Protection mechanism and reactive compensation generation device

Abstract

The invention relates to the technical field of power electronics, in particular to a protection mechanism and a reactive compensation generating device, which comprise a socket and a plug plugged with the socket, the shielding piece comprises an upper shielding part, a lower shielding part and a sliding sleeve, the upper shielding part is located at the upper half part of the socket, the lower shielding part is right opposite to the lower part of the upper shielding part, the sliding sleeve can move away from the plug in the first direction, and when the sliding sleeve moves in the first direction, the sliding sleeve can apply force in the second direction to the lower shielding part; and the lower shielding part is pushed to be attached to the upper shielding part. The electromagnetic shielding device has the advantages that the sliding sleeve is driven to slide in the first direction through the plugging action of the plug and the socket, and then the lower shielding part is controlled to be attached to the upper shielding part in the second direction through the synergistic effect of the arc-shaped groove and the sliding block, so that electrical conduction is formed, and electromagnetic shielding is achieved. When the plug is separated, the sliding sleeve is driven by the reset spring to slide reversely, the non-shielding state is automatically recovered, and extra manual operation is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of power electronics, in particular to a protection mechanism and a reactive power compensation generating device. Background Art

[0002] Static VAR generators (SVGs), a new generation of reactive power compensation devices, are widely used in power electronics. Core to a high-power three-phase voltage-source inverter, they connect to the system via a reactor, maintaining the same frequency and phase as the system voltage. SVGs determine the nature of their output power by adjusting the relationship between the output voltage amplitude and the system voltage amplitude: when the output voltage amplitude is greater than the system voltage amplitude, capacitive reactive power is output; when it is less than the system voltage amplitude, inductive reactive power is output. SVGs can provide fast dynamic reactive power compensation, harmonic suppression, voltage transient stability, busbar voltage flicker suppression, load imbalance compensation, load harmonic filtering, and power factor improvement for power grids or loads. They offer advantages unmatched by traditional reactive power compensation devices, including excellent compensation effectiveness, high power density, and operational efficiency.

[0003] However, existing SVG static VAR generator chassis have significant shortcomings during use. SVG chassis typically require multiple communication interfaces for fast connection to other devices to achieve data transmission and control. However, existing SVG chassis' communication interfaces lack specialized shielding and protection, and the interfaces are physically close together, making them susceptible to electromagnetic interference during operation. This interference not only affects the stability of the communication signal but can also cause malfunctions in the SVG chassis and reduce the effectiveness of reactive power compensation. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the communication interfaces of the existing SVG chassis lack a special shielding protection structure, and the physical distance between the interfaces is relatively close, resulting in multiple communication connections easily generating electromagnetic interference during operation.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a protective mechanism, which includes a connecting part, including a socket and a plug connected to the socket; a shielding part, including an upper shielding part, a lower shielding part and a sliding sleeve, the upper shielding part is located in the upper half of the socket, and the lower shielding part is directly opposite to the bottom of the upper shielding part, the sliding sleeve can move away from the plug in a first direction, when the sliding sleeve moves in the first direction, the sliding sleeve can apply a force in a second direction to the lower shielding part, pushing the lower shielding part and the upper shielding part to fit together; a limiting part, including a driving part and a coaxially arranged limiting part, the driving part can rotate in a clockwise or counterclockwise direction, when the sliding sleeve moves in the first direction, the sliding sleeve can drive the driving part to rotate counterclockwise, driving the limiting part to separate from the lower shielding part.

[0006] In a preferred embodiment of the protection mechanism of the present invention: the socket is mounted on the device body, and a return spring is connected between the device body and the sliding sleeve.

[0007] In a preferred embodiment of the protective mechanism described in the present invention: the sliding sleeve is arranged on the outside of the socket, and an arc-shaped groove is opened on the outside of the sliding sleeve; the slider is slidably arranged inside the arc-shaped groove; the lower shielding part is fixedly connected to the end of the slider away from the arc-shaped groove, and is vertically slidably connected to the device body, and a conductive block is provided on the lower shielding part.

[0008] In a preferred embodiment of the protection mechanism of the present invention: the upper shielding portion is fixed on the device body, and a conductive groove is provided on the upper shielding portion.

[0009] In a preferred embodiment of the protective mechanism of the present invention: the limiting member also includes a blocking rod slidably connected to the lower shielding part, the driving part and the limiting part are coaxially fixed through a rotating shaft, a torsion spring is provided on the rotating shaft, and the rotating shaft is rotatably set on the lower shielding part.

