Electron irradiation accelerator and electron irradiation sterilization system

Abstract

The invention discloses an electron irradiation accelerator and an electron irradiation sterilization system. The electron irradiation accelerator comprises a supporting device which comprises a supporting main body and a supporting frame, the supporting main body comprises a first side and a second side which are oppositely arranged, and the supporting frame is detachably arranged on the second side of the supporting main body; the emission module is arranged on the first side of the supporting main body and is used for emitting electron beams; and the beam outlet module is arranged on the supporting frame, and the electron beams emitted by the beam outlet module are emitted through the beam outlet module for irradiation. According to the invention, the transmitting module is arranged on the supporting main body, the beam output module is arranged on the supporting frame, and the supporting main body and the supporting frame are detachably connected, so that detachable connection between the transmitting module and the beam output module is realized. Therefore, the emission module can be independently packaged to serve as a replaceable beam output module, and beam output modules of different specifications can be installed according to requirements to form a complete accelerator device.

Description

Technical Field

[0001] The present application relates to the field of electron irradiation accelerators, and in particular to an electron irradiation accelerator and an electron irradiation sterilization system. Background Art

[0002] In recent years, electron irradiation sterilization technology has developed rapidly. Electron irradiation sterilization has strong penetration, simple operation, and no residual toxic substances, and has been widely used. However, due to its structural setting, the electron irradiation accelerator in the related technology has large volume, many supporting equipment, and the corresponding shielding plant is large in volume and occupies a large area, which leads to limited use scenarios and cannot meet the use needs in some scenarios. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides an electron irradiation accelerator that can be miniaturized and modularized, and an electron irradiation sterilization system having the electron irradiation accelerator.

[0004] This application is implemented through the following technical solutions.

[0005] The first aspect of the present application provides an electron irradiation accelerator, comprising: a supporting device, comprising a supporting body and a supporting frame, the supporting body comprising a first side and a second side arranged opposite to each other, and the supporting frame being detachably arranged on the second side of the supporting body; an emission module, arranged on the first side of the supporting body, the emission module being used to emit an electron beam; and a beam output module, arranged on the supporting frame, the electron beam emitted by the beam output module being emitted through the beam output module for irradiation.

[0006] In the present application, the emission module is arranged on the supporting body, the beam-emitting module is arranged on the supporting frame, and the supporting body and the supporting frame are arranged to be detachably connected to realize the detachable connection between the emission module and the beam-emitting module. Thus, it is convenient to package the emission module separately, and as a replaceable beam-emitting module, beam-emitting modules of different specifications can be installed according to the needs to form a complete accelerator device. In addition, the detachable connection of the two modules is also convenient for later maintenance, replacement of components, debugging, etc.

[0007] In some embodiments of the present application, the emission module includes an electron gun, a focusing assembly, a beam detection device and an accelerating tube, and the electron gun, the focusing assembly, the beam detection device and the accelerating tube are coaxially arranged; the supporting body includes a supporting substrate, and the beam detection device is arranged on the supporting substrate.

[0008] In some embodiments of the present application, the support body includes a bracket and a first support plate, the bracket is arranged on the first side of the support body, and the first support plate is arranged on the bracket; the emission module includes an electron gun transformer and a klystron, the output power of the klystron is fed to the accelerating tube, and the electron gun transformer and the klystron are arranged on the same side of the first support plate.

[0009] The electron gun transformer and the klystron are arranged on the same side of the first support plate, which is conducive to achieving the structural stability of the entire device. The electron gun transformer and the klystron can be supported by one support plate, which can also save the setting of the support plate, save space and save costs.

[0010] In some embodiments of the present application, the focusing assembly includes a first focusing assembly; the supporting body includes: a second supporting plate, which is arranged on a bracket, the second supporting plate is located at an end of the supporting body away from the supporting frame, the first focusing assembly is arranged on the second supporting plate, and the second supporting plate is provided with an adjusting device, which is used to level the second supporting plate and make the first focusing assembly coaxial with the accelerating tube.

[0011] The setting position and setting angle of the second support plate can be adjusted by the adjustment device. For example, the second support plate can be leveled to adjust the first focusing assembly and the accelerating tube to be coaxial, so that the electron irradiation accelerator can be easily installed. In addition, due to the setting of the adjustment device, the difficulty of installation can be reduced. Specifically, in the early stage of installation, it is sufficient to roughly align, and in the later stage of installation, the second support plate can be finely adjusted by the adjustment device.

[0012] In some embodiments of the present application, the electron irradiation accelerator includes a vacuum system, which is used to maintain a vacuum state of the electron irradiation accelerator, and the vacuum system includes a first vacuum component and a second vacuum component; the support body includes a third support plate and a fourth support plate, and the third support plate and the fourth support plate are both arranged on the bracket, the first vacuum component is arranged on the third support plate, the second vacuum component is arranged on the fourth support plate, the third support plate is arranged on the second support plate, and the second support plate is located at one end of the support body away from the support frame.

[0013] In the present application, the first vacuum assembly is arranged on the third support plate, and the third support plate and the first focusing assembly are arranged on the second support plate, which is conducive to achieving the structural compactness of the electron irradiation accelerator. In addition, the second support plate supports the third support plate, and the third support plate supports the first focusing assembly, which is conducive to enhancing the structural stability of the electron irradiation accelerator.

