A cooling and lubrication device for stranding superconducting cables

Abstract

This utility model relates to the field of superconducting cable stranding technology and discloses a cooling and lubrication device for superconducting cable stranding. It includes an inverted plastic bottle filled with anhydrous alcohol; a small through-hole in the center of the bottle cap allows for continuous alcohol dripping; the plastic bottle is fixed by an upper and lower ring, the lower ring having a hole and curved surface to mate with the bottle cap for stability; a support is made of bent flat iron, its short end fixed to the upper ring and its long end fixed to the lower ring, the long end having a keyway for adjustable connection to a molding frame via screws; a collection box is placed below the molding frame to collect residual liquid. The alcohol evaporates rapidly at room temperature, leaving no residue and causing no corrosion, effectively reducing the coefficient of friction, preventing scratches, wear, and localized temperature rise, and ensuring superconducting performance. The device has a simple structure, low cost, convenient installation, and requires no maintenance. It can be quickly integrated with existing stranding machines and is suitable for the industrial stranding of various superconducting cables.

Description

Technical Field

[0001] This utility model relates to the field of superconducting cable stranding technology, and in particular to a cooling and lubrication device for superconducting cable stranding. Background Technology

[0002] Superconducting cables are a highly efficient energy transmission technology that utilizes the zero-resistance characteristic of superconducting materials at low temperatures to transmit electricity. The stranding of superconducting cables is a critical step in the manufacturing process, requiring extremely high precision. This is intended to enhance the flexibility of the superconducting cable to adapt to complex laying environments; ensure uniform current distribution among the superconducting wires to avoid localized overheating; and, through the stranding of multiple superconducting wires, offset magnetic field inhomogeneities and reduce AC losses (such as eddy current losses).

[0003] During the stranding process of superconducting cables, friction occurs when multiple superconducting wires (such as Nb3Sn or NbTi) come into contact, causing surface damage. Anhydrous alcohol evaporates rapidly at room temperature without leaving any residue, making it a suitable temporary lubricant during the stranding process. This effectively reduces the coefficient of friction, prevents localized temperature rises and damage to the material's microstructure, thus protecting the superconducting performance. Furthermore, alcohol is non-corrosive to copper substrates or superconducting materials, and short-term contact will not trigger a chemical reaction, ensuring material stability.

[0004] Designing a reliable cooling and lubrication device for stranded superconducting cables to reduce surface damage caused by friction when multiple superconducting wires come into contact with each other and to avoid damage to the superconducting tape has always been a difficult problem for those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a cooling and lubrication device for stranding superconducting cables to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A cooling and lubrication device for stranding superconducting cables, comprising: An inverted plastic bottle with its opening facing downwards, the plastic bottle containing anhydrous alcohol; The bottle cap is threadedly connected to the plastic bottle, and the center of the bottle cap has a small through hole for continuous dripping of anhydrous alcohol. The upper and lower rings of the plastic bottle are fitted and fixed. The lower ring has small holes, large holes and arc surfaces that match the shape of the bottle cap to ensure stability when placed upside down. The bracket is made of a flat iron bent into a short horizontal end, a vertical end and a long horizontal end. The short horizontal end is fixed to the outer end of the upper ring, and the long horizontal end is fixed to the small end of the lower ring. A keyway is machined on the long horizontal end. The bracket is adjustablely fastened to the mold frame by means of a hexagonal head screw, a nut, and a washer, wherein the hexagonal head screw passes through a keyway and is threadedly connected to the upper cover plate of the mold frame; A storage box, placed below the molding rack, is used to collect any excess anhydrous alcohol that drips.

[0007] The top of the plastic bottle is machined with a through hole for adding anhydrous alcohol to the bottle or recovering the remaining liquid in the storage box.

[0008] The outer end face of the lower ring has several viewing holes in the vertical direction for observing the level of anhydrous alcohol in the bottle.

[0009] The keyway and the internal hexagonal head screw have a clearance fit, allowing the device to be adjusted in both the circumferential and vertical directions.

[0010] The plastic bottle is a mineral water bottle.

[0011] The vertical center lines of the upper and lower rings coincide.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: This utility model has a simple structure, is easy to manufacture, and is convenient to install and use. It has the advantages of being easy to promote and easy to install. By using this utility model, the surface damage caused by friction when multiple superconducting wires come into contact with each other can be reduced, the damage to the superconducting tape can be avoided, and the manufacturing cost of superconducting cables can be effectively reduced. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model during the stranding process of a superconducting cable.

[0014] Figure 2 This is a front view of the connection between the upper and lower rings and the bracket in this utility model.

[0015] Figure 3 This is a top view of the connection between the upper and lower rings and the bracket in this utility model.

[0016] Figure 4 This is a top view of the connection between the upper and lower rings and the bracket in this utility model.