[0010] In a preferred embodiment of the protection mechanism of the present invention: a slot is provided on the lower shielding portion, and when the lower shielding portion slides upward, the blocking rod squeezes the driving portion, and the driving portion rotates and pushes the limiting portion to separate from the slot.

[0011] In a preferred embodiment of the protection mechanism of the present invention, a protruding trigger block is provided on the sliding sleeve, and the plug first contacts the trigger block when plugged in, thereby pushing the sliding sleeve to slide.

[0012] In a preferred embodiment of the protection mechanism of the present invention, the protection mechanism further comprises a telescopic member, which includes a pressure plate fixed to the top of the rotating shaft and a pressure cylinder coaxially arranged with the pressure plate, wherein the pressure cylinder is connected to the telescopic cylinder via a pipe. A conductive block is slidably connected to the top of the telescopic cylinder.

[0013] In a preferred embodiment of the protection mechanism of the present invention: an elastic cleaning layer is fixed inside the protection groove, a deformation hole is provided in the middle of the elastic cleaning layer, and the conductive block can be squeezed through the deformation hole to achieve connection with the conductive groove.

[0014] In order to solve the above technical problems, the present invention also provides the following technical solutions: a reactive power compensation generating device, comprising a protective mechanism, and a sliding member and a cooling member arranged on the outside of the device body; the sliding member is sleeved on the outside of the socket and fixed to the device body, and the sliding member is provided with a groove for accommodating the sliding of the trigger block; the cooling member includes a cooling hole opened on one side of the device body.

[0015] The beneficial effects of the present invention are as follows: the insertion of the plug into the socket drives the sleeve to slide in a first direction, and the coordinated action of the arcuate groove and the slider controls the lower shield portion to mate with the upper shield portion in a second direction, establishing electrical conduction and achieving electromagnetic shielding. When the plug is separated, a return spring drives the sleeve to slide in the opposite direction, automatically returning to the non-shielding state without additional manual operation.

[0016] The lower shield is mechanically locked in the unshielded state by the combination of the rotating shaft and the torsion spring. When the plug is disconnected, the sliding sleeve resets, driving the lever to release the driver. The driver, activated by the torsion spring, rotates, driving the limiter to engage the slot in the lower shield, firmly securing the lower shield in place and effectively preventing malfunctions caused by external interference.

[0017] By providing an elastic cleaning layer and its deformable holes within the protective slots of the lower shield, the conductive blocks are scraped by the elastic cleaning layer as they slide, automatically removing surface dust and oxides. When the conductive blocks pass through the deformable holes and contact the conductive slots of the upper shield, they ensure a stable electrical connection with the clean conductive surface, significantly improving electromagnetic shielding effectiveness and resolving the problem of poor contact caused by contamination in traditional conductive components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0019] Figure 1 A perspective view of a connector of a protective mechanism is shown;

[0020] Figure 2 Shows the overall diagram of the protection mechanism;

[0021] Figure 3 A demonstration diagram showing the combined upper and lower shielding parts of the protective mechanism is shown;

[0022] Figure 4 A three-dimensional diagram of a limiting member of a protective mechanism is shown;

[0023] Figure 5 A top view of the telescopic member of the protective mechanism is shown;

[0024] Figure 6 A partial enlarged view of the conductive block of the protection mechanism is shown;

[0025] Figure 7 A perspective view of the elastic cleaning layer of the protective mechanism is shown. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0027] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0028] Reference Figure 1-4 , this embodiment provides a protective mechanism, including a connecting member 1, including a socket 11 and a plug plugged into the socket 11; a shielding member 2, including an upper shielding portion 21, a lower shielding portion 22 and a sliding sleeve 23, the upper shielding portion 21 is located in the upper half of the socket 11, the lower shielding portion 22 is directly opposite to the lower portion of the upper shielding portion 21, the sliding sleeve 23 can move away from the plug in a first direction, when the sliding sleeve 23 moves in the first direction, the sliding sleeve 23 can apply a force in a second direction to the lower shielding portion 22, pushing the lower shielding portion 22 and the upper shielding portion 21 to fit together; a limiting member 3, including a driving portion 31 and a coaxially arranged limiting portion 32, the driving portion 31 can rotate in a clockwise or counterclockwise direction, when the sliding sleeve 23 moves in the first direction, the sliding sleeve 23 can drive the driving portion 31 to rotate counterclockwise, driving the limiting portion 32 to separate from the lower shielding portion 22.

