Flexible alignment mechanism and method for installation of electrical feedthroughs in a fusion device confinement chamber

Abstract

The application provides a flexible hole aligning mechanism for installation of an electric feedthrough in a closed cavity of a fusion device, and belongs to the technical field of installation of an electric feedthrough in a closed cavity of a fusion device. The flexible hole aligning mechanism comprises a spring sleeve, a flexible support rod, a connecting disc and an electric feedthrough in sequence, wherein the flexible support rod is a circular tubular structure, a plurality of strip-shaped slits are arranged in the annular array of the tube wall between the two ends of the flexible support rod, the length direction of the strip-shaped slits is parallel to the axis of the flexible support rod, so as to form a flexible structure in the form of a strip at the two ends of the flexible support rod; one end of the flexible support rod is inserted into the elastic sleeve and coaxially fixed with the elastic sleeve, the other end of the flexible support rod is coaxially fixed with the connecting disc, and the connecting disc is coaxially fixed with the end of the electric feedthrough away from the inner pin of the electric feedthrough. The flexible hole aligning mechanism can realize the clamping and supporting function of the electric feedthrough at the far end of the shielding block assembly, and also has the flexible adjusting property.

Description

Technical Field

[0001] This invention belongs to the field of electrical feedthrough installation technology in the closed cavity of a fusion device, and more specifically, it is a flexible hole-fitting mechanism and method for electrical feedthrough installation in the closed cavity of a fusion device. Background Technology

[0002] A tokamak fusion device consists of thousands of components, among which the vacuum chamber components and diagnostic system are key parts. Because the physical environment and plasma parameters inside the fusion device change constantly during operation, a number of diagnostic devices and instruments need to be installed on the vacuum chamber to acquire and adjust these parameters in real time. These devices and instruments, along with their auxiliary systems, constitute the diagnostic system. The harsh physical environment inside the vacuum chamber dictates that these diagnostic devices cannot be directly exposed. Therefore, a shielding structure is needed to protect each diagnostic subsystem. Installing the various devices of the diagnostic subsystem into the shielding structure forms the diagnostic module.

[0003] The stable and safe operation of a fusion device relies on a vacuum environment. To ensure the vacuum level of the fusion device's main unit and facilitate the installation of the diagnostic system, the diagnostic module needs a sealed sleeve structure that connects to the vacuum chamber neck tube in a sealed manner. Inserted into the vacuum chamber neck tube, it achieves a complete seal of the entire vacuum chamber. Therefore, the sealing of the flange end of the diagnostic module's sealed sleeve is particularly important. Since the diagnostic system needs to transmit monitoring data from the vacuum chamber to the diagnostic control room via numerous signal lines, multiple electrical feeders are required to establish a transition connection between the vacuum and atmospheric sides. The installation accuracy of the electrical feeders and the sealed sleeve, as well as the quality of the sealing weld on the atmospheric side, directly affect the vacuum level of the vacuum chamber.

[0004] The diagnostic module mainly consists of diagnostic subsystem components, subsystem cables, electrical feeders, a module shielding block, and a sealed sleeve, and is installed inside the neck tube of each window of the vacuum chamber component. The main installation steps are as follows: first, the diagnostic subsystem components, subsystem cables, and electrical feeders are mounted on the module shielding block to form an assembly; then, the module shielding block assembly is inserted into the sealed sleeve along the track inside the sealed sleeve to form the diagnostic module; finally, the entire diagnostic module is installed into the vacuum chamber neck tube using a clamping fixture.

[0005] During the insertion of the plug-in shielding block assembly into the enclosed sleeve, multiple power feeders connected to numerous subsystem cables need to be aligned simultaneously with the pre-drilled holes on the flange end face of the enclosed sleeve head. Then, a sealing weld is performed on the outside of the enclosed sleeve between the power feeders and the flange end face. Since the cables are used for signal transmission or power supply, they cannot serve as a support structure for the power feeders; therefore, a cantilever support structure is required to connect the shielding block and the power feeders. The power feeders, after being connected to numerous cables, have a significant mass, which can easily cause deformation of the support structure and lead to the power feeders sag naturally. It is difficult to ensure that the atmospheric side wiring surface of the power feeder at the other end of the cantilever is parallel to the flange end face of the enclosed sleeve. Excessive parallelism deviation will reduce the quality of the sealing weld and cause vacuum leakage.

[0006] Both the plug-in shielding block assembly and the enclosed sleeve are made of stainless steel, weighing over 15 tons and exceeding 3 meters in length. Their production, processing, and assembly inherently involve errors. Furthermore, the multi-hole docking installation operation demands extremely high precision in component manufacturing, significantly increasing processing costs. In addition, unavoidable errors necessitate fine-tuning of multiple electrical feeders during installation. However, once the plug-in shielding block assembly is installed in the enclosed sleeve, there is no room for adjustment, making it impossible to insert tools into the sleeve for operation. Therefore, there is an urgent need for an auxiliary mechanism that provides support for the electrical feeders and allows for multi-hole docking and adjustment operations within the enclosed cavity to address the installation problems of the plug-in assembly.

