Tension-free wrapping system and method for armored spiral tube superconducting coil for nuclear fusion

Abstract

The invention discloses a tension-free wrapping system and method for an armored spiral tube superconducting coil for nuclear fusion, which is suitable for the field of research, development and manufacturing of nuclear fusion reactors, and comprises a wrapping platform upper cover plate, a first laser level meter, a cylinder positioning rod, a slewing bearing platform, a second laser level meter, a cushion block and a wrapping platform, the slewing bearing platform rotates according to the radial stress condition of a superconducting coil turn-releasing coil and the stress condition of a spiral line in the circumferential direction, and the second laser level meter rotates according to a base of the wrapping platform and then conducts lead-out datum line positioning calibration. And a cylinder positioning rod arranged on the wrapping platform is used for positioning and fixing the slewing bearing platform of the wrapping platform. According to the invention, the tension-free insulation wrapping of the armored spiral tube superconducting coil for nuclear fusion can be ensured, and the tension damage of the metallographic structure of the superconducting coil in the wrapping process is avoided.

Description

Technical Field

[0001] The invention relates to the field of superconducting magnets for nuclear fusion, and in particular to a tension-free winding system and method of an armored spiral tube superconducting coil for nuclear fusion. Background Art

[0002] For environmental protection, human development and survival safety, nuclear fusion energy is the most ideal clean energy in human social activities. In the fusion reaction process, the magnetic field plays a vital role in the confinement of the plasma body, and the superconducting coil is the core key component of the magnetic field formation. During the insulation winding process of the superconducting coil, the insulation winding slewing bearing rotating support bearing table needs to be rotated appropriately so that the coil is not subjected to mechanical tension in the radial direction, preventing the coil from being smooth and tension-free during the winding process, thereby ensuring the integrity of the coil contour.

[0003] With the extension and development of large-scale nuclear fusion scientific facilities, the key component superconducting coils also have large differences in external contours and radial dimensions due to the differences in magnetic field strength. After the winding and molding process, the superconducting coils need to be insulated and wrapped. During the automatic winding of the coil insulation, there are high requirements for the overlap rate of the coil insulation material; at the same time, the technical indicators of the overlap rate make the insulation material constrain the coil in tension during the coil insulation winding process. With the continuous automatic insulation winding, the coil will be unable to smoothly lay down the turns freely under the long-term tension constraint, which will cause the coil to be twisted and deformed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a tension-free winding system and method for an armored spiral tube superconducting coil for nuclear fusion. According to the baseline position of the superconducting coil on the insulation winding rotating platform, the rotation speed of the roller during the coil unwinding process is checked; the contour of the laser tracker is combined with the design model size fitting to further judge the tension constraint degree of the coil, thereby achieving tension-free overlapping during the insulation winding process of the armored spiral tube superconducting coil for nuclear fusion, improving the insulation winding efficiency of the coil and effectively protecting the cross-sectional size, shape and contour of the coil.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows: A tension-free wrapping system for an armored spiral tube superconducting coil for nuclear fusion comprises a cover plate on a wrapping platform, a first laser level, a cylinder positioning rod, a slewing bearing platform, a second laser level, a cushion block, and a wrapping platform; the slewing bearing platform rotates according to the radial direction of the superconducting coil turn coil and the stress in the circumferential direction of the spiral line, the second laser level performs a datum line positioning calibration according to the rotation of the base of the wrapping platform, and the cylinder positioning rod installed on the wrapping platform positions and fixes the slewing bearing platform of the wrapping platform; the cover plate on the wrapping platform is connected with the first laser level to lead out the initial position of the coil, the cylinder positioning rod connects the first laser level with the second laser level to achieve the coincidence of the datum line of the initial position of the coil with the datum line of the wrapping platform, and then the cover plate on the wrapping platform and the wrapping platform are fixed, the second laser level is arranged on the slewing bearing platform to achieve the datum line of the wrapping platform being led out at the same time when the coil eliminates the tension, and the cushion block is arranged between the slewing bearing platform and the wrapping platform to achieve the load rotation of the slewing bearing wrapping platform.

[0006] The present invention also provides a tension-free winding method of an armored spiral tube superconducting coil for nuclear fusion, comprising the following steps: Step 1: Remove the coil fixing fixture and hang the coil to the insulated winding platform; Step 2: Use the insulating cover plate on the winding platform to place the coil turns and adjust the coil support fixing bracket; Step 3: Check whether the coil after winding is subject to the tensile constraint of the radial roller of the insulating wrapping platform support frame. If so, proceed to Step 4; if not, return to Step 2; Step 4: Check whether the first turn of the coil is in a free and relaxed state when it is dropped onto the insulating winding platform. If so, proceed to Step 5; if not, return to Step 3; Step 5: Rotate the slewing bearing platform until the coil is free from radial force constraints; Step 6: Lead the coding characteristic lines on all coils to the insulated winding platform; Step 7: The first laser leveler draws out the reference line L1; Step 8: The second laser leveler draws out the reference line L2; Step 9: The coil is automatically insulated and wound on the winding platform; Step 10: Coil alignment and die dropping; the cylinder positioning rod fixes the position of the upper cover plate of the insulating wrapping platform and the lower cover plate of the wrapping platform; Step 11: Use a three-coordinate measuring machine to check whether the outer contour and cross-sectional dimensions of the coil meet the design tolerance requirements of the drawing. If so, proceed to Step 12; if not, return to Step 10; Step 12: Close the cylinder positioning rod of the insulating wrapping platform to lock and position the die drop coil.

