A smart grid based perception interlocking switch cabinet and a use method thereof

Abstract

This invention discloses a smart grid-based sensing interlocking switchgear and its usage method, including a cabinet, a slide rail, a pull-out panel, a maintenance component, a release component, and a grounding component. The cabinet has a first side wall opposite to the cabinet door and two second side walls perpendicular to the cabinet door. Multiple capacitor elements are fixed to the inner surface of the first side wall. The slide rail is fixed to the inner surface of the second side wall. A slider is slidably connected to the slide rail. The pull-out panel is fixed to the slider, and multiple electrical components electrically connected to the capacitor elements are fixed to the top surface of the pull-out panel. The maintenance component is installed inside the cabinet to pull the pull-out panel out of the cabinet. The release component is installed inside the cabinet to release the residual voltage of the capacitor elements. The grounding component is installed inside the cabinet to discharge the residual charge within the capacitor elements. This invention solves the problems in the prior art where insufficient maintenance space, inconvenient operation, and unreleased residual high voltage lead to direct electric shock hazards, and the slow release of residual charge leads to secondary electric shock hazards.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, and more specifically to a smart grid-based sensing interlocking switchgear and its usage method. Background Technology

[0002] Switchgear is a key piece of equipment in power systems used for controlling, protecting, and distributing electrical energy, and is widely used in substations, factories, data centers, and other locations. However, existing switchgear has many problems and safety hazards during maintenance and operation, mainly in the following aspects:

[0003] 1. Insufficient maintenance space and inconvenient operation. Traditional switchgear has a compact internal structure and limited space, making it very difficult for operators to perform routine inspections, maintenance, or replacement of internal components (such as capacitors and electrical components). This not only increases maintenance time and labor intensity but may also lead to operators using non-standard operating procedures, thereby increasing safety risks.

[0004] 2. Residual high voltage remains, posing a direct risk of electric shock. Even after power is cut off, the capacitors inside the switchgear retain high voltage for an extended period. According to safety regulations, they must be manually discharged before maintenance. However, due to limited space and cumbersome procedures, operators may neglect this step due to negligence or a desire to save time. If they then directly contact live parts, a serious electric shock accident can occur.

[0005] 3. The residual charge is slowly released, leading to a risk of secondary electric shock. Even if operators perform an initial discharge according to procedures, residual charge on other electrical components inside the switchgear can still slowly and continuously transfer charge to the discharged capacitors through wires. This can cause dangerous voltage to accumulate again in the capacitors. If maintenance personnel unknowingly come into contact with this, an electric shock accident can still occur. This is a more concealed and easily overlooked safety hazard.

[0006] Furthermore, traditional switchgear requires manual inspection and operation of safety measures (such as discharging and grounding), which not only increases the complexity of operation but also places high demands on the experience and technical skills of maintenance personnel. Negligence or improper operation by operators can easily lead to safety accidents. Due to the limited internal space, maintenance operations require a significant amount of time and effort. Simultaneously, manual discharging and grounding procedures further complicate maintenance, leading to prolonged equipment downtime and impacting the operational efficiency of the power grid or plant.

[0007] Therefore, how to provide an intelligent and automated switchgear that can effectively solve the problems of insufficient maintenance space and residual voltage hazards is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0008] In view of this, the present invention provides a sensing interlocking switchgear based on a smart grid and a method for using it, which solves the problem of insufficient maintenance space inside the existing switchgear cabinet.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A smart grid-based sensing interlocking switchgear includes: A cabinet body with a door hinged to it; the cabinet body has a first side wall opposite to the door and two second side walls perpendicular to the door; multiple capacitor elements are fixed on the inner wall surface of the first side wall. A slide rail is fixed to the inner wall surface of the second side wall; a slider is slidably connected in the track groove of the slide rail. A pull-out plate, the pull-out plate being fixed on the slider, and a plurality of electrical components electrically connected to the plurality of capacitor elements being fixed on the top surface of the pull-out plate; The maintenance assembly includes a slide rod, a fixing head, a sliding ring, a storage block, and a locking rod. The first end of the slide rod is fixed within the slide rail, and its axis is parallel to the sliding direction of the slider. The fixing head is fixed to the second end of the slide rod. The sliding ring is slidably connected to the slide rod. The storage block is fixed to the slider, and a cylindrical groove is provided on the storage block for fitting the slide rod. The locking rod is arranged perpendicular to the slide rod and slidably connected within the storage block. Sliding the slider allows the locking rod to contact the sliding ring, forcing the locking rod and the sliding ring to slide relative to each other to pull the pull-out panel out of the cabinet. A release assembly, installed within the cabinet, is used to release residual voltage from the capacitor element. A grounding assembly is installed inside the cabinet to discharge residual charge delivered by the electrical components to the capacitor elements.

[0010] The beneficial effects of this invention are as follows: During use, the locking rod is confined between the fixed head and the sliding ring. When maintenance of the cabinet is required, the pull-out plate is first pushed to make the locking rod push the sliding ring to slide along the end away from the fixed head. When the sliding ring cannot slide, it will squeeze the locking rod to make it slide. With the push of the pull-out plate, the locking rod can be moved to the side of the sliding ring away from the fixed head. Then, the locking rod is pulled, and the locking rod drives the sliding ring to slide along the direction of the fixed head. When the sliding ring contacts the fixed head, it cannot continue to slide, thus forcing the locking rod to slide. With the pull-out plate pulled, the locking rod can be moved to the side of the fixed head away from the sliding ring. Continuing to pull the pull-out plate will cause the storage block to no longer be fitted with the sliding rod, thereby pulling the pull-out plate out of the cabinet, thereby increasing the maintenance space inside the cabinet and facilitating subsequent maintenance operations. During the process of pulling the pull-out plate out of the cabinet, the release component can release the residual voltage of the capacitor element, and the grounding component can discharge the residual charge transmitted from the electrical components to the capacitor element, reducing the risk of electric shock and improving the safety factor.

