High-voltage power supply device applied to electrostatic deflection plate

Abstract

The invention relates to a high-voltage power supply device applied to an electrostatic deflection plate. The high-voltage power supply device comprises a high-voltage generating device and a high-voltage connecting device, the high-voltage generating device is used for performing electric energy conversion and transmission on accessed alternating current through a high-frequency inversion and soft switching technology; one end of the high-voltage connecting device is connected with the high-voltage generating device, the other end of the high-voltage connecting device is connected with the electrostatic deflection plate, and the high-voltage connecting device is used for outputting the stepped high-voltage electric energy output by the high-voltage generating device to the electrostatic deflection plate and ensuring the voltage resistance of the connecting part. The method can be widely applied to the nuclear technology field.

Description

Technical Field

[0001] The present invention belongs to the field of nuclear technology, and particularly relates to a high-voltage power supply device applied to an electrostatic deflection plate. Background Art

[0002] Heavy ion beams, with their Bragg peak effect and ultra-high relative biological effect, are becoming an innovative means of precision radiotherapy. They have the characteristics of high radiotherapy accuracy, short treatment courses, and low risk of recurrence, and are one of the most advanced and effective radiotherapy methods recognized internationally. A synchrotron is an important device for providing heavy ion beams with finely adjustable energy. Its development direction is miniaturization and low cost. As a core component of the injection system and the extraction system, the electrostatic deflection plate generates an electric field by applying a high voltage and provides a deflection force for the heavy ion beam, which is the key to determining the circumference of the synchrotron.

[0003] Currently, the high-voltage generators applied to electrostatic deflection plates mainly operate in a DC state and cannot meet the function of slow extraction of accelerator beams. Moreover, the traditional connection method between the high-voltage generator and the electrostatic deflection plate is to directly connect the high-voltage wire made of tetrafluoro material to the electrostatic deflection plate through a connector. Limited by the material, only an obtuse bending radius can be achieved. At the same time, the gap between the wire and the connector is often a weak point of high-voltage insulation, and the exposed wire is prone to breakdown of the surrounding air, affecting personal safety. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a high-voltage power supply device applied to an electrostatic deflection plate, which can output stepped high-voltage electricity and ensure reliable connection and withstand voltage performance with the electrostatic deflection plate.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A high-voltage power supply device applied to an electrostatic deflection plate, comprising: A high-voltage generating device and a high-voltage connecting device; The high-voltage generating device is used for converting electrical energy of the input alternating current through high-frequency inversion and soft-switching technology and outputting stepped high-voltage electrical energy; One end of the high-voltage connecting device is connected to the high-voltage generating device, and the other end is connected to the electrostatic deflection plate, for outputting the stepped high-voltage electrical energy output by the high-voltage generating device to the electrostatic deflection plate and ensuring the withstand voltage of the connection part at the same time.

[0006] Further, the high-voltage generating device includes a power frequency rectification module, a plurality of high-frequency inversion modules, a plurality of soft-switching modules, a plurality of high-frequency isolation transformer modules, a plurality of high-voltage switch output modules, and a control module; The power frequency rectification module is used for rectifying the input alternating current at power frequency to obtain a DC voltage; The high-frequency inverter modules and the soft-switching modules correspond one by one, and are used for converting electrical energy from DC voltage to meet the electrical energy requirements under different load conditions; Each of the high-frequency isolation transformer modules is connected in series, and its primary side is coupled with each soft-switching module, and the secondary side is coupled with two high-voltage switch output modules, for realizing high-frequency isolation; Each of the high-voltage switch output modules is used for realizing stepped high-voltage energy conversion output; The control module is used for controlling and adjusting the switching frequency of the soft-switching module and the switching timing of the high-voltage switch output module according to different load conditions or stepping requirements.

[0007] Furthermore, at the connection part between the electrostatic deflection plate and the high-voltage connection device, a first cavity inclined obliquely upward relative to the vacuum chamber is provided, and a socket for connecting the high-voltage connection device is formed in the first cavity.

[0008] Furthermore, the high-voltage connection device includes an insulating housing, a high-voltage cable, a high-voltage resistor, a high-voltage connector and an elastic conductive plug; At a preset position on the outer surface of the insulating housing, an annular protrusion is formed, and a sealing groove for installing a sealing ring is provided on the annular protrusion to realize the sealed connection between the annular protrusion and the first cavity on the electrostatic deflection plate; A second cavity is formed inside the insulating housing, and the second cavity is divided into an installation cavity and an adjustment cavity by a partition; The high-voltage cable is arranged in the installation cavity, and one end of the high-voltage cable is connected to the high-voltage generating device, and the other end of the high-voltage cable is electrically connected to the high-voltage resistor arranged in the adjustment cavity through a welded lantern-shaped pin; The other end of the high-voltage resistor is inserted and matched with the socket on the electrostatic deflection plate through the high-voltage connector and the elastic conductive plug.

