CN218964302U

CN218964302U - Pressure welding device for high-temperature superconducting strip

Info

Publication number: CN218964302U
Application number: CN202320044263.7U
Authority: CN
Inventors: 陈志越; 韩云武; 喻志广; 黄逸佳
Original assignee: Shanghai Electric Cable Research Institute
Current assignee: Shanghai Electric Cable Research Institute
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-05-05
Anticipated expiration: 2033-01-06

Abstract

The utility model relates to a pressure welding device for a high-temperature superconducting tape, which comprises a base, a sliding plate, a tape clamp and an elastic pressing structure, wherein the upper end of the base is provided with a working plane, the working plane comprises a welding area and two pressing areas which are respectively positioned at two sides of the pressing area, the sliding plate is arranged on the base and can vertically move on the base, the tape clamp is arranged on the sliding plate and vertically moves along with the sliding plate, the tape clamp is positioned at the position of the pressing area, the tape clamp comprises a pressing plate which is positioned above the pressing area and is parallel to the pressing area, the pressing plates are arranged above the two pressing areas, and the elastic pressing structure is arranged between the sliding plate and the base and can apply elastic force for enabling the sliding plate to move downwards. The pressure welding device can fix and press the high-temperature superconducting tape, and effectively improve the welding quality of the superconducting tape.

Description

Pressure welding device for high-temperature superconducting strip

Technical Field

The utility model relates to the technical field of high-temperature superconducting materials, in particular to a pressure welding device for a high-temperature superconducting strip.

Background

Due to the limitation of manufacturing technology, high-temperature superconductive tapes with large lengths are difficult to stably produce at present. In normal use, the welding of two superconducting strips is generally realized by melting tin by using an electric iron, the surface of the high-temperature superconducting strip is generally decontaminated at present, then a layer of tin layer is plated on the upper surface and the lower surface of the welding by using the electric iron, the upper surface and the lower surface of the plated tin layer are tightly overlapped, the tin layer is melted again by using the iron head after the temperature of the electric iron is adjusted to a proper temperature, and the welding of the high-temperature superconducting strip can be completed after the melted tin is cooled. The improvement of the welding performance between the high-temperature superconducting tapes mainly depends on the control of temperature and pressure, so that uniform temperature and stable pressure are the guarantees of good welding.

At present, in the welding process, manual welding is often adopted, constant pressure is difficult to be applied to the strip, so that the welding performance of the strip cannot be ensured, and the contact resistance value is higher. High temperature superconducting tapes generally operate in a liquid nitrogen environment, and higher contact resistance values can result in more liquid nitrogen consumption and reduced critical current values of the high temperature superconducting tapes.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model is to provide a pressure welding device for a high-temperature superconducting tape, which can fix and press the high-temperature superconducting tape, and effectively improve the welding quality of the superconducting tape.

In order to achieve the above object, the utility model provides a pressure welding device for a high-temperature superconducting tape, comprising a base, a sliding plate, a tape clamp and an elastic pressing structure, wherein the upper end of the base is provided with a working plane, the working plane comprises a welding area and two pressing areas which are respectively positioned at two sides of the pressing area, the sliding plate is arranged on the base and can vertically move on the base, the tape clamp is arranged on the sliding plate and vertically moves along with the sliding plate, the tape clamp is positioned at the position of the pressing area, the tape clamp comprises pressing plates which are positioned above the pressing area and are parallel to the pressing area, the pressing plates are arranged above the two pressing areas, the elastic pressing structure is arranged between the sliding plate and the base, and can apply elastic force for enabling the sliding plate to move downwards to the sliding plate.

Further, the device also comprises a heating mechanism which is arranged on the base and can heat the working plane.

Further, a heating slot hole positioned below the working plane is formed in the base, and the heating mechanism comprises a heating rod arranged in the heating slot hole.

Further, a temperature detection mechanism for detecting a temperature at the working plane is also included.

Further, a plurality of pressing plates are arranged above the pressing areas.

