A tie rod fastening structure for fusion reactor blanket mounting

Abstract

The application relates to the technical field of fusion devices, and discloses a pull rod fastening structure for fusion reactor cladding installation, which comprises a base, a connecting cylinder, a pull rod, an inner cylinder and an outer cylinder, the base is fixedly connected with the connecting cylinder, the pull rod is arranged in an assembly groove of the connecting cylinder and is fixedly connected with the connecting cylinder, the inner cylinder is sleeved outside the pull rod and is connected with the pull rod, the outer cylinder is sleeved outside the inner cylinder and is screwedly connected with the inner cylinder, and a connecting thread is further arranged on the outer surface of the outer cylinder. Compared with the prior art, the application is characterized in that the pull rod and the connecting cylinder are intermittently screwedly connected, the connection form is simplified, the pull rod is fastened by the inner cylinder and the outer cylinder, the effective connection between the cladding of the fusion device and the vacuum chamber is guaranteed, it is to be explained that the eccentric arrangement of the spherical gasket provides the pull rod with angle adjustment within a certain range to form more reasonable cooperation, the whole device is compact in structure, high in system integration degree, and stable and reliable in operation.

Description

Technical Field

[0001] This invention relates to the field of fusion device technology, and in particular to a tie rod 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 weight of a single cladding layer exceeds three tons, requiring installation and fixation to the inner wall of the vacuum chamber via a connecting structure. However, deformation during the manufacturing process of the vacuum chamber and cladding layer can cause processing errors, leading to deviations in the intended installation positions of the cladding layer and the vacuum chamber. Therefore, a simple, effective, and easily adjustable connecting structure is needed to ensure the effective installation of the cladding layer and the vacuum chamber. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a tie rod fastening structure for fusion reactor blanket installation to improve the connection between the fusion reactor blanket and the fusion reactor vacuum chamber.

[0005] Based on this, the present invention provides a tie rod fastening structure for fusion reactor blanket installation, comprising:

[0006] A cylindrical base is disposed in and welded to the vacuum chamber, and the base is provided with a connecting groove.

[0007] A connecting cylinder is disposed in the connecting groove and fixedly connected to the base. The connecting cylinder has an assembly groove, and the inner wall of the assembly groove has intermittent threads.

[0008] A pull rod is inserted into the assembly groove and threadedly connected to the connecting cylinder. The pull rod includes a main rod and a limiting rod. The end of the main rod away from the limiting rod is provided with an intermittent thread that matches the assembly groove. The diameter of the limiting rod is larger than the diameter of the main rod.

[0009] An inner cylinder is fitted over the pull rod and connected to the pull rod. The inner diameter of the inner cylinder is not less than the diameter of the limiting rod. One end of the inner cylinder is provided with a limiting ring that can abut against the upper limiting rod. The main rod extends through the limiting ring to the outside of the inner cylinder.

[0010] An outer cylinder is fitted over the inner cylinder and threadedly connected to the inner cylinder; the outer cylinder is provided with connecting threads.

[0011] The main body rod is fitted with a spherical washer, which, together with the limiting rod, abuts against the inner cylinder.

[0012] In some embodiments of this application, multiple spherical washers are provided, and each spherical washer is sequentially passed through the main body rod and located between the limiting rod and the limiting ring.

[0013] In some embodiments of this application, the surface of the connecting cylinder is provided with a threaded hole, and a connecting bolt is inserted into the threaded hole. The connecting cylinder and the base are fixedly connected by the connecting bolt.

[0014] In some embodiments of this application, the other end of the inner cylinder is provided with an end cap, which is welded to the inner cylinder.

[0015] In some embodiments of this application, the end cap has a first adjustment hole in the middle for a screwdriver to pass through.

[0016] In some embodiments of this application, one end of the outer cylinder is provided with a tail cap, and the tail cap is welded to the outer cylinder.

[0017] In some embodiments of this application, a second adjustment hole is provided in the middle of the tail cap for a screwdriver to pass through.

[0018] In some embodiments of this application, the outer cylinder is provided with a mounting ring for abutting against the tail cap.

