Directional cooling device for high heat load area of ion accelerator

Abstract

The invention relates to the technical field of ion accelerator cooling, in particular to an ion accelerator high-heat load area directional cooling device which comprises a fixing pipe, a connecting pipe and a cooling pipe, the fixing pipe is connected to the outlet end of an ion accelerator vacuum pipeline, the connecting pipe is connected with the fixing pipe, and the cooling pipe forms a spiral structure to be arranged on the peripheral face of the connecting pipe in a sleeving mode. A cooling medium circulates in the cooling pipe, the cooling pipe comprises a first spiral section close to the fixed pipe and a second spiral section away from the fixed pipe, and the screw pitch of the first spiral section is smaller than that of the second spiral section. According to the ion accelerator cooling device, segmented intensified cooling in a high-heat load area of the ion accelerator is achieved through the variable-pitch cooling pipe, high-temperature heat dissipation is enhanced through the first spiral section with the dense pitch, flow resistance is reduced through the second spiral section with the loose pitch, the cooling efficiency and maintenance convenience of the ion accelerator cooling device are remarkably improved, and the service life of the ion accelerator is prolonged. Directional reinforced cooling of high-heat load areas such as a front-end pipeline of an analysis magnet and an outlet of an accelerating tube is achieved, and beam thermal distortion is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of ion accelerator cooling, and in particular to a directional cooling device for a high heat load area of an ion accelerator. Background Art

[0002] Ion accelerators are widely used in nuclear physics research, materials science, and medical isotope production. The performance of an ion accelerator's injector directly impacts the efficiency and quality of the beam. A key factor in determining the performance of an ion accelerator's injector is the cooling effect of the injector during use.

[0003] Existing ion accelerator injection devices usually use a simple cooling structure to cool the required pipes and other fittings. The cooling efficiency of all sections is consistent, and the thermal load differences between different sections are not taken into account. For sections such as the front-end pipeline of the analytical magnet and the outlet of the accelerator tube, their heat load is significantly higher than other areas. Using conventional consistent cooling structures, it is difficult to achieve efficient heat dissipation in the relevant high-heat-load areas, resulting in local overheating and affecting beam stability. Summary of the Invention

[0004] The present invention provides a directional cooling device for high heat load areas of an ion accelerator, which is used to solve the defect in the prior art that the cooling structure of the ion accelerator injection device is difficult to achieve efficient heat dissipation in the relevant high heat load areas, resulting in local overheating and affecting the beam stability, and realizes directional and efficient cooling of the high heat load sections of the ion accelerator injection device.

[0005] The present invention provides a directional cooling device for a high heat load area of an ion accelerator, comprising a fixed tube, a connecting tube and a cooling tube. The fixed tube is fixedly connected to the outlet end of a vacuum pipe of the ion accelerator, the connecting tube is connected to the fixed tube, the cooling tube forms a spiral structure and is sleeved on the outer circumferential surface of the connecting tube, a cooling medium flows through the cooling tube for cooling the connecting tube, and the cooling tube comprises a first spiral section close to the fixed tube and a second spiral section away from the fixed tube, the first spiral section and the second spiral section are connected, and the pitch of the first spiral section is smaller than the pitch of the second spiral section.

[0006] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, the directional cooling device for a high heat load area of an ion accelerator further includes a cooling box, the connecting pipe is arranged through the cooling box, the cooling pipe is located inside the cooling box, a liquid inlet pipe is passed through the upper surface of the cooling box, the liquid inlet pipe is connected to the first spiral section, and a liquid outlet pipe is passed through the lower surface of the cooling box, the liquid outlet pipe is connected to the second spiral section.

[0007] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, the cooling box includes two spliced and fixed half-boxes, and the two half-boxes are spliced and fixed by threaded columns. A temperature sensor is fixed on the cooling box, and the temperature probe of the temperature sensor is closely attached to the outer peripheral surface of the connecting pipe.