[0007] Traditional methods exist, such as increasing the length of the plug-in shielding block and directly fixing one end of the electrical feeder to the shielding block. This solves the downward displacement caused by the weight of the electrical feeder during installation. However, this significantly increases the weight of the entire diagnostic plug-in, raises material costs, and places higher load requirements on the installation fixtures holding the shielding block. This also increases the difficulty of the subsequent process of installing the entire diagnostic plug-in into the vacuum chamber neck tube, and cannot solve the hole alignment problems caused by processing and assembly errors. Alternatively, traditional rigid connection structures, such as ordinary steel pipes or support frame structures, are used between the shielding block and the electrical feeder to fix the electrical feeder, which has a large number of cables connected, at a position as far away from the shielding block as possible. This effectively reduces the total weight of the plug-in shielding block, but it still cannot solve the problems of multi-hole docking and installation position adjustment. Summary of the Invention

[0008] In view of the current state of the technology mentioned in the background art, and in order to overcome the corresponding defects in the prior art, the present invention specifically discloses a flexible hole-fitting mechanism and method for electrical feedthrough installation in the closed cavity of a fusion device, which can better solve the problems mentioned in the background art.

[0009] To overcome the deficiencies of the existing technology, those skilled in the art provide the following technical solutions: A flexible orifice mounting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device includes a spring sleeve, a flexible support rod, a connecting disc, and an electrical feedthrough component connected in sequence. The flexible support rod is a circular tubular structure with several strip-shaped slits arranged in an annular array on its walls between its two ends. The length direction of these slits is parallel to the bearing of the flexible support rod, forming a strip-shaped flexible structure between its two ends. One end of the flexible support rod is inserted into and coaxially fixed to the elastic sleeve, while the other end of the flexible support rod is coaxially fixed to the connecting disc. The connecting disc is coaxially fixed to the end of the electrical feedthrough component furthest from its internal pin.

[0010] Furthermore, one end of the spring sleeve has a flange plate with a threaded hole, and the other end is for inserting one end of the flexible support rod, and there is an annular positioning step inside the elastic sleeve; one end of the flexible support rod has an annular disc base integrally formed, the disc base being a circular boss shape, so as to be coaxially inserted with one end of the spring sleeve, and the stepped surface of the disc base is fitted and aligned with the positioning step.

[0011] Furthermore, a cylindrical spring is fitted on the outer side of a section of the flexible support rod located inside the spring sleeve. One end of the cylindrical spring abuts against the end face of the disc base, and the other end abuts against an annular sealing plate threaded onto the other end of the spring sleeve.

[0012] Furthermore, the annular sealing plate has a coaxially arranged annular positioning ring on its end face, the positioning ring being coaxially inserted into the other end of the spring sleeve, and the other end of the cylindrical spring being located inside the positioning ring; the annular sealing plate adopts a two-half spliced ​​structure.

[0013] Furthermore, the flexible support rod is threadedly connected to the connecting disc, and the connecting disc is threadedly connected to the end of the flexible support rod. The connecting disc is provided with a flange with a threaded hole for threaded connection to the end face of the electrical feeder.

[0014] Furthermore, it also includes a clamping fixture for clamping and assembling the shielding block. The clamping fixture includes a pair of horizontal clamping arms and two pairs of vertical clamping arms. Each pair of horizontal clamping arms and each pair of vertical clamping arms are connected by a double-ended stud thread. When each double-ended stud rotates, it drives the corresponding pair of clamping arms to move closer or further away from each other to clamp or release the shielding block.

[0015] Furthermore, the lateral clamping arm is driven by a lateral double-ended stud. A lateral worm is coaxially located in the center of the lateral double-ended stud. A driven worm wheel is coaxially fixed at each end of the lateral worm. Each driven worm wheel meshes with a corresponding vertical worm. The vertical worm is coaxially fixed on the vertical double-ended stud used to drive the vertical clamping arm to move, so as to realize the linkage of all clamping arms. Each clamping arm includes a positioning post with a positioning block fixed on it, and an L-shaped curved arm fixed perpendicularly to the positioning post. The free end of the curved arm is threadedly connected to the corresponding stud. The free end of the positioning post is fixed with a positioning block. The positioning block is adapted to be built into the corresponding clamping interface of the shielding block to realize the clamping and positioning of the shielding block during installation.

[0016] Furthermore, it also includes a frame, which includes upper and lower crossbeams. Two pairs of first bushings on the crossbeams are used for the rotatable installation of two vertical double-ended studs. At each end of the crossbeams, a second bushing is fixed. The two second bushings are used for the rotatable installation of the transverse double-ended studs. Each crank arm also has a pair of guide rods fixed at its free end. The guide rods slide axially through the sidewall of the corresponding bushing to guide the crank arm to move linearly. A drive worm gear is rotatably mounted in the center of one of the crossbeams. The drive worm gear is driven by a motor mounted on the frame and meshes with the transverse worm. A longitudinal beam is vertically fixed in the center of the lower crossbeam. An end face positioning plate is fixed on the longitudinal beam by a sliding bolt that can slide vertically to adjust its position. The end face positioning plate is used to fit and position the end face of the shielding block. A support plate located on a horizontal plane is fixed at the bottom of the longitudinal beam. The support plate is slidably mounted on a bearing seat. The bearing seat allows the shielding block to be placed flat, and the front end of the bearing seat contacts and limits the contact with the end of the shielding block away from the clamping interface. This ensures that when the support plate slides into the groove at the bottom of the bearing seat, and the end face positioning plate contacts the end face of the shielding block, the shielding block is located in the center of the clamping area formed by all the clamping arms.

