Grounding device for an impulse voltage generator

Abstract

This application discloses a grounding device for an impulse voltage generator, relating to the field of power detection technology. It includes a power component, a transmission component, and a multi-stage grounding assembly. The power component comprises a main motor and an auxiliary motor; the transmission component includes a cross-shaped transmission rod, an insulating chain, a driving gear, and a driven gear; the multi-stage grounding assembly includes conductive rods and grounding rods. The main motor drives the cross-shaped transmission rod to rotate the driving gear and the insulating chain, which in turn drives the driven gear to rotate the conductive rods at each stage synchronously, achieving rapid switching between combined and separate grounding; the auxiliary motor drives the insulating chain to move horizontally to control the working state of the transmission component, achieving stage selection control. This application can effectively solve the problems of slow operation, high failure rate, unreliable contact, impact on inter-stage insulation distance, and inability to automatically change the working stages of the impulse voltage generator in existing grounding devices, improving testing efficiency and safety.

Description

Technical Field

[0001] This application relates to the field of power detection technology, and in particular to a grounding device for an impulse voltage generator. Background Technology

[0002] Electrical equipment is a key facility for ensuring the efficient, safe, and stable operation of power systems. In the research, development, production, operation, and maintenance of electrical equipment, impulse voltage generators, as important high-voltage testing equipment, utilize the principle of parallel charging and series discharging of main capacitors to generate standard impulse voltage waveforms such as lightning waves and switching waves to verify whether the insulation performance of electrical equipment meets relevant standard requirements. The grounding device, as a crucial component of the impulse voltage generator, directly affects the personal safety of testing personnel and the efficiency of the test.

[0003] In existing technical solutions, the discharge purpose is usually achieved by short-circuiting the main capacitors at each stage by moving a conductor vertically along the impulse voltage generator. For example, some solutions use a motor to drive a pulley to rotate, realizing the mutual conversion between steel wire rope and nylon rope, and pulling the main capacitor or connecting it to the ground through the rope; other solutions use a multi-stage grounding device that moves vertically, using a pneumatic device to drive the insulating rod to move up and down, causing the conductive spring on the insulating rod to extend and retract, short-circuiting the two stages of capacitors, thereby forming a discharge circuit to the ground.

[0004] However, in the existing technology, the above-mentioned grounding methods still have limitations in terms of operating time, contact reliability, and impact on the insulation distance between the main capacitor stages. When the impulse voltage generator has a large number of stages, the process of closing and opening grounding is time-consuming due to step-by-step contact or long-stroke vertical movement, which affects the test efficiency. At the same time, the flexible rope structure is prone to entanglement or wear, and the spring structure may shorten the insulation distance between stages or pose a risk of potential energy release under compression. Furthermore, in the open grounding state, there is a lack of intuitive physical break points for visual confirmation, which poses challenges to the safety and reliability of the test operation. Summary of the Invention

[0005] In view of the above problems, this application provides a grounding device for an impulse voltage generator, which is a multi-stage fast grounding device for impulse voltage generators with high reliability, rapid action, wide adaptability, and high level of intelligence, to ensure the safety of test personnel and equipment and effectively improve test efficiency. The specific solution is as follows:

[0006] This application provides a grounding device for an impulse voltage generator, the impulse voltage generator including an impulse voltage generator base and an N-stage main capacitor, where N≥2 and N is a positive integer;

[0007] The grounding device of the impulse voltage generator includes a power component, a transmission component, and a multi-segment grounding component;

[0008] The power assembly includes a main motor and an auxiliary motor mounted on the base of the impulse voltage generator;

[0009] The transmission assembly includes a cross-shaped transmission rod, an insulated chain, a driving gear, and a driven gear;

[0010] The cross-shaped transmission rod is linked to the main motor, and the main motor is used to drive the cross-shaped transmission rod to rotate.

[0011] The insulating chain is installed on both sides of the main capacitor and is linked with the auxiliary motor. The auxiliary motor is used to drive the insulating chain to move horizontally in order to control the working state of the transmission assembly.

[0012] The driving gear is mounted at both ends of the cross-shaped transmission rod, and the driven gear is mounted on each stage of the main capacitor. The driving gear and the driven gear mounted on each stage of the main capacitor are in the same vertical plane and are connected to each other by the insulating chain.

[0013] The transmission assembly has a first working state. In the first working state, the main motor controls the cross-shaped transmission rod to drive the drive gear to rotate, which in turn drives the insulating chain to rotate, thereby driving the driven gear to drive the conductive rods at each stage to rotate synchronously, and to switch between grounding and disconnection.

[0014] The multi-segment grounding assembly includes: M conductive rods and grounding rods; wherein, M=2N;

[0015] M conductive rods are electrically connected to both sides of the N-stage main capacitor, and both the conductive rods and the grounding rod are linked to the driven gear.

[0016] Based on the grounding command, the M conductive rods and the grounding rod are synchronously rotated clockwise around the center to a vertical position under the drive of the driven gear, so that the conductive rods connected to the main capacitors at each level contact the conductive rods connected to the adjacent main capacitors, and the conductive rod of the lowest level main capacitor contacts the grounding rod.

[0017] Based on the grounding command, the M conductive rods and the grounding rod are synchronously rotated counterclockwise around the center to a horizontal position under the drive of the driven gear, so that the M conductive rods and the grounding rod are in a non-contact state and the main capacitors at each level are in an insulated state.

[0018] In one possible implementation, the insulating chain includes a chain portion, an insulating rope portion, a fixed slide rail, a support rod, and an auxiliary gear; the fixed slide rail is installed on both sides of each stage of the main capacitor, the support rod is installed on the fixed slide rail for horizontal movement, the auxiliary gear, the chain portion, and the insulating rope portion are installed inside the support rod, the auxiliary gear is located at the upper and lower ends of the support rod, the chain portion and the insulating rope portion are connected end to end, and the auxiliary gear fixes the chain portion and the insulating rope portion; the auxiliary motor is linked with the lower auxiliary gear, and based on control commands, controls the auxiliary motor and the support rod to move horizontally, and / or controls the auxiliary gear to rotate to switch between the chain portion and the insulating rope portion;

[0019] In the first working state, the chain section is connected to the driving gear and the driven gear respectively. The main motor controls the cross-shaped transmission rod to drive the driving gear to rotate, which in turn drives the insulating chain to rotate, so as to drive the driven gear to drive the conductive rods of each stage to rotate synchronously, and to switch between grounding and disconnection.

[0020] The transmission assembly also includes a second working state. In the second working state, the insulating chain and the auxiliary motor are controlled to move horizontally together. After the chain part is disconnected from the driving gear and the driven gear, the auxiliary motor drives the auxiliary gear to rotate, controlling the chain part and the insulating rope part to switch between each other. After the switch is completed, the system switches back to the first working state, thereby realizing the selection control of the working level of the impulse voltage generator.

[0021] In one possible implementation, the multi-segment grounding assembly further includes: a bearing and a connecting pin;

[0022] The M conductive rods are electrically connected to both sides of each stage of the main capacitor via the connecting pins and the bearings;

[0023] The outer shaft of the bearing is electrically connected to the main capacitor, and the inner shaft of the bearing is electrically connected to the circular insert of the connecting pin. One side of the conductive rod is connected to the connecting pin, and the other side is connected to the convex fixing surface of the driven gear. The cross-shaped insert of the connecting pin passes through the cross-shaped through hole of the conductive rod and the cross-shaped through hole of the driven gear in sequence, and is fixed by a target nut that matches the thread designed on the cross-shaped insert of the connecting pin.