[0017] Attached Figures and Their Names: 1. Multi-strand superconducting wire; 2. Compression molding frame; 2.1. Top cover plate; 3. Pad block; 4. Parallel wire mold; 5. Storage box; 6. Single-strand superconducting wire; 7. Splitting reel; 8. Ceramic eye; 9. Bottle cap; 10. Lower ring; 10.1. Small hole; 10.2. Small end; 10.3. Large hole; 10.4. Large end; 10.5. Curved surface; 11. Anhydrous alcohol; 12. Upper ring; 12.1. Outer end; 12.2. Inner hole; 13. Plastic bottle; 13.1. Through hole; 14. Support; 14.1. Horizontal short end; 14.2. Vertical end; 14.3. Horizontal long end; 14.3.1. Keyway; 15. Socket head cap screw; 16. Nut; 17. Washer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] like Figure 1-4 As shown, this utility model provides a cooling and lubrication device for stranding superconducting cables, which consists of a bottle cap 9, a storage box 5, a lower ring 10, anhydrous alcohol 11, an upper ring 12, a plastic bottle 13, a bracket 14, an internal hexagonal head screw 15, multiple nuts 16 and multiple washers 17.

[0021] The anhydrous alcohol 11 used as a temporary lubricant during the stranding of the superconducting cable is contained in a plastic bottle 13, which can be replaced by a mineral water bottle. The plastic bottle 13 is threadedly connected to the cap 9. By tightening the cap 9, the anhydrous alcohol 11 contained in the inverted plastic bottle 13 can be sealed. The top of the inverted plastic bottle 13 is machined with a through hole 13.1. The center of the cap 9, which is threaded to the plastic bottle 13, is also machined with a suitable small through hole according to the specific characteristics of the stranded superconducting material and the optimized amount of anhydrous alcohol 11 used based on the process parameters. This design facilitates the continuous outflow of anhydrous alcohol 11 from the small through hole of the cap 9, which can lubricate and cool the stranded superconducting cable in a timely manner. The through hole 13.1 machined at the top of the inverted plastic bottle 13 also facilitates the timely pouring of anhydrous alcohol 11 or excess anhydrous alcohol 11 collected in the storage box 5 into the plastic bottle.

[0022] The upper outer circumference of the inverted plastic bottle 13 fits into the inner hole 12.2 of the upper ring 12. The bottle cap 9, which is screwed onto the inverted plastic bottle 13, and the lower end of the inverted plastic bottle 13 are sequentially fitted into the small hole 10.1, the large hole 10.3, and the arc surface 10.5 of the lower ring 10, ensuring that the plastic bottle 13 and bottle cap 9 assembly containing anhydrous alcohol 11 are very stable when placed upside down. The large end 10.4 of the lower ring 10 is also machined into an arc surface with the same spacing as the arc surface 10.5, which allows for good control of the external dimensions of the cooling and lubrication device. The outer end 12.1 of the upper ring 12 and the small end 10.2 of the lower ring 10 are respectively connected to the horizontal short end 14.1 and the... The horizontal long end 14.3 is welded together; the horizontal short end 14.1, vertical end 14.2, and horizontal long end 14.3 of the bracket 14 are machined from a single flat iron. The height of the vertical end 14.2 is mainly determined by the height of the plastic bottle 13. The horizontal short end 14.1 and the horizontal long end 14.3 are both perpendicular to the two ends of the vertical end 14.2 respectively; a keyway 14.3.1 is machined at a suitable position on the horizontal long end 14.3 of the bracket 14. The spacing of the keyway 14.3.1 is clearance-fitted with the internal hexagonal head screw 15. The machined keyway 14.3.1 facilitates the adjustment of the cooling and lubrication device in the circumferential direction; the vertical center lines of the upper ring 12 and the lower ring 10 coincide.

[0023] The upper cover plate 2.1 of the molding frame 2 has a screw hole machined at a suitable position for threaded connection with an internal hexagon head screw 15. The cooling and lubrication device can be fastened to the upper cover plate 2.1 of the molding frame 2 by tightening the internal hexagon head screw 15 that passes through the keyway 14.3.1 and multiple washers 17 and is threaded to the upper cover plate 2.1. When fastening the cooling and lubrication device to the upper cover plate 2.1 of the molding frame 2, multiple nuts 16 that are threaded to the internal hexagon head screw 15 need to be screwed into the two end faces of the keyway 14.3.1 and the upper cover plate 2.1. The position of the cooling and lubrication device in the vertical direction can be adjusted by adjusting the multiple nuts 16.

