Device and method for mounting wing center pin column of magnet wing

Abstract

The invention belongs to the technical field of nuclear fusion device installation, and particularly provides a device and method for installing a wing center pin column of a magnet wing, and the device comprises a bottom plate limiting plate, a shaft needle base plate, a center screw rod, a jack check block, a top plate, a jack supporting plate, a jack, an installation groove and a bottom plate. In order to solve the problems that in the prior art, a component to be installed is installed and fixed, concentricity is guaranteed through a center screw, the concentricity of the component to be installed and a wing hole is guaranteed, construction is suitable for being carried out in a narrow space, and the construction efficiency is improved. The mounting efficiency is ensured while the mounting precision is improved; the to-be-installed component is complex in installation position, high in installation precision, high in concentricity requirement and capable of being supported and jacked in the process.

Description

Technical Field

[0001] This invention belongs to the field of nuclear fusion device installation technology, specifically relating to a device and method for installing the central pin of a magnet wing. Background Technology

[0002] The TF magnet is a key component in the installation of a nuclear fusion device. Composed of 16 D-shaped coils evenly distributed along the circumference, it generates a powerful circumferential magnetic field, providing a stable confinement environment for high-temperature plasma. It is the "heart" of the tokamak device, playing a crucial safety barrier role for the main system. Its installation accuracy (including spatial position, angle, and coil spacing) directly affects the distribution characteristics of the generated circumferential magnetic field, thus significantly negatively impacting the plasma confinement, operational stability, and experimental safety of the tokamak device. The wing center pin is one of the important structural components for connecting and positioning the TF magnet; its installation accuracy directly affects the magnet's functionality, making its importance self-evident.

[0003] Because the wing center pin is made of 316LN steel, its overall dimensions are relatively large (Φ330*735mm), with a total weight of approximately 227kg. This includes the wing pin, pin bushing, pin base plate, pin center screw, and matching bolts, washers, and nuts. The wing pin weighs 174.3kg, the pin bushing 14.1kg, and the pin base plate 22.7kg. The center pin mounting surface forms a certain angle with the vertical plane, and the stainless steel material cannot directly contact the ferrite material, making direct hoisting and installation difficult. The pin bushing and the TF magnet wing hole have an interference fit. The outer surface of the pin bushing is coated with an insulating layer; during cold assembly, concentricity must be ensured and the coating protected from damage. The wing pin and pin bushing have a transition fit, requiring high precision in concentricity between the two fits. The installation accuracy of the circumferential field magnet is typically controlled within ±1mm. Millimeter-level positional deviations or milliradian-level angular errors can be amplified through magnetic field distortion, ultimately affecting plasma confinement performance and the safety of experimental operation. Therefore, higher requirements are placed on the functionality of the installation fixture. Firstly, the fixture must be used to install the pin bushing and wing pin, ensuring concentricity; secondly, it must be able to support and lift the pin bushing and wing pin, ensuring quick and convenient installation. This necessitates that the installation fixture possess both precise and rapid positioning capabilities and the ability to support and lift.

[0004] Conventional installation involves hoisting with manual assistance to adjust angles for assembly. The tooling used is designed specifically for component interfaces and hoisting requirements, lacking the ability to simultaneously provide precise and rapid positioning and support lifting. However, there is a gap in the design and installation of tooling for components in nuclear fusion devices, which require complex installation locations, high precision, and simultaneous precise and rapid positioning and support lifting. This is primarily because conventional installation tooling is limited in function, relies on worker experience for precise adjustment, is complex to operate, and has low installation accuracy. It is difficult to meet the installation requirements of the TF magnet wing support assembly in nuclear fusion devices. Therefore, a new design approach and installation method are urgently needed to solve the installation problem of the TF magnet wing support assembly. Summary of the Invention

[0005] The present invention provides a device and method for installing the central pin of a magnet wing. The objectives are: first, to overcome the problem of complex process in existing hoisting installation; second, to address the problem that existing adjustment and positioning processes are complex, require continuous trial and adjustment, and have difficulty in guaranteeing accuracy; and third, to address the problem that existing installations do not support lifting functions and have long adjustment and positioning times.