[0008] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, the end of the connecting pipe used to connect to the fixed pipe is provided with a cannula, and a plurality of slots are distributed circumferentially on the outer circumference of the cannula; a sliding sleeve is provided on the sliding sleeve of the outer circumference of the fixed pipe, and a plurality of sliding columns are movably penetrated on the sliding sleeve along the circumference, and the sliding columns are suitable for moving to the slots to realize the connection between the sliding sleeve and the cannula.

[0009] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, a portion of the sliding column located outside the sliding sleeve is fixedly sleeved with a limit plate, and a portion of the sliding column located inside the sliding sleeve is sleeved with a mounting plate and a return spring, one end of the return spring is connected to the inner wall of the sliding sleeve, and the other end is connected to the mounting plate, and an insert is installed on the side of the mounting plate facing away from the return spring.

[0010] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, an annular groove is provided on the outer peripheral surface of the insert tube at a position lateral to the slot, and the lateral groove walls of the annular groove form inclined groove walls.

[0011] The insert block is provided with an inclined surface with the same inclination as the inclined surface groove wall, and the end of the sliding column located outside the sliding sleeve is provided with a pull ring.

[0012] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, a plurality of mounting grooves are distributed circumferentially on the outer peripheral surface of the insert tube, a compression spring and a clamping column are arranged in the mounting groove, one end of the compression spring is connected to the inner wall of the mounting groove, and the other end is connected to the clamping column.

[0013] The end of the fixing tube is circumferentially provided with a plurality of through holes matching the clamping columns.

[0014] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, a mounting ring is fixedly sleeved on the outer circumferential surface of the fixed tube, and a plurality of sliding rods are evenly distributed on the end surface of the mounting ring facing the connecting tube. The sliding rods are penetrated through the wall of the sliding sleeve and form a sliding fit with the sliding sleeve. A tension spring is sleeved on the sliding rod, and one end of the tension spring is connected to the mounting ring, and the other end is connected to the sliding sleeve.

[0015] According to a directional cooling device for a high heat load area of an ion accelerator provided by the present invention, a spherical bump is installed at the end of the clamping column facing the fixed tube, the sliding sleeve slides in contact with the outer circumference of the fixed tube, and the inner wall surface of the sliding sleeve is suitable for forming contact pressure with the spherical bump.

[0016] According to the directional cooling device for a high heat load area of an ion accelerator provided by the present invention, a sealing sleeve is provided at the end of the insert tube facing the fixed tube.

[0017] The present invention provides a directional cooling device for high heat load areas of an ion accelerator, which can be used for cooling high heat load areas of an ion accelerator. The fixed tube serves as a permanent interface and is fixed to the outlet end of the vacuum pipe of the ion accelerator by welding or flange connection to ensure vacuum sealing. The connecting tube adopts a quick-release connection structure to connect with the fixed tube, allowing the cooling unit to be replaced without disrupting the vacuum environment. The cooling tube is wrapped around the outer circumference of the connecting tube. When the high-temperature beam and ion flow pass through the connecting tube, the cooling medium inside the cooling tube wrapped around its outer circumference cools the connecting tube and the high-temperature ion flow inside the connecting tube. The cooling tube adopts a variable pitch design, with a first spiral section as the proximal end and a dense pitch, and a second spiral section as the distal end and a loose pitch. The cooling medium in the cooling tube first flows through the first spiral section and then to the second spiral section under forced convection conditions. The dense pitch of the first spiral section enhances high-temperature heat dissipation, while the loose pitch of the second spiral section reduces flow resistance. This significantly improves the cooling efficiency and maintenance convenience of the ion accelerator cooling device, realizes directional enhanced cooling of high heat load areas such as the front pipeline of the analytical magnet and the accelerator tube outlet, and avoids beam thermal distortion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of the directional cooling device for the high heat load area of the ion accelerator provided by the present invention.

[0020] Figure 2 It is a structural schematic diagram of the cooling pipe provided by the present invention.

[0021] Figure 3 It is a schematic diagram of the connection structure of the fixed pipe and the connecting pipe provided by the present invention.

[0022] Figure 4 It is a structural schematic diagram of the sliding sleeve provided by the present invention.