[0007] Furthermore, in Step 2, the coil support fixing bracket is installed on the insulating winding platform.

[0008] Furthermore, in Step 3, the radial roller of the support frame is installed on an insulating wrapping platform.

[0009] Furthermore, in Step 5, the slewing support platform is installed on the wrapping platform.

[0010] Furthermore, in Step 7-Step 12, the first laser level and the second laser level are both installed on an insulating wrapping platform.

[0011] Furthermore, in Step 10, the cylinder positioning rod is installed on an insulating wrapping platform.

[0012] Furthermore, the degree of tension constraint on the coil during the coil insulation winding process is tested by fitting the inner and outer contour deviations of a three-coordinate measuring machine.

[0013] Beneficial effects: The present invention uses a laser level to check the offset between the coil base line of the cover plate on the wrapping platform and the coil on the die drop platform, makes a micro-adjustment through the slewing bearing of the wrapping platform, and then determines the adjustment amount and closes the positioning rod of the cylinder to fix the position of the wrapping platform; that is, the tension constraint in the process of coil unwinding is eliminated to achieve higher quality insulation wrapping of the coil. The present invention can improve the insulation wrapping efficiency of the armored spiral tube superconducting coil for nuclear fusion, reduce the insulation wrapping cost, and ensure the movement accuracy of the insulation wrapping slewing platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings that are part of the specification of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 The invention is a schematic diagram of a tension-free winding system of an armored spiral tube superconducting coil for nuclear fusion.

[0015] Figure 2 The present invention provides a flow chart of a tension-free winding method for an armored spiral tube superconducting coil for nuclear fusion.

[0016] Among them, the accompanying drawings are marked as: a cover plate 1 on the wrapping platform, a first laser level 2, a cylinder positioning rod 3, a slewing support platform 4, a second laser level 5, a cushion block 6, and a wrapping platform 7. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0018] like Figure 1 As shown, the tension-free wrapping system of the armored spiral tube superconducting coil for nuclear fusion of the present invention comprises an upper cover plate 1 of the wrapping platform, a first laser level 2, a cylinder positioning rod 3, a slewing bearing platform 4, a second laser level 5, a cushion block 6, a wrapping platform 7, and a lower cover plate of the wrapping platform. The slewing bearing platform 4 can rotate according to the radial direction of the superconducting coil turn coil and the force in the circumferential direction of the spiral line. The second laser level 5 performs the positioning and calibration of the lead-out reference line after the base of the wrapping platform 7 rotates. The cylinder positioning rod 3 installed on the wrapping platform 7 positions and fixes the slewing bearing platform 4 of the wrapping platform 7. The upper cover plate 1 on the wrapping platform is connected to the first laser level 2 to lead out the initial position of the coil, the cylinder positioning rod 3 connects the first laser level 2 and the second laser level 5 to achieve the coincidence of the coil initial position reference line with the wrapping platform reference line, and then the cover plate 1 and the wrapping platform 7 on the wrapping platform are fixed, and the second laser level 5 is arranged on the slewing bearing platform 4 to achieve the simultaneous lead-out of the reference line of the wrapping platform while eliminating the tension of the coil, and the pad 6 is arranged between the slewing bearing platform 4 and the wrapping platform 7 to realize the load rotation connection of the slewing bearing wrapping platform.

[0019] like Figure 2 As shown, a tension-free winding method of an armored spiral tube superconducting coil for nuclear fusion of the present invention comprises the following steps: Step 1: Remove the coil fixing fixture and hang the coil to the insulating winding platform 7; Step 2: Use the insulating wrapping platform cover 1 to place the coil turns and adjust the coil support fixing bracket; Step 3: Check whether the coil after winding is subject to the tensile constraint of the radial roller of the insulating wrapping platform support frame. If so, proceed to Step 4; if not, return to Step 2; Step 4: Check whether the first turn of the coil is in a free and relaxed state when it is dropped onto the insulating winding platform 7. If so, proceed to Step 5; if not, return to Step 3; Step 5: The slewing bearing rotates the slewing bearing platform 4 until the coil is free from radial force constraint; Step 6: Lead out the coding characteristic lines on all coils to the insulating wrapping platform 7; Step 7: The first laser level 2 draws out the reference line L1; Step 8: The second laser level 5 draws out the reference line L2; Step 9: The coil is automatically insulated and wound on the winding platform 7; Step 10: Coil alignment and mold placement; the cylinder positioning rod 3 fixes the positions of the upper cover plate 1 of the insulating wrapping platform and the lower cover plate of the wrapping platform.

[0020] Step 11: Use a three-coordinate measuring machine to check whether the outer contour and cross-sectional dimensions of the coil meet the design tolerance requirements of the drawing. If so, proceed to Step 12; if not, return to Step 10; Step 12: Close the cylinder positioning rod 3 of the insulating wrapping platform 7 to lock and position the die-dropping coil.