[0006] Therefore, the present invention provides a device for installing the center pin of a magnet wing, comprising a base plate limiting plate, a pin pad, a center screw, a jack stop, a top plate, a jack support plate, a jack, a mounting groove, and a base plate. The left end of the center screw is connected to the base plate limiting plate, and the right end of the center screw passes through the base plate and then through the top plate. The mounting groove is connected between the lower part of the base plate and the lower part of the top plate. The pin pad is vertically connected in the mounting groove. The jack is located between the pin pad and the top plate, and the power output end of the jack is connected to the pin pad. The jack is connected to the upper part of the mounting groove through the jack support plate. The outer sleeve of the center screw between the jack and the top plate is either not fitted with a jack stop or fitted with one or more jack stops.

[0007] Preferably, it also includes multiple nuts, and the multiple nuts connect to the shaft pin pad.

[0008] Preferably, it also includes a sleeve and a second nut, with the sleeve and the second nut sequentially sleeved on the outer side of the central screw on the right side of the shaft pin washer from left to right.

[0009] Preferably, it also includes two fixing rods, with the upper part of the base plate and the lower part of the top plate connected by the two fixing rods, which are symmetrically distributed back and forth around the central screw.

[0010] Preferably, it also includes two guide positioning rods. The left ends of the two guide positioning rods are connected to the upper right side of the component to be installed, and the right ends of the two guide positioning rods pass through the top plate. The two guide positioning rods are symmetrically distributed back and forth with the central screw as the center.

[0011] Preferably, it also includes nut three, with nut three being sleeved on the fixing rod on the right side of the top plate.

[0012] Preferably, it also includes nut four, with nut four being sleeved on the central screw on the right side of the top plate.

[0013] Preferably, it also includes multiple screws, which are circumferentially and equally spaced to connect to the base plate limiting plate.

[0014] Preferably, it also includes multiple bolts, which are circumferentially and equally spaced to connect the base plate.

[0015] A method for mounting a center pin for a magnet wing includes the following steps: S1. Pass the center screw through the receiving installation component, and install the component to be installed with the center screw through it into the installation groove, so that the component to be installed is connected to the shaft pin pad. S2. Connect the bottom plate limiting plate to the wing lower cover plate; S3. Install the jack support plate and jack in the mounting slot, so that the power output end of the jack is connected to the shaft pin pad. S4. Connect the base plate to the wing cover plate; S5. When it is necessary to lift the part to be installed, push the shaft pin pad to the left with the jack, thereby moving the part to be installed to the left. After the jack is lifted, tighten the shaft pin pad, retract the jack's extension end, place the jack stop between the jack and the top plate, move the jack and the jack support plate to complete the first stage of lifting. S6. Repeat step S6 to continue the next stage of lifting until the component to be installed is lifted to the target position.

[0016] The beneficial effects of this invention are: The device and method for installing the center pin of a magnet wing provided by this invention involves pushing the pin pad to the left with a jack, thereby moving the component to be installed to the left. After the jack is fully lifted, the pin pad is tightened, the jack's extended end is retracted, a jack stop is placed between the jack and the top plate, and the jack and jack support plate are moved to complete the first stage of lifting. The above steps are repeated to complete the next stage of lifting until the component to be installed is lifted to the target position. This achieves the installation and fixation of the component (center pin or coaxial fixture), with concentricity ensured by the center screw, ensuring the concentricity of the component to be installed and the wing hole. It is suitable for construction in confined spaces, improving installation accuracy while ensuring installation efficiency. It is applicable to components with complex installation positions, high installation accuracy, high concentricity requirements, and the ability to support lifting during the process. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 This is the main structural view of the device for installing the central pin of the magnet wing during installation; Figure 2 This is a side view of the overall structure of the device for installing the central pin of the magnet wing during installation; Figure 3 This is a three-dimensional structural diagram of the device for mounting the central pin of the magnet wing; Figure 4 This is a cross-sectional view of the device structure for mounting the central pin of the magnet wing; Figure 5 This is the main view of the structure of the device for mounting the central pin of the magnet wing; Figure 6 yes Figure 5 A-direction graph; Figure 7 yes Figure 5 C-axis graph; Figure 8 This is a diagram of the central screw structure; Figure 9 This is the left view of the base plate limiting plate; Figure 10 yes Figure 9 A-direction graph; Figure 11 This is a 3D structural diagram of the jack stop block; Figure 12 This is the left view of the jack stop block structure; Figure 13 This is the left view of the mechanism of the pin bearing pad.

