A 10kV smart grid outdoor high-voltage electric energy metering box with built-in insulation isolation structure and a smart sensing isolation method thereof

Abstract

The application relates to the technical field of smart power grids, in particular to a 10kV smart power grid outdoor high-voltage electric energy metering box with a built-in insulation isolation structure and a smart sensing isolation method thereof, which comprises a metering box body, a support installed in the metering box body, a bearing plate connected to the support, a partition plate connected to the bearing plate, and a toggle switch installed on the bearing plate; an insulation plate is slidably installed on the partition plate, the insulation plate is formed with symmetrically-distributed limiting holes, an electromagnetic locking mechanism is arranged on the bearing plate, a limiting rod is connected to the electromagnetic locking mechanism and is inserted into the limiting holes, a trigger limiting mechanism is arranged on the bearing plate and is connected to the insulation plate, a locking rod is connected to the trigger limiting mechanism, and a multistage regulation mechanism connected to the trigger limiting mechanism is further arranged on the bearing plate; when a circuit is short-circuited or overloaded, the multistage regulation mechanism can lock the position of the electromagnetic locking mechanism, and the locking rod is driven to move through the trigger limiting mechanism, so that the toggle switch is closed.

Description

Technical Field

[0001] This invention relates to the field of smart grid technology, specifically to a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation isolation structure and its intelligent sensing isolation method. Background Technology

[0002] The 10kV smart grid outdoor high-voltage power metering box is a key device in the power system for power metering, voltage transformation and circuit protection. It is widely used in urban distribution networks and rural power grids. Inside the metering box, the high-voltage power meter is connected to the primary high-voltage line through the wiring terminals. Its normal operation requires reliable insulation protection to prevent operators from accidentally touching live parts, and to prevent phase-to-phase short circuit faults caused by internal electric arcs, dirt or condensation.

[0003] In existing technologies, some metering boxes use an electromagnetically driven movable insulating plate as an isolation barrier. Under normal operating conditions, the electromagnetic locking mechanism is energized and locks the insulating plate in a closed position via a limit rod to isolate the high-voltage energized area. When normal maintenance is required, the operator manually disconnects the upstream power supply, the electromagnetic locking mechanism is de-energized and released, and the insulating plate can then be opened for maintenance personnel to operate.

[0004] However, when a short circuit or severe overload occurs inside the metering box, the protection device will drive the circuit breaker to trip and disconnect the circuit. At this time, the electromagnetic locking mechanism will simultaneously lose power, and the insulating plate will instantly lose its external restraint. If the equipment is subjected to vibrations from nearby equipment, wind swaying, or mechanical inertial impacts, the insulating plate may shift, causing the originally sealed safety insulation distance to be compromised, thus exposing operators to a serious safety risk of accidentally touching live parts. Summary of the Invention

[0005] The purpose of this invention is to provide a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation isolation structure and its intelligent sensing isolation method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure includes:

[0008] Metering box, and bracket installed inside the metering box, with a support plate connected to the bracket, a partition plate connected to the support plate, and a toggle switch installed on the support plate;

[0009] Also includes:

[0010] An insulating plate is slidably mounted on the partition plate. The insulating plate has symmetrically distributed limiting holes. An electromagnetic locking mechanism is provided on the bearing plate. A limiting rod that is inserted into the limiting holes is connected to the electromagnetic locking mechanism. The electromagnetic locking mechanism can lock the position of the insulating plate through the limiting rod and the limiting holes.

[0011] A trigger limiting mechanism is disposed on the support plate and connected to the insulating plate. A locking rod is connected to the trigger limiting mechanism. A multi-level control mechanism connected to the trigger limiting mechanism is also disposed on the support plate. The multi-level control mechanism can control the movement of the locking rod through the trigger limiting mechanism.

[0012] As a further aspect of the present invention: the electromagnetic locking mechanism includes an iron core and a fixing plate mounted on the bearing plate, and a coil is wound on the iron core.

[0013] As a further embodiment of the present invention: the electromagnetic locking mechanism further includes an electromagnetic rod slidably mounted on the fixed plate, the end of the electromagnetic rod is connected to a connecting plate, the connecting plate is connected to the limiting rod, a fixing ring is installed on the electromagnetic rod, and a first spring is sleeved on the electromagnetic rod, with the two ends of the first spring abutting against the fixing ring and the fixed plate respectively.

[0014] As a further embodiment of the present invention: the triggering limiting mechanism includes a first sliding groove formed on the bearing plate and symmetrically distributed, a first sliding block is slidably installed in the first sliding groove, and a movable rod is slidably installed on the first sliding block;

[0015] It also includes an elastic component and a driven component disposed on the support plate and connected to the movable rod.