[0024] In one possible implementation, the length of the cross-shaped insert of the connecting pin is greater than the total thickness of the conductive rod, the driven gear, and the target nut.

[0025] In one possible implementation, the conductive rod includes an upper conductive rod, a hollow structure, and a lower conductive rod;

[0026] The upper conductive rod and the lower conductive rod are respectively installed on both sides of the hollow structure based on the fastening screw holes.

[0027] In one possible implementation, the upper conductive rod is provided with an elastic structure and a concave-convex contact surface, and the lower conductive rod is provided with the elastic structure and the concave-convex contact surface.

[0028] In one possible implementation, the impulse voltage generator further includes: an impulse voltage generator support;

[0029] The impulse voltage generator support is mounted on the impulse voltage generator base, and the N-stage main capacitor is fixed on the impulse voltage generator support.

[0030] In one possible implementation, the length of the cross-shaped transmission rod is greater than the length of the main capacitor.

[0031] In one possible implementation, the transmission assembly further includes a fixing structure;

[0032] The cross-shaped transmission rod is fixed to the base of the impulse voltage generator based on the fixed structure.

[0033] In one possible implementation, the two ends of the cross-shaped transmission rod are provided with threads;

[0034] The drive gear is fixed to both ends of the cross-shaped transmission rod by nuts.

[0035] By employing the aforementioned technical solution, this application provides a grounding device for an impulse voltage generator. Through the design of a collaborative architecture comprising a power component, a transmission component, and a multi-segment grounding component, it achieves efficient and reliable grounding of the impulse voltage generator. Specifically, a main motor drives a cross-shaped transmission rod to rotate, which in turn drives the active gear and transmits power to each stage of driven gears via an insulated chain. This allows the M conductive rods and the grounding rod to rotate synchronously around the center. This rigid-flexible coupling transmission method avoids interference from traditional rope tension or spring potential energy, ensuring the synchronicity and accuracy of the action. Based on the grounding command, the conductive rod rotates clockwise to bring the adjacent main capacitor conductive rods and the lowest-level conductive rod into contact with the grounding rod, quickly forming a complete discharge circuit. Based on the grounding command, the conductive rod rotates counterclockwise to reset to a horizontal non-contact state, not only restoring the insulation distance between each stage of the main capacitors but also creating a clear physical break for visual confirmation. This effectively solves the problems of slow operation, high failure rate, poor contact, easy jamming and wear, and impact on inter-stage insulation in existing grounding devices. Therefore, it avoids situations such as excessively long waiting time for test personnel, high risk of electric shock, and high equipment failure rate, significantly improving the efficiency, safety, and intelligence level of high voltage testing, and ensuring the long-term stable operation of test personnel and equipment. Attached Figure Description

[0036] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0037] Figure 1 This application provides a schematic diagram of the grounding device of an impulse voltage generator in a split-grounding state, as shown in the embodiments of this application.

[0038] Figure 2 A schematic diagram of the grounding device of an impulse voltage generator in the closed grounding state, provided in an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the structure of a conductive rod provided in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the connection between a conductive rod and a main capacitor, provided in an embodiment of this application.

[0041] Figure 5 A schematic diagram of a transmission device in a second working state provided in an embodiment of this application;

[0042] Figure 6 A schematic diagram of a manual crank provided for an embodiment of this application;

[0043] Figure 7 A detailed diagram illustrating the positional relationship between a limit switch, a limit pointer, and a grounding rod, provided in an embodiment of this application;

[0044] Figure 8 A logic gate circuit diagram of an automatic grounding module for an intelligent control system provided in this application embodiment;

[0045] Figure 9 A basic flowchart of an automatic grounding logic processing module provided in this application embodiment;

[0046] Figure 10 This is a basic flowchart of an automatic change of the operating stage of an impulse voltage generator provided in an embodiment of this application. Detailed Implementation

[0047] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is only for explaining specific embodiments and is not intended to limit the application. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0048] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] It should be noted that the directional terms appearing in this application are based on the relative positional relationships shown in the attached drawings and should not be taken as absolute limitations on this application.

[0050] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0051] refer to Figure 1 , Figure 1 This is a schematic diagram of the grounding device of an impulse voltage generator in a split-grounding state, provided in an embodiment of this application. (Refer to...) Figure 2 , Figure 2 This is a schematic diagram of the grounding device of an impulse voltage generator in the closed grounding state, provided in an embodiment of this application. (Refer to...) Figure 3 , Figure 3 This is a schematic diagram of a conductive rod provided in an embodiment of this application, with reference to... Figure 4 , Figure 4This is a schematic diagram of the connection between a conductive rod and a main capacitor, provided in an embodiment of this application. The impulse voltage generator provided in this embodiment includes an impulse voltage generator base 15 and an N-stage main capacitor 1, where N ≥ 2 and N is a positive integer.

[0052] The grounding device for the impulse voltage generator provided in this application includes a power component, a transmission component, and a multi-segment grounding component.

[0053] The power components include a main motor 6 and an auxiliary motor 17 mounted on the base 15 of the impulse voltage generator.

[0054] The transmission assembly includes a cross-shaped transmission rod 7, an insulated chain 9, a driving gear 16, and a driven gear 10.

[0055] The cross-shaped transmission rod 7 is linked with the main motor 6, which drives the cross-shaped transmission rod 7 to rotate.

[0056] The insulating chain 9 is installed on both sides of the main capacitor 1 and is linked with the auxiliary motor 17. The auxiliary motor 17 is used to drive the insulating chain 9 to move horizontally in order to control the working state of the transmission components.

[0057] The driving gear 16 is installed at both ends of the cross-shaped transmission rod 7, and the driven gear 10 is installed on each stage of the main capacitor 1. The driving gear 16 and the driven gear 10 installed on each stage of the main capacitor 1 are in the same vertical plane and are connected to each other by the insulating chain 9.

[0058] The transmission assembly 4 has a first working state. In the first working state, the main motor 6 controls the cross-shaped transmission rod 7 to drive the drive gear 16 to rotate, which in turn drives the insulating chain 9 to rotate, thereby driving the driven gear 10 to drive the conductive rods 2 at each stage to rotate synchronously, and to switch between grounding and disconnection.

[0059] The multi-segment grounding assembly includes: M conductive rods 2 and grounding rods 3; where M=2N.

[0060] M conductive rods 2 are electrically connected to both sides of the N-stage main capacitor 1, and both conductive rods 2 and grounding rods 3 are linked to the driven gear 10.

[0061] Based on the grounding command, the M conductive rods 2 and the grounding rod 3 are synchronously rotated clockwise around the center to the vertical position under the drive of the driven gear 10, so that the conductive rods 2 connected to each level of main capacitor 1 are in contact with the conductive rods 2 connected to the adjacent level of main capacitor 1, and the conductive rods 2 of the lowest level of main capacitor 1 are in contact with the grounding rod 3.

