CN213456433U - Tension-torsion composite loading device for superconducting strip at low temperature - Google Patents
Tension-torsion composite loading device for superconducting strip at low temperature Download PDFInfo
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- CN213456433U CN213456433U CN202022985878.9U CN202022985878U CN213456433U CN 213456433 U CN213456433 U CN 213456433U CN 202022985878 U CN202022985878 U CN 202022985878U CN 213456433 U CN213456433 U CN 213456433U
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Abstract
The utility model discloses a tension-torsion composite loading device for superconducting tapes at low temperature, which comprises an upper clamp, a liquid nitrogen barrel, a lower clamp and a positioning and adjusting device, wherein the upper clamp comprises a fixed disc, a first insulating pull rod, an end cover, an angle measuring disc and an upper clamping end, the fixed disc is connected with the upper end of a stretcher, and the upper clamping end is used for fixing the upper end of the superconducting tapes; the lower clamp is arranged at the bottom of the liquid nitrogen barrel and comprises a second insulating pull rod and a lower clamping end, and the lower clamping end is used for fixing the lower end of the superconducting tape; the positioning adjusting device is arranged below the liquid nitrogen barrel and can adjust the position of the liquid nitrogen barrel in the X direction and the Y direction in the horizontal plane. The device can apply torsion of a certain angle while stretching, and is convenient for measuring the critical current value of the superconducting tape under the tension-torsion composite load.
Description
Technical Field
The utility model belongs to the technical field of superconducting tape experimental facilities, concretely relates to superconducting tape draws and turns round compound loading device under low temperature.
Background
The superconducting tape is accepted by the market due to the characteristics of high reliability, low cost, low alternating current loss, high critical current density and the like. As the application of superconducting tapes becomes more and more extensive, the high temperature superconducting coated tape (HTS) not only undergoes pure mechanical deformation in practical application, such as: uniaxial stretching, pure torsion, pure bending; and most of the cases are more complex composite mechanical deformation, such as tension-torsion composite deformation, tension-bending composite deformation and the like. The critical current is an important performance parameter of the superconducting tape, and the deformation has a great influence on the critical current and even causes the unrecoverable degradation of the critical current. Therefore, the research on the critical current change condition of the superconducting tape under the composite mechanical deformation is of great significance.
At present, most of clamps can only realize single mechanical deformation, but lack clamps for realizing tension torsion, most of torsion angles cannot be continuously applied, and the mechanical deformation and the critical current degradation conditions cannot be measured simultaneously in a low-temperature environment soaked by liquid nitrogen.
SUMMERY OF THE UTILITY MODEL
The utility model provides a superconductive strip draws under low temperature and turns round compound loading device, aim at solve present superconductive strip test, can't measure compound draw and turn round the problem of critical current under the condition.
Therefore, the utility model adopts the following technical scheme:
a tension-torsion composite loading device for superconducting strips at low temperature comprises an upper clamp, a liquid nitrogen barrel, a lower clamp and a positioning and adjusting device;
the upper clamp comprises a fixed disc, a first insulating pull rod, an end cover, an angle measuring disc and an upper clamping end; the fixed disc is horizontally arranged, the top of the fixed disc is connected with the upper end of the stretcher, the lower end of the fixed disc is provided with a circular cavity, the first insulating pull rod is vertically arranged, and the upper end of the first insulating pull rod extends into the cavity to be rotatably connected with the fixed disc; the end cover is fixed at the lower end of the fixed disc through a bolt, a horizontal angle measuring disc is fixedly connected to a position, below the fixed disc, of the first insulating pull rod, a gap is reserved between the angle measuring disc and the fixed disc, scale marks are arranged on the fixed disc and the angle measuring disc, and a rotating angle fixing device is arranged between the fixed disc and the angle measuring disc; the upper clamping end is arranged at the lower end of the first insulating pull rod;
the lower clamp is arranged at the bottom of the liquid nitrogen barrel and comprises a second insulating pull rod and a lower clamping end, the second insulating pull rod is vertically arranged, the lower end of the second insulating pull rod is fixedly connected with the bottom of the liquid nitrogen barrel, and the lower clamping end is arranged at the top of the second insulating pull rod;
the positioning adjusting device is arranged below the liquid nitrogen barrel and can adjust the position of the liquid nitrogen barrel in the X direction and the Y direction in the horizontal plane.
