II 40 after falling down so as to measure the voltage drop of the superconducting detection belt between the two voltage rod probes. The indium metal has good conductivity and softness, so the function of protecting the superconducting test strip can be achieved. The motion principle of the current rod I9 is as follows: the air pressure reducing valve 27 is opened to adjust the output air pressure to about 0.5MPa, the air cylinder I6 is controlled by the electromagnetic valve I29 to drive the current rod I9 to lift and drop, and the pneumatic speed regulating valve 35 plays a role in adjusting the lifting and dropping speed.
Because the cylinder axle can take place radial rotation and can make electric current stick or voltage stick take place rotatory when the cylinder moves, in order to prevent the emergence of this kind of condition, all be equipped with the location spout on four cylinders, set firmly a slide 37 on the insulating rod 38, be equipped with a location slider on the slide 37, the cylinder axle is along with insulating rod 38 slip in the location spout at flexible in-process location slider, so played the rotatory effect of restriction cylinder axle when moving, thereby ensured that electric current stick and voltage stick lower extreme working face do not take place the change of position form, and then furthest avoided the superconducting tape coating film layer not receive the destruction of rotational friction.
The detection steps of the four-lead measurement method of the measuring device adopting the crimping measurement form are as follows:
1. the current rod I9 and the current rod II 16 in the device are connected to a current source by flat copper strips, the voltage rod I10 and the voltage rod II 15 are connected to a nano-voltmeter by thin copper wires, the power supply and data wires of the two stepping motors 32 and 33, the two brakes 57, the encoder 45, the tension sensor 4, the infrared dryer 22 and the tension adjusting device 21 are connected to related equipment, an air source air pipe is communicated to the input end of the pneumatic pressure reducing valve 27, the pneumatic pressure reducing valve 27 is opened, the working pressure is adjusted to be about 0.5MPa, and at the moment, the two current rods and the two voltage rods are lifted (lifted to be the initial state of the system).
2. The feeding tray 30 and the receiving tray 23 with the superconducting detection belt 31 are installed in place, the superconducting detection belt 31 is led out from the feeding tray 30, and the superconducting detection belt 31 is installed to the receiving tray 23 through the tension sensor 4, the encoder assembly 5, the lower guide wheel I11, the belt grooves I41 below the two current rods, the belt grooves II 40 below the two voltage rods, the bridge plate 34, the lower guide wheel II 14, the upper guide wheel 19, the tension adjusting device 21 and the infrared dryer 22. Note that: the test strip must be installed to ensure that the coated surface must face upward as it passes through the grooves I41, II 40 and bridge 34.
3. The stepping motor 33 of the take-up tray 23 is started to give tension to the superconducting detection belt 31, and then the tension of the superconducting detection belt 31 is adjusted to the set value of the tension sensor 4 by the tension adjusting device 21.
4. Liquid nitrogen is input into the liquid nitrogen tank car 2, and the liquid level reaches the middle part of the tank car.
5. Turning on a computer, turning on superconducting current testing software (the whole software is divided into two parts, namely a control part and a detection part), inputting the diameter of a winding contact part of a detection belt through an encoder guide wheel 46 in a control software interface, and inputting the distance between test points (the distance between a voltage rod I10 and a voltage rod II 15) and the length of the whole belt to be tested after the system is adjusted; if the test point spacing of the system test strip is 1000mm, the control software will give out instruction in time according to the data signal provided by the encoder 45 during the system operation, control the unit detection travel (for example: 1000 mm) of the superconducting detection strip 31, and when the superconducting detection strip 31 runs to reach the set length, the control software displays the in-place signal and displays the travel distance and the accumulated travel distance. At this time, solenoid valves (serial numbers 25, 26, 28, 29) can be operated by "control software" to drive cylinders (serial numbers 6,7, 20, 24) to drop current bars (serial numbers 9, 16) and voltage bars (serial numbers 10, 15), after confirming that the detection belt is compacted on the belt groove, a current source and a nanovoltmeter are switched on, and superconducting current detection is performed under the control of "test software". After the superconducting current is detected, the current source is closed, the nanovoltmeter is closed, the current rod and the voltage rod are lifted by the driving of the air cylinder under the operation of 'control software', and then the process is repeated.