[0062] Based on the grounding command, the M conductive rods 2 and the grounding rods 3 are synchronously rotated counterclockwise around the center to a horizontal position under the drive of the driven gear 10, so that the M conductive rods 2 and the grounding rods 3 are in a non-contact state, and the main capacitors 1 at each level are in an insulated state.

[0063] Specifically, in this embodiment, the impulse voltage generator base 15 can be a base for supporting the entire impulse voltage generator structure. Its material can be set according to actual conditions, for example, it can be high-strength steel or aluminum alloy. This embodiment does not impose any special limitations on this. Figure 1 and Figure 2 As shown, the impulse voltage generator base 15 serves as the mounting foundation for the entire device, upon which the impulse voltage generator support column 11 is installed. The N-stage main capacitor 1 is fixed to the impulse voltage generator support column 11 and arranged vertically. The main capacitor 1 refers to the energy storage unit that enables the charging and discharging of the impulse voltage generator; its quantity N is a positive integer greater than or equal to 2, and the specific value can be set according to the test voltage level requirements. The main capacitor 1, together with the impulse voltage generator base 15 and the impulse voltage generator support column 11, constitute the target and environmental foundation of the grounding device.

[0064] The power assembly can refer to a collection of components that provide mechanical driving force for the grounding device, and it may include a main motor 6 and an auxiliary motor 17. The main motor 6 is mounted on the impulse voltage generator base 15, and its main function is to provide a rotational power source for the operation of the multi-segment grounding device. The auxiliary motor 17 is also mounted on the impulse voltage generator base 15, and its function is to drive the insulating chain 9 to move horizontally, thereby switching the working state of the transmission assembly. The types of the main motor 6 and the auxiliary motor 17 can be selected according to actual power requirements and control precision; for example, they can be servo motors, stepper motors, or ordinary AC motors. This embodiment does not impose any special limitations on this. The main motor 6 is linked with the cross-shaped transmission rod 7, driving the subsequent transmission chain through output torque; the auxiliary motor 17 is linked with the insulating chain 9, controlling the transmission path by changing the chain position.

[0065] The transmission assembly refers to a mechanical structure that transmits the power generated by the power assembly to the multi-segment grounding assembly. It may include a cross-shaped transmission rod 7, an insulating chain 9, a driving gear 16, and a driven gear 10. The cross-shaped transmission rod 7 can be a transmission rod with a cross-shaped cross section or capable of transmitting bidirectional torque, and it is linked to the output shaft of the main motor 6. The length of the cross-shaped transmission rod 7 is typically greater than the length of the main capacitor 1 to cover all stages of the main capacitor. The function of the cross-shaped transmission rod 7 in the transmission assembly is to convert the rotational motion of the main motor 6 into a synchronous rotational torque distributed in the vertical direction. The cross-shaped transmission rod 7 can be fixed to the impulse voltage generator base 15 by a fixing structure 8 to ensure rotational stability. The two ends of the cross-shaped transmission rod 7 are threaded; the driving gear 16 is fixed to both ends of the cross-shaped transmission rod 7 by nuts. These threads cooperate with the fixing structure 8 mounted on the impulse voltage generator base 15 to constrain the spatial position of the cross-shaped transmission rod 7, ensuring that it maintains a stable axial trajectory during rotation.

[0066] The insulating chain 9 can refer to a transmission medium that combines flexibility and insulation properties, and it is installed on both sides of the main capacitor 1. For example... Figure 1 and Figure 2 As shown, the insulating chain 9 vertically penetrates the impulse voltage generator, with its two ends meshing or connected to the driving gear 16 and the driven gear 10, respectively. The insulating chain 9 is linked to the auxiliary motor 17, which can drive the insulating chain 9 to move horizontally as a whole. This horizontal movement capability allows the insulating chain 9 to switch between a linked state and a non-linked state, thereby controlling whether the transmission component is in the first working state.

[0067] The driving gear 16 is mounted at both ends of the cross-shaped transmission rod 7, and the driven gear 10 is mounted on each stage of the main capacitor 1. The driving gear 16 and the driven gear 10 are in the same vertical plane and are interconnected by the insulating chain 9. The function of the driving gear 16 is to receive the rotational power from the cross-shaped transmission rod 7 and transmit it to the insulating chain 9; the function of the driven gear 10 is to receive the power from the insulating chain 9 and drive the conductive rod 2 linked to it to rotate.

[0068] The transmission assembly operates in two states, including a first state. In this state, the insulating chain 9 is in the linked position, meshing with both the driving gear 16 and the driven gear 10. At this time, the main motor 6 starts, controlling the cross-shaped transmission rod 7 to rotate. The cross-shaped transmission rod 7 drives the driving gear 16 to rotate, which in turn drives the insulating chain 9 to move. The insulating chain 9 then drives all the driven gears 10 at each level to rotate synchronously. This linkage process achieves the synchronous transmission of power from the bottom main motor 6 to the conductive rods 2 at each level of the main capacitor 1, ensuring the consistency of the grounding and disconnection actions.

[0069] A multi-stage grounding assembly can refer to a collection of components that directly perform electrical connection and disconnection operations. It may include M conductive rods 2 and grounding rods 3, where M = 2N. Conductive rods 2 can be metal rods used to conduct current, with their number twice the number of main capacitors 1, electrically connected to both sides of the N-stage main capacitors 1 (i.e., one conductive rod 2 connected to the head and tail of each main capacitor 1). Grounding rods 3 can be conductors used to connect the lowest-level main capacitor 1 to the ground. Both conductive rods 2 and grounding rods 3 are linked to driven gears 10, meaning that the rotation of driven gears 10 directly drives the conductive rods 2 and grounding rods 3 to rotate around their axes.

[0070] The specific structure of the conductive rod 2 can vary, such as Figure 1 and Figure 3 As shown, the conductive rod 2 may include an upper conductive rod 21, a hollow structure 25, and a lower conductive rod 22. The upper conductive rod 21 and the lower conductive rod 22 can be mounted on both sides of the hollow structure 25 based on the fastening screw holes 26, respectively. This segmented design allows for adjustment of the total length of the conductive rod 2 to accommodate main capacitors 1 with different spacing. In addition, the upper conductive rod 21 and the lower conductive rod 22 may also be provided with an elastic structure 27 and a concave-convex contact surface 28; the elastic structure 27 can provide contact pressure to compensate for processing errors and thermal expansion and contraction; the concave-convex contact surface 28 can increase the contact area and break the oxide layer to ensure good electrical contact. The connection between the conductive rod 2 and the main capacitor 1 can be achieved through a bearing 13 and a connecting pin 14. The outer shaft of the bearing 13 is electrically connected to the main capacitor 1, and the inner shaft is connected to the connecting pin 14, thereby achieving a rotatable connection of the conductive rod 2 relative to the main capacitor 1 while maintaining electrical conductivity.

[0071] The conductive rod 2 can refer to a component used to connect the electrical connections between the main capacitors 1 at each stage under a grounding command, or to disconnect the connections under a grounding command to achieve insulation. In the technical solution of this application, the conductive rod 2 is designed as a modular structure with adjustable length. Its core is to adapt to the stacking height of the main capacitors of the impulse voltage generator with different stages or different spacings by changing its total length.