[0009] Furthermore, the high-voltage connection device further includes a stepped connecting sleeve, one end of the connecting sleeve is inserted into the insulating housing and is detachably and sealingly connected to the adjustment cavity close to the high-voltage connector side; the other end of the connecting sleeve covers the high-voltage connector outside and is locked with the high-voltage connector through a locking member.

[0010] Furthermore, the high-voltage resistor is arranged in the adjustment cavity through a mounting seat, the mounting seat is made of a conductive material, along the length direction of the high-voltage connection device, one end of the mounting seat is provided with a mounting hole matching the lantern-shaped pin, and elastic pieces for tightly connecting with the mounting seat are arranged on the outer surface of the lantern-shaped pin; The other end of the mounting seat forms a mounting groove, and a conductive spring is arranged in the mounting groove, and the end of the conductive spring is electrically connected to the high-voltage resistor through a conductive cap.

[0011] Furthermore, a conductive core is provided between the high-voltage resistor and the high-voltage connector; The outer surface of the conductive core is provided with a stepped protrusion, and the high-voltage connector is provided with a snap-fit ​​groove matching the outer protrusion of the conductive core, so as to realize the snap-fitting of the conductive core and the high-voltage connector; The inner surface of the conductive core is also provided with a groove for clamping the high-voltage resistor.

[0012] Furthermore, an elastic member is provided between the conductive core and the high voltage connector to ensure reliable connection between the conductive core and the high voltage connector; The outer surface of the conductive plug is provided with an elastic member for ensuring reliable connection with the socket inside the electrostatic deflection plate.

[0013] Furthermore, an oil injection channel is provided on the insulating housing, and two ends of the oil injection channel are respectively located on two sides of the annular protrusion; A first through hole and a second through hole communicating with the oil injection passage are provided on one side of the insulating housing away from the annular protrusion, wherein the first through hole is an exhaust hole, and the second through hole is an inclined hole, which is used to extend from the oil injection passage into the cavity and inject oil into the cavity and extract insulating oil from the cavity; The portion of the insulating shell extending into the cavity of the electrostatic deflection plate is provided with a third through hole and a fourth through hole on its outer surface. The third through hole and the fourth through hole are respectively connected to the adjustment cavity to facilitate the insulating oil in the cavity to flow into the adjustment cavity.

[0014] Furthermore, an oil leakage hole is also provided on the groove wall of the mounting groove of the mounting seat, so as to ensure that all places in the regulating cavity can be completely filled with insulating oil.

[0015] The present invention adopts the above technical solution, which has the following advantages: 1. The high-voltage generating device proposed in the present invention can provide high voltage feed (>200kV) and high voltage dynamic adjustment (such as step-type) high voltage electricity for the electrostatic deflection plate within the control period through the design of high-frequency inverter module, soft switch module and high voltage switch output module; 2. The high-voltage connection device proposed in the present invention has high insulation performance while ensuring reliable conductivity, and can flexibly adjust the internal high-voltage matching resistor type according to actual needs, provide system overcurrent protection that meets the needs, and provide universal matching resistor installation conditions for electrostatic deflection plates with different structures and different working conditions.