[0017] Furthermore, the driven worm gear and the vertical worm are each mounted on their respective studs via an anti-jamming structure. The anti-jamming structure includes a shoulder portion coaxially and integrally fixed to the non-threaded section of the stud. One end of the shoulder portion is recessed into one end of the driven worm gear or the vertical worm. The other end of the driven worm gear or the vertical worm has an annular T-shaped groove for sliding installation of a T-bolt. The threaded section of the T-bolt passes through a cap coaxially fixed to the non-threaded section of the stud and is then fixed by a fastening nut. This ensures that the pressure-resistant spring built into the other end of the driven worm gear or the vertical worm is in a set compression state. In this compression state, when the driven worm gear or the vertical worm is subjected to an external force and rotates, it rotates synchronously with the corresponding stud. However, when the stud cannot rotate, the driven worm gear or the vertical worm can rotate relative to the stud.

[0018] This invention also proposes a flexible hole-aligning method for installing electrical feedthroughs within a closed cavity of a fusion device. This method primarily utilizes the aforementioned flexible hole-aligning mechanism for installing electrical feedthroughs within a closed cavity of a fusion device. During installation... First, assemble the flexible orifice mechanism used for electrical feedthrough installation inside the enclosed cavity of the fusion device. The specific steps are as follows: a) Slide the cylindrical spring onto one end of the flexible support rod until it is on the other end of the flexible support rod, then install the connecting plate on top of the flexible support rod and tighten it; b) Insert the flexible support rod with cylindrical spring and connecting disc into the spring sleeve as a whole, and put the two half-ring sealing plates on the top of the spring sleeve and splice them together, and axially press the cylindrical spring, press the disc base of the flexible support rod against the circular groove of the spring sleeve, and connect the two half-ring sealing plates to the spring sleeve with bolts. c) Install the power feeder with subsystem cables onto the connector plate and connect the power feeder to the connector plate with bolts; The diagnostic plug-in structure's enclosed sleeve, shielding block, multiple flexible mating hole mechanisms, multiple subsystems, and their cable assemblies are then connected and assembled. The specific steps are as follows: S1. Assemble multiple flexible hole-fitting mechanisms according to steps a) and b). S2. Install the flexible hole-connecting mechanism with multiple uninstalled electrical feeders completed in step S1 onto the shielding block and fix it with bolts; S3. Install multiple subsystems and their cable assemblies inside the shielding block, wherein one end of the subsystem cable is connected to the subsystem inside the shielding block, and the other end is connected to the internal pin of the electrical feeder of the flexible hole-connecting mechanism. S4. Install the electrical feeder with cables onto the connecting plate of the flexible hole-connecting mechanism and fix it with bolts to form a complete shielding block assembly; S5. Use a clamping fixture to fix the shielding block assembly at one end of the clamping interface, and insert the shielding block assembly containing multiple subsystems and multiple flexible hole-aligning mechanisms into the closed sleeve along the track inside the closed sleeve; wherein, the through hole inner port at the flange end of the closed sleeve has a chamfer angle so as to guide the flexible hole-aligning mechanism during the installation process. S6. Finally, multiple electrical feeders are sealed and welded to the flange end on the outside of the closed sleeve to form a complete diagnostic module, which is in preparation for the subsequent installation of the diagnostic module into the vacuum chamber neck tube.

[0019] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention provides a flexible mating mechanism and method for installing electrical feeders within a closed cavity of a fusion device. While ensuring the shielding function of the diagnostic plug-in, it meets the overall weight reduction requirements of the plug-in structure, achieves the function of tightening and supporting the electrical feeders at the far end of the shielding block assembly, and also features flexible adjustment. It solves the problem of difficulty in aligning multiple electrical feeders carried at one end of the shielding block assembly with multiple pre-drilled holes on the rectangular flange end of the closed sleeve after the shielding block assembly is installed. The eccentricity and angle between each electrical feeder and the pre-drilled hole can be adjusted, automatically completing the mating operation of multiple electrical feeders within the closed sleeve. The mechanism described in this invention can be used in combination with different numbers and sizes of flexible mating mechanisms according to the needs of the diagnostic plug-in and diagnostic subsystem, and has a high degree of freedom in installation position. This invention has a simple and effective structure, an adjustable installation process, improves the accuracy margin of production, processing, and installation, greatly improves the overall assembly efficiency of the diagnostic plug-in, and reduces the production and installation costs of the diagnostic plug-in.

[0020] Other functions and features of the present invention will be described in detail in the following embodiments to provide a full understanding of the concept of the present invention and to enable its practical application in production. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a flexible hole-fitting mechanism according to the present invention; Figure 2 for Figure 1 A three-dimensional view of the spring sleeve at point A in the middle; Figure 3 This is an axial sectional view of the spring sleeve; Figure 4 This is a schematic diagram of a ring-shaped sealing plate; Figure 5 This is a structural diagram of a flexible support rod; Figure 6 A schematic diagram of the connection structure between the flexible support rod and the spring sleeve; Figure 7 This is a structural diagram of the connecting disk; Figure 8 This is a schematic diagram of an electrical feeder; Figure 9 This is a schematic diagram showing a connection between a shielding block and a flexible hole-connecting mechanism. Figure 10 Front view of the clamping fixture holding the shielding block located on the carrier; Figure 11 This is the front view of the support. Figure 12 A schematic diagram of a cross-section when the clamping fixture holds the shielding block; Figure 13 Left view of the upper clamping arm; Figure 14 A schematic diagram showing the connection between the driven worm gear and the transverse worm gear via a transverse double-ended stud with an anti-jamming structure. Figure 15 A 3D view of the diagnostic plug-in closed sleeve; Figure 16 This is a schematic diagram of the end face of the closed sleeve; Figure 17 for Figure 16 BB section view; Figure 18 This is a schematic diagram of the diagnostic plugin.