[0072] The upper conductive rod 21 can refer to a conductive component located at the upper end of the conductive rod 2. It can be a solid metal rod or a conductor with a specific cross-sectional shape. One end of the upper conductive rod 21 is used to contact the conductive component on the adjacent upper-level main capacitor 1 side, and the other end is inserted into the hollow structure 25. The upper conductive rod 21 and the hollow structure 25 cooperate to form the upper half of the current transmission path.

[0073] The lower conductive rod 22 can refer to the conductive component located at the lower end of the conductive rod 2. Its structure can be the same as the upper conductive rod 21, or it can differ depending on the object it contacts. One end of the lower conductive rod 22 is used to contact the conductive component or grounding rod 3 on the adjacent lower-level main capacitor 1 side, and the other end is inserted into the hollow structure 25. The lower conductive rod 22 and the hollow structure 25 cooperate to form the lower half of the current transmission path.

[0074] The hollow structure 25 can refer to the intermediate support frame located between the upper conductive rod 21 and the lower conductive rod 22, with a hollow interior to accommodate the insertion ends of the upper conductive rod 21 and the lower conductive rod 22. The hollow structure 25 can be made of a high-strength insulating material encasing the conductive core, or it can be an all-metal tubular structure; this application embodiment does not impose any special limitations on this. The hollow structure 25 acts as a connecting bridge in the overall technical solution, and the fastening screw holes 26 opened on it are not only used to fix the inserted upper and lower conductive rods, but also serve as a locking mechanism for length adjustment.

[0075] The fastening screw hole 26 can refer to a threaded through hole that penetrates the wall of the hollow structure 25 and extends into its inner cavity. The number of fastening screw holes 26 can be set according to the actual situation; for example, it can be one or multiple distributed along the axial direction. The function of the fastening screw hole 26 is to provide radial locking force. After the upper conductive rod 21 or the lower conductive rod 22 is adjusted to the target depth, the screw is screwed in to tighten the surface of the conductive rod 2, preventing axial displacement during rotation or vibration, thereby ensuring the stability of the overall length of the conductive rod 2.

[0076] In its implementation, the upper conductive rod 21 and the lower conductive rod 22 are respectively installed on both sides of the hollow structure 25 based on the fastening screw holes 26. This means that the upper conductive rod 21 is inserted from one end of the hollow structure 25, and the lower conductive rod 22 is inserted from the other end. By loosening the screw installed in the fastening screw hole 26, the extension length of the upper conductive rod 21 or the lower conductive rod 22 can be changed by pushing or pulling, and then tightening the screw again, the length of the conductive rod 2 can be adjusted steplessly or in steps. This linkage mechanism allows the same grounding device to adapt to impulse voltage generators of different height specifications, solving the problem of cumbersome on-site debugging.

[0077] Specifically, during the installation or commissioning phase, the operator, based on the actual stacking height of the main capacitor 1 of the impulse voltage generator, loosens the fastening screw holes 26 on both sides of the hollow structure 25, and pulls out or pushes in the upper conductive rod 21 and lower conductive rod 22 respectively until the total length of the conductive rod 2 meets the requirement that both ends can reliably contact the adjacent capacitor plates when grounding. After confirming the accurate position, the operator tightens the fastening screw holes 26 to lock the upper and lower conductive rods. During subsequent operation, when a grounding command is received, the driven gear 10 drives the locked-length conductive rod 2 to rotate, and the upper conductive rod 21 and lower conductive rod 22 rotate synchronously with the hollow structure 25 to the vertical conducting position; when a grounding command is received, the conductive rod 2 rotates in the opposite direction to the horizontal insulating position. Throughout the entire process, the hollow structure 25 maintains a rigid connection with the upper and lower conductive rods, ensuring the effective transmission of torque.

[0078] Furthermore, the elastic structure 27 can refer to a component with elastic deformation capability disposed at the end of the upper conductive rod 21 and / or the lower conductive rod 22. It can be a spring sheet, bellows, pre-compressed helical spring, or rubber elastomer, etc., and this application embodiment does not make any special limitation in this regard. When the grounding command drives the conductive rod 2 to rotate to the contact position, the elastic structure 27 can undergo elastic deformation to provide a constant contact positive pressure. The elastic structure 27 cooperates with the upper conductive rod 21 and the lower conductive rod 22 to compensate for gaps caused by manufacturing tolerances, installation errors, or thermal expansion and contraction during long-term operation of the equipment. This ensures that during the high-current transient process of the multi-stage main capacitor 1 series discharge, adjacent conductive rods 2 always maintain a tight fit, avoiding excessive contact resistance or arcing caused by insufficient contact pressure.

[0079] The concave-convex contact surface 28 can refer to a surface structure with a specific microscopic or macroscopic geometric morphology disposed on the contact end face of the upper conductive rod 21 and / or the lower conductive rod 22 with the adjacent conductive rod. This concave-convex contact surface 28 can be a sawtooth structure, a spherical surface with pit mating structure, a pyramidal array structure, or a cross-shaped rib structure, etc., and can be set according to actual conditions. When the upper conductive rod 21 and the adjacent lower conductive rod 22 rotate into contact under the drive of the driven gear 10, the mutual meshing or compression between the concave-convex contact surfaces 28 can pierce the oxide film on the metal surface, increasing the effective conductive contact area and forming multi-point conductive channels. The concave-convex contact surface 28 works synergistically with the elastic structure 27. The positive pressure provided by the elastic structure 27 causes the concave-convex structure to penetrate deeper into the other surface, further reducing the interface contact resistance. Simultaneously, a self-cleaning effect is generated during relative sliding, removing dust or oxides from the contact surface and extending the contact service life.

[0080] Specifically, when the intelligent control system issues a grounding command, the main motor 6 drives the transmission components to rotate synchronously on each stage of the conductive rods 2. During this process, the lower conductive rod 22 connected to the upper main capacitor 1 and the upper conductive rod 21 connected to the lower main capacitor 1 gradually approach and contact each other. First, the concave-convex contact surfaces 28 at their ends make initial contact. As the rotation angle continues to increase, the elastic structure 27 begins to deform under pressure, generating a reverse elastic force that tightly presses the contact surfaces together. At this time, the protruding parts of the concave-convex structure embed into the concave parts of the other or scratch the surface oxide layer, establishing a low-resistance electrical connection path. Due to the presence of the elastic structure 27, even if external vibration or temperature changes cause slight displacement, the contact pressure can remain dynamically constant, preventing momentary circuit breaks or poor contact.

[0081] Based on the grounding command, the M conductive rods 2 and the grounding rod 3 rotate synchronously clockwise around the center under the drive of the driven gear 10. For example... Figure 2 As shown, in the grounded state, the rotation causes the conductive rod 2 (e.g., lower conductive rod 22) connected to each stage of the main capacitor 1 to contact the conductive rod 2 (e.g., upper conductive rod 21) connected to the adjacent stage of the main capacitor 1. Simultaneously, the conductive rod 2 of the lowest stage of the main capacitor 1 contacts the grounding rod 3. At this time, the N-stage main capacitor 1, through the series contact of the conductive rods 2 and the connection of the lowest stage to the grounding rod 3, forms a complete low-impedance discharge loop from the highest potential to the ground, achieving the purpose of rapid charge discharge. For example, the rotation angle can be 90 degrees; the specific angle can be set according to the structural design.

