An adjustable bolt fastening structure for fusion reactor blanket mounting

Abstract

The application relates to the technical field of fusion devices, and discloses an adjustable bolt fastening structure for fusion reactor cladding installation, which comprises a base and an adjusting bolt, the base comprises a mounting cylinder, a mounting nut, a flexible support, a spherical washer and an end face fixing ring, the flexible support is arranged outside the mounting nut, and the mounting nut is arranged in the mounting cylinder; the spherical washer and the end face fixing ring are arranged in the mounting cylinder and abut against the rear end of the mounting nut; an arc surface is arranged at one end of the mounting nut abutting against the spherical washer; a plurality of elastic sheets abutting against the mounting cylinder are arranged at the outer edge of the spherical washer; and the end face fixing ring is threadedly connected with the mounting cylinder; the adjusting bolt comprises an outer cylinder and a bolt assembly, the bolt assembly is arranged in the outer cylinder and penetrates out of the front end of the outer cylinder, the bolt assembly is inserted into the mounting cylinder and is threadedly connected with the mounting nut. Compared with the prior art, the adjustable mounting nut and the spherical washer are arranged to compensate for the error generated during installation, so that the effective connection between the fusion reactor vacuum chamber and the fusion reactor cladding is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of fusion device technology, and in particular to an adjustable bolt fastening structure for fusion reactor blanket installation. Background Technology

[0002] As a key component in fusion devices, the blanket is mainly used to absorb radiation and particle flux from plasma and the central beam, provide thermal shielding for the vacuum chamber and external components, provide shielding for diagnostics within the vacuum chamber, and provide channels for equipment such as plasma diagnostics, observation systems, microwave antennas, and the central beam injector.

[0003] The cladding unit typically weighs over three tons and is fixed to the inner wall of the vacuum chamber during assembly using connecting bolts and other structures. However, deformation and processing errors during the manufacturing and assembly of the vacuum chamber and the cladding can cause the cladding and vacuum chamber to shift. How to compensate for and correct the positional deviation between the two is a problem that urgently needs to be solved. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide an adjustable bolt fastening structure for fusion reactor blanket installation to correct the misalignment between the fusion reactor blanket and the fusion reactor vacuum chamber.

[0005] Based on this, the present invention provides an adjustable bolt fastening structure for fusion reactor blanket installation, comprising: A base is disposed within and connected to the vacuum chamber of the fusion reactor. The base includes a mounting cylinder, a mounting nut, a flexible support, a spherical washer, and an end-face fixing ring. The mounting nut is fitted inside the mounting cylinder after the flexible support is sleeved over it. The spherical washer and the end-face fixing ring are disposed inside the mounting cylinder and abut against the mounting nut. The side of the mounting nut that abuts against the spherical washer has an arc surface. The outer edge of the spherical washer has several spring pieces that abut against the mounting cylinder. The end-face fixing ring is threadedly connected to the mounting cylinder. An adjusting bolt is located in and connected to the fusion reactor envelope. The adjusting bolt includes an outer cylinder and a bolt assembly. The bolt assembly is located in the outer cylinder and extends out from the front end of the outer cylinder. The bolt assembly is inserted into the mounting cylinder and threadedly connected to the mounting nut.

[0006] In some embodiments of this application, the bolt assembly includes a screw, a positioning rod, and an adjusting spring. The screw is disposed inside the outer cylinder and extends out of the outer cylinder from its front end. The positioning rod and the adjusting spring are disposed inside the screw. The front end of the positioning rod passes through the front end of the positioning rod and extends to the outside of the screw. The rear end of the screw is provided with a fixing plug that is fixedly connected thereto. The two ends of the adjusting spring abut against the rear end of the positioning rod and the fixing plug, respectively.

[0007] In some embodiments of this application, the base further includes a stop ring, which is disposed inside the mounting cylinder and abuts against the side of the mounting nut away from the spherical washer. The stop ring is provided with a positioning block, and the mounting nut is provided with a positioning groove that matches the positioning block.

[0008] In some embodiments of this application, the base further includes a limiting ring located between the stop ring and the mounting nut and abutting against both.

[0009] In some embodiments of this application, the flexible support is a U-shaped ring, the inner ring of the flexible support is sleeved on the mounting nut, the outer ring of the flexible support abuts against the mounting cylinder, and the outer ring of the flexible support is also provided with a plurality of support grooves.