[0019] Explanation of reference numerals in the attached diagram: 1. Screw; 2. Base plate limiting plate; 3. Shaft pin washer; 4. Sleeve; 5. Nut II; 6. Nut III; 7. Guide positioning rod; 8. Fixing rod; 9. Center screw; 10. Jack stop block; 11. Nut IV; 12. Top plate; 13. Jack support plate; 14. Jack; 15. Bolt II; 16. Mounting groove; 17. Rib plate; 18. Base plate; 19. Bolt I; 20. Connecting block; 21. Shaft pin support block; 22. Center pin; 3.1 Through hole; 10.1 Left baffle; 10.2 Upper connecting plate; 10.3 Front connecting plate; 10.4 Rear connecting plate; 10.5 Right baffle. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] Example 1: like Figures 1-11As shown, a device for installing a central pin of a magnet wing includes a base plate limiting plate 2, a pin pad 3, a central screw 9, a jack stop 10, a top plate 12, a jack support plate 13, a jack 14, a mounting groove 16, and a base plate 18. The left end of the central screw 9 is connected to the base plate limiting plate 2, and the right end of the central screw 9 passes through the base plate 18 and then through the top plate 12. The mounting groove 16 is connected between the lower part of the base plate 18 and the lower part of the top plate 12. The pin pad 3 is vertically connected inside the mounting groove 16. The jack 14 is located between the pin pad 3 and the top plate 12, and the power output end of the jack 14 is connected to the pin pad 3. The jack 14 is connected to the mounting groove 16 via the jack support plate 13. The central screw 9 between the jack 14 and the top plate 12 is either not fitted with a jack stop 10 or fitted with one or more jack stops 10.

[0022] Specifically, in use, the center screw 9 is passed through the receiving and installation component (center pin), and the center pin with the center screw 9 is installed in the installation groove 16, so that the center pin is connected to the shaft pin pad 3; the base plate limiting plate 2 is connected to the wing lower cover plate; the jack support plate 13 and the jack 14 are installed in the installation groove 16, so that the power output end of the jack 14 is connected to the shaft pin pad 3; the shaft pin pad 3 supports the component to be installed, and the base plate 18 is connected to the wing upper cover plate; the shaft pin pad 3 is pushed to the left by the jack 14, thereby moving the component to be installed to the left. After the jack 14 has been lifted, the shaft pin pad 3 is tightened, and the jacking end of the jack 14 is retracted. Place the jack stop 10 between the jack 14 and the top plate 12, move the jack 14 and the jack support plate 13 to complete the first stage of jacking; repeat the above steps to complete the next stage of jacking until the part to be installed is lifted to the target position, thereby installing and fixing the part to be installed (central pin or coaxial tooling), ensuring concentricity through the central screw, and ensuring the concentricity of the part to be installed and the wing hole. It is suitable for construction in confined spaces, improving installation accuracy while ensuring installation efficiency; it can be applied to parts to be installed with complex installation positions, high installation accuracy, high concentricity requirements, and the ability to support jacking during the process.

[0023] Example 2: Based on Embodiment 1, it also includes multiple nuts, and the multiple nuts are connected to the shaft pin pad 3.

[0024] Specifically, multiple nuts are used to secure and limit the component to be installed by the shaft pin pad 3.