Furthermore, the scale marks on the fixed disc are positioned at the lower part of the fixed disc, and the scale marks on the angle measuring disc are positioned at the upper part of the angle measuring disc.
Furthermore, the rotating angle fixing device comprises a ratchet disc arranged at the lower end of the angle measuring disc and a pawl arranged on one side of the angle measuring disc, and the upper end of the pawl is connected with the fixed disc through a connecting rod.
Further, the positioning and adjusting device comprises a lower bottom plate, a lower adjusting plate and an upper adjusting plate from bottom to top, and the liquid nitrogen barrel is fixed at the top of the upper adjusting plate; an X-direction adjusting assembly is arranged between the lower bottom plate and the lower adjusting plate, and a Y-direction adjusting assembly is arranged between the lower adjusting plate and the upper adjusting plate.
Furthermore, the X-direction adjusting assembly comprises a sliding rail arranged on the upper surface of the lower bottom plate and a sliding groove arranged on the lower surface of the lower adjusting plate, and the sliding groove is connected with the sliding rail in a matching way; the screw rod is arranged between the lower bottom plate and the lower adjusting plate, the screw rod is parallel to the sliding rail, two ends of the screw rod are connected with supporting seats, the screw rod is in threaded connection with an adjusting seat, the adjusting seat is fixedly connected with the lower adjusting plate, one end of the screw rod is also connected with a hand wheel, and the hand wheel is rotated to drive the lower adjusting plate to move;
correspondingly, the Y-direction adjusting assembly also comprises a sliding rail, a sliding groove, a screw rod, a supporting seat, an adjusting seat and a hand wheel.
Further, the upper clamping end comprises a fixed plate, a first movable plate and a second movable plate, the fixed plate is fixedly connected with the first insulating pull rod, the first movable plate and the second movable plate are connected with the fixed plate through bolts, and the superconducting tape is clamped between the fixed plate and the first movable plate and between the superconducting tape and the second movable plate.
Furthermore, the fixed plate and the first movable plate are made of stainless steel, and the second movable plate is made of oxygen-free copper material.
Further, the first insulating pull rod and the second insulating pull rod are G10 pull rods.
The beneficial effects of the utility model reside in that:
1. the device can apply torsion of a certain angle while stretching, so that the critical current value of the superconducting tape under the tension-torsion composite load can be conveniently measured;
2. the device is simple and convenient to install, avoids the superconducting tape from slipping in an experiment, damages to the superconducting material inside the superconducting tape due to transverse compression load exerted on the superconducting tape by the stainless steel clamp, and avoids the influence of the circulation on an experiment result by using two clamps;
3. a positioning adjusting device is arranged below the liquid nitrogen barrel, and the position of the liquid nitrogen barrel can be adjusted in the X direction and the Y direction in the horizontal plane, so that the alignment of the upper clamp and the lower clamp can be ensured, and the accuracy of experimental data can be ensured;
4. the torsion angle is applied to the superconducting tape by rotating the angle measuring disc, the operation is easy in the experimental process, and the torsion angle can be accurately adjusted through the scale marks.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the rotation angle fixing device of the present invention;
in the figure: 1-fixed disc, 2-first insulating pull rod, 3-bearing, 4-end cover, 5-angle measuring disc, 6-ratchet disc, 7-pawl, 8-connecting rod, 9-upper clamp, 901-fixed plate, 902-first movable plate, 903-second movable plate, 10-lower clamp, 11-superconducting strip, 12-liquid nitrogen barrel, 13-second insulating pull rod, 14-lower bottom plate, 15-lower adjusting plate, 16-upper adjusting plate, 17-sliding rail, 18-sliding chute, 19-supporting seat, 20-lead screw and 21-hand wheel.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 and 2, the tension-torsion composite loading device for superconducting tapes at low temperature comprises an upper clamp 9, a liquid nitrogen barrel 12, a lower clamp 10 and a positioning and adjusting device.