[0029] In this embodiment, the connector 1 includes a socket 11 and a plug. The socket 11 is fixed to the device body 111, and the plug can be plugged into the socket 11 to achieve mechanical and electrical connection.

[0030] The socket 11 serves as a fixed end and provides a connection interface for the plug; the plug triggers subsequent shielding and conductive mechanisms through the plugging action.

[0031] A sliding sleeve 23 is provided on the outer side of the socket 11 . When the plug is inserted, the sliding sleeve 23 is pressed against the sliding sleeve 23 , driving the sliding sleeve 23 to slide in a first direction, ie, a direction away from the plug, usually in an axial direction.

[0032] The upper shielding portion 21 is located at the upper half of the socket 11 and serves as a component of the shielding structure.

[0033] The lower shielding portion 22 is located directly below the upper shielding portion 21 and is vertically slidably connected to the device body 111 , and can move in a second direction (usually an up and down sliding direction perpendicular to the plug insertion direction).

[0034] The sliding sleeve 23 is sleeved on the outer side of the socket 11 and can slide along the first direction.

[0035] The shielding member 2 drives the lower shielding portion 22 and the upper shielding portion 21 to fit together or separate from each other through the sliding of the sliding sleeve 23 , thereby switching between the shielding state and the non-shielding state.

[0036] When the plug is inserted, the plug presses the sleeve 23, causing the sleeve 23 to slide in the first direction. The slider 24 drives the lower shield 22 to rise in the second direction until it contacts the upper shield 21. At this point, the lower shield 22 and the upper shield 21 are electrically connected, completing electromagnetic shielding.

[0037] When the plug is separated from the socket 11 , the sliding sleeve 23 is no longer pressed by the plug and slides back in the first direction to enter the non-shielding state.

[0038] The limiting member 3 includes a driving portion 31 and a limiting portion 32, which are coaxially fixed and can rotate in a clockwise or counterclockwise direction.

[0039] The limiting member 3 is used to fix the position of the lower shielding portion 22 in the non-shielding state to improve stability, and to unlock the lower shielding portion 22 in the shielding state to allow it to slide normally.

[0040] Unshielded state: When the plug is separated from the socket 11, the sleeve 23 returns to its original position, and the driving portion 31 rotates counterclockwise downward, driving the coaxial stop portion 32 to rotate. When the lower shield portion 22 descends to a predetermined distance, the latching slot 223 on the lower shield portion 22 engages with the stop portion 32, securing the lower shield portion 22 and preventing it from sliding due to external interference, thereby improving the stability of the unshielded state.

[0041] Shielded state: When the plug is inserted, the sleeve 23 slides, causing the drive unit 31 to rotate clockwise, driving the stopper 32 to rotate. Due to the different angles of the drive unit 31 and the stopper 32, the drive unit 31 only needs to rotate slightly to disengage the stopper 32 from the slot 223 on the lower shielding portion 22, unlocking the lower shielding portion 22 and allowing it to slide upward in the second direction and mate with the upper shielding portion 21.

[0042] The sliding sleeve 23 is driven to slide by the plug insertion action, and the shielding and non-shielding states are automatically switched without additional operation, which simplifies use.

[0043] The snap-fit ​​design between the limiting portion 32 and the lower shielding portion 22 ensures that the lower shielding portion 22 is fixed in the non-shielding state to prevent malfunction.

[0044] refer to Figure 1-3In one embodiment provided herein, the socket 11 is mounted on the device body 111, and a return spring is connected between the device body 111 and the sliding sleeve 23. The sliding sleeve 23 is sleeved on the outside of the socket 11 and has an arcuate groove 231 formed on the outside of the sliding sleeve 23. The slider 24 is slidably disposed within the arcuate groove 231. The lower shield 22 is fixedly connected to the end of the slider 24 away from the arcuate groove 231 and is vertically slidably connected to the device body 111. The lower shield 22 is provided with a conductive block 221. The upper shield 21 is fixed to the device body 111 and has a conductive groove 211 formed on the upper shield 21.

[0045] In this embodiment, a sliding sleeve 23 is provided on the outer side of the socket 11 , and when the plug is inserted, the sliding sleeve 23 is squeezed to drive the shielding member 2 to move.

[0046] A return spring is connected between the device body 111 and the sliding sleeve 23. The return spring is a compression spring that is responsible for providing a driving force for returning the sliding sleeve 23 when the plug is separated, ensuring that the sliding sleeve 23 can return to its initial position.

