Scrapers and neutral beam injection systems

Abstract

The application discloses a scraper and a neutral beam injection system, and relates to the technical field of scrapers. The scraper comprises a mounting frame and a heat exchange plate assembly. The mounting frame defines an assembly space, and both ends of the assembly space are open along a first direction. The heat exchange plate assembly comprises a plurality of heat exchange plates. Each heat exchange plate extends along the first direction, and at least part of each heat exchange plate is assembled in the assembly space. The plurality of heat exchange plates are arranged in sequence around the first direction, so that the heat exchange plate assembly defines a beam channel extending along the first direction. The heat exchange plate is floatingly arranged in the mounting frame along the arrangement direction of the heat exchange plate and the beam channel. According to the scraper, the probability of stress concentration at the connection between the heat exchange plate and the mounting frame when the heat exchange plate is deformed by heat can be reduced, the connection strength of the heat exchange plate and the mounting frame can be improved, the probability of deformation of the mounting frame can be reduced, and the service life of the scraper can be prolonged.

Description

Technical Field

[0001] This invention relates to the field of beam scraper technology, and in particular to a beam scraper and a neutral beam injection system having the beam scraper. Background Technology

[0002] In related technologies, under high heat load conditions, the heat exchange plate of the existing neutral beam injection system is deformed by heat. Repeated deformation of the heat exchange plate can easily lead to cracking and damage at the connection between the heat exchange plate and the mounting frame, affecting the service life of the scraper. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a scraper that helps reduce the probability of stress concentration at the connection between the heat exchange plate and the mounting frame when the heat exchange plate deforms due to heat, helps improve the connection strength between the heat exchange plate and the mounting frame, helps reduce the probability of deformation of the mounting frame, and helps extend the service life of the scraper.

[0004] The present invention also proposes a neutral beam injection system using the above-described beam scraper.

[0005] According to a first aspect of the present invention, a beam scraper includes: a mounting frame and a heat exchange plate assembly, the mounting frame defining an assembly space and being open at both ends along a first direction, the heat exchange plate assembly including a plurality of heat exchange plates extending along the first direction, at least a portion of each heat exchange plate being assembled within the assembly space, and the plurality of heat exchange plates being arranged sequentially around the first direction such that the heat exchange plate assembly defines a beam channel extending along the first direction, the heat exchange plates being buoyantly disposed on the mounting frame along their own and the arrangement direction of the beam channel.

[0006] According to the scraper of this application embodiment, when the heat exchange plate deforms due to heat, the heat exchange plate can be subjected to thermal expansion stress along its own arrangement direction and the beam channel arrangement direction. The heat exchange plate is buoyantly mounted on the mounting frame along its own arrangement direction and the beam channel arrangement direction. After being subjected to force, the heat exchange plate can float relative to the mounting frame along its own arrangement direction and the beam channel arrangement direction. This is beneficial to achieving the effect of releasing thermal expansion stress, reducing the probability of stress concentration at the connection between the heat exchange plate and the mounting frame when the heat exchange plate deforms due to heat, improving the connection strength between the heat exchange plate and the mounting frame, reducing the probability of deformation of the mounting frame, extending the service life of the heat exchange plate and the mounting frame, and extending the service life of the scraper.

[0007] According to some embodiments of the present invention, the heat exchange plate includes: a heat exchange plate body and a floating connection structure, the floating connection structure being disposed on the heat exchange plate body and located on the side of the heat exchange plate body facing the mounting frame, the floating connection structure being fitted and assembled with the mounting frame so that the heat exchange plate is floatingly disposed on the mounting frame.

[0008] According to some embodiments of the present invention, the floating connection structure includes: a mounting base, a connecting rod, and an elastic element. The mounting base is fixed to the heat exchange plate body and has a limiting wall. Along the arrangement direction of the heat exchange plate body and the floating connection structure, the limiting wall and the heat exchange plate body are spaced apart. The connecting rod passes through the limiting wall and the mounting frame along the arrangement direction of the heat exchange plate body and the floating connection structure. The end of the connecting rod facing the heat exchange plate body has a limiting block that abuts against the limiting wall. The elastic element is sleeved on the connecting rod and is configured to be compressed between the mounting frame and the limiting wall.

[0009] According to some embodiments of the present invention, the floating connection structure further includes: a first limiting ring, the first limiting ring being located on the side of the mounting frame away from the heat exchange plate body, the first limiting ring being fixed to the connecting rod and contacting and limiting the mounting frame.

[0010] According to some embodiments of the present invention, the floating connection structure further includes: a second limiting ring, the second limiting ring being fixed to the connecting rod and located between the mounting frame and the elastic member, the second limiting ring abutting against both the mounting frame and the elastic member.

[0011] According to some embodiments of the present invention, the second limiting ring includes two sub-limiting rings, which are arranged sequentially at intervals along the length direction of the connecting rod, and the two sub-limiting rings respectively abut against the mounting frame and the elastic element.

[0012] According to some embodiments of the present invention, the heat exchange plate includes a plurality of floating connection structures, and the plurality of floating connection structures are arranged sequentially along the first direction.