The upper clamp 9 comprises a fixed disc 1, a first insulating pull rod 2, an end cover 4, an angle measuring disc 5 and an upper clamping end. Fixed disk 1 is circular and level setting, and the upper end of stretcher is connected at the top of fixed disk 1, and the lower extreme of fixed disk 1 is equipped with circular cavity. The first insulating pull rod 2 is vertically arranged, the top of the first insulating pull rod is connected with a bearing 3, and the first insulating pull rod 2 is rotatably connected with the fixed disc 1 through the bearing 3. The end cover 4 is connected to the lower end of the fixed plate 1 through bolts, and the end cover 4 is mainly used for fixing the position of the first insulating pull rod 2.
The first insulation pull rod 2 is fixedly connected with a horizontal angle measurement disc 5 at a position below the fixed disc 1, a gap with the width of 1-3 mm is reserved between the angle measurement disc 5 and the fixed disc 1, and the diameter of the angle measurement disc 5 is equal to that of the fixed disc 1. The fixed disc 1 and the angle measuring disc 5 are both provided with scale marks for measuring the size of the torsion angle, and the scale marks between the two scale marks represent 1 degree. The scale marks on the fixed disk 1 are positioned at the lower part of the fixed disk 1, and the scale marks on the angle measuring disk 5 are positioned at the upper part of the angle measuring disk 5. In addition, a rotation angle fixing device is arranged between the fixed disc 1 and the angle measuring disc 5, the rotation angle fixing device comprises a ratchet disc 6 arranged at the lower end of the angle measuring disc 5 and a pawl 7 arranged on one side of the angle measuring disc 5, and the upper end of the pawl 7 is connected with the fixed disc 1 through a connecting rod 8.
The upper clamping end is arranged at the lower end of the first insulation pull rod 2, the upper clamping end comprises a rectangular fixed plate 901, a first movable plate 902 and a third movable plate 903, the fixed plate 901 and the first movable plate 902 are made of stainless steel, and the second movable plate 903 is made of oxygen-free copper. The fixed plate 901 is fixedly connected with the first insulating tie rod 2, the first movable plate 902 and the third movable plate 903 are connected with the fixed plate 901 through bolts, and the superconducting tape is clamped between the fixed plate 901 and the first movable plate 902 and the third movable plate 903.
The lower clamp 10 is arranged at the bottom of the liquid nitrogen barrel 12 and comprises a second insulating pull rod 13 and a lower clamping end, the second insulating pull rod 13 is vertically arranged, the lower end of the second insulating pull rod is fixedly connected with the bottom of the liquid nitrogen barrel 12, the lower clamping end is arranged at the top of the second insulating pull rod 13, and the structure of the lower clamping end is the same as that of the upper clamping end. In addition, the first insulating pull rod 2 and the second insulating pull rod 13 are both G10 pull rods.
The positioning and adjusting device is arranged below the liquid nitrogen barrel 12 and can adjust the position of the liquid nitrogen barrel 12 in the X direction and the Y direction in the horizontal plane. The positioning and adjusting device comprises a lower bottom plate 14, a lower adjusting plate 15 and an upper adjusting plate 16 which are horizontally arranged at intervals from bottom to top, and the liquid nitrogen barrel 12 is fixed at the top of the upper adjusting plate 16. An X-direction adjusting component is arranged between the lower bottom plate 14 and the lower adjusting plate 15, and a Y-direction adjusting component is arranged between the lower adjusting plate 15 and the upper adjusting plate 16.