[0010] In some embodiments of this application, the adjusting bolt further includes a support ring, which is sleeved on the bolt assembly and abuts against the inner wall of the outer cylinder.

[0011] In some embodiments of this application, the adjusting bolt further includes a rear cover, which is disposed at and fixedly connected to the rear end of the outer cylinder, and the rear cover abuts against the rear end of the screw.

[0012] In some embodiments of this application, the adjusting bolt further includes an end face adjusting ring, which is disposed at the front end of the outer cylinder and fixedly connected thereto.

[0013] The adjustable bolt fastening structure for fusion reactor blanket installation provided in this embodiment of the invention has the following advantages compared with the prior art: This invention provides an adjustable bolt fastening structure for fusion reactor blanket installation, comprising a base located within the fusion reactor vacuum chamber and an adjusting bolt located within the fusion reactor blanket. Specifically, the base includes an mounting cylinder, a mounting nut, a flexible support, a spherical washer, and an end-face fixing ring. The mounting nut is fitted inside the mounting cylinder after the flexible support is fitted over it. The flexible support abuts against the inner wall of the mounting cylinder and the outer wall of the mounting nut to assemble the mounting nut into the mounting cylinder. The spherical washer and the end-face fixing ring are located inside the mounting cylinder and abut against the rear end of the mounting nut. One end of the mounting nut abutting against the spherical washer has an arc surface to adjust the orientation of the mounting nut. The outer edge of the spherical washer has several spring pieces that abut against the mounting cylinder. The end-face fixing ring is threadedly connected to the mounting cylinder. Furthermore, the adjusting bolt includes an outer cylinder and a bolt assembly. The bolt assembly is located inside the outer cylinder and extends out from the front end of the outer cylinder. The bolt assembly is inserted into the mounting cylinder and threadedly connected to the mounting nut. Based on the above structure, during use, the mounting cylinder of the base is welded to the inner and outer walls of the fusion reactor vacuum chamber. Then, a flexible support is installed over the mounting nut. The mounting nut, spherical washer, and end face fixing ring are placed inside the mounting cylinder. The flexible support abuts against the mounting cylinder and the mounting nut, thus suspending the mounting nut inside the mounting cylinder. At the same time, the flexible support can drive the mounting nut to move along the mounting cylinder when the bolt assembly is inserted into the mounting nut to avoid damage to the mounting nut. Meanwhile, the end of the mounting nut facing the spherical washer has an arc surface, and the spherical washer abuts against the mounting cylinder through the outer edge spring piece. The movement of the mounting nut can drive the main body of the spherical washer to move inside the mounting cylinder, compensating for the positional deviation caused when the adjusting bolt is assembled to the base. The outer cylinder of the adjusting bolt is pre-set in the mounting hole of the fusion reactor blanket through threads. The bolt assembly passes through the outer cylinder and is inserted into the mounting nut and threadedly connected to the mounting nut to achieve a fixed connection between the fusion reactor vacuum chamber and the fusion reactor blanket. Thus, this application compensates for errors that occur during installation by setting an installation nut and a spherical washer that can move inside the installation cylinder, thereby ensuring an effective connection between the fusion reactor vacuum chamber and the fusion reactor blanket. Attached Figure Description

[0014] Figure 1 This is an assembly diagram of the adjustable bolt fastening structure according to some embodiments of the present invention; Figure 2 This is a schematic diagram of the external structure of the adjustable bolt fastening structure according to some embodiments of the present invention; Figure 3 This is a schematic diagram of the internal structure of the adjustable bolt fastening structure according to some embodiments of the present invention; Figure 4 This is a cross-sectional schematic diagram of an adjustable bolt fastening structure according to some embodiments of the present invention; Figure 5 This is an exploded view of the base structure according to some embodiments of the present invention; Figure 6 This is a schematic diagram of the structure of the mounting nut according to some embodiments of the present invention; Figure 7 This is a schematic diagram of the structure of the stop ring according to some embodiments of the present invention; Figure 8 This is a schematic diagram of the flexible support structure according to some embodiments of the present invention; Figure 9 This is a schematic diagram of the structure of a spherical washer according to some embodiments of the present invention; Figure 10 The above are exploded views of the adjusting bolts in some embodiments of the present invention. Figure 11 This is a cross-sectional schematic diagram of a bolt assembly according to some embodiments of the present invention.