[0014] In the present application, the second support plate can be located at the end of the support body, the second support plate can be used as an end plate on one side of the support body, and can also fix and support the first focusing assembly, so as to reduce the size (length or height) of the support body and make full use of the bracket of the support body. The second support plate is designed with a third support plate, which can be used for multiple purposes, save space, and improve installation efficiency.

[0015] In some embodiments of the present application, the transmitting device includes an input waveguide system, which is used to feed the output power of the klystron into the accelerating tube; the supporting body includes a fifth support plate, which is arranged on the bracket, the input waveguide system is arranged on the fifth support plate, and the fifth support plate is arranged on the second support plate, and the second support plate is located at one end of the supporting body away from the supporting frame.

[0016] In the present application, the input waveguide system is arranged on the fifth support plate, and the fifth support plate arrangement, the third support plate and the first focusing assembly are all arranged on the second support plate, which is conducive to achieving the structural compactness of the electron irradiation accelerator. In addition, the second support plate supports the fifth support plate, and the fifth support plate supports the input waveguide system, which is conducive to enhancing the structural stability of the electron irradiation accelerator.

[0017] In the present application, the second support plate can be located at the end of the support body, the second support plate can be used as an end plate on one side of the support body, and can also fix and support the first focusing assembly, so as to reduce the size (length or height) of the support body and make full use of the bracket of the support body. The second support plate is designed with a third support plate and a fifth support plate, which can be used for multiple purposes, save space, and improve installation efficiency.

[0018] In some embodiments of the present application, the electron irradiation accelerator includes a klystron transformer, the klystron and the klystron transformer are connected by a high-voltage line, and the interface of the high-voltage line is located on a side of the klystron facing the klystron transformer.

[0019] In the present application, the klystron and the klystron transformer can be arranged adjacent to each other and connected by a high-voltage line, which is conducive to achieving a compact structure, reducing the volume of the transmitting module, and facilitating the separate packaging of the transmitting module to achieve a detachable connection with the beam output module.

[0020] In some embodiments of the present application, the beam output module includes a scanning box, which is disposed on a support frame; the vacuum group system includes a third vacuum component, which is installed on the scanning box.

[0021] In the present application, the third vacuum assembly is installed in the scanning box, which is conducive to realizing the compactness of the beam output module structure and reducing the volume of the beam output module. At the same time, such an arrangement also facilitates the detachable connection between the beam output module and the emission module.

[0022] Input waveguide system Input waveguide system Input waveguide system Input waveguide system First support plate In some embodiments of the present application, the diameter of the accelerating tube is 150mm-230mm, and the length of the accelerating tube is 400mm-550mm; and / or the diameter of the klystron is 40mm-60mm, and the length of the klystron is 800mm-1200mm, and the klystron exchanges heat through natural wind; and / or the volume of the first vacuum component is 20L-30L, so that the first vacuum component is directly connected to the input waveguide system; and / or the volume of the second vacuum component is 20L-30L, so that the second vacuum component is directly connected to the load waveguide system.

[0023] In the present application, the size of the klystron is relatively small, so that heat exchange can be performed through air cooling. Accordingly, the size of the transformer of the klystron can also be reduced, which is conducive to reducing the overall volume of the emission module, and then the volume of the first vacuum component and the second vacuum component used to maintain the vacuum state of the emission module can be set to be relatively small, so that the first vacuum component can be directly connected to the input waveguide system, and the second vacuum component can be directly connected to the load waveguide system, thereby achieving the compactness of the structure of the electron irradiation accelerator.

[0024] In the present application, the vacuum state of the emission module can be maintained by the vacuum system, and there is no need to set up additional vacuum components, thereby saving parts, saving space, and miniaturizing the device. Furthermore, the electron irradiation accelerator of the present application can be applied to the fields of letter sterilization, food sterilization, small postal sterilization, security inspection, book disinfection, etc. due to its miniaturization, expanding the use scenarios.

[0025] The second aspect of the present application provides an electron irradiation sterilization system, comprising: the electron irradiation accelerator as in the first aspect; a transmission device, through which the object to be irradiated is transmitted, and the transmission device passes through the electron irradiation accelerator, so that the electron irradiation accelerator irradiates the object to be irradiated.

[0026] In the present application, the vacuum state of the emission module is maintained by a vacuum system, and there is no need to set up additional vacuum components, thereby saving parts, saving space, and miniaturizing the device. Furthermore, the electron irradiation accelerator of the present application can be applied to the fields of letter sterilization, food sterilization, small postal sterilization, security inspection, book disinfection, etc. due to its miniaturization, expanding the use scenarios.

[0027] In the present application, the emission module and the scanning module are configured to be detachably connected, which can facilitate later maintenance, replacement of components, debugging, etc. In addition, since the emission module and the scanning module are configured to be detachably connected, the emission module can be packaged separately as a replaceable beam output module, and beam output modules of different specifications can be installed according to requirements to form a complete accelerator device. In addition, the two modules are detachably connected, which is also convenient for later maintenance, replacement of components, debugging, etc.