The X-direction adjusting assembly comprises a sliding rail 17 arranged on the upper surface of the lower base plate 14 and a sliding groove 18 arranged on the lower surface of the lower adjusting plate 15, and the sliding groove 18 is connected with the sliding rail 17 in a matching mode. The adjustable type screw rod mechanism is characterized by further comprising a screw rod 20 arranged between the lower bottom plate 14 and the lower adjusting plate 15, the screw rod 20 is parallel to the sliding rail 17, two ends of the screw rod 20 are connected with supporting seats 19, the screw rod 20 is connected with adjusting seats in a threaded mode, the adjusting seats are fixedly connected with the lower adjusting plate 15, one end of the screw rod 20 is further connected with a hand wheel 21, and the hand wheel 21 is rotated to drive the lower adjusting plate 15 to move. The Y-direction adjusting component comprises a corresponding slide rail 17, a slide groove 18, a lead screw 20, a supporting seat 19, an adjusting seat and a hand wheel 21.
The working principle of the utility model is as follows:
when the fixing disc type stretching machine is used, the fixing disc 1 is firstly connected to an upper clamping rod of the stretching machine, then the liquid nitrogen barrel 12 is placed under the upper clamping rod, and the lower bottom plate 14 is fixedly connected with the base. Then, the two hand wheels 21 are rotated to drive the liquid nitrogen barrel 12 to move in the horizontal plane, so that the upper clamping end and the lower clamping end are opposite to each other, and the alignment of the upper clamp 10 and the lower clamp 10 is ensured. Then, the upper and lower ends of the superconducting tape are fixed to the upper clamping rod and the lower clamping end, respectively, and the wires are connected to the two movable plates 902.
Then, the angle measuring disc 5 is rotated to the torsion angle required by the experiment, and as the angle measuring disc 5 is fixedly connected with the first insulating pull rod 2, the first insulating pull rod 2 also rotates along with the angle measuring disc 5, so that the superconducting tape is driven to be twisted. Under the limiting action of the ratchet wheel and the ratchet, the angle measuring disc 5 is fixed after rotating to a required angle. Then, liquid nitrogen was poured into the liquid nitrogen bucket 12, and the test was performed under the stretching action of a stretching machine.
After the test is finished under a certain torsion angle, the tensile force can be unloaded, the test is carried out after the tensile force is rotated to a new angle, and the test is carried out, so that the reciprocating experiment can simultaneously measure the critical current values under the conditions of different torsion and different tensile force magnitudes. When the angle measuring disc 5 rotates reversely, the ratchet is lifted.
It should be noted that the above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A tension-torsion composite loading device for a superconducting strip at a low temperature is characterized by comprising an upper clamp (9), a liquid nitrogen barrel (12), a lower clamp (10) and a positioning and adjusting device;
the upper clamp (9) comprises a fixed disc (1), a first insulating pull rod (2), an end cover (4), an angle measuring disc (5) and an upper clamping end; the fixed disc (1) is horizontally arranged, the top of the fixed disc (1) is connected with the upper end of a stretcher, a circular cavity is formed in the lower end of the fixed disc (1), the first insulating pull rod (2) is vertically arranged, and the upper end of the first insulating pull rod extends into the cavity to be rotatably connected with the fixed disc (1); the end cover (4) is fixed on the lower end face of the fixed disc (1) through bolts, a horizontal angle measuring disc (5) is fixedly connected to the position, below the fixed disc (1), of the first insulating pull rod (2), a gap is reserved between the angle measuring disc (5) and the fixed disc (1), scale marks are arranged on the fixed disc (1) and the angle measuring disc (5), and a rotation angle fixing device is arranged between the fixed disc (1) and the angle measuring disc (5); the upper clamping end is arranged at the lower end of the first insulating pull rod (2);
the lower clamp (10) is arranged at the bottom of the liquid nitrogen barrel (12), the lower clamp (10) comprises a second insulating pull rod (13) and a lower clamping end, the second insulating pull rod (13) is vertically arranged, the lower end of the second insulating pull rod is fixedly connected with the bottom of the liquid nitrogen barrel (12), and the lower clamping end is arranged at the top of the second insulating pull rod (13);
the positioning and adjusting device is arranged below the liquid nitrogen barrel (12), and the positioning and adjusting device can adjust the position of the liquid nitrogen barrel (12) in the X direction and the Y direction in the horizontal plane.