[0015] In the diagram, 1. Base; 11. Mounting cylinder; 12. Stop ring; 121. Positioning block; 13. Limiting ring; 14. Flexible support; 141. Inner ring; 142. Outer ring; 143. Support groove; 15. Mounting nut; 151. Positioning groove; 16. Spherical washer; 161. Spring; 17. End face fixing ring; 2. Adjusting bolt; 21. Outer cylinder; 22. Bolt assembly; 221. Screw; 222. Positioning rod; 223. Adjusting spring; 224. Fixing plug; 23. Support ring; 24. Rear cover; 25. End face adjusting ring; 3. Fusion reactor vacuum chamber; 4. Fusion reactor blanket. Detailed Implementation

[0016] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] It should be understood that the terms "before," "after," etc., are used in this invention to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, "before" information can also be called "after" information, and "after" information can also be called "before" information, without departing from the scope of this invention.

[0018] like Figures 1 to 11As shown, the present invention provides an adjustable bolt fastening structure for fusion reactor blanket installation, including a base 1 disposed within the fusion reactor vacuum chamber 3 and an adjusting bolt 2 disposed within the fusion reactor blanket 4. Specifically, the base 1 includes an mounting cylinder 11, a mounting nut 15, a flexible support 14, a spherical washer 16, and an end face fixing ring 17. The mounting nut 15 is fitted inside the mounting cylinder 11 after the flexible support 14 is disposed outside it. The flexible support 14 abuts against the inner wall of the mounting cylinder 11 and the outer wall of the mounting nut 15 to assemble the mounting nut 15 into the mounting cylinder 11. The spherical washer 16 and the end face fixing ring 17 are also provided. The face fixing ring 17 is located inside the mounting cylinder 11 and abuts against the rear end of the mounting nut 15. The end of the mounting nut 15 that abuts against the spherical washer 16 has an arc surface to adjust the orientation of the mounting nut 15. The outer edge of the spherical washer 16 has several spring pieces 161 that abut against the mounting cylinder 11. The face fixing ring 17 is threadedly connected to the mounting cylinder 11. Furthermore, the adjusting bolt 2 includes an outer cylinder 21 and a bolt assembly 22. The bolt assembly 22 is located in the outer cylinder 21 and extends out from the front end of the outer cylinder 21. The bolt assembly 22 is inserted into the mounting cylinder 11 and threadedly connected to the mounting nut 15.

[0019] Based on the above structure, during use, the mounting cylinder 11 of the base 1 is welded to the inner and outer walls of the fusion reactor vacuum chamber 3. Then, a flexible support 14 is fitted over the mounting nut 15. The mounting nut 15, spherical washer 16, and end face fixing ring 17 are placed inside the mounting cylinder 11. The flexible support 14 abuts against the mounting cylinder 11 and the mounting nut 15, thus suspending the mounting nut 15 within the mounting cylinder 11. Simultaneously, the flexible support 14 can drive the mounting nut 15 to move along the mounting cylinder 11 when the bolt assembly 22 is inserted into the mounting nut 15, preventing damage to the mounting nut 15. The end of the nut 15 facing the spherical washer 16 has an arc surface, and the spherical washer 16 abuts against the mounting cylinder 11 through the outer edge spring piece 161. The movement of the mounting nut 15 can cause the main body of the spherical washer 16 to move inside the mounting cylinder 11, compensating for the positional deviation caused when the adjusting bolt 2 is assembled to the base 1. The outer cylinder 21 of the adjusting bolt 2 is pre-set in the mounting hole of the fusion reactor blanket 4 through threads, and the bolt assembly 22 passes through the outer cylinder 21 and is threaded into the mounting nut 15 to achieve a fixed connection between the fusion reactor vacuum chamber 3 and the fusion reactor blanket 4. In this way, by setting the mounting nut 15 and the spherical washer 16, which can move inside the mounting cylinder 11, this application compensates for the error generated during installation, thereby ensuring the effective connection between the fusion reactor vacuum chamber 3 and the fusion reactor blanket 4.

