Target system equipment suitable for high-speed rotation

Abstract

The utility model relates to the technical field of target system equipment, in particular to target system equipment suitable for high-speed rotation. According to the technical scheme, the device comprises a supporting device and further comprises a driving device and a sealing system which are fixedly installed on the supporting device, one side of the driving device is connected with a cooling device through a water pipe, one side of the supporting device is provided with a vacuum device, and the device further comprises a monitoring device and a control device. According to the utility model, heat on the surface of the target can be effectively removed, the target sheet can bear high energy of 50kW, the requirement of high heat flux density can be met, the problem of insufficient efficiency of traditional heat removal is solved, the temperature of magnetic fluid and the vibration amplitude of a sealing system are monitored in real time through monitoring equipment, abnormal vibration is found and processed in time, and stable operation of the system is ensured; meanwhile, efficient sealing between the rotating target system and the outside is achieved, it is ensured that the vacuum environment of the system is stable in the high-speed rotating and working process, and the vacuum condition needed by the proton beam bombardment target piece is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to target system equipment technical field especially suitable for high -speed rotation's target system equipment. BACKGROUND

[0002] Boron neutron capture therapy (BNCT) is a new cancer treatment method, in BNCT technology, proton accelerator, boron medicine and neutron irradiation system etc. constitute the complete treatment system. Proton accelerator provides high energy proton beam, and hits target material to produce neutron. Therefore, the target material is one of the key factors of neutron production. Commonly used target material has beryllium target and lithium target, when the proton energy is below 3.5 MeV, the neutron yield of lithium target is at least 2.5 times of beryllium target, otherwise, beryllium target is more suitable. For the research project based on 2.5MV, 20mA accelerator BNCT that energy research institute of Hefei comprehensive national science center is carrying out, direct bombardment of lithium target is adopted by DC high voltage accelerator extracted proton beam, and very high energy deposition is formed in front of the target body after the proton bombardment of lithium target, and the melting point of lithium is only 180 DEG C at most, therefore, it is necessary to study the heat removal capacity of lithium target. A large number of researchers set ribs to increase the contact area of target sheet and cooling liquid to achieve the purpose of heat removal. In order to better improve the heat removal capacity, a rotating target is proposed, which can quickly diffuse energy through high-speed rotation of the target sheet.

[0003] However, the method of only relying on setting ribs to increase the contact area is still insufficient for the target sheet that needs to withstand 50kW high energy, and it is difficult to meet the high requirement of heat removal of the target sheet during work, therefore, we propose a target system equipment suitable for high-speed rotation. SUMMARY

[0004] The utility model discloses a kind of target system equipment suitable for high-speed rotation, to solve the problems that only relying on setting ribs to increase the contact area in the background art is insufficient for the target sheet that needs to withstand 50kW high energy, and it is difficult to meet the high requirement of heat removal of the target sheet during work.

[0005] The technical scheme of the utility model: a kind of target system equipment suitable for high-speed rotation, including support equipment, still include:

[0006] driving equipment and sealing system are fixedly installed on the support equipment, and the driving equipment and sealing system are rotationally connected, and the driving equipment side is connected with cooling equipment by water pipe;

[0007] vacuum equipment is arranged on the side of the support equipment, and the vacuum equipment and the sealing system are fixedly connected by bellows;

[0008] A monitoring device for detecting the temperature of the magnetic fluid and the vibration condition of the sealing system;

[0009] A control device for controlling the driving device.

[0010] Optionally, the supporting device comprises a supporting frame, a rotating handle, a rotating shaft, and a supporting plate, the driving device and the sealing system are fixedly connected to the top of the supporting plate, and the bottom of the supporting frame is provided with a plurality of groups of liftable pulleys.

[0011] Optionally, the rotating handle is fixedly connected to the rotating shaft, the supporting plate is rotatably installed between the supporting frames, and the supporting plate is fixedly connected to the rotating shaft.

