A non-concentric bolted fastening structure for fusion reactor blanket mounting

Abstract

The application relates to the technical field of fusion devices, and discloses a non-concentric bolt fastening structure for fusion reactor cladding installation, which comprises a base, an outer cylinder and a connecting bolt, the base is arranged in a fusion reactor vacuum chamber and fixedly connected with the fusion reactor vacuum chamber, one end of the base is provided with a connecting part in a conical shape, a connecting groove is formed in the connecting part, the outer cylinder is arranged in the fusion reactor cladding and fixedly connected with the fusion reactor cladding, one end of the connecting bolt penetrates through the outer cylinder and is inserted into the connecting groove, and the other end of the connecting bolt is provided with a universal joint, the universal joint is arranged in the outer cylinder and connected with the outer cylinder. Compared with the prior art, the universal joint is arranged, so that the connecting bolt can freely rotate at the end after being fixedly connected with the vacuum chamber at the first end, the movable end of the connecting bolt is fixedly connected with the cladding, the movable end of the connecting bolt can compensate for the position deviation of the cladding and the vacuum chamber, the whole device has compact structure, high system integration degree and stable and reliable operation.

Description

Technical Field

[0001] This invention relates to the field of fusion device technology, and in particular to a non-concentric 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 bolted to the inner wall of the vacuum chamber during assembly. 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 a non-concentric 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 a non-concentric bolt fastening structure for fusion reactor blanket installation, comprising:

[0006] A base is located in and fixedly connected to the vacuum chamber of the fusion reactor. One end of the base is provided with a tapered connecting part, and a connecting groove is provided on the connecting part.

[0007] The outer cylinder is located within and fixedly connected to the fusion reactor blanket.

[0008] A connecting bolt is inserted into the connecting groove through the outer cylinder. The other end of the connecting bolt is provided with a universal joint, which is connected to the outer cylinder.

[0009] In some embodiments of this application, the universal joint includes a drive ring, a first swing ring, a connecting rod, a second swing ring, a swing bracket, and a connecting wrench. The drive ring has a first countersunk hole, the first swing ring has a second countersunk hole that matches the first countersunk hole, the first swing ring also has a third countersunk hole, the connecting rod has a fourth countersunk hole that matches the third countersunk hole, the connecting rod also has a fifth countersunk hole, the second swing ring has a sixth countersunk hole that matches the fifth countersunk hole, the second swing ring has a seventh countersunk hole, the swing bracket has an eighth countersunk hole that matches the seventh countersunk hole, the connecting wrench passes through the through hole of the swing bracket, and the other end of the connecting wrench is inserted into and connected to the connecting bolt. Each countersunk hole is provided with a fastener.

[0010] In some embodiments of this application, the fastener includes a fastening bolt, a washer, and a bushing.

[0011] In some embodiments of this application, one end of the outer cylinder is provided with a mating groove that matches the connecting part, and the connecting part is inserted into the mating groove when the connecting bolt is inserted into the connecting groove.

[0012] In some embodiments of this application, the other end of the outer cylinder is provided with a rear cover, which is disposed inside the outer cylinder and threadedly connected thereto.

[0013] In some embodiments of this application, an adjusting ring is provided inside the outer cylinder, and the adjusting ring is sleeved on the connecting bolt and abuts against the inner sidewall of the outer cylinder.

[0014] In some embodiments of this application, the inner wall of the outer cylinder is provided with guide ribs, and the outer wall of the adjusting ring is provided with guide grooves that match the guide ribs.

[0015] In some embodiments of this application, multiple guide ribs are provided, and multiple guide grooves are provided, each corresponding to one of the guide ribs.

[0016] In some embodiments of this application, the end of the base away from the connection portion is provided with a thread, and the base is threadedly connected to the fusion reactor vacuum chamber.

[0017] In some embodiments of this application, the outer cylinder is provided with threads, and the outer cylinder is threadedly connected to the fusion reactor blanket.