[0022] As shown in the figure, the components include: spring sleeve 1, flange plate 101, positioning step 102, annular sealing plate 2, positioning ring 201, flexible support rod 3, disc base 301, strip slot 302, connecting disc 4, electrical feeder 5, internal pin 501, cylindrical spring 6, shielding block 7, clamping interface 701, track 702, through hole 703, subsystem cable 8, enclosed sleeve 9, clamping arm 10, positioning block 11, and transverse double-ended stud 1. 2. Vertical double-headed stud 13, upper crossbeam 14, lower crossbeam 15, transverse worm 16, driven worm wheel 17, T-shaped slide groove 1701, vertical worm 18, first bushing 19, second bushing 20, guide rod 21, driving worm wheel 22, longitudinal beam 23, sliding bolt 24, end face positioning plate 25, support plate 26, bearing seat 27, shaft shoulder 28, pressure cap 29, T-bolt 30, fastening nut 31, pressure-resistant spring 32. Detailed Implementation

[0023] Based on the accompanying drawings and the following description, the technical solutions in the embodiments of the present invention can be clearly and completely described. However, it should be understood that the embodiments mentioned herein are merely one or several specific methods of the present invention, and not all implementation structures or method steps.

[0024] like Figure 1 As shown, this invention proposes a flexible hole-fitting mechanism for installing an electrical feedthrough within a closed cavity of a fusion device, comprising a spring sleeve 1, a spring, a sealing plate for the spring sleeve 1, a flexible support rod 3, a connecting plate 4, and an electrical feedthrough, among other components. The interconnections between the components are as follows: Figure 1 As shown, specifically, one end of the flexible support rod 3 is inserted as follows: Figures 2-3 The spring sleeve 1 shown has two semi-annular elements mounted on its top, forming a... Figure 4 The annular sealing plate 2 shown is fixedly connected to the spring sleeve 1 by bolts. Figure 5 As shown, the flexible support rod 3 has several strip-shaped slots 302 arranged in a ring array, so that the flexible support rod 3 becomes a strip-shaped tubular structure. Figure 6The spring sleeve 1 contains a cylindrical spring 6, which is fitted onto the spring sleeve 1. Figure 5 On the flexible support rod 3 shown, a cylindrical spring 6 is located between the bottom step of the flexible support rod 3 and the sealing plate of the spring sleeve 1, pressing the flexible support rod 3 tightly inside the spring sleeve 1. The other end of the flexible support rod 3 is connected to the connecting plate 4 by threads, and the connecting plate 4 is connected to the support end of the electrical feeder 5 by bolts.

[0025] In this embodiment, the spring sleeve 1 is as follows: Figure 2 , Figure 3 , Figure 6 As shown, the spring sleeve 1 is goblet-shaped with six bolt holes at the top, which are bolted to the spliced ​​annular seal. It is hollow inside, and the bottom is a connecting base with six through holes 703, allowing the entire flexible mating mechanism to be connected to the shielding block 7 of the diagnostic plug-in via bolts. The connecting base has a circular groove in the middle with an inclined surface. In actual manufacturing, the annular sealing plate 2 can be... Figure 3 As shown, the structure consists of two semi-circular components, which are grouped together. One side of the annular sealing plate 2 is provided with a positioning ring 201 for limiting the cylindrical spring 6. Each half of the annular sealing plate 2 is provided with three through holes 703, which can be connected to the spring sleeve 1 by bolts.

[0026] In this embodiment, the flexible support rod 3 is as follows: Figure 5 As shown, the flexible support rod 3 is hollow inside, with a disc-shaped base 301 at the bottom. One side of the disc-shaped base 301 has a slightly curved arc surface, which can abut against the inclined surface of the circular groove inside the spring sleeve 1, making line-to-surface contact. This facilitates automatic adjustment of the flexible support rod 3 during installation. The other side of the base has a flat surface for supporting the cylindrical spring 6. The middle part of the flexible support rod 3 has a strip-like structure, that is, multiple grooves are cut to reduce the structural rigidity of the flexible support rod 3, forming the aforementioned strip-shaped gap 302, allowing the entire flexible support rod 3 to undergo a certain degree of flexible deformation during the assembly of the diagnostic plug-in. The top of the flexible support rod 3 has an external thread, which can be connected to the connecting disc 4.

[0027] In specific manufacturing, this connecting disk 4 as follows Figure 7 As shown, it is stepped, with internal threads for connection to the top of the flexible support rod 3. The disc edge has six through holes 703, which can be bolted to the electrical feeder 5; the electrical feeder 5 is as follows... Figure 8 As shown, it is cylindrical, with 6 through holes 703 at one end, which are connected to the connecting plate 4 by bolts. There are 3 open rectangular slots on the side to provide space for the arrangement of subsystem cables 8. The top of the other end has a welding bevel, and the middle is a sealing plate with a large number of pins, which can be connected to the subsystem cables.