[0023] Figure 5 It is a structural schematic diagram of the cannula provided by the present invention.

[0024] Figure 6 It is a schematic diagram of the assembly structure of the clamping column provided by the present invention.

[0025] Figure numerals: 1. fixing tube; 11. through hole; 12. mounting ring; 13. sliding rod; 14. tension spring; 2. connecting tube; 21. insert tube; 22. slot; 23. annular groove; 24. inclined groove wall; 25. mounting groove; 26. compression spring; 27. clamping column; 28. spherical bump; 29. sealing sleeve; 3. cooling tube; 31. first spiral section; 32. second spiral section; 4. cooling box; 41. liquid inlet pipe; 42. liquid outlet pipe; 43. threaded column; 44. temperature sensor; 5. sliding sleeve; 51. sliding column; 52. limit plate; 53. mounting plate; 54. reset spring; 55. insert block; 56. pull ring; 57. inclined surface. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0030] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0031] The following combination Figures 1 to 6 The structure and working process of the directional cooling device of the high heat load area of the ion accelerator of the present invention are described.

[0032] One embodiment of the present invention provides a directional cooling device for a high heat load area of an ion accelerator, Figure 1 and Figure 2 As shown, the directional cooling device for the high heat load area of the ion accelerator includes a fixed tube 1, a connecting tube 2 and a cooling tube 3. The fixed tube 1 is fixedly connected to the outlet end of the vacuum pipe of the ion accelerator, and the connecting tube 2 is detachably connected to the fixed tube 1. The cooling tube 3 forms a spiral structure and is sleeved on the outer peripheral surface of the connecting tube 2. A cooling medium flows in the cooling tube 3 for cooling the connecting tube 2. The cooling tube 3 includes a first spiral section 31 close to the fixed tube 1 and a second spiral section 32 away from the fixed tube 1. The first spiral section 31 and the second spiral section 32 are connected, and the pitch of the first spiral section 31 is smaller than the pitch of the second spiral section 32.

[0033] The directional cooling device for high heat load areas of an ion accelerator of this embodiment can be used for cooling high heat load areas of an ion accelerator. The fixed tube 1 serves as a permanent interface and is fixed to the outlet end of the ion accelerator's vacuum pipe by welding or flange connection to ensure vacuum sealing. The connecting tube 2 is connected to the fixed tube 1 using a quick-release connection structure, allowing the cooling unit to be replaced without disrupting the vacuum environment. The cooling tube 3 is wrapped around the outer circumference of the connecting tube 2. When the high-temperature beam and ion flow pass through the connecting tube 2, the cooling medium (generally cooling water) inside the cooling tube 3 wrapped around its outer circumference cools the connecting tube 2 and the high-temperature ion flow inside the connecting tube 2. The cooling tube 3 adopts a variable pitch design, with a first spiral section 31 as the proximal end and a dense pitch, and a second spiral section 32 as the distal end and a loose pitch. The cooling medium in the cooling tube 3 flows through the first spiral section 31 and then to the second spiral section 32 under forced convection conditions.

[0034] It is understood that after the fixed tube 1 and the connecting tube 2 are connected, the high-temperature ions enter the fixed tube 1 through the outlet tube of the ion accelerator injection device and then flow into the connecting tube 2. The cooling tube 3 on the outer surface of the connecting tube 2 cools the high-temperature ions. When the accelerated ions pass through the connecting tube 2, they first pass through the first spiral section 31 of the cooling tube 3 with dense turns. The first spiral section 31 of the cooling tube 3 in this embodiment has a tightly arranged spiral with a small pitch, so that the cooling medium forms a multi-turn flow path when flowing through this area. The first spiral section 31 is located in the high-temperature region near the ion beam, significantly increasing the residence time of the cooling medium in the high-temperature region and maximizing the contact area between the cooling medium and the wall of the connecting tube 2. The multi-turn flow path prolongs the heat exchange time, ensuring that the heat generated by the high-temperature ion beam can be fully absorbed. The tight spiral structure achieves the largest heat exchange area within a limited space, making it particularly suitable for the initial cooling stage of the accelerated high-temperature ion beam.