[0016] As a further embodiment of the present invention: the elastic component includes a limiting ring mounted on the movable rod, and a second spring is sleeved on the movable rod, with the two ends of the second spring abutting against the limiting ring and the first sliding block, respectively.

[0017] As a further embodiment of the present invention: the driven component includes a support plate connected to the bearing plate and symmetrically distributed thereon, a limiting groove is formed on the support plate, a movable plate is connected to the end of the movable rod, and a follower rod that slides and engages with the limiting groove is installed on the movable plate.

[0018] As a further embodiment of the present invention: the multi-level control mechanism includes push rods installed on the side wall of the insulating plate and symmetrically distributed, the end of the push rod forming a lifting surface, the lifting surface abutting against the movable rod;

[0019] It also includes a sliding assembly and a guide assembly disposed on the support plate and connected to the follower rod.

[0020] As a further embodiment of the present invention: the sliding component includes a second sliding groove formed on the bearing plate and symmetrically distributed, a second sliding block is slidably installed in the second sliding groove, and a limiting block that abuts against the follower rod is installed on the side wall of the second sliding block.

[0021] As a further embodiment of the present invention: the guiding component includes a follower plate connected to the second sliding block, a guide groove is formed on the follower plate, a follower ring is installed on the limiting rod, a limiting post is connected to the follower ring and slides into the guide groove, and an arc-shaped locking plate is connected to the follower plate and abuts against the follower ring.

[0022] A smart sensing isolation method for a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation isolation structure includes the following steps:

[0023] Step 1: When the toggle switch is in the open state, the electromagnetic locking mechanism controls the limit rod to insert into the limit hole to lock the position of the insulating plate.

[0024] Step 2: When the toggle switch is in the closed position, the electromagnetic locking mechanism controls the limit rod to separate from the limit hole, allowing the insulation plate to be opened for routine maintenance;

[0025] Step 3: When the insulating plate is opened, the multi-stage control mechanism drives the trigger limit mechanism to move, and the locking rod locks the position of the toggle switch.

[0026] Step 4: When the toggle switch is in the open state and the circuit is short-circuited or overloaded, the electromagnetic locking mechanism drives the multi-stage control mechanism to move, thereby locking the position of the limit rod and keeping the insulating plate in a locked state. At the same time, the locking rod controls the toggle switch to be adjusted to the closed state and locks the position of the toggle switch.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] When the circuit is operating normally, the electromagnetic locking mechanism inserts the limiting rod into the limiting hole, locking the insulating plate in a closed position. When a short circuit or severe overload occurs, causing a surge in current, the coil current increases synchronously, the electromagnetic force strengthens, and drives the electromagnetic rod to continue to penetrate deeper. At the same time, when the subsequent protection device activates and cuts off the circuit, and the electromagnetic force completely disappears, the arc-shaped locking plate physically blocks the follower ring, preventing the limiting rod from exiting the limiting hole. In this way, the defect of traditional pure electromagnetic locking failure after power failure is overcome, and the safety protection failure caused by accidental slippage of the insulating plate is effectively avoided.

[0029] During the locking process of the limit rod position, the locking rod can force the toggle switch to the disconnect position and physically lock it, ensuring that the circuit is in a reliable disconnect mode under fault conditions. This prevents the secondary impact on the equipment caused by the instantaneous arc re-ignition during the fault, and also eliminates the possibility of accidental power restoration before the maintenance personnel troubleshoot and manually reset the circuit. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0031] Figure 2 This is a schematic diagram of the structure of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure from another angle in one embodiment.

[0032] Figure 3 This is a schematic diagram of the internal structure of a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure, as shown in one embodiment.

[0033] Figure 4 This is a schematic diagram of the structure of the bracket, bearing plate, insulating plate, and toggle switch in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0034] Figure 5 This is a schematic diagram of the structure of the insulating plate, push rod, and lifting surface in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0035] Figure 6 This is a schematic diagram of the limit rod insertion state in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure under the circuit energized state.

[0036] Figure 7 This is a schematic diagram of the limit rod locking state under abnormal circuit conditions in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0037] Figure 8 This is a schematic diagram showing the connection relationship between the electromagnetic locking mechanism, part of the multi-level control mechanism, and part of the trigger limit mechanism in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0038] Figure 9 for Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0039] Figure 10This is a schematic diagram showing the connection relationship between some electromagnetic locking mechanisms, some multi-level control mechanisms, and some trigger limit mechanisms in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0040] Figure 11 This is an exploded structural diagram of part of the multi-level control mechanism and part of the trigger limit mechanism in one embodiment of a 10kV smart grid outdoor high-voltage power metering box with built-in insulation and isolation structure.