[0028] Through modularization and miniaturization of the electron irradiation accelerator, the volume of the electron irradiation sterilization system of the present application can also be reduced, and the construction difficulty can also be reduced, thereby increasing the usage scenarios and reducing the difficulty of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 A schematic diagram of the structure of an electron irradiation accelerator provided in some embodiments of the present application;

[0031] Figure 2 A schematic diagram of the structure of an electron irradiation accelerator provided in some embodiments of the present application;

[0032] Figure 3 A schematic diagram of the structure of an electron irradiation sterilization system provided in some other embodiments of the present application.

[0033] Description of Reference Numerals

[0034] 1. Electron irradiation accelerator; 10. Emission module; 100. Housing; 200. Switch extension; 300. Transmission device; 11. Load waveguide system; 12. Second vacuum assembly; 13. Beam detection device; 14. Scanning box; 15. Third vacuum assembly; 16. Klystron; 17. Klystron transformer; 18. Electron gun transformer; 19. Scanning magnet; 20. Beam output module; 40. Support device; 401. Support body; 4001. Bracket; 4011. Support substrate; 402. Second support plate ; 403, the ninth support plate; 404, the sixth support plate; 405, the first support plate; 406, the third support plate; 407, the fifth support plate; 408, the fourth support plate; 409, the support frame; 410, the seventh support plate; 411, the eighth support plate; 412, the scanning box suspension rod; 4021, the first fine-tuning device; 4031, the second fine-tuning device; 50, the electron gun; 60, the accelerating tube; 70, the first focusing assembly; 80, the second focusing assembly; 90, the input waveguide system; 101, the first vacuum assembly. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0036] In recent years, electron irradiation sterilization technology has developed rapidly. Electron irradiation sterilization has strong penetration, simple operation, and no residual toxic substances, and has been widely used. However, due to its structural setting, the electron irradiation accelerator in the related technology has large volume, many supporting equipment, and the corresponding shielding plant is large in volume and occupies a large area, which leads to limited use scenarios and cannot meet the use needs in some scenarios.

[0037] In order to solve the above technical problems, the present application provides an electron irradiation accelerator that can be miniaturized and modularized, and an electron irradiation sterilization system having the electron irradiation accelerator.

[0038] The present application provides an electron irradiation accelerator, comprising: a supporting device, comprising a supporting body and a supporting frame, the supporting body comprising a first side and a second side arranged opposite to each other, and the supporting frame being detachably arranged on the second side of the supporting body; an emission module, arranged on the first side of the supporting body, the emission module being used to emit an electron beam; and a beam-emitting module, arranged on the supporting frame, the electron beam emitted by the beam-emitting module being emitted through the beam-emitting module for irradiation.

[0039] In the present application, the emission module is arranged on the supporting body, the beam-emitting module is arranged on the supporting frame, and the supporting body and the supporting frame are arranged to be detachably connected to realize the detachable connection between the emission module and the beam-emitting module. Thus, it is convenient to package the emission module separately, and as a replaceable beam-emitting module, beam-emitting modules of different specifications can be installed according to the needs to form a complete accelerator device. In addition, the detachable connection of the two modules is also convenient for later maintenance, replacement of components, debugging, etc.

[0040] The klystron of the present application may be an S-band klystron. In the present application, the vacuum state of the transmitting module is maintained by a titanium pump device, and there is no need to set up another vacuum component, so that parts can be saved, space can be saved, and the device can be miniaturized. Therefore, the electron irradiation accelerator of the present application can be applied to the fields of letter sterilization, food sterilization, small postal sterilization, security inspection, book disinfection, etc. due to its miniaturization, expanding the use scenarios.

[0041] In the present application, the electron irradiation accelerator may be a high energy (5MeV-10MeV) accelerator, for example, a linear accelerator, which accelerates electrons using a microwave electromagnetic field. The electron irradiation accelerator may be a traveling wave or standing wave type, and the electron energy is generally high (>5MeV), with an output power of several kW to several tens of kW. The energy of the electron linear accelerator may be 10MeV. Within the permitted range of radiation processing safety, high energy (>5MeV) electrons have a deeper effective penetration into the irradiated object, and the conversion efficiency of X-rays is also higher.

[0042] A linear accelerator (LINAC) is an accelerator device that transfers charged particles along a straight track under the acceleration of a high-frequency electric field. The axial high-frequency electric field in a LINAC is generated by the microwave power injected from a microwave power source (generally at a frequency of 0.5-30 GHz). The beam is accelerated synchronously with the alternating electric field to form multiple bunches. The energy obtained by the beam depends on the average electric field strength and the length of the acceleration path. Therefore, the LINAC is not restricted by the difficulty of further increasing the high voltage of the high-voltage power supply in a high-voltage accelerator, and the beam energy can reach the GeV level. Compared with other high-energy accelerators, LINACs have the advantages of simple injection and extraction, high beam utilization efficiency, and strong beam. Since LINACs can easily achieve higher beam energies, the 5-10 MeV high-energy accelerators in the field of radiation processing are mainly electron LINACs.