6. When all the superconducting detection belts 31 are detected, the control software sends out a prompt signal to wait for the next operation. When the detection is finished, the liquid nitrogen is recovered through the tank wagon ball valve 3, and the material receiving disc 23 is stored.
Claims (3)
1. The utility model provides a controllable superconductive belt critical current measuring device of tension, includes liquid nitrogen groove, monitored control system, four lead wires measurement system and superconductive belt advancing system, superconductive belt in the superconductive belt advancing system twines on the blowing dish and its other end accomodates on receiving the charging tray after winding tension sensor, encoder assembly and a plurality of guide wheels, its characterized in that: the tension adjusting device comprises an elastic wheel assembly, a sliding block, a fixed seat and a push rod, wherein the elastic wheel assembly is connected with the sliding block into a whole, a sliding groove is arranged in the fixed seat, the sliding block is arranged in the sliding groove in a sliding way and can drive the elastic wheel assembly to move, a spring is arranged on one side of the sliding block in the sliding groove, one end of the push rod extends into the sliding groove and is propped against one end of the spring through a top plate connected with the end of the push rod, the other end of the spring is propped against the sliding block after being compressed so that the superconductive belt tensioned on the elastic wheel assembly has an initial tension, the initial position of the sliding block in the sliding groove is adjusted by adjusting the length of the ejector rod extending into the sliding groove so as to adjust the initial tension of the superconducting tape, one side of the outer fixed seat of the sliding groove is provided with an induction device for detecting the moving direction of the sliding block in the advancing process of the superconducting tape and feeding back an excessive loosening or excessive tightening signal of the superconducting tape to a monitoring system according to the moving direction of the sliding block, and the monitoring system controls the running speed of each of the discharging disc and the receiving disc according to the signals and tension data fed back by the induction device and the tension sensor;
the magnetic switch at the corresponding end of the chute senses that the magnetic ring is close to the chute so as to send out an excessive loosening or excessive tightening signal of the superconducting tape to the monitoring system when the sliding block slides towards one end of the chute in the advancing process of the superconducting tape;
the sliding groove penetrates through two end faces of the fixing seat, a sliding groove end cover is fixed on one end face of the fixing seat, a push rod support is arranged opposite to the other end face of the fixing seat, one end of the push rod penetrates through a threaded hole formed in the push rod support and then extends into the sliding groove from one end of the fixing seat, and a rod body of the push rod is in threaded fit with the threaded hole.
2. A tension-controllable critical current measuring apparatus for a superconducting tape as claimed in claim 1, wherein: the four-lead measuring system comprises two current bars, two voltage bars, four air cylinders, four electromagnetic valves and a gas pressure reducing valve, wherein the four air cylinders respectively drive the two current bars and the two voltage bars to move so as to realize lifting and falling actions, the gas pressure reducing valve is connected with the four electromagnetic valves through air pipes, the four electromagnetic valves are connected with the corresponding air cylinders through the air pipes, and the monitoring system respectively controls the movement of the four air cylinders through the four electromagnetic valves.
3. A tension-controllable critical current measuring apparatus for a superconducting tape as claimed in claim 2, wherein: the cylinder shafts of the four cylinders are connected with one end of a corresponding current rod or voltage rod through insulating rods, positioning sliding grooves are formed in each cylinder, a sliding seat is fixedly arranged on each insulating rod, a positioning sliding block is arranged on each sliding seat, and the positioning sliding blocks slide in the positioning sliding grooves along with the insulating rods in the stretching process of the cylinder shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960810.0A CN107505493B (en) | 2016-11-04 | 2016-11-04 | Tension-controllable superconducting strip critical current measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960810.0A CN107505493B (en) | 2016-11-04 | 2016-11-04 | Tension-controllable superconducting strip critical current measuring device |