[0041] In the diagram: 1. Metering box; 2. Support; 3. Bearing plate; 301. First slide groove; 302. Second slide groove; 4. Partition plate; 5. Insulating plate; 501. Limiting hole; 6. Push rod; 601. Lifting surface; 7. Iron core; 8. Coil; 9. Fixing plate; 10. Electromagnetic rod; 1001. Fixing ring; 11. First spring; 12. Connecting plate; 13. Limiting rod; 14. First sliding block; 15. Movable rod; 1501. Limiting ring; 16. Second spring; 17. Movable plate; 18. Follower rod; 19. Support plate; 1901. Limiting groove; 20. Second sliding block; 21. Limiting block; 22. Follower plate; 2201. First transverse groove; 2202. Inclined groove; 2203. Second transverse groove; 23. Arc-shaped clamping plate; 24. Follower ring; 2401. Limiting post; 25. Locking rod. Detailed Implementation

[0042] 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.

[0043] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0044] Please see Figures 1 to 11 In this embodiment of the invention, a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure includes:

[0045] Metering box 1, and bracket 2 installed inside metering box 1, support plate 3 connected to support plate 2, partition plate 4 connected to support plate 3, and toggle switch installed on support plate 3;

[0046] Also includes:

[0047] An insulating plate 5 is slidably mounted on the partition plate 4. The insulating plate 5 has symmetrically distributed limiting holes 501. An electromagnetic locking mechanism is provided on the bearing plate 3. A limiting rod 13 that is inserted into and cooperates with the limiting holes 501 is connected to the electromagnetic locking mechanism. The electromagnetic locking mechanism can lock the position of the insulating plate 5 through the limiting rod 13 and the limiting holes 501.

[0048] A trigger limiting mechanism is provided on the support plate 3 and connected to the insulating plate 5. A locking rod 25 is connected to the trigger limiting mechanism. A multi-level control mechanism connected to the trigger limiting mechanism is also provided on the support plate 3. The multi-level control mechanism can control the movement of the locking rod 25 through the trigger limiting mechanism.

[0049] Specifically, the insulating plate 5 is an insulating isolation structure used within the metering box 1 to isolate the operating area from the live area. With prolonged use of the high-voltage energy meter, short circuits may occur due to loose terminals or other problems, as well as overload issues caused by a surge in power load or poor contact. These can all lead to circuit disconnection. To ensure that the insulating plate 5 does not fail to lock due to these abnormalities, a hard lock needs to be triggered when an abnormality occurs. Therefore, when the circuit is normal, the electromagnetic locking mechanism controls the limit rod 13 to insert into the limit hole 501, locking the position of the insulating plate 5. When maintenance is required, the circuit can be disconnected, and the electromagnetic locking mechanism will control the limit rod 13 to disengage from the limit hole 501. At this time, the insulating plate 5 is no longer locked. The locking mechanism controls the lifting of the insulating plate 5 for maintenance. When the insulating plate 5 is lifted, it drives the related control mechanism to move, and triggers the limit mechanism to move the locking rod 25 to lock the position of the toggle switch. This ensures that the toggle switch is always in the closed state during maintenance. If a short circuit or overload occurs in the circuit, the electromagnetic locking mechanism will drive the multi-stage control mechanism to move and lock the position of the limit rod 13. At the same time, the multi-stage control mechanism will control the locking rod 25 to move through the limit mechanism, thereby controlling the toggle switch to quickly move to the closed state, thus disconnecting the circuit. In this way, the circuit can be quickly disconnected to avoid equipment damage, and the insulating plate 5 can be kept in the locked state when the power is off.

[0050] Please see Figure 6 - Figure 8 , Figure 10The electromagnetic locking mechanism includes an iron core 7 and a fixing plate 9 mounted on the bearing plate 3. A coil 8 is wound on the iron core 7. The electromagnetic locking mechanism also includes an electromagnetic rod 10 slidably mounted on the fixing plate 9. A connecting plate 12 is connected to the end of the electromagnetic rod 10. The connecting plate 12 is connected to the limiting rod 13. A fixing ring 1001 is mounted on the electromagnetic rod 10. A first spring 11 is sleeved on the electromagnetic rod 10. The two ends of the first spring 11 abut against the fixing ring 1001 and the fixing plate 9, respectively.