[0043] In the present application, the basic components of the electron irradiation accelerator mainly include an electron gun, an acceleration structure, a focusing system, a modulator, a power source, a microwave transmission system, a vacuum system, a control system, a constant temperature system, a beam transport system, etc. The main functions of each component are as follows: the modulator generates two high-voltage pulses, an excitation power source, and the high-power RF pulse generated by the power source is injected into the accelerating tube through the microwave transmission system to establish an accelerating electric field in the accelerating tube. Another high-voltage pulse is added to the electron gun to draw out the electron beam, and the electron beam is injected into the accelerating tube and accelerated by the accelerating electric field. The focusing system ensures that the beam is always transmitted along the central track during the acceleration process to maintain a small beam cross section. There are also scanning magnets and scanning box systems in the irradiation accelerator. The high-energy electron beam emitted by the accelerating tube is transmitted to the scanning magnet through the transport system. The scanning magnet deflects the beam repeatedly within a fixed angle. After passing through a longer scanning box, the scanning width of the electron beam emission is increased, that is, the range of irradiation is increased, and larger-sized objects can be irradiated.

[0044] Figure 1 A schematic diagram of the structure of an electron irradiation accelerator provided in some embodiments of the present application; Figure 2 A schematic diagram of the structure of an electron irradiation accelerator provided for some embodiments of the present application.

[0045] like Figure 1 and Figure 2 As shown, the electron irradiation accelerator 1 may include: a support device 40, an emission module 10 and a beam output module 20. The support device 40 may include a support body 401 and a support frame 409, the support body 401 may include a first side and a second side arranged oppositely, and the support frame 409 may be detachably arranged on the second side of the support body 401.

[0046] In the present application, the first side and the second side may be two sides opposite to each other in any direction, for example, two sides opposite to each other in the horizontal direction, or two sides opposite to each other in the gravity direction, and correspondingly, the support body 401 and the support frame 409 may be a horizontal structure, or an upper and lower structure in the vertical direction. It should be noted that the directions defined in the present disclosure are intended to define the relative positional relationship between the components, and are not limited to the absolute positional relationship.

[0047] like Figure 1 and Figure 2 As shown, the emission module 10 can be disposed on the first side of the support body 401 , and the emission module 10 is used to emit electron beams.

[0048] In the present application, the emission module 10 may include an electron gun 50, a focusing assembly, a beam detection device 13, and an accelerating tube 60, and the electron gun 50, the focusing assembly, the beam detection device 13, and the accelerating tube 60 are coaxially arranged. The electron gun 50, the focusing assembly, the beam detection device 13, and the accelerating tube 60 may be connected by a vacuum flange, and the coaxiality of the connection is ensured.

[0049] In some embodiments of the present application, the emission module 10 may include an electron gun transformer 18 , a klystron 16 , an input waveguide system 90 and a load waveguide system 11 . The input waveguide system 90 is used to feed the output power of the klystron into the accelerating tube 60 .

[0050] In some embodiments of the present application, the support body 401 includes a support substrate 4011 , and the beam detection device 13 can be disposed on the support substrate 4011 .

[0051] In the present application, the focusing assembly may include a first focusing assembly 70 and a second focusing assembly 80 , both of which are arranged in series with the accelerating tube 60 , and both of which are coaxially arranged with the accelerating tube 60 .

[0052] In some embodiments of the present application, the support body 401 may include a bracket 4001 and a first support plate 405. The bracket 4001 is arranged on the first side of the support body. The bracket 4001 can be arranged in plurality. The plurality of brackets 4001 can be located on the peripheral side of the first side of the support body 401. Taking the support body 401 as a rectangle as an example, the plurality of brackets 4001 can be located at the four corners of the rectangle respectively, so as to stably support the support body 401.

[0053] like Figure 2 As shown, the bracket 4001 may be rod-shaped, for example, may be formed as a column of the first support plate 405. The first support plate 405 may be disposed on the bracket 4001.

[0054] In some embodiments of the present application, the emission module 10 may include an electron gun transformer 18 and a klystron 16, the output power of the klystron 16 is fed to the accelerating tube 60, and the electron gun transformer 18 and the klystron 16 are arranged on the same side of the first support plate.

[0055] The electron gun transformer 18 and the klystron 16 are arranged on the same side of the first support plate 405, which is conducive to achieving the structural stability of the entire device. The electron gun transformer and the klystron can be supported by one support plate, which can also save the setting of the support plate, save space and save costs.

[0056] For example, the electron gun transformer 18 and the klystron 16 may be located at two ends of the same side of the first support plate 405, respectively, and the electron gun transformer 18 and the klystron 16 may be arranged opposite to each other.

[0057] In this application, if Figure 1 and Figure 2 As shown, the klystron 16 is mounted on one side of the first support plate 405. The output power of the klystron 16 is fed into the accelerating tube 60 through the input waveguide system 90. The outlet of the accelerating tube 60 is connected to the load waveguide system 11 to absorb the power. In order to make the entire device compact, the electron gun transformer 18 is mounted on the other side of the first support plate 405.

[0058] In this application, if Figure 2 As shown, the support body 401 may include a second support plate 402, the second support plate 402 may be arranged on the bracket 4001, the first focusing assembly 70 may be arranged on the second support plate 402, and the second support plate 402 is provided with an adjusting device, the adjusting device is used to level the second support plate and make the first focusing assembly coaxial with the accelerating tube.