[0018] The non-concentric bolt fastening structure for fusion reactor blanket installation provided in this embodiment of the invention has the following advantages compared with the prior art:

[0019] This invention provides a non-concentric bolt fastening structure for fusion reactor blanket installation, comprising a base, an outer cylinder, and connecting bolts. The base is disposed within and fixedly connected to the fusion reactor vacuum chamber. One end of the base has a tapered connecting portion with a connecting groove. The outer cylinder is disposed within and fixedly connected to the fusion reactor blanket. One end of the connecting bolt passes through the outer cylinder and is inserted into the connecting groove, while the other end has a universal joint located within and connected to the outer cylinder. Based on this structure, this application achieves a fixed connection between the vacuum chamber and the blanket through the base, connecting bolts, and outer cylinder. Furthermore, due to the universal joint, after one end of the connecting bolt is engaged in the connecting groove of the connecting portion and fixedly connected to the vacuum chamber, the other end of the connecting bolt can also deflect and displace based on the rotation of the universal joint. At this time, the other end of the connecting bolt connects to the outer cylinder, thereby forming a certain angle between the outer cylinder and the blanket mounting hole, achieving compensation for the positional deviation between the blanket and the vacuum chamber. The entire device has a compact structure, high system integration, and stable and reliable operation. Attached Figure Description

[0020] Figure 1 These are exploded views of the non-concentric bolt fastening structures according to some embodiments of the present invention;

[0021] Figure 2 This is a schematic diagram of the base structure according to some embodiments of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the outer cylinder according to some embodiments of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the connecting bolts in some embodiments of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a universal joint according to some embodiments of the present invention;

[0025] Figure 6 These are exploded views of the universal joint structure according to some embodiments of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the adjusting ring in some embodiments of the present invention;

[0027] Figure 8 This is a schematic diagram of the assembly of the vacuum chamber and cladding in some embodiments of the present invention.

[0028] In the diagram, 1. Base; 11. Connecting part; 12. Connecting groove; 2. Outer cylinder; 3. Connecting bolt; 4. Universal joint; 41. Drive ring; 411. First countersunk hole; 42. First swing ring; 421. Second countersunk hole; 422. Third countersunk hole; 43. Connecting rod; 431. Fourth countersunk hole; 432. Fifth countersunk hole; 44. Second swing ring; 441. Sixth countersunk hole; 442. Seventh countersunk hole; 45. Swing bracket; 451. Eighth countersunk hole; 46. Connecting wrench; 47. Fastener; 471. Fastening bolt; 472. Washer; 473. Liner ring; 5. Adjusting ring; 51. Guide groove; 6. Rear cover; 7. Vacuum chamber; 8. Cladding. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] like Figures 1 to 8 As shown, the present invention provides a non-concentric bolt fastening structure for fusion reactor blanket installation, including a base 1, an outer cylinder 2, and a connecting bolt 3. The base 1 is disposed in and fixedly connected to the fusion reactor vacuum chamber 7. One end of the base 1 is provided with a tapered connecting part 11, and a connecting groove 12 is provided on the connecting part 11. The outer cylinder 2 is disposed in and fixedly connected to the fusion reactor blanket 8. One end of the connecting bolt 3 passes through the outer cylinder 2 and is inserted into the connecting groove 12, and the other end is provided with a universal joint 4. The universal joint 4 is disposed in the outer cylinder 2 and connected to the outer cylinder 2.

[0032] Based on the above structure, this application achieves a fixed connection between the vacuum chamber 7 and the cladding 8 through the base 1, connecting bolts 3, and outer cylinder 2. Furthermore, due to the setting of the universal joint 4, after one end of the connecting bolt 3 is inserted into the connecting groove 12 of the connecting part 11 and fixedly connected to the vacuum chamber 7, the other end of the connecting bolt 3 can also deflect and displace based on the rotation of the universal joint 4. At this time, the other end of the connecting bolt 3 is connected to the outer cylinder 2, thereby making the outer cylinder 2 and the mounting hole of the cladding 8 form a certain angle, realizing the compensation for the positional deviation between the cladding 8 and the vacuum chamber 7. The whole device has a compact structure, high system integration, and stable and reliable operation.