[0028] In order to clamp such Figure 9The shielding block 7 shown is clamped and positioned using four rectangular grooves on the top and bottom sides and two rectangular grooves on the left and right sides. A clamping fixture is used for clamping and positioning, as shown in Figure 10. Figure 12 As shown, the tooling bag is clamped by a pair of horizontal clamping arms 10 and two pairs of vertical clamping arms 10, for a total of 6 clamping arms 10; each clamping arm 10 is as follows: Figure 13 As shown, all components are integrally fixed by positioning posts and L-shaped curved arms. The positioning posts are perpendicular to the curved arms, with an included angle of 90°. Each positioning post has a positioning block 11 fixed to its free end. The positioning block 11 is adapted to the corresponding rectangular groove of the clamping interface 701 of the shielding block 7. In addition, it also includes one horizontal double-ended stud 12 and two vertical double-ended studs 13. The threads of the double-ended studs can be trapezoidal threads. A horizontal worm gear 16 is coaxially fixed in the center of the horizontal double-ended stud 12. A driven worm wheel 17 is coaxially fixed at both ends of the horizontal worm gear 16. Each driven worm wheel 17 meshes with a corresponding vertical worm gear 18. The vertical worm gear 18 is coaxially fixed in the middle of the vertical double-ended stud 13.

[0029] During production, such as Figure 10 This clamping fixture also includes two crossbeams, namely the upper crossbeam 14 and the lower crossbeam 15. Two pairs of first bushings 19 are fixed on the crossbeams for the rotatable installation of two vertical double-ended studs 13. The vertical double-ended studs 13 are clearance-fitted with the first bushings 19 and can rotate freely. At each end of the two parallel crossbeams, a second bushing 20 is fixed for the rotatable installation of the transverse double-ended studs 12. A pair of guide rods 21 are fixed at the free end of each crank arm. The guide rods 21 slide axially through the side wall of the corresponding bushing and guide the crank arm to move linearly along the direction of the guide rods 21.

[0030] In this embodiment, as Figure 10 A drive worm gear 22 can be rotatably installed at the center of the lower crossbeam 15. The drive worm gear 22 meshes with the transverse worm 16. The drive worm gear 22 is driven by a geared motor (not shown in the figure) mounted on the frame to realize power transmission.

[0031] Continue reading Figure 10A longitudinal beam 23 is vertically fixed at the center of the lower crossbeam 15. The longitudinal beam 23 has a vertical elongated hole. A sliding bolt 24 passes through the elongated hole to fix the end face positioning plate 25 to the longitudinal beam 23. The sliding bolt 24 can slide vertically along the elongated hole to adjust the height of the end face positioning plate 25. A rubber buffer pad is attached to the contact surface of the end face positioning plate 25 to avoid squeezing and damaging the end face of the shielding block 7. A support plate 26 is fixed at the bottom of the longitudinal beam 23. The support plate 26 is slidably mounted on the bearing seat 27. The top two opposite inner sides of the bearing seat 27 are each provided with a positioning groove for placing the shielding block 7. The bottom is provided with a sliding groove that matches the support plate 26. The support plate 26 can slide back and forth along the sliding groove. The front end of the bearing seat 27 is provided with a stop block for contacting and limiting the end of the shielding block 7 away from the clamping interface 701. In addition, an anti-jamming structure is provided to prevent all double-ended studs from jamming and becoming unable to rotate if one of them fails to rotate. Specifically, for example... Figure 14 As shown, the driven worm gear 17 and the vertical worm 18 are each mounted on the corresponding stud via an anti-jamming structure. The anti-jamming structure includes a shoulder 28 coaxially and integrally fixed to the non-threaded section of the stud, with one end of the shoulder 28 recessed into one end of the driven worm gear 17 (or the vertical worm 18). The other end of the driven worm gear 17 (or the vertical worm 18) is provided with an annular T-shaped groove 1701, and a T-bolt 30 is slidably mounted in the T-shaped groove 1701. A pressure cap 29 is coaxially and fixedly sleeved on the non-threaded section of the stud. The threaded section of the T-bolt 30 passes through the pressure cap 29 and is fixed to the fastening nut 31, so that the pressure-resistant spring 32 built into the other end of the driven worm gear 17 (or the vertical worm 18) is in a set compression state, ensuring the transmission of friction force during normal operation. When clamping the shielding block 7 installed on the carrier 27, and when the end of the shielding block 7 away from the clamping interface 701 contacts and limits contact with the stop block at the front end of the carrier 27, the first step is to adjust the sliding bolt 24 to adjust the end face positioning plate 25 to match the height of the end face of the shielding block 7 so that the clamping fixture is in a position where all positioning blocks 11 can face the corresponding clamping interface 701. The second step is to start the reduction motor, which drives the active worm gear 22 to rotate. The active worm gear 22 drives the transverse worm 16 and the transverse double-ended stud 12 to rotate synchronously. The threads at both ends of the transverse double-ended stud 12 drive a pair of transverse clamping arms 10 to move closer to each other along the direction of the guide rod 21. At the same time, the transverse worm 16 drives the driven worm gears 17 at both ends to rotate synchronously. The driven worm gears 17 drive the vertical worm 18 and the vertical double-ended stud 13 to rotate. The two vertical double-ended studs 13 drive the corresponding pair of vertical clamping arms 10 to move closer to each other along the direction of the guide rod 21. Third, as the clamping arms 10 approach, the positioning block 11 on the positioning post gradually inserts into the clamping interface 701 of the shielding block 7 until the positioning block 11 is completely against the inner wall of the clamping interface 701. At this time, the shielding block 7 is located in the center of the clamping area surrounded by all the clamping arms 10. The motor stops running, and the clamping arms 10 remain clamped, completing the clamping and positioning of the shielding block 7 for subsequent transfer, insertion, and assembly. Fourth, after the shielding block 7 is assembled, the control motor reverses, and the driving worm gear 22 drives the transverse worm 16 and the transverse double-ended stud 12 to reverse, and the transverse clamping arms 10 move away from each other. At the same time, the driven worm gear 17, the vertical worm 18, and the vertical double-ended stud 13 reverse, and the vertical clamping arms 10 move away from each other. The positioning block 11 disengages from the clamping interface 701 of the shielding block 7, the end face positioning plate 25 separates from the end face of the shielding block 7, and the bearing seat 27 is pulled to remove the shielding block 7, completing one clamping and assembly process. It should be noted that when the clamping arm 10 is driven normally, the driven worm wheel 17 (or vertical worm 18) is driven by the horizontal worm 16 (or driven worm wheel 17). Since the pressure spring 32 is in a compressed state, it presses the driven worm wheel 17 (or vertical worm 18) against the shaft shoulder 28. The friction force drives the corresponding double-ended studs to rotate synchronously, thereby realizing the movement of the clamping arm 10. When the studs are stuck due to foreign objects, excessive load, or especially due to installation and processing reasons, the two clamping arms 10 on one of the double-ended studs have clamped the shielding block 7 and cannot rotate. Due to the continuous application of torque, the driven worm wheel 17 (or vertical worm 18) can rotate relative to the pressure cover 29, that is, relative to the corresponding stud, to avoid the studs being unable to rotate and affecting the rotation of the other studs. Specifically, when relative rotation occurs, the corresponding driven worm gear 17 (or vertical worm 18) rotates around the stud between the aforementioned shoulder 28 and the pressure cap 29, avoiding motor overload and the stopping of rotation of the remaining studs or worms. This achieves linkage of all double-ended studs and avoids the problem of the remaining studs stopping after one stud stops rotating. It also avoids excessive clamping force from damaging the shielding block 7.

