Multi-target-position targeting device capable of being rapidly switched

Abstract

The invention provides a multi-target-position target shooting device capable of being quickly switched, which comprises an accelerator connecting part used for being connected with an accelerator, a linear transmission assembly is fixed on the accelerator connecting part, and a plurality of target ejection assemblies comprising targets are mounted on the linear transmission assembly. The target ejection assemblies comprise a liquid target ejection assembly and / or a gas target ejection assembly, and each target ejection assembly comprises a target butt joint device capable of pushing a target to be in butt joint with the transition flange assembly; the multi-target-position target shooting device further comprises a transition flange assembly, and the linear transmission assembly has the function of controlling different target ejection assemblies to be aligned with the transition flange assembly. According to the multi-target-position target shooting device capable of being rapidly switched, by installing the multiple target positions, different target positions can be rapidly switched for target shooting, during switching, an operator only needs to operate outside an accelerator shielding body, the target positions can be switched, the operator does not need to enter a radiation area in the shielding body, and the risk of the operator is reduced.

Description

Technical Field

[0001] The invention belongs to the field of accelerator equipment, in particular to accelerator target technology; and specifically relates to a multi-target shooting device capable of rapid switching. Background Art

[0002] In traditional accelerator target systems, one beam outlet of the accelerator can generally only install one target. Solid targets, liquid targets and gas targets can be installed according to actual needs and the required nuclides. Solid targets need to be dismantled and replaced after each target shooting, while liquid targets and gas targets directly transfer nuclides to the target body through nuclide pipelines for target shooting. There is no need to frequently replace targets. The target only needs to be dismantled when the target body fails or needs to be replaced with a new one. Liquid targets and gas targets do not need to be replaced frequently, so they are more widely used.

[0003] In the specific process of target replacement, after the target shooting is completed, the shielding body is opened to remove the old target and install the new target. The process is cumbersome and the installer is subject to greater metrological risks. When the target body fails, it can only switch to other beam outlets to continue the target shooting. When the target body dose is reduced to an acceptable range for the operator, the target can be removed and installed with a new target. The waiting time is long and the switching efficiency is low.

[0004] Target switching requires manual operation by the operator, and when the target has a radioactive dose, the operator is at high risk. In addition, the process of removing and installing the target is cumbersome and inefficient, which further increases the risk to the operator and may also reduce the yield of target nuclides. Summary of the invention

[0005] In order to overcome the defects of the prior art, the present invention discloses a multi-target shooting device which can be switched quickly.

[0006] The multi-target-position shooting device capable of rapid switching of the present invention comprises an accelerator connecting component for connecting with an accelerator, a linear transmission assembly being fixed on the accelerator connecting component, a plurality of target ejection assemblies including targets being mounted on the linear transmission assembly, the target ejection assemblies comprising liquid target ejection assemblies and / or gas target ejection assemblies, each target ejection assembly comprising a target docking device capable of pushing the target to dock with a transition flange assembly; the multi-target-position shooting device further comprises a transition flange assembly fixed on an accelerator lead-out tube, the function of the linear transmission assembly being to control different target ejection assemblies to align with the transition flange assembly; and a controller for controlling the linear transmission assembly and the target ejection assembly is further comprised.

[0007] Preferably, the accelerator connecting component includes a vertical connecting plate to which the linear transmission assembly is fixed, and a mounting base plate connected between the vertical connecting plate and the accelerator.

[0008] Preferably, the linear transmission assembly includes a seat plate, a pair of guide rail support plates are fixed on the seat plate, a first linear guide is installed between the pair of guide rail support plates, a slider is slidably installed on the first linear guide, and the target ejection assembly is installed at different heights of the slider; the linear transmission assembly also includes a slider driving device for driving the slider.

[0009] Preferably, the slider driving device includes a screw passing through the slider, and both ends of the screw are respectively rotatably connected to a screw fixing seat located at the top of the guide rail support plate and a screw support seat located at the bottom of the guide rail support plate. The screw passes through the screw support seat and is connected to the servo motor through a coupling.

[0010] Preferably, the linear transmission assembly further comprises a limiting device, which comprises shading plates installed on both sides of the slider, and photoelectric switches fixed at different heights on the guide rail support plate, and the controller is connected to the photoelectric switch signal.

[0011] Preferably, the target docking device of the target ejection assembly includes an ejection connecting plate, a second linear guide is installed on the ejection connecting plate, a target ejection rod is slidably installed on the second linear guide, a cylinder with a piston end connected to the target ejection rod is fixedly installed on the side of the ejection connecting plate away from the second linear guide, a target is installed on the end of the target ejection rod away from the cylinder, the target includes a target material cavity and a cooling cavity connected to the target material cavity, and the cooling cavity is provided with a target end face.