[0035] After being cooled by the first spiral section 31 of the cooling tube 3, the ion beam continues to flow in the connecting tube 2 and reaches the second spiral section 32 of the cooling tube 3. The spiral arrangement in the second spiral section 32 of the cooling tube 3 is relatively loose. On the one hand, the appropriately widened pitch effectively reduces the flow resistance of the cooling medium and avoids the pressure accumulation of the cooling medium caused by the first spiral section 31. On the other hand, the second spiral section 32 balances the pressure distribution of the entire cooling system, ensuring that the cooling medium can flow out smoothly and preventing flow instability caused by uneven pressure. At the same time, although the heat exchange efficiency of the second spiral section 32 is relatively reduced, the temperature of the ion beam has dropped significantly after passing through the first spiral section 31. This staged design not only ensures the cooling effect but also maintains the fluid performance of the system.

[0036] In some embodiments of the ion accelerator high heat load area directional cooling device of the present invention, see Figure 1As shown, the directional cooling device for the high heat load area of the ion accelerator also includes a cooling box 4, the connecting pipe 2 is arranged through the cooling box 4, the cooling pipe 3 is located in the cooling box 4, a liquid inlet pipe 41 is passed through the upper surface of the cooling box 4, the liquid inlet pipe 41 is connected to the first spiral section 31, and a liquid outlet pipe 42 is passed through the lower surface of the cooling box 4, and the liquid outlet pipe 42 is connected to the second spiral section 32.

[0037] It is understood that high-temperature ions enter the fixed tube 1 through the outlet pipe of the ion accelerator injection device, and then flow into the connecting tube 2. When entering the cooling box 4, the cooling medium enters the cooling box 4 from the liquid inlet pipe 41, flows through the first spiral section 31 (to enhance heat dissipation in the high-temperature area) and the second spiral section 32 (to reduce flow resistance) of the cooling tube 3, and finally is discharged from the liquid outlet pipe 42, ultimately achieving a partitioned rapid cooling treatment of the ions. The cooling box 4 serves as a storage and circulation container for the cooling medium. The cooling medium circulates through the liquid inlet pipe 41 and the liquid outlet pipe 42. The upper surface of the cooling box 4 is fixedly connected to the liquid inlet pipe 41, and the lower surface of the cooling box 4 is fixedly connected to the liquid outlet pipe 42. The cooling medium inlets and outlets distributed above and below form a clear flow direction, avoiding the formation of a dead zone of the cooling medium in the cooling box 4. At the same time, the entire system forms a closed loop, which can cooperate with an external cooling device to achieve continuous circulation cooling and ensure the stability of the cooling efficiency.

[0038] The cooling box 4 as a whole functions as an external cooling component. The connecting tube 2 communicates with the fixed tube 1 and extends through the cooling box 4. In some specific examples, the cooling box 4 comprises two joined halves, which are secured together by threaded studs 43, facilitating quick assembly and fixation of the cooling component. A temperature sensor 44 is mounted on the cooling box 4. The probe of the temperature sensor 44 is in close contact with the outer surface of the connecting tube 2. The temperature sensor 44 monitors the temperature outside the beam pipe after cooling through the connecting tube 2 and the cooling tube 3, ensuring cooling efficiency.

[0039] In some embodiments of the ion accelerator high heat load area directional cooling device of the present invention, see Figure 3 As shown, the end of the connecting pipe 2 for connecting to the fixed pipe 1 is provided with an insert 21, and a plurality of slots 22 are distributed circumferentially on the outer circumference of the insert 21; a sliding sleeve 5 is provided on the sliding sleeve 5 on the outer circumference of the fixed pipe 1, and a plurality of sliding columns 51 are movably provided on the sliding sleeve 5 along the circumferential direction, and the sliding columns 51 are suitable for moving to the slots 22 to realize the connection between the sliding sleeve 5 and the connecting pipe 2.