[0059] In the present application, the second support plate 402 is located at an end of the support body 401 away from the support frame 409 , which is helpful to reduce the overall length of the support body 401 .

[0060] Taking the vertical installation of the electron irradiation accelerator 1 as an example, the second support plate 402 can be located on the top of the support body 401. The second support plate 402 can serve as the top plate of the support body 401 and can also fix and support the first focusing assembly 70, thereby reducing the height of the support body 401 and making full use of the bracket 4001 (column) of the support body 401.

[0061] If the electron irradiation accelerator 1 is installed horizontally, the second support plate 402 can be located at the end of the support body 401. The second support plate 402 can fix and support the first focusing assembly 70, thereby reducing the length of the support body 401 and making full use of the bracket 4001 of the support body 401.

[0062] In the present application, the adjustment device provided on the second support plate 402 may be a first fine-tuning device 4021. The first fine-tuning device 4021 may adjust the second support plate 402 up and down, front and back, left and right.

[0063] The setting position and setting angle of the second support plate 402 can be adjusted by the adjustment device. For example, the second support plate 402 can be leveled to adjust the first focusing assembly 70 and the accelerating tube 60 to be coaxial, so that the electron irradiation accelerator 1 is easy to install. In addition, due to the setting of the adjustment device, the difficulty of installation can be reduced. Specifically, in the early stage of installation, it is sufficient to roughly align, and in the later stage of installation, the second support plate can be finely adjusted by the adjustment device.

[0064] In some embodiments of the present application, the electron irradiation accelerator 1 may include a vacuum system, and the vacuum system is used to maintain the vacuum state of the electron irradiation accelerator. The vacuum system includes a first vacuum component 101 and a second vacuum component 12 .

[0065] In the present application, the first vacuum component 101 may be a titanium pump, but the present disclosure is not limited thereto. In some embodiments, the first vacuum component 101 may also be other vacuum devices, or may be a vacuum pump made of other materials.

[0066] In some embodiments of the present application, the volume of the first vacuum assembly 101 may be 20L-30L, so that the first vacuum assembly 101 is directly connected to the input waveguide system 90. For example, in some embodiments, the volume of the first vacuum assembly 101 may be 21L, 22L, 23L, 24L, 25L, 26L, 27L, 28L, 29L.

[0067] In the present application, the second vacuum component 12 may be a titanium pump, but the present disclosure is not limited thereto. In some embodiments, the second vacuum component 12 may also be other vacuum devices, or may be a vacuum pump made of other materials.

[0068] In some embodiments of the present application, the volume of the second vacuum assembly 12 is 20L-30L, so that the second vacuum assembly 12 can be directly connected to the load waveguide system 11. For example, in some embodiments, the volume of the second vacuum assembly 12 can be 21L, 22L, 23L, 24L, 25L, 26L, 27L, 28L, 29L.

[0069] like Figure 2 As shown, the support body 401 may include a third support plate 406 and a fourth support plate 408, both of which are disposed on the bracket 4001, the first vacuum assembly 101 may be disposed on the third support plate 406, the second vacuum assembly 12 may be disposed on the fourth support plate 408, and the third support plate 406 is disposed on the second support plate 402. A titanium pump support (third support plate) is designed on the second support plate 402, which can be used for multiple purposes, save space, and improve installation efficiency.

[0070] In the present application, the first vacuum assembly 101 is disposed on the third support plate 406, and the third support plate 406 and the first focusing assembly 70 are both disposed on the second support plate 402, which is conducive to achieving the compactness of the structure of the electron irradiation accelerator 1. In addition, the second support plate 402 supports the third support plate 406, and the third support plate 406 supports the first focusing assembly 70, which is conducive to enhancing the structural stability of the electron irradiation accelerator.

[0071] In some embodiments of the present application, the transmitting module 10 may include an input waveguide system 90, which is used to feed the output power of the klystron into the accelerating tube; the supporting body includes a fifth support plate, which is arranged on the bracket, the input waveguide system is arranged on the fifth support plate, and the fifth support plate is arranged on the second support plate.

[0072] In the present application, the input waveguide system 90 can be arranged on the fifth support plate 407, and the fifth support plate 407, the third support plate 406 and the first focusing assembly 70 are all arranged on the second support plate 402, which is conducive to achieving the compactness of the structure of the electron irradiation accelerator 1. In addition, the second support plate 402 supports the fifth support plate 407, and the fifth support plate 407 supports the input waveguide system 90, which is conducive to enhancing the structural stability of the electron irradiation accelerator 1. The second support plate 402 is designed with a titanium pump support (third support plate 406) and a curved waveguide support (fifth support plate 407), which can be used for multiple purposes, save space, and improve installation efficiency.

[0073] In some embodiments of the present application, the electron irradiation accelerator 1 may include a klystron transformer 17 , the klystron 16 and the klystron transformer 17 may be connected via a high-voltage line, and an interface of the high-voltage line is located on a side of the klystron 16 facing the klystron transformer 17 .