[0021] All reference lines are used to ensure the coils are aligned correctly.

[0022] Preferably, in Step 7, a first laser level 2 is used to draw a reference line L1 on the insulating winding platform 7 to ensure the correct alignment of the coil mold.

[0023] Preferably, in Step 12, a three-coordinate measuring instrument is used to check whether the outer contour and cross-sectional dimensions of the coil meet the design tolerance requirements of the drawing, which can effectively detect the tension-free degree of the coil insulation wrapping.

[0024] As a preferred embodiment, the tension-free contour deviation detection of the insulation winding of the fusion reactor spiral tube superconducting coil is selected, as shown in Table 1 and Table 2, and the outer contour deviation data of the coil insulation winding after the line is dropped into the mold is shown in Table 2.

[0025] The surface point measurement data of the coil insulation wrapping line after die dropping is matched with the 3D model drawn by 3D software, and the best fit analysis is performed to obtain the outer contour deviation results as shown in Table 1: Table 1 Coil insulation wrapping line after die dropping outer contour deviation measurement table

[0026] The surface point measurement data of the coil insulation wrapping line after die dropping was matched with the 3D model drawn by 3D software, and the best fit analysis was performed to obtain the inner contour deviation results as shown in Table 2: Table 2 Coil insulation wrapping line after die dropping inner contour deviation measurement table

[0027] The above is only a preferred embodiment of the present invention, which is not restrictive. The drawings are only one of the embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A tension-free winding system of an armored spiral tube superconducting coil for nuclear fusion, characterized in that: It includes a cover plate on a wrapping platform, a first laser level, a cylinder positioning rod, a slewing bearing platform, a second laser level, a cushion block, and a wrapping platform; the slewing bearing platform rotates according to the radial direction of the superconducting coil turn coil and the force applied in the circumferential direction of the spiral line; the second laser level performs a lead-out reference line positioning calibration after rotating according to the base of the wrapping platform; the cylinder positioning rod installed on the wrapping platform positions and fixes the slewing bearing platform of the wrapping platform; the cover plate on the wrapping platform is connected to the first laser level to lead out the initial position of the coil; the cylinder positioning rod connects the first laser level with the second laser level to achieve the coincidence of the reference line of the initial position of the coil with the reference line of the wrapping platform; then the cover plate on the wrapping platform and the wrapping platform are fixed; a second laser level is arranged on the slewing bearing platform to achieve the simultaneous lead-out of the reference line of the wrapping platform when the coil eliminates tension; the cushion block is arranged between the slewing bearing platform and the wrapping platform to achieve the load rotation of the slewing bearing wrapping platform.

2. A tension-free winding method for an armored spiral tube superconducting coil for nuclear fusion, characterized in that: The steps include: Step 1: Remove the coil fixing fixture and hang the coil to the insulated winding platform; Step 2: Use the insulating cover plate on the winding platform to place the coil turns and adjust the coil support fixing bracket; Step 3: Check whether the coil after winding is subject to the tensile constraint of the radial roller of the insulating wrapping platform support frame. If so, proceed to Step 4; if not, return to Step 2; Step 4: Check whether the first turn of the coil is in a free and relaxed state when it is dropped onto the insulating winding platform. If so, proceed to Step 5; if not, return to Step 3; Step 5: Rotate the slewing bearing platform until the coil is free from radial force constraints; Step 6: Lead the coding characteristic lines on all coils to the insulated winding platform; Step 7: The first laser leveler draws out the reference line L1; Step 8: The second laser leveler draws out the reference line L2; Step 9: The coil is automatically insulated and wound on the winding platform; Step 10: Coil alignment and die dropping; the cylinder positioning rod fixes the position of the upper cover plate of the insulating wrapping platform and the lower cover plate of the wrapping platform; Step 11: Use a three-coordinate measuring machine to check whether the outer contour and cross-sectional dimensions of the coil meet the design tolerance requirements of the drawing. If so, proceed to Step 12; if not, return to Step 10; Step 12: Close the cylinder positioning rod of the insulating wrapping platform to lock and position the die drop coil.

3. A tension-free winding method for an armored spiral tube superconducting coil for nuclear fusion according to claim 2, characterized in that: In the Step 2, the coil support fixing bracket is installed on the insulating winding platform.

4. A tension-free winding method for an armored spiral tube superconducting coil for nuclear fusion according to claim 2, characterized in that: In Step 3, the radial roller of the support frame is installed on an insulating wrapping platform.

5. The tension-free winding method of a superconducting coil for nuclear fusion according to claim 2, characterized in that: In the Step 5, the slewing bearing platform is installed on the surrounding platform.

6. A tension-free winding method for a superconducting coil of an armored spiral tube for nuclear fusion according to claim 2, characterized in that: In Step 7-Step 12, the first laser level and the second laser level are both installed on the insulating wrapping platform.

7. The tension-free winding method of a superconducting coil for nuclear fusion according to claim 2, characterized in that: In Step 10, the cylinder positioning rod is installed on an insulating wrapping platform.

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