Superconducting cable stranding equipment for nuclear fusion

Abstract

The utility model discloses superconducting cable stranding equipment for nuclear fusion, which belongs to the technical field of superconducting cables for nuclear fusion and comprises a pay-off device, a tension detection device, a branching disc, a die holder integration device, a meter counting device, an electrical control cabinet and a take-up device. A die holder integration device, a branching disc, a meter counting device, an electrical control cabinet and a take-up device are sequentially arranged behind the pay-off device, and the pay-off device is formed by integrating a pay-off disc, a pay-off pre-twisting frame, a pay-off pre-twisting frame driving motor, a pay-off differential mechanism and a pay-off differential mechanism driving motor. The tension detection device is composed of a front tension detection fixed guide wheel, a rear tension detection fixed guide wheel and a tension sensing guide wheel, high-speed production of each stage of cable of the nuclear fusion superconducting cable is achieved, the requirements of the nuclear fusion stranding cable for active paying-off, complete back-twisting and automatic tension control functions of equipment are completely met, and it is guaranteed that the produced superconducting cable is free of twisting and high in quality. The problem that the superconducting cable is damaged due to inaccurate tension control is effectively prevented, and the performance of the superconducting cable is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of superconducting cables for nuclear fusion, and in particular relates to a superconducting cable stranding device for nuclear fusion. Background Art

[0002] Superconducting cables, with their zero resistance and complete anti-magnetic properties, have broad application prospects in today's world where low-carbon economic development is emphasized. Since they have the zero resistance characteristics of superconducting magnets, they generate almost no heat when in a superconducting state. Therefore, they can carry large currents without quenching the superconductivity, and are mainly used in the winding of magnet coils in the field of high-energy physics and other fields.

[0003] The conductor of a superconducting cable is made of several superconducting single wires of different diameters that are twisted in stages. At present, the twisting of each level of cable is done by a cage-type twisting machine. The cage-type twisting machine has a large twisting body and a low twisting speed, resulting in relatively low production efficiency. Since the superconducting cables for nuclear fusion are twisted in stages, the twisting volume of the first, second, and third level cables is large. Therefore, the twisting of the cage-type twisting machine cannot meet the requirements of the production schedule. If the schedule is to be guaranteed, it can only be met by increasing the number of cage twisting machines. In addition, the twisting tension must be strictly controlled during the twisting of each level of the superconducting cable, and the twisting must be completely untwisted to prevent the superconducting material from being damaged due to excessive tension or torsion during twisting, resulting in the overall current carrying capacity of the superconducting cable not meeting the design requirements. Utility Model Content

[0004] The technical problem to be solved by the utility model is to address the problem raised in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A superconducting cable stranding device for nuclear fusion comprises a pay-off device, a tension detection device, a wire distribution plate, a die base integrated device, a metering device, an electrical control cabinet and a wire take-up device. The die base integrated device, the wire distribution plate, the metering device, the electrical control cabinet and the wire take-up device are sequentially arranged behind the pay-off device. The pay-off device is integrated with a pay-off plate, a pay-off pre-twisting frame, a pay-off pre-twisting frame driving motor, a pay-off differential and a pay-off differential driving motor. The tension detection device is composed of two front and rear tension detection fixed guide wheels and a tension sensing guide wheel.

[0007] The wire-taking device is composed of a wire-taking drum, a twisting frame, a twisting frame driving motor, a wire-taking differential, a wire-taking differential driving motor, a wire-taking and arranging base, a wire-arranging guide rail and a wire-arranging walking driving motor. The twisting frame driving motor is connected to the twisting frame via a rotating shaft, and the wire-taking drum, the wire-taking differential and the wire-taking differential driving motor are integrated on the wire-taking and arranging base.

[0008] The line distribution plate is provided with a plurality of threading holes.

[0009] The mold base integrated device comprises a mold base, a slide bar is arranged on the mold base, and a line distribution plate is arranged on the slide bar.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The high-speed production of all levels of nuclear fusion superconducting cables has been achieved, which fully meets the requirements of nuclear fusion cable twisting. The equipment has the functions of active pay-off, complete back-twisting and automatic tension control, which ensures that the produced superconducting cables are free of twisting, effectively preventing the problem of superconducting cables being damaged due to inaccurate tension control, and ensuring the performance of superconducting cables. At present, the equipment has been maturely used in the twisting production of superconducting cables at all levels of the company, and has provided nearly 30KM of cables for domestic fusion devices, with stable product performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a main structural schematic diagram of an embodiment of the utility model.

[0013] Figure 2 It is a schematic diagram of the top structure of an embodiment of the utility model.

[0014] Figure 3 It is a principle diagram of a wire-releasing device according to an embodiment of the utility model.