[0019] The tie rod fastening structure for fusion reactor blanket installation provided in this embodiment of the invention has the following advantages compared with the prior art:

[0020] This invention provides a tie rod fastening structure for fusion reactor blanket installation, including a base, a connecting cylinder, a tie rod, an inner cylinder, and an outer cylinder. The base is cylindrical and welded to a vacuum chamber, with a connecting groove on it. The connecting cylinder is located within the connecting groove and fixedly connected to the base, and has an assembly groove with intermittent threads on its inner wall. The tie rod passes through the assembly groove and is threadedly connected to the connecting cylinder. The tie rod includes a main rod and a limiting rod. The end of the main rod away from the limiting rod has intermittent threads that match the assembly groove. The diameter of the limiting rod is larger than that of the main rod. A spherical washer is fitted on the main rod, which can cooperate with the limiting rod to abut against the inner cylinder. The inner cylinder is fitted outside the tie rod and connected to it. The inner diameter of the inner cylinder is not smaller than that of the limiting rod. One end of the inner cylinder has a limiting ring that can abut against the limiting rod. The main rod extends through the limiting ring to the outside of the inner cylinder. The outer cylinder is fitted outside the inner cylinder and threadedly connected to it, with connecting threads also provided on its outer surface. Based on the above structure, in use, the base and connecting cylinder are welded to the vacuum chamber of the fusion device. Then, a tie rod is installed, and an inner cylinder and an outer cylinder are sequentially installed outside the tie rod. The inner and outer cylinders are threaded together. The main body of the tie rod passes through the limiting ring at the front end of the inner cylinder and then into the assembly groove of the connecting cylinder. The limiting rod abuts against a spherical washer, causing it to abut against the limiting ring of the inner cylinder. Rotating the tie rod causes it to threadedly connect with the connecting cylinder. Finally, rotating the inner and outer cylinders brings them to their designated positions. Thus, this application simplifies the connection method through the intermittent threaded connection between the tie rod and the connecting cylinder, and ensures an effective connection between the fusion device's blanket and the vacuum chamber by securing the tie rod with the inner and outer cylinders. Attached Figure Description

[0021] Figure 1 These are schematic diagrams of the connection structures according to some embodiments of the present invention;

[0022] Figure 2 This is an internal schematic diagram of the connection structure in some embodiments of the present invention;

[0023] Figure 3 This is an exploded view of the connection structure of some embodiments of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly of the base and the connecting cylinder according to some embodiments of the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly of the tie rod, inner cylinder, and outer cylinder according to some embodiments of the present invention;

[0026] Figure 6 Exploded views of the tie rod, inner cylinder, and outer cylinder according to some embodiments of the present invention;

[0027] Figure 7 This is a schematic diagram of the inner cylinder structure according to some embodiments of the present invention;

[0028] Figure 8 This is a schematic diagram of the outer cylinder structure of some embodiments of the present invention.

[0029] In the diagram, 1 is the base; 11 is the connecting groove; 2 is the connecting cylinder; 21 is the assembly groove; 22 is the threaded hole; 3 is the tie rod; 31 is the main rod; 32 is the limiting rod; 4 is the spherical washer; 5 is the inner cylinder; 51 is the limiting ring; 6 is the outer cylinder; 61 is the mounting ring; 7 is the end cap; 71 is the first adjusting hole; 8 is the tail cap; and 81 is the second adjusting hole. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] like Figures 1 to 8 As shown, this invention provides a tie rod fastening structure for fusion reactor blanket installation, including a base 1, a connecting cylinder 2, a tie rod 3, an inner cylinder 5, and an outer cylinder 6. The base 1 is cylindrical and is disposed in a vacuum chamber and welded to it. A connecting groove 11 is provided on the base 1. The connecting cylinder 2 is disposed in the connecting groove 11 and fixedly connected to the base 1. In this embodiment, the connecting cylinder 2 is welded to the base 1. Furthermore, the connecting cylinder 2 has an assembly groove 21, and the inner wall of the assembly groove 21 has intermittent threads. Corresponding to the connecting cylinder 2, the tie rod 3 of this application passes through the assembly groove 21 and is threadedly connected to the connecting cylinder 2. Specifically, the tie rod 3 includes a main rod 3. 1. The main body rod 31 has a limit rod 32. The end of the main body rod 31 away from the limit rod 32 is provided with an intermittent thread that matches the assembly groove 21. The diameter of the limit rod 32 is larger than the diameter of the main body rod 31. A spherical washer 4 is fitted on the main body rod 31, which can cooperate with the limit rod 32 to abut against the inner cylinder 5. Furthermore, the inner cylinder 5 is fitted outside the pull rod 3 and connected to the pull rod 3. The inner diameter of the inner cylinder 5 is not less than the diameter of the limit rod 32. One end of the inner cylinder 5 is provided with a limit ring 51 that can abut against the limit rod 32. The main body rod 31 extends through the limit ring 51 to the outside of the inner cylinder 5. The outer cylinder 6 is fitted outside the inner cylinder 5 and threadedly connected to the inner cylinder 5. The outer surface of the outer cylinder 6 is also provided with a connecting thread.