Further, a sliding plate is respectively arranged on the front side and the rear side of the base, two strip clamps are arranged at the compacting area, and the two strip clamps are respectively arranged on the sliding plates on the two sides.

Further, the side of the base is provided with a containing groove and a limiting baffle, the sliding plate is arranged in the containing groove, and the inner end face and the outer end face of the sliding plate are respectively abutted to the bottom face of the containing groove and the limiting baffle.

Further, the limit baffle is provided with a vertically extending strip-shaped guide hole, the slide plate is fixedly provided with a guide block, and the guide block is positioned in the strip-shaped guide hole.

Further, the elastic compression structure comprises a compression spring, wherein the upper end of the compression spring is connected to the upper end and the lower end of the sliding plate, and the upper end and the lower end of the compression spring are connected to the base.

Further, the strip clamp is hinged on the sliding plate, the strip clamp comprises a positioning side plate positioned at the upper side of the hinged point, the pressing plate is parallel to the compaction area when the positioning side plate abuts against the sliding plate, and the strip clamp can rotate until the positioning side plate is separated from the sliding plate; the elastic reset structure is arranged between the slide plate and the strip clamp, and the elastic force is applied to the positioning side plate to enable the positioning side plate to keep abutting against the slide plate.

As described above, the pressure welding apparatus according to the present utility model has the following advantageous effects:

through setting up base, slide, strip anchor clamps and elasticity and compress tightly the structure, during the use, two high temperature superconducting tape are placed on working plane, and two high temperature superconducting tape are located two and compress tightly the region respectively, and the tip that both wait to weld is in welding region department butt joint in order to weld. After the superconducting strips are placed, the sliding plate drives the strip clamp to press downwards under the elasticity of the elastic pressing structure, so that the pressing plate presses the superconducting strips, both the two superconducting strips are fixed, and a certain pressure is applied, so that a welding position has a certain contact pressure, and the welding quality of the superconducting strips is effectively improved. The pressure welding device can fix and press the high-temperature superconducting tape, and effectively improve the welding quality of the superconducting tape.

Drawings

Fig. 1 is a schematic structural view of a pressure welding apparatus of the present utility model.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a right side view of fig. 1.

Description of the reference numerals

1. Base seat

11. Work plane

111. Compression zone

112. Welding area

12. Heating slot

13. Measuring slot

14. Accommodating groove

15. Limiting baffle

16. Strip-shaped guide hole

2. Skateboard

21. Guide block

22. Hinge seat

3. Strip clamp

31. Pressing plate

32. Positioning side plate

33. Operation panel

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper", "lower", "left", "right", "middle", etc. are used herein for convenience of description, but are not to be construed as limiting the scope of the utility model, and the relative changes or modifications are not to be construed as essential to the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a pressure welding apparatus for a high temperature superconducting tape, comprising a base 1, a slide plate 2, a tape clamp 3 and an elastic pressing structure, wherein a working plane 11 is provided at the upper end of the base 1, the working plane 11 comprises a welding area 112 and two pressing areas 111 respectively located at both sides of the pressing area 111, the slide plate 2 is mounted on the base 1 and can vertically move on the base 1, the tape clamp 3 is mounted on the slide plate 2 and vertically moves along with the slide plate 2, the tape clamp 3 is located at the position of the pressing area 111, the tape clamp 3 comprises a pressing plate 31 located above the pressing area 111 and parallel to the pressing area 111, the pressing plates 31 are provided above both the pressing areas 111, and the elastic pressing structure is arranged between the slide plate 2 and the base 1 and can apply an elastic force for moving the slide plate 2 downward.