[0015] Figure 4 It is a principle diagram of a wire take-up device according to an embodiment of the utility model.

[0016] Figure 5 It is a front view of the tension detection device of an embodiment of the utility model.

[0017] Figure 6 It is a top view of the tension detection device of an embodiment of the utility model.

[0018] Serial number and name of the accompanying drawings: 1. Pay-off device, 2. Tension detection device, 3. Tension sensing guide wheel, 4. Tension detection fixed guide wheel, 5. Superconducting single wire, 6. Twisted branch wire and die base integrated device, 7. Branching disk, 8. Die base, 9. Twisted superconducting strands, 10. Metering device, 11. Electrical control cabinet, 12. Take-up device, 13. Twisting frame, 14. Take-up disk, 15. Take-up differential drive motor, 16. Wire arrangement walking drive motor, 17. Screw, 18. Wire arrangement guide rail, 19. Take-up and Wire arrangement base, 20. Take-up differential, 21. Twisting frame drive motor, 22. Pay-off disk, 23. Pay-off pre-twisting frame, 24. Pay-off differential, 25. Pay-off differential drive motor, 26. Pay-off pre-twisting frame drive motor. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Example 1

[0022] like Figure 1-6 As shown, a superconducting cable stranding device for nuclear fusion described in the utility model includes a pay-off device 1, a tension detection device 2, a distribution plate 7, a die base integrated device 6, a metering device 10, an electrical control cabinet 11 and a take-up device 12. The die base integrated device 6, the distribution plate 7, the metering device 10, the electrical control cabinet 11 and the take-up device 12 are sequentially arranged behind the pay-off device 1. The pay-off device 1 is integrated by a pay-off plate 22, a pay-off pre-twisting frame 23, a pay-off pre-twisting frame drive motor 26, a pay-off differential 24, and a pay-off differential drive motor 25. The tension detection device 2 is composed of two front and rear tension detection fixed guide wheels 4 and a tension sensing guide wheel 3.

[0023] The wire taking-up device 12 is composed of a wire taking-up drum 14, a twisting frame 13, a twisting frame driving motor 21, a wire taking-up differential 20, a wire taking-up differential driving motor 15, a wire taking-up and arranging base 19, a wire arranging guide rail 18 and a wire arranging walking driving motor 16. The twisting frame driving motor 21 is connected to the twisting frame 13 through a rotating shaft, and the wire taking-up drum 14, the wire taking-up differential 20 and the wire taking-up differential driving motor 15 are integrated on the wire taking-up and arranging base 19.

[0024] The distribution plate 7 is provided with a plurality of threading holes.

[0025] The mold base integrated device 6 includes a mold base 8 , a slide bar is provided on the mold base 8 , and a distribution plate 7 is provided on the slide bar.

[0026] The equipment consists of a wire-paying device, a tension control device, a twisting die base, a meter counter and a wire-taking device.

[0027] The pay-off adopts a horizontal method. The number of pay-off devices is configured according to the number of twisted single wires. Each pay-off device consists of a pre-twisted frame, a frame drive motor, a differential, a differential drive motor, and a pay-off reel clamping device. When the equipment is running to pay-off, the pre-twisted frame is driven by the frame drive motor to rotate, and the pay-off reel is driven to rotate at the same speed through the transmission system. At this time, since the pre-twisted frame and the pay-off reel rotate synchronously, the superconducting single wire on the pay-off reel will not be released. Only when there is a rotation difference between the pre-twisted frame and the pay-off reel can the pay-off of the superconducting single wire be realized. This rotation difference is realized by the differential. The differential drive motor drives the differential. The differential drives the pay-off reel to rotate through the transmission system, realizing the active pay-off of the superconducting single wire. The speed of the differential drive motor is adjusted by the pay-off tension. The connection of the differential enables the pre-twisting frame and the take-up drum to rotate synchronously when starting and stopping the equipment, ensuring the stable release of the superconducting single wire. At the same time, the differential drive motor can independently control the speed of the pay-off drum according to the pay-off tension when the equipment is operating normally. The pre-twisting frame pre-twisted the superconducting single wire when it rotates, and the superconducting single wire twists once for each rotation of the pre-twisting frame.

[0028] The tension control device consists of a tension guide wheel and a tension sensor. During production, the superconducting single wire applies pressure to the tension guide wheel. The tension sensor converts the detected pressure value into an electrical signal and transmits it to the PLC control system. The PLC control system compares the tension signal with the tension setting value, and controls the speed of the differential drive motor to adjust the speed of the pay-off reel, thereby ensuring the stability of the pay-off tension. The tension control system realizes automatic detection, feedback, and control of the pay-off tension.

