A reciprocating dynamic solid target device

Abstract

The present invention relates to the technical field of accelerator target structures, and particularly to a reciprocating dynamic solid target device. Its technical solution includes an accelerator cavity, with quick connectors I fixed on both sides of the accelerator cavity; a target body that slides horizontally is installed inside the accelerator cavity, and both ends of the target body are connected to metal bellows, and the two quick connectors I are respectively detachably connected to the two metal bellows; a reciprocating motion device for driving the target body to reciprocate is installed on the accelerator cavity. The present invention can stably drive the target body to reciprocate on the track, enabling the ion beam to bombard different positions on the target surface, making the target surface heat more evenly and extending the service life of the target; a cooling water channel is opened inside the target body, and deionized water is introduced for cooling, which can effectively remove the heat load on the target body and increase the maximum heat load that the target body can withstand.

Description

Technical Field

[0001] The present invention relates to the technical field of accelerator target structures, and particularly to a reciprocating dynamic solid target device. Background Art

[0002] Ion beam bombardment of a target is widely used in an accelerator neutron source system. Taking a compact deuterium-deuterium neutron generator as an example, electrons in the ion source collide with deuterium gas to generate deuterium ions. These ions are accelerated and bombarded onto the target, and collide with deuterium particles in the target to undergo a nuclear fusion reaction to generate neutrons. During this process, while the target body is bombarded by the ion beam, a large amount of high heat load is also brought. If the ion beam bombards the same point on the target surface for a long time, it will not only cause a certain degree of damage to the target body due to uneven heating, but also consume the titanium film that adsorbs deuterium particles at the bombardment point on the target surface, resulting in a decrease in neutron yield. The traditional rotating target uses a motor to drive the target body to rotate. Although it increases the uniformity of heat absorption on the target surface to some extent, due to the vibration characteristics of the motor, the target body cannot rotate smoothly, and the vibration also has a certain impact on other components of the accelerator.

[0003] Therefore, how to ensure that the target body is uniformly heated while enabling the target to move smoothly is a problem to be solved. The present application proposes a reciprocating dynamic solid target device. Summary of the Invention

[0004] The object of the present invention is to address the problem in the background art of how to ensure that the target body is uniformly heated while enabling the target to move smoothly, and to propose a reciprocating dynamic solid target device.

[0005] The technical solution of the present invention: A reciprocating dynamic solid target device, comprising:

[0006] An accelerator cavity, with a quick connector 1 fixed on both sides of the accelerator cavity;

[0007] A target body slidably installed in the accelerator cavity for horizontal movement, with metal bellows connected to both ends of the target body, and the two quick connectors 1 are detachably connected to the two metal bellows respectively;

[0008] A reciprocating motion device is installed on the accelerator cavity for driving the target body to reciprocate. The reciprocating motion device includes a vacuum servo motor fixed on one side of the accelerator cavity. A KF connection port is fixed on one side of the accelerator cavity, and a KF adapter is fixedly installed on the KF connection port. The vacuum servo motor is welded to the KF adapter. A rotating shaft threaded with a moving block is rotatably installed in the accelerator cavity, and the output shaft of the vacuum servo motor is in transmission connection with the rotating shaft;

[0009] On both sides of the moving block, screw nuts are fixed by bolts. The screw nuts are threadedly connected to the rotating shaft. An installation hole is provided on the moving block. The rotating shaft passes through the installation hole, and the inner diameter of the installation hole is larger than the vertical cross-sectional diameter of the rotating shaft.

[0010] Optionally, metal bellows are fixed on both sides of the accelerator cavity. The quick connector one is fixed inside the metal bellows. One end of the metal bellows away from the target is fixed with a quick connector two. The quick connector two is threadedly connected to the metal bellows. The quick connector one abuts against the quick connector two.

[0011] Optionally, a moving block is fixed to the bottom of the target by bolts. A sliding track is slidably penetrated through the moving block. Grooves are provided on the inner walls of both sides of the accelerator cavity. Both ends of the sliding track are slidably connected to the inner walls of the two grooves respectively.

[0012] Optionally, springs are fixed to both ends of the sliding track. The springs are located inside the grooves.

[0013] Optionally, a bearing is fixed to one side of the accelerator cavity away from the KF connection port. One end of the rotating shaft is welded to the inner ring of the bearing.

[0014] Optionally, a protrusion is provided at one end of the rotating shaft away from the bearing, and a circular hole is provided at one end of the rotating shaft. A groove adapted to the protrusion is provided on the output shaft of the vacuum servo motor, and a round hole is provided on the output shaft of the vacuum servo motor. A pin is inserted between the circular hole and the round hole.

[0015] Optionally, the target is made of titanium material. The cross-sectional diameter of the target is 80 - 120 mm, the thickness of the target is 6 - 16 mm, and the target is connected to the moving block by M8 bolts.

