X-ray high-voltage generator

Abstract

The invention provides an X-ray high-voltage generator. The X-ray high-voltage generator comprises a resonance module; wherein the resonance module comprises a first inductor, a first capacitor and a second inductor which are connected in series at a primary winding of the high-voltage transformer; the first inductor and the second inductor form a common mode inductor, and the common mode inductor is an annular hollow inductor. According to the X-ray high-voltage generator provided by the invention, the problems of magnetic saturation risk, temperature sensitivity, magnetic core eddy current loss and the like of an existing resonance circuit are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage generators, and particularly to an X-ray high-voltage generator. Background Art

[0002] The main function of an X-ray high-voltage generator is to provide a DC high voltage and a filament voltage for an X-ray tube, thereby generating X-rays; among them, the resonant circuit composed of a magnetic core inductor is the frequency conversion part of the X-ray high-voltage generator. In high-current application scenarios, for example, in high-current application scenarios with an average current of 300A - 700A and a peak current of 700A - 1400A, the resonant circuit usually uses magnetic core inductors such as ferrite, iron powder or alloy powder.

[0003] However, when the above magnetic core inductors are applied to high-current scenarios, they have the following disadvantages. First, the risk of magnetic saturation: the magnetic core is prone to saturation under high current or strong magnetic fields, resulting in a sharp drop in inductance, and the working conditions need to be strictly designed; second, temperature sensitivity: the magnetic permeability of the magnetic core material changes with temperature, which may affect the inductance stability. For example, the performance of ferrite degrades at high temperatures; third, magnetic core eddy current loss, the magnetic core is an insulator or a material with high resistivity, but there are grain boundaries, impurities or defects in its microstructure to form local conduction paths. Under an alternating magnetic field, closed-loop eddy currents will be induced inside the magnetic core, and these eddy currents will generate non-negligible heat loss through the Joule effect when flowing through the conductive area. This loss belongs to the process of converting electromagnetic energy into useless heat energy, directly weakening the energy conversion efficiency and current-carrying capacity of the inductor; fourth, high cost: high-performance magnetic core materials, such as nanocrystals, amorphous alloys, etc., will greatly increase the cost.

[0004] It should be noted that the above introduction of the technical background is only for the convenience of clearly and completely explaining the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the present invention. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide an X-ray high-voltage generator for solving the problems such as the risk of magnetic saturation, temperature sensitivity, and magnetic core eddy current loss existing in the existing resonant circuit.

[0006] To achieve the above object and other related objects, the present invention provides an X-ray high-voltage generator, which includes: A resonant module, including a first inductor, a first capacitor and a second inductor, which are connected in series at the primary winding of a high-voltage transformer; Among them, the first inductor and the second inductor form a common-mode inductor, and the common-mode inductor is a toroidal air-core inductor.

[0007] Optionally, the toroidal air-core inductor includes: A toroidal air-core skeleton, which is divided into a first winding area and a second winding area by a separator; A first stranded wire, wound around the first winding area in a first direction to form the first inductor; A second stranded wire, wound around the second winding area in a second direction to form the second inductor; Among them, the first direction and the second direction are opposite.

[0008] Optionally, the toroidal air-core inductor further includes: A first fixing member for fixing the first stranded wire to the first winding area; A second fixing member for fixing the second stranded wire to the second winding area.

[0009] Optionally, the toroidal air-core skeleton includes: a first toroidal skeleton housing and a second toroidal skeleton housing, which are snapped together to form the toroidal air-core skeleton.

[0010] Optionally, the separator includes: Two first isolation parts, symmetrically arranged on the first toroidal skeleton housing; Two second isolation parts, symmetrically arranged on the second toroidal skeleton housing; Among them, when the first toroidal skeleton housing and the second toroidal skeleton housing are snapped together, the corresponding first isolation part and the second isolation part are butted together.

[0011] Optionally, the first isolation part is arranged in an L shape on the inner surface and the upper surface of the first toroidal skeleton housing, and the second isolation part is arranged in an L shape on the inner surface and the upper surface of the second toroidal skeleton housing; or, the first isolation part is arranged in a U shape on the surface of the first toroidal skeleton housing, and the second isolation part is arranged in a U shape on the surface of the second toroidal skeleton housing.

[0012] Optionally, the first isolation part and the first toroidal skeleton housing are integrally formed, and the second isolation part and the second toroidal skeleton housing are integrally formed.