[0020] Optionally, in some embodiments of this application, the bolt assembly 22 includes a screw 221, a positioning rod 222, and an adjusting spring 223. The screw 221 is disposed inside the outer cylinder 21 and extends out of the outer cylinder 21 from the front end of the outer cylinder 21. The positioning rod 222 and the adjusting spring 223 are disposed inside the screw 221. The front end of the positioning rod 222 passes through the front end of the positioning rod 222 and extends to the outside of the screw 221. The rear end of the screw 221 is provided with a fixing plug 224 fixedly connected thereto. The two ends of the adjusting spring 223 abut against the rear end of the positioning rod 222 and the fixing plug 224, respectively. Based on the above structure, during use, the operator uses a tool to push the screw 221 along the axis of the outer cylinder 21 to approach and insert it into the mounting cylinder 11. The screw 221, once inside the mounting cylinder 11, is threadedly connected to the mounting nut 15. As the screw 221 continues to penetrate deeper, at a certain moment, the positioning rod 222 abuts against the mounting cylinder 11, and the screw 221 continues to be controlled to penetrate deeper into the mounting cylinder 11. The two ends of the positioning rod 222 abut against the mounting cylinder 11 and the adjusting spring 223 respectively, thereby achieving the positioning of the mounting nut 15 and the screw 221.

[0021] Similar to the function of the adjusting spring 223, in some embodiments of this application, the flexible support 14 is a U-shaped ring. When assembled, the inner ring 141 of the flexible support 14 is sleeved on the mounting nut 15, and the outer ring 142 of the flexible support 14 abuts against the mounting cylinder 11. Furthermore, the outer ring 142 of the flexible support 14 has several support grooves 143. Based on the setting of the support grooves 143, the outer ring 142 of the flexible support 14 can provide a certain displacement for the mounting nut 15 in the mounting cylinder 11, thereby realizing compensation for installation offset.

[0022] Furthermore, in some embodiments of this application, the base 1 further includes a stop ring 12. The stop ring 12 is disposed inside the mounting cylinder 11 and abuts against the side of the mounting nut 15 away from the spherical washer 16. The stop ring 12 is provided with a positioning block 121, and the mounting nut 15 is provided with a positioning groove 151 that matches the positioning block 121. During assembly, the positioning block 121 of the stop ring 12 is engaged in the positioning groove 151 of the mounting nut 15. Based on the above structure, the stop ring 12 is fixedly connected to the mounting cylinder 11 after being disposed thereon. The setting of the stop ring 12 can limit the mounting nut 15, preventing it from rotating with the rotation of the adjusting bolt 2 and affecting the assembly effect of the two, further reducing assembly errors.

[0023] Furthermore, in some embodiments of this application, the base 1 further includes a limiting ring 13, which is disposed inside the mounting cylinder 11 and located between the stop ring 12 and the mounting nut 15, that is, the limiting ring 13 abuts against the stop ring 12 and the mounting nut 15. The setting of the limiting ring 13 further separates the stop ring 12 from the flexible support 14 ring, preventing the flexible support 14 from directly abutting against the stop ring 12. Optionally, in some embodiments of this application, the adjusting bolt 2 includes a support ring 23, which is sleeved on the bolt assembly 22 and abuts against the inner wall of the outer cylinder 21 to achieve an effective connection between the outer cylinder 21 and the screw 221; further, the adjusting bolt 2 also includes a rear cover 24, which is disposed at the rear end of the outer cylinder 21 and fixedly connected thereto. When the rear cover 24 is assembled, it abuts against the rear end of the screw 221 to ensure that the screw 221 is always located in the outer cylinder 21.

[0024] In addition, in some embodiments of this application, the adjusting bolt 2 further includes an end-face adjusting ring 25, which is disposed at the front end of the outer cylinder 21 and fixedly connected thereto. Before the fusion reactor blanket 4 is installed, the positions of the base 1 and adjusting bolt 2 and other structures are measured and then compared with the design positions. Based on the deviation values ​​between the two, the end-face adjusting ring 25 is custom-processed to achieve precise positioning of the fusion reactor blanket 4 and the fusion reactor vacuum chamber 3. That is, the setting of the end-face adjusting ring 25 can again adjust the assembly of the fusion reactor vacuum chamber 3 and the fusion reactor blanket 4 to ensure their effective connection.