[0082] Based on the split grounding command, the M conductive rods 2 and the grounding rod 3 rotate synchronously counterclockwise around the center under the drive of the driven gear 10. As shown in Figure 1, in the split grounding state, the rotation causes the M conductive rods 2 and the grounding rod 3 to be in a non-contact state. Specifically, the conductive rod 2 rotates to a horizontal position, away from the conductive rod 2 of the adjacent stage, and the grounding rod 3 also rotates to a horizontal position and disengages from the contact point. At this time, the main capacitors 1 of each stage and the main capacitor 1 and the ground are in an insulated state. Since the conductive rod 2 is in a horizontal position during split grounding, it does not occupy the vertical space between the main capacitors 1, thus not shortening the interstage insulation distance and effectively avoiding the risk of accidental interstage discharge. At the same time, the horizontal conductive rod 2 forms a clear physical break, making it easy for testers to visually judge the state of the grounding device.

[0083] As described above, the technical solution of this application designs a rigid-flexible coupling transmission system consisting of a cross-shaped transmission rod 7, an insulating chain 9, and a gear set. A single main motor 6 drives the cross-shaped transmission rod 7, and the insulating chain 9 serves as a synchronous belt, achieving strictly synchronous rotation of the multi-stage conductive rods 2. This design overcomes the shortcomings of traditional methods, such as easy tangling of ropes and easy failure of springs, and ensures the reliability of the operation through the deterministic nature of gear meshing.

[0084] When grounding is required, the intelligent control system issues a grounding command, the main motor 6 starts and drives the cross-shaped transmission rod 7 to rotate. The cross-shaped transmission rod 7 drives the driving gears 16 at both ends to rotate. The driving gears 16 drive all the driven gears 10 at each level to rotate synchronously through the insulating chain 9. The driven gears 10 drive the conductive rods 2 and grounding rods 3 fixed to them to rotate 90 degrees clockwise, so that the conductive rods 2 at each level come into contact with each other and are connected to the grounding rods 3, forming a discharge circuit. When grounding is required, the main motor 6 rotates in the opposite direction, driving each component to rotate 90 degrees counterclockwise to reset. The conductive rods 2 and grounding rods 3 return to a horizontal non-contact state, cutting off the discharge circuit and restoring inter-level insulation. During this process, the auxiliary motor 17 can drive the insulating chain 9 to move horizontally as needed to change the meshing state of the transmission chain, thereby providing a basis for the stage selection operation. Although the details of stage selection are further defined in subsequent embodiments, this demonstrates the control role of the auxiliary motor 17 in the transmission state.

[0085] In summary, the technical solution of this application achieves efficient and reliable grounding of the impulse voltage generator through a collaborative architecture including a power component, a transmission component, and a multi-segment grounding component. Specifically, the main motor 6 drives the cross-shaped transmission rod 7 to rotate, which in turn drives the active gear 16 and transmits power to the driven gears 10 at each stage via an insulated chain 9. This allows the M conductive rods 2 and the grounding rod 3 to rotate synchronously around the center. This rigid-flexible coupling transmission method avoids interference from traditional rope tension or spring potential energy, ensuring the synchronicity and accuracy of the action. Based on the grounding command, the conductive rod 2 rotates clockwise to bring the conductive rods 2 of adjacent main capacitors 1 and the lowest-level conductive rod 2 into contact with the grounding rod 3, quickly forming a complete discharge circuit. Based on the grounding command, the conductive rod 2 rotates counterclockwise to reset to a horizontal non-contact state, not only restoring the insulation distance between the main capacitors 1 at each stage but also creating a clear physical break for visual confirmation. This effectively solves the problems of slow operation, poor contact, easy jamming and wear, and impact on inter-stage insulation in existing grounding devices. Therefore, it avoids situations such as excessively long waiting time for test personnel, high risk of electric shock, and high equipment failure rate, significantly improving the efficiency, safety, and intelligence level of high voltage testing, and ensuring the long-term stable operation of test personnel and equipment.

[0086] In other words, the technical solution of this application adopts a rotary grounding method. Compared with the vertical movement of the prior art, the rotary movement keeps the conductive rod 2 and the grounding rod 3 in a horizontal position when the grounding is disconnected, which does not affect the interstage insulation between the main capacitors 1 of each stage, and effectively improves the reliability of the impulse voltage generator. In addition, the grounding device has a clear break when the grounding is disconnected, which makes it convenient for testers to visually judge the disconnection and connection status, and improves the safety of operation.

[0087] It should be noted that the technical solution of this application has low power requirements for the power device and strong compatibility. Therefore, the main motor 6 can be replaced by a pneumatic device, a hydraulic device or an electromagnetic device.

[0088] In an optional embodiment of this application, reference is made to Figure 5 , Figure 5 This is a schematic diagram of a transmission device in a second working state according to an embodiment of this application. The insulated chain 9 includes a chain portion 91, an insulated rope portion 92, a fixed slide rail 93, a support rod 94, and an auxiliary gear 95. The fixed slide rail 93 is installed on both sides of each stage of the main capacitor 1. The support rod 94 is installed on the fixed slide rail 93 for horizontal movement. The auxiliary gear 95, the chain portion 91, and the insulated rope portion 92 are installed inside the support rod 94. The auxiliary gear 95 is located at the upper and lower ends of the support rod 94. The chain portion 91 and the insulated rope portion 92 are connected end to end, and the auxiliary gear 95 fixes the chain portion 91 and the insulated rope portion 92. The auxiliary motor 17 is linked with the lower auxiliary gear 95. Based on control commands, the auxiliary motor 17 and the support rod 94 are controlled to move horizontally, and / or the auxiliary gear 95 is controlled to rotate to switch between the chain portion 91 and the insulated rope portion 92.

[0089] In the first working state, the chain section 91 is connected to the driving gear 16 and the driven gear 10 respectively. The main motor 6 controls the cross-shaped transmission rod 7 to drive the driving gear 16 to rotate, which in turn drives the insulating chain 9 to rotate, so as to drive the driven gear 10 to drive the conductive rods 2 of each stage to rotate synchronously, and to switch between grounding and disconnection.

[0090] The transmission assembly also includes a second working state. In the second working state, the control insulating chain 9 and the auxiliary motor 17 move horizontally together. After the chain part 91 is disconnected from the driving gear 16 and the driven gear 10, the auxiliary motor 17 drives the auxiliary gear 95 to rotate, controlling the chain part 91 and the insulating rope part 92 to switch between each other. After the switch is completed, it switches back to the first working state, thereby realizing the selection control of the conductive rod 2, that is, the selection control of the working level of the impulse voltage generator.