[0011] Preferably, the storage block has a placement groove arranged perpendicular to the axis of the sliding rod, and the cavity of the placement groove is connected to the cylindrical groove; the locking rod is slidably connected in the placement groove, and one end of it, corresponding to the side of the sliding ring, is an arc-shaped transition surface and extends into the cylindrical groove; both ends of the sliding ring are arc-shaped surfaces and can slide against the arc-shaped transition surface; the side end face of the fixing head facing the sliding ring is flat. The sliding ring or locking rod can only be driven to slide when the arc-shaped surface on the sliding ring contacts the arc-shaped transition surface of the locking rod. When the flat surface on the fixing head contacts the locking rod, it will not drive the locking rod to slide. Therefore, when pulling the pull-out panel out of the cabinet, a push-then-pull method is required.

[0012] Preferably, the maintenance assembly further includes a sliding plate and a spring; one side of the sliding plate is fixed to the end of the engaging rod away from the arc-shaped transition surface, and its circumferential direction slides against the inner wall of the placement groove; the spring is located in the placement groove, with one end fixed to the other side of the sliding plate and the other end fixed to the inner wall of the placement groove corresponding to the axis of the engaging rod. Sliding of the engaging rod allows the sliding plate to compress the spring; when the engaging rod is not in contact with the sliding ring, the spring's return mechanism can cause the engaging rod to return to its original position.

[0013] Preferably, the slide rail has an axially formed track groove, and a mounting plate is fixed to the end of the slide rod away from the fixing head; the mounting plate is bolted to the inner wall of the track groove corresponding to the first side wall; the storage block is fixed to the end of the slider corresponding to the first side wall. The track groove enables the slider to slide, and both the storage block and the slide rod are located at the end of the cabinet away from the cabinet door, ensuring that the pull-out panel can be pulled out of the cabinet when pushed or pulled out, thereby increasing the maintenance space inside the cabinet.

[0014] Preferably, the release assembly includes a connecting rod, a storage wheel, a pull rope, a reciprocating plate, and a support plate; a grounding box is fixed to the outer wall of the cabinet; there are multiple connecting rods, one end of which is vertically rotatably connected to the inner wall surface of the second side wall; the storage wheel is fixed to the connecting rod; one end of the pull rope is wound around the storage wheel, and the other end is fixed to the bottom surface of the pull-out plate; the lower end of the reciprocating plate is drivenly connected to the connecting rod, and the rotation of the connecting rod can drive the reciprocating plate to reciprocate along the height direction of the cabinet; the side end face of the support plate slides against the inner wall surface of the first side wall, and its lower plate surface is fixed to the upper end face of the multiple reciprocating plates; a discharge rod corresponding to each of the multiple capacitor elements is fixed to the top surface of the support plate; the discharge rod is connected to the grounding box through a wire. As the pull-out panel is pulled out of the cabinet, it drives the tensioning linkage to rotate. The rotation of the linkage drives the reciprocating plate to move up and down, thereby causing the support plate to slide up and down along the cabinet. During the sliding process, the support plate enables the discharge rod to contact the capacitor element and force the residual voltage of the capacitor element to be discharged, effectively preventing safety accidents caused by negligence in failing to discharge.

[0015] Preferably, it also includes a guide rod; one end of the guide rod is vertically rotatably connected to the inner wall surface of the second side wall, and one end of the pull rope passes around the guide rod and is fixed to the bottom surface of the pull-out panel. The guide rod guides the trajectory of the pull rope, preventing the pull rope from getting tangled during the process of pulling the pull-out panel out of the cabinet.

[0016] Preferably, it further includes a reset member, the two ends of which are fixed to the first sidewall and the connecting rod respectively to drive the connecting rod to reset and rewind the pull rope.

[0017] Preferably, the grounding assembly includes a mounting box, an air storage box, an extrusion plate, an extrusion cylinder, conductive clamps, and a transmission component; the mounting box has multiple clearance slots on its side wall and is fixed to the top surface of the support plate; the air storage box is fixed inside the mounting box; the upper end of the extrusion plate is fixed to the lower end face of the reciprocating plate, and an extrusion disc is fixed to its lower end; the extrusion cylinder is fixed inside the cabinet by a support component, and the inner cavity of the extrusion cylinder is connected to the air storage box through an air supply pipe; the extrusion disc is slidably connected inside the extrusion cylinder to deliver air from the extrusion cylinder to the air storage box; there are multiple conductive clamps that are rotatably connected to the clearance slots; the transmission component is fixed inside the mounting box and is air-connected to the air storage box and the conductive clamps to drive two adjacent conductive clamps to clamp the capacitor element; the conductive clamps are connected to the grounding box through wires. During the up-and-down movement of the reciprocating plate, the air in the compression cylinder is delivered to the air storage box using the principle of an air pump. As the air pressure in the air storage box increases, the air pressure drives the transmission component to drive the conductive clamp to hold the capacitor element, thereby connecting the capacitor element to the grounding box and continuously conducting away any residual charge that may have been slowly transferred from the electrical components.