[0025] In summary, this invention provides an adjustable bolt fastening structure for fusion reactor blanket installation, including a base 1 and an adjusting bolt 2. The base 1 includes a mounting cylinder 11, a mounting nut 15, a flexible support 14, a spherical washer 16, and an end-face fixing ring 17. The mounting nut 15 is fitted inside the mounting cylinder 11 after the flexible support 14 is sleeved over it. The flexible support 14 abuts against the inner wall of the mounting cylinder 11 and the outer wall of the mounting nut 15. The spherical washer 16 and the end-face fixing ring 17 are located within the mounting cylinder. The mounting nut 15 is located inside the mounting cylinder 11 and abuts against the rear end of the mounting nut 15. One end of the mounting nut 15 abuts against the spherical washer 16 has an arc surface. The outer edge of the spherical washer 16 has several spring pieces 161 that abut against the mounting cylinder 11. The end face fixing ring 17 is threadedly connected to the mounting cylinder 11. The adjusting bolt 2 includes an outer cylinder 21 and a bolt assembly 22. The bolt assembly 22 is located inside the outer cylinder 21 and extends out from the front end of the outer cylinder 21. The bolt assembly 22 is inserted into the mounting cylinder 11 and threadedly connected to the mounting nut 15. Compared with the prior art, this application compensates for errors generated during installation by setting a movable mounting nut 15 and spherical washer 16 within the mounting cylinder 11, thereby ensuring an effective connection between the fusion reactor vacuum chamber 3 and the fusion reactor blanket 4.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An adjustable bolt fastening structure for fusion reactor blanket installation, characterized in that, include: A base (1) is located inside and connected to the fusion reactor vacuum chamber (3). The base (1) includes a mounting cylinder (11), a mounting nut (15), a flexible support (14), a spherical washer (16), and an end face fixing ring (17). The mounting nut (15) is fitted inside the mounting cylinder (11) after the flexible support (14) is installed. The flexible support (14) abuts against the inner wall of the mounting cylinder (11) and the outer wall of the mounting nut (15). The spherical washer (16) and the end face fixing ring (17) are disposed inside the mounting cylinder (11) and abut against the mounting nut (15). The mounting nut (15) has an arc surface on the side abutting against the spherical washer (16). The outer edge of the spherical washer (16) is provided with several spring pieces (161) abutting against the mounting cylinder (11). The end face fixing ring (17) is threadedly connected to the mounting cylinder (11). An adjusting bolt (2) is located in and connected to the fusion reactor envelope (4). The adjusting bolt (2) includes an outer cylinder (21) and a bolt assembly (22). The bolt assembly (22) is located in the outer cylinder (21) and extends out from the front end of the outer cylinder (21). The bolt assembly (22) is inserted into the mounting cylinder (11) and threadedly connected to the mounting nut (15). The bolt assembly (22) includes a screw (221), a positioning rod (222), and an adjusting spring (223). The screw (221) is located inside the outer cylinder (21) and extends out of the outer cylinder (21) from the front end of the outer cylinder (21). The positioning rod (222) and the adjusting spring (223) are located inside the screw (221). The front end of the positioning rod (222) passes through the front end of the positioning rod (222) and extends to the outside of the screw (221). The rear end of the screw (221) is provided with a fixing plug (224) fixedly connected thereto. The two ends of the adjusting spring (223) abut against the rear end of the positioning rod (222) and the fixing plug (224), respectively.

2. The adjustable bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The base (1) also includes a stop ring (12), which is located inside the mounting cylinder (11) and abuts against the side of the mounting nut (15) away from the spherical washer (16). The stop ring (12) is provided with a positioning block (121), and the mounting nut (15) is provided with a positioning groove (151) that matches the positioning block (121).

3. The adjustable bolt fastening structure for fusion reactor blanket installation according to claim 2, characterized in that, The base (1) also includes a limiting ring (13), which is located between the stop ring (12) and the mounting nut (15) and abuts against them.

4. The adjustable bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The flexible support (14) is a U-shaped ring. The inner ring (141) of the flexible support (14) is sleeved on the mounting nut (15). The outer ring (142) of the flexible support (14) abuts against the mounting cylinder (11). The outer ring (142) of the flexible support (14) is also provided with several support grooves (143).

5. The adjustable bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The adjusting bolt (2) also includes a support ring (23), which is sleeved on the bolt assembly (22) and abuts against the inner wall of the outer cylinder (21).

6. The adjustable bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The adjusting bolt (2) also includes a rear cover (24), which is located at the rear end of the outer cylinder (21) and fixedly connected thereto. The rear cover (24) abuts against the rear end of the screw (221).

7. The adjustable bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The adjusting bolt (2) also includes an end face adjusting ring (25), which is located at the front end of the outer cylinder (21) and fixedly connected thereto.

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