CN219591137U

CN219591137U - Isotope production device

Info

Publication number: CN219591137U
Application number: CN202321135419.9U
Authority: CN
Inventors: 杨磊; 唐庆峰; 张衡; 张建荣; 张雅玲; 张学智; 杨阳阳; 高笑菲; 詹文龙
Original assignee: Guangdong Provincial Laboratory Of Advanced Energy Science And Technology; Institute of Modern Physics of CAS
Current assignee: Guangdong Provincial Laboratory Of Advanced Energy Science And Technology; Institute of Modern Physics of CAS
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-08-25
Anticipated expiration: 2033-05-11

Abstract

The utility model provides an isotope production device which comprises a mounting bracket assembly, a vacuum cavity and a target taking and changing mechanism, wherein the vacuum cavity is arranged on the mounting bracket assembly and comprises at least two movably connected vacuum chamber bodies, and a target holder for mounting a target is arranged in the vacuum cavity; the target taking and changing mechanism comprises a target cabin for placing a target and a target pushing mechanism, and the target pushing mechanism is movably connected to the target cabin; the target taking and changing mechanism is used for pushing the target piece in the target cabin to the target holder. The isotope production device has the advantages that the integral structure is simple through the design of the vacuum cavity of the open-close structure, the target taking and changing mechanism is simple in structure, automatic target taking and changing is realized, the safety of staff is ensured, and the production efficiency is improved.

Description

Isotope production device

Technical Field

The utility model relates to the technical field of isotope production, in particular to an isotope production device.

Background

Parity is commonly used in the fields of medical use, science, industry, etc. At present, isotopes can be produced by using an accelerator, namely the accelerator accelerates beam current with certain power and acts the beam current on targets of different elements or isotopes, and a series of nuclear reaction processes occur in the targets to obtain various target isotope products for utilization.

There are a number of problems with current accelerators for isotope production. For example, in the nuclear physics experiments, because different nuclear reaction mechanisms can occur between the beam current provided by the accelerator and different target materials, when the research targets are different, the target materials are required to be replaced constantly and frequently, and most irradiation experiment processes need to be performed in a vacuum environment, meanwhile, the beam current power density is high, the temperature of the target materials and the temperature of the containing materials are high, and forced cooling heat exchange is required by an external refrigeration medium, so that the time for waiting for cooling the target part before manual target replacement is long. Meanwhile, a series of radionuclides can be generated in the target material after beam irradiation, alpha, beta and gamma rays can be emitted spontaneously, and certain shielding measures are needed in the process of target disassembly, replacement and transportation. Therefore, the existing target device needs to wait for a long time when taking and changing the target, so that the activity of the target is reduced to a level which can be operated by personnel, and then the target is taken and changed manually or manually by means of a simple tool. So that the conventional isotope accelerator causes time cost increase and also causes experimenters to be irradiated to influence body health.

In addition, at present, some isotope production equipment realizes the disassembly and the assembly of a target piece in an integrated vacuum cavity through a mechanical claw, but the mechanical claw of the isotope production equipment is generally complex in structure and large in integral size for adapting to the integrated vacuum cavity.

In summary, it is necessary to provide an automated apparatus with a simplified structure, which has a function of automatically picking and placing targets on the basis of completing isotope production.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an isotope production device, which comprises a vacuum cavity with an open-close structure and a target taking and changing mechanism for disassembling and assembling a target part of the vacuum cavity.

In order to achieve the above object, the present utility model provides the following technical solutions:

the isotope production device comprises a mounting bracket assembly, a vacuum cavity and a target taking and changing mechanism, wherein the vacuum cavity is arranged on the mounting bracket assembly and comprises at least two movably connected vacuum chamber bodies, and a target holder for mounting a target is arranged in the vacuum cavity;

the target taking and changing mechanism comprises a target cabin for placing a target and a target pushing mechanism, and the target pushing mechanism is movably connected to the target cabin; the target pushing mechanism is used for pushing the target in the target cabin to the target holder.