[0024] The single-strand superconducting wire 6 passing through the ceramic eye 8 on the cantilever single twister or cage twister distribution plate 7 is twisted by the equipment and then twisted into multi-strand superconducting wire 1 by the paralleling die 4; the paralleling die 4 is pressed into a suitable position on the pressing die frame 2 by two upper and lower pads 3; the storage box 5 needs to be placed in a suitable position on the pressing die frame 2 so that the excess anhydrous alcohol 11 flowing down can drip into the storage box 5 in time.

[0025] As a further improvement of this utility model, if multiple viewing holes are machined in the vertical direction on the outer end face of the lower ring 10, the position of anhydrous alcohol 11 in the inverted plastic bottle 13 can be observed at any time, which can further improve the reliability and stability of the cooling and lubrication device.

[0026] The working principle of this utility model is as follows: 1) Based on the installation position dimensions of the cantilever single twister or cage twister splitter 7, paralleling die 4, and pressing die frame 2, and in conjunction with the above technical solutions, design a drawing of a cooling and lubrication device for superconducting cable stranding.

[0027] 2) Based on the design drawings of a cooling and lubrication device for stranding superconducting cables, and considering the quantity of the cooling and lubrication device to be installed, process each lower ring 10, each upper ring 12, each storage box 5 and each bracket 14 that meet the actual requirements, and prepare the required hexagon socket head cap screws 15, nuts 16 and washers 17.

[0028] 3) Next, according to the drawing requirements of a cooling and lubrication device for superconducting cable stranding, assemble multiple sets of the cooling and lubrication device in sequence according to the drawing requirements.

[0029] 4) With the machine stopped, machine threaded holes for threaded connection with hexagonal head screws 15 at appropriate positions on the upper cover plate 2.1 of each mold frame 2. Then, by tightening the hexagonal head screws 15 that pass through the keyway 14.3.1 and multiple washers 17 and are threaded to the upper cover plate 2.1, the cooling and lubrication device can be fastened to the upper cover plate 2.1 of the mold frame 2. When fastening the cooling and lubrication device to the upper cover plate 2.1 of the mold frame 2, multiple nuts 16 that are threaded to the hexagonal head screws 15 should also be installed on both ends of the keyway 14.3.1 and the upper cover plate 2.1. By adjusting the multiple nuts 16, the position of the cooling and lubrication device can be adjusted in the vertical and circumferential directions.

[0030] 5) At this point, the installation of a cooling and lubrication device for superconducting cable stranding, which is modified on a cantilever single twister or cage twister, is completed. After all the preparations for starting the machine are completed, it can be started normally.

Claims

1. A cooling and lubrication device for stranding superconducting cables, characterized in that, include: An inverted plastic bottle (13) with its opening facing downwards, the plastic bottle (13) containing anhydrous alcohol (11); The bottle cap (9) is threadedly connected to the plastic bottle (13), and the center of the bottle cap (9) has a small through hole for continuous dripping of anhydrous alcohol (11); The upper ring (12) and lower ring (10) of the plastic bottle (13) are fitted and fixed. The lower ring (10) has a small hole (10.1), a large hole (10.3) and an arc surface (10.5) that match the shape of the bottle cap (9) to ensure stability when placed upside down. The bracket (14) is made of a flat iron bent into a short horizontal end (14.1), a vertical end (14.2) and a long horizontal end (14.3). The short horizontal end (14.1) is fixed to the outer end (12.1) of the upper ring (12), and the long horizontal end (14.3) is fixed to the small end (10.2) of the lower ring (10). A keyway (14.3.1) is machined on the long horizontal end (14.3). The bracket (14) is adjustablely fastened to the mold frame (2) by means of an internal hexagonal head screw (15), a nut (16) and a washer (17), wherein the internal hexagonal head screw (15) passes through a keyway (14.3.1) and is threadedly connected to the upper cover plate (2.1) of the mold frame (2); A storage box (5) is placed below the molding frame (2) to collect excess anhydrous alcohol (11) that drips.

2. The cooling and lubrication device for stranding superconducting cables according to claim 1, characterized in that: The top of the plastic bottle (13) is machined with a through hole (13.1) for adding anhydrous alcohol (11) into the bottle or recovering the remaining liquid in the storage box (5).

3. The cooling and lubrication device for stranding superconducting cables according to claim 1, characterized in that: The outer end face of the lower ring (10) has several through holes in the vertical direction for observing the liquid level of anhydrous alcohol (11) in the bottle.

4. A cooling and lubrication device for stranding superconducting cables according to claim 1, characterized in that: The keyway (14.3.1) is clearance-fitted with the internal hexagonal head screw (15), allowing the device to be adjusted in both the circumferential and vertical directions.

5. A cooling and lubrication device for stranding superconducting cables according to claim 1, characterized in that: The plastic bottle (13) is a mineral water bottle.

6. A cooling and lubrication device for stranding superconducting cables according to claim 1, characterized in that: The vertical center lines of the upper ring (12) and the lower ring (10) coincide.

Images