[0012] Optionally, the sealing system comprises a vacuum chamber, a target sheet, and a water cooling device, the vacuum chamber is fixedly connected to the target sheet, the target sheet is fixedly connected to the water cooling device, the vacuum chamber is sealed by a magnetic fluid, and the water cooling device is connected to a cooling device.

[0013] Optionally, the driving device adopts a servo motor, the driving device further comprises a belt pulley driven by the servo motor, a vacuum chamber rotating shaft is rotatably installed in the vacuum chamber, and the driving device is rotatably connected to the vacuum chamber rotating shaft through the belt pulley.

[0014] Optionally, the vacuum device comprises a mechanical pump and a molecular pump, and an output end of the vacuum device is connected to the vacuum chamber.

[0015] Optionally, the cooling device adopts an industrial water chiller, the monitoring device is integrated with a thermocouple and a vibration sensor, and the vibration sensor is arranged on the sealing system.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] 1. The utility model discloses a high-speed rotating target sheet and water cooling combined mode, effectively removes the heat of the target surface, can make the target sheet bear 50kW high energy, adapts to the demand of high heat flux density, solves the problem of insufficient traditional heat removal efficiency, simultaneously, through the monitoring device, the temperature of the magnetic fluid is monitored in real time to prevent the magnetic failure from affecting the vacuum degree, simultaneously, the vibration amplitude of the sealing system is recorded, vibration abnormity is found and handled in time, and stable operation of the system is ensured.

[0018] 2. The utility model discloses a large-diameter magnetic fluid sealing technology, realizes the efficient sealing of the rotating target system and the outside, ensures the stability of the vacuum environment of the system in the high-speed rotation and working process, and meets the vacuum condition required by the proton beam bombardment target sheet.

[0019] The utility model discloses a target system equipment suitable for high -speed rotation can effectively remove the heat of target surface can make target piece bear 50kW high energy, adapt high heat flow density demand, solve the problem of traditional heat removal efficiency shortage, and through monitoring equipment real -time monitoring magnetofluid temperature and the vibration amplitude of sealing system, timely discovery and handle vibration anomaly, ensure system stable operation, simultaneously, still realized the efficient sealing of rotating target system and outside, ensure the vacuum environment stability of system in high -speed rotation and working process, satisfy the vacuum condition required by proton beam bombardment target piece. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 Give the utility model a structure schematic diagram suitable for high -speed rotating target system equipment;

[0021] Fig. 2 It is structure schematic diagram of supporting equipment;

[0022] Fig. 3 It is structure schematic diagram of sealing system.

[0023] Reference signs: 1, supporting equipment;11, support frame;12, rotating handle;13, rotating shaft;14, support plate;2, driving equipment;3, sealing system;31, vacuum chamber;32, target piece;33, water cooling device;4, vacuum equipment;5, cooling equipment;6, monitoring equipment;7, control equipment. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be described below in connection with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.

[0025] The components of the utility model embodiments generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.

[0026] Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled person in the art without creative labor belong to the scope of protection of the utility model.

[0027] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] It needs to explain that the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent in such process, method, article or equipment, in the specification, the illustrative expression of the above terms does 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.

[0029] In the description of the utility model, it needs to explain that, unless otherwise expressly provided and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] Embodiment

[0031] As Figs. 1 to 3 shown, the utility model proposes a kind of target system equipment suitable for high-speed rotation, including support equipment 1, support equipment 1 includes support frame 11, rotating handle 12, rotating shaft 13, support plate 14, support frame 11 bottom is equipped with several groups of liftable pulley, adjust the pulley under support frame 11, make pulley pad contact with ground, prevent the device from shaking when rotating;

[0032] The support device 1 is fixedly provided with a driving device 2 and a sealing system 3, the driving device 2 and the sealing system 3 are rotationally connected, the driving device 2 and the sealing system 3 are fixedly connected to the top of a support plate 14, a rotating handle 12 is fixedly connected to a rotating shaft 13, the support plate 14 is rotationally installed between support frames 11, the support plate 14 is fixedly connected to the rotating shaft 13, the rotating handle 12 is shaken to rotate the rotating shaft 13, so that the support plate 14 is rotated between the support frames 11, and the angle of the sealing system 3 fixedly installed on the support plate 14 is adjusted, so that the proton beam bombardment area deviates from the target center, and the purpose of heat flow diffusion is achieved.