[0018] Preferably, the transmission component includes a transmission cylinder, a reciprocating rod, and a drive plate; the transmission cylinder is fixed inside the mounting box, and one end of it is connected to the air storage box via an air inlet pipe; the reciprocating rod is slidably connected to the other end of the transmission cylinder; the drive plate is slidably connected inside the mounting box, and one side of its plate is fixed to the end of the reciprocating rod away from the transmission cylinder; a fixing groove is provided on the upper end of the drive plate; one end of the conductive clamp is fixed with a drive rod, a rotating rod is fixed in the middle, and the other end can clamp the capacitor element; the drive rod is inserted into the fixing groove, and one end of the rotating rod is rotatably connected to the inner bottom wall of the mounting box. As the amount of air in the air storage box increases, it drives the reciprocating rod to slide inside the transmission cylinder, thereby driving the drive plate to slide. During the sliding process, the drive plate causes the conductive clamp to rotate, thereby clamping the capacitor element.

[0019] This invention also provides a method for using a sensing interlocking switchgear based on a smart grid, comprising the following steps: S1. Open the cabinet door and push the pull-out plate to move it along the first side wall; the slider drives the storage block to move, and during the movement, the locking rod slides under the pressure of the sliding ring; after the slider slides to the position, it will move the locking rod to the side of the sliding ring away from the fixed head; S2. Pull the pull-out plate to move it so that the locking rod contacts the sliding ring and drives the sliding ring to slide. When the sliding ring contacts the fixed head, the sliding ring will drive the locking rod to slide. As the pull-out plate is pulled, the locking rod moves to the side of the fixed head away from the sliding ring, so that the storage block is no longer fitted with the sliding rod, and then the pull-out plate is pulled out of the cabinet for subsequent maintenance operations. S3. When the pull-out plate is pulled, the synchronous drive release component releases the residual voltage inside the capacitor element. S4. The release component synchronously drives the grounding component to discharge the residual charge in the capacitor element from the electrical component.

[0020] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a sensing interlocking switchgear based on a smart grid and a method of using it, which has the following beneficial effects: 1. Easy to maintain: By using the pull-out panel and maintenance components, the internal electrical components can be pulled out of the cabinet as a whole, which significantly increases the internal operating space of the cabinet and makes it convenient for staff to carry out inspection and maintenance.

[0021] 2. Preventing accidental operation (automatic discharge): During the process of pulling out the pull-out plate, the release component is automatically triggered simultaneously to force the residual voltage of the capacitor element to discharge. No manual operation is required, which effectively prevents safety accidents caused by negligence in failing to discharge.

[0022] 3. Reliable discharge of residual charge (automatic grounding): After the pull-out panel is pulled into place, the grounding component automatically connects the capacitor element to the ground wire, continuously conducting away any residual charge that may have slowly transferred from the electrical components, providing double safety protection and completely eliminating the risk of electric shock.

[0023] 4. Reduce safety accident costs: Avoid personal injury compensation, reduce equipment short circuits or damage caused by misoperation, and save on the cost of repairing or replacing expensive electrical components.

[0024] 5. Improve operational efficiency and reduce labor costs: Shorten maintenance time. The pull-out design provides ample operating space, making inspection and component replacement faster and more convenient, reducing equipment downtime and improving the operational efficiency of the power grid or factory. At the same time, automated safety measures eliminate the need for manual inspection and operation, reducing reliance on the experience and skill level of maintenance personnel and minimizing the possibility of rework due to human error.

[0025] 6. Enhance Product Competitiveness and Brand Premium: In the context of smart grids and Industry 4.0, high safety and intelligence are the core selling points of high-end electrical equipment. This invention aligns with this trend and can serve as a core differentiating advantage for products, helping manufacturers gain brand premium in the high-end market and win over customers with stringent safety requirements (such as large power plants, data centers, and chemical enterprises). Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the switch cabinet structure provided by the present invention; Figure 2 This is a cross-sectional view of the switch cabinet provided by the present invention; Figure 3 This is a schematic diagram of the internal structure of the cabinet provided by the present invention; Figure 4 This is an installation structure diagram of the release component and grounding component provided by the present invention; Figure 5 This is a schematic diagram of the pull-out plate structure provided by the present invention; Figure 6 This is a schematic diagram of the slide rail structure provided by the present invention; Figure 7 This is a schematic diagram of the slide bar structure provided by the present invention; Figure 8 A cross-sectional view of the storage block provided by the present invention; Figure 9 This is a schematic diagram of the release component structure provided by the present invention; Figure 10 This is a schematic diagram of the reciprocating plate mounting structure provided by the present invention; Figure 11 This is a schematic diagram of the grounding component structure provided by the present invention; Figure 12 This is a cross-sectional view of the extrusion cylinder provided by the present invention; Figure 13 A cross-sectional view of the mounting box provided by the present invention; Figure 14 for Figure 13 Enlarged diagram of part A in the diagram; Figure 15 This is a schematic diagram of the conductive clip structure provided by the present invention; Figure 16 This is a cross-sectional view of the transmission cylinder provided by the present invention.