Preferably, the target taking and changing mechanism further comprises a target cabin moving mechanism, the target cabin moving mechanism is connected with the target cabin, and the target cabin moving mechanism drives the target cabin to move outside and inside the vacuum cavity.

Preferably, the mounting bracket component is provided with a target taking and changing bracket, and the target taking and changing bracket is provided with a moving track;

the target cabin moving mechanism comprises a target cabin cylinder and a piston rod which are arranged on the moving track;

the target cabin is also connected with a target cabin plate, and the target cabin is movably connected with the piston rod through the target cabin plate.

Preferably, at least one vacuum chamber body is fixedly connected with the mounting bracket assembly, and the other vacuum chamber body is movably connected with the mounting bracket assembly.

Preferably, the vacuum chamber body comprises a layer of polytetrafluoroethylene and a layer of lead.

Preferably, the transfer mechanism further comprises a transfer assembly and a shielding tank for loading old targets, wherein the transfer assembly comprises a first transfer rail, and the shielding tank is movably connected to the first transfer rail.

Preferably, the shielding tank further comprises a second transfer assembly for transporting the shielding tank in a vertical direction, and the second transfer assembly is vertically connected with the first transfer rail.

Preferably, the transfer mechanism further comprises a cover opening and closing mechanism for controlling the opening and closing of the shielding tank, and the cover opening and closing mechanism is arranged on the first transfer track.

Preferably, the cover opening and closing mechanism comprises an opening and closing plate, wherein the opening and closing plate is provided with an opening end, and the opening end is in a vertex angle structure; the shielding tank comprises a tank body and a cover body movably connected with the tank body, wherein the cover body is far away from the tank body along with the shielding tank approaching to the cover opening end.

Preferably, the vacuum chamber further comprises an intermediate piece for transferring the target piece to the shielding tank, wherein the intermediate piece is arranged below the vacuum chamber.

Based on the technical scheme, the utility model has the following technical effects:

(1) The structure is simplified, the operation stability is improved, and the target is convenient to disassemble and assemble. The utility model provides an isotope production device, wherein a vacuum cavity comprises a movably connected vacuum chamber body, a target holder is arranged in the vacuum cavity, and when the vacuum chamber body is far away from the vacuum chamber body, the target holder in the vacuum cavity is exposed, so that a target taking and replacing mechanism can conveniently detach and replace an old target on the target holder. Compared with isotope production equipment with an integrated vacuum cavity, the vacuum cavity with the open-close structure is combined with the target taking and changing mechanism, so that the design difficulty of the target taking and changing mechanism is reduced, the occupied area is greatly reduced, the overall structure is more simplified, and the running stability and the operation reliability are improved.

(2) Realizing the function of automatically taking and changing targets and ensuring the safety of staff. The target taking and changing mechanism in the isotope production device can automatically take and change the target when the vacuum cavity is opened, and the old target piece is detached and the new target piece is installed, so that manual operation is not needed in the target taking and changing process, and the safety of staff is ensured. Further, the transfer mechanism is further arranged for transporting the detached old target, so that the damage to the health of workers is further reduced, the transfer mechanism is easy to remotely control, and the operation process is safe and stable.

(3) And the production efficiency is improved. The target holder in the isotope production device provided by the utility model is also provided with the micro-channel structure for radiating the target, so that the target is prevented from being damaged under the action of high temperature, and meanwhile, the target holder is combined with the automatic target taking and changing mechanism, so that the time for cooling and disassembling the target is shortened, and the isotope production efficiency is effectively improved.

Drawings

Fig. 1 is a schematic structural view of an isotope production apparatus of the present utility model.

Fig. 2 is a cross-sectional view of the isotope production apparatus of the present utility model.

Fig. 3 is a schematic structural view of the target taking and changing mechanism of the present utility model.

Fig. 4 is a schematic structural view of the transfer mechanism of the present utility model.

Fig. 5 is a schematic view showing a closed state of the cask according to the present utility model.

Fig. 6 is a schematic view showing a structure of the open state of the cask according to the present utility model.