[0047] The sliding sleeve 23 is sleeved on the outside of the socket 11 and can slide along the axial direction (first direction) of the socket 11. An arcuate groove 231 is formed on the outside of the sliding sleeve 23. The arcuate groove 231 is an inclined or curved guide groove for guiding the movement of the slider 24.

[0048] The slider 24 is slidably disposed inside the arc-shaped slot 231 and can move along the path of the arc-shaped slot 231. One end of the slider 24 away from the arc-shaped slot 231 is fixedly connected to the lower shielding portion 22.

[0049] The lower shielding portion 22 is vertically slidably connected to the device body 111 (along the second direction, usually sliding up and down). A conductive block 221 is fixed on the lower shielding portion 22. The conductive block 221 is a protruding structure made of conductive material and is used to contact the conductive slot 211 of the upper shielding portion 21.

[0050] The upper shielding portion 21 is fixed to the device body 111, located in the upper half of the socket 11, and remains stationary relative to the lower shielding portion 22. The upper shielding portion 21 is provided with a conductive slot 211, which is a groove structure matching the conductive block 221 for forming an electrical connection.

[0051] The shielding member 2 drives the lower shielding portion 22 and the upper shielding portion 21 to fit together or separate from each other through the sliding of the sliding sleeve 23 , thereby realizing opening or closing of the electromagnetic shielding.

[0052] Shielding state: When the plug is connected to the receptacle 11, the plug presses against the sliding sleeve 23, causing it to slide in a first direction. The sliding sleeve 23, through the arcuate slot 231, presses against the slider 24. The slider 24 moves along the guide path of the arcuate slot 231, driving the lower shield 22 upward in a second direction until it abuts against the upper shield 21. At this point, the conductive block 221 on the lower shield 22 inserts into the conductive slot 211 of the upper shield 21, establishing electrical continuity and completing electromagnetic shielding.

[0053] Unshielded state: When the plug is separated from the socket 11, the sliding sleeve 23 is no longer pressed by the plug and, under the thrust of the return spring, slides in the opposite direction (resets) in the first direction. The arcuate groove 231, via the slider 24, drives the lower shielding portion 22 downward in the second direction, separating the conductive block 221 from the conductive groove 211, and the device enters the unshielded state.

[0054] The sliding sleeve 23 and slider 24 form a motion transmission mechanism through the arcuate slot 231. The inclined or curved design of the arcuate slot 231 converts the axial sliding of the sliding sleeve 23 into a composite motion (including horizontal and vertical components) of the slider 24, ultimately driving the vertical sliding of the lower shield 22, ensuring precise and smooth motion.

[0055] The vertical sliding connection between the lower shielding portion 22 and the device body 111 is achieved through a slide rail or a guide groove, ensuring that the lower shielding portion 22 only moves along the second direction to avoid deviation.

[0056] The relative positions of the upper shielding portion 21 and the lower shielding portion 22 are fixed, and the precise alignment of the conductive block 221 and the conductive slot 211 ensures the reliability of the electrical connection.

[0057] The connection between the return spring and the sliding sleeve 23 ensures that the sliding sleeve 23 can be quickly returned to its original position when no external force is applied, thereby driving the lower shielding portion 22 to return to its non-shielding state.

[0058] The arc groove 231 can be a single continuous curved groove, distributed along the circumference of the outer side of the sliding sleeve 23, and the inclination angle is designed according to the movement stroke (such as 30°-60°).

[0059] The arcuate groove 231 may also be a multi-segment groove including straight segments and curved segments, so as to achieve phased movement of the slider 24 and optimize movement smoothness.

[0060] The inner surface of the arc groove 231 may be provided with a lubricating coating or balls to reduce the sliding resistance of the slider 24 and increase the service life.

[0061] refer to Figure 1 and Figure 4As an optional embodiment, the limiting member 3 further includes a blocking rod 222 slidably connected to the lower shielding portion 22. The driving portion 31 and the limiting portion 32 are coaxially fixed via a rotating shaft 311. The rotating shaft 311 is provided with a torsion spring 312, and the rotating shaft 311 is rotatably mounted on the lower shielding portion 22. When the plug is separated from the socket 11, the sliding sleeve 23 returns to its original position, causing the blocking rod 222 to no longer press the driving portion 31. The driving portion 31 returns to its original position and rotates under the action of the torsion spring 312, causing the limiting portion 32 to rotate accordingly. When the lower shielding portion 22 slides down to a preset distance, the lower shielding portion 22 engages with the limiting portion 32 to secure the lower shielding portion 22, thereby improving stability in the non-shielding state.