[0016] In conclusion, the present invention can be widely applied in the field of nuclear technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference numerals are used to denote the same components. In the drawings: Figure 1 is a schematic structural diagram of a high-voltage power supply device applied to an electrostatic deflection plate provided in an embodiment of the present invention; Figure 2 is a schematic circuit principle diagram of a high-voltage generating device provided in an embodiment of the present invention; Figure 3 is a stepped high-voltage energy-changing waveform of an electrostatic deflection plate provided in an embodiment of the present invention; Figure 4 is a schematic connection structure diagram of a high-voltage connection device and an electrostatic deflection plate provided in an embodiment of the present invention; Figure 5 is a schematic cross-sectional structure diagram of a high-voltage connection device provided in an embodiment of the present invention; Figure 6 is Figure 5 a partial enlarged structure diagram at A in; The reference numerals in the figures are as follows: 1. Elastic conductive plug; 2. High-voltage joint; 3. Conductive core; 4. Connecting sleeve; 5. High-voltage resistor; 6. Conductive cap; 7. Conductive spring; 8. Mounting seat; 9. Lantern-shaped pin; 10. Insulating housing; 11. Oil injection channel; 12. First through hole; 13. Second through hole; 14. High-voltage cable sleeve; 15. Third through hole, 16. Fourth through hole; 17. Adjusting cavity; 18. Annular protrusion; 19. Sealing groove; 20. High-voltage cable. Detailed Embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0019] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] In some embodiments of the present invention, a high-voltage power supply device for an electrostatic deflection plate is provided, which includes a high-voltage generating device and a high-voltage connecting device. The high-voltage generating device provides a high-voltage power supply for the electrostatic deflection plate through high-frequency inversion and soft-switching technology; the high-voltage connecting device is specially designed for the electrostatic deflection plate load, has high insulation performance on the premise of ensuring reliable conductivity, and can flexibly adjust the type of internal high-voltage matching resistor according to actual needs, provide system overcurrent protection to meet the requirements, and provide a universal matching resistor installation condition for electrostatic deflection plates with different structures and different working conditions.

[0021] Embodiment 1

[0022] As Figure 1 shown, this embodiment provides a high-voltage power supply device for an electrostatic deflection plate, which includes: a high-voltage generating device and a high-voltage connecting device. Among them, the high-voltage generating device is used to convert and transmit electrical energy of the input 380V alternating current through high-frequency inversion and soft-switching technology; one end of the high-voltage connecting device is connected to the high-voltage generating device, and the other end is connected to the electrostatic deflection plate, and is used to output the stepped high-voltage electrical energy output by the high-voltage generating device to the electrostatic deflection plate, while ensuring the withstand voltage at the connection part.

[0023] Furthermore, as Figure 2 shown, the high-voltage generating device includes a power frequency rectification module (AC-DC), several high-frequency inversion modules, several soft-switching modules, several high-frequency isolation transformer modules, several high-voltage switch output modules, and a control module. Among them, the power frequency rectification module is used to perform power frequency rectification on the input 380V alternating current to obtain a DC voltage; the high-frequency inversion modules and the soft-switching modules are in one-to-one correspondence, and are used to convert and transmit electrical energy of the DC voltage to meet the electrical energy requirements under different load conditions; each high-frequency isolation transformer module is connected in series, and its primary side is coupled with each soft-switching module, and the secondary side is coupled with two high-voltage switch output modules, and is used to achieve high-frequency isolation; each high-voltage switch output module is used to achieve stepped high-voltage energy output; the control module is used to control and adjust the switching frequency of the soft-switching module and the switching timing of the high-voltage switch output module according to different load conditions or stepping requirements.

[0024] Furthermore, in this embodiment, the soft-switching module can adopt an LCC resonant converter.

[0025] Furthermore, the high-voltage switch output module includes a rectification module and a high-frequency filtering module. Among them, the rectification module and the high-frequency filtering module are respectively used to rectify and filter the high-voltage electrical energy output by the high-frequency isolation transformer.

[0026] In this embodiment, taking a 250 kV power supply as an example, there are 10 groups of high-frequency inverter modules, soft-switching modules and high-frequency isolation transformer modules, and 20 groups of high-voltage switch output modules. The voltage of a single high-voltage switch output module is only 1.25 kV; the normal output of the high-voltage generating device is a high-voltage DC source, with high stability and strong anti-spark ability.

[0027] As Figure 3 shown, it is the stepped high-voltage energy conversion waveform of the electrostatic deflection plate. Among them, T1 is the DC boost stage of the deflection plate power supply; T2 is the time period of the output change of the deflection plate power supply; T3 is the high-voltage drop time, which can be controlled within the microsecond level according to the response time of the high-voltage switch; T4 is the platform time, which can be adjusted arbitrarily according to requirements; N is the energy conversion step, and the number N = T2 / (T3 + T4).

[0028] Furthermore, the control module includes a soft-switching control module and a high-voltage switch control module.

[0029] Among them, the soft-switching control module is used to control the switching frequency of the LCC resonant converter, and a control method in the form of PSM can be adopted to enable the LCC resonant converter to maintain good performance under different load conditions. For example, at light load, the switching frequency can be reduced to improve efficiency; at heavy load, the switching frequency can be increased to meet the requirements of the output power. Thus, output high-voltage conversion and high-voltage isolation can be achieved.