[0028] Wherein, 1-cabinet body; 11-cabinet door; 12-first side wall; 13-second side wall; 14-grounding box; 15-control panel; 16-capacitor element; 2-Pull-out panel; 21-Handle; 3-Slide rail; 31-Rail groove; 32-Slider; 4-Maintenance components; 41-Slide bar; 42-Fixing head; 43-Sliding ring; 44-Storage block; 441-Cylindrical groove; 442-Placement groove; 45-Clamping rod; 46-Spring; 47-Slide plate; 48-Mounting plate; 5-Release assembly; 51-Connecting rod; 52-Storage wheel; 53-Connecting disc; 54-Cam; 55-Pull rope; 56-Reciprocating plate; 561-Push-pull plate; 562-Long slot; 57-Support plate; 58-Discharge rod; 59-Guide rod; 6-Grounding component; 61-Mounting box; 62-Extrusion rod; 621-Extrusion disc; 622-First one-way valve; 63-Extrusion cylinder; 64-Gas supply pipe; 65-Gas storage box; 651-Pressure relief valve; 66-Transmission cylinder; 661-Inlet pipe; 662-Vacuum pipe; 663-Solenoid valve; 67-Reciprocating rod; 671-Sealing disc; 672-Compression spring; 68-Drive plate; 681-Fixing groove; 69-Conductive clamp; 691-Rotating rod; 692-Drive rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or a welded connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Traditional switchgear has a compact internal structure and limited space, making routine inspections, maintenance, or replacement of internal components (such as capacitors and electrical components) extremely difficult for operators. To save time, operators may resort to non-standard operating methods, which inherently increases safety risks. Even after power is cut off, capacitors within the switchgear retain high voltage for extended periods. Safety regulations require manual discharge before maintenance; however, due to limited space and cumbersome procedures, operators may neglect this step due to negligence or a desire for convenience. Direct contact with live parts can result in severe electric shock. Even if initial discharge is performed according to regulations, residual charge on other electrical components within the switchgear can slowly and continuously transfer charge to the discharged capacitors through conductors, causing them to re-accumulate dangerous voltage. If maintenance personnel unknowingly come into contact with these components, electric shock can also occur—a more insidious and easily overlooked safety hazard.

[0035] See appendix Figure 1According to an embodiment of the present invention, a smart grid-based sensing interlocking switchgear aims to solve the problems in the prior art where insufficient maintenance space, inconvenient operation, and unreleased residual high voltage lead to direct electric shock hazards, and the slow release of residual charge lead to secondary electric shock hazards. The switchgear includes a cabinet 1, a slide rail 3, a pull-out panel 2, a maintenance assembly 4, a release assembly 5, and a grounding assembly 6. A cabinet door 11 is hinged to the cabinet 1. The cabinet 1 has a first side wall 12 opposite to the cabinet door 11 and two second side walls 13 perpendicular to the cabinet door 11. Multiple capacitor elements 16 are fixed to the inner wall surface of the first side wall 12. The slide rail 3 is fixed to the second side wall 11. The inner wall surface of the slide rail 3; a slider 32 is slidably connected in the track groove 31 of the slide rail 3; a pull-out plate 2 is fixed on the slider 32, and multiple electrical components electrically connected to multiple capacitor elements 16 are fixed on the top surface of the pull-out plate 2; a maintenance component 4 is installed in the cabinet 1, and the action of the maintenance component 4 can pull the pull-out plate 2 out of the cabinet 1; a release component 5 is installed in the cabinet 1, and the release component 5 is driven to release the residual voltage of the capacitor element 16 during the process of the pull-out plate 2 being pulled out of the cabinet 1; a grounding component 6 is installed in the cabinet 1, and the action of the release component 5 drives the grounding component 6 to discharge the residual charge transmitted to the capacitor element 16 by the electrical components.

[0036] In this embodiment, the maintenance component 4 includes a slide rod 41, a fixing head 42, a sliding ring 43, a storage block 44, and a locking rod 45. The first end of the slide rod 41 is fixed inside the slide rail 3 and its axis is parallel to the sliding direction of the slider 32. The fixing head 42 is fixed to the second end of the slide rod 41. The sliding ring 43 is slidably connected to the slide rod 41. The storage block 44 is fixed to the slider 32 and has a cylindrical groove 441 on it for fitting the slide rod 41. The locking rod 45 is arranged perpendicular to the slide rod 41 and slidably connected inside the storage block 44. The sliding of the slider 32 allows the locking rod 45 to contact the sliding ring 43 and make the sliding ring 43 slide first. Then, the sliding ring 43 presses the locking rod 45 to achieve the sliding of the locking rod 45. The pull-out panel 2 is pulled out of the cabinet 1 by using a push-pull operation. To further optimize the above technical solution, a placement groove 442 is provided in the storage block 44, which is arranged along the axis of the vertical slide rod 41. The groove cavity of the placement groove 442 is connected to the cylindrical groove 441. The locking rod 45 is slidably connected in the placement groove 442, and one end of it is an arc-shaped transition surface corresponding to the side of the sliding ring 43 and extends into the cylindrical groove 441. Both ends of the sliding ring 43 are arc-shaped surfaces and can slide against the arc-shaped transition surface. The side end face of the fixing head 42 facing the sliding ring 43 is flat.

[0037] like Figure 5As shown in Figure 8, the fixed head is circular, with a cylindrical groove extending through both ends. The outer diameter of the sliding ring is no larger than the outer diameter of the fixed head, while the inner diameter of the cylindrical groove is larger than the outer diameter of the fixed head. The receiving block accommodates both the fixed head and the sliding ring within the cylindrical groove while simultaneously mounting the sliding rod. The two arc surfaces of the sliding ring slide against the transition arc surface on the locking rod. That is, when the locking rod contacts the sliding ring, its length advantage pushes the sliding ring forward. When the sliding ring cannot slide, the arc surface drives the locking rod to slide. Therefore, by utilizing the relative sliding of the sliding ring and the locking rod, a "push-then-pull" operation can be performed on the pull-out panel to pull out the pull-out panel and electrical components from the cabinet, thereby increasing the maintenance space inside the cabinet and facilitating maintenance of electrical and capacitor components.