[0013] According to some embodiments of the present invention, a heat exchange channel for supplying heat exchange medium is formed in the heat exchange plate, and the heat exchange channel is bent along the arrangement direction of the heat exchange plate and the beam channel.

[0014] According to some embodiments of the present invention, the heat exchange plate has a first plate wall and a second plate wall, the first plate wall and the second plate wall are opposite to and spaced apart along the respective arrangement direction of the heat exchange plate and the beam channel, a plurality of first tooth structures are formed on the side of the first plate wall facing the second plate wall, the plurality of first tooth structures are arranged sequentially at intervals along the first direction, a plurality of second tooth structures are formed on the side of the second plate wall facing the first plate wall, the plurality of second tooth structures are arranged sequentially at intervals along the first direction, and a second tooth structure extends between any two adjacent first tooth structures to form the heat exchange channel in the heat exchange plate.

[0015] A neutral beam injection system according to a second aspect of the present invention includes the beam scraper described in the above embodiments.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a cross-sectional view of a neutral beam injection system according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of a scraper according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of a heat exchanger plate assembly according to an embodiment of this application;

[0021] Figure 4 This is a cross-sectional view of a heat exchanger plate assembly according to an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the mounting base according to an embodiment of this application.

[0023] Figure label:

[0024] Neutral beam injection system 1,

[0025] Scraper 100,

[0026] Mounting frame 10, assembly space 11, weight reduction hole 12

[0027] Heat exchanger plate assembly 20, heat exchanger plate 21, heat exchanger plate body 211, floating connection structure 212, mounting base 2121, limiting wall 21211, connecting wall 21212, first assembly hole 21213, connecting rod 2122, limiting block 21221, elastic element 2123, first limiting ring 2124, second limiting ring 2125, first sub-limiting ring 21251, second sub-limiting ring 21252, gasket 2126, heat exchange flow channel 213, first plate wall 214, first toothed structure 2141, second plate wall 215, second toothed structure 2151, liquid inlet 216, liquid outlet 217, flow channel 22, first connecting structure 23, second connecting structure 24, connecting hose 25.

[0028] Inlet pipe 31, outlet pipe 32,

[0029] Ion source 200, deflecting magnet 300, ion swallower 400. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following is for reference. Figures 1-5 A beam scraper 100 according to an embodiment of the present invention is described. The beam scraper 100 can be applied to a neutral beam injection system 1.

[0032] According to the first aspect of the present invention, the scraper 100, such as Figures 1-5 As shown, the beam scraper 100 may include: a mounting frame 10 and a heat exchange plate assembly 20. The mounting frame 10 defines an assembly space 11, and both ends of the assembly space 11 are open along a first direction. The heat exchange plate assembly 20 includes a plurality of heat exchange plates 21, all of which extend along the first direction. At least a portion of each heat exchange plate 21 is assembled within the assembly space 11. The plurality of heat exchange plates 21 are arranged sequentially around the first direction so that the heat exchange plate assembly 20 defines a beam channel 22 extending along the first direction. The heat exchange plates 21 are buoyantly disposed on the mounting frame 10 along their own and the arrangement direction of the beam channel 22.

[0033] It should be noted that under high heat load conditions, the heat exchange plate of the existing neutral beam injection system's scraper is deformed by heat. Repeated deformation of the heat exchange plate can easily lead to cracking or damage at the connection between the heat exchange plate and the mounting frame, thus affecting the service life of the scraper.

[0034] Based on this, this application provides a scraper 100, in which a mounting frame 10 defines an assembly space 11, and at least a portion of a heat exchange plate assembly 20 can be assembled within the assembly space 11 so that the heat exchange plate assembly 20 can be connected to the mounting frame 10. Along a first direction, both ends of the assembly space 11 can be open, allowing the scraper 100 to be used as described above. Figure 2 When setting the direction, the first direction is Figure 2 The heat exchanger assembly 20 may include multiple heat exchangers 21, each extending along a first direction and connected to the mounting frame 10 via welding, screwing, or other methods. At least a portion of each heat exchanger 21 may be assembled within the assembly space 11; either a portion of the structure of each heat exchanger 21 may be assembled within the assembly space 11, or the entire structure of each heat exchanger 21 may be assembled within the assembly space 11. This embodiment illustrates the example of a portion of the structure of each heat exchanger 21 being assembled within the assembly space 11.