[0025] Preferably, it also includes a sleeve 4 and a second nut 5, with the sleeve 4 and the second nut 5 sequentially sleeved on the outer side of the central screw 9 on the right side of the shaft pin pad 3 from left to right.

[0026] Specifically, the sleeve 4 and nut 5 work together to limit and fix the shaft pin pad 3 after it has been lifted into place, preventing the shaft pin pad 3 from shifting and facilitating the retraction of the jack 14 for the next stage of lifting.

[0027] Preferably, it also includes two fixing rods 8, which connect the upper part of the bottom plate 18 and the lower part of the top plate 12. The two fixing rods 8 are symmetrically distributed back and forth with the central screw 9 as the center.

[0028] Specifically, the top plate 12 and the bottom plate 18 are fixed by tie rod 8 to ensure the stability of the overall structure during lifting.

[0029] Preferably, it also includes two guide positioning rods 7. The left ends of the two guide positioning rods 7 are connected to the upper right side of the component to be installed, and the right ends of the two guide positioning rods 7 pass through the top plate 12. The two guide positioning rods 7 are symmetrically distributed front and back with the central screw 9 as the center.

[0030] Specifically, the guide positioning rod 7 facilitates the guidance and positioning of the component to be installed, ensuring that the TF magnet wing pin is installed in a circumferential position, and making it convenient for the component to be installed to be concentric with the mounting groove 16.

[0031] Preferably, it also includes nut three 6, and nut three 6 is sleeved on the fixing rod 8 on the right side of the top plate 12.

[0032] Specifically, the top plate 12 and the bottom plate 18 are secured by locking the fixing rod 8 with nut 3 6.

[0033] Preferably, it also includes nut four 11, with nut four 11 being sleeved on the central screw 9 on the right side of the top plate 12.

[0034] Specifically, nut 4 11 facilitates locking the top plate 12. Nut 4 11 and nut 3 6 together ensure stability during lifting and facilitate disassembly.

[0035] Preferably, it also includes multiple screws 1, which are circumferentially and equally spaced to connect the base plate limiting plate 2.

[0036] Specifically, screw 1 facilitates the connection of the base plate limiting plate 2 to the wing lower cover plate, making installation and removal convenient.

[0037] Preferably, it also includes multiple bolts 19, which are circumferentially and equally spaced to connect the base plate 18.

[0038] Specifically, bolt 19 facilitates the stable connection of the base plate 18 to the wing cover plate, making installation and disassembly convenient.

[0039] Preferably, it also includes two sets of stiffening plates 17, with the bottom plate 18 and the outer side of the mounting groove 16 connected by two sets of stiffening plates 17, and the two sets of stiffening plates 17 are symmetrically distributed front and back.

[0040] Specifically, the stability of the overall structure is improved by using two sets of stiffening plates 17.

[0041] Preferably, it also includes bolt 2 15, and the mounting groove 16 and the part to be installed are connected below by bolt 2 15.

[0042] Specifically, bolt 15 is used to support the part to be installed, ensuring the concentricity of the part to be installed with the mounting groove 16.

[0043] Preferably, a connecting block 20 is connected to the top of the bolt 2 15.

[0044] Specifically, by connecting the lower part of the component to be installed through the connection block 20, the contact area between the bolt 2 15 and the component to be installed is increased, thus avoiding damage to the component to be installed.

[0045] Preferred, such as Figure 13 As shown, the bottom of the pin pad 3 is arc-shaped, and a through hole 3.1 is provided in the middle of the pin pad 3.

[0046] Specifically, the lower part has an arc-shaped pin pad 3 to facilitate full contact with the bottom surface of the mounting groove 16, and the through hole 3.1 facilitates the connection of the center screw 9.

[0047] Preferred, such as Figure 11 and Figure 12 As shown, the jack stop 10 includes a left baffle 10.1, an upper connecting plate 10.2, a front connecting plate 10.3, a rear connecting plate 10.4, and a right baffle 10.5. The left baffle 10.1 and the right baffle 10.5 are vertically spaced from left to right. The upper connecting plate 10.2 connects the top of the left baffle 10.1 and the top of the right baffle 10.5. The front connecting plate 10.3 connects the front of the left baffle 10.1 and the front of the right baffle 10.5. The rear connecting plate 10.4 connects the rear of the left baffle 10.1 and the rear of the right baffle 10.5. A U-shaped hole is vertically opened between the middle of the left baffle 10.1 and the middle of the right baffle 10.5.