[0091] Specifically, in this embodiment, the insulating chain 9 can refer to a composite transmission medium that achieves the dual functions of power transmission and power isolation through a combination of different material segments. The chain portion 91 can be an insulating transmission structure with high tensile strength and capable of meshing with gears, used to accurately transmit the rotational power of the main motor 6 to each stage of driven gears 10 in the first working state; the insulating rope portion 92 can be a nylon rope, fiber rope, or other flexible non-metallic rope with good insulation properties, used to block power transmission in specific sections, keeping the corresponding driven gears 10 stationary. The fixed slide rail 93 can be a rigid guide rail installed on both sides of the impulse voltage generator support column 11, its length covering the distribution range of all main capacitors 1, used to provide a guide path for the horizontal movement of the support rod 94. The support rod 94 can be a hollow frame structure, with both ends slidingly fitted onto the fixed slide rail 93, and internally accommodating the auxiliary gear 95, the chain portion 91, and the insulating rope portion 92. The auxiliary gear 95 can be two sprockets or gears respectively set at the upper and lower ends of the support rod 94, used to tension and guide the chain part 91 and the insulating rope part 92 to circulate together.

[0092] The linkage between the components of the insulating chain 9 is manifested in the transmission connection between the output shaft of the auxiliary motor 17 and the lower auxiliary gear 95. When the auxiliary motor 17 rotates, it drives the auxiliary gear 95 to rotate, thereby causing the chain section 91 and the insulating rope section 92 to circulate within the support rod 94, realizing the interchange of the two functional sections in the vertical direction. At the same time, the auxiliary motor 17 or its associated gimbal mechanism can drive the entire support rod 94 to move horizontally along the fixed slide rail 93, thereby changing the lateral position of the insulating chain relative to the driving gear 16 and the driven gear 10. This coordination of horizontal movement and internal circulation rotation allows the device to flexibly switch between two modes: full chain engagement and partial insulating rope isolation.

[0093] Specifically, when a grounding connection or disconnection operation is required, the device is in its first operating state. At this time, the support rod 94 moves to a specific position, so that the chain section 91 is directly facing the driving gear 16 and the driven gear 10, and the chain section 91 is tightly meshed with the gears. The main motor 6 starts, driving the cross-shaped transmission rod 7 and the driving gear 16 to rotate. The power is synchronously transmitted to the meshed driven gear 10 via the chain section 91, driving all conductive rods 2 to rotate synchronously by 90 degrees, completing the grounding connection or disconnection operation.

[0094] When it is necessary to change the operating level of the impulse voltage generator, the device switches to the second operating state (it should be noted that switching to the second operating state requires the grounding device to be in the closed grounding state). First, the auxiliary motor 17 drives the support rod 94 to move horizontally along the fixed slide rail 93, causing the entire insulating chain to deviate from the meshing area of ​​the driving gear 16 and the driven gear 10, thus disengaging the mechanical link. Subsequently, the auxiliary motor 17 drives the auxiliary gear 95 to rotate, adjusting the relative length distribution of the chain section 91 and the insulating rope section 92, so that the section corresponding to the main capacitor 1 level that needs to be short-circuited becomes the insulating rope section 92, while the section corresponding to the level that needs to remain operational remains the chain section 91. After the adjustment is completed, the support rod 94 returns to the position of the first operating state. If the grounding command is executed at this time, only the lower K-stage driven gear 10 that meshes with the chain section 91 will rotate to disconnect the conductive rod 2, while the upper NK-stage driven gear 10 that contacts the insulating rope section 92 will remain stationary because it cannot obtain power, and the conductive rod 2 connected to it will remain in a short-circuited state, thereby realizing the automatic replacement of the working stage of the impulse voltage generator.

[0095] It should be noted that, without considering the selection function of the impulse voltage generator, the insulating chain 9 can be replaced by a rigid structure that can match the movement of the gears.

[0096] In an optional embodiment of this application, such as Figure 4 As shown, the multi-segment grounding assembly also includes: bearing 13 and connecting pin 14.

[0097] M conductive rods 2 are electrically connected to both sides of the main capacitors 1 at each stage via connecting pins 14 and bearings 13.

[0098] Among them, the outer shaft of bearing 13 is electrically connected to main capacitor 1, and the inner shaft of bearing 13 is electrically connected to the circular plug 143 of connecting pin 14; one side of conductive rod 2 is connected to connecting pin 14, and the other side of conductive rod 2 is connected to convex fixing surface 101 of driven gear 10; the cross-shaped plug 141 of connecting pin 14 passes through the cross-shaped through hole 23 of conductive rod 2 and the cross-shaped through hole 102 of driven gear 10 in sequence, and is fixed by target nut 12 that matches the thread 142 designed on the cross-shaped plug 141 of connecting pin 14.

[0099] Specifically, in this embodiment, bearing 13 refers to a mechanical component used to support the rotating body and reduce the coefficient of friction. In this technical solution, it primarily serves the dual functions of electrical conduction and mechanical decoupling. The outer shaft of bearing 13 can be electrically connected to the main capacitor 1, serving as a resting potential reference point; the inner shaft of bearing 13 can be electrically connected to the circular plug 143 of the connecting pin 14, rotating synchronously with the conductive rod 2. Through this separation design of the inner and outer shafts, bearing 13 ensures a continuous, low-impedance electrical path between the main capacitor 1 and the conductive rod 2, while eliminating direct mechanical friction between the conductive rod 2 and the housing of the main capacitor 1 during rotation, thus avoiding electrical sparks or localized overheating caused by rotation.

[0100] The connecting pin 14 can refer to a connector used to axially fix multiple components and transmit torque. In this technical solution, the circular insert 143 of the connecting pin 14 is embedded in the inner shaft of the bearing 13 to achieve the positioning of the rotation center and the introduction of electricity; its cross-shaped insert 141 extends outward, passing through the cross-shaped through hole 23 on the conductive rod 2 and the cross-shaped through hole 102 on the driven gear 10 in sequence. This cross-shaped mating structure constitutes an anti-rotation mating relationship, ensuring that the rotational torque received by the driven gear 10 can be transmitted to the connecting pin 14 without loss and with zero clearance, thereby driving the conductive rod 2 to perform a precise 90-degree rotation, eliminating the slippage or angle deviation problems that may occur in traditional keyway or pin connections.

[0101] The conductive rod fixing surface 24 can be a flat interface at both ends of the conductive rod 2 for mechanical connection and electrical contact with other components. One side of the conductive rod fixing surface 24 is connected to the connecting pin 14, and the other side of the conductive rod fixing surface 24 abuts against the convex fixing surface 101 of the driven gear 10. This double-sided fixing method ensures that the conductive rod 2 is firmly clamped between the connecting pin 14 and the driven gear 10, forming a rigid transmission chain of main capacitor 1, bearing 13, connecting pin 14, conductive rod 2, and driven gear 10. When the driven gear 10 rotates, this connection structure drives the conductive rod 2 to rotate synchronously around the central axis, realizing the switching between grounding and open grounding states. The shape, area, and surface treatment process of the conductive rod fixing surface 24 can be set according to actual conditions. For example, it can be a planar contact or a curved contact with anti-slip texture. This embodiment does not impose any special limitations on this.

[0102] The target nut 12 can refer to a fastener that matches the thread 142 at the end of the connecting pin 14. Tightening the target nut 12 onto the cross-shaped insert 141 of the connecting pin 14 applies axial clamping force to the conductive rod 2 and the driven gear 10, ensuring a tight fit between the components and preventing loosening under prolonged vibration or frequent operation. The presence of the target nut 12 not only provides reliable mechanical locking but also ensures stable pressure on the electrical contact surfaces, thereby maintaining low contact resistance.