[0074] In the present application, the klystron 16 and the klystron transformer 17 can be arranged adjacent to each other and connected by a high-voltage line, which is conducive to achieving a compact structure, reducing the volume of the transmitting module, and facilitating the separate packaging of the transmitting module to achieve a detachable connection with the beam output module.

[0075] In some embodiments of the present application, the klystron transformer 17 can be placed directly below the klystron 16 and covered together with the accelerator device in the housing 100 so that all components are integrated as a whole, and the switch extension 200 is placed outside the housing 100.

[0076] In some embodiments of the present application, the diameter of the accelerating tube 60 is 150 mm-230 mm, and the length of the accelerating tube 60 is 400 mm-550 mm. For example, in some embodiments, the diameter of the accelerating tube 60 can be 160 mm, 165 mm, 170 mm, 175 mm, 180 mm, 185 mm, 190 mm, 200 mm, 205 mm, 210 mm, 215 mm, 220 mm, 225 mm. In some embodiments, the length of the accelerating tube 60 can be 405mm, 410mm, 415mm, 420mm, 425mm, 430mm, 435mm, 440mm, 445mm, 450mm, 455mm, 460mm, 465mm, 470mm, 475mm, 480mm, 485mm, 490mm, 495mm, 500mm, 505mm, 510mm, 515mm, 520mm, 525mm, 530mm, 535mm, 540mm, 545mm.

[0077] In some embodiments of the present application, the diameter of the klystron 16 is 40 mm-60 mm, the length of the klystron is 800 mm-1200 mm, and the klystron performs heat exchange through natural wind. For example, in some embodiments, the diameter of the klystron 16 can be 45 mm, 50 mm, or 55 mm. In some embodiments, the length of the klystron 16 can be 850 mm, 900 mm, 950 mm, 1000 mm, 1050 mm, 1100 mm, or 1150 mm.

[0078] In the present application, the size of the klystron 16 is set to be relatively small, so that heat exchange can be performed through air cooling. Accordingly, the size of the klystron transformer can also be reduced, which is conducive to reducing the overall volume of the emission module, and then the volume of the first vacuum component 101 and the second vacuum component 12 used to maintain the vacuum state of the emission module can be set to be relatively small, so that the first vacuum component 101 can be directly connected to the input waveguide system 90, and the second vacuum component 12 can be directly connected to the load waveguide system 11, thereby achieving the compactness of the structure of the electron irradiation accelerator 1.

[0079] In the present application, the vacuum state of the emission module can be maintained by the vacuum system, and there is no need to set up additional vacuum components, thereby saving parts, saving space, and miniaturizing the device. Furthermore, the electron irradiation accelerator of the present application can be applied to the fields of letter sterilization, food sterilization, small postal sterilization, security inspection, book disinfection, etc. due to its miniaturization, expanding the use scenarios.

[0080] In some embodiments of the present application, the beam output module 20 may be disposed on the second side of the support body 401. A plurality of support frames 409 may be provided and located on the second side of the support body 401. The plurality of support frames 409 may be located on the circumference of the second side of the support body 401. Taking the support body 401 as a rectangle as an example, the plurality of support frames 409 may be located at the four corners of the rectangle, so as to stably support the support body 401.

[0081] like Figure 2 As shown, the support frame 409 may be rod-shaped, and the beam module 20 may be fixedly installed on the support frame 409 in a hanging manner. The hanging installation can simplify the installation procedure. Specifically, the beam module 20 may be installed on the support frame 409 after the support device 40 is installed, that is, the overall support is built first, and then the specific components are finely adjusted. Fine adjustment of the beam module 20 under the premise of a stable support can be more accurate and more convenient.

[0082] The electron beam emitted by the beam output module 20 is emitted through the beam output module 20 for irradiation. The beam output module 20 may include a scanning box 14, and the scanning box 14 is disposed on the support frame 409. The scanning box 14 may be installed in a hanging fixed manner, and its upper and lower positions may be fine-tuned according to the actual installation position error, thereby reducing the position accuracy requirement of the scanning box 14 installation and improving its installation efficiency.

[0083] In the present application, the vacuum group system includes a third vacuum component 15 , which is installed on the scanning box 14 .

[0084] In the present application, the third vacuum assembly 15 is installed on the scanning box 14, which is conducive to realizing the compactness of the beam output module structure and reducing the volume of the beam output module. At the same time, such an arrangement also facilitates the detachable connection between the beam output module and the emission module.

[0085] In the present application, the third vacuum component 15 may be a titanium pump, but the present disclosure is not limited thereto. In some embodiments, the third vacuum component 15 may also be other vacuum devices, or may be a vacuum pump made of other materials.

[0086] In this application, if Figure 2 As shown, the support frame 409 is fixedly mounted with a seventh support plate 410 for supporting the scanning magnet 19. The seventh support plate 410 is mounted with a scanning box suspension rod 412, which is used to fix the scanning box 14. The support frame 409 is equipped with an eighth support plate 411 for supporting and adjusting the third vacuum assembly 15.