[0013] Optionally, the first stranded wire and the second stranded wire are copper stranded wires or silver-plated stranded wires. Among them, the number of strands of the wire in the corresponding stranded wire is between 200 strands and 300 strands, and the diameter of a single wire is between 0.1 mm and 0.3 mm.

[0014] Optionally, the toroidal air-core inductor further includes: a non-magnetic medium, filled in the toroidal air-core skeleton.

[0015] Optionally, the X-ray high-voltage generator further includes: An inverter module, connected to the input end of the resonant module, and based on a variable voltage and variable frequency control method, converts the input direct current into alternating current for output; The resonant module performs high-frequency resonance processing on the alternating current output by the inverter module; A high-voltage oil tank, connected to the output end of the resonant module, boosts and rectifies the alternating current output by the resonant module to generate a direct high voltage and supplies it to the X-ray tube.

[0016] As described above, the X-ray high-voltage generator of the present invention, through the design of the first inductor and the second inductor in the resonant module, enables the resonant module to have no risk of magnetic saturation, no core eddy current loss, and high temperature stability. At the same time, the design is simple and the cost is low. The X-ray high-voltage generator of the present invention, based on a variable voltage and variable frequency control method, can adjust the resonant frequency, soft switching, dynamic impedance matching, and optimize the gain characteristics, realizing efficient and wide-range energy conversion. Description of the Drawings

[0017] Figure 1 It shows a circuit schematic diagram of the X-ray high-voltage generator in an embodiment of the present invention.

[0018] Figure 2 It shows a structural schematic diagram of the toroidal air-core inductor in an embodiment of the present invention.

[0019] Figure 3 It shows a structural schematic diagram of the toroidal air-core skeleton before buckling in an embodiment of the present invention.

[0020] Figure 4 It shows a structural schematic diagram of the toroidal air-core skeleton after buckling in an embodiment of the present invention.

[0021] Element number description: 10 X-ray high-voltage generator, 100 resonant module, 110 toroidal air-core skeleton, 110a first winding area, 110b second winding area, 111 first toroidal skeleton housing, 112 second toroidal skeleton housing, 113 toroidal flat plate, 114 toroidal inner wall, 115 toroidal outer wall, 120 separator, 121 first separation part, 122 second separation part, 130 first stranded wire, 140 second stranded wire, 150 first fixing part, 160 second fixing part, 200 inverter module, 210 H-bridge unit, 220 inverter control unit, 300 high-voltage oil tank, 310 first voltage multiplier unit, 320 second voltage multiplier unit, 330 high-voltage lead-out unit, 331 anode cable socket, 332 cathode cable socket, 340 filament power supply, 350 first detection unit, 360 second detection unit, 400 X-ray tube. Detailed Embodiments

[0022] The following describes the implementation manners of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0023] Please refer to Figures 1 to 4 . It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The form, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the layout form of its components may also be more complex.

[0024] As Figure 1 shown, this embodiment provides an X-ray high-voltage generator 10, including a resonance module 100. Further, it further includes an inverter module 200 and a high-voltage oil tank 300.

[0025] The resonance module 100 is used to perform high-frequency resonance processing on the alternating current output by the inverter module 200 to filter out high-frequency harmonics and generate an alternating current close to a sine wave.

[0026] Specifically, the resonance module 100 includes a first inductor L1, a first capacitor C1, and a second inductor L2, and the three are connected in series at the primary winding of the high-voltage transformer TH. For example, the first end of the first inductor L1 is used as the first input end of the resonance module 100, the second end of the first inductor L1 is connected to the first end of the first capacitor C1, the second end of the first capacitor C1 is connected to the first end of the second inductor L2 through the primary winding of the high-voltage transformer TH, and the second end of the second inductor L2 is used as the second input end of the resonance module 100.

[0027] Among them, the first inductor L1 and the second inductor L2 form a common-mode inductor, and this common-mode inductor is a toroidal air-core inductor. Through the design of the common-mode inductor, common-mode noise can be better suppressed or even canceled. In addition, when the common-mode inductor is designed as a toroidal air-core inductor: due to no magnetic core material limitation, it can withstand extremely large currents without saturation, that is, there is no risk of magnetic saturation, and it is suitable for high-power and high-linearity application scenarios; without a magnetic core, the Joule effect will not occur, that is, there is no magnetic core eddy current loss, which can greatly reduce power loss and improve power supply efficiency; also, without a magnetic core, the inductance is hardly affected by temperature, and the temperature stability is high.