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| Publication Number | Publication Date |
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| CN107505493A CN107505493A (en) | 2017-12-22 |
| CN107505493B true CN107505493B (en) | 2023-09-26 |
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| CN201610960810.0A Active CN107505493B (en) | 2016-11-04 | 2016-11-04 | Tension-controllable superconducting strip critical current measuring device |
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| CN112327229A (en) * | 2020-12-02 | 2021-02-05 | 东部超导科技（苏州）有限公司 | Twisting device and method for detecting twisting performance of high-temperature superconducting tape |
| CN114280514A (en) * | 2021-12-30 | 2022-04-05 | 东部超导科技（苏州）有限公司 | Method and device for quickly positioning critical current low point of superconducting strip |
Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580757A (en) * | 2003-08-05 | 2005-02-16 | 北京有色金属研究总院 | High temperature super conducting strip contactless nondestructive magnetic measuring method and device |
| CN101268358A (en) * | 2005-12-28 | 2008-09-17 | 住友电气工业株式会社 | Method of measuring critical electric current value of superconducting wire |
| JP2009270916A (en) * | 2008-05-07 | 2009-11-19 | Fujikura Ltd | Critical current measuring instrument |
| CN101975897A (en) * | 2010-09-14 | 2011-02-16 | 上海电缆研究所 | High-temperature superconductive long tape critical current continuous measurement and rewinding device |
| CN102030223A (en) * | 2010-11-26 | 2011-04-27 | 哈尔滨工业大学 | Constant-tension winding machine for niobium titanium-copper superconducting solenoid coils |
| CN102359905A (en) * | 2011-09-28 | 2012-02-22 | 兰州大学 | Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor |
| CN102520017A (en) * | 2011-12-04 | 2012-06-27 | 中国科学院电工研究所 | Bending characteristic measurement device for high-temperature superconducting tape |
| CN102664078A (en) * | 2012-05-22 | 2012-09-12 | 白银有色集团股份有限公司 | System for automatically controlling tension of stranded cables of superconducting conductor |
| KR20120111144A (en) * | 2011-03-31 | 2012-10-10 | 한국전기연구원 | Critical current measurement devices under strain and stress |
| CN102788837A (en) * | 2012-08-15 | 2012-11-21 | 西南交通大学 | Multifunctional critical-current uniformity non-destructive and continuous detection device of superconducting band material |
| CN102820097A (en) * | 2012-08-22 | 2012-12-12 | 西部超导材料科技股份有限公司 | Automatic tension adjusting and breakage detection device for superconducting wire production |
| CN202700749U (en) * | 2012-08-04 | 2013-01-30 | 上海上创超导科技有限公司 | Dynamic curtain coating apparatus for high-temperature superconductive coated conductor |
| CN202735499U (en) * | 2012-08-15 | 2013-02-13 | 西南交通大学 | Multifunctional superconductive strip critical current uniformity lossless continuously detecting device |
| CN102955087A (en) * | 2012-11-06 | 2013-03-06 | 中国科学院电工研究所 | Equipment for measuring critical current characteristics of high temperature superconductivity long strip |
| CN202839133U (en) * | 2012-05-22 | 2013-03-27 | 白银有色集团股份有限公司 | System for automatically controlling tension of stranded cables of superconducting conductors |
| CN104133100A (en) * | 2014-07-14 | 2014-11-05 | 上海超导科技股份有限公司 | Device and method for continuously measuring critical current of high-temperature superconducting tape |
| CN104198800A (en) * | 2014-09-17 | 2014-12-10 | 富通集团（天津）超导技术应用有限公司 | Critical-current testing device for high-temperature superconductor strips |
| CN104914331A (en) * | 2015-05-25 | 2015-09-16 | 中国科学院合肥物质科学研究院 | Measurement apparatus and measurement method for critical current and n value index of high-temperature superconductive tape |
| CN105067677A (en) * | 2015-08-05 | 2015-11-18 | 西部超导材料科技股份有限公司 | Superconductive wire rod Cu/Sc test device |
| KR20160028796A (en) * | 2014-09-04 | 2016-03-14 | 두산중공업 주식회사 | Roller Assembly, and Apparatus for measuring critical current including the same |
| CN105869782A (en) * | 2016-04-06 | 2016-08-17 | 上海交通大学 | Preparation method of high-temperature superconducting line |