[0033] In addition, the driving device 2 is connected with a cooling device 5 through a water pipe on one side, the sealing system 3 comprises a vacuum chamber 31, a target sheet 32 and a water cooling device 33, the vacuum chamber 31 is fixedly connected to the target sheet 32, the target sheet 32 is fixedly connected to the water cooling device 33, the vacuum chamber 31 adopts a magnetic fluid sealing, the target sheet 32 is used for generating neutrons and can withstand a heat power of 50 kW, the water cooling device 33 is connected to the cooling device 5, the water cooling device 33 sprays water to the bottom of the target sheet 32 during rotation to remove heat, the cooling device 5 provides cooling water to the water cooling device, the cooling device 5 adopts an industrial water chiller, the power of the industrial water chiller is 5.3 kW, and the cooling water flow is 1 m3 / h.

[0034] In the embodiment, the driving device 2 adopts a servo motor, the rotating speed of the servo motor is 0-3000 rmp, and the rated torque is 9.55 N·m; the driving device 2 further comprises a belt pulley driven by the servo motor, a vacuum chamber rotating shaft is rotationally installed in the vacuum chamber 31, the driving device 2 is rotationally connected to the vacuum chamber rotating shaft through the belt pulley, the driving device 2 is started by the control device 7, so that the rotating speed of the servo motor gradually increases to 1000 rmp, the vacuum chamber 31 adopts a magnetic fluid sealing, the magnetic fluid is fixed around the vacuum chamber rotating shaft, and when rotating, the magnetic fluid forms a “liquid O-shaped sealing ring” due to the magnetic field, so that the sealing effect is achieved, the efficient sealing of the rotating target system and the outside is realized, the stability of the vacuum environment of the system during high-speed rotation and working is ensured, and the vacuum condition required by the proton beam bombardment target sheet is met;

[0035] The support device 1 is provided with a vacuum device 4 on one side, the vacuum device 4 is fixedly connected to the sealing system 3 through a corrugated pipe, the vacuum device 4 comprises a mechanical pump and a molecular pump, an output end of the vacuum device 4 is connected to the vacuum chamber 31, the vacuum device 4 is opened, and the sealing system 3 is pumped through the corrugated pipe, before working, the mechanical pump is opened first to pump the vacuum chamber 31 to 10 1 Pa, then the molecular pump is opened to pump the vacuum to 10 -4 Pa, so that the pressure in the sealing system 3 reaches 10 -4 Pa, and then the cooling device 5 is opened to cool the vacuum chamber 31 and the target sheet 32.

[0036] The target system device in the embodiment also comprises a monitoring device 6 for detecting the temperature of the magnetic fluid and the vibration condition of the sealing system 3, the monitoring device 6 integrates a thermocouple and a vibration sensor, the vibration sensor is arranged on the sealing system 3, the temperature of the magnetic fluid is monitored in real time through the monitoring device 6, the temperature of the magnetic fluid is prevented from being too high to cause magnetic failure and further affect the vacuum degree, meanwhile, the vibration amplitude of the sealing system 3 is recorded in real time, vibration abnormalities are found and handled in time, and the stable operation of the system is ensured;