[0028] In one implementation manner, as Figures 2 to 4As shown, the toroidal air-core inductor includes a toroidal air-core skeleton 110, a spacer 120, a first stranded wire 130, and a second stranded wire 140; further, it also includes a first fixing member 150 and a second fixing member 160.

[0029] The toroidal air-core skeleton 110 is divided into a first winding area 110a and a second winding area 110b by the spacer 120. In one example, the toroidal air-core skeleton 110 includes a first toroidal skeleton housing 111 and a second toroidal skeleton housing 112, which are snapped together to form the toroidal air-core skeleton 110, as Figure 3 and Figure 4 shown; wherein, after the first toroidal skeleton housing 111 and the second toroidal skeleton housing 112 are snapped together, a chamber will be formed inside, and moreover, the chamber uses air as the medium; of course, the chamber may not use air as the medium, but use a non-magnetic material (for example, ceramics, quartz, etc.) as the medium. At this time, the toroidal air-core inductor also includes a non-magnetic medium filled in the toroidal air-core skeleton 110. In practical applications, the materials of the first toroidal skeleton housing 111 and the second toroidal skeleton housing 112 are the same, which is temperature-resistant and fireproof nylon.

[0030] Specifically, as Figure 3 shown, the structures of the first toroidal skeleton housing 111 and the second toroidal skeleton housing 112 are the same, including a toroidal flat plate 113, a toroidal inner side wall 114, and a toroidal outer side wall 115, wherein the toroidal inner side wall 114 and the toroidal outer side wall 115 are respectively vertically provided at the inner diameter and the outer diameter of the toroidal flat plate 113.

[0031] In addition, the first toroidal skeleton housing 111 and the second toroidal skeleton housing 112 are also provided with snap-fitting positioning members (not shown in the figure) for cooperation. For example, at least one position of the toroidal flat plate 113 in the first toroidal skeleton housing 111 is provided with a hollow cylinder, and a mating cylinder is provided at the corresponding position of the toroidal flat plate 113 in the second toroidal skeleton housing 112. By inserting the mating cylinder into the hollow cylinder, the snap-fitting positioning of the first toroidal skeleton housing 111 and the second toroidal skeleton housing 112 can be realized. Of course, the snap-fitting positioning members can also have other implementation manners, and no more restrictions are imposed on this. In practical applications, each part in the first toroidal skeleton housing 111 and the second toroidal skeleton housing 112 is usually integrally formed.

[0032] The spacer 120 includes a first spacer portion 121 and a second spacer portion 122, as Figure 3 and Figure 4As shown in the figure; wherein, the number of the first isolation parts 121 and the second isolation parts 122 is two each. Specifically, the two first isolation parts 121 are symmetrically arranged on the first annular skeleton housing 111, and the two second isolation parts 122 are symmetrically arranged on the second annular skeleton housing 112. When the first annular skeleton housing 111 and the second annular skeleton housing 112 are buckled, the corresponding first isolation part 121 and the second isolation part 122 are butted together.

[0033] In one example, as Figure 3 and Figure 4 shown, the first isolation part 121 is arranged in an L shape on the inner surface and the upper surface of the first annular skeleton housing 111, and the second isolation part 122 is arranged in an L shape on the inner surface and the upper surface of the second annular skeleton housing 112; at this time, in the first annular skeleton housing 111 and the second annular skeleton housing 112, the corresponding isolation part straddles the surfaces of the annular flat plate 113 and the annular inner side wall 114 in the corresponding annular skeleton housing.

[0034] In another example, the first isolation part 121 is arranged in a U shape on the surface of the first annular skeleton housing 111, and the second isolation part 122 is arranged in a U shape on the surface of the second annular skeleton housing 112, not shown in the figure; at this time, in the first annular skeleton housing 111 and the second annular skeleton housing 112, the corresponding isolation part straddles the surfaces of the annular flat plate 113, the annular inner side wall 114 and the annular outer side wall 115 in the corresponding annular skeleton housing.

[0035] In practical applications, the first isolation part 121 and the second isolation part 122 are made of the same material, which is heat-resistant and fireproof nylon; in addition, the first isolation part 121 and the first annular skeleton housing 111 are integrally formed, and the second isolation part 122 and the second annular skeleton housing 112 are integrally formed.