[0030] The high-voltage switch control module is used to control each high-voltage switch in the high-voltage switch output module. For example, by controlling the high-voltage switch at the rear stage of the transformer, high-voltage rapid change can be achieved, and stepped high-voltage energy conversion can be realized. The high-voltage drop time of the high-voltage energy conversion can be controlled within the microsecond level according to the response time of different high-voltage switches. Or, in the shutdown mode, each high-voltage switch is selected to be turned off in sequence according to the stepping requirements to achieve stepped discharge and ensure safety.

[0031] Furthermore, to meet the actual needs, the high-voltage generating device can generate voltages up to several hundred kV, and the voltage withstand at the connection part between the electrostatic deflection plate and the high-voltage connection device is particularly important.

[0032] As Figure 4 shown, in this embodiment, the connection part between the electrostatic deflection plate and the high-voltage connection device is constructed as a cavity that slopes obliquely upward relative to the vacuum chamber, and a socket for connecting the high-voltage connection device is formed in the cavity.

[0033] Furthermore, as Figure 5 and Figure 6As shown in the figure, it is a schematic structural diagram of a high-voltage connection device. The high-voltage connection device includes an insulating housing 10, a high-voltage cable 20, a high-voltage resistor 5, a high-voltage connector 2, and an elastic conductive plug 1. Among them, a circular protrusion 18 is formed at a preset position on the outer surface of the insulating housing 10, and a sealing groove 19 for installing a sealing ring is provided on the circular protrusion 18 to achieve a sealed connection between the circular protrusion 18 and the cavity in the electrostatic deflection plate; a cavity is formed inside the insulating housing 10, and the cavity is divided into an installation cavity and an adjustment cavity 17 by a partition; the high-voltage cable 20 is arranged in the installation cavity, and one end of the high-voltage cable 20 is connected to a high-voltage generating device, and the other end of the high-voltage cable 20 is electrically connected to the high-voltage resistor 5 arranged in the adjustment cavity 17 through a welded lantern pin 9; the other end of the high-voltage resistor 5 is inserted and matched with the socket on the electrostatic deflection plate through the high-voltage connector 2 and the elastic conductive plug 1.

[0034] Furthermore, the high-voltage connection device further includes a stepped connecting sleeve 4. One end of the connecting sleeve 4 is inserted into the insulating housing 10 and is detachably and sealingly connected to the adjustment cavity 17 on the side close to the high-voltage connector 2; the other end of the connecting sleeve 4 covers the high-voltage connector 2 outside and is locked with the high-voltage connector 2 through a locking member.

[0035] Preferably, in this embodiment, an external thread is provided on the connecting sleeve 4, and an internal thread is provided in the adjustment cavity 17, and the two are threadedly connected. Connecting holes are respectively provided on the high-voltage connector 2 and the connecting sleeve 4, and a bolt can be used as a locking member to connect and lock the high-voltage connector 2 and the connecting sleeve 4. Through the above method, the assembly of the high-voltage connection device can be realized.

[0036] Furthermore, a high-voltage cable sleeve 14 is provided at the connection between the outside of the high-voltage cable 20 and the high-voltage generating device, which is used to keep the high-voltage cable 20 in a fixed shape and prevent damage to the high-voltage cable 20 when the high-voltage connection device is frequently plugged and unplugged.

[0037] Furthermore, the high-voltage resistor 5 is arranged in the adjustment cavity 17 through a mounting seat 8. The mounting seat 8 is made of a conductive material (such as copper). Along the length direction of the high-voltage connection device, one end of the mounting seat 8 is provided with a mounting hole matching the lantern pin 9, and a protruding elastic piece is provided on the outer surface of the lantern pin 9 for tightly connecting with the mounting seat 8; the other end of the mounting seat 8 forms a mounting groove, and a conductive spring 7 is arranged in the mounting groove. The end of the conductive spring 7 is electrically connected to the high-voltage resistor 5 through a conductive cap 6.

[0038] Furthermore, it should be noted that each structural part in the adjustment cavity 17 can be disassembled and replaced. Especially through the design of the conductive spring 7, it is possible to flexibly replace the high-voltage resistor 5 with different resistance values (the sizes of high-voltage resistors with different resistance values are inconsistent) according to actual needs, and the reliable electrical connection of the high-voltage resistor 5 is ensured through the conductive spring 7.