[0037] The working principle of the embodiment is as follows: in the working process, first, the pulley under the support frame 11 is adjusted so that the pulley pad is in contact with the ground to prevent the device from shaking during rotation, then the rotating handle 12 is shaken to rotate the rotating shaft 13 fixedly connected with the rotating handle 12, so as to drive the support plate 14 to rotate between the support frames 11, thereby adjusting the angle of the sealing system 3 fixedly installed on the support plate 14, making the proton beam bombardment area deviate from the target center, achieving the purpose of heat flow diffusion, then the vacuum device 4 is opened, the sealing system 3 is pumped through the bellows, before working, the mechanical pump is opened to pump the vacuum chamber 31 to 10 1 Pa, then the molecular pump is opened to pump the vacuum to 10 -4 Pa, so that the pressure in the sealing system 3 reaches 10 -4 Pa, the cooling device 5 is opened to cool the vacuum chamber 31 and the target plate 32, finally, the driving device 2 is started through the control device 7, so that the rotating speed of the servo motor gradually increases to 1000rmp, the vacuum chamber 31 adopts magnetic fluid sealing, the magnetic fluid is fixed around the rotating shaft of the vacuum chamber, when rotating, the magnetic fluid forms a "liquid O-shaped sealing ring" due to the magnetic field, thereby achieving the sealing effect, realizing the efficient sealing of the rotating target system and the outside, ensuring the stability of the vacuum environment of the system during high-speed rotation and working, meeting the vacuum condition required by the proton beam bombardment target plate; the temperature of the magnetic fluid should be less than 70℃, the water cooling device 33 sprays water to the bottom of the target plate 32 during rotation to remove heat, and the cooling device 5 provides cooling water to the water cooling device, thereby effectively removing the heat on the surface of the target; the temperature of the magnetic fluid is monitored in real time through the monitoring device 6 to prevent the temperature of the magnetic fluid from being too high to cause magnetic failure and further affect the vacuum degree, meanwhile, the vibration amplitude of the sealing system 3 is recorded in real time through the vibration sensor arranged on the sealing system 3, vibration abnormalities are found and handled in time, and the stable operation of the system is ensured.

[0038] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A target system device suitable for high speed rotation, comprising a support device (1), characterized in that, Also include: The driving device (2) and sealing system (3) are fixedly installed on the support device (1), and the driving device (2) and sealing system (3) are rotatably connected, one side of the driving device (2) is connected with the cooling device (5) through the water pipe; The vacuum device (4) is arranged on one side of the support device (1), and the vacuum device (4) and the sealing system (3) are fixedly connected through the bellows; The monitoring device (6) for detecting the temperature of the magnetic fluid and the vibration condition of the sealing system (3); The control device (7) for controlling the driving device (2).

2. A target system apparatus suitable for high speed rotation according to claim 1, wherein, The support device (1) includes a support frame (11), a rotating handle (12), a rotating shaft (13), and a support plate (14), the driving device (2) and the sealing system (3) are fixedly connected to the top of the support plate (14), and the bottom of the support frame (11) is provided with a plurality of groups of liftable pulleys.

3. A target system apparatus suitable for high speed rotation according to claim 2, wherein, The rotating handle (12) is fixedly connected with the rotating shaft (13), the support plate (14) is rotatably installed between the support frame (11), and the support plate (14) is fixedly connected with the rotating shaft (13).

4. A target system apparatus suitable for high speed rotation according to claim 1, wherein, The sealing system (3) includes a vacuum chamber (31), a target sheet (32) and a water cooling device (33), the vacuum chamber (31) and the target sheet (32) are fixedly connected, the target sheet (32) and the water cooling device (33) are fixedly connected, the vacuum chamber (31) is sealed by magnetic fluid, and the water cooling device (33) is connected with the cooling device (5).

5. A target system apparatus suitable for high speed rotation according to claim 4, wherein, The driving device (2) adopts a servo motor, the driving device (2) further includes a belt pulley driven by the servo motor, a vacuum chamber rotating shaft is rotatably installed in the vacuum chamber (31), and the driving device (2) is rotatably connected with the vacuum chamber rotating shaft through the belt pulley.

6. A target system apparatus suitable for high speed rotation according to claim 5, wherein, The vacuum device (4) includes a mechanical pump and a molecular pump, and the output end of the vacuum device (4) is connected with the vacuum chamber (31).

7. A target system apparatus suitable for high speed rotation according to claim 1, wherein, The cooling device (5) adopts an industrial water chiller, the monitoring device (6) integrates a thermocouple and a vibration sensor, and the vibration sensor is arranged on the sealing system (3).

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