2. The tension-torsion combined loading device for the superconducting tape at low temperature according to claim 1, wherein the scale marks on the fixed disk (1) are positioned at the lower part of the fixed disk (1), and the scale marks on the angle measuring disk (5) are positioned at the upper part of the angle measuring disk (5).
3. The tension-torsion composite loading device for superconducting tapes at low temperature according to claim 2, wherein the rotation angle fixing device comprises a ratchet disc (6) arranged at the lower end of the angle measuring disc (5) and a pawl (7) arranged at one side of the angle measuring disc (5), and the upper end of the pawl (7) is connected with the fixed disc (1) through a connecting rod (8).
4. The tension-torsion composite loading device for the superconducting tape at low temperature according to claim 1, wherein the positioning and adjusting device comprises a lower bottom plate (14), a lower adjusting plate (15) and an upper adjusting plate (16) from bottom to top, and the liquid nitrogen barrel (12) is fixed on the top of the upper adjusting plate (16); an X-direction adjusting assembly is arranged between the lower bottom plate (14) and the lower adjusting plate (15), and a Y-direction adjusting assembly is arranged between the lower adjusting plate (15) and the upper adjusting plate (16).
5. The tension-torsion composite loading device for the superconducting tape at the low temperature according to claim 4, wherein the X-direction adjusting assembly comprises a slide rail (17) arranged on the upper surface of the lower base plate (14) and a slide groove (18) arranged on the lower surface of the lower adjusting plate (15), and the slide groove (18) is connected with the slide rail (17) in a matching way; the automatic adjusting mechanism is characterized by further comprising a lead screw (20) arranged between the lower bottom plate (14) and the lower adjusting plate (15), wherein the lead screw (20) is parallel to the sliding rail (17), two ends of the lead screw (20) are connected with supporting seats (19), the lead screw (20) is in threaded connection with an adjusting seat, the adjusting seat is fixedly connected with the lower adjusting plate (15), one end of the lead screw (20) is further connected with a hand wheel (21), and the hand wheel (21) is rotated to drive the lower adjusting plate (15) to move;
correspondingly, the Y-direction adjusting assembly also comprises a sliding rail (17), a sliding groove (18), a lead screw (20), a supporting seat (19), an adjusting seat and a hand wheel (21).
6. The tension-torsion composite loading device for the superconducting tapes at the low temperature according to claim 1, wherein the upper clamping end comprises a fixed plate (901), a first movable plate (902) and a second movable plate (903), the fixed plate (901) is fixedly connected with the first insulating tie rod (2), the first movable plate (902) and the second movable plate (903) are connected with the fixed plate (901) through bolts, and the superconducting tapes are clamped between the fixed plate (901) and the first movable plate (902) and the second movable plate (903).
7. The tension-torsion composite loading device for superconducting tapes at low temperature according to claim 6, wherein the fixed plate (901) and the first movable plate (902) are made of stainless steel, and the second movable plate (903) is made of oxygen-free copper.
8. The tension-torsion composite loading device for the superconducting tape at low temperature according to claim 1, wherein the end cap (4) and the angle measuring disc (5) have the same diameter.
9. The tension-torsion composite loading device for the superconducting tape at low temperature according to claim 1, wherein the first insulating pull rod (2) and the second insulating pull rod (13) are G10 pull rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022985878.9U CN213456433U (en) | 2020-12-14 | 2020-12-14 | Tension-torsion composite loading device for superconducting strip at low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022985878.9U CN213456433U (en) | 2020-12-14 | 2020-12-14 | Tension-torsion composite loading device for superconducting strip at low temperature |
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| Publication Number | Publication Date |
|---|---|
| CN213456433U true CN213456433U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022985878.9U Active CN213456433U (en) | 2020-12-14 | 2020-12-14 | Tension-torsion composite loading device for superconducting strip at low temperature |
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| CN (1) | CN213456433U (en) |
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- 2020-12-14 CN CN202022985878.9U patent/CN213456433U/en active Active
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