Linear marx generator mechanism and marx generator

Abstract

The application provides a linear Marx generator core and a Marx generator, and aims at solving the technical problems of long length, complicated assembly and disassembly process, long time consumption and the like of the existing Marx generator core. The core comprises a support module, a core module and a shielding module; the core module comprises N single-stage cores, wherein N is greater than or equal to 1; each single-stage core comprises two single-stage fixed plates arranged in parallel, one gas switch, two capacitors, two capacitor ground plates and a resistor assembly; two adjacent single-stage cores share one single-stage fixed plate and one capacitor ground plate, the two capacitors are respectively arranged on the inner side surfaces of the two single-stage fixed plates, and a capacitor insulating plate is arranged between the two capacitors; the support module is arranged below the core module and is used for supporting the core module; and the shielding module is arranged outside the core module and is used for providing a required shielding field for the core module.

Description

Technical Field

[0001] This invention relates to a high-voltage pulse generating device, specifically to a linear Marx generator mechanism and a Marx generator. Background Technology

[0002] Marx generators, as high-voltage pulse generating devices, are widely used in the field of pulse power technology. The most important component of a Marx generator is its core mechanism, which typically consists of multiple capacitors and gas switches connected in series alternately. Marx generator core mechanisms used in high-power electromagnetic pulse testing equipment usually employ a gas-insulated, linearly arranged structure. This linear arrangement of the core mechanism creates a large stray capacitance to ground with the generator's metal outer cavity, facilitating the stable and reliable establishment of the Marx generator.

[0003] Existing linear generators achieve higher voltage output levels by increasing the number of serially inserted unit components. However, as the number of serially inserted unit components increases, the length of the Marx generator mechanism also increases, leading to problems such as uneven charging and excessive inductance in the discharge circuit.

[0004] In addition, the existing generator mechanism must be installed one stage at a time in sequence. Only after the switches and capacitors of the previous stage are installed can the next stage be installed. Similarly, when a fault occurs and disassembly is required, multiple connectors must be removed to replace the switches and capacitors of the faulty stage. The assembly and disassembly process is cumbersome and time-consuming. Summary of the Invention

[0005] The purpose of this invention is to provide a linear Marx generator mechanism and a Marx generator, which solves the technical problems of existing Marx generator mechanisms being too long, having complicated assembly and disassembly processes, and being time-consuming.

[0006] The technical solution of this invention is: A linear Marx generator mechanism is characterized in that it includes a support module, a mechanism module, and a shielding module; the support module is located below the mechanism module and is used to support the mechanism module. The mechanism module includes N single-stage mechanisms, where N≥1; each single-stage mechanism includes two parallel single-stage fixing plates, a gas switch, two capacitors, two capacitor ground plates, and a resistor assembly; two adjacent single-stage mechanisms share a single-stage fixing plate and a capacitor ground plate. Two capacitors are respectively installed on the inner sides of two single-stage fixing plates, and a capacitor insulating plate is provided between the two capacitors; the capacitor insulating plate is arranged parallel to the single-stage fixing plate, and the lower sides of both are snapped onto the support module; the two ends of the gas switch are respectively fixed above the two capacitors through the first connector, and are respectively connected to the top of the two capacitors; the two capacitor ground plates are respectively located at the bottom of the two capacitors and are connected to the bottom of the corresponding capacitors. The resistor assembly includes four charging resistors and one grounding resistor. The four charging resistors are arranged in pairs above two capacitors. One end of each of the two charging resistors corresponding to each capacitor is connected to the top of the capacitor, and the other end is connected to the top of the two adjacent capacitors in front of and behind the capacitor. In the single-stage mechanism located at both ends, the other end of one of the charging resistors corresponding to the two capacitors in one end of the single-stage mechanism is connected to an external power supply, while the other end of one of the charging resistors corresponding to the two capacitors in the other end of the single-stage mechanism is disconnected. The grounding resistor is located below one of the capacitors, and its two ends are connected to the bottom of the corresponding capacitor through a capacitor ground plane. The shielding module is located on the outside of the movement module and is used to provide the necessary shielding field for the movement module.