[0029] The wire-taking device consists of a twisting frame, a twisting frame driving motor, a take-up differential, a take-up reel clamping device, and a wire arrangement walking device. The twisting frame is driven by the twisting frame driving motor, and the take-up reel is driven to rotate at the same speed through the take-up differential and the transmission system. At this time, since the twisting frame and the take-up reel rotate synchronously, the stranded wire will not be collected on the take-up reel. The take-up can only be achieved when there is a rotation difference between the twisting frame and the take-up reel. This rotation difference is driven by the take-up differential drive motor to drive the take-up differential, and the take-up differential drives the take-up reel to rotate through the transmission system. The twisting frame speed is calculated from the twisting pitch according to the take-up speed (twisting frame speed = take-up speed / twisting pitch). After setting the pitch, the PLC calculates the twisting frame speed according to the take-up speed. The take-up speed is calculated according to the diameter of the take-up drum (the diameter of the empty drum and the inner width of the drum need to be set at the beginning of production. During production, the PLC automatically calculates the diameter of the winding layer according to the diameter of the twisted wire) to control the rotation speed of the take-up differential. The connection of the take-up differential realizes the synchronous rotation of the twisting frame and the take-up drum when starting and stopping the equipment (the take-up differential drive motor is not running), ensuring the stable twisting of the stranded wire when starting and stopping the equipment. During twisting, since the take-up drum clamping device, the take-up differential, and the take-up differential drive motor are all fixed on the wire arrangement bottom plate, the take-up drum moves left and right along the wire arrangement track under the drive of the wire arrangement drive motor. The wire arrangement pitch is set on the PLC according to the size of the twisted wire diameter, and the wire arrangement pitch is adjusted by adjusting the speed of the wire arrangement drive motor, so that the twisted wire strands can be smoothly taken up and arranged on the take-up drum.

[0030] When the equipment is started, the pre-twisting frame rotates to drive the superconducting single wire to twist. The superconducting single wire is pre-twisted first and then the twisting generated during twisting is exactly offset, achieving twisting without back-twisting.

[0031] The pay-off device 1 is composed of a pay-off drum 22, a pay-off pre-twisting frame 23, a pay-off pre-twisting frame drive motor 26, a pay-off differential 24, and a pay-off differential drive motor 25. The number of pay-off devices is configured according to the number of twisted single wires.

[0032] The tension detection device 2 is composed of two front and rear tension detection fixed guide wheels 4 and a tension sensing guide wheel 3.

[0033] The stranding branching and die base integrated device 6 is integrated with a branching plate 7 and a die base 8 by a slide bar. When producing stranding, the positions of the branching plate 7 and the die base 8 can be adjusted forward and backward as needed. The branching plate 7 is equally divided into a plurality of threading holes on the circumference.

[0034] The wire taking-up device 12 is composed of a wire taking-up drum 14, a twisting frame 13, a twisting frame driving motor 21, a wire taking-up differential 20, a wire taking-up differential driving motor 15, a wire taking-up and arranging base 19, a wire arranging guide rail 18, and a wire arranging travel driving motor 16. The wire taking-up drum 14, the wire taking-up differential 20, and the wire taking-up differential driving motor 15 are integrated on the wire taking-up and arranging base 19.

[0035] Before the equipment is put into operation, a suitable twisting die is selected and fixed in the die base 8. Parameters such as the pay-off tension, twisting pitch, twisting wire diameter, take-up reel diameter, and take-up reel opening width are set on the PLC. A certain length of lead wire is selected (the number of lead wires is the same as the number of twisted superconducting wires 5). The diameter of the lead wire is similar to or slightly smaller than the diameter of the twisted superconducting wire 5. One end of all the lead wires is passed through the die, through the metering device 10 and the twisting frame 13, and wound onto the take-up reel 14. The other end of each lead wire is evenly divided and passed through the dividing reel 7, and respectively passed through the front and rear tension detection fixed guide wheels 4 and the tension sensing guide wheel 3 on the tension detection device 2, and passed through the pay-off pre-twisting frame 23, and finally tied to the superconducting wire 5 on the pay-off reel 22.

[0036] Start the equipment, the pay-off pre-twisting frame 23 is driven to rotate by the twisting frame driving motor 21, and the pay-off drum 22 is driven to rotate synchronously through the pay-off differential 24 and the transmission shaft. At this time, there is no speed difference between the pay-off pre-twisting frame 23 and the pay-off drum 22, and the superconducting single wire 5 will not be released from the pay-off drum 22. When the tension detected by the tension sensing guide wheel 3 is greater than the set tension, the PLC starts the pay-off differential driving motor 25, so that the pay-off pre-twisting frame 23 and the pay-off drum 22 form a speed difference, so that the pay-off drum 22 actively releases the superconducting single wire 5. When the tension detected by the tension sensing guide wheel 3 is less than the set tension, the PLC controls the pay-off differential driving motor 25 to decelerate, reduce the pay-off speed, and increase the pay-off tension, thereby realizing automatic detection, automatic feedback, and automatic control of the pay-off tension.