[0103] Specifically, when a grounding connection or disconnection command is required, the main motor 6 drives the cross-shaped transmission rod 7 to rotate the drive gear 16, which in turn drives the driven gears 10 at each stage to rotate via the insulated chain 9. The rotational torque of the driven gear 10 is transmitted to the conductive rod 2 through its convex fixed surface 101. Simultaneously, since the cross-shaped plug 141 of the connecting pin 14 passes through the cross-shaped through holes of both the driven gear 10 and the conductive rod 2, the three form a synchronously rotating whole. During this process, the outer shaft of the bearing 13 remains stationary and is connected to the main capacitor 1, while the inner shaft rotates with the connecting pin 14 and the conductive rod 2, achieving a smooth transition and reliable connection between the rotating components and the stationary high-voltage components. Finally, the conductive rod 2, supported by the bearing 13, rotates precisely to the specified angle, completing the inter-stage short circuit or contacting the grounding rod 3.

[0104] In an optional embodiment of this application, the length of the cross-shaped insert 141 connecting the pin 14 is greater than the total thickness of the conductive rod 2, the driven gear 10, and the target nut 12.

[0105] Specifically, in this embodiment, the length of the cross-shaped insert 141 connecting the pin 14 is greater than the total thickness of the conductive rod 2, the driven gear 10, and the target nut 12. This can refer to the axial extension of the cross-shaped insert 141 exceeding the cumulative thickness of the fixing surface of the conductive rod 2, the mounting portion of the driven gear 10, and the target nut 12 used for locking. This redundant length design ensures that, under normal operating conditions where the target nut 12 tightly presses and fixes the conductive rod 2 and the driven gear 10, the end of the cross-shaped insert 141 can still extend a certain distance beyond the target nut 12.

[0106] refer to Figure 6 , Figure 6 This is a schematic diagram of a manual crank provided in an embodiment of this application. The extended portion serves as an emergency manual operation interface in the technical solution of this application. When the main motor 6 fails or the intelligent control system malfunctions, preventing automatic drive, an external manual tool (such as...) can be used. Figure 6 The manual crank (AA) shown can be directly sleeved onto or abutted against the extended section, and the cross-shaped insert 141 is directly driven to rotate by applying rotational torque. Since the cross-shaped insert 141 is connected to the conductive rod 2 and the driven gear 10 through a cross-shaped through hole, the rotation of the insert will directly drive the driven gear 10 and the conductive rod 2 to rotate synchronously, thereby realizing the mechanical action of grounding or grounding disconnection. The length of the extended section can be set according to the actual situation. For example, it can be slightly larger than the length required for the insertion depth of the manual crank, or it can be a size with sufficient lever arm length. This application embodiment does not make special limitations on this, as long as it can be used as the force-bearing end for manual operation.

[0107] Specifically, in normal electric mode, the main motor 6 drives the transmission assembly to rotate the driven gear 10. At this time, the connecting pin 14 rotates accordingly to complete the grounding operation, and the target nut 12 provides axial locking force to prevent loosening. In emergency manual mode, utilizing the extended end formed by the cross-shaped plug 141 being longer than the total thickness of the assembly, the operator applies a manual tool to this extended end, bypassing the power assembly to directly apply driving force to the mechanical transmission chain. Because the cross-shaped plug 141 passes through the cross-shaped through-hole of the conductive rod 2 and the driven gear 10, its rotational freedom is not restricted. Therefore, manually input rotational motion can be transmitted to the conductive rod 2 without loss, allowing it to overcome frictional resistance and complete a 90-degree rotation, achieving the same grounding or disconnection state as in electric mode. This limitation in length dimension does not change the original connection structure; rather, through the optimization of dimensional parameters, a dual operation path of automatic priority and manual backup is constructed in physical space.

[0108] In an optional embodiment of this application, reference is made to Figure 7 , Figure 7 A detailed diagram illustrating the positional relationship between a limit switch, a limit pointer, and a grounding rod, provided in an embodiment of this application, is shown below. Figure 8 , Figure 8 This application provides a logic gate diagram of an automatic grounding module for an intelligent control system. The intelligent control system is used to realize automatic grounding and automatic change of the working level of the impulse voltage generator. It includes a limit pointer 4, a limit switch 5, a logic processing module, a PLC controller, a grounding resistance measuring device, a manual control switch, and an alarm device. The manual control switch includes an emergency stop switch, a normally open closed switch, and a normally open open switch.

[0109] The automatic grounding control logic is as follows:

[0110] like Figure 7 As shown in the figure, the key hardware relationships for the effective implementation of the intelligent control system are illustrated. Limit pointer 4 is equipped with a grounding-off limit pointer 41 and a grounding-on limit pointer 42. The grounding-off limit pointer 41 is arranged parallel to the grounding rod 3 and rotates synchronously under the drive of the cross-shaped transmission rod 7. Limit switches 5 include a grounding-off limit switch 51 and a grounding-on limit switch 52, respectively located on both sides of the limit pointer 4, ensuring effective contact between them.

[0111] like Figure 8As shown, the PLC controller receives the closing and opening signals output by the logic processing module and drives the main motor 6 to perform corresponding actions. When the closing signal C outputs a high level, the PLC controller controls the main motor 6 to rotate to the closing ground position. At this time, the closing ground pointer 42 triggers the closing ground limit switch 52 to act, the closing ground signal B outputs a high level, and the main motor 6 is controlled to stop moving. When the opening signal O outputs a high level, the PLC controller controls the main motor 6 to rotate in the opposite direction to the opening ground position. At this time, the opening ground limit pointer 41 triggers the opening ground limit switch 51 to act, the opening ground signal A outputs a high level, and the main motor 6 is controlled to stop moving.

[0112] The logic gate circuit of the automatic grounding module of the intelligent control system is as follows: Figure 8 As shown, the automatic grounding logic processing module has 7 input units and 3 output units, and supports the expansion of input / output units and functions. The physical states corresponding to the different digital signals of each input / output unit are shown in the table below:

[0113]

[0114] For ease of understanding, please refer to Figure 9 , Figure 9 A basic flowchart of an automatic grounding logic processing module provided in this application embodiment is as follows: Figure 9 As shown, it will not be elaborated further here.

[0115] As described above, the intelligent control system's automatic grounding control enables automatic control of the grounding device, avoiding safety hazards caused by negligence on the part of the test personnel who forget to switch the grounding on or off. When the automatic control function fails or manual intervention is required in specific situations, the emergency stop switch on the manual control switch can be turned off. In this case, automatic control will fail, and automatic control will be restored upon switching back on.

[0116] The input signal gate interlock (D), grounding resistance signal (R), and output signal alarm (S) of the automatic grounding logic processing module can all be directly connected to the laboratory control system. Furthermore, the laboratory can expand this logic processing module according to its actual needs, introducing or outputting other signals to achieve the required functions, thus realizing high adaptability of the intelligent control system from a software perspective.

[0117] The automatic adjustment of the impulse voltage generator's operating stage control is shown below:

[0118] The function of automatically changing the working level of the impulse voltage generator is implemented on the basis of the above-mentioned automatic grounding function. Specifically, it is implemented on the basis of the effective operation of the grounding command. That is, the operation of changing the working level is prohibited when the impulse voltage generator is charging, and the automatic grounding function is not affected after the operation of changing the level is completed.