[0016] Compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0017] Using a roller screw as the moving platform of the target and a vacuum servo motor as the power device can stably drive the target to reciprocate on the track, enabling the ion beam to bombard different positions on the target surface, making the target surface heat more evenly and extending the service life of the target;

[0018] Cooling water channels are provided inside the target, and deionized water is introduced for cooling, which can effectively remove the heat load on the target and increase the maximum heat load that the target can withstand;

[0019] Using a telescopic bellows as the cooling water pipeline can provide sufficient tension to prevent the cooling water pipeline from breaking when the target moves. Description of the Drawings

[0020] Figure 1 It is a general schematic diagram of the structure of a reciprocating dynamic solid target device;

[0021] Figure 2 It is a schematic diagram of the structure of the target body;

[0022] Figure 3 It is a schematic diagram of the structure of the accelerator cavity;

[0023] Figure 4 It is a schematic diagram of the structure of the reciprocating motion device.

[0024] Reference numerals: 1, accelerator cavity; 2, reciprocating dynamic solid target device; 101, quick connector 1; 102, metal bellows; 103, groove; 104, bearing; 105, KF connection port; 201, bellows; 202, quick connector 2; 203, sliding track; 204, rotating shaft; 205, lead screw nut; 206, moving block; 207, target body; 208, KF adapter; 209, bolt; 210, vacuum servo motor. Specific embodiments

[0025] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Generally, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention.

[0027] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] It should be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances. Embodiment

[0031] As Figure 1 As shown, a reciprocating dynamic solid target device proposed by the present invention includes an accelerator cavity 1, and quick connectors 101 are fixed on both sides of the accelerator cavity 1; one of the quick connectors 101 is connected to the output end of a chiller, and the other quick connector 101 is connected to the chiller. The chiller belongs to the prior art and will not be elaborated here.

[0032] As Figure 1 - Figure 4 As shown, in this embodiment, a target body 207 that moves horizontally is slidably mounted in the accelerator cavity 1. The target body 207 is made of titanium material, the cross-sectional diameter of the target body 207 is 100 mm, the thickness of the target body 207 is 10 mm, and the target body 207 is connected to a moving block 206 by eight M8 bolts; the bottom of the target body 207 is fixedly provided with a moving block 206 by bolts. The moving block 206 is made of 316 stainless steel material, with a length and width of 120 mm and a height of 150 mm. A sliding track 203 is slidably penetrated through the moving block 206. Grooves 103 are provided on the inner walls of both sides of the accelerator cavity 1. Both ends of the sliding track 203 are slidably connected to the inner walls of the two grooves 103, and the sliding track 203 provides support and sliding guidance for the moving block 206.

[0033] The two ends of the sliding track 203 are fixed with springs, which are located in the groove 103. When installed, the sliding track 203 is convenient for extending into the accelerator cavity 1. The sliding track 203 is made of 316 stainless steel, with a diameter of φ20-23mm and a length of 400mm. The surface of the sliding track 203 is smooth, which is convenient for the movement of the moving block 206.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, the two ends of the target 207 are connected with metal bellows 102, the bellows 201 is made of SUS346 stainless steel, with a diameter of φ15-18mm and a length of 180mm, and two quick connectors 101 are detachably connected with the two metal bellows 102 respectively, and the metal bellows 102 are fixed on both sides of the accelerator cavity 1, and the quick connector 101 is fixed in the metal bellows 102, and the end of the metal bellows 102 away from the target 207 is fixed with a quick connector 202, and the quick connector 202 is threadedly connected with the metal bellows 102, and the quick connector 101 is abutted with the quick connector 202 to realize the connection between the metal bellows 102 and the quick connector 101. The quick connector 101 and the quick connector 202 are both made of 316 stainless steel, and the model is a four-port quick connector.

[0035] The cold water enters the metal bellows 102 on the left through one of the quick connections 101, then enters the target 207 for cooling, and then is discharged from the metal bellows 102 on the right and enters the quick connection 101 on the right to return to the chiller to form a cycle. The resistivity of the cold water is not less than 16.25MΩ·cm 3 .

[0036] In this embodiment, a reciprocating motion device for driving the target body 207 to move back and forth is installed on the accelerator chamber 1. The reciprocating motion device includes a vacuum servo motor 210 fixed to one side of the accelerator chamber 1. The rated power of the vacuum servo motor 210 is 400W. The interior is completely in a vacuum state. The period of the pulse signal connected to the outside can be set according to the simulation results of the size of the accelerator beam angle to ensure that the ion beam can bombard the target surface of the target body 207 while the target body 207 reciprocates.

[0037] A KF connector 105 is fixed on one side of the accelerator cavity 1, a KF adapter 208 is fixedly mounted on the KF connector 105, a vacuum servo motor 210 is welded on the KF adapter 208, a rotating shaft 204 threadedly connected to the moving block 206 is rotatably mounted in the accelerator cavity 1, and an output shaft of the vacuum servo motor 210 is drivingly connected to the rotating shaft 204. Both the connector 105 and the adapter 208 are standard KF interface forms (standard reference GB / T 6071-2003), which facilitates the sealed connection between the vacuum servo motor 210 and the accelerator cavity 1.

[0038] Wherein, a bearing 104 is fixed on one side of the accelerator cavity 1 away from the KF connection port 105, and one end of the rotating shaft 204 is welded to the inner ring of the bearing 104, realizing the rotational connection of the rotating shaft 204 inside the accelerator cavity 1.