[0033] Based on the above structure, in use, the base 1 and the connecting cylinder 2 are welded to the vacuum chamber of the fusion device. Then, a tie rod 3 is installed, and an inner cylinder 5 and an outer cylinder 6 are sequentially installed outside the tie rod 3. The inner cylinder 5 and the outer cylinder 6 are threaded together. The main rod 31 of the tie rod 3 passes through the limiting ring 51 at the front end of the inner cylinder 5 and then passes into the assembly groove 21 of the connecting cylinder 2. The limiting rod 32 of the tie rod 3 abuts against the spherical washer 4 so that it abuts against the limiting ring 51 of the inner cylinder 5. The tie rod 3 is rotated to make it threadedly connected to the connecting cylinder 2. Finally, the inner cylinder 5 and the outer cylinder 6 are rotated to reach the designated position. Thus, this application simplifies the connection method through the intermittent threaded connection between the tie rod 3 and the connecting cylinder 2, and ensures an effective connection between the blanket of the fusion device and the vacuum chamber by fastening the tie rod 3 with the inner cylinder 5 and the outer cylinder 6.

[0034] Optionally, in some embodiments of this application, multiple spherical washers 4 may be provided, in which case each spherical washer 4 is sleeved on the main body rod 31 and located between the limiting rod 32 and the limiting ring 51.

[0035] Furthermore, in some embodiments of this application, the thickness of the spherical washer 4 gradually increases. At this time, the spherical washer 4 is eccentrically set with the main body rod 31, and the main body rod 31 can be tilted under the influence of the spherical washer 4, thereby realizing the angle adjustment of the pull rod 3 within a certain range, forming a more reasonable fit. The whole device has a compact structure, high system integration, and stable and reliable operation.

[0036] Optionally, in some embodiments of this application, the surface of the connecting cylinder 2 is provided with threaded holes 22, and connecting bolts are inserted into the threaded holes 22, that is, the connecting cylinder 2 and the base 1 are fixedly connected by connecting bolts. Obviously, in order to improve the connection effect, multiple threaded holes 22 can be provided on the surface of the connecting cylinder 2, and each threaded hole 22 is provided with a connecting bolt. The connecting cylinder 2 and the base 1 are fixedly connected as a whole by a number of connecting bolts. Of course, the connecting cylinder 2 can also be welded to the base 1 or fixedly connected by other methods, which will not be elaborated here.

[0037] Furthermore, in some embodiments of this application, the other end of the inner cylinder 5 is provided with an end cap 7, which is welded to the inner cylinder 5 to ensure that the pull rod 3 can be stably installed in the inner cylinder 5. Even further, a first adjustment hole 71 is provided in the middle of the end cap 7, through which a screwdriver can pass to directly act on the pull rod 3 to adjust it.

[0038] Similar to the end cap 7, in some embodiments of this application, one end of the outer cylinder 6 is provided with a tail cap 8, which is welded to the outer cylinder 6. Similarly, a second adjustment hole 81 is provided in the middle of the tail cap 8, through which a screwdriver can pass directly to the pull rod 3 via the second adjustment hole 81 and the first adjustment hole 71 to adjust the pull rod 3.

[0039] In addition, in order to achieve quick assembly of the tail cap 8 and the outer cylinder 6, the outer cylinder 6 is provided with a mounting ring 61 that matches the tail cap 8. When in use, the tail cap 8 is pressed against the mounting ring 61 to achieve its positioning with the outer cylinder 6. At the same time, the operator can also choose to set a connecting bolt on the tail cap 8 and insert it into the mounting ring 61 to achieve effective connection between the tail cap 8 and the outer cylinder 6. The connection method between the tail cap 8 and the outer cylinder 6 will not be described in detail here.