[0007] Furthermore, the thickness of the capacitor is less than 4 cm, the thickness of the gas switch is less than or equal to 8 cm, the thickness of the single-stage fixing plate is less than 1.5 cm, and the thickness of the capacitor insulating plate is less than 1.2 cm.

[0008] Furthermore, the shielding module includes N shielding covers disposed on the outside of N single-stage mechanisms and corresponding to each of them, and a grounding shielding component corresponding to each capacitor; Each shield is fixed to one of the single-stage fixing plates in the corresponding single-stage mechanism via a second connector; one end of each grounding shield is connected to the bottom of the corresponding capacitor via a capacitor ground plane, and the other end of any one of the two grounding shields corresponding to each single-stage mechanism is connected to the shield corresponding to the single-stage mechanism in which it is located.

[0009] Furthermore, the upper part of the single-stage fixing plate has multiple first grooves, and two adjacent shields share a second connector. The second connector is snapped into the first groove of the single-stage fixing plate corresponding to any one of the two adjacent shields.

[0010] Furthermore, the support module includes a support base and two parallel mounting beams disposed on the support base; the support base includes two parallel load-bearing plates connected by multiple load-bearing plate fasteners; the two mounting beams are respectively disposed directly above the two load-bearing plates and connected to the corresponding load-bearing plates by multiple support rods; the two mounting beams are connected by multiple mounting beam fasteners; multiple equally spaced second grooves are respectively provided on the two mounting beams, and the lower sides of the capacitor insulating plate and the single-stage fixing plate are respectively engaged in the corresponding second grooves.

[0011] Furthermore, two wheels are installed under each load-bearing plate to support the movement of the module.

[0012] Furthermore, the upper end of each support rod is fixed to the corresponding mounting beam, and the lower end is connected to the corresponding load-bearing plate through a fixing block; the upper end of the fixing block is connected to the lower end of the support rod, and the lower end of the fixing block is provided with a third groove for engaging the corresponding load-bearing plate, the width of the third groove being adapted to the thickness of the corresponding load-bearing plate.

[0013] Furthermore, the mounting beam, mounting beam fastener, fastener, load-bearing plate, load-bearing plate fastener, support rod, wheel, and second connector are made of nylon, fiberglass, or plexiglass.

[0014] Furthermore, the first connector, capacitor ground plane, shielding cover, and grounding shield are made of aluminum, brass, or stainless steel.

[0015] The present invention also provides a linear Marx generator, which is characterized in that it includes a generator housing and the aforementioned linear Marx generator mechanism disposed within the generator housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the linear Marx generator core of the present invention, each single-stage core includes two parallel single-stage fixing plates, a gas switch, two capacitors, two capacitor ground plates, and a resistor assembly. The two capacitors are respectively mounted on the inner side of the two single-stage fixing plates, and two adjacent single-stage cores share one single-stage fixing plate. A capacitor insulating plate is provided between the two capacitors. One end of each of the two charging resistors corresponding to each capacitor is connected to the capacitor, and the other end is connected to the two capacitors adjacent to the capacitor. The generator core structure of the present invention can provide stable high-voltage pulses while having a more compact overall structure, and the assembly and disassembly processes are more convenient.

[0017] 2. In the linear Marx generator core of the present invention, the thickness of the capacitor is less than 4cm, the thickness of the gas switch is less than or equal to 8cm, the thickness of the single-stage fixing plate is less than 1.5cm, and the thickness of the capacitor insulating plate is less than 1.2cm, which reduces the total thickness of each single-stage core and thus shortens the total length of the generator core, making it easier to generate more stable high-voltage pulses.