[0062] In this embodiment, the blocking rod 222 is slidably connected to the lower shield portion 22 and can move with the sliding of the lower shield portion 22 while maintaining a linkage relationship with the sliding sleeve 23. The blocking rod 222 is an L-shaped rod structure, one end of which is slidably connected to the bottom of the sliding sleeve 23 and the other end can contact the driving portion 31.

[0063] The driving portion 31 is fixed by the rotating shaft 311 and is coaxially arranged with the rotating shaft 311. The driving portion 31 is a structure with a certain angle or a protrusion, and can be rotated by being squeezed by the blocking rod 222.

[0064] The limiting portion 32 is coaxially fixed to the rotating shaft 311 with the driving portion 31 . The limiting portion 32 has a snap-fitting portion (such as a protrusion or a hook-shaped structure) for snapping into the snap-fitting slot 223 on the lower shielding portion 22 .

[0065] The rotating shaft 311 is rotatably mounted on the lower shielding portion 22 and serves as a rotational support for the driving portion 31 and the limiting portion 32. A torsion spring 312 is mounted on the rotating shaft 311 to provide elastic force for resetting the driving portion 31 and the limiting portion 32.

[0066] The torsion spring 312 is wound around the rotating shaft 311 , with one end fixed to the rotating shaft 311 and the other end fixed to the lower shielding portion 22 , providing a counterclockwise or clockwise restoring rotational force.

[0067] The sliding connection between the blocking rod 222 and the lower shielding portion 22 is achieved through a sliding groove, which ensures that the blocking rod 222 can move along the sliding direction of the lower shielding portion 22 without interfering with the vertical sliding of the lower shielding portion 22.

[0068] The main function of the limiter 3 is to fix the position of the lower shielding part 22 in the non-shielding state to prevent it from sliding due to external force. At the same time, when the shielding state is switched, the limiter 32 is unlocked by rotating the driving part 31, allowing the lower shielding part 22 to slide freely.

[0069] Unshielded state fixed: When the plug is separated from the socket 11, the sliding sleeve 23 returns to its original position under the action of the return spring, driving the stopper 222 to move so that the stopper 222 no longer presses against the driver 31. Under the elastic force of the torsion spring 312, the driver 31 returns to its original position and rotates (typically clockwise), driving the coaxial stopper 32 to rotate synchronously. When the lower shielding portion 22 slides down to a predetermined distance, the latching groove 223 on the lower shielding portion 22 engages with the latching portion of the stopper 32, locking the lower shielding portion 22 and preventing it from sliding up and down, thereby improving the stability of the unshielded state.

[0070] Unlocking the shielding state: When a plug is inserted into the socket 11, the sliding sleeve 23 is squeezed and slid by the plug, first driving the blocking rod 222 to squeeze the driving portion 31. The driving portion 31 rotates clockwise, driving the limiting portion 32 to rotate, separating the limiting portion 32 from the retaining groove 223 of the lower shield portion 22, unlocking the lower shield portion 22, allowing it to slide upward in the second direction (vertical direction) driven by the slider 24 and mate with the upper shield portion 21, achieving electromagnetic shielding.

[0071] "Snap-fit" refers to the protrusion or hook-like structure of the limiter 32 being inserted into the slot 223 of the lower shield 22, forming a mechanical lock. The shape of the slot 223 (e.g., rectangular or trapezoidal) matches the snap-fit ​​portion of the limiter 32, ensuring secure locking and smooth unlocking.

[0072] The snap-fit ​​design between the limiting portion 32 and the lower shielding portion 22 effectively prevents the lower shielding portion 22 from accidentally sliding in the non-shielding state through mechanical locking, thereby enhancing the anti-interference capability of the device.

[0073] refer to Figure 1 and Figure 4 As an optional embodiment, a slot 223 is provided on the lower shielding part 22. When the lower shielding part 22 slides upward, the blocking rod 222 squeezes the driving part 31, and the driving part 31 rotates and pushes the limiting part 32 to separate from the slot 223, thereby unlocking the lower shielding part 22 and allowing the lower shielding part 22 to slide normally.

[0074] In this embodiment, the locking slot 223 is provided on the lower shielding portion 22 and is a recessed structure, and is used to match with the locking portion of the limiting portion 32 to form a locked or unlocked state.