[0048] Specifically, the jack stop 10 of this structure has a simple structure and the U-shaped hole facilitates installation and disassembly.

[0049] Preferably, the mounting groove 16 is a semi-circular groove.

[0050] Specifically, the semi-circular mounting slot 16 facilitates concentricity with the wing hole.

[0051] Preferably, the base plate 18 has multiple bolt holes, and bolts 19 are connected in the bolt holes. The positioning dimension of the bolt holes is required to be ±0.1mm, and the surface roughness Ra of the mounting groove 16 is 1.6 to ensure coaxial accuracy.

[0052] Preferably, a plurality of pin support blocks 21 are connected to the left side of the bottom plate limiting plate 2.

[0053] Specifically, multiple pin support blocks 21 are circumferentially evenly distributed. The pin support blocks 21 are used for small-range radial adjustment and provide support during installation.

[0054] Preferably, the screw is an internal hexagonal head screw, nuts 3.6 and 4.11 are both hexagonal nuts, and bolts 2.15 and 1.19 are both hexagonal head bolts.

[0055] Example 3: Based on Example 2, a method for mounting a central pin on a magnet wing includes the following steps: S1. Pass the center screw 9 through the receiving installation component, and install the component to be installed with the center screw 9 through it in the installation groove 16, so that the component to be installed is connected to the shaft pin pad 3. Specifically, when the component to be installed is a center pin, the center screw 9 is passed through the center pin, the center pin with the center screw 9 is installed in the mounting groove 16, and after leaving the position for the jack 14, multiple nuts are used to connect the shaft pin washer 3 so that the center pin is connected to the shaft pin washer 3. When the part to be installed is a coaxial fixture, first put the coaxial fixture into the pin bushing, pass the center screw 9 through the coaxial fixture with the pin bushing, install the coaxial fixture with the center screw 9 through the mounting groove 16, use multiple nuts to connect the shaft pin pad 3, leave the position of the jack 14, and then connect the center pin to the shaft pin pad 3. S2. Connect the bottom plate limiting plate 2 to the wing lower cover plate; Specifically, the base plate limiting plate 2 is fixed to the interface bolt hole on the lower cover plate of the TF coil wing using screws 1; S3. Install the jack support plate 13 and the jack 14 in the mounting slot 16, so that the power output end of the jack 14 is connected to the shaft pin pad 3. Specifically, the central screw 9 is inserted into the bottom plate limiting plate 2 for fixation, and the jack support plate 13 and jack 14 are installed in the mounting groove 16; S4. Connect the base plate 18 to the wing cover plate; Specifically, the base plate 18 is fixed to the pre-drilled interface bolt holes on the upper cover plate of the TF coil wing using bolts 19; S5. When it is necessary to lift the part to be installed, push the shaft pin pad 3 to the left through the jack 14, thereby moving the part to be installed to the left. After the jack 14 has finished lifting, tighten the shaft pin pad 3, retract the jack 14, place the jack stop 10 between the jack 14 and the top plate 12, move the jack 14 and the jack support plate 13 to complete the first stage of lifting. Specifically, lift jack 14. After jack 14 is lifted, tighten the shaft pin pad 3 by locking nut 2 5. Retract the jack 14. Place jack stop 10 between jack 14 and top plate 12. Move jack 14 and jack support plate 13 to complete the first stage of lifting. Synchronously adjust the back nut positioning nut 1 of the shaft pin pad 3, insert the jack stop 10 into the back of the jack 14, adjust the position of the jack 14, and continue to lift until the coaxial tooling together with the pin bushing is lifted into place. Remove the stepped shaft pin installation tooling and the coaxial tooling.