[0035] Multiple heat exchange plates 21 can be arranged sequentially around the first direction. Any two adjacent heat exchange plates 21 can contact each other. Multiple heat exchange plates 21 can jointly define a beam channel 22 extending along the first direction. The high-energy neutral particle beam in the neutral beam injection system 1 can enter the beam channel 22 and impact the inner wall of the beam channel 22. The kinetic energy of the high-energy neutral particles can be converted into heat energy, thereby putting the beam scraper 100 under a high heat load condition. At this time, the multiple heat exchange plates 21 are deformed by heat. When the heat exchange plate 21 deforms due to heat, it can be subjected to thermal expansion stress along its own arrangement direction and that of the beam channel 22. The heat exchange plate 21 is floatingly mounted on the mounting frame 10 along its own arrangement direction and that of the beam channel 22. After being subjected to force, the heat exchange plate 21 can float relative to the mounting frame 10 along its own arrangement direction and that of the beam channel 22. This helps to release thermal expansion stress, reduces the probability of stress concentration at the connection between the heat exchange plate 21 and the mounting frame 10 when the heat exchange plate 21 deforms due to heat, improves the connection strength between the heat exchange plate 21 and the mounting frame 10, reduces the probability of deformation of the mounting frame 10, extends the service life of the heat exchange plate 21 and the mounting frame 10, and extends the service life of the beam scraper 100.

[0036] As an example, multiple heat exchange plates 21 can form multiple heat exchange plate groups, which can be arranged sequentially around a first direction. These heat exchange plate groups can be a top heat exchange plate group, a bottom heat exchange plate group, a first side heat exchange plate group, and a second side heat exchange plate group. The top heat exchange plate group can include at least one heat exchange plate 21, the bottom heat exchange plate group can include at least one heat exchange plate 21, the first side heat exchange plate group can include at least one heat exchange plate 21, and the second side heat exchange plate group can include at least one heat exchange plate 21, thereby achieving the effect of multiple heat exchange plates 21 arranged sequentially around the first direction. The multiple heat exchange plate groups can collectively define a beam channel 22. The top heat exchange plate group can be constructed as the top wall of the beam channel 22, the bottom heat exchange plate group can be constructed as the bottom wall of the beam channel 22, and the first and second side heat exchange plate groups can be constructed as the two side walls of the beam channel 22, respectively.

[0037] As an example, such as Figure 2 As shown, the top heat exchange plate assembly may include three heat exchange plates 21, and the first side heat exchange plate assembly and the second side heat exchange plate assembly may each include four heat exchange plates 21, so that the heat exchange plate assembly 20 can define a beam channel 22 with a rectangular longitudinal section.

[0038] As an example, such as Figure 2 As shown, the mounting frame 10 can have multiple weight-reduction holes 12, which can meet the lightweight design requirements without affecting the structural strength of the mounting frame 10.

[0039] In some embodiments of the present invention, such as Figure 3 and Figure 4 As shown, the heat exchange plate 21 may include: a heat exchange plate body 211 and a floating connection structure 212. The floating connection structure 212 is disposed on the heat exchange plate body 211 and located on the side of the heat exchange plate body 211 facing the mounting frame 10. The floating connection structure 212 is assembled with the mounting frame 10 so that the heat exchange plate 21 can be floatingly disposed on the mounting frame 10.

[0040] A floating connection structure 212 can be disposed on the heat exchange plate body 211. The floating connection structure 212 can be connected to the heat exchange plate body 211 by welding, snap-fitting, or other methods. The floating connection structure 212 can be located on the side of the heat exchange plate body 211 facing the mounting frame 10. The floating connection structure 212 can be assembled with the mounting frame 10. The floating connection structure 212 can be connected to the mounting frame 10 by welding, screwing, or other methods. The floating connection structure 212 can be used to connect the heat exchange plate body 211 and the mounting frame 10. Along the arrangement direction of the heat exchange plate body 211 and the mounting frame 10, the distance between the two ends of the floating connection structure 212 and the heat exchange plate body 211 and the mounting frame 10 can vary. The floating connection structure 212 can adapt to the change in distance between the side of the heat exchange plate body 211 facing the mounting frame 10 and the mounting frame 10, thereby allowing the heat exchange plate 21 to be floatingly disposed on the mounting frame 10.

[0041] When the scraper 100 is under high heat load, the heat exchange plate body 211 is heated and expands along its arrangement direction with the mounting frame 10. The side of the heat exchange plate body 211 facing the mounting frame 10 moves toward the mounting frame 10, and the distance between the side of the heat exchange plate body 211 facing the mounting frame 10 and the mounting frame 10 decreases. The end of the floating connection structure 212 connected to the heat exchange plate body 211 moves synchronously with the heat exchange plate body 211. When the neutral beam injection system 1 is not working, i.e., when the scraper 100 is not under high heat load conditions, the heat exchange plate body 211 cools down and shrinks. The side of the heat exchange plate body 211 facing the mounting frame 10 moves away from the mounting frame 10, increasing the distance between the side of the heat exchange plate body 211 facing the mounting frame 10 and the mounting frame 10. The end of the floating connection structure 212 connected to the heat exchange plate body 211 moves synchronously with the heat exchange plate body 211. This helps to further realize the effect of the heat exchange plate 21 being floatingly mounted on the mounting frame 10, further reduces the probability of stress concentration at the connection between the heat exchange plate 21 and the mounting frame 10 when the heat exchange plate 21 deforms due to heat, reduces the probability of damage or loosening at the connection between the heat exchange plate 21 and the mounting frame 10, and improves the reliability of the scraper 100.