Reference numerals:

100 mounting bracket assembly, 11 target taking and changing bracket, 111 moving track, 12 fixing bracket,

200 vacuum chamber,

300 a target taking and changing mechanism,

20 vacuum chamber body, 201 polytetrafluoroethylene layer, 202 lead shielding layer, 21 target holder, 22 beam interface, 23 fixing plate, 24 vacuum chamber driving mechanism, 25 guide rail,

30 target cabin, 301 first cabin, 302 second cabin, 303 opening, 304 target cabin plate, 31 target pushing mechanism, 311 target pushing block, 312 target pushing cylinder, 32 target cabin moving mechanism, 321 target cabin cylinder, 322 piston rod,

400 transfer mechanism, 41 first transfer subassembly, 411 first transfer track, 412 transfer dolly, 413 transfer drive assembly, 42 shielding can, 421 jar body, 422 lid, 423 bearing, 424 handle mechanism, 43 open and shut lid mechanism, 431 open and shut board, 432 open and shut lid support, 433 open end, 44 middleware, 45 second transfer subassembly, 451 second transfer track.

Detailed Description

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Example 1

Fig. 1 is a schematic diagram showing a structure of an isotope production apparatus in this embodiment. As shown in fig. 1, the present embodiment provides an isotope production apparatus including a mounting bracket assembly 100, and a vacuum chamber 200 and a target changing mechanism 300 provided on the mounting bracket assembly 100. Wherein, the vacuum cavity 200 adopts an open-close structure, when the vacuum cavity 200 is opened, the target taking and changing mechanism 300 is used for disassembling and updating the target piece positioned on the target support 21 in the vacuum cavity 200, thereby realizing the function of automatically taking and changing targets.

Specifically, fig. 2 shows a cross-sectional view of an isotope production apparatus of the present embodiment, and reference is made to fig. 1 and 2. In this embodiment, the vacuum chamber 200 is cylindrical and is connected to the mounting bracket assembly 100 in a horizontal structure, and a target holder 21 for mounting a target is provided inside the vacuum chamber 200. The vacuum chamber 200 is provided with a beam interface 22 on a side surface through which a central axis passes, and the beam interface 22 is welded with a bellows and a flange for connection with a beam line pipe. Thus, the beam direction acting on the target coincides with the central axis of the vacuum chamber 200. The target holder 21 is disposed facing the beam interface 22 so that the beam acts on the target to produce isotopes.

In particular, in the present embodiment, the vacuum chamber 200 includes two movably connected vacuum chamber bodies 20. The vacuum chamber bodies 20 are tightly connected together to form a vacuum chamber body 200, and the interior of the vacuum chamber body forms a vacuum chamber under the action of a vacuum pumping system to provide an environment required for isotope production. One of the vacuum chamber bodies 20 is fixed to the mounting bracket assembly 100, and the other vacuum chamber body 20 is movably connected to the mounting bracket assembly 100.

As shown in fig. 2, a fixing plate 23 is provided on the left side of the mounting bracket assembly 100, and one of the vacuum chamber bodies 20 is connected to the fixing plate 23; the right side of the mounting bracket assembly 100 is provided with a vacuum chamber driving mechanism 24 connected with another vacuum chamber body 20. The vacuum chamber driving mechanism 24 includes a cylinder, a cylinder fixing bracket, and a piston rod 322, and the cylinder is connected with another vacuum chamber body 20 through the piston rod 322.

Further, as shown in fig. 1, the mounting bracket assembly 100 is provided with a guide rail 25, the guide rail 25 is provided at the front and rear sides of the vacuum chamber 200, and the other vacuum chamber body 20 is movably connected to the guide rail 25. Under the driving action of the vacuum cavity driving mechanism 24, the other vacuum chamber body 20 moves left and right along the guide rail 25, and forms an open-close structure with one of the vacuum chamber bodies 20. Compared with an integrated vacuum cavity, the open-close type vacuum cavity 200 reduces the design difficulty of the corresponding target taking and changing mechanism 300, improves the operation stability, and facilitates the installation and the disassembly of the target.