[0036] The first stranded wire 130 is wound around the first winding area 110a in the first direction to form the first inductor L1, as Figure 2 shown; wherein, connection terminals are respectively led out from both ends of the first stranded wire 130. For example, the connection terminal L1_1 serves as the first end of the first inductor L1, and the connection terminal L1_2 serves as the second end of the first inductor L1.

[0037] In one example, the first stranded wire 130 is a copper stranded wire or a silver-plated stranded wire; wherein, the number of strands of the wire in the first stranded wire 130 is between 200 strands and 300 strands (including the two end values), and the diameter of a single wire is between 0.1 mm and 0.3 mm (including the two end values); as an optional solution, the number of strands of the wire in the first stranded wire 130 is 250 strands, and the diameter of a single wire is 0.2 mm. Further, the first stranded wire 130 is fixed to the first winding area 110a through the first fixing member 150, as Figure 2As shown. In one example, the first fixing member 150 is a binding tape.

[0038] The second stranded wire 140 is wound around the second winding region 110b in a second direction to form a second inductor L2, where the first direction and the second direction are opposite, as Figure 2 shown; in addition, connection terminals are respectively led out from both ends of the second stranded wire 140. For example, the connection terminal L2_1 serves as the first end of the second inductor L2, and the connection terminal L2_2 serves as the second end of the second inductor L2.

[0039] In one example, the second stranded wire 140 is a copper stranded wire or a silver-plated stranded wire; among them, the number of strands of the wires in the second stranded wire 140 is between 200 strands and 300 strands (including both end values), and the diameter of a single wire is between 0.1 mm and 0.3 mm (including both end values); as an optional solution, the number of strands of the wires in the second stranded wire 140 is 250 strands, and the diameter of a single wire is 0.2 mm. Further, the second stranded wire 140 is fixed to the second winding region 110b by a second fixing member 160, as Figure 2 shown. In one example, the second fixing member 160 is a binding tape.

[0040] Among them, the inductance values of the first inductor L1 and the second inductor L2 are equal. Since the magnetic core material parameters do not need to be considered, the inductance value is mainly determined by the number of turns, diameter, and length of the corresponding stranded wire; in practical applications, usually the number of turns, diameter, and length of the two stranded wires are designed to be equal. At this time, the inductance value can be adjusted by adjusting the number of turns, and the number of turns is often designed in combination with specific application scenarios; in addition, when winding the corresponding number of turns, it can be wound in a single-layer manner or a multi-layer manner, and there are no excessive restrictions on this. Winding the toroidal air-core inductor with a stranded wire is beneficial to reducing the skin effect and proximity effect caused by using the toroidal air-core inductor, so that the toroidal air-core inductor can be applied to the resonance module 100 without significantly increasing the eddy current loss.

[0041] The inverter module 200 is connected to the input end of the resonance module 100 and converts the input direct current into alternating current output based on the variable voltage and variable frequency control method.

[0042] Specifically, the inverter module 200 includes an H-bridge unit 210 and an inverter control unit 220. Among them: The H-bridge unit 210 switches the current direction through switch control and converts the input direct current into alternating current output; the inverter control unit 220 performs switch control on the H-bridge unit 210 based on the variable voltage and variable frequency control method.

[0043] In one example, the H-bridge unit 210 includes a first switching transistor Q1, a second switching transistor Q2, a third switching transistor Q3, and a fourth switching transistor Q4. The control terminal of the first switching transistor Q1 receives a first switching control signal VVVF1. The first terminal of the first switching transistor Q1 is connected to the positive electrode of the input voltage Vin. The second terminal of the first switching transistor Q1 is connected to the first terminal of the second switching transistor Q2 and serves as the second output terminal of the inverter module 200. The control terminal of the second switching transistor Q2 receives a second switching control signal VVVF2. The second terminal of the second switching transistor Q2 is connected to the negative electrode of the input voltage Vin. The control terminal of the third switching transistor Q3 receives a third switching control signal VVVF3. The first terminal of the third switching transistor Q3 is connected to the positive electrode of the input voltage Vin. The second terminal of the third switching transistor Q3 is connected to the first terminal of the fourth switching transistor Q4 and serves as the first output terminal of the inverter module 200. The control terminal of the fourth switching transistor Q4 receives a fourth switching control signal VVVF4. The second terminal of the fourth switching transistor Q4 is connected to the negative electrode of the input voltage Vin. Among them, the switching control signals VVVF1 to VVVF4 are provided by the inverter control unit 220. Further, the H-bridge unit 210 further includes a second capacitor C2 for performing input filtering on the input voltage Vin. Among them, the first terminal of the second capacitor C2 is connected to the positive electrode of the input voltage Vin, and the second terminal of the second capacitor C2 is connected to the negative electrode of the input voltage Vin.