| CN105974178A (en) * | 2016-06-03 | 2016-09-28 | 洛阳理工学院 | Crimping measurement device for high temperature superconductive tape critical current |
| CN205665294U (en) * | 2016-06-03 | 2016-10-26 | 洛阳理工学院 | High -temperature superconducting tape critical current's crimping measuring device |
| CN206348380U (en) * | 2016-11-04 | 2017-07-21 | 洛阳理工学院 | A kind of controllable superconduction belt material critical current measuring device of tension force |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101048884B1 (en) * | 2009-12-14 | 2011-07-13 | 한국전기연구원 | Continuous critical current measuring device |
-
2016
- 2016-11-04 CN CN201610960810.0A patent/CN107505493B/en active Active
Patent Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1580757A (en) * | 2003-08-05 | 2005-02-16 | 北京有色金属研究总院 | High temperature super conducting strip contactless nondestructive magnetic measuring method and device |
| CN101268358A (en) * | 2005-12-28 | 2008-09-17 | 住友电气工业株式会社 | Method of measuring critical electric current value of superconducting wire |
| JP2009270916A (en) * | 2008-05-07 | 2009-11-19 | Fujikura Ltd | Critical current measuring instrument |
| CN101975897A (en) * | 2010-09-14 | 2011-02-16 | 上海电缆研究所 | High-temperature superconductive long tape critical current continuous measurement and rewinding device |
| CN102030223A (en) * | 2010-11-26 | 2011-04-27 | 哈尔滨工业大学 | Constant-tension winding machine for niobium titanium-copper superconducting solenoid coils |
| KR20120111144A (en) * | 2011-03-31 | 2012-10-10 | 한국전기연구원 | Critical current measurement devices under strain and stress |
| CN102359905A (en) * | 2011-09-28 | 2012-02-22 | 兰州大学 | Multi-point testing system for dynamic surface magnetic field and thermal distribution of superconductor |
| CN102520017A (en) * | 2011-12-04 | 2012-06-27 | 中国科学院电工研究所 | Bending characteristic measurement device for high-temperature superconducting tape |
| CN102664078A (en) * | 2012-05-22 | 2012-09-12 | 白银有色集团股份有限公司 | System for automatically controlling tension of stranded cables of superconducting conductor |
| CN202839133U (en) * | 2012-05-22 | 2013-03-27 | 白银有色集团股份有限公司 | System for automatically controlling tension of stranded cables of superconducting conductors |
| CN202700749U (en) * | 2012-08-04 | 2013-01-30 | 上海上创超导科技有限公司 | Dynamic curtain coating apparatus for high-temperature superconductive coated conductor |
| CN202735499U (en) * | 2012-08-15 | 2013-02-13 | 西南交通大学 | Multifunctional superconductive strip critical current uniformity lossless continuously detecting device |
| CN102788837A (en) * | 2012-08-15 | 2012-11-21 | 西南交通大学 | Multifunctional critical-current uniformity non-destructive and continuous detection device of superconducting band material |
| CN102820097A (en) * | 2012-08-22 | 2012-12-12 | 西部超导材料科技股份有限公司 | Automatic tension adjusting and breakage detection device for superconducting wire production |
| CN102955087A (en) * | 2012-11-06 | 2013-03-06 | 中国科学院电工研究所 | Equipment for measuring critical current characteristics of high temperature superconductivity long strip |
| CN104133100A (en) * | 2014-07-14 | 2014-11-05 | 上海超导科技股份有限公司 | Device and method for continuously measuring critical current of high-temperature superconducting tape |
| KR20160028796A (en) * | 2014-09-04 | 2016-03-14 | 두산중공업 주식회사 | Roller Assembly, and Apparatus for measuring critical current including the same |
| CN104198800A (en) * | 2014-09-17 | 2014-12-10 | 富通集团（天津）超导技术应用有限公司 | Critical-current testing device for high-temperature superconductor strips |
| CN104914331A (en) * | 2015-05-25 | 2015-09-16 | 中国科学院合肥物质科学研究院 | Measurement apparatus and measurement method for critical current and n value index of high-temperature superconductive tape |
| CN105067677A (en) * | 2015-08-05 | 2015-11-18 | 西部超导材料科技股份有限公司 | Superconductive wire rod Cu/Sc test device |
| CN105869782A (en) * | 2016-04-06 | 2016-08-17 | 上海交通大学 | Preparation method of high-temperature superconducting line |
| CN105974178A (en) * | 2016-06-03 | 2016-09-28 | 洛阳理工学院 | Crimping measurement device for high temperature superconductive tape critical current |
| CN205665294U (en) * | 2016-06-03 | 2016-10-26 | 洛阳理工学院 | High -temperature superconducting tape critical current's crimping measuring device |
| CN206348380U (en) * | 2016-11-04 | 2017-07-21 | 洛阳理工学院 | A kind of controllable superconduction belt material critical current measuring device of tension force |
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