[0038] To further optimize the above technical solution and achieve self-resetting of the locking rod, the maintenance component 4 also includes a sliding plate 47 and a spring 46; one side of the sliding plate 47 is fixed to the end of the locking rod 45 away from the arc transition surface, and its circumferential direction slides against the inner wall of the placement groove 442; the spring 46 is located in the placement groove 442, and one end of its spring is fixed to the other side of the sliding plate 47, and the other end is fixed to the inner wall of the placement groove 442 corresponding to the axis of the locking rod 45.

[0039] In some other specific embodiments, the slide rail 3 has an axially formed track groove 31, and the slider 32 is slidably connected in the track groove 31; the end of the slide rod 41 away from the fixed head 42 is fixed with a mounting plate 48; the mounting plate 48 is bolted to the inner wall of the track groove 31 corresponding to the first side wall 12; the storage block 44 is fixed to the end of the slider 32 corresponding to the first side wall 12.

[0040] like Figure 3 and 4 As shown, there are two slide rails arranged symmetrically. The two slide rails are fixed to the inner wall surfaces of the two second side walls respectively. The sliders have T-shaped track grooves and are located in the track grooves. The two ends of the pull-out plate are fixed to the two sliders respectively. In order to ensure that the pull-out plate can be pulled out of the cabinet, the storage block and the slide rod are respectively set at one end of the slide rail and the slider corresponding to the first side wall.

[0041] To further optimize the above technical solution and facilitate the push-pull operation of the pull-out panel, a handle 21 is fixed to one end of the pull-out panel 2 corresponding to the cabinet door 11.

[0042] In this embodiment, the release assembly 5 includes a connecting rod 51, a storage wheel 52, a pull rope 55, a reciprocating plate 56, and a support plate 57; a grounding box 14 is fixed to the outer wall of the cabinet 1; there are multiple connecting rods 51, one end of which is vertically rotatably connected to the inner wall surface of the second side wall 13; the storage wheel 52 is fixed to the connecting rod 51; one end of the pull rope 55 is wrapped around the storage wheel 52, and the other end is fixed to the bottom surface of the pull-out plate 2; the lower end of the reciprocating plate 56 is connected to the connecting rod 51, and the rotation of the connecting rod 51 can drive the reciprocating plate 56 to reciprocate along the height direction of the cabinet 1; the side end face of the support plate 57 slides against the inner wall surface of the first side wall 12, and its lower plate surface is fixed to the upper end face of the multiple reciprocating plates 56; a discharge rod 58 corresponding to multiple capacitor elements 16 is fixed to the top surface of the support plate 57; the discharge rod 58 is connected to the grounding box 14 through a wire.

[0043] like Figure 9 and 10 As shown, a connecting plate 53 is fixed to the end of the connecting rod 51 away from the second side wall 13, and a cam 54 is fixed to the side wall of the connecting plate 53 away from its center. A long groove 562 arranged along the height direction of the cabinet 1 is opened at the lower end of the reciprocating plate 56. The cam 54 is fitted into the long groove 562. Using the working principle of the cam mechanism, when the pull plate 2 is pulled, the pull rope 55 will pull the connecting rod 51 synchronously to realize the rotation of the connecting rod. The rotation of the connecting rod 51 is used to realize the reciprocating motion of the reciprocating plate 56. The reciprocating plate 56 can drive the support plate 57 to reciprocate synchronously, thereby causing the discharge rod 58 to move along the surface of the capacitor element 16, thereby forcibly releasing the residual voltage in the capacitor element 16. This avoids the operator from repeatedly discharging the capacitor element 16 without performing the discharge operation, thereby reducing the labor intensity of the operator.

[0044] In some other embodiments, a push-pull plate 561 is fixed to the upper end of the reciprocating plate 56, and the push-pull plate 561 is fixed to the support plate 57. The width of the push-pull plate 561 is smaller than the width of the reciprocating plate 56, and a groove is provided on the surface of the support plate 57. The push-pull plate 561 is embedded in the groove to achieve a fast connection between the reciprocating plate 56 and the support plate 57.

[0045] In some other specific embodiments, to prevent the pull rope 55 from getting tangled during the pulling of the pull plate 2, the release assembly 5 also includes a guide rod 59; one end of the guide rod 59 is vertically rotatably connected to the inner wall surface of the second side wall 13, and one end of the pull rope 55 passes around the guide rod 59 and is fixed to the bottom surface of the pull plate 2.

[0046] To further optimize the above technical solution, the release component 5 also includes a reset component. Both ends of the reset component are fixed to the first sidewall 12 and the connecting rod 51, respectively, to drive the connecting rod 51 to reset and rewind the pull rope 55. The reset component can be a torsion spring. One end of the torsion spring is fixed to the inner wall of the first sidewall 12, and the other end is fixed to the outer wall of the connecting rod 51. After maintenance is completed, the pull plate 2 is reinstalled, and the torsion spring reset can drive the connecting rod 51 to reverse, thereby rewinding the pull rope 55.

[0047] In this embodiment, the grounding assembly 6 includes a mounting box 61, an air storage box 65, an extrusion plate 62, an extrusion cylinder 63, conductive clamps 69, and a transmission component. The mounting box 61 has multiple clearance slots on its side wall and is fixed to the top surface of the support plate 57. The air storage box 65 is fixed inside the mounting box 61. The upper end of the extrusion plate 62 is fixed to the lower end face of the reciprocating plate 56, and an extrusion disc 621 is fixed to its lower end. The extrusion cylinder 63 is fixed inside the cabinet 1 by a support component, and its inner cavity is connected to the air storage box 65 via an air supply pipe 64. The extrusion disc 621 is slidably connected inside the extrusion cylinder 63 to deliver air from the extrusion cylinder 63 to the air storage box 65. Multiple conductive clamps 69 are rotatably connected within the clearance slots. The transmission component is fixed inside the mounting box 61 and connects the air storage box 65 and the conductive clamps 69 via an air path to drive adjacent conductive clamps 69 to clamp the capacitor element 16. The conductive clamps 69 are connected to the grounding box 14 via wires.