Of course, it is understood that the structure of the vacuum chamber 200 is not specifically limited herein. In some embodiments, the vacuum chamber body 20 is not limited to two vacuum chamber bodies, and the vacuum chamber bodies 20 can be movably connected to the mounting bracket assembly 100, and the specific structure can be modified by those skilled in the art.

Fig. 3 is a schematic diagram of a target taking and changing mechanism 300 in the present embodiment. As shown in fig. 3, the target changing mechanism 300 includes target pods 30 and 31. The target pod 30 includes a first pod 301 and a second pod 302. In this embodiment, the first cabin 301 is vertically disposed, the second cabin 302 is horizontally disposed, the first cabin 301 is vertically connected to the middle of the second cabin 302, and the first cabin 301 and the second cabin 302 are both provided with openings 303. When in use, a new target is placed in the opening 303 above the first cabin 301, and can enter the second cabin 302 for temporary storage under the action of the target pressing cylinder, or can fall into the second cabin 302 for temporary storage under the action of gravity. When the target is required to be mounted, a new target is moved by the target pushing mechanism 31 until the target chamber 30 is pushed out, and mounted on the backing plate 21. Wherein, the target pushing mechanism 31 comprises a target pushing cylinder 312 and a target pushing block 311 connected with the target pushing cylinder 312. Referring to fig. 1 and 3 in combination, in the present embodiment, the vacuum chamber 200 is located at the left side of the second chamber 302, the target pushing block 311 is located at the right side of the second chamber 302, and the target pushing block 311 moves leftwards under the action of the target pushing cylinder 312, pushes the target temporarily stored in the second chamber 302, and mounts the target to the backing plate 21.

Further, in order to facilitate accurate mounting of the target onto the backing plate 21, the target taking and changing mechanism 300 further includes a target chamber moving mechanism 32, and the target chamber moving mechanism 32 is used to drive the target chamber 30 to move. Specifically, referring to fig. 1 and 3, the mounting bracket assembly 100 further includes a target taking and changing bracket 11, and the target taking and changing bracket 11 is transversely arranged on the front side and the rear side of the vacuum cavity 200 and above the vacuum cavity 200. The extending direction of the target-taking and changing bracket 11 is perpendicular to the moving direction of the vacuum chamber body 20. The target taking and changing bracket 11 is provided with a moving track 111. Referring to fig. 3, the target chamber moving mechanism 32 includes a target chamber cylinder 321 and a piston rod 322, and the target chamber cylinder 321 is connected to the target chamber 30 through the piston rod 322 and drives the target chamber 30 to move.

Further, the target taking and changing mechanism 300 further comprises a target cabin board 304, the target cabin 30 is arranged on the target cabin board 304, the target cabin board 304 is connected with a sliding block on the other side of the target cabin 30, the target cabin board 304 is arranged on the moving track 111 through the sliding block, a sliding pair is formed between the target cabin board 304 and the moving track 111, and meanwhile, the target cabin board 304 is connected with the piston rod 322. The target chamber 30 and the target pushing mechanism 31 move inside and outside the vacuum chamber 200 along the movement rail 111 by the driving action of the target chamber moving mechanism 32.

In use, the height and position of the target-taking and changing bracket 11 are adjusted so that the opening 303 of the second chamber 302 for outputting a new target corresponds to the position of the target holder 21 in the vacuum chamber 200. When the vacuum chamber body 20 is far away from the target holder 21 exposed out of the vacuum chamber 200, the target pushing mechanism 31 pushes the new target temporarily stored in the second chamber 302 onto the target holder 21, so as to realize the installation of the new target. If the target holder 21 is provided with an old target, the new target in the target chamber 30 can push the original old target on the target holder 21 while moving to the target holder 21, so that the old target is separated from the target holder 21, and the old target is detached and the new target is replaced and installed at the same time. Further, the isotope production apparatus in this embodiment further includes a transfer mechanism 400, and the removed old target can be transported by the transfer mechanism 400.