[0044] The high-voltage oil tank 300 is connected to the output terminal of the resonance module 100, boosts and rectifies the alternating current output by the resonance module 100 to generate a high DC voltage, and supplies it to the X-ray tube 400.

[0045] Specifically, the high-voltage oil tank 300 includes a high-voltage transformer TH, a first voltage multiplier unit 310, a second voltage multiplier unit 320, a high-voltage lead-out unit 330, and a filament power supply 340. Further, it also includes a first detection unit 350 and a second detection unit 360.

[0046] The high-voltage transformer TH is used to boost and output the alternating current output by the resonance module 100. Among them, the primary winding is connected between the first capacitor C1 and the second inductor L2 in the resonance module 100. The first secondary winding is connected to the first voltage multiplier unit 310, and the second secondary winding is connected to the second voltage multiplier unit 320.

[0047] The first voltage-doubling unit 310 is used to perform voltage-doubling rectification on the alternating current output by the first secondary winding to obtain the anode DC high voltage. In one example, the first voltage-doubling unit 310 includes a first diode D1, a second diode D2, a third capacitor C3, and a fourth capacitor C4. Among them, the anode terminal of the first diode D1 is connected to the cathode terminal of the second diode D2 and the same-named terminal of the first secondary winding. The cathode terminal of the first diode D1 is sequentially connected to the anode terminal of the second diode D2 through the third capacitor C3 and the fourth capacitor C4 and serves as the output terminal of the first voltage-doubling unit 310. The connection node of the third capacitor C3 and the fourth capacitor C4 is connected to the different-named terminal of the first secondary winding.

[0048] The second voltage-doubling unit 320 is used to perform voltage-doubling rectification on the alternating current output by the second secondary winding to obtain the cathode DC high voltage. In one example, the second voltage-doubling unit 320 includes a third diode D3, a fourth diode D4, a fifth capacitor C5, and a sixth capacitor C6. Among them, the anode terminal of the third diode D3 is connected to the cathode terminal of the fourth diode D4 and the same-named terminal of the second secondary winding. The cathode terminal of the third diode D3 is sequentially connected to the anode terminal of the fourth diode D4 through the fifth capacitor C5 and the sixth capacitor C6. The anode terminal of the fourth diode D4 also serves as the output terminal of the second voltage-doubling unit 320. The connection node of the fifth capacitor C5 and the sixth capacitor C6 is connected to the different-named terminal of the second secondary winding.

[0049] The high-voltage extraction unit 330 is used to extract the anode DC high voltage output by the first voltage-doubling unit 310 and the cathode DC high voltage output by the second voltage-doubling unit 320. In one example, the high-voltage extraction unit 330 includes an anode cable socket 331 and a cathode cable socket 332. Among them, the anode cable socket 331 is connected to the output terminal of the first voltage-doubling unit 310, and the cathode cable socket 332 is connected to the output terminal of the second voltage-doubling unit 320. By extracting the DC high voltage (including the anode DC high voltage and the cathode DC high voltage), a high-voltage target electric field required for electron acceleration is provided for the X-ray tube 400.

[0050] The filament power supply 340, which is connected to the cathode cable socket 332, is used to supply power to the filament in the X-ray tube 400, heat the filament, and generate electrons, so as to drive the X-ray tube 400 to emit X-rays under the action of the high-voltage target electric field.

[0051] The first detection unit 350 is used to detect the anode DC high voltage. In one example, the first detection unit 350 includes a first resistor R1, a second resistor R2, a third resistor R3, a fifth diode D5, and a sixth diode D6. The first end of the first resistor R1 is connected to the connection node of the fourth capacitor C4 and the second diode D2. The second end of the first resistor R1 is respectively connected to the anode end of the fifth diode D5, the first end of the second resistor R2, and the first end of the third resistor R3. The cathode end of the fifth diode D5 is connected to the cathode end of the sixth diode D6. The anode end of the sixth diode D6 is connected to the second end of the second resistor R2 and the second end of the third resistor R3. Among them, the second resistor R2 is an adjustable resistor.