[0048] like Figure 11 As shown in Figure -14, using the principle of an air pump, the reciprocating motion of the reciprocating plate can drive the extrusion disc to deliver the compressed air in the extrusion cylinder to the air storage box. As the air pressure in the air storage box increases, the transmission component can drive the conductive clamp to rotate, thereby clamping the capacitor element and grounding the capacitor element. Grounding the capacitor element can discharge residual charge.

[0049] To further optimize the above technical solution, a first one-way valve 622 is fixed on the extrusion disc 621. The function of the first one-way valve 622 is to ensure that air can only be delivered to the air storage box 65 through the extrusion cylinder 62.

[0050] To further optimize the above technical solution, a second one-way valve is provided on the gas delivery pipe, and the gas delivery pipe can be a corrugated pipe or a spiral pipe for stretching or contraction. By setting the second one-way valve, the gas in the gas delivery pipe can be prevented from flowing back into the extrusion cylinder.

[0051] In this embodiment, the grounding box is equipped with several grounding nails, and the bottoms of the grounding nails are in contact with the ground to achieve grounding and conduction operation.

[0052] To further optimize the above technical solution, the transmission components include a transmission cylinder 66, a reciprocating rod 67, and a drive plate 68; the transmission cylinder 66 is fixed inside the mounting box 61 and one end of it is connected to the air storage box 65 through an air inlet pipe 661; the reciprocating rod 67 is slidably connected to the other end of the transmission cylinder 66; the drive plate 68 is slidably connected inside the mounting box 61 and one side of its plate is fixed to the end of the reciprocating rod 67 away from the transmission cylinder 66; a fixing groove 681 is provided on the upper side of the drive plate 68; a drive rod 692 is fixed at one end of the conductive clamp 69, a rotating rod 691 is fixed in the middle, and the other end can clamp the capacitor element 16; the drive rod 692 is inserted into the fixing groove 681, and one end of the rotating rod 691 is rotatably connected to the inner bottom wall of the mounting box 61.

[0053] Air from the pressurizing cylinder is supplied to the transmission cylinder. As the air volume in the transmission cylinder increases, it drives the reciprocating rod to move, which in turn moves the drive plate. For example... Figure 14 As shown, the conductive clamp is in the form of a folded plate. Under the sliding of the drive plate, it can push the drive rod, thereby causing the rotating rod to rotate, thus enabling the conductive clamp to hold the capacitor element and discharge the residual charge.

[0054] The mounting box is a stepped box with a first cavity and a second cavity located above the first cavity. The first cavity and the second cavity are connected to each other. The bottom wall of the second cavity is fixed to the top surface of the support plate and fastens the discharge rod. The side wall of the second cavity is provided with a clearance groove to ensure that the discharge rod can contact the capacitor element. The conductive clips are located on both sides of the discharge rod and one end of them protrudes from the clearance groove. The gas storage box is fixed in the first cavity. The sliding direction of the drive plate is perpendicular to the reciprocating direction of the reciprocating plate.

[0055] To further optimize the above technical solutions, such as Figure 16 As shown, a sealing disc 671 is fixed to one end of the reciprocating rod 67. The circumferential surface of the sealing disc 671 slides against the inner wall of the transmission cylinder 66. One end of the compression spring 672 is fixed to the sealing disc 671, and the other end is fixed to the inner wall of the end of the transmission cylinder 66 away from the reciprocating rod 67. When the transmission cylinder 66 is depressurized, the reciprocating rod 67 can be reset by using the compression spring 672.

[0056] To further optimize the above technical solution, a pressure relief valve 651 is fixed at one end of the air storage box 65 corresponding to the air inlet pipe 661; a vent pipe 662 is fixed on the outer wall of one end of the transmission cylinder 66 corresponding to the air inlet pipe 661, and a solenoid valve 663 is provided on the vent pipe 662; a control panel 15 is fixed on the cabinet door 11, and the control panel 15 is electrically connected to the solenoid valve 663.

[0057] When the conductive clamp needs to be reset after maintenance, the solenoid valve is opened via the control panel, allowing the compressed gas inside the transmission cylinder to be discharged through the vent pipe. Previously, when the sealing disc drives the reciprocating rod to move, the pressure spring is pulled synchronously. When the compressed gas inside the transmission cylinder is released, the pressure spring resets and causes the reciprocating rod to drive the drive plate back to its original state. The drive plate pulls the drive rod, thereby reversing the rotation rod and restoring the conductive clamp to its initial state.

[0058] This invention also discloses a method for using a sensing interlocking switchgear based on a smart grid, comprising the following steps: S1. Open the cabinet door 11, wear insulating gloves and use the handle 21 to push the pull plate 2 to move it along the first side wall 12; the slider 32 drives the storage block 44 to move along the first side wall 12. During the movement, the locking rod 45 first touches the sliding ring 43 and drives the sliding ring 43 to slide along the mounting plate 48. When the sliding ring 43 contacts the mounting plate 48, due to the action of the arc surface on the sliding ring 43 and the arc transition surface on the locking rod 45, the locking rod 45 slides under the pressure of the sliding ring 43; after the slider 32 slides to the position, it will move the locking rod 45 to the side of the sliding ring 43 away from the fixed head 42.