[0018] 3. In the linear Marx generator mechanism of the present invention, a support module is set below the mechanism module, and wheels are also provided under the load-bearing plate of the support module, which makes the Marx generator mechanism movable as a whole, which is more conducive to assembly and maintenance, thereby improving work efficiency.

[0019] 4. In the linear Marx generator mechanism of this invention, the distance between the two capacitors of each single-stage mechanism is minimized. During the discharge process of the mechanism, there are currents in opposite directions inside the discharge circuit, which achieves the purpose of reducing the inductance of the mechanism discharge circuit. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment of a linear Marx generator mechanism according to the present invention.

[0021] Figure 2 This is a schematic diagram of the assembly structure of the mechanism module and the shielding module in an embodiment of a linear Marx generator mechanism of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of a single-stage mechanism in an embodiment of a linear Marx generator mechanism of the present invention. Figure 1 .

[0023] Figure 4 This is a schematic diagram of the structure of a single-stage mechanism in an embodiment of a linear Marx generator mechanism of the present invention. Figure 2 .

[0024] Figure 5 This is a schematic diagram of the capacitor structure in an embodiment of a linear Marx generator mechanism according to the present invention.

[0025] Figure 6 This is a schematic diagram of the connection state of two adjacent shields in an embodiment of a linear Marx generator mechanism of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of a single-stage fixed plate in an embodiment of a linear Marx generator mechanism according to the present invention.

[0027] Figure 8 This is a schematic diagram of the support module in an embodiment of a linear Marx generator mechanism according to the present invention.

[0028] The attached figures are labeled as follows: 1-Support module, 11-Support base, 111-Bearing plate, 112-Bearing plate fastener, 113-Support rod, 114-Wheel, 12-Mounting beam, 121-Second groove, 13-Mounting beam fastener, 14-Fixing block, 141-Third groove; 2-Mechanism module, 21-Single-stage mechanism, 211-Single-stage fixing plate, 212-Gas switch, 213-Capacitor, 214-First groove, 22-Capacitor insulation plate, 23-First connector, 24-Capacitor grounding plate; 3-Shielding module, 31-Shielding cover, 32-Second connector, 33-Grounding shield. Detailed Implementation

[0029] The following detailed description of a linear Marx generator mechanism and a Marx generator proposed in this invention, in conjunction with the accompanying drawings and specific embodiments, is provided. It should be noted that the terms "first," "second," "third," etc., are used for descriptive purposes only and do not imply their relative importance.

[0030] like Figure 1 As shown, this embodiment provides a linear Marx generator mechanism, including a support module 1, a mechanism module 2, and a shielding module 3, wherein the support module 1 is located below the mechanism module 2 and is used to support the mechanism module 2.

[0031] Combination Figures 1 to 5 As shown, the mechanism module 2 includes 14 single-stage mechanisms 21, spaced three times apart for external inductors. These three spaces can be removed if no external inductor is needed. Each single-stage mechanism 21 includes two parallel single-stage fixing plates 211, a gas switch 212, two capacitors 213, two capacitor ground planes 24, and a resistor assembly. Adjacent single-stage mechanisms 21 share one single-stage fixing plate 211.

[0032] Two capacitors 213 are respectively mounted on the inner sides of two single-stage fixing plates 211. Specifically, each capacitor 213 has four protrusions. Using the through holes in the centers of these four protrusions, the capacitors 213 and the single-stage fixing plates 211 (corresponding mounting holes need to be provided on the single-stage fixing plates 211 at the locations where the through holes of the capacitors 213 are located) can be bolted together to form a whole. In this case, the capacitor ground plate 24 can be fixed by screws to the underside of the corresponding capacitor 213. Alternatively, the capacitor ground plate 24 can be directly fixed to the bottom of the single-stage fixing plate 211 with nylon screws, and then the capacitors 213 can be fixed to the capacitor ground plate 24 with screws. In this case, no bolts are needed to fix the capacitors 213 and the single-stage fixing plates 211.