The basic working principle of the pressure welding device related by the utility model is as follows: in use, the slide plate 2 and the strip clamp 3 thereon are moved up by a suitable distance to place two high temperature superconductive strips on the working plane 11, wherein the working plane 11 is preferably rectangular, in this application, for convenience of explanation, referring to fig. 1, the length direction of the working plane 11 is taken as the left-right direction, the middle area of the working plane 11 is a welding area 112, and the left-right side areas are compression areas 111. The two high temperature superconductive tapes are respectively positioned on the two compacting areas 111, and the ends to be welded of the two high temperature superconductive tapes are butted at the welding area 112 for welding. After the superconducting strips are placed, the sliding plate 2 drives the strip clamp 3 to press downwards under the elasticity of the elastic pressing structure, so that the pressing plate 31 presses on the superconducting strips, thereby fixing the two superconducting strips, applying a certain pressure, enabling the welding position to have a certain contact pressure, and effectively improving the welding quality of the superconducting strips.

Referring to fig. 1 to 2, the present utility model is further described in the following by way of an embodiment:

in this embodiment, as a preferred design, the welding fixture further comprises a heating mechanism, wherein the heating mechanism is mounted on the base 1 and heats the working plane 11, and the temperature of the working plane 11 is increased during welding, so that high-temperature superconductivity is heated, and welding quality is provided. Specifically, referring to fig. 1 and 4, it is preferable that a heating slot 12 is provided in the base 1 below the working plane 11, the heating slot 12 extends in the left-right direction and is parallel to the working plane 11, the length thereof is preferably equal to or greater than the length of the working plane 11, the heating slot 12 is close to the working plane 11 and has a proper distance, a heating rod (not shown in the drawings) is included in the heating mechanism, the heating rod is in a rod-like structure, the length thereof is equal to or greater than the length of the working plane 11, and is installed in the heating slot 12, the base 1 is heated by a thermocouple heating rod, and the heating effect is ensured to be uniform. Of course, in other embodiments, other suitable existing configurations for the heating mechanism may be employed.

In this embodiment, further, a temperature detecting mechanism is further included, and the temperature detecting mechanism is used for detecting the temperature at the working plane 11, referring to fig. 1 and 4, specifically, a measuring slot 13 is provided in the base 1 below the working plane 11, the measuring slot 13 is located above the heating slot 12 and as close to the working plane 11 as possible, and the heating mechanism includes a thermocouple (not shown in the drawings) installed in the heating slot 12. During welding, the temperature of the base 1 at the working bottom surface is monitored through the thermocouple, so that the heating condition of the superconductive strip is monitored, and the welding quality is ensured.

In this embodiment, referring to fig. 1, 2 and 3, as a preferred design, two pressing plates 31 are disposed above the pressing area 111 to press the high temperature superconducting tape at different positions, but it is also possible to use more than two pressing plates in other embodiments. In the present embodiment, one slide plate 2 is mounted on each of the front and rear sides of the base 1, and two strip clamps 3 at the pressing areas 111 are mounted on the slide plates 2 on each of the two sides, and the strip clamps 3 at the same side at the two pressing areas 111 are mounted on one slide plate 2. By adopting the mode, each high-temperature superconducting tape is tightly pressed by the front tape clamp 3 and the rear tape clamp 3, so that the fixing effect is better.

In this embodiment, referring to fig. 1, 2 and 3, as a preferred design, the front and rear sides of the base 1 are provided with a containing groove 14 and a limit baffle 15, the slide plate 2 is installed in the containing groove 14, and the inner and outer end surfaces of the slide plate 2 are respectively abutted against the bottom surface of the containing groove 14 and the limit baffle 15, the slide plate 2 is limited in the containing groove 14 by the limit baffle 15 and moves up and down in the containing groove 14, and the bottom surface of the containing groove 14 and the limit baffle 15 limit the front and rear positions of the slide plate 2 at the same time. Preferably, the limit baffle 15 is provided with a vertically extending bar-shaped guide hole 16, the slide plate 2 is fixedly provided with a guide block 21, the guide block 21 is positioned in the bar-shaped guide hole 16, and when the slide plate 2 moves vertically, the guide block 21 moves in the bar-shaped guide hole 16 to limit the left and right positions of the slide plate 2, so that a guide effect is realized, the vertical movement of the slide plate 2 and the strip clamp 3 is ensured, and the pressure of the pressing plate 31 on the high-temperature superconducting strip is ensured to be perpendicular to the high-temperature superconducting strip.