[0059] S2. Pull the pull-out plate 2 to move it so that the locking rod 45 contacts the sliding ring 43 and drives the sliding ring 43 to slide. When the sliding ring 43 contacts the fixed head 42, the sliding ring 43 will drive the locking rod 45 to slide. As the pull-out plate 2 is pulled, the locking rod 45 moves to the side of the fixed head 42 away from the sliding ring 43, so that the storage block 44 is no longer fitted with the sliding rod 41, and then the pull-out plate 2 is pulled out from the cabinet 1 for subsequent maintenance operations.

[0060] S3. When the pull plate 2 is pulled, the synchronous drive release component 5 releases the residual voltage inside the capacitor element 16; the pull rope 55 pulls the connecting rod 51 to rotate. As the length of the pull rope 55 continues to extend, the rotation of the connecting rod 51 drives the reciprocating plate 55 to move up and down, which in turn causes the support plate 57 to move back and forth, thereby causing the discharge rod 58 to slide along the surface of the capacitor element 16 to release the residual voltage.

[0061] S4. Release component 5 synchronously drives grounding component 6 to discharge residual charge in capacitor element 16. During the reciprocating motion of reciprocating plate 55, the extrusion rod 62 and extrusion disc 621 continuously transport air in extrusion cylinder 63 to air storage box 65 through air supply pipe. When pull plate 2 is completely pulled out of cabinet 1, reciprocating plate 55 stops moving. At this time, the air pressure in air storage box 65 reaches the threshold of pressure relief valve 651. Pressure relief valve 651 opens and transports air in air storage box 65 to transmission cylinder 66 through air inlet pipe 661. As the air pressure in transmission cylinder 66 increases, it pushes sealing disc 671 and reciprocating rod 67 to move, thereby pushing drive plate 68 to move in the direction of capacitor element 16. Drive plate 68 applies a pushing force to drive rod 692, causing conductive clamp 69 to rotate around rotating rod 691, so that conductive clamp 69 clamps the two ends of capacitor element 16 to discharge residual charge.

[0062] S5. When the conductive clamp 69 needs to be reset after maintenance, the solenoid valve 663 is opened by the control panel 15, so that the compressed gas inside the transmission cylinder 66 is discharged through the vent pipe 662. Previously, when the sealing disc 671 drives the reciprocating rod 67 to move, the pressure spring 672 is pulled synchronously. When the compressed gas inside the transmission cylinder 66 is released, the pressure spring 672 is reset and the reciprocating rod 67 drives the drive plate 68 to return to its original state. The drive plate 68 pulls the drive rod 692, thereby realizing the reverse rotation of the rotating rod 691 and restoring the conductive clamp 69 to its initial state.

[0063] It should be noted that since the end face of the fixing head is flat, when the locking rod comes into contact with the fixing head alone, the locking rod will not slide due to the length limitation of the locking rod. The locking rod will only slide when the sliding ring is not sliding and the arc transition surface on the locking rod contacts the arc surface on the sliding ring. Therefore, the process of pulling the pull-out panel out of the cabinet is to perform a "push first, then pull" operation.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0065] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. 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 the invention. Therefore, the invention 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 sensing-interlocked switchgear based on a smart grid, characterized in that, include: Cabinet (1), with cabinet door (11) hinged on the cabinet (1); the cabinet (1) has a first side wall (12) opposite to the cabinet door (11) and two second side walls (13) perpendicular to the cabinet door (11); a plurality of capacitor elements (16) are fixed on the inner wall surface of the first side wall (12). The slide rail (3) is fixed to the inner wall surface of the second side wall (13); a slider (32) is slidably connected in the track groove (31) of the slide rail (3). A pull-out plate (2) is fixed on the slider (32), and a plurality of electrical components electrically connected to a plurality of capacitor elements (16) are fixed on the top surface of the pull-out plate (2). Maintenance component (4), the maintenance component (4) includes a slide rod (41), a fixing head (42), a sliding ring (43), a storage block (44), and a locking rod (45); the first end of the slide rod (41) is fixed in the track groove (31) and its axis is parallel to the sliding direction of the slider (32); the fixing head (42) is fixed in the second end of the slide rod (41); the sliding ring (43) is slidably connected to the slide rod (41); the storage block (44) is fixed in the slider (32), and the storage block (44) has a cylindrical groove (441) on which the slide rod (41) can be fitted; the locking rod (45) is arranged perpendicular to the slide rod (41) and slidably connected in the storage block (44); Release assembly (5), which is installed inside the cabinet (1) to release the residual voltage of the capacitor element (16); Grounding assembly (6) is installed inside the cabinet (1) to discharge residual charge delivered by the electrical components to the capacitor element (16).

2. The sensing interlocking switchgear based on a smart grid according to claim 1, characterized in that, The storage block (44) has a placement groove (442) arranged perpendicular to the axis of the slide rod (41), and the cavity of the placement groove (442) is connected to the cylindrical groove (441); the locking rod (45) is slidably connected in the placement groove (442), and one end of it is an arc transition surface corresponding to one side of the sliding ring (43) and extends into the cylindrical groove (441); both ends of the sliding ring (43) are arc surfaces and can slide against the arc transition surface; the side end face of the fixing head (42) facing the sliding ring (43) is a plane.

3. A sensing interlocking switchgear based on a smart grid according to claim 2, characterized in that, The maintenance component (4) also includes a sliding plate (47) and a spring (46); one side of the sliding plate (47) is fixed to the end of the engaging rod (45) away from the arc transition surface, and its circumferential direction slides against the inner wall of the placement groove (442); the spring (46) is located in the placement groove (442), and one end of its spring (46) is fixed to the other side of the sliding plate (47), and the other end is fixed to the inner wall of the placement groove (442) corresponding to the axis of the engaging rod (45).