[0040] This embodiment of the ion accelerator's high-heat-load zone directional cooling system utilizes a snap-on, quick-release mechanism to integrate the fixed tube 1 and connecting tube 2, significantly improving the cooling efficiency and ease of maintenance. During use, the accelerator's existing piping remains unchanged; the fixed tube 1 remains permanently attached to the vacuum piping. Subsequent connections require only the quick-release mechanism to connect and disconnect the connecting tube 2 and cooling box 4 modules.

[0041] It will be appreciated that in this embodiment, an insert tube 21 is provided at the end of the connecting tube 2. The insert tube 21 is used to plug into the fixed tube 1. After the insert tube 21 is inserted into the fixed tube 1, the sliding sleeve 5 on the outer circumference of the fixed tube 1 is slid, so that the sliding sleeve 5 and the sliding post 51 slide to the position of the slot 22 on the outer circumference of the insert tube 21. The sliding post 51 is inserted into the slot 22, thereby connecting the sliding sleeve 5 to the insert tube 21 and then connecting and fixing the fixed tube 1 to the connecting tube 2. During disassembly, the sliding post 51 can be simply pulled out of the slot 22 to disengage the sliding post 51 from the slot 22, thereby disconnecting the sliding sleeve 5 from the insert tube 21 and disconnecting the fixed tube 1 from the connecting tube 2.

[0042] For some specific examples, see Figure 4 As shown, the portion of the sliding column 51 located outside the sliding sleeve 5 is fixed with a limit plate 52, and the portion of the sliding column 51 located inside the sliding sleeve 5 is provided with a mounting plate 53 and a return spring 54. One end of the return spring 54 is connected to the inner wall of the sliding sleeve 5, and the other end is connected to the mounting plate 53. An insert 55 is installed on the side of the mounting plate 53 facing away from the return spring 54.

[0043] Combine Figure 3 and Figure 4 As shown, one end of the sliding column 51 extends into the sliding sleeve 5 and is fixedly connected to the mounting plate 53. The lower surface of the mounting plate 53 is fixedly installed with an insert block 55. The outer surface of the sliding column 51 is sleeved with a return spring 54. The two ends of the return spring 54 are respectively connected to the mounting plate 53 and the inner side wall of the sliding sleeve 5 to provide a reset force for the insert block 55. The insert block 55 is used to be inserted into the slot 22 and slidably set therewith. The width of the insert block 55 is the same as the width of the slot 22, so that the insert block 55 can be completely inserted into the interior of the slot 22. The portion where the sliding column 51 does not extend into the sliding sleeve 5 is fixedly installed with a limit plate 52. The limit plate 52 provided can facilitate the limiting treatment of the sliding column 51 to reduce the possibility of it falling off. During installation, after inserting the insert tube 21 into the fixed tube 1, slide the sliding sleeve 5 to the farthest sliding position. At this time, the sliding column 51 of the sliding sleeve 5 is just aligned with the slot 22, driving the sliding column 51 to move toward the slot 22, so that the insert block 55 is inserted into the slot 22, thereby realizing the rapid fixed installation of the insert tube 21 and the fixed tube 1.

[0044] Further, see Figure 5 As shown, an annular groove 23 is provided on the outer circumference of the insert 21, located to the side of the slot 22. The lateral groove wall of the annular groove 23 forms a beveled groove wall 24. The insert block 55 is provided with an inclined surface 57 with the same slope as the beveled groove wall 24. The end of the slide post 51 located outside the sliding sleeve 5 is provided with a pull ring 56.