[0042] In some embodiments of the present invention, such as Figure 3 and Figure 4As shown, the floating connection structure 212 may include: a mounting base 2121, a connecting rod 2122, and an elastic element 2123. The mounting base 2121 is fixed to the heat exchange plate body 211. The mounting base 2121 has a limiting wall 21211. Along the arrangement direction of the heat exchange plate body 211 and the floating connection structure 212, the limiting wall 21211 and the heat exchange plate body 211 are spaced apart. The connecting rod 2122 passes through the limiting wall 21211 and the mounting frame 10 along the arrangement direction of the heat exchange plate body 211 and the floating connection structure 212. The end of the connecting rod 2122 facing the heat exchange plate body 211 forms a limiting block 21221 that abuts against the limiting wall 21211. The elastic element 2123 is sleeved on the connecting rod 2122, and the elastic element 2123 is configured to be compressed between the mounting frame 10 and the limiting wall 21211.

[0043] The mounting base 2121 can be fixedly connected to the heat exchange plate body 211 by means of snap-fit, welding, etc. The mounting base 2121 can form a limiting wall 21211, which can be spaced apart from the heat exchange plate body 211 along the arrangement direction of the heat exchange plate body 211 and the floating connection structure 212. A connecting rod 2122 can pass through the limiting wall 21211 along the arrangement direction of the heat exchange plate body 211 and the floating connection structure 212. A limiting block 21221 can be formed at the end of the connecting rod 2122 facing the heat exchange plate body 211. The limiting block 21221 can be located between the limiting wall 21211 and the heat exchange plate body 211, and can abut against and limit the movement of the limiting wall 21211. The connecting rod 2122 can also be inserted into the mounting frame 10. The connecting rod 2122 can be assembled with the mounting frame 10 to achieve the effect of the floating connection structure 212 connecting the heat exchange plate body 211 and the mounting frame 10.

[0044] The connecting rod 2122 can extend along the arrangement direction of the heat exchange plate body 211 and the floating connection structure 212. The elastic element 2123 can be sleeved on the connecting rod 2122, which helps to improve the structural compactness of the floating connection structure 212, reduce the space occupied by the floating connection structure 212, and reduce the probability of the elastic element 2123 falling off the connecting rod 2122, thus improving the reliability of the floating connection structure 212. As an example, the elastic element 2123 can be a spring. The two ends of the elastic element 2123 can respectively abut against and limit the limiting wall 21211 and the mounting frame 10, and the elastic element 2123 can always be compressed between the mounting frame 10 and the limiting wall 21211. When the scraper 100 is not under high heat load conditions, the elastic element 2123 is compressed between the mounting frame 10 and the limiting wall 21211. The elastic force of the elastic element 2123 can act on the limiting wall 21211 and the mounting frame 10 respectively, which is beneficial to improving the stability of the connection between the limiting wall 21211 and the mounting frame 10, and is beneficial to further improving the reliability of the scraper 100.

[0045] When the scraper 100 is under high heat load, the heat exchange plate body 211 expands along the arrangement direction of the heat exchange plate body 211 and the mounting frame 10. The side of the heat exchange plate body 211 facing the mounting frame 10 drives the mounting base 2121 to move towards the mounting frame 10 along the arrangement direction of the heat exchange plate body 211 and the mounting frame 10. The elastic element 2123 is further compressed. The elastic element 2123 can absorb energy, which helps to reduce the probability of thermal expansion stress being transmitted to the mounting frame 10, further reduces the probability of deformation of the mounting frame 10, and further extends the service life of the scraper 100. Furthermore, by setting the elastic element 2123, it is beneficial to further realize the effect of the floating connection structure 212 adapting to the change in distance between the side of the heat exchange plate body 211 facing the mounting frame 10 and the mounting frame 10, and further enables the heat exchange plate 21 to be floatably mounted on the mounting frame 10.

[0046] As an example, the limiting wall 21211 may have a first mounting hole 21213, which can penetrate the limiting wall 21211 along the thickness direction, and the connecting rod 2122 can pass through the first mounting hole 21213.

[0047] As an example, the mounting base 2121 may have a connecting wall 21212, which can be connected between the heat exchange plate body 211 and the limiting wall 21211. The connecting wall 21212 can be integrally formed with the limiting wall 21211, and the connecting wall 21212 can be welded to the heat exchange plate body 211. Figure 5 As shown, the connecting wall 21212 can extend circumferentially along the limiting wall 21211, and the connecting wall 21212 can be constructed as a ring structure.

[0048] In some embodiments of the present invention, such as Figure 4 As shown, the floating connection structure 212 may further include: a first limiting ring 2124, which is located on the side of the mounting frame 10 away from the heat exchange plate body 211, and is fixed to the connecting rod 2122 and contacts the mounting frame 10 for limiting.