In this embodiment, as a preferred design, the elastic pressing structure includes a pressing spring (not shown in the drawings), the upper end of which is connected to the slide plate 2, and the lower end of which is connected to the base 1, and the pressing spring is in a stretched state, and the elastic force provided by the pressing spring makes the slide plate 2 and the strip clamp 3 thereon downward, so that the pressing plate 31 can be pressed against the pressing area 111 of the working plane 11. The compression spring is preferably detachably arranged on the base 1 and the sliding plate 2, specifically, the base 1 and the sliding plate 2 are both provided with connecting seats, the ends of the compression spring are inserted into holes of the connecting seats to be connected, and therefore, the proper compression spring can be selected according to the pressure required by the superconducting tape during welding, and the application range of the lifting device is widened.

In the present embodiment, referring to fig. 1, 2 and 3, as a preferred design, the strip clamp 3 is hinged on the slide plate 2, specifically, a hinge seat 22 is fixed on the slide plate 2, the strip clamp 3 is mounted on the hinge seat 22 through a pin shaft, and the pin shaft is axially along the left-right direction, so that the strip clamp can rotate a certain angle range relative to the slide plate 2. The strip clamp 3 comprises a positioning side plate 32 positioned on the upper side of the hinging point, the pressing plate 31 is parallel to the compaction area 111 when the positioning side plate 32 abuts against the sliding plate 2, and the strip clamp 3 can be rotated until the positioning side plate 32 is separated from the sliding plate 2; the device also comprises an elastic reset structure, wherein the elastic reset structure is arranged between the slide plate 2 and the strip clamp 3, and applies elastic force to the strip clamp 3 to enable the positioning side plate 32 to keep abutting against the slide plate 2, namely, in a normal working state, the positioning side plate 32 of the strip clamp 3 abuts against the slide plate 2, so that the pressing plate 31 is kept horizontal with the working plane 11. Preferably, the strip clamp 3 further comprises an operation plate 33, the operation plate 33 is connected with the lower end of the positioning side plate 32, the operation plate 33 is located below the hinge seat 22, and the strip clamp 3 can be rotated by manually holding the operation plate 33. By adopting the design mode, the strip clamp 3 can rotate outwards relative to the positioning side plate 32, the positioning side plate 32 and the sliding plate 2 are opened, the pressing plate 31 leaves the working plane 11, the high-temperature superconducting strip is conveniently placed on the working plane 11, and the high-temperature superconducting strip is unloaded after welding is completed, and the high-temperature superconducting strip is automatically reset under the action of an elastic reset structure after the operation plate 33 is loosened. In this embodiment, referring to fig. 1 and 4, the pressing plate 31 is connected to the top end of the positioning side plate 32, the pressing plate 31 is perpendicular to the positioning side plate 32, the positioning side plates 32 on the front and rear sides of the pressing area 111 can also play a role in restraining the front and rear positions of the high-temperature superconducting tapes placed on the pressing area 111, so as to avoid the front and rear positions of the high-temperature superconducting tapes from being deviated, and when the high-temperature superconducting tapes are placed, the side edges of the high-temperature superconducting tapes are abutted against the positioning side plates 32 of the corresponding tape clamp 3, so that the side edges of the two high-temperature superconducting tapes can be ensured to be kept parallel and aligned.

In this embodiment, the elastic restoring structure includes a spring piece (not shown in the drawings) mounted on the sliding plate 2, the spring piece is connected with the operation plate 33 of the strip clamp 3, and the connection position is located at the lower side of the hinge point of the strip clamp 3, the spring piece is in a compressed energy storage state, and applies an elastic force to the strip clamp 3, so that the positioning side plate 32 abuts against the sliding plate 2, and the compression bar is parallel to the working plane 11 in the working state.