[0032] The assembly method of the flexible hole-fitting mechanism in this embodiment is as follows: a) Insert the cylindrical spring 6 into one end of the flexible support rod 3 and place it at the bottom of the flexible support rod. Then install the connecting plate 4 on the top of the flexible support rod 3 and tighten it.

[0033] b) Insert the flexible support rod 3 with the cylindrical spring 6 and the connecting disc 4 into the spring sleeve 1 as a whole, place the annular sealing plate 2 on the top of the spring sleeve 1, press the cylindrical spring 6, press the disc base 301 of the flexible support rod 3 against the circular slot of the spring sleeve 1, and connect the two spring sleeve 1 sealing plates to the spring sleeve 1 with bolts.

[0034] c) Install the power feeder 5 with the subsystem cable 8 onto the connecting plate 4, and connect the power feeder 5 to the connecting plate 4 with bolts.

[0035] In this embodiment, the specific usage method of the flexible hole-fitting mechanism within the diagnostic plug-in structure is illustrated by, for example... Figure 9 , Figure 15 , Figure 18 As shown, the system includes a closed sleeve 9, a shielding block 7, multiple flexible mating mechanisms, multiple subsystems, and their cables, among other components. The interconnections and usage methods of each component are as follows: S1. Assemble multiple flexible hole-fitting mechanisms according to steps a) and b) of the above assembly method.

[0036] S2. Install the flexible hole-connecting mechanism of the multiple uninstalled electrical feeders 5 completed in step S1 onto the shielding block 7 and fix it with bolts.

[0037] S3. Install multiple subsystems and their cable assemblies inside the shielding block 7, wherein one end of the subsystem cable 8 is connected to the subsystem inside the shielding block 7, and the other end is connected to the internal pin 501 of the electrical feeder 5 of the flexible hole-connecting mechanism.

[0038] S4. Install the cable-equipped electrical feeder 5 onto the connecting plate 4 of the flexible hole-connecting mechanism and fix it with bolts to form a complete shielding block assembly.

[0039] S5. Fix the shielding block assembly to the clamping interface 701 at one end using a clamping fixture. Specifically, the clamping fixture can be the one described in the above embodiment, so that the shielding block assembly containing multiple subsystems and multiple flexible mating mechanisms can be inserted into the closed sleeve 9 along the track 702 inside the closed sleeve 9. In this embodiment, the closed sleeve 9 is as follows: Figures 15-17As shown. The inner side of the through hole 703 at the rectangular flange end of the closed sleeve 9 is provided with a slope, that is, a chamfer at the inner port, which is used for the hole alignment guide of the flexible hole alignment mechanism during the installation process. During the installation process, the flexible hole alignment mechanism will automatically align with the through hole 703 on the flange end of the closed sleeve 9 and complete the installation without the need for auxiliary adjustment.

[0040] S6. Finally, on the outside of the rectangular flange end of the closed sleeve 9, multiple electrical feeders are sealed and welded to the flange end to form a complete diagnostic module, which is in preparation for the subsequent installation of the diagnostic module into the vacuum chamber neck tube.