[0045] It can be understood that an annular groove 23 is provided on the outer circumference of the insert 21, and the side wall of the annular groove 23 is provided with an inclined groove wall 24. The cross-sectional area of the insert block 55 is triangular, and the side wall of the insert block 55 is provided with an inclined surface 57 with the same inclination as the inclined groove wall 24. In the initial state, the insert block 55 at the lower end of the slide column 51 extends into the annular groove 23 and the inclined surface 57 of the insert block 55 contacts the inclined groove wall 24 of the annular groove 23, and the contact surface between the two forms a wedge-shaped structure. As the sliding sleeve 5 slides, the inclined groove wall 24 of the annular groove 23 continuously compresses the inclined surface 57 of the insert block 55, pushing the insert block 55 outward from the annular groove 23. When the insert block 55 at the lower end of the slide post 51 moves to the slot 22, the elastic force of the return spring 54 drives the insert block 55 to return to its original position, so that the insert block 55 is inserted into the slot 22. After the insert block 55 is inserted into the slot 22, when the insert tube 21 is pulled outward, the vertical portion of the insert block 55 contacts the inner wall of the slot 22, locking the insert block 55 and thus quickly securing the insert tube 21. When the connection between the insert tube 21 and the fixed tube 1 needs to be disconnected, the pull ring 56 provided on the end of the slide post 51 outside the sliding sleeve 5 is used to pull the slide post 51 away from the slot 22, causing the insert block 55 to disengage from the slot 22, thereby quickly disconnecting the insert tube 21 from the fixed tube 1.

[0046] In some embodiments of the ion accelerator high heat load area directional cooling device of the present invention, combined with Figure 3 and Figure 6 As shown, a plurality of mounting grooves 25 are distributed circumferentially on the outer circumferential surface of the insert tube 21, and a compression spring 26 and a clamping column 27 are arranged in the mounting groove 25. One end of the compression spring 26 is connected to the inner wall of the mounting groove 25, and the other end is connected to the clamping column 27. The end of the fixed tube 1 is provided with a plurality of through holes 11 matching the clamping column 27 along the circumferential direction.

[0047] As can be understood, the outer circumference of the insert tube 21 defines a mounting slot 25, within which a post 27 slides. The sidewall of the fixed tube 1 defines a through-hole 11 corresponding to the post 27. The post 27 extends into and slides within the through-hole 11. A compression spring 26 is also disposed within the mounting slot 25, with its ends respectively connected to the post 27 and the mounting slot 25. Before inserting the insert tube 21 into the fixed tube 1, the post 27 is pressed into the mounting slot 25, and then the insert tube 21 is inserted into the fixed tube 1. When the post 27 slides to the through-hole 11 of the fixed tube 1, the post 27 is subjected to the rebound force of the compression spring 26, driving it through the through-hole 11, thereby further connecting and securing the fixed tube 1 to the insert tube 21. The cooperation between the insert block 55 and the slot 22, and the post 27 and the through-hole 11, creates a dual connection and securement between the insert tube 21 (connecting tube 2) and the fixed tube 1, enhancing connection stability.

[0048] Specifically, when installing the ion accelerator high heat load area directional cooling device of this embodiment, after pressing the clamping column 27 to press it into the installation groove 25, the insert tube 21 is inserted into the fixed tube 1. The fixed tube 1 is provided with a through hole 11 that matches the clamping column 27. When the clamping column 27 slides to the through hole 11, the clamping column 27 is subjected to the rebound force of the compression spring 26, driving the clamping column 27 to pass through the through hole 11. At the same time, during the process of inserting the insert tube 21, the insert block 55 is always in contact with the outer surface of the insert tube 21. When the insert block 55 slides to the annular groove 23, it is rebounded by the return spring 54. The elastic force will drive the insert block 55 to extend into the annular groove 23. When the insert tube 21 and the sliding sleeve 5 continue to move relative to each other until the clamping column 27 passes through the through hole 11, the insert block 55 is now located at the slot 22. The insert block 55 is subjected to the rebound force of the return spring 54, so that the insert block 55 is inserted into the slot 22. After the insert block 55 is inserted into the slot 22, when the insert tube 21 is pulled out, the vertical part of the insert block 55 contacts the inner wall of the slot 22, and the clamping column 27 and the through hole 11 are also axially locked, so that the insert tube 21 (connecting tube 2) and the fixed tube 1 are doubly connected and fixed.