[0075] The blocking rod 222 is slidably connected to the lower shielding portion 22 and slides along the second direction (vertical direction) with the lower shielding portion 22 . At the same time, the blocking rod 222 is connected to the sliding sleeve 23 and moves along the first direction (axial direction) with the sliding sleeve 23 .

[0076] The driving portion 31 is coaxially fixed to the lower shielding portion 22 via a rotating shaft 311 and can rotate clockwise or counterclockwise around the rotating shaft 311. The driving portion 31 has a protrusion or an inclined surface structure for receiving the extrusion force of the blocking rod 222 and converting it into rotational motion.

[0077] The setting angles of the driving part 31 and the limiting part 32 are different, which means that there are differences in the initial angles or geometric shapes of the two on the rotating shaft 311 (for example, the angles between the protrusion of the driving part 31 and the clamping part of the limiting part 32 in the circumferential direction are different), so that a small rotation of the driving part 31 can amplify the rotation angle of the limiting part 32 and quickly achieve unlocking.

[0078] Unlocking process: When a plug is inserted into the socket 11, the sliding sleeve 23 is squeezed by the plug and slides in the first direction, driving the blocking rod 222. The blocking rod 222 squeezes the driving portion 31, causing the driving portion 31 to rotate counterclockwise around the rotation axis 311 or in a designated direction, pushing the coaxial stopper 32 to rotate. The engaging portion of the stopper 32 disengages from the retaining groove 223 on the lower shield portion 22, releasing the lock on the lower shield portion 22. Driven by the slider 24, the lower shield portion 22 slides upward in the second direction, abutting against the upper shield portion 21 to achieve electromagnetic shielding.

[0079] refer to Figure 1 and Figure 4-7 As an optional embodiment, a protruding trigger block 232 is provided on the sliding sleeve 23. When the plug is plugged in, it first contacts the trigger block 232, thereby pushing the sliding sleeve 23 to slide.

[0080] The device further includes a telescopic member 5, which comprises a pressure plate 51 fixed to the top of the rotating shaft 311 and a pressure cylinder 52 coaxially arranged with the pressure plate 51. The pressure cylinder 52 is connected to a telescopic cylinder 53 via a pipe. When the rotating shaft 311 rotates, the pressure plate 51 rotates accordingly, transporting the medium inside the pressure cylinder 52 into the telescopic cylinder 53, thereby pushing the conductive block 221 to slide upward and emerge from the protective groove on the lower shielding portion 22.

[0081] An elastic cleaning layer 234 is fixed inside the protective groove. A deformation hole is provided in the middle of the elastic cleaning layer 234 . The conductive block 221 can be squeezed through the deformation hole to achieve connection with the conductive groove 211 .

[0082] In this embodiment, the trigger block 232 is protrudingly provided on the sliding sleeve 23 and is generally a raised structure (such as an annular flange or a local protrusion) on the sliding sleeve 23 , matching the front contact surface of the plug.

[0083] The trigger block 232 is used to receive the initial squeezing force of the plug, push the sliding sleeve 23 to slide, and trigger the action of the shielding mechanism.

[0084] When the plug is inserted into the socket 11, the front end of the plug first contacts the trigger block 232, generating an axial thrust that pushes the sleeve 23 to slide in the first direction. The sleeve 23 drives the lower shielding portion 22 upward through the arc groove 231 and the slider 24, achieving the switching of the shielding state.

[0085] The protruding design of the trigger block 232 ensures that the plug can reliably contact the sliding sleeve 23 at the initial stage of insertion, thereby avoiding sliding delay or failure and improving trigger sensitivity.

[0086] The protruding height of the trigger block 232 is designed according to the insertion stroke of the plug (eg, 1-3 mm), ensuring that sufficient thrust can be applied to the plug at the initial insertion stage.

[0087] The material of the trigger block 232 can be consistent with that of the sliding sleeve 23 (such as metal or high-strength plastic), and the surface can be provided with a wear-resistant coating to reduce friction and wear with the plug.

[0088] The pressure plate 51 is fixed to the top of the rotating shaft 311 and rotates coaxially with the rotating shaft 311. The pressure plate 51 is a circular or fan-shaped plate structure, located inside the pressure cylinder 52, and is sealed and slidably connected to the inner wall of the pressure cylinder 52.

[0089] The pressure cylinder 52 is fixed on the lower shielding portion 22 , is filled with a medium (such as hydraulic oil or compressed gas), and is connected to the telescopic cylinder 53 through a pipeline.