In particular, referring to fig. 1 and 3, in the present embodiment, the mounting bracket assembly 100 is further provided with a fixing bracket 12, and the fixing bracket 12 is separately disposed on the front and rear sides of the other vacuum chamber body 20 and is connected to the target taking and changing bracket 11, so as to fix the target taking and changing mechanism 300 above the vacuum chamber 200. The fixed bracket 12 moves with the movement of the other vacuum chamber body 20. The target taking and changing bracket 11 with the adjusted position and the target taking and changing mechanism 300 fixed on the target taking and changing bracket 11 are kept corresponding to the position of the target holder 21, so that the disassembly and the assembly of the target piece can be accurately completed.

In summary, the present embodiment provides an isotope production apparatus that can achieve automated detachment and installation of targets. Meanwhile, the vacuum cavity 200 of the isotope production device adopts a segmented opening and closing structure, the target taking and changing mechanism 300 adopts the target cabin 30 and the target pushing mechanism 31, and the isotope production device has the characteristics of simple structure, stable operation and improvement of operation reliability while the automatic disassembly of the target is completed.

It should be noted that the shape of the vacuum chamber 200 is not limited in this embodiment, and in some embodiments, the shape of the vacuum chamber 200 may be changed accordingly.

Example 2

Referring to fig. 1 to 3, an isotope production apparatus of this embodiment is the same as the isotope production apparatus of embodiment 1 in its entirety, and is further supplemented on the basis of embodiment one, and the same points as embodiment 1 are referred to in this embodiment as embodiment 1. The improvements are further described below.

Referring to fig. 1, in order to further optimize the process of automatically assembling and disassembling the target, an isotope production apparatus in this embodiment further includes a transfer mechanism 400, wherein the transfer mechanism 400 includes a first transfer assembly 41 and a shielding can 42, the first transfer assembly 41 includes a first transfer rail 411, and the shielding can 42 is movable along the first transfer rail 411.

Specifically, fig. 4 shows a schematic structural diagram of the transfer mechanism 400. Referring to fig. 1 and 4, the first transferring assembly 41 is disposed below the vacuum chamber 200, and includes a first transferring rail 411, a transferring trolley 412 for loading the shielding cans 42 is disposed on the first transferring rail 411, and the transferring trolley 412 is further connected with a transferring driving assembly 413. The transfer trolley 412 is movable along the first transfer track 411 under the influence of the transfer drive assembly 413. As shown in fig. 4, in the present embodiment, the conveyance driving assembly 413 is provided at the rightmost end of the first conveyance rail 411.

The transfer trolley 412 includes a wheel, a fixing base, and a positioning block for limiting the shielding can 42, wherein the wheel is connected with the first transfer rail 411, and the fixing base is connected with the transfer driving assembly 413. The transfer drive assembly 413 generally includes a transfer cylinder and a piston rod coupled to a fixed mount.

Further, in order to facilitate loading of the detached target into the shielding can 42, the transfer mechanism 400 further includes a cover opening and closing mechanism 43, and the cover opening and closing mechanism 43 is disposed on the first transfer rail 411. The cover opening and closing mechanism 43 includes a cover opening and closing bracket 432 connected to the first transfer rail 411, the cover opening and closing brackets 432 are separately provided on both sides of the first transfer rail 411, and are provided with opening and closing plates 431. The opening plate 431 is provided with an opening end 433, and the opening end 433 is located at an end far away from the transfer driving assembly 413 and is close to the transfer trolley 412 and the shielding can 42. In this embodiment, the cover opening end 433 has a top angle structure, that is, the cover opening end 433 of the opening plate 431 is provided with an inclined plane, so that an included angle is formed, and the whole of the opening plate 431 is similar to a trapezoid structure, so that the force is applied to the shielding can 42, and the cover is opened.