[0040] In summary, this invention provides a tie rod fastening structure for fusion reactor blanket installation, including a base 1, a connecting cylinder 2, a tie rod 3, an inner cylinder 5, and an outer cylinder 6. The base 1 is cylindrical and disposed within a vacuum chamber and welded thereto. A connecting groove 11 is provided on the base 1. The connecting cylinder 2 is disposed within the connecting groove 11 and fixedly connected to the base 1. In this embodiment, the connecting cylinder 2 is welded to the base 1. Furthermore, the connecting cylinder 2 has an assembly groove 21, the inner wall of which has intermittent threads. Corresponding to the connecting cylinder 2, the tie rod 3 of this application passes through the assembly groove 21 and is threadedly connected to the connecting cylinder 2. Specifically, the tie rod 3 includes a main rod 31 and a limiting rod 32. The main rod 31 is located away from... One end of the limiting rod 32 is provided with an intermittent thread that matches the assembly groove 21. The diameter of the limiting rod 32 is larger than the diameter of the main rod 31. A spherical washer 4 is fitted on the main rod 31, which can cooperate with the limiting rod 32 to abut against the inner cylinder 5. Obviously, when the spherical washer 4 is eccentrically set, the spherical washer 4 can assist the main rod 31 to be tilted. Furthermore, the inner cylinder 5 is fitted outside the pull rod 3 and connected to the pull rod 3. The inner diameter of the inner cylinder 5 is not less than the diameter of the limiting rod 32. One end of the inner cylinder 5 is provided with a limiting ring 51 that can abut against the limiting rod 32. The main rod 31 extends through the limiting ring 51 to the outside of the inner cylinder 5. The outer cylinder 6 is fitted outside the inner cylinder 5 and threadedly connected to the inner cylinder 5. The outer surface of the outer cylinder 6 is also provided with connecting threads. Compared with the prior art, this application simplifies the connection form by using the intermittent threaded connection between the tie rod 3 and the connecting cylinder 2. The tie rod 3 is fastened by the inner cylinder 5 and the outer cylinder 6, which ensures the effective connection between the fusion device's envelope and the vacuum chamber. It should be noted that the eccentric setting of the spherical washer 4 provides the tie rod 3 with an angle adjustment within a certain range to form a more reasonable fit. The whole 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 tie rod fastening structure for mounting the blanket of a fusion reactor, characterized in that, include: The base (1) is cylindrical and is installed in the vacuum chamber and welded to it. The base (1) has a connecting groove (11). A connecting cylinder (2) is disposed in the connecting groove (11) and fixedly connected to the base (1). The connecting cylinder (2) has an assembly groove (21) and the inner wall of the assembly groove (21) has intermittent threads. A pull rod (3) is inserted into the assembly groove (21) and threadedly connected to the connecting cylinder (2). The pull rod (3) includes a main rod (31) and a limiting rod (32). The end of the main rod (31) away from the limiting rod (32) is provided with an intermittent thread that matches the assembly groove (21). The diameter of the limiting rod (32) is larger than the diameter of the main rod (31). The inner cylinder (5) is sleeved outside the pull rod (3) and connected to the pull rod (3). The inner diameter of the inner cylinder (5) is not less than the diameter of the limiting rod (32). One end of the inner cylinder (5) is provided with a limiting ring (51) that can abut against the limiting rod (32). The main rod (31) extends through the limiting ring (51) to the outside of the inner cylinder (5). The outer cylinder (6) is sleeved outside the inner cylinder (5) and threadedly connected to the inner cylinder (5). The outer cylinder (6) is provided with connecting threads. Among them, a spherical washer (4) is sleeved on the main rod (31), and the spherical washer (4) cooperates with the limiting rod (32) to abut against the inner cylinder (5). The other end of the inner cylinder (5) is provided with an end cap (7), which is welded to the inner cylinder (5). The end cap (7) has a first adjustment hole (71) in the middle for a screwdriver to pass through. One end of the outer cylinder (6) is provided with a tail cap (8), which is welded to the outer cylinder (6). A second adjustment hole (81) for a screwdriver to pass through is provided in the middle of the tail cap (8).

2. The tie rod fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The spherical washer (4) is provided in multiples, and each spherical washer (4) is sequentially inserted on the main body rod (31) and located between the limiting rod (32) and the limiting ring (51).

3. The tie rod fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The surface of the connecting cylinder (2) is provided with a threaded hole (22), and a connecting bolt is inserted into the threaded hole (22). The connecting cylinder (2) and the base (1) are fixedly connected by the connecting bolt.

4. The tie rod fastening structure for fusion reactor blanket installation according to claim 1, characterized in that, The outer cylinder (6) is provided with an mounting ring (61) for abutting against the tail cap (8).

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