[0087] Based on the same or similar concept, the present disclosure also provides an electron irradiation sterilization system 2 . Figure 3 The schematic diagram of the structure of the electron irradiation sterilization system provided in some other embodiments of the present application is as follows: Figures 1 to 3 As shown, the electron irradiation sterilization system 2 may include: the electron irradiation accelerator 1 as in the aforementioned embodiment; a transmission device 300, through which the object to be irradiated is transmitted, and the transmission device 300 passes through the electron irradiation accelerator, so that the electron irradiation accelerator 1 irradiates the object to be irradiated.

[0088] In this application, if Figures 1 to 3 As shown, the electron irradiation sterilization system 2 is mainly composed of a shell 100, a switch extension 200, a transmission device 300, a supporting device 40, an electron gun 50, an accelerating tube 60, a first focusing assembly 70, a second focusing assembly 80, an input waveguide system 90, a first vacuum assembly 101, a load waveguide system 11, a second vacuum assembly 12, a beam detection device 13, a scanning box 14, a third vacuum assembly 15, a klystron 16, a klystron transformer 17, an electron gun transformer 18, a scanning magnet 19, etc., wherein the accelerator main body bracket 4 is mainly composed of a supporting body 401, a second supporting plate 402, a ninth supporting plate 403, a sixth supporting plate 404, a first supporting plate 405, a third supporting plate 406, a fifth supporting plate 407, a fourth supporting plate 408, a supporting frame 409, a seventh supporting plate 410, an eighth supporting plate 411, and a scanning box suspension rod 412.

[0089] In this application, if Figure 1 and Figure 2 As shown, the first vacuum component (inlet titanium pump) 101 is connected to the input waveguide system 9, the second vacuum component (outlet titanium pump) 12 is connected to the load waveguide system 11, and the third vacuum component (scanning box titanium pump) 15 is installed on the scanning box 14. During operation, the vacuum degree of the accelerator is maintained by the titanium pumps at three positions.

[0090] In this application, if Figure 1 and Figure 2 As shown, the support device 40 is based on the support substrate 4011 of the support body 401, and the support body 401 is equipped with a second support plate 402, a ninth support plate 403, a sixth support plate 404, a first support plate 405, and a fourth support plate 408. The second support plate 402 is used to fix and support the first focusing assembly 70, and is designed with a first fine-tuning device 4021 in the up-down, front-back, left-right directions, which is used for leveling and centering the first focusing assembly 70. The third support plate 406 and the fifth support plate 407 are fixedly installed on the second support plate 402, which are used to support the first vacuum assembly 101 and the input waveguide system 90. The ninth support plate 403 is used to fix and support the second focusing assembly 80, and is designed with a second fine-tuning device 4031 in the up-down, front-back, left-right directions, which is used for leveling and centering the second focusing assembly 80. The support substrate 4011 supports the beam detection device 13.

[0091] In the present application, the electron irradiation accelerator has few device parts and a compact structure. All parts are placed in the outer shell to form a modular whole. The overall size is small, the structure is simple, and the operation is convenient, which is conducive to the formation of a miniaturized modular product.

[0092] In the present application, the main body of the electron irradiation accelerator is installed in a vertical manner, and its accelerating tube 60, focusing coil (first focusing component 70 and second focusing component 80), input waveguide system 90, load waveguide system 11, titanium pump (vacuum component, including first vacuum component 101, second vacuum component 12 and third vacuum component 15), beam detection device 13, scanning box 14 and other accelerator main structures are fixedly installed on the accelerator main body bracket (bracket 4001 and support frame 409).

[0093] In the present application, the accelerating tube is short, the vacuum components are few, and the total outlet area is small, so the selected titanium pump has a low pumping speed and a small size. The inlet titanium pump and the outlet titanium pump can be installed on the input waveguide system and the load waveguide system without adding additional vacuum adapter components, thereby effectively reducing the size of the accelerator device.

[0094] In this application, the klystron is small in size and does not require oil cooling, only air cooling is required, which can effectively reduce the size of the klystron transformer. The klystron transformer is placed directly below the klystron, and the high-voltage line interface is on the lower surface of the klystron, which can directly connect the klystron transformer to reduce the length of the high-voltage line. There are no other parts around to avoid sparking, and there is a certain space to ensure the heat dissipation of the klystron.

[0095] In the present application, the support body can be removed separately, including the electron gun, the electron gun transformer, the accelerating tube, the first focusing assembly, the second focusing assembly, the input waveguide system, the load waveguide system, the klystron, and the titanium pump, which can be packaged separately as a replaceable beam-emitting module. A target or a scanning box can be installed as required to form a complete accelerator device. The accelerating tube of this module is located above the substrate and does not need to be separately protected during installation and transportation, which is convenient and quick.

[0096] In the present application, the support body 401 includes a ninth support plate 403, which is located below the second support plate 402. The ninth support plate 403 is designed inside the support body, and the ninth support plate is designed with a second fine-tuning device 4031, which can be manually leveled and centered with the second focusing assembly 80.

[0097] In the present application, the scanning box is installed in a hanging fixed manner, and its upper and lower positions can be fine-tuned according to the actual installation position error, thereby reducing the position accuracy requirements of the scanning box installation and improving its installation efficiency.