[0049] The first limiting ring 2124 can be located on the side of the mounting frame 10 away from the heat exchange plate body 211. The first limiting ring 2124 can be fixed to the connecting rod 2122 by means of screwing, welding, etc. The first limiting ring 2124 can contact and limit the mounting frame 10. The first limiting ring 2124 can achieve the effect of limiting the mounting frame 10, which helps to reduce the separation effect between the mounting frame 10 and the connecting rod 2122, and helps to improve the reliability of the connection between the mounting frame 10 and the heat exchange plate 21.

[0050] As an example, the outer peripheral wall of the connecting rod 2122 can be formed with an external thread, and the inner peripheral wall of the first limiting ring 2124 can be formed with an internal thread. The external thread can be assembled with the internal thread, and the first limiting ring 2124 can be screwed to the connecting rod 2122, thereby facilitating the assembly of the connecting rod 2122 and the first limiting ring 2124.

[0051] In some embodiments of the present invention, the floating connection structure 212 may further include: a second limiting ring 2125, which is fixed to the connecting rod 2122 and located between the mounting frame 10 and the elastic member 2123, and the second limiting ring 2125 abuts against both the mounting frame 10 and the elastic member 2123.

[0052] The second limiting ring 2125 can be fixed to the connecting rod 2122, and the second limiting ring 2125 can be located between the mounting frame 10 and the elastic member 2123. The second limiting ring 2125 can abut against both the mounting frame 10 and the elastic member 2123, that is, the second limiting ring 2125 can cooperate with the limiting wall 21211 so that both ends of the elastic member 2123 abut against the second limiting ring 2125 and the limiting wall 21211 respectively, thereby achieving the effect of compressing the elastic member 2123 between the second limiting ring 2125 and the limiting wall 21211, which is beneficial to improving the reliability of the heat exchange plate 21 when it floats relative to the mounting frame 10. The second limiting ring 2125 can also be used in conjunction with the first limiting ring 2124. The mounting frame 10 can abut against the second limiting ring 2125 and the mounting frame 10 can contact and limit the first limiting ring 2124, so that the mounting frame 10 can be clamped between the first limiting ring 2124 and the second limiting ring 2125. This is beneficial to achieving the effect of fixed connection between the floating connection structure 212 and the mounting frame 10, and is beneficial to improving the stability and reliability of the mounting frame 10.

[0053] As an example, the outer peripheral wall of the connecting rod 2122 can be formed with an external thread, and the inner peripheral wall of the second limiting ring 2125 can be formed with an internal thread. The external thread can be assembled with the internal thread, and the second limiting ring 2125 can be screwed to the connecting rod 2122, thereby facilitating the assembly of the connecting rod 2122 and the second limiting ring 2125.

[0054] In some embodiments of the present invention, such as Figure 4 As shown, the second limiting ring 2125 may include two sub-limiting rings, which are arranged sequentially at intervals along the length of the connecting rod 2122, and the two sub-limiting rings abut against the mounting frame 10 and the elastic element 2123 respectively.

[0055] Two sub-limiting rings can be arranged alternately along the length of the connecting rod 2122. Each sub-limiting ring can abut against the mounting frame 10 and the elastic element 2123 respectively. One sub-limiting ring abuts against the mounting frame 10, and the other sub-limiting ring abuts against the elastic element 2123. This facilitates the cooperation of the second limiting ring 2125 with the limiting wall 21211, compressing the elastic element 2123 between the second limiting ring 2125 and the limiting wall 21211. It also facilitates the cooperation of the second limiting ring 2125 with the first limiting ring 2124, ensuring a fixed connection between the mounting frame 10 and the floating connection structure 212. Furthermore, by setting the two sub-limiting rings alternately, the probability of thermal expansion stress being transmitted to the mounting frame 10 is further reduced, thus extending the service life of the mounting frame 10.

[0056] As an example, the two sub-limiting rings can be referred to as the first sub-limiting ring 21251 and the second sub-limiting ring 21252, respectively. The first sub-limiting ring 21251 can be used to abut against the elastic element 2123, and the second sub-limiting ring 21252 can be used to abut against the mounting frame 10. The first sub-limiting ring 21251 can cooperate with the limiting wall 21211 to compress the elastic element 2123 between the second sub-limiting ring 2125 and the limiting wall 21211, which helps to further improve the reliability of the heat exchange plate 21 when it floats relative to the mounting frame 10. The second sub-limiting ring 21252 can cooperate with the first limiting ring 2124 to clamp the mounting frame 10 between the second sub-limiting ring 21252 and the first limiting ring 2124, which helps to further achieve the effect of fixed connection between the floating connection structure 212 and the mounting frame 10.

[0057] As an example, a gasket 2126 can be provided between the first sub-limiting ring 21251 and the elastic member 2123, and the elastic member 2123 can abut against the gasket 2126, which helps to extend the service life of the first sub-limiting ring 21251.

[0058] As an example, the outer peripheral wall of the connecting rod 2122 can be formed with external threads, and the inner peripheral walls of the two sub-limiting rings can be formed with internal threads. The external threads can be assembled with the internal threads, and both sub-limiting rings can be screwed to the connecting rod 2122.