[0033] A capacitor insulating plate 22 is provided between the two capacitors 213. The capacitor insulating plate 22 is arranged parallel to the single-stage fixing plate 211, and its lower side is snapped onto the support module 1. In this embodiment, the thickness of each capacitor 213 is less than 4cm, the thickness of the capacitor insulating plate 22 is less than 1.2cm, and the thickness of the single-stage mechanism 21 is no more than 10cm. This shortens the overall length of the linear Marx generator mechanism, making the overall structure smaller and more compact.

[0034] In this embodiment, an output adapter board is also mounted on the capacitor ground plane 24 of the last single-stage mechanism 21 by screws. The output adapter board is used to connect external devices.

[0035] The two ends of the gas switch 212 are fixed above the two capacitors 213 by the first connector 23 and are respectively connected to the top of the two capacitors 213. The thickness of each gas switch 212 is less than or equal to 8cm.

[0036] Each mechanism module 2 contains four charging resistors and one grounding resistor. The charging and grounding resistors can be flexible resistors, with specific values ​​determined by actual requirements. The four charging resistors are positioned in pairs above the two capacitors 213. One end of each charging resistor corresponding to a capacitor 213 is connected to the top of that capacitor 213, and the other end is connected to the tops of the two adjacent capacitors 213. In the single-stage mechanisms 21 located at both ends, the other end of one charging resistor corresponding to the two capacitors 213 at one end (i.e., the input terminal of the first-stage single-stage mechanism) is connected to an external power supply. The other end of one charging resistor corresponding to the two capacitors 213 at the other end (i.e., the output terminal of the last-stage single-stage mechanism) is disconnected (i.e., not connected, or a charging resistor is provided on each of the two capacitors 213 of the last-stage single-stage mechanism to connect to the two capacitors 213 corresponding to the previous stage single-stage mechanism), thus achieving series charging of the entire mechanism.

[0037] Combination Figure 2 and Figure 6 As shown, the shielding module 3 includes N shielding covers 31 disposed on the outside of N single-stage mechanisms 21 and corresponding to them one by one, and a grounding shield 33 corresponding to each capacitor 213.

[0038] Each shield 31 is fixed to one of the single-stage fixing plates 211 in the corresponding single-stage mechanism 21 by a second connector 32.

[0039] One end of each grounding shield 33 is connected to the corresponding capacitor 213 via a capacitor ground plane 24. The other end of any one of the two grounding shields 33 corresponding to each single-stage mechanism 21 is connected to the shielding cover 31 corresponding to its single-stage mechanism 21. The selection of the grounding shield 33 and the shielding cover 31 can be made according to the actual shielding field strength requirements.

[0040] The grounding resistor is set below one of the capacitors 213, and its two ends are respectively connected to the bottom of the corresponding capacitor 213 through the capacitor ground plane 24.

[0041] like Figure 4 and Figure 7 As shown, the upper part of the single-stage fixing plate 211 has multiple first grooves 214. A second connector 32 is shared between two adjacent shielding covers 31. The second connector 32 is snapped into the first groove 214 on the single-stage fixing plate 211 corresponding to any one of the adjacent shielding covers 31. The thickness of each single-stage fixing plate 211 is less than 1.5 cm. The first grooves 214 can also be used to place connecting gas pipes and charging resistors between gas switches 212.

[0042] like Figure 8 As shown, the support module 1 includes a support base 11 and two parallel mounting beams 12 disposed on the support base 11. The support base 11 includes two parallel load-bearing plates 111, which are connected by multiple load-bearing plate fasteners 112. The two mounting beams 12 are respectively disposed directly above the two load-bearing plates 111 and are connected to the corresponding load-bearing plates 111 by multiple support rods 113; the two mounting beams 12 are connected by multiple mounting beam fasteners 13.