[0049] In some embodiments of the ion accelerator high heat load area directional cooling device of the present invention, see again Figure 3 As shown, a mounting ring 12 is fixedly mounted on the outer circumference of the fixed tube 1. Multiple slide bars 13 are evenly distributed on the end surface of the mounting ring 12 facing the connecting tube 2. The slide bars 13 penetrate the wall of the sliding sleeve 5 and form a sliding fit with the sliding sleeve 5. Tension springs 14 are mounted on the slide bars 13. One end of the tension spring 14 is connected to the mounting ring 12, and the other end is connected to the sliding sleeve 5. Furthermore, a spherical bump 28 is mounted on the end of the clamping column 27 facing the fixed tube 1. The sliding sleeve 5 slides against the outer circumference of the fixed tube 1, and the inner wall of the sliding sleeve 5 is suitable for contact and pressure with the spherical bump 28.

[0050] It can be understood that when the connecting pipe 2 needs to be quickly disassembled, the sliding column 51 is pulled outward, driving the plug block 55 to slide outward and separate from the slot 22, thereby releasing the locking fixation of the slot 22. At this time, the sliding sleeve 5 is pulled, and the sliding sleeve 5 drives the sliding column 51 and the plug block 55 to slide toward the mounting ring 12. At the same time, during the sliding process, the sliding sleeve 5 will squeeze the spherical protrusion 28 on the upper side of the clamping column 27, thereby squeezing the clamping column 27 into the mounting groove 25, releasing the locking fixation of the insert pipe 21. At this time, the connecting pipe 2 and the fixed pipe 1 can be quickly disassembled and separated by directly pulling out the connecting pipe 2. At this time, after disconnecting the circulation pipe connected to the liquid inlet pipe 41 and the liquid outlet pipe 42, the cooling box 4 can be directly pulled out for quick disassembly and maintenance.

[0051] In some embodiments of the directional cooling device for the high heat load area of the ion accelerator of the present invention, a sealing sleeve 29 is provided at the end of the cannula 21 facing the fixed tube 1. The sealing sleeve 29 is generally made of nitrile material. When the cannula 21 is inserted into the fixed tube 1 to connect the fixed tube 1 with the connecting tube 2, the sealing sleeve 29 can achieve sealing between the cannula 21 and the fixed tube 1 after insertion.

[0052] Based on the structures of the directional cooling devices for high-heat-load areas of ion accelerators described in the various embodiments or examples above, the present invention provides a cooling device that can be used in high-heat-load areas of ion accelerators. Through the design of a variable-pitch spiral cooling tube 3, the first spiral section 31 enhances high-temperature heat dissipation, while the second spiral section 32 reduces flow resistance. Combined with a snap-on quick-release mechanism, this significantly improves the cooling efficiency and maintenance convenience of the ion accelerator cooling device. It can provide targeted, enhanced cooling of high-heat-load areas such as the analytical magnet front-end pipeline and the accelerator tube outlet, thereby avoiding beam thermal distortion. Furthermore, through modular snap fasteners, a plug-and-slot linkage, and a spring return mechanism, the cooling device can be quickly disassembled. Furthermore, during installation and disassembly, there is no need to use disassembly tools such as screwdrivers, significantly reducing maintenance time and improving the efficiency of the device's disassembly and maintenance.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A directional cooling device for high heat load area of ion accelerator, characterized in that: include: A fixed tube (1) is fixedly connected to the outlet end of the vacuum pipe of the ion accelerator; A connecting pipe (2) connected to the fixed pipe (1); A cooling pipe (3) is formed into a spiral structure and is sleeved on the outer peripheral surface of the connecting pipe (2). A cooling medium flows in the cooling pipe (3) for cooling the connecting pipe (2). The cooling pipe (3) includes a first spiral section (31) close to the fixed pipe (1) and a second spiral section (32) away from the fixed pipe (1). The first spiral section (31) and the second spiral section (32) are connected, and the pitch of the first spiral section (31) is smaller than the pitch of the second spiral section (32).