Fig. 5 and 6 are schematic structural views showing the closed and open states of the shield can 42, respectively. Referring to fig. 5 and 6, the shielding can 42 includes a can body 421 and a cover body 422 movably connected to the can body 421, wherein the cover body 422 is connected to the can body 421 through a bearing 423. In addition, the shielding can 42 in this embodiment is further provided with a handle structure 424 for simultaneously connecting the cover 422 and the can 421, and the bearing 423 and the handle structure 424 can enable the cover 422 to be opened and closed at a certain angle.

Referring to fig. 1 to 6 in combination, when it is required to detach a target and install a new target, the vacuum chamber body 20 is separated from each other, the vacuum chamber 200 is opened, the transfer cylinder is operated, and the transfer trolley 412 is pulled by the piston rod to move the transfer trolley 412 in the direction of the opening and closing cover mechanism 43. Along with the contact between the shielding can 42 and the opening end 433 of the cover opening and closing mechanism 43, the bearing 423 moves upward along the inclined plane under the top angle action of the opening end 433, so that the cover 422 moves relative to the can 421 until the opening angle between the cover 422 and the can 421 reaches the maximum. When the old target is moved away from the backing plate 21 by the target pushing mechanism 31, it can fall into the open cask 42. When the vacuum chamber body 20 is close to the vacuum chamber body 200, the transfer driving assembly 413 drives the transfer trolley 412 to be far away from the cover opening and closing mechanism 43, the bearing 423 moves downwards along the inclined plane, and meanwhile, the cover 422 is closed with the tank 421 under the action of self gravity. The cover opening and closing mechanism 43 can realize automatic opening and closing of the shielding tank 42, and has simple structure and reliable opening and closing process.

Further, as shown in fig. 2, in order to optimize the process of the old target entering the shielding can 42, in this embodiment, an intermediate piece 44 is further disposed below the vacuum chamber 200, and the intermediate piece 44 is a funnel. The old target piece falls into the funnel freely after being separated from the target holder 21 and falls into the shielding tank 42 under the guiding action of the funnel, so that the accuracy of the old target holder 21 during loading is ensured. Of course, the structure of the intermediate member 44 is not limited to a hopper, but may be other mechanisms having guiding or conveying functions. In addition, the opening and closing plate 431 may further be connected to a positioning member for positioning the opening and closing position of the shielding can 42.

It should be noted that, since the target material after beam irradiation generates a series of radionuclides, certain shielding measures need to be taken. In this embodiment, the shielding can 42 includes a lead layer and a stainless steel layer on the outside of the lead layer.

Further, returning to fig. 4, the transfer mechanism 400 further includes a second transfer assembly 45 connected to the first transfer assembly 41, the second transfer assembly 45 includes a second transfer rail 451, the second transfer rail 451 is vertically connected to the first transfer rail 411, the first transfer rail 411 is horizontally disposed, and the second transfer rail 451 can be fixed to a wall and integrally extends in a vertical direction. The second transfer track 451 is located on a side of the first transfer track 411 remote from the transfer drive assembly 413. The top of the second transferring track 451 is provided with a hoisting motor as a lifting power structure, and meanwhile, the second transferring track 451 is further provided with a steel wire rope for connecting the motor with the transferring trolley 412, so that the transferring trolley 412 moves in the vertical direction. In use, the transfer trolley 412 and the cask 42 may be transported to the first transfer rail 411 by a hoist, and similarly, the cask 42 may be transported away from the vacuum chamber by a hoist. Remote control of the transportation of the cask 42 is achieved by the second transport assembly 45, completing transport of the cask 42 and target within the cask 42 between the production area and the secure location. Meanwhile, the transfer process is stable in operation and reliable in structure.

In summary, this embodiment improves the isotope production apparatus on the basis of embodiment 1, and further provides a transfer mechanism 400, where the transfer mechanism 400 moves the shielding can 42, stores the old target and shields the old target, and automates the storage process after the old target is disassembled. The isotope production device integrates the functions of target disassembly, target replacement, shielding storage, transportation and automation, has a compact structure, and ensures the safety of staff.

Example 3

This embodiment will be further described on the basis of embodiment 1.