[0098] In some embodiments of the present application, a ventilation channel is provided in the housing 100 , and the ventilation channel flows through the klystron to exchange heat with the klystron 16 .

[0099] In the present application, the vacuum state of the emission module is maintained by a vacuum system, and there is no need to set up additional vacuum components, thereby saving parts, saving space, and miniaturizing the device. Furthermore, the electron irradiation accelerator of the present application can be applied to the fields of letter sterilization, food sterilization, small postal sterilization, security inspection, book disinfection, etc. due to its miniaturization, expanding the use scenarios.

[0100] In the present application, the emission module and the beam-out module are configured to be detachably connected, which can facilitate later maintenance, component replacement, debugging, etc. In addition, since the emission module and the beam-out module are configured to be detachably connected, the emission module can be packaged separately as a replaceable beam-out module, and a target or a scanning box can be installed as required to form a complete accelerator device.

[0101] Through modularization and miniaturization of the electron irradiation accelerator, the volume of the electron irradiation sterilization system of the present application can also be reduced, and the construction difficulty can also be reduced, thereby increasing the use scenarios and reducing the difficulty of use. For example, in the present application, the volume of the electron irradiation sterilization system can be 100 square meters to 300 square meters.

[0102] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0103] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0104] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0105] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0106] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0107] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0108] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0109] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An electron irradiation accelerator, characterized in that: include: A support device, comprising a support body and a support frame, wherein the support body comprises a first side and a second side arranged opposite to each other, and the support frame is detachably arranged on the second side of the support body; An emission module, disposed on the first side of the support body, and configured to emit an electron beam; as well as The beam-emitting module is arranged on the supporting frame, and the electron beam emitted by the beam-emitting module is emitted through the beam-emitting module for irradiation.

2. The electron irradiation accelerator according to claim 1, characterized in that: The emission module comprises an electron gun, a focusing assembly, a beam detection device and an accelerating tube, wherein the electron gun, the focusing assembly, the beam detection device and the accelerating tube are coaxially arranged; The supporting body comprises a supporting substrate, and the beam detection device is arranged on the supporting substrate.

3. The electron irradiation accelerator according to claim 2, characterized in that: The support body comprises a bracket and a first support plate, the bracket is arranged on the first side of the support body, and the first support plate is arranged on the bracket; The emission module includes an electron gun transformer and a klystron, the output power of the klystron is fed into the accelerating tube, and the electron gun transformer and the klystron are arranged on the same side of the first supporting plate.

4. The electron irradiation accelerator according to claim 3, characterized in that: The focusing assembly includes a first focusing assembly; The support body includes: a second support plate, which is arranged on the bracket, the second support plate is located at an end of the support body away from the support frame, the first focusing assembly is arranged on the second support plate, and the second support plate is provided with an adjustment device, and the adjustment device is used to level the second support plate and make the first focusing assembly coaxial with the accelerating tube.

5. The electron irradiation accelerator according to claim 4, characterized in that: The electron irradiation accelerator comprises a vacuum system, the vacuum system is used to maintain the vacuum state of the electron irradiation accelerator, and the vacuum system comprises a first vacuum component and a second vacuum component; The support body includes a third support plate and a fourth support plate, the third support plate and the fourth support plate are both arranged on the bracket, the first vacuum component is arranged on the third support plate, the second vacuum component is arranged on the fourth support plate, the third support plate is arranged on the second support plate, and the second support plate is located at one end of the support body away from the support frame.

6. The electron irradiation accelerator according to claim 4, characterized in that: The transmitting device comprises an input waveguide system, and the input waveguide system is used to feed the output power of the klystron into the accelerating tube; The support body includes a fifth support plate, which is arranged on the bracket, the input waveguide system is arranged on the fifth support plate, the fifth support plate is arranged on the second support plate, and the second support plate is located at one end of the support body away from the support frame.

7. The electron irradiation accelerator according to claim 4, characterized in that: The electron irradiation accelerator comprises a klystron transformer. The klystron and the klystron transformer are connected via a high-voltage line, and an interface of the high-voltage line is located on a side of the klystron facing the klystron transformer.

8. The electron irradiation accelerator according to claim 5, characterized in that: The beam output module includes a scanning box, and the scanning box is arranged on the supporting frame; The vacuum group system includes a third vacuum component, and the third vacuum component is installed on the scanning box.

9. The electron irradiation accelerator according to any one of claims 5 to 8, characterized in that: The diameter of the accelerating tube is 150 mm-230 mm, and the length of the accelerating tube is 400 mm-550 mm; and / or The diameter of the klystron is 40 mm-60 mm, the length of the klystron is 800 mm-1200 mm, and the klystron performs heat exchange through natural wind; and / or The volume of the first vacuum component is 20L-30L, so that the first vacuum component is directly connected to the input waveguide system; and / or The transmitting module includes a load waveguide system, and the volume of the second vacuum component is 20L-30L, so that the second vacuum component is directly connected to the load waveguide system.

10. An electron irradiation sterilization system, characterized in that: include: The electron irradiation accelerator according to any one of claims 1 to 9; A transport device, through which the object to be irradiated is transported, and the transport device passes through the electron irradiation accelerator, so that the electron irradiation accelerator irradiates the object to be irradiated.

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