[0033] Furthermore, the universal joint 4 of this application includes a drive ring 41, a first swing ring 42, a connecting rod 43, a second swing ring 44, a swing bracket 45, and a connecting wrench 46. The drive ring 41 has a pair of first countersunk holes 411, the first swing ring 42 has a second countersunk hole 421 matching the first countersunk hole 411, the first swing ring 42 also has a pair of third countersunk holes 422, the connecting rod 43 has a fourth countersunk hole 431 matching the third countersunk hole 422, and the connecting rod 43 also has a pair of fifth countersunk holes 432. The second swing ring 44 is provided with a sixth countersunk hole 441 that matches the fifth countersunk hole 432. The second swing ring 44 is provided with a pair of seventh countersunk holes 442. The swing bracket 45 is provided with an eighth countersunk hole 451 that matches the seventh countersunk hole 442. The connecting wrench 46 is inserted into the through hole of the swing bracket 45. The other end of the connecting wrench 46 is inserted into the connecting bolt 3 and connected to it. Each countersunk hole is provided with a fastener 47 that connects to the corresponding structure. Specifically, in the embodiment of the present invention, the fastener 47 includes a fastening bolt 471, a washer 472 and a bushing 473.

[0034] Based on the above structure, in use, the first countersunk hole 411 corresponds to the second countersunk hole 421, the third countersunk hole 422 corresponds to the fourth countersunk hole 431, the fifth countersunk hole 432 corresponds to the sixth countersunk hole 441, the seventh countersunk hole 442 corresponds to the eighth countersunk hole 451. Each set of countersunk holes is provided with a fastening bolt 471 to achieve effective connection of the corresponding components. At the same time, a washer 472 and a bushing 473 are fitted on the fastening bolt 471 to ensure the normal rotation of the first swing ring 42, the connecting rod 43, the second swing ring 44, and the swing bracket 45.

[0035] Optionally, in some embodiments of this application, an adjusting ring 5 is provided inside the outer cylinder 2. The adjusting ring 5 is sleeved on the connecting bolt 3 and abuts against the inner wall of the outer cylinder 2. Based on the above structure, the adjusting ring 5 abuts against both the outer cylinder 2 and the connecting bolt 3, which can effectively improve the connection effect between the connecting bolt 3 and the outer cylinder 2, thereby preventing large-scale displacement of the connecting bolt 3 in the outer cylinder 2. Furthermore, the inner wall of the adjusting ring 5 is tapered, and the connecting bolt 3 can be tilted based on the tapered surface of the inner wall of the adjusting ring, thereby forming a certain angle with the fixing hole of the cladding 8, realizing compensation for the positional deviation between the cladding 8 and the vacuum chamber 7.

[0036] Furthermore, in some embodiments of this application, the inner wall of the outer cylinder 2 is provided with guide ribs, and the outer wall of the adjusting ring 5 is provided with guide grooves 51 that match the guide ribs. Based on the above structure, the adjusting ring 5 and the outer cylinder 2 are fixedly connected by the guide ribs and guide grooves 51, thereby preventing the adjusting ring 5 from changing with the offset of the connecting bolt 3, thus ensuring the adjusting effect of the adjusting ring 5 on the connecting bolt 3. Furthermore, this application has multiple guide ribs, and correspondingly multiple guide grooves 51 are provided, each corresponding to one of the guide ribs. Specifically, in the embodiments of this invention, there are four guide ribs and four guide grooves 51, and the four guide grooves 51 are evenly arranged along the circumference of the adjusting ring 5.

[0037] Optionally, in some embodiments of this application, one end of the outer cylinder 2 is provided with a mating groove that matches the connecting part 11. When the connecting bolt 3 is inserted into the connecting groove 12, the connecting part 11 is inserted into the mating groove and abuts against the outer cylinder 2.

[0038] Furthermore, the other end of the outer cylinder 2 is provided with a rear cover 6, which is located inside the outer cylinder 2 and threadedly connected to it. Based on the above structure, the rear cover 6 can seal the outer cylinder 2, thereby preventing the connecting bolts 3 and universal joints 4 from being exposed.