[0059] In some embodiments of the present invention, such as Figure 4 As shown, the heat exchange plate 21 includes multiple floating connection structures 212, which are arranged sequentially along the first direction.

[0060] The heat exchange plate 21 may include multiple floating connection structures 212. These multiple floating connection structures 212 can be arranged sequentially along a first direction, spaced apart along the first direction, or evenly arranged along the first direction. By providing multiple floating connection structures 212, the connection strength between the corresponding heat exchange plate 21 and the mounting frame 10 is further improved, which in turn further enhances the reliability of the scraper 100.

[0061] As an example, such as Figure 5 As shown, the first mounting hole 21213 on the limiting wall 21211 of one of the multiple floating connection structures 212 can be constructed as an oblong hole, and the oblong hole 21213 can extend along the first direction. By setting the first mounting hole 21213 of one of the floating connection structures 212 as an oblong hole, deformation space can be provided for the deformation of the heat exchange plate 21 along the first direction when heated, which helps to reduce the probability of the heat exchange plate 21 warping or breaking along the first direction, helps to reduce the interaction force between the connecting rod 2122 and the mounting base 2121 along the first direction, helps to extend the service life of the floating connection structure 212, helps to further extend the service life of the heat exchange plate 21, and helps to further extend the service life of the scraper 100.

[0062] In some embodiments of the present invention, such as Figure 4 As shown, a heat exchange channel 213 for supplying heat exchange medium is formed inside the heat exchange plate 21. The heat exchange channel 213 is bent along the arrangement direction of the corresponding heat exchange plate 21 and the beam channel 22.

[0063] The heat exchange plate 21 can form a heat exchange channel 213, within which the heat exchange medium can flow. When the scraper 100 is under high heat load conditions, the heat exchange plate 21 can be heated and heated, and the low-temperature heat exchange medium can absorb heat energy. The heat exchange medium can exchange heat with the heat exchange plate 21. When the heat exchange medium flows out of the heat exchange plate 21, it can carry away heat, thereby achieving the effect of cooling the heat exchange plate 21. The heat exchange medium can flow along the extension direction of the heat exchange channel 213, which can be bent along the arrangement direction of the corresponding heat exchange plate 21 and the beam channel 22. This is beneficial for increasing the flow resistance of the heat exchange medium while improving the uniformity of contact between the heat exchange medium and the heat exchange plate 21, improving the heat exchange efficiency between the heat exchange medium and the heat exchange plate 21, reducing the demand for heat exchange medium, and enhancing the heat dissipation effect of the heat exchange plate 21.

[0064] In some embodiments of the present invention, such as Figure 4As shown, the heat exchange plate 21 has a first plate wall 214 and a second plate wall 215. The first plate wall 214 and the second plate wall 215 are opposite to and spaced apart along the arrangement direction of the respective heat exchange plate 21 and the beam channel 22. A plurality of first tooth structures 2141 are formed on the side of the first plate wall 214 facing the second plate wall 215. The plurality of first tooth structures 2141 are arranged sequentially at intervals along the first direction. A plurality of second tooth structures 2151 are formed on the side of the second plate wall 215 facing the first plate wall 214. The plurality of second tooth structures 2151 are arranged sequentially at intervals along the first direction. A second tooth structure 2151 extends between any two adjacent first tooth structures 2141 to form a heat exchange channel 213 in the heat exchange plate 21.

[0065] The heat exchange plate 21 may have a first plate wall 214 and a second plate wall 215. The first plate wall 214 and the second plate wall 215 may be opposite to and spaced apart along the respective arrangement direction of the heat exchange plate 21 and the beam channel 22. The gap between the first plate wall 214 and the second plate wall 215 may define a heat exchange flow channel 213. A plurality of first tooth structures 2141 are formed on the side of the first plate wall 214 facing the second plate wall 215. The plurality of first tooth structures 2141 may be arranged sequentially and spaced apart along a first direction. The plurality of first tooth structures 2141 may be evenly arranged, and the spacing between any two adjacent first tooth structures 2141 may be equal. A plurality of second tooth structures 2151 are formed on the side of the second plate wall 215 facing the first plate wall 214. The plurality of second tooth structures 2151 may be arranged sequentially and spaced apart along the first direction. The plurality of second tooth structures 2151 may be evenly arranged, and the spacing between any two adjacent second tooth structures 2151 may be equal. The distance between two adjacent first tooth structures 2141 and the distance between two adjacent second tooth structures 2151 can be equal. A second tooth structure 2151 can extend between any two adjacent first tooth structures 2141, meaning that multiple first tooth structures 2141 and multiple second tooth structures 2151 can be staggered along the first direction. This allows the formation of a heat exchange channel 213 within the heat exchange plate 21, bent along the arrangement direction of the corresponding heat exchange plate 21 and the flow channel 22. This further increases the flow resistance of the heat exchange medium while improving the uniformity of contact between the heat exchange medium and the heat exchange plate 21, further improving the heat exchange efficiency between the heat exchange medium and the heat exchange plate 21, and further enhancing the heat dissipation effect of the heat exchange plate 21.