[0043] Each of the two mounting beams 12 has multiple equally spaced second grooves 121. The lower sides of the capacitor insulation plate 22 and the single-stage fixing plate 211 each have notches corresponding to the second grooves 121. The fit between the notches and the second grooves 121 allows the ends of the capacitor insulation plate 22 and the single-stage fixing plate 211 to be respectively engaged with the corresponding mounting beams 12. They can then be tightened with screws as needed. The number of second grooves 121 on each mounting beam 12 is equal to the number of single-stage fixing plates 211 plus the number of capacitor insulation plates 22.

[0044] Two wheels 114 are also installed under each load-bearing plate 111 to support the movement of the module 1. The wheels 114 are generally fixed to the corresponding load-bearing plate 111 by bolts.

[0045] The upper end of each support rod 113 is fixed to the corresponding mounting beam 12 by a threaded connection, and the lower end is connected to the corresponding load-bearing plate 111 by a fixing block 14. The upper end of the fixing block 14 is connected to the lower end of the support rod 113. The lower end of the fixing block 14 is provided with a third groove 141 for engaging the corresponding load-bearing plate 111 and is fastened by bolts. The groove width of the third groove 141 is adapted to the thickness of the corresponding load-bearing plate 111.

[0046] In this embodiment, the mounting beam 12, mounting beam fixing component 13, fixing block 14, load-bearing plate 111, load-bearing plate fixing component 112, support rod 113, wheel 114, and second connecting component 32 are made of nylon, fiberglass, or plexiglass.

[0047] The first connector 23, capacitor ground plane 24, shielding cover 31, and grounding shield 33 are made of aluminum, brass, or stainless steel.

[0048] In this embodiment, the withstand voltage of capacitor 213 is not less than 100kV, the withstand voltage of gas switch 212 is not less than 100kV, and after capacitor insulation plate 22 is installed on mounting beam 12, its length extending out of capacitor ground plate 24 is not less than 4cm, and its upper part is not less than 2cm higher than capacitor 213, so that the withstand voltage of single-stage mechanism 21 is not less than 100kV.

[0049] This embodiment also provides a linear Marx generator, including a generator housing and a linear Marx generator mechanism as described in this embodiment disposed within the generator housing.

[0050] The linear Marx generator core and Marx generator of this embodiment, through reasonable structural design, ensure that the thickness of a single stage is no greater than 10cm and the withstand voltage of a single stage is no less than 100kV. Marx generator cores of any number of stages can be assembled by linearly arranging and stacking them. This core structure is simple and reliable. Compared with traditional structures, it is simpler in structure, easier to assemble, and the final assembly is movable, effectively reducing installation and maintenance time and improving work efficiency.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the present invention.

Claims

1. A linear Marx generator mechanism, characterized in that: It includes a support module (1), a movement module (2) and a shielding module (3); the support module (1) is located below the movement module (2) and is used to support the movement module (2). The mechanism module (2) includes N single-stage mechanisms (21), where N≥1; each single-stage mechanism (21) includes two parallel single-stage fixing plates (211), a gas switch (212), two capacitors (213), two capacitor ground plates (24), and a resistor assembly; two adjacent single-stage mechanisms (21) share a single-stage fixing plate (211) and a capacitor ground plate (24); Two capacitors (213) are respectively installed on the inner sides of two single-stage fixing plates (211), and a capacitor insulating plate (22) is provided between the two capacitors (213); the capacitor insulating plate (22) is arranged parallel to the single-stage fixing plate (211), and the lower sides of both are snapped onto the support module (1); the two ends of the gas switch (212) are respectively fixed above the two capacitors (213) through the first connector (23), and are respectively connected to the top of the two capacitors (213); two capacitor ground plates (24) are respectively located at the bottom of the two capacitors (213) and are connected to the bottom of the corresponding capacitors (213); The resistor assembly includes four charging resistors and one grounding resistor; the four charging resistors are arranged in pairs above the two capacitors (213), one end of each of the two charging resistors corresponding to each capacitor (213) is connected to the top of the capacitor (213), and the other end is connected to the top of the two adjacent capacitors (213) before and after the capacitor (213); in the single-stage mechanism (21) located at both ends, the other end of one of the charging resistors corresponding to the two capacitors (213) of one end of the single-stage mechanism (21) is connected to an external power supply, and the other end of one of the charging resistors corresponding to the two capacitors (213) of the other end of the single-stage mechanism (21) is disconnected; the grounding resistor is arranged below one of the capacitors (213), and its two ends are connected to the bottom of the corresponding capacitor (213) through the capacitor grounding plate (24); The shielding module (3) is located outside the movement module (2) and is used to provide the required shielding field for the movement module (2).