2. The directional cooling device for high heat load area of ion accelerator according to claim 1, characterized in that: The ion accelerator high heat load zone directional cooling device further comprises a cooling box (4), the connecting pipe (2) is arranged through the cooling box (4), the cooling pipe (3) is located in the cooling box (4), a liquid inlet pipe (41) is passed through the upper surface of the cooling box (4), the liquid inlet pipe (41) is communicated with the first spiral section (31), and a liquid outlet pipe (42) is passed through the lower surface of the cooling box (4), the liquid outlet pipe (42) is communicated with the second spiral section (32).

3. The directional cooling device for high heat load area of ion accelerator according to claim 2, characterized in that: The cooling box (4) comprises two half-boxes that are spliced and fixed together, and the two half-boxes are spliced and fixed together by means of threaded columns (43). A temperature sensor (44) is fixedly mounted on the cooling box (4), and a temperature probe of the temperature sensor (44) is in close contact with the outer peripheral surface of the connecting pipe (2).

4. The directional cooling device for high heat load area of ion accelerator according to claim 1, characterized in that: The end of the connecting tube (2) for connecting to the fixed tube (1) is provided with a plug (21), and a plurality of slots (22) are distributed circumferentially on the outer peripheral surface of the plug (21); a sliding sleeve (5) is provided on the outer peripheral surface of the fixed tube (1), and a plurality of sliding columns (51) are movably provided on the sliding sleeve (5) along the circumferential direction, and the sliding columns (51) are suitable for moving to the slots (22) to achieve the connection between the sliding sleeve (5) and the plug (21).

5. The directional cooling device for high heat load area of ion accelerator according to claim 4, characterized in that: The portion of the sliding column (51) located outside the sliding sleeve (5) is fixed with a limit plate (52), and the portion of the sliding column (51) located inside the sliding sleeve (5) is provided with a mounting plate (53) and a return spring (54). One end of the return spring (54) is connected to the inner wall of the sliding sleeve (5), and the other end is connected to the mounting plate (53). An insert (55) is installed on the side of the mounting plate (53) facing away from the return spring (54).

6. The directional cooling device for high heat load area of ion accelerator according to claim 5, characterized in that: An annular groove (23) is provided on the outer peripheral surface of the insert tube (21) at a position on the side of the slot (22), and a lateral groove wall of the annular groove (23) forms an inclined groove wall (24); The insert block (55) is provided with an inclined surface (57) having the same inclination as the inclined surface groove wall (24), and the end of the sliding column (51) located outside the sliding sleeve (5) is provided with a pull ring (56).

7. The directional cooling device for high heat load area of ion accelerator according to any one of claims 4 to 6, characterized in that: A plurality of mounting grooves (25) are also distributed along the circumferential direction on the outer peripheral surface of the insert tube (21), and a compression spring (26) and a clamping column (27) are provided in the mounting groove (25), and one end of the compression spring (26) is connected to the inner wall of the mounting groove (25), and the other end is connected to the clamping column (27); The end of the fixing tube (1) is provided with a plurality of through holes (11) along the circumferential direction, which are matched with the clamping columns (27).

8. The directional cooling device for high heat load area of ion accelerator according to claim 7, characterized in that: A mounting ring (12) is fixedly sleeved on the outer circumference of the fixed tube (1), and a plurality of sliding rods (13) are evenly distributed on the end surface of the mounting ring (12) facing the connecting tube (2). The sliding rods (13) are penetrated through the wall of the sliding sleeve (5) and form a sliding fit with the sliding sleeve (5). A tension spring (14) is sleeved on the sliding rod (13), and one end of the tension spring (14) is connected to the mounting ring (12), and the other end is connected to the sliding sleeve (5).

9. The directional cooling device for high heat load area of ion accelerator according to claim 8, characterized in that: A spherical bump (28) is installed on the end of the clamping column (27) facing the fixed tube (1), the sliding sleeve (5) slides in contact with the outer peripheral surface of the fixed tube (1), and the inner wall surface of the sliding sleeve (5) is suitable for forming contact pressure with the spherical bump (28).

10. The directional cooling device for high heat load area of ion accelerator according to claim 7, characterized in that: The end of the inserting tube (21) facing the fixed tube (1) is provided with a sealing sleeve (29).

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