[0052] The second detection unit 360 is used to detect the cathode DC high voltage. In one example, the second detection unit 360 includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh diode D7, and an eighth diode D8. The first end of the fourth resistor R4 is connected to the connection node of the fifth capacitor C5 and the third diode D3. The second end of the fourth resistor R4 is respectively connected to the anode end of the seventh diode D7, the first end of the fifth resistor R5, and the first end of the sixth resistor R6. The cathode end of the seventh diode D7 is connected to the cathode end of the eighth diode D8. The anode end of the eighth diode D8 is connected to the second end of the fifth resistor R5 and the second end of the sixth resistor R6. The anode end of the eighth diode D8 is also connected to the anode end of the sixth diode D6 in the first detection unit 350. Among them, the fifth resistor R5 is an adjustable resistor.

[0053] In summary, for an X-ray high-voltage generator of the present invention, through the design of the first inductor and the second inductor in the resonance module, there is no risk of magnetic saturation, no magnetic core eddy current loss, and high temperature stability in the resonance module. At the same time, the design is simple and the cost is low. The X-ray high-voltage generator of the present invention, based on the variable voltage and variable frequency control method, can adjust the resonance frequency, soft switching, dynamic impedance matching, and optimize the gain characteristics to achieve efficient and wide-range energy conversion. Therefore, the present invention effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0054] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An X-ray high-voltage generator, characterized in that, The X-ray high-voltage generator includes: A resonance module, including a first inductor, a first capacitor, and a second inductor, which are connected in series at the primary winding of the high-voltage transformer; the first inductor and the second inductor form a common-mode inductor, and the common-mode inductor is a toroidal air-core inductor; Wherein, the toroidal air-core inductor includes: A toroidal air-core skeleton, which is divided into a first winding area and a second winding area by an isolation member; A first stranded wire, wound around the first winding area in a first direction to form the first inductor; A second stranded wire, wound around the second winding area in a second direction to form the second inductor; Wherein, the first direction and the second direction are opposite.

2. The X-ray high-voltage generator according to claim 1, characterized in that, The toroidal air-core inductor further includes: A first fixing member, fixing the first stranded wire to the first winding area; A second fixing member, fixing the second stranded wire to the second winding area.

3. The X-ray high voltage generator according to claim 1, characterized in that, The toroidal air-core skeleton includes: a first toroidal skeleton housing and a second toroidal skeleton housing, which are buckled to form the toroidal air-core skeleton.

4. The X-ray high-voltage generator according to claim 3, characterized in that, The isolation member includes: Two first isolation parts, symmetrically arranged on the first toroidal skeleton housing; Two second isolation parts, symmetrically arranged on the second toroidal skeleton housing; Wherein, when the first toroidal skeleton housing and the second toroidal skeleton housing are buckled, the corresponding first isolation part and the second isolation part are butted together.

5. The X-ray high-voltage generator according to claim 4, characterized in that, The first isolation part is arranged in an L shape on the inner surface and the upper surface of the first toroidal skeleton housing, and the second isolation part is arranged in an L shape on the inner surface and the upper surface of the second toroidal skeleton housing; or, the first isolation part is arranged in a U shape on the surface of the first toroidal skeleton housing, and the second isolation part is arranged in a U shape on the surface of the second toroidal skeleton housing.

6. The X-ray high voltage generator according to claim 4, characterized in that, The first isolation part and the first toroidal skeleton housing are integrally formed, and the second isolation part and the second toroidal skeleton housing are integrally formed.

7. The X-ray high-voltage generator according to claim 1, characterized in that, The first stranded wire and the second stranded wire are copper stranded wires or silver-plated stranded wires. Among them, the number of strands of the wire in the corresponding stranded wire is between 200 strands and 300 strands, and the diameter of a single wire is between 0.1 mm and 0.3 mm.

8. The X-ray high-voltage generator according to any one of claims 1 to 7, characterized in that, The toroidal air-core inductor further includes: a non-magnetic medium, filled in the toroidal air-core skeleton.

9. The X-ray high-voltage generator according to claim 1, characterized in that, The X-ray high-voltage generator further includes: An inverter module, connected to the input end of the resonance module, and based on the variable voltage and variable frequency control method, converting the input direct current into alternating current for output; The resonance module performs high-frequency resonance processing on the alternating current output by the inverter module; A high-voltage oil tank, connected to the output end of the resonance module, boosting and rectifying the alternating current output by the resonance module to generate a direct current high voltage and supplying it to the X-ray tube.

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