[0037] When the equipment is started, the twist frame 13 rotates under the drive of the twist frame drive motor 21. At the same time, the twist frame drive motor 21 drives the take-up drum 14 to rotate synchronously through the take-up differential 20 and the transmission system. At the same time, the PLC controls the take-up differential drive motor 15 to start according to the set line speed, driving the take-up drum 14 to rotate. The speed of the twist frame 13 is determined and controlled by the PLC according to the twisting pitch and the set line speed.

[0038] During production, the pre-twisting frame 23 of the pay-off is started together with the twisting frame 13 and rotates in the same direction and speed, so that the pre-twisting of the superconducting single wire 5 is exactly offset by the twisting during the twisting, thus achieving twisting without back-twisting.

[0039] During the stranding of superconducting wires, the take-up drum 14, the take-up differential 20, and the take-up differential drive motor 15 are integrated on the take-up and arrangement base 19. The arrangement travel drive motor 16 drives the take-up and arrangement base 19 to move back and forth through the lead screw. Since the take-up drum 14, the take-up differential 20, and the take-up differential drive motor 15 are integrated on the take-up and arrangement base 19, the take-up drum 14 is also driven to move back and forth, thereby realizing the arrangement of the stranded superconducting strands 9 on the take-up drum 14. The arrangement pitch is set on the PLC according to the size of the stranded wire diameter, and the arrangement width can be set on the PLC according to the width of the take-up drum 14. The speed and direction of the arrangement travel drive motor 16 are controlled by the PLC, thereby realizing the reciprocating arrangement of the wires on the take-up drum 14.

[0040] During stranding production, the stranded superconducting strands 9 drive the meter wheel of the metering device to measure the length, and the production length is set on the PLC. When the number of meters produced reaches the set length, the PLC controls the entire equipment to automatically stop running, realizing fixed-length production.

[0041] The high-speed production of all levels of nuclear fusion superconducting cables has been achieved, which fully meets the requirements of nuclear fusion cable twisting. The equipment has the functions of active pay-off, complete back-twisting and automatic tension control, which ensures that the produced superconducting cables are free of twisting, effectively preventing the problem of superconducting cables being damaged due to inaccurate tension control, and ensuring the performance of superconducting cables. At present, the equipment has been maturely used in the twisting production of superconducting cables at all levels of the company, and has provided nearly 30KM of cables for domestic fusion devices, with stable product performance.

[0042] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the embodiments above is only applicable to help understand the principles of the embodiments of the present invention.

Claims

1. A superconducting cable stranding device for nuclear fusion, comprising a pay-off device (1), a tension detection device (2), a distribution plate (7), a die base integration device (6), a metering device (10), an electrical control cabinet (11) and a take-up device (12), characterized in that: The back of the wire-releasing device (1) is provided with a die base integrated device (6), a wire distribution disk (7), a metering device (10), an electrical control cabinet (11) and a wire-receiving device (12) in sequence. The wire-releasing device (1) is integrated with a wire-releasing disk (22), a wire-releasing pre-twisting frame (23), a wire-releasing pre-twisting frame driving motor (26), a wire-releasing differential (24) and a wire-releasing differential driving motor (25). The tension detection device (2) is composed of two front and rear tension detection fixed guide wheels (4) and a tension sensing guide wheel (3).

2. A superconducting cable stranding device for nuclear fusion according to claim 1, characterized in that: The wire taking-up device (12) is composed of a wire taking-up drum (14), a twisting frame (13), a twisting frame driving motor (21), a wire taking-up differential (20), a wire taking-up differential driving motor (15), a wire taking-up and arranging base (19), a wire arranging guide rail (18) and a wire arranging travel driving motor (16); the twisting frame driving motor (21) is connected to the twisting frame (13) via a rotating shaft; the wire taking-up drum (14), the wire taking-up differential (20) and the wire taking-up differential driving motor (15) are integrated on the wire taking-up and arranging base (19).

3. A superconducting cable stranding device for nuclear fusion according to claim 2, characterized in that: The line distribution plate (7) is provided with a plurality of threading holes.

4. A superconducting cable stranding device for nuclear fusion according to claim 3, characterized in that: The mold base integrated device (6) comprises a mold base (8), a slide bar is arranged on the mold base (8), and a line distribution plate (7) is arranged on the slide bar.

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