[0066] As an example, the scraper 100 may include an inlet pipe 31 and an outlet pipe 32, which may be spaced apart along a first direction. The inlet pipe 31 may extend circumferentially along the mounting frame 10 and may be located on the side of the mounting frame 10 opposite to the heat exchanger plate assembly 20. The outlet pipe 32 may extend circumferentially along the mounting frame 10 and may be located on the side of the mounting frame 10 opposite to the heat exchanger plate assembly 20. Both the inlet pipe 31 and the outlet pipe 32 may communicate with the heat exchange channels 213 of the plurality of heat exchangers 21.

[0067] As an example, the heat exchange plate body 211 can have an inlet 216 and an outlet 217, which can be located on the second plate wall 215. Both the inlet 216 and the outlet 217 can penetrate the second plate wall 215 along its thickness direction. The inlet 216 and the outlet 217 can be arranged opposite to each other and spaced apart along a first direction. The heat exchange channel 213 can connect the inlet 216 and the outlet 217. The inlet 216 can be connected to the inlet pipe 31, and the outlet 217 can be connected to the outlet pipe 32. This allows the heat exchange medium in the inlet pipe 31 to flow into the heat exchange channel 213 through the inlet 216, and the heat exchange medium in the heat exchange channel 213 to flow into the outlet pipe 32 through the outlet 217.

[0068] As an example, the second plate wall 215 may not have the second tooth structure 2151 at both ends along the first direction, thereby increasing the volume of the heat exchange channel 213 at both ends along the first direction. This facilitates the flow of heat exchange medium into and out of the heat exchange channel 213, which helps reduce the probability of blockage of heat exchange medium at the inlet 216 or outlet 217 and improves the reliability of the heat exchange channel 213.

[0069] As an example, the heat exchanger assembly 20 may further include a first connecting structure 23, a second connecting structure 24, and a connecting hose 25. Both the first connecting structure 23 and the second connecting structure 24 can be connected to the heat exchanger body 211, and the first connecting structure 23 and the second connecting structure 24 may be spaced apart along a first direction. The first connecting structure 23 may be connected to the liquid inlet 216 of the heat exchanger body 211, and the first connecting structure 23 may connect to the corresponding liquid inlet 216 and the liquid inlet pipe 31. The connecting hose 25 may be connected between the corresponding first connecting structure 23 and the liquid inlet pipe 31. The second connecting structure 24 may be connected to the liquid outlet 217 of the heat exchanger body 211, and the second connecting structure 24 may connect to the corresponding liquid outlet 217 and the liquid outlet pipe 32. The connecting hose 25 may be a corrugated pipe. There can be multiple first connecting structures 23, multiple second connecting structures 24 and multiple connecting hoses 25. Multiple first connecting structures 23 and multiple second connecting structures 24 can be set one-to-one with multiple heat exchange plates 21. Each heat exchange plate 21 can be connected to the liquid inlet pipe 31 and the liquid outlet pipe 32 through two connecting hoses 25.

[0070] As an example, both the first connecting structure 23 and the second connecting structure 24 can be constructed as a three-way structure. Each heat exchange plate 21 can have two liquid inlets 216. The inlet of the first connecting structure 23, which is constructed as a three-way structure, can be connected to the liquid inlet pipe 31 via a connecting hose 25. The two outlets of the first connecting structure 23, which is constructed as a three-way structure, can be plugged into the two liquid inlets 216 respectively. Each heat exchange plate 21 can have two liquid outlets 217. The outlet of the second connecting structure 24, which is constructed as a three-way structure, can be connected to the liquid outlet pipe 32 via a connecting hose 25. The two inlets of the second connecting structure 24, which is constructed as a three-way structure, can be plugged into the two liquid outlets 217 respectively.

[0071] According to a second aspect of the present invention, a neutral beam injection system 1 includes the beam scraper 100 described above.

[0072] According to the neutral beam injection system 1 of the present application embodiment, using the beam scraper 100 in the above embodiment is beneficial to improving the reliability of the neutral beam injection system 1, reducing the use of heat exchange medium, and reducing costs.

[0073] As an example, such as Figure 1As shown, the neutral beam injection system 1 may further include: an ion source 200, a deflecting magnet 300, and an ionizer 400. When the plasma generated by the ion source 200 passes through the deflecting magnet 300, a portion of the charged particles will be deflected into the ionizer 400. The remaining high-energy neutral particle beam can be directed towards the tokamak main unit through the beam scraper 100. The beam scraper 100 can correct the high-energy neutral particle beam entering the beam channel 22. Since the stray particles in the high-energy neutral particle beam carry a large amount of energy, the stray high-energy neutral particles can collide with the inner wall of the beam channel 22. The kinetic energy of the high-energy neutral particles can be converted into heat energy, thereby placing the beam scraper 100 under a high heat load condition. The beam scraper 100 can remove the generated heat energy through the heat exchange medium in the heat exchange channel 213.