[0051] In detail, in the initial state, the insulating plate 5 is attached to the bottom of the metering box 1, and the insulating plate 5 forms an insulating and protective barrier. At this time, the coil 8 is not energized, the electromagnetic rod 10 is located at the end of its stroke away from the iron core 7, the distance between the fixed ring 1001 and the fixed plate 9 is the largest, and the elongation of the first spring 11 in its natural state is greater than the maximum distance between the fixed ring 1001 and the fixed plate 9. Therefore, the first spring 11 is in a pre-compressed state and always provides the fixed ring 1001 with a pushing force in the direction away from the fixed plate 9. In this state, the limiting rod 13 and the limiting hole 501 are separated, and the limiting rod 13 and the limiting hole 501 are in the same axial position.

[0052] When the circuit inside the metering box 1 is energized, the coil 8 is also energized with the same current. Under the action of the coil 8 and the iron core 7, an electromagnetic force will be generated, which will attract the electromagnetic rod 10. The electromagnetic rod 10 will move towards the iron core 7 and compress the first spring 11 through the fixing ring 1001. At this time, the connecting plate 12 drives the limiting rod 13 to move towards the insulating plate 5 in sync. Finally, the limiting rod 13 is inserted into the limiting hole 501 at the corresponding position on the insulating plate 5, thereby locking the position of the insulating plate 5. This ensures that the insulating plate 5 always provides insulation protection when energized, and also ensures that the insulating plate 5 cannot be opened for live operation when energized.

[0053] Please see Figure 3 , Figure 4 , Figure 10 , Figure 11The triggering and limiting mechanism includes a first sliding groove 301 formed on the support plate 3 and symmetrically distributed, a first sliding block 14 slidably installed in the first sliding groove 301, and a movable rod 15 slidably installed on the first sliding block 14; it also includes an elastic component and a driven component disposed on the support plate 3 and connected to the movable rod 15. The elastic component includes a limiting ring 1501 installed on the movable rod 15, a second spring 16 sleeved on the movable rod 15, the two ends of the second spring 16 respectively abutting against the limiting ring 1501 and the first sliding block 14. The driven component includes a support plate 19 connected to the support plate 3 and symmetrically distributed, a limiting groove 1901 formed on the support plate 19, a movable plate 17 connected to the end of the movable rod 15, and a follower rod 18 installed on the movable plate 17 that slidably engages with the limiting groove 1901.

[0054] Please see Figure 5 - Figure 11 The multi-level control mechanism includes push rods 6 symmetrically distributed on the side wall of the insulating plate 5, with a lifting surface 601 formed at the end of each push rod 6, which abuts against the movable rod 15; it also includes a sliding assembly and a guiding assembly disposed on the bearing plate 3 and connected to the follower rod 18. The sliding assembly includes a second sliding groove 302 symmetrically distributed on the bearing plate 3, with a second sliding block 20 slidably installed in the second sliding groove 302. A limiting block 21 abutting against the follower rod 18 is installed on the side wall of the second sliding block 20. The guiding assembly includes a follower plate 22 connected to the second sliding block 20, with a guide groove formed on the follower plate 22. A follower ring 24 is installed on the limiting rod 13, with a limiting post 2401 slidably fitted into the guide groove connected to the follower ring 24. An arc-shaped locking plate 23 abutting against the follower ring 24 is connected to the follower plate 22.

[0055] Furthermore, the guide groove can be divided into three sections: the first transverse groove 2201, the inclined groove 2202, and the second transverse groove 2203.

[0056] The limiting block 21 has two surfaces facing the follower rod 18: an inclined surface and a vertical surface. Initially, the circuit is de-energized. At this time, the fixing ring 1001 is located at the end of its stroke away from the fixing plate 9. Under the action of the connecting plate 12, the limiting rod 13 is separated from the limiting hole 501, while the insulating plate 5 is in contact with the bottom of the metering box 1, thus providing insulation protection. To this end, the insulating plate 5 uses the push rod 6 to control the lifting surface 601 to be misaligned with the movable rod 15. In this state, the distance between the limiting ring 1501 and the first sliding block 14 is at its maximum. The second spring 16 elongates more than the maximum distance between the limiting ring 1501 and the first sliding block 14 in its natural state. Therefore, the second spring 16 is in a pre-compressed state and always provides the movable rod 15 with a thrust away from the first sliding block 14 through the limiting ring 1501. Under the action of the movable rod 15, the distance between the movable plate 17 and the bearing plate 3 is minimized, so that the follower rod 18 is located at the end of the limiting groove 1901 near the bearing plate 3. The movable plate 17 also controls the locking rod 25 to be located above the toggle switch and in a separated state from the toggle switch.