[0090] The telescopic cylinder 53 is connected to the pressure cylinder 52 through a pipeline, and a piston or elastic membrane is provided inside the telescopic cylinder 53, which is connected to the conductive block 221 to push the conductive block 221 to slide.

[0091] The telescopic member 5 drives the pressure plate 51 by rotating the rotating shaft 311 to transport the medium in the pressure cylinder 52 to the telescopic cylinder 53, pushing the conductive block 221 to slide upward, exposing the protective groove of the lower shielding part 22 and connecting with the conductive groove 211 of the upper shielding part 21.

[0092] When the plug is inserted into the contact sleeve 23 and slides, the blocking rod 222 presses the driving part 31, which drives the rotating shaft 311 to rotate. The rotating shaft 311 drives the pressure plate 51 to rotate in the pressure cylinder 52, compressing or pushing the medium in the pressure cylinder 52 into the telescopic cylinder 53 through the pipeline.

[0093] The medium pressure in the telescopic cylinder 53 pushes the piston or elastic membrane to move, driving the conductive block 221 to slide up along the protection groove, exposing the lower shielding part 22 and contacting the conductive groove 211 of the upper shielding part 21 to form electrical conduction and complete electromagnetic shielding.

[0094] When the plug is separated, the sleeve 23 is reset, the blocking rod 222 no longer squeezes the driving part 31, the rotating shaft 311 is reset under the action of the torsion spring 312, the pressure plate 51 rotates in the opposite direction, the medium flows back, and the conductive block 221 slides down into the protective groove, disconnecting from the conductive groove 211 and entering the non-shielding state.

[0095] The medium of the pressure cylinder 52 and the telescopic cylinder 53 can be incompressible hydraulic oil to ensure accurate pressure transmission; or compressed gas to provide flexible drive to adapt to different stroke requirements.

[0096] The protection groove is provided on the lower shielding portion 22 and is a groove structure for accommodating the conductive block 221 . The conductive block 221 can slide in the protection groove.

[0097] The elastic cleaning layer 234 is fixed inside the protective groove and is usually a thin layer made of elastic material (such as silicone or sponge layer) with a deformation hole in the middle. The deformation hole is an elastically deformable pore with a size slightly smaller than the cross section of the conductive block 221.

[0098] When the telescopic cylinder 53 pushes the conductive block 221 to slide upward, the conductive block 221 is squeezed through the deformation hole in the protective groove, and the elastic cleaning layer 234 scrapes the surface of the conductive block 221 at the deformation hole to remove dust or oxides, ensuring that the surface of the conductive block 221 is clean.

[0099] After the conductive block 221 is exposed from the protection slot, it precisely contacts the conductive slot 211 of the upper shielding portion 21 to form a stable electrical conduction and complete electromagnetic shielding.

[0100] When the conductive block 221 slides back into the protection groove, the deformed holes scrape the surface of the conductive block 221 again, keeping it clean and extending the stability of the conductive performance.

[0101] Reference Figure 2 This embodiment provides a reactive power compensation generating device, including a sliding member 112 and a cooling member 113 provided on the outside of the device body 111; the sliding member 112 is sleeved on the outside of the socket 11 and fixed to the device body 111, and a groove is provided on the sliding member 112 to accommodate the sliding of the trigger block 232; the cooling member 113 includes a cooling hole provided on one side of the device body 111.

[0102] In this embodiment, the sliding member 112 is sleeved on the outside of the socket 11 and can be made of metal or high-strength plastic. It is fixed to the device body 111 by bolts, snaps, or welding. The inner side of the sliding member 112 contacts the outer side of the trigger block 232, providing support for the sliding of the trigger block 232.

[0103] The slot is provided on the outside or inside of the sliding member 112 and is a long or curved guide groove whose size and shape match the trigger block 232. The path of the slot is consistent with the sliding direction (first direction, i.e., axial direction) of the trigger block 232, and is used to limit the sliding trajectory of the trigger block 232.

[0104] Cooling holes are holes that extend through or partially through the device body 111. They are located on the side of the device body 111 near the socket 11 or the shield 2 and are used to facilitate air circulation or heat dissipation. The shape of the cooling holes can be circular, rectangular, or grid-like, and the number and layout of the cooling holes are designed according to the heat dissipation requirements.

[0105] The cooling holes promote air convection between the inside and outside of the device body 111 or directly conduct heat to the external environment, thereby reducing the temperature of the device body 111 and its internal components and preventing heat accumulation.