[0119] For ease of understanding, please refer to Figure 10 , Figure 10 A basic flowchart of an automatic impulse voltage generator operating stage provided in this application embodiment is as follows: Figure 10 As shown, it will not be elaborated further here.

[0120] In the closed grounding state, after inputting the working level K, the PLC controller controls the pan-tilt unit to enter working state 2 (i.e., the second working state), then controls the auxiliary motor 17 to operate and reset the previous level selection operation. After resetting, the auxiliary motor 17 is controlled to operate again, with an operation length of (NK) × L, where L is the distance between the two main capacitors 1. After the operation is completed, it switches back to working state 1 (i.e., the first working state), completing the level selection operation. At this time, the driven gear 10 connected to the NK-level main capacitor 1 of the impulse voltage generator is in contact with the insulating rope part 92, and the driven gear 10 connected to the lower K-level main capacitor 1 is connected to the chain part 91. On this basis, if a separate grounding operation is performed, the driven gear 10 connected to the upper NK-level main capacitor 1 will not operate. Therefore, after the separate grounding is completed, the upper NK-level main capacitor 1 is still short-circuited, and the lower K-level main capacitors 1 are mutually insulated, thus realizing the function of selecting the working level K of the impulse voltage generator.

[0121] It should be noted that the multi-stage grounding device and intelligent control system provided in this application can be applied to other multi-stage equipment, such as chopping devices, Max generators and fast linear transformers in the field of pulse power technology.

[0122] The grounding device for an impulse voltage generator provided in this application has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0123] It should be noted that each embodiment in this specification focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0124] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that elements inherent to a process, method, article, or apparatus that comprises a list of elements, or elements inherent to such processes, methods, articles, or apparatus, are also included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0125] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grounding device for an impulse voltage generator, characterized in that, The impulse voltage generator includes an impulse voltage generator base and an N-stage main capacitor, where N ≥ 2 and N is a positive integer; The grounding device of the impulse voltage generator includes a power component, a transmission component, and a multi-segment grounding component; The power assembly includes a main motor and an auxiliary motor mounted on the base of the impulse voltage generator; The transmission assembly includes a cross-shaped transmission rod, an insulated chain, a driving gear, and a driven gear; The cross-shaped transmission rod is linked to the main motor, and the main motor is used to drive the cross-shaped transmission rod to rotate. The insulating chain is installed on both sides of the main capacitor and is linked with the auxiliary motor. The auxiliary motor is used to drive the insulating chain to move horizontally in order to control the working state of the transmission assembly. The driving gear is mounted at both ends of the cross-shaped transmission rod, and the driven gear is mounted on each stage of the main capacitor. The driving gear and the driven gear mounted on each stage of the main capacitor are in the same vertical plane and are connected to each other by the insulating chain. The transmission assembly has a first working state. In the first working state, the main motor controls the cross-shaped transmission rod to drive the drive gear to rotate, which in turn drives the insulating chain to rotate, thereby driving the driven gear to drive the conductive rods at each stage to rotate synchronously, and to switch between grounding and disconnection. The multi-segment grounding assembly includes: M conductive rods and grounding rods; wherein, M=2N; M conductive rods are electrically connected to both sides of the N-stage main capacitor, and both the conductive rods and the grounding rod are linked to the driven gear. Based on the grounding command, the M conductive rods and the grounding rod are synchronously rotated clockwise around the center to a vertical position under the drive of the driven gear, so that the conductive rods connected to the main capacitors at each level contact the conductive rods connected to the adjacent main capacitors, and the conductive rod of the lowest level main capacitor contacts the grounding rod. Based on the grounding command, the M conductive rods and the grounding rod are synchronously rotated counterclockwise around the center to a horizontal position under the drive of the driven gear, so that the M conductive rods and the grounding rod are in a non-contact state and the main capacitors at each level are in an insulated state.

2. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The insulating chain includes a chain section, an insulating rope section, a fixed slide rail, a support rod, and an auxiliary gear. The fixed slide rail is installed on both sides of each stage of the main capacitor. The support rod is installed on the fixed slide rail for horizontal movement. The auxiliary gear, the chain section, and the insulating rope section are installed inside the support rod. The auxiliary gear is located at the upper and lower ends of the support rod. The chain section and the insulating rope section are connected end-to-end, and the auxiliary gear fixes the chain section and the insulating rope section. The auxiliary motor is linked with the lower auxiliary gear. Based on control commands, the auxiliary motor and the support rod are controlled to move horizontally, and / or the auxiliary gear is controlled to rotate to switch between the chain section and the insulating rope section. In the first working state, the chain section is connected to the driving gear and the driven gear respectively. The main motor controls the cross-shaped transmission rod to drive the driving gear to rotate, which in turn drives the insulating chain to rotate, so as to drive the driven gear to drive the conductive rods of each stage to rotate synchronously, and to switch between grounding and disconnection. The transmission assembly also includes a second working state. In the second working state, the insulating chain and the auxiliary motor are controlled to move horizontally together. After the chain part is disconnected from the driving gear and the driven gear, the auxiliary motor drives the auxiliary gear to rotate, controlling the chain part and the insulating rope part to switch between each other. After the switch is completed, the system switches back to the first working state, thereby realizing the selection control of the working level of the impulse voltage generator.

3. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The multi-segment grounding assembly also includes: bearings and connecting pins; The M conductive rods are electrically connected to both sides of each stage of the main capacitor via the connecting pins and the bearings; The outer shaft of the bearing is electrically connected to the main capacitor, and the inner shaft of the bearing is electrically connected to the circular insert of the connecting pin. One side of the conductive rod is connected to the connecting pin, and the other side is connected to the convex fixing surface of the driven gear. The cross-shaped insert of the connecting pin passes through the cross-shaped through hole of the conductive rod and the cross-shaped through hole of the driven gear in sequence, and is fixed by a target nut that matches the thread designed on the cross-shaped insert of the connecting pin.

4. The grounding device for the impulse voltage generator according to claim 3, characterized in that, The length of the cross-shaped insert of the connecting pin is greater than the total thickness of the conductive rod, the driven gear, and the target nut.

5. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The conductive rod includes an upper conductive rod, a hollow structure, and a lower conductive rod; The upper conductive rod and the lower conductive rod are respectively installed on both sides of the hollow structure based on the fastening screw holes.

6. The grounding device for the impulse voltage generator according to claim 5, characterized in that, The upper conductive rod is provided with an elastic structure and a concave-convex contact surface, and the lower conductive rod is provided with the elastic structure and the concave-convex contact surface.

7. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The impulse voltage generator further includes: an impulse voltage generator support; The impulse voltage generator support is mounted on the impulse voltage generator base, and the N-stage main capacitor is fixed on the impulse voltage generator support.

8. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The length of the cross-shaped transmission rod is greater than the length of the main capacitor.

9. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The transmission assembly also includes a fixing structure; The cross-shaped transmission rod is fixed to the base of the impulse voltage generator based on the fixed structure.

10. The grounding device for the impulse voltage generator according to claim 1, characterized in that, The two ends of the cross-shaped transmission rod are threaded; The drive gear is fixed to both ends of the cross-shaped transmission rod by nuts.

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