[0074] As an example, when the neutral beam injection system 1 is working, a heat exchange medium is first introduced into the scraper 100. When the ion source 200 is turned on, the scraper 100 is under a high heat load condition. At this time, the heat exchange medium in the heat exchange plate assembly 20 flows through the heat exchange channel 213 and carries away heat, thereby achieving the heat dissipation effect of the scraper 100. As the neutral beam injection system 1 reaches a steady state, the scraper 100 will deform along the arrangement direction of the heat exchange plate 21 and the beam channel 22 and in the first direction due to the increase in temperature. By setting the floating connection structure 212 and the first assembly hole 21213 with a waist-shaped hole, it is beneficial to meet the thermal deformation compensation of the heat exchange plate 21, so that the neutral beam injection system 1 can operate in a steady state. When the neutral beam injection system 1 stops working, as the temperature decreases, the scraper 100 will recover its deformation. At this time, the heat exchange plate 21 can adaptively return to its initial state.

[0075] Other configurations and operations of the beam scraper 100 and neutral beam injection system 1 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A scraper, characterized in that, include: Mounting frame (10) defines an assembly space (11) and both ends of the assembly space (11) are open along a first direction; A heat exchange plate assembly (20) includes a plurality of heat exchange plates (21), each of which extends along the first direction, and at least a portion of each heat exchange plate (21) is assembled within the assembly space (11). The plurality of heat exchange plates (21) are arranged sequentially around the first direction so that the heat exchange plate assembly (20) defines a beam channel (22) extending along the first direction. The heat exchange plates (21) are buoyantly disposed on the mounting frame (10) along their own arrangement direction and that of the beam channel (22).

2. The scraper according to claim 1, characterized in that, The heat exchange plate (21) includes a heat exchange plate body (211) and a floating connection structure (212). The floating connection structure (212) is disposed on the heat exchange plate body (211) and located on the side of the heat exchange plate body (211) facing the mounting frame (10). The floating connection structure (212) is assembled with the mounting frame (10) so that the heat exchange plate (21) can be floatingly disposed on the mounting frame (10).

3. The scraper according to claim 2, characterized in that, The floating connection structure (212) includes: a mounting base (2121), a connecting rod (2122), and an elastic element (2123). The mounting base (2121) is fixed to the heat exchange plate body (211). The mounting base (2121) has a limiting wall (21211) along the arrangement direction of the heat exchange plate body (211) and the floating connection structure (212). The limiting wall (21211) is spaced apart from the heat exchange plate body (211). The connecting rod (2122) runs along the heat exchange plate body. (211) and the floating connection structure (212) are arranged in the direction of passing through the limiting wall (21211) and the mounting frame (10). The end of the connecting rod (2122) facing the heat exchange plate body (211) has a limiting block (21221) that abuts against the limiting wall (21211). The elastic element (2123) is sleeved on the connecting rod (2122) and the elastic element (2123) is configured to be compressed between the mounting frame (10) and the limiting wall (21211).

4. The scraper according to claim 3, characterized in that, The floating connection structure (212) further includes: a first limiting ring (2124), which is located on the side of the mounting frame (10) away from the heat exchange plate body (211). The first limiting ring (2124) is fixed to the connecting rod (2122) and contacts and limits the mounting frame (10).

5. The scraper according to claim 3, characterized in that, The floating connection structure (212) further includes a second limiting ring (2125), which is fixed to the connecting rod (2122) and located between the mounting frame (10) and the elastic member (2123). The second limiting ring (2125) abuts against both the mounting frame (10) and the elastic member (2123).

6. The scraper according to claim 5, characterized in that, The second limiting ring (2125) includes two sub-limiting rings, which are arranged sequentially at intervals along the length of the connecting rod (2122), and the two sub-limiting rings respectively abut against the mounting frame (10) and the elastic element (2123).

7. The scraper according to claim 5, characterized in that, The heat exchange plate (21) includes a plurality of floating connection structures (212), which are arranged sequentially along the first direction.

8. The scraper according to any one of claims 1-7, characterized in that, The heat exchange plate (21) has a heat exchange channel (213) for supplying heat exchange medium flow. The heat exchange channel (213) is bent along the arrangement direction of the heat exchange plate (21) and the beam channel (22).

9. The scraper according to claim 8, characterized in that, The heat exchange plate (21) has a first plate wall (214) and a second plate wall (215). The first plate wall (214) and the second plate wall (215) are opposite to and spaced apart along the arrangement direction of the heat exchange plate (21) and the beam channel (22). A plurality of first tooth structures (2141) are formed on the side of the first plate wall (214) facing the second plate wall (215). The plurality of first tooth structures (2141) are arranged in sequence at intervals along the first direction. A plurality of second tooth structures (2151) are formed on the side of the second plate wall (215) facing the first plate wall (214). The plurality of second tooth structures (2151) are arranged in sequence at intervals along the first direction. A second tooth structure (2151) extends between any two adjacent first tooth structures (2141) to form the heat exchange channel (213) in the heat exchange plate (21).

10. A neutral beam injection system, characterized in that, Includes the scraper (100) according to any one of claims 1-9.

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