2. The linear Marx generator mechanism according to claim 1, characterized in that: The thickness of the capacitor (213) is less than 4 cm, the thickness of the gas switch (212) is less than or equal to 8 cm, the thickness of the single-stage fixing plate (211) is less than 1.5 cm, and the thickness of the capacitor insulating plate (22) is less than 1.2 cm.

3. The linear Marx generator mechanism according to claim 2, characterized in that: The shielding module (3) includes N shielding covers (31) disposed on the outside of N single-stage cores (21) and corresponding to them one by one, and a grounding shield (33) corresponding to each capacitor (213). Each shield (31) is fixed to one of the single-stage fixing plates (211) in the corresponding single-stage mechanism (21) via a second connector (32); one end of each ground shield (33) is connected to the bottom of the corresponding capacitor (213) via a capacitor ground plate (24), and the other end of any one of the two ground shields (33) corresponding to each single-stage mechanism (21) is connected to the shield (31) corresponding to the single-stage mechanism (21) it is located in.

4. The linear Marx generator mechanism according to claim 3, characterized in that: The upper part of the single-stage fixing plate (211) has multiple first grooves (214), and two adjacent shields (31) share a second connector (32). The second connector (32) is snapped into the first groove (214) on the single-stage fixing plate (211) corresponding to any one of the two adjacent shields (31).

5. The linear Marx generator mechanism according to claim 4, characterized in that: The support module (1) includes a support base (11) and two parallel mounting beams (12) disposed on the support base (11). The support base (11) includes two parallel load-bearing plates (111), which are connected by multiple load-bearing plate fasteners (112); two mounting beams (12) are respectively positioned directly above the two load-bearing plates (111) and are connected to the corresponding load-bearing plates (111) by multiple support rods (113); the two mounting beams (12) are connected by multiple mounting beam fasteners (13); The two mounting beams (12) are respectively provided with a plurality of equally spaced second grooves (121), and the lower sides of the capacitor insulating plate (22) and the single-stage fixing plate (211) are respectively engaged in the corresponding second grooves (121).

6. The linear Marx generator mechanism according to claim 5, characterized in that: Two wheels (114) are also installed under each load-bearing plate (111) for supporting the movement of the module (1).

7. The linear Marx generator mechanism according to claim 6, characterized in that: The upper end of each support rod (113) is fixed to the corresponding mounting beam (12), and the lower end is connected to the corresponding load-bearing plate (111) through a fixing block (14). The upper end of the fixing block (14) is connected to the lower end of the support rod (113), and the lower end of the fixing block (14) is provided with a third groove (141) for engaging the corresponding load-bearing plate (111). The groove width of the third groove (141) is adapted to the thickness of the corresponding load-bearing plate (111).

8. The linear Marx generator mechanism according to claim 7, characterized in that: The mounting beam (12), mounting beam fixing component (13), fixing block (14), load-bearing plate (111), load-bearing plate fixing component (112), support rod (113), wheel (114), and second connecting component (32) are made of nylon, fiberglass, or plexiglass.

9. The linear Marx generator mechanism according to claim 3, characterized in that: The first connector (23), capacitor ground plane (24), shield (31), and grounding shield (33) are made of aluminum, brass, or stainless steel.

10. A linear Marx generator, characterized in that: Includes a generator housing and a linear Marx generator mechanism as described in any one of claims 1-9 disposed within the generator housing.

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