[0039] Furthermore, in this embodiment of the invention, the base 1 has a thread at the end away from the connecting part 11, meaning that the base 1 is threadedly connected to the fusion reactor vacuum chamber 7. Similarly, in this embodiment of the invention, the outer wall of the outer cylinder 2 has a thread, meaning that the outer cylinder 2 is also threadedly connected to the fusion reactor blanket 8.

[0040] In summary, this invention provides a non-concentric bolt fastening structure for fusion reactor blanket installation, comprising a base 1, an outer cylinder 2, and connecting bolts 3. The base 1 is disposed within and fixedly connected to the fusion reactor vacuum chamber 7. One end of the base 1 has a tapered connecting portion 11 with a connecting groove 12. The outer cylinder 2 is disposed within and fixedly connected to the fusion reactor blanket 8. One end of the connecting bolt 3 passes through the outer cylinder 2 and is inserted into the connecting groove 12, while the other end has a universal joint 4 disposed within and connected to the outer cylinder 2. Compared with the prior art, this application, by providing a universal joint 4, allows the connecting bolt 3 to rotate freely at its end after being fixedly connected to the vacuum chamber 7 at its first end. The movable end of the connecting bolt 3 is fixedly connected to the blanket 8, and the movable end of the connecting bolt 3 can compensate for positional deviations between the blanket 8 and the vacuum chamber 7. The entire device has a compact structure, high system integration, and stable and reliable operation.

[0041] 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. A non-concentric bolt fastening structure for fusion reactor blanket installation, characterized in that, include: The base (1) is located inside the fusion reactor vacuum chamber (7) and fixedly connected thereto. One end of the base (1) is provided with a tapered connecting part (11), and a connecting groove (12) is provided on the connecting part (11). The outer cylinder (2) is located in the fusion reactor blanket (8) and is fixedly connected to it; A connecting bolt (3) is provided, one end of which passes through the outer cylinder (2) and is inserted into the connecting groove (12). The other end of the connecting bolt (3) is provided with a universal joint (4), which is located inside the outer cylinder (2) and connected to the outer cylinder (2). The universal joint (4) includes a drive ring (41), a first swing ring (42), a connecting rod (43), a second swing ring (44), a swing bracket (45), and a connecting wrench (46). The drive ring (41) has a first countersunk hole (411), the first swing ring (42) has a second countersunk hole (421) that matches the first countersunk hole (411), the first swing ring (42) also has a third countersunk hole (422), and the connecting rod (43) has a fourth countersunk hole (431) that matches the third countersunk hole (422). The second swing ring (44) is provided with a fifth countersunk hole (432), a sixth countersunk hole (441) that matches the fifth countersunk hole (432), a seventh countersunk hole (442) that matches the seventh countersunk hole (442), an eighth countersunk hole (451) that matches the seventh countersunk hole (442), a connecting wrench (46) that passes through the through hole of the swing bracket (45), and the other end of the connecting wrench (46) that is inserted into the connecting bolt (3) and connected to it. Each countersunk hole is provided with a fastener (47).

2. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The fastener (47) includes a fastening bolt (471), a washer (472), and a bushing (473).

3. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, One end of the outer cylinder (2) is provided with a mating groove that matches the connecting part (11). When the connecting bolt (3) is inserted into the connecting groove (12), the connecting part (11) is inserted into the mating groove.

4. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 3, characterized in that, The other end of the outer cylinder (2) is provided with a rear cover (6), which is located inside the outer cylinder (2) and is threadedly connected to it.

5. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The outer cylinder (2) is provided with an adjusting ring (5), which is sleeved on the connecting bolt (3) and abuts against the inner wall of the outer cylinder (2).

6. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 5, characterized in that, The inner wall of the outer cylinder (2) is provided with guide ribs, and the outer wall of the adjusting ring (5) is provided with guide grooves (51) that match the guide ribs.

7. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 6, characterized in that, The guide ribs are provided in multiple ways, and the guide grooves (51) are provided in multiple ways and correspond one-to-one with the guide ribs.

8. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The base (1) has a thread at one end away from the connecting part (11), and the base (1) is threadedly connected to the fusion reactor vacuum chamber (7).

9. The non-concentric bolt fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The outer cylinder (2) is threaded and is threaded to the fusion reactor envelope (8).

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