[0041] Based on the above-described flexible alignment mechanism and method for installing electrical feeders within the enclosed cavity of the fusion device, the problem of aligning multiple electrical feeder components 5 carried at one end of the diagnostic plug-in's shielding block assembly with multiple pre-drilled holes on the flange end of the enclosed sleeve 9 during the installation process can be effectively solved. The eccentricity and angle between each electrical feeder and the pre-drilled hole can be adjusted without tooling intervention, automatically completing the alignment operation of multiple electrical feeder components 5 within the enclosed sleeve 9. The flexible alignment mechanism in the above embodiments can be used in combination with different numbers and sizes according to the needs of the diagnostic plug-in and diagnostic subsystem. It offers high freedom of installation position, a simple and effective structure, and an adjustable installation process, improving the accuracy margin of production, processing, and installation, significantly increasing the overall assembly efficiency of the diagnostic plug-in, and reducing the production and installation costs of the diagnostic plug-in.

[0042] This invention is not limited to the field covered by this embodiment. Some well-known structures or principles have not been further described. However, those skilled in the art can theoretically know all the well-known technologies in this field prior to the application date or priority date, and can fully master all the prior art in this field. They also have the means and ability to apply these prior art in practical design. Under the technical guidance provided in this application, those skilled in the art can more comprehensively improve and implement this invention by combining their own capabilities. Furthermore, it should be noted that although the text and graphics of the above embodiments have shown specific implementation scenarios of the invention, those skilled in the art can make various obvious extensions and expansions to these embodiments without departing from the design concept of the invention, forming different embodiments. However, this does not affect the fact that the scope of protection of the invention is covered and embodied by the technical features of this claim and equivalent technical features.

Claims

1. A flexible orifice mounting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device, characterized in that: The device includes a spring sleeve (1), a flexible support rod (3), a connecting disc (4), and an electrical feeder (5) connected in sequence. The flexible support rod (3) is a circular tubular structure with several strip-shaped slits (302) arranged in annular array on the tube wall between its two ends. The length direction of the strip-shaped slits (302) is parallel to the bearing of the flexible support rod (3), so as to form a strip-shaped flexible structure between the two ends of the flexible support rod (3). One end of the flexible support rod (3) is inserted into the elastic sleeve and fixed coaxially therewith. The other end of the flexible support rod (3) is coaxially fixed to the connecting disc (4). The connecting disc (4) is coaxially fixed to the end of the electrical feeder (5) away from its internal pin (501).

2. The flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 1, characterized in that: One end of the spring sleeve (1) has a flange plate (101) with a screw hole, and the other end is for inserting one end of the flexible support rod (3). The flexible sleeve has an annular positioning step (102). One end of the flexible support rod (3) has an annular disc base (301) integrally formed. The disc base (301) is a circular boss so as to be coaxially inserted with one end of the spring sleeve (1). The step surface of the disc base (301) is fitted and aligned with the positioning step (102).

3. The flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 2, characterized in that: The flexible support rod (3) is fitted with a cylindrical spring (6) on the outer side of a section inside the spring sleeve (1). One end of the cylindrical spring (6) is in contact with the end face of the disc base (301), and the other end is in contact with the annular sealing plate (2) threaded to the other end of the spring sleeve (1).

4. The flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 3, characterized in that: The annular sealing plate (2) has an annular positioning ring (201) coaxially on its end face. The positioning ring (201) is coaxially inserted into the other end of the spring sleeve (1), and the other end of the cylindrical spring (6) is located inside the positioning ring (201). The annular sealing plate (2) has a two-half spliced ​​structure.

5. The flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 1, characterized in that: The flexible support rod (3) is threadedly connected to the connecting plate (4), and the connecting plate (4) is threadedly connected to the end of the flexible support rod (3). The connecting plate (4) is provided with a flange with a screw hole for threaded connection to the end face of the electric feeder (5).

6. The flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 1, characterized in that: It also includes a clamping fixture for clamping and assembling the shielding block (7). The clamping fixture includes a pair of horizontal clamping arms (10) and two pairs of vertical clamping arms (10). Each pair of horizontal clamping arms (10) and each pair of vertical clamping arms (10) are connected by a double-ended stud thread. When each double-ended stud rotates, it drives the corresponding pair of clamping arms (10) to move closer or further away from each other to clamp or release the shielding block (7).

7. The flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 6, characterized in that: The transverse clamping arm (10) is driven by a transverse double-ended stud (12). The transverse double-ended stud (12) has a transverse worm (16) coaxially in the center. A driven worm wheel (17) is coaxially fixed at both ends of the transverse worm (16). Each driven worm wheel (17) meshes with a corresponding vertical worm (18). The vertical worm (18) is coaxially fixed on a vertical double-ended stud (13) used to drive the vertical clamping arm (10) to move, so as to realize the linkage of all clamping arms (10). Each clamping arm (10) includes a positioning post with a positioning block (11) fixed on it, and an L-shaped curved arm fixed perpendicularly to the positioning post. The free end of the curved arm is threadedly connected to the corresponding stud. The free end of the positioning post is fixed with a positioning block (11). The positioning block (11) is adapted to be built into the corresponding clamping interface (701) of the shielding block (7) to realize the clamping and positioning of the shielding block (7) during installation.