[0106] The cooling holes are arranged close to the socket 11 and the shielding member 2 to dissipate the heat generated by the connector 1 and the conductive components in a targeted manner, thereby protecting the components from high temperature.

[0107] The cooling holes may be equipped with dustproof nets or filter membranes to prevent dust or particles from entering the device body 111 and affecting the cleanliness of internal components.

[0108] The layout of the cooling holes can be evenly distributed on one side of the device body 111 to form a convection channel; or concentrated in the area close to the conductive block 221 and the conductive slot 211 for targeted heat dissipation.

[0109] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A protective mechanism, characterized in that: include, A connector (1) comprising a socket (11) and a plug; A shielding member (2) comprises an upper shielding portion (21), a lower shielding portion (22) and a sliding sleeve (23), wherein the upper shielding portion (21) is located at the upper half of the socket (11), the lower shielding portion (22) is directly opposite to the lower portion of the upper shielding portion (21), and the sliding sleeve (23) can move away from the plug in a first direction. When the sliding sleeve (23) moves in the first direction, the sliding sleeve (23) can apply a force in a second direction to the lower shielding portion (22), thereby pushing the lower shielding portion (22) and the upper shielding portion (21) to fit together. The limiting member (3) comprises a driving portion (31) and a coaxially arranged limiting portion (32); the driving portion (31) can rotate in a clockwise or counterclockwise direction; when the sliding sleeve (23) moves in a first direction, the sliding sleeve (23) can drive the driving portion (31) to rotate counterclockwise, thereby driving the limiting portion (32) to separate from the lower shielding portion (22).

2. The protection mechanism according to claim 1, characterized in that: The socket (11) is mounted on the device body (111), and a return spring is connected between the device body (111) and the sliding sleeve (23).

3. The protection mechanism according to claim 2, characterized in that: The sliding sleeve (23) is sleeved on the outside of the socket (11), and an arc-shaped groove (231) is formed on the outside of the sliding sleeve (23); A slider (24) is slidably disposed inside the arc-shaped groove (231); The lower shielding portion (22) is fixedly connected to one end of the slider (24) away from the arc-shaped slot (231), and is vertically slidably connected to the device body (111). A conductive block (221) is provided on the lower shielding portion (22).

4. The protection mechanism according to any one of claims 1 to 3, characterized in that: The upper shielding part (21) is fixed on the device body (111), and a conductive slot (211) is provided on the upper shielding part (21).

5. The protection mechanism according to claim 4, characterized in that: The limiting member (3) further includes a blocking rod (222) slidably connected to the lower shielding portion (22), and the driving portion (31) and the limiting portion (32) are coaxially fixed via a rotating shaft (311). A torsion spring (312) is provided on the rotating shaft (311), and the rotating shaft (311) is rotatably arranged on the lower shielding portion (22).

6. The protection mechanism according to claim 5, characterized in that: A slot (223) is provided on the lower shielding portion (22); when the lower shielding portion (22) slides upward, the blocking rod (222) presses the driving portion (31), and the driving portion (31) rotates and pushes the limiting portion (32) to separate from the slot (223).

7. The protection mechanism according to claim 2, characterized in that: The sliding sleeve (23) is provided with a protruding trigger block (232).

8. The protection mechanism according to claim 7, characterized in that: The invention also includes a telescopic member (5), which includes a pressure plate (51) fixed to the top of the rotating shaft (311) and a pressure cylinder (52) coaxially arranged with the pressure plate (51), wherein the pressure cylinder (52) is connected to a telescopic cylinder (53) through a pipeline, and the top of the telescopic cylinder (53) is slidably connected to a conductive block (221).

9. The protection mechanism according to claim 8, characterized in that: The lower shielding portion (22) is provided with a protective groove for accommodating the telescopic cylinder (53), an elastic cleaning layer (234) is fixed inside the protective groove, a deformation hole is provided in the middle of the elastic cleaning layer (234), and the conductive block (221) can be squeezed through the deformation hole.

10. A reactive power compensation generating device, characterized in that: A protective mechanism comprising any one of claims 7 to 9, and A sliding member (112) and a cooling member (113) are arranged outside the device body (111); The sliding member (112) is sleeved on the outside of the socket (11) and fixed to the device body (111); the sliding member (112) is provided with a slot for accommodating the sliding of the trigger block (232); The cooling member (113) includes a cooling hole opened on one side of the device body (111).

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