In this embodiment, the base 1 is preferably made of aluminum or stainless steel, and has good heat conductivity. The base 1 can be fixedly installed or hand-held for use, and the direct contact with high-heat-conductivity materials is avoided during the fixed installation, and the heat insulation protection is also required during the hand-held use. Both the slide plate 2 and the strip clamp 3 are also made of aluminium or stainless steel.

As can be seen from the above, the pressure welding apparatus in this embodiment has the following technical effects:

1. can realize the fixation and the pressure application of the high-temperature superconducting tape, and can realize the uniform heating of the high-temperature superconducting tape through the heating rod and the base, thereby effectively improving the welding quality of the superconducting tape

2. By using the welding device and matching with the surface treatment process of the strip and the selection of the solder, the welding resistance can be effectively controlled at the nano-European level; the instability of the existing manual welding is eliminated, the welding yield is improved, the workload of personnel is reduced, and the production efficiency is effectively improved.

In summary, the present utility model effectively overcomes the disadvantages of the prior art and has high industrial utility value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A pressure welding device for high temperature superconducting tape, characterized in that: including base (1), slide (2), band clamp (3) and elasticity compress tightly the structure, base (1) upper end is equipped with work plane (11), work plane (11) are including welding area (112) and two respectively are located compress tightly compression area (111) of regional (111) both sides, slide (2) are installed in base (1) and can be on base (1) vertical movement, band clamp (3) are installed on slide (2) and are moved along with slide (2) vertical, band clamp (3) are located compression area (111) position department, and band clamp (3) including being located compression area (111) top and compressing tightly clamp (31) of regional (111) parallel, the top of two compression areas (111) all is equipped with clamp plate (31), elasticity compress tightly the structure and set up between slide (2) and base (1), can apply the elasticity that makes slide (2) downstream to slide (2).

2. The pressure welding apparatus according to claim 1, wherein: the heating mechanism is mounted on the base (1) and can heat the working plane (11).

3. The pressure welding apparatus according to claim 2, wherein: the base (1) is provided with a heating slot hole (12) positioned below the working plane (11), and the heating mechanism comprises a heating rod arranged in the heating slot hole (12).

4. The pressure welding apparatus according to claim 2, wherein: also included is a temperature detection mechanism for detecting the temperature at the working plane (11).

5. The pressure welding apparatus according to claim 1, wherein: a plurality of pressing plates (31) are arranged above the pressing areas (111).

6. The pressure welding apparatus according to claim 5, wherein: the two sides of the front and rear of the base (1) are respectively provided with a sliding plate (2), two strip clamps (3) are arranged at the pressing area (111), and the two strip clamps (3) are respectively arranged on the sliding plates (2) at the two sides.

7. The pressure welding apparatus according to claim 1 or 5, wherein: the base (1) side is equipped with accommodation groove (14) and limit baffle (15), slide (2) are installed in accommodation groove (14), and slide (2) inside and outside terminal surface is close to with accommodation groove (14) bottom surface and limit baffle (15) respectively.

8. The pressure welding apparatus according to claim 7, wherein: the limiting baffle (15) is provided with a strip-shaped guide hole (16) extending vertically, the sliding plate (2) is fixedly provided with a guide block (21), and the guide block (21) is positioned in the strip-shaped guide hole (16).

9. The pressure welding apparatus according to claim 1, wherein: the elastic compression structure comprises a compression spring, wherein the upper end of the compression spring is connected to the upper end and the lower end of the sliding plate (2) and is connected to the base (1).

10. The pressure welding apparatus according to claim 1, wherein: the strip clamp (3) is hinged on the sliding plate (2), the strip clamp (3) comprises a positioning side plate (32) positioned at the upper side of the hinged point, the pressing plate (31) is parallel to the pressing area (111) when the positioning side plate (32) abuts against the sliding plate (2), and the strip clamp (3) can be rotated until the positioning side plate (32) is separated from the sliding plate (2); the elastic reset structure is arranged between the sliding plate (2) and the strip clamp (3), and the elastic force is applied to the positioning side plate (32) to enable the positioning side plate (32) to keep abutting against the sliding plate (2).