[0039] Further, a conductive core 3 is disposed between the high-voltage resistor 5 and the high-voltage connector 2. The outer surface of the conductive core 3 is provided with stepped protrusions, and the high-voltage connector 2 is provided with engaging grooves that match the external protrusions of the conductive core 3 for realizing the snap-fit between the conductive core 3 and the high-voltage connector 2; the inner surface of the conductive core 3 is also provided with a groove for snap-fitting the high-voltage resistor 5.

[0040] Furthermore, to ensure reliable electrical connection between the conductive core 3 and the high-voltage connector 2, an elastic member is also disposed between the conductive core 3 and the high-voltage connector 2. Thus, it can be ensured that the high-voltage resistor 5 is reliably connected between the high-voltage cable 20 and the electrostatic deflection plate.

[0041] Further, the outer surface of the elastic conductive plug 1 is provided with an outwardly convex elastic sheet structure to ensure reliable connection with the socket. When the high-voltage connection device is connected to the electrostatic deflection plate, the elastic conductive plug 1 is inserted and mated with the socket on the electrostatic deflection plate.

[0042] Further, the cross-sectional area of the portion of the high-voltage connection device extending into the cavity of the electrostatic deflection plate is smaller than the cross-sectional area of the cavity. To ensure the insulation and voltage withstand performance of the connection portion between the high-voltage connection device and the socket of the electrostatic deflection plate, after the high-voltage connection device is connected to the socket of the electrostatic deflection plate, an insulating liquid needs to be injected into the cavity and the internal gas is discharged.

[0043] As Figure 5 shown, to facilitate the injection of the insulating liquid from outside the cavity into the cavity, an oil injection channel 11 is provided on the insulating housing 10, and both ends of the oil injection channel 11 are respectively located on both sides of the annular protrusion 18. Among them, a first through hole 12 and a second through hole 13 communicating with the oil injection channel 11 are provided on the side of the insulating housing 10 away from the annular protrusion 18. The second through hole 13 is an inclined hole, which is convenient for the pipeline to extend from the oil injection channel 11 into the cavity, inject oil into the cavity and extract the insulating oil from the cavity. The first through hole 12 is an exhaust hole. After the oil injection is completed, the first through hole 12 and the second through hole 13 are blocked by an insulating plug.

[0044] The portion of the insulating housing 10 extending into the cavity of the electrostatic deflection plate has a third through hole 15 and a fourth through hole 16 provided on its outer surface. The third through hole 15 and the fourth through hole 16 communicate with the adjustment cavity 17 respectively, so that the insulating oil in the cavity can flow into the adjustment cavity 17. Among them, the third through hole 15 is located near the installation cavity.

[0045] Further, an oil leakage hole is also provided on the wall of the installation groove of the mounting seat 8 to ensure that all parts of the adjustment cavity 17 can be completely filled with the insulating liquid and guarantee the voltage withstand performance of the high-voltage connection device.

[0046] In this embodiment, the voltage range of the high-voltage device involved is 0 to 250 kV. More preferably, the high-voltage power supply device, high-voltage generating device, high-voltage connection device, high-voltage switch output module, high-voltage cable, high-voltage resistor, high-voltage connector, etc. in this embodiment all adopt the 250 kV grade.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A high-voltage power supply device applied to an electrostatic deflection plate, characterized in that, Comprising: A high-voltage generating device and a high-voltage connecting device; The high-voltage generating device is used to perform electric energy conversion on the accessed alternating current through high-frequency inversion and soft-switching technology, and output stepped high-voltage electric energy; One end of the high-voltage connecting device is connected to the high-voltage generating device, and the other end is connected to the electrostatic deflection plate, and is used to output the stepped high-voltage electric energy output by the high-voltage generating device to the electrostatic deflection plate, while ensuring the voltage withstand at the connection part.

2. The high-voltage power supply device applied to an electrostatic deflection plate according to claim 1, wherein The high-voltage generating device includes a power-frequency rectification module, a plurality of high-frequency inversion modules, a plurality of soft-switching modules, a plurality of high-frequency isolation transformer modules, a plurality of high-voltage switch output modules, and a control module; The power-frequency rectification module is used to perform power-frequency rectification on the accessed alternating current to obtain a direct-current voltage; The high-frequency inversion modules and the soft-switching modules are in one-to-one correspondence, and are used to perform electric energy conversion on the direct-current voltage to meet the electric energy requirements under different load conditions; Each of the high-frequency isolation transformer modules is connected in series, and its primary side is coupled to each soft-switching module, and the secondary side is coupled to two high-voltage switch output modules, and is used to achieve high-frequency isolation; Each of the high-voltage switch output modules is used to achieve stepped high-voltage energy output; The control module is used to control and adjust the switching frequency of the soft-switching module and the switching timing of the high-voltage switch output module according to different load conditions or stepping requirements.