[0012] Preferably, the target further comprises a water-cooled cover plate connected to the target material cavity, two quick-connect connectors are arranged on the surface of the water-cooled cover plate, and a cooling pipeline connecting the two quick-connect connectors is arranged inside the water-cooled cover plate body.

[0013] Preferably, a speed control valve is installed on the cylinder.

[0014] Preferably, the transition flange assembly comprises a butt flange for connecting to the target, a transition flange connecting the butt flange and an insulating ring, and an insulating ring, and sealing rings are installed at the inlets of the butt flange and the transition flange.

[0015] The multi-target shooting device capable of rapid switching of the present invention can realize rapid switching of different target shooting positions by installing multiple target positions. When switching, the operator only needs to operate outside the shielding body of the accelerator to realize the switching of the target positions without entering the radiation area inside the shielding body, thereby reducing the risk of the operator. The target position connection device of the present invention has a simple structure. When the multi-target device has a target body failure or needs to be replaced, it can be conveniently disassembled from the accelerator. The later disassembly and maintenance are convenient and fast, and the exposure time of the maintenance personnel to the radioactive dose is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of a specific implementation of the multi-target shooting device of the present invention; Figure 2 It is a schematic diagram of a specific implementation of the linear transmission assembly of the present invention; Figure 3 It is a schematic diagram of a specific implementation of the liquid target ejection assembly of the present invention; Figure 4 It is a schematic diagram of a specific implementation of the transition flange assembly of the present invention; Figure 5 A schematic diagram of a specific implementation of the gas target ejection assembly of the present invention; The names of the reference numerals in the figure are: 1. Linear transmission assembly; 2. Liquid target ejection assembly; 3. Gas target ejection assembly; 4. Transition flange assembly; 5. Vertical connecting plate; 6. Mounting base plate; 10. Servo motor; 11. Seat plate; 12. Guide rail support plate; 13. Shading plate; 14. Photoelectric switch; 15. First linear guide; 16. Screw support seat; 17. Slider; 18. Screw; 19. Screw fixing seat; 20. Coupling; 21. Ejection connecting plate; 22. Cylinder; 23. Speed ​​control valve; 24. Target ejection rod; 25. Second linear guide; 26. Water-cooled cover plate; 27. Target cavity; 28. Cooling cavity; 41. Docking flange; 42. Sealing ring; 43. Transition flange; 44. Insulating ring; 45. Countersunk screw. DETAILED DESCRIPTION

[0017] The specific implementation modes of the present invention are further described in detail below.

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely explained below in combination with the specific implementation methods of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The fast-switching multi-target shooting device of the present invention is as follows: Figure 1As shown, it includes an accelerator connecting component for connecting with an accelerator, a linear transmission component 1 is fixed on the accelerator connecting component, and a plurality of target ejection components including targets are installed on the linear transmission component, and the target ejection components include a liquid target ejection component 2 and / or a gas target ejection component 3, and each target ejection component includes a target docking device that can push the target to dock with a transition flange component; the multi-target shooting device also includes a transition flange component 4 fixed on the accelerator lead-out tube, the function of the linear transmission component is to control different target ejection components to align with the transition flange component, and also includes a controller for controlling the linear transmission component and the target ejection component.

[0020] Figure 1 In the specific embodiment shown, the accelerator connecting component includes a vertical connecting plate 5 fixed with a linear transmission component, and a mounting base plate 6 connected between the vertical connecting plate and the accelerator, and the entire multi-target shooting device is fixedly connected to the accelerator through the mounting base plate 6.

[0021] The installation position of the transition flange assembly enables it to be aligned with the accelerator lead-out tube used for target shooting. The controller adjusts the linear transmission assembly so that the liquid target ejection assembly or the gas target ejection assembly that needs to be shot moves on the linear transmission assembly to a position aligned with the transition flange. The controller pushes the target to dock with the transition flange, and the accelerator shoots the target toward the target ejection assembly through the transition flange.

[0022] like Figure 2 A specific embodiment of the linear transmission assembly is shown in the figure, wherein the linear transmission assembly includes a base plate 11, a pair of guide rail support plates 12 are fixed on the base plate, a first linear guide 15 is installed between the pair of guide rail support plates 12, a slider 17 is slidably installed on the first linear guide, and the target ejection assembly is installed at different heights of the slider 17; the linear transmission assembly 1 also includes a slider driving device for driving the slider.

[0023] The slider driving device drives the slider to move in the vertical direction along the first linear guide rail, so that the target ejection assembly that needs to be shot among the target ejection assemblies located at different heights of the slider moves to the same height as the transition flange assembly, and pushes the target to dock with the transition flange assembly for shooting.