8. The flexible hole-connecting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 7, characterized in that: It also includes a frame, which includes two crossbeams, upper and lower. Two pairs of first bushings (19) on the crossbeams are used for the rotatable installation of two vertical double-headed studs (13). A second bushing (20) is fixed at each end between the crossbeams. The two second bushings (20) are used for the rotatable installation of the horizontal double-headed studs (12). A pair of guide rods (21) are also fixed at the free end of each crank arm. The guide rods (21) slide axially through the side wall of the corresponding bushing to guide the crank arm to move linearly. A drive worm gear (22) is rotatably mounted in the center of one of the crossbeams. The drive worm gear (22) is driven by a motor mounted on the frame. The drive worm gear (22) meshes with the transverse worm (16). A longitudinal beam (23) is vertically fixed in the center of the lower crossbeam (15). An end face positioning plate (25) is fixed on the longitudinal beam (23) by a sliding bolt (24) that can slide vertically to adjust its position. The end face positioning plate (25) is used to fit and position itself against the end face of the shielding block (7). The bottom end of the longitudinal beam (23) is fixed There is a tray (26) located on a horizontal plane. The tray (26) is slidably mounted on a support (27) for the shielding block (7) to be laid flat. The front end of the support (27) is in contact with the end of the shielding block (7) away from the clamping interface (701) so that when the tray (26) slides into the groove at the bottom of the support (27), the end face positioning plate (25) contacts the end face of the shielding block (7) and the shielding block (7) is located in the center of the clamping area surrounded by all the clamping arms (10).

9. A flexible hole-fitting mechanism for electrical feedthrough installation within a sealed cavity of a fusion device according to claim 7, characterized in that: The driven worm gear (17) and the vertical worm (18) are each mounted on the corresponding stud by an anti-jamming structure; the anti-jamming structure includes a shoulder (28) coaxially and integrally fixed to the non-threaded section of the stud, one end of the shoulder (28) is recessed into one end of the driven worm gear (17) or the vertical worm (18), and the other end of the driven worm gear (17) or the vertical worm (18) has an annular T-shaped groove (1701) for sliding installation of a T-bolt (30), and the threaded section of the T-bolt (30) After passing through the pressure cap (29) coaxially fixed to the non-threaded section of the stud, it is fixed by the fastening nut (31), and the pressure-resistant spring (32) built into the other end of the driven worm wheel (17) or the vertical worm (18) is in a set compression state. In this compression state, when the driven worm wheel (17) or the vertical worm (18) is rotated by an external force, it rotates synchronously with the corresponding stud. However, when the stud cannot rotate, the driven worm wheel (17) or the vertical worm (18) can rotate relative to the pressure cap (29).

10. A flexible hole-fitting method for electrical feedthrough installation within a sealed cavity of a fusion device, characterized in that, The flexible hole-connecting mechanism for electrical feedthrough installation within the enclosed cavity of the fusion device, as described in claim 4, is used for installation. During installation, First, assemble the flexible orifice mechanism used for electrical feedthrough installation inside the enclosed cavity of the fusion device. The specific steps are as follows: a) Insert the cylindrical spring (6) into one end of the flexible support rod (3) until it is on the other end of the flexible support rod, and then install the connecting plate (4) on the top of the flexible support rod (3) and tighten it. b) Insert the flexible support rod (3) with the cylindrical spring (6) and connecting disc (4) into the spring sleeve (1), and place the two half-ring sealing plates (2) on the top of the spring sleeve (1) and splice them together, and axially press the cylindrical spring (6), press the disc base (301) of the flexible support rod (3) against the circular slot of the spring sleeve (1), and connect the two half-ring sealing plates (2) to the spring sleeve (1) with bolts; c) Install the power feeder (5) with the subsystem cable (8) on the connecting plate (4) and connect the power feeder (5) to the connecting plate (4) by bolts; The closed sleeve (9), shielding block (7), multiple flexible mating hole mechanisms, multiple subsystems and their cable assemblies of the diagnostic plug-in structure are then connected and assembled. The specific steps are as follows: S1. Assemble multiple flexible hole-fitting mechanisms according to steps a) and b). S2. Install the flexible hole-connecting mechanism of the multiple uninstalled electrical feeders (5) completed in step S1 onto the shielding block (7) and fix it with bolts; S3. Install multiple subsystems and their cable assemblies inside the shielding block (7), wherein one end of the subsystem cable (8) is connected to the subsystem inside the shielding block (7), and the other end is connected to the internal pin (501) of the electrical feeder (5) of the flexible hole mechanism. S4. Install the cable-equipped electrical feeder (5) on the connecting plate (4) of the flexible hole-connecting mechanism and fix it with bolts to form a complete shielding block assembly; S5. Using a clamping fixture and a clamping interface (701) at one end of the shielding block assembly, the shielding block assembly containing multiple subsystems and multiple flexible hole-aligning mechanisms is inserted into the closed sleeve (9) along the track (702) inside the closed sleeve (9); wherein, the inner port of the through hole (703) at the flange end of the closed sleeve (9) has a chamfer angle so as to guide the flexible hole-aligning mechanism during the installation process; S6. Finally, multiple electrical feeders are sealed and welded to the flange end on the outside of the rectangular flange end of the closed sleeve (9) to form a complete diagnostic plug-in, which is in preparation for the subsequent installation of the diagnostic plug-in into the vacuum chamber neck tube.

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