[0056] S6. Repeat step S6 to complete the next stage of lifting until the component to be installed is lifted to the target position. After lifting is complete, remove the component to be installed.

[0057] This invention enables the installation and fixation of the component to be installed (central pin or coaxial tooling), and ensures concentricity by using the central screw 9, thus ensuring the concentricity between the component to be installed and the wing hole. It is suitable for construction in confined spaces, improving installation accuracy while ensuring installation efficiency. It is applicable to components to be installed in complex locations, with high installation accuracy, high concentricity requirements, and the ability to support jacking during the process.

[0058] In the description of this invention, it should be understood that if terms such as "left," "inner," or "right" indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention.

[0059] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. An apparatus for magnet wing fin center pin post installation, characterized by: The utility model relates to a kind of centering device, including bottom plate limiting plate (2), shaft needle base plate (3), center screw (9), jack stopper (10), top plate (12), jack support plate (13), jack (14), installation slot (16) and bottom plate (18), the left end of center screw (9) is connected bottom plate limiting plate (2), the right end of center screw (9) is connected top plate (12) after passing through bottom plate (18), installation slot (16) is connected between bottom plate (18) lower part and top plate (12) lower part, shaft needle base plate (3) is vertically connected in installation slot (16), jack (14) is located between shaft needle base plate (3) and top plate (12), and the power output end of jack (14) is connected shaft needle base plate (3), jack (14) is connected installation slot (16) upper surface by jack support plate (13) below, and the outer sleeve of center screw (9) between jack (14) and top plate (12) is not connected jack stopper (10) or is connected more than one jack stopper (10).

2. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising a plurality of nuts one, a plurality of nuts one connect shaft needle base plate (3).

3. The device for magnet wing fin center pin post installation of claim 2, wherein: Further comprising sleeve (4) and nut two (5), the outside of the right side of shaft needle base plate (3) center screw (9) is sequentially connected sleeve (4) and nut two (5) from left to right.

4. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising two fixed rods (8), two fixed rods (8) are symmetrically distributed forward and backward with center screw (9) as center between bottom plate (18) upper part and top plate (12) lower part.

5. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising two guide positioning rods (7), the left end of two guide positioning rods (7) is connected to the upper right side of the component to be installed, the right end of two guide positioning rods (7) passes through top plate (12), and two guide positioning rods (7) are symmetrically distributed forward and backward with center screw (9) as center.

6. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising nut three (6), the fixed rod (8) outside right side of top plate (12) is connected nut three (6).

7. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising nut four (11), the center screw (9) outside right side of top plate (12) is connected nut four (11).

8. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising a plurality of screws (1), a plurality of screws (1) are connected to bottom plate limiting plate (2) at equal intervals in the circumferential direction.

9. The device for magnet wing fin center pin post installation of claim 1, wherein: Further comprising a plurality of bolts one (19), a plurality of bolts one (19) are connected to bottom plate (18) at equal intervals in the circumferential direction.

10. A method for magnet wing fin center pin post installation, characterized by: The method comprises the following steps: S1, the center screw (9) is connected to the component to be installed, the component to be installed with the center screw (9) is installed in the installation slot (16), so that the component to be installed is connected to the shaft needle base plate (3); S2, the bottom plate limiting plate (2) is connected to the wing fin lower cover plate; S3, jack support plate (13) and jack (14) are installed in the installation slot (16), so that the power output end of jack (14) is connected to the shaft needle base plate (3); S4, the bottom plate (18) is connected to the wing fin upper cover plate; S5, when the jacking is needed to the component to be installed, the jack (14) pushes the shaft needle base plate (3) to the left, and then makes the component to be installed move to the left, the jack (14) jacks up, fastens the shaft needle base plate (3), the jack (14) jacks out the end, and then the jack block (10) is placed between the jack (14) and the top plate (12), the jack (14) and the jack support plate (13) are moved, and the first stage jacking is completed; S6, the step S6 is repeated to continue the next stage jacking until the component to be installed is jacked to the target position.

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