[0024] like Figure 2 As shown, the slider driving device includes a lead screw 18 passing through the slider, and the two ends of the lead screw 18 are rotatably connected to the lead screw fixing seat 19 located at the top of the guide rail support plate and the lead screw support seat 16 located at the bottom of the guide rail support plate, respectively. The lead screw 18 passes through the lead screw support seat 16 and is connected to the servo motor 10 through the coupling 20. The servo motor 10 drives the lead screw 18 to rotate through the coupling 20, and the slider itself is constrained by the first linear guide so that it can only move up and down along the first linear guide to realize the lifting and lowering of the slider 17.

[0025] In a preferred embodiment, the linear transmission assembly further includes a limiting device for detecting the moving position of the slider and limiting the lifting interval of the slider, such as Figure 2 As shown, the limiting device includes shading plates 13 installed on both sides of the slider, and photoelectric switches 14 fixed at different heights on the guide rail support plate.

[0026] Figure 2 In the specific embodiment shown, three photoelectric switches 14 are installed, which respectively calibrate the upper limit, starting point and lower limit of the slider movement from top to bottom. When the shading plate 13 is driven by the slider 17 to move to a certain photoelectric switch, the light path of the photoelectric switch is blocked, so that the photoelectric switch sends a signal to the controller, prompting the slider to move to the photoelectric switch; the photoelectric switch can be implemented by pairing an infrared transmitting tube and an infrared receiving tube.

[0027] like Figure 3 A specific embodiment of a liquid target ejection assembly is shown in the figure, the liquid target ejection assembly includes an ejection connecting plate 21, a second linear guide 25 is installed on the ejection connecting plate, a target ejection rod 24 is slidably installed on the second linear guide, a cylinder 22 with a piston end connected to the target ejection rod 24 is fixedly installed on the side of the ejection connecting plate 21 away from the second linear guide 25, a liquid target is installed on the end of the target ejection rod 24 away from the cylinder, the liquid target includes a target material cavity 27 and a cooling cavity 28 connected to the target material cavity, and the cooling cavity is provided with a target end face.

[0028] The ejection connecting plate 21 is used to be fixedly connected to the slider 17 so that the target ejection assembly is fixed on the slider. When in use, when the target ejection assembly moves to the same height as the transition flange assembly, the control cylinder pushes the target ejection rod to slide along the first linear guide rail, so that the liquid target moves forward and the target end face is connected to the transition flange assembly.

[0029] The liquid target includes a target cavity 27 for placing the target material to be shot, a cooling cavity 28 for maintaining the target material in the target cavity at a relatively low temperature, and a helium cooling cavity generally using helium as a cooling medium. A water-cooled cover plate 26 is provided behind the target cavity for sealing and cooling the target cavity. The surface of the water-cooled cover plate 26 is provided with two quick-plug connectors, and a cooling pipeline connecting the two quick-plug connectors is provided inside the water-cooled cover plate body; it is connected to an external coolant pump through two quick-plug connectors, and coolant is injected into the water-cooled cover plate to achieve circulating cooling of the coolant. The water-cooled cover plate 26 of the liquid target assembly is fixedly connected to the target ejector rod by four screws.

[0030] Figure 3In the specific embodiment shown, a speed control valve 23 is installed on the cylinder 22. For example, an SMC-CDQ2A32M-20DZ-M9PV cylinder from SMC can be used. The speed of the cylinder is controlled by the speed control valve, so that the docking of the target and the transition flange assembly is more accurate and stable.

[0031] The gas target ejection assembly and the liquid target ejection assembly have basically the same structure, and only differ in size. A specific implementation is as follows Figure 5 shown.

[0032] like Figure 4 The figure shows a specific embodiment of the transition flange assembly of the present invention, wherein the transition flange assembly includes a docking flange 41 for connecting to a target, a transition flange 43 connecting the docking flange and an insulating ring, and an insulating ring 44, wherein sealing rings 42 are installed at the inlets of the docking flange and the transition flange; the docking flange is butted against the target end surface of the helium cooling chamber of a gas target or a liquid target, and the contact surface between the docking flange and the target end surface is sealed by an O-ring, and the sealing ring placement groove of the docking flange is a dovetail groove, which is used to prevent the O-ring from falling off due to frequent docking, and the insulating ring can be connected to the beam outlet of the accelerator through a quick connector. Figure 4 In the specific embodiment shown, corresponding screw holes are provided on the docking flange 41, the transition flange 43, and the insulating ring 44, and the countersunk screws 45 are passed through the screw holes to combine the various components to form a docking flange assembly.