As shown in fig. 2, in order to further ensure the safety of the staff, the vacuum chamber 200 adopts an interlayer water jacket type, and the vacuum chamber 200 is provided with at least one radiation protection layer. In this embodiment, the vacuum chamber 200 is provided with two radiation emitting layers, including a polytetrafluoroethylene layer 201 and a lead shielding layer 202. A polytetrafluoroethylene layer 201 surrounds the lead shield 202 and the backing plate 21 is in a vacuum chamber formed within the lead shield 202. The polytetrafluoroethylene layer 201 and the lead shielding layer 202 can reduce neutron and photon doses generated by isotope production in the environment outside the vacuum cavity 200, and better protect peripheral equipment and terminal periphery.

In addition, because of the high beam power density, the target and surrounding components are typically at a high temperature, thus requiring cooling heat exchange. In this embodiment, the isotope production apparatus further includes a heat exchange mechanism. The heat exchange mechanism comprises a micro-channel structure arranged on the back surface of the target support 21, and the micro-channel structure can be used for cooling medium circulation, has a high heat exchange coefficient and protects the target from being damaged by high temperature. The heat exchange mechanism further comprises a heat exchange loop, the heat exchange loop comprises a water chilling unit, a waterway pipeline, a valve, a sensor and the like, the heat exchange loop is connected with the inside of the vacuum cavity 200 and the target support 21, and the heat exchange mechanism aims to control the temperature of the inside of the vacuum cavity 200 and the temperature of the target support 21, and take out redundant heat through a cooling medium, so that the protection device works normally.

In addition, it is understood that the vacuum pumping system may include a structure such as an air compressor, a vacuum pump, and an air pressure detector in order to form a vacuum environment inside the vacuum chamber 200, and the vacuum chamber 200 may be provided with a structure such as a temperature sensor in order to optimize heat dissipation.

The foregoing is merely illustrative and explanatory of the utility model as it is described in more detail and is not thereby to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.

Claims

1. The isotope production device is characterized by comprising a mounting bracket assembly, a vacuum cavity and a target taking and changing mechanism, wherein the vacuum cavity is arranged on the mounting bracket assembly and comprises at least two movably connected vacuum chamber bodies, and a target holder for mounting a target is arranged in the vacuum cavity;

2. The isotope production apparatus of claim 1, wherein the target removal and exchange mechanism further includes a target pod movement mechanism coupled to the target pod, the target pod movement mechanism driving the target pod to move inside and outside the vacuum chamber.

3. The isotope production apparatus of claim 2, wherein the mounting bracket assembly is provided with a target-changing bracket, the target-changing bracket being provided with a moving track;

4. The isotope production apparatus of claim 2, wherein at least one of the vacuum chamber bodies is fixedly coupled to the mounting bracket assembly and another of the vacuum chamber bodies is movably coupled to the mounting bracket assembly.

5. The isotope production apparatus of claim 1, wherein the vacuum chamber body includes at least one radiation protective layer.

6. The isotope production apparatus of any one of claims 1-5, further comprising a transfer mechanism including a first transfer assembly including a first transfer rail and a cask for loading an old target, the cask being movably coupled to the first transfer rail.

7. The isotope production apparatus of claim 6, further comprising a second transfer assembly for transporting casks in a vertical direction, the second transfer assembly coupled to the first transfer track.

8. The isotope production apparatus of claim 6, wherein the transfer mechanism further includes a cover opening and closing mechanism for controlling opening and closing of the cask, the cover opening and closing mechanism being disposed on the first transfer track.

9. The isotope production apparatus of claim 8, wherein the lid opening and closing mechanism includes an opening and closing plate, the opening and closing plate having an open end, the open end being in a top angle configuration; the shielding tank comprises a tank body and a cover body movably connected with the tank body, wherein the cover body is far away from the tank body along with the shielding tank approaching to the cover opening end.

10. The isotope production apparatus of claim 6, further comprising an intermediate member for delivering a target member to the cask, the intermediate member disposed below the vacuum chamber.