4. A sensing interlocking switchgear based on a smart grid according to claim 1, characterized in that, The slide rail (3) has an axial groove (31) and a mounting plate (48) is fixed to one end of the slide rod (41) away from the fixed head (42). The mounting plate (48) is bolted to the inner wall of the groove (31) corresponding to the first side wall (12). The storage block (44) is fixed to one end of the slider (32) corresponding to the first side wall (12).

5. A sensing interlocking switchgear based on a smart grid according to claim 1, characterized in that, The release assembly (5) includes a connecting rod (51), a storage wheel (52), a pull rope (55), a reciprocating plate (56), and a support plate (57); a grounding box (14) is fixed to the outer wall of the cabinet (1); there are multiple connecting rods (51), one end of which is vertically rotatably connected to the inner wall of the second side wall (13); the storage wheel (52) is fixed to the connecting rod (51); one end of the pull rope (55) is wrapped around the storage wheel (52), and the other end is fixed to the bottom surface of the pull plate (2); the reciprocating plate (57) includes a connecting rod (51), a storage wheel (52), a pull rope (55), a reciprocating plate (56), and a support plate (57). The lower end of 6) is connected to the connecting rod (51) for transmission, and the rotation of the connecting rod (51) can drive the reciprocating plate (56) to reciprocate along the height direction of the cabinet (1); the side end face of the support plate (57) slides against the inner wall surface of the first side wall (12), and its lower plate surface is fixed to the upper end face of the multiple reciprocating plates (56); the top surface of the support plate (57) is fixed with a discharge rod (58) corresponding to the multiple capacitor elements (16); the discharge rod (58) is connected to the grounding box (14) through a wire.

6. A sensing interlocking switchgear based on a smart grid according to claim 5, characterized in that, It also includes a guide rod (59); one end of the guide rod (59) is vertically rotatably connected to the inner wall surface of the second side wall (13), and one end of the pull rope (55) passes around the guide rod (59) and is fixed to the bottom surface of the pull plate (2).

7. A sensing interlocking switchgear based on a smart grid according to claim 5, characterized in that, It also includes a reset member, the two ends of which are fixed to the first sidewall (12) and the connecting rod (51) respectively to drive the connecting rod (51) to reset and rewind the pull rope (55).

8. A sensing interlocking switchgear based on a smart grid according to claim 5, characterized in that, The grounding assembly (6) includes a mounting box (61), an air storage box (65), an extrusion plate (62), an extrusion cylinder (63), a conductive clamp (69), and a transmission component; the mounting box (61) has multiple clearance grooves on its side wall, and the mounting box (61) is fixed to the top surface of the support plate (57); the air storage box (65) is fixed inside the mounting box (61); the upper end of the extrusion plate (62) is fixed to the lower end face of the reciprocating plate (56), and an extrusion disc (621) is fixed to the lower end; the extrusion cylinder (63) is fixed inside the cabinet (1) by a support component, and the extrusion cylinder (69) is fixed to the top surface of the support plate (57); 3) The inner cavity is connected to the gas storage box (65) through the gas supply pipe (64); the extrusion plate (621) is slidably connected in the extrusion cylinder (63) to transport the air in the extrusion cylinder (63) to the gas storage box (65); there are multiple conductive clips (69) and they are rotatably connected in the relief groove; the transmission component is fixed in the mounting box (61) and connected to the gas storage box (65) and the conductive clips (69) through the air passage to drive two adjacent conductive clips (69) to clamp the capacitor element (16); the conductive clips (69) are connected to the grounding box (14) through the wire.

9. A sensing interlocking switchgear based on a smart grid according to claim 8, characterized in that, The transmission components include a transmission cylinder (66), a reciprocating rod (67), and a drive plate (68); the transmission cylinder (66) is fixed inside the mounting box (61) and one end of it is connected to the air storage box (65) through an air inlet pipe (661); the reciprocating rod (67) is slidably connected to the other end of the transmission cylinder (66); the drive plate (68) is slidably connected inside the mounting box (61) and one side of its plate is fixed to the end of the reciprocating rod (67) away from the transmission cylinder (66); a fixing groove (681) is provided on the upper side of the drive plate (68); a drive rod (692) is fixed at one end of the conductive clamp (69), a rotating rod (691) is fixed in the middle, and the other end can clamp the capacitor element (16); the drive rod (692) is inserted into the fixing groove (681), and one end of the rotating rod (691) is rotatably connected to the inner bottom wall of the mounting box (61).

10. A method of using a smart grid-based sensing interlocking switchgear according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Open the cabinet door (11) and push the pull plate (2) to move it along the first side wall (12); the slider (32) drives the storage block (44) to move. During the movement, the locking rod (45) slides under the pressure of the sliding ring (43); after the slider (32) slides into place, the locking rod (45) will move to the side of the sliding ring (43) away from the fixed head (42); S2. Pull the pull plate (2) to move so that the locking rod (45) contacts the sliding ring (43) and drives the sliding ring (43) to slide. When the sliding ring (43) contacts the fixed head (42), the sliding ring (43) will drive the locking rod (45) to slide. As the pull plate (2) is pulled, the locking rod (45) moves to the side of the fixed head (42) away from the sliding ring (43), so that the storage block (44) is no longer fitted with the sliding rod (41), and then the pull plate (2) is pulled out from the cabinet (1) for subsequent maintenance operations. S3. When the pull plate (2) is pulled, the release component (5) is driven synchronously to release the residual voltage inside the capacitor element (16); S4, the release component (5) synchronously drives the grounding component (6) to discharge the residual charge in the capacitor component (16) from the electrical components.

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