[0033] After the shooting is completed, when the target needs to be switched, the cylinder of the target ejection assembly that has completed the shooting is retracted, the target end face is separated from the transition flange, and the linear transmission assembly is controlled to move the target ejection assembly that needs to be shot up and down to align with the transition flange, and the corresponding cylinder is extended to make the target end face of the target dock with the transition flange, and then the shooting starts.

[0034] The multi-target shooting device capable of rapid switching of the present invention can realize rapid switching of different target shooting positions by installing multiple target positions. When switching, the operator only needs to operate outside the shielding body of the accelerator to realize the switching of the target positions without entering the radiation area inside the shielding body, thereby reducing the risk of the operator. The target position connection device of the present invention has a simple structure. When the multi-target device has a target body failure or needs to be replaced, it can be conveniently disassembled from the accelerator. The later disassembly and maintenance are convenient and fast, and the exposure time of the maintenance personnel to the radioactive dose is reduced.

[0035] The foregoing describes various preferred embodiments of the present invention. Unless the preferred implementation modes in various preferred embodiments are obviously self-contradictory or based on a certain preferred implementation mode, various preferred implementation modes can be arbitrarily superimposed and used in combination. The embodiments and specific parameters in the embodiments are only for clearly describing the invention verification process of the inventor, and are not used to limit the patent protection scope of the present invention. The patent protection scope of the present invention shall still be based on its claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-target shooting device capable of rapid switching, characterized in that: The invention comprises an accelerator connection component for connecting to an accelerator, a linear transmission component (1) being fixed on the accelerator connection component, a plurality of target ejection components including targets being mounted on the linear transmission component, the target ejection components including a liquid target ejection component (2) and / or a gas target ejection component (3), each target ejection component including a target docking device capable of pushing the target to dock with a transition flange component (3); the multi-target position shooting device further comprises a transition flange component (4) fixed on the accelerator lead-out tube, the linear transmission component (1) having the function of controlling different target ejection components to align with the transition flange component (4); and a controller for controlling the linear transmission component and the target ejection component.

2. The multi-target shooting device according to claim 1, characterized in that: The accelerator connection component comprises a vertical connection plate (5) on which a linear transmission assembly (1) is fixed, and a mounting base plate (6) connected between the vertical connection plate and the accelerator.

3. The multi-target shooting device according to claim 1, characterized in that: The linear transmission assembly comprises a seat plate (11), a pair of guide rail support plates (12) are fixed on the seat plate, a first linear guide rail (15) is installed between the pair of guide rail support plates (12), a slider (17) is slidably installed on the first linear guide rail, and the target ejection assembly is installed at different heights of the slider; the linear transmission assembly also comprises a slider driving device for driving the slider.

4. The multi-target shooting device according to claim 3, characterized in that: The slider driving device comprises a lead screw (18) passing through the slider (17), the two ends of the lead screw being rotatably connected to a lead screw fixing seat (19) located at the top of the guide rail support plate (12) and a lead screw support seat (16) located at the bottom of the guide rail support plate (12), respectively, and the lead screw (18) passes through the lead screw support seat and is connected to the servo motor (10) via a coupling (20).

5. The multi-target shooting device according to claim 3, characterized in that: The linear transmission assembly also includes a limit device, which includes light shielding plates (13) installed on both sides of the slider, and photoelectric switches (14) fixed at different heights on the guide rail support plate, and the controller is connected to the photoelectric switch signal.

6. The multi-target shooting device according to claim 1, characterized in that: The target docking device of the liquid target ejection assembly comprises an ejection connection plate (21), a second linear guide rail (25) is mounted on the ejection connection plate, a target ejection rod (24) is slidably mounted on the second linear guide rail (25), and a cylinder (22) whose piston end is connected to the target ejection rod is fixedly mounted on a side of the ejection connection plate away from the second linear guide rail (25); A target is mounted on one end of the target ejection rod away from the cylinder (22); the target comprises a target material cavity (27) and a cooling cavity (28) connected to the target material cavity; the cooling cavity is provided with a target end surface.

7. The multi-target shooting device according to claim 6, characterized in that: The target also includes a water-cooled cover plate (26) connected to the target material cavity, wherein two quick-connect connectors are arranged on the surface of the water-cooled cover plate, and a cooling pipeline connecting the two quick-connect connectors is arranged inside the water-cooled cover plate body.

8. The multi-target shooting device according to claim 6, characterized in that: A speed control valve (23) is installed on the cylinder (22).

9. The multi-target shooting device according to claim 1, characterized in that: The transition flange assembly (4) comprises a butt flange (41) for connecting to a target, a transition flange (43) connecting the butt flange and an insulating ring, and an insulating ring (44). The inlets of the butt flange (41) and the transition flange (43) are both provided with sealing rings (42).

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