3. A high-voltage power supply device applied to an electrostatic deflection plate as claimed in claim 1, characterized in that, At the connection part between the electrostatic deflection plate and the high-voltage connecting device, a first cavity inclined obliquely upward relative to the vacuum chamber is provided, and a socket for connecting the high-voltage connecting device is formed in the first cavity.

4. A high-voltage power supply device applied to an electrostatic deflection plate according to claim 3, characterized in that, The high-voltage connecting device includes an insulating housing, a high-voltage cable, a high-voltage resistor, a high-voltage connector, and an elastic conductive plug; A circular protrusion is formed at a preset position on the outer surface of the insulating housing, and a sealing groove for installing a sealing ring is provided on the circular protrusion to achieve sealed connection between the circular protrusion and the first cavity on the electrostatic deflection plate; A second cavity is formed inside the insulating housing, and the second cavity is divided into an installation cavity and an adjustment cavity by a partition; The installation cavity is provided with a high-voltage cable, and one end of the high-voltage cable is connected to the high-voltage generating device, and the other end of the high-voltage cable is electrically connected to the high-voltage resistor arranged in the adjustment cavity through a welded lantern-shaped pin; The other end of the high-voltage resistor is in plug-in fit with the socket on the electrostatic deflection plate through the high-voltage connector and the elastic conductive connector.

5. The high-voltage power supply device applied to an electrostatic deflection plate according to claim 4, characterized in that, The high-voltage connecting device further includes a stepped connecting sleeve, one end of the connecting sleeve is inserted into the insulating housing and is detachably and sealedly connected to the adjustment cavity close to the high-voltage connector side; the other end of the connecting sleeve covers the high-voltage connector outside and is locked with the high-voltage connector through a locking member.

6. The high-voltage power supply device applied to the electrostatic deflection plate according to claim 4, characterized in that, The high-voltage resistor is arranged in the adjustment cavity through a mounting seat, the mounting seat is made of a conductive material, along the length direction of the high-voltage connecting device, one end of the mounting seat is provided with a mounting hole matching the lantern-shaped pin, and the outer surface of the lantern-shaped pin is provided with elastic pieces for tightly connecting with the mounting seat; A mounting groove is formed at the other end of the mounting seat, a conductive spring is arranged in the mounting groove, and an end of the conductive spring is electrically connected to the high-voltage resistor through a conductive cap.

7. The high-voltage power supply device applied to an electrostatic deflection plate according to claim 4, characterized in that, A conductive core is also provided between the high-voltage resistor and the high-voltage connector; The outer surface of the conductive core is provided with a stepped protrusion, and the high-voltage connector is provided with a snap-fit ​​groove matching the outer protrusion of the conductive core, so as to realize the snap-fitting of the conductive core and the high-voltage connector; The inner surface of the conductive core is also provided with a groove for clamping the high-voltage resistor.

8. A high-voltage power supply device applied to an electrostatic deflection plate as claimed in claim 7, characterized in that, An elastic member is provided between the conductive core and the high-voltage connector to ensure reliable connection between the conductive core and the high-voltage connector; The outer surface of the conductive plug is provided with an elastic member for ensuring reliable connection with the socket inside the electrostatic deflection plate.

9. The high-voltage power supply device applied to the electrostatic deflection plate according to claim 4, characterized in that, The insulating shell is provided with an oil injection channel, and two ends of the oil injection channel are respectively located on two sides of the annular protrusion; A first through hole and a second through hole communicating with the oil injection passage are provided on one side of the insulating housing away from the annular protrusion, wherein the first through hole is an exhaust hole, and the second through hole is an inclined hole, which is used to extend from the oil injection passage into the cavity and inject oil into the cavity and extract insulating oil from the cavity; The portion of the insulating shell extending into the cavity of the electrostatic deflection plate is provided with a third through hole and a fourth through hole on its outer surface. The third through hole and the fourth through hole are respectively connected to the adjustment cavity to facilitate the insulating oil in the cavity to flow into the adjustment cavity.

10. A high-voltage power supply device applied to an electrostatic deflection plate according to claim 6, characterized in that, The groove wall of the mounting groove of the mounting seat is also provided with oil leakage holes for ensuring that all places in the regulating cavity can be completely filled with insulating oil.

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