[0039] In addition, screw nuts 205 are fixed on both sides of the moving block 206 by bolts. The screw nuts 205 are threadedly connected to the rotating shaft 204. An installation hole is formed in the moving block 206. The rotating shaft 204 passes through the installation hole and the inner diameter of the installation hole is larger than the vertical cross-sectional diameter of the rotating shaft 204. There is a gap between the rotating shaft 204 and the inner wall of the installation hole. Threads adapted to the screw nuts 205 are provided on the rotating shaft 204, thereby realizing the threaded connection between the moving block 206 and the rotating shaft 204.

[0040] It should be noted that a protrusion is formed at one end of the rotating shaft 204 away from the bearing 104, and a circular hole is formed at one end of the rotating shaft 204. A groove adapted to the protrusion is formed on the output shaft of the vacuum servo motor 210, and a round hole is formed on the output shaft of the vacuum servo motor 210. A pin 209 is inserted between the circular hole and the round hole. Through the pin 209 and the protrusion being inserted into the groove, the transmission connection between the output shaft of the vacuum servo motor 210 and the rotating shaft 204 is realized.

[0041] Working principle: Cold water enters from the quick connector 1 101 into the quick connector 2 202, and then sequentially enters the metal bellows 102 and the target 207, and returns to the chiller from the metal bellows 102 on the right and the quick connector 1 101 to form a cycle. At the same time, the vacuum servo motor 210 is started to drive the rotating shaft 204 to rotate, driving the screw nut 205 to move, driving the target 207 to move. The vacuum servo motor 210 is externally connected with a pulse signal to rotate forward in one cycle and reverse in another cycle, driving the target 207 to perform a reciprocating motion, enabling the ion beam to bombard different positions on the target surface, making the target surface receive heat more evenly, and extending the service life of the target.

[0042] The above specific embodiments are merely several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A reciprocating dynamic solid target device, characterized in that: include: An accelerator cavity (1), wherein two sides of the accelerator cavity (1) are fixed with quick connectors (101); A target body (207) is slidably mounted in the accelerator cavity (1) for horizontal movement, wherein two ends of the target body (207) are connected to metal bellows (102), and two quick connectors (101) are detachably connected to the two metal bellows (102); The accelerator cavity (1) is provided with a reciprocating motion device for driving the target body (207) to reciprocate, the reciprocating motion device comprising a vacuum servo motor (210) fixed to one side of the accelerator cavity (1), a KF connecting port (105) is fixed to one side of the accelerator cavity (1), a KF adapter (208) is fixed to the KF connecting port (105), the vacuum servo motor (210) is welded to the KF adapter (208), a rotating shaft (204) threadedly connected to the moving block (206) is rotatably installed in the accelerator cavity (1), and an output shaft of the vacuum servo motor (210) is drivingly connected to the rotating shaft (204); Screw nuts (205) are fixed on both sides of the moving block (206) by bolts, and the screw nuts (205) are threadedly connected to the rotating shaft (204). A mounting hole is provided on the moving block (206), and the rotating shaft (204) passes through the mounting hole, and the inner diameter of the mounting hole is larger than the vertical cross-sectional diameter of the rotating shaft (204).

2. A reciprocating dynamic solid target device according to claim 1, characterized in that: Metal bellows (102) are fixed on both sides of the accelerator cavity (1), the first quick connection (101) is fixed in the metal bellows (102), a second quick connection (202) is fixed at one end of the metal bellows (102) away from the target body (207), the second quick connection (202) is threadedly connected to the metal bellows (102), and the first quick connection (101) is in abutment with the second quick connection (202).

3. A reciprocating dynamic solid target device according to claim 1, characterized in that: A moving block (206) is fixed to the bottom of the target body (207) by bolts, a sliding track (203) is slidably provided on the moving block (206), grooves (103) are provided on the inner walls of both sides of the accelerator cavity (1), and the two ends of the sliding track (203) are respectively slidably connected to the inner walls of the two grooves (103).

4. A reciprocating dynamic solid target device according to claim 3, characterized in that: Springs are fixed at both ends of the sliding track (203), and the springs are located in the groove (103).

5. A reciprocating dynamic solid target device according to claim 4, characterized in that: A bearing (104) is fixed to a side of the accelerator cavity (1) away from the KF connection port (105), and one end of the rotating shaft (204) is welded to the inner ring of the bearing (104).

6. A reciprocating dynamic solid target device according to claim 5, characterized in that: A protrusion is formed at one end of the rotating shaft (204) away from the bearing (104), and a circular hole is formed at one end of the rotating shaft (204); a groove matching the protrusion is formed on the output shaft of the vacuum servo motor (210), and a circular hole is formed on the output shaft of the vacuum servo motor (210); a latch (209) is inserted between the circular hole and the circular hole.

7. The reciprocating dynamic solid target device according to claim 3, characterized in that: The target body (207) is made of titanium material, the cross-sectional diameter of the target body (207) is 80-120 mm, the thickness of the target body (207) is 6-16 mm, and the target body (207) is connected to the moving block (206) via an M8 bolt.

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