[0057] The limiting rod 13 will control the limiting post 2401 to be located at the end of the first transverse groove 2201 away from the inclined groove 2202 through the follower ring 24. Under the action of the first transverse groove 2201 and the limiting post 2401, the follower plate 22 will be located at the end of the stroke close to the iron core 7, so that the arc-shaped clamping plate 23 and the follower ring 24 are in a misaligned state. The follower plate 22 will also control the second sliding block 20 to be located at the end of the second sliding groove 302. The second sliding block 20 will also control the limiting block 21 and the follower rod 18 to be in a misaligned state.

[0058] Please see Figure 6 When the toggle switch is in the open state, the circuit will be connected. Under the action of the coil 8 and the iron core 7, the electromagnetic rod 10 is guided to move, thereby controlling the limit rod 13 to be inserted into the limit hole 501 through the connecting plate 12. The limit rod 13 will also drive the follower ring 24 to move, thereby driving the limit post 2401 to slide along the first transverse groove 2201. Under normal circuit current, after the limit rod 13 is inserted into the limit hole 501 to the specified depth, the electromagnetic force will cancel out the elastic force of the first spring 11. At this time, the limit rod 13 controls the limit post 2401 to remain in the first transverse groove 2201 through the follower ring 24, and is about to enter the inclined groove 2202.

[0059] If a short circuit or severe overload occurs in the circuit, the current flowing through the coil 8 will surge, increasing the electromagnetic force and controlling the electromagnetic rod 10 to continue moving closer to the iron core 7. The electromagnetic rod 10 drives the limiting rod 13 to continue deeper into the limiting hole 501 through the connecting plate 12. The limiting rod 13 also controls the limiting post 2401 to slide along the first transverse groove 2201 through the follower ring 24. After leaving the first transverse groove 2201, it enters the inclined groove 2202. Under the action of the limiting post 2401 and the inclined groove 2202, the follower plate 22 and the arc-shaped clamping plate 23 move away from the iron core 7. The follower plate 22 drives the second sliding block 20 to move synchronously along the second sliding groove 302.

[0060] The second sliding block 20 drives the limiting block 21 to move to the position directly opposite the follower rod 18. At this time, the inclined surface of the limiting block 21 will abut against the follower rod 18. As the limiting block 21 continues to move, the inclined surface squeezes the follower rod 18, forcing the follower rod 18 to slide along the inclined direction of the limiting groove 1901, thereby driving the movable plate 17 to move synchronously. The movable plate 17 controls the locking rod 25 to move towards the direction close to the toggle switch and gradually abut against the toggle switch. The movable plate 17 will also drive the movable rod 15 to move synchronously, so that the first sliding block 14 slides along the first sliding groove 301. At the same time, the movable rod 15 drives the limiting ring 1501 to move towards the direction close to the first sliding block 14 and compresses the second spring 16.

[0061] Please see Figure 7 When the limiting post 2401 disengages from the inclined groove 2202 and enters the second transverse groove 2203, the follower plate 22 controls the arc-shaped clamping plate 23 to be in the position that cooperates with the follower ring 24. The inclined surface of the limiting block 21 separates from the follower rod 18, and the vertical surface abuts against the follower rod 18, locking the position of the follower rod 18. At this time, the follower rod 18 is located at the end of the other side of the limiting groove 1901, so that the movable plate 17 is located at the end of its stroke away from the bearing plate 3. Under the action of the movable plate 17, the locking rod 25 controls the toggle switch to be moved to the closed state, thereby disconnecting the control circuit. In this state, When the electromagnetic force disappears, the first spring 11 is released elastically. The fixed ring 1001 controls the electromagnetic rod 10 to move away from the iron core 7, thereby driving the limit rod 13 to move through the connecting plate 12. This causes the follower ring 24 to move towards the arc-shaped plate 23, so that the limit post 2401 slides along the second transverse groove 2203. When the limit post 2401 moves to the position where it engages with the inclined groove 2202, the follower plate 22 cannot move upward under the action of gravity, and the limit post 2401 cannot enter the inclined groove 2202. Thus, it passes the inclined groove 2202 and continues to slide along the second transverse groove 2203.

[0062] When the follower ring 24 abuts against the arc-shaped locking plate 23, the position of the limiting rod 13 is locked. In this state, the limiting rod 13 is still in the limiting hole 501, thus maintaining the locking state of the insulating plate 5 even when the power is off. The limiting post 2401 cooperates with the second transverse groove 2203 to lock the position of the follower plate 22 as well, ensuring that the arc-shaped locking plate 23 and the follower ring 24 are always in contact. At the same time, the follower plate 22 will also control the limiting block 21 and the follower rod 18 to be in contact through the second sliding block 20, ensuring that the follower rod 18 will not reset, thus ensuring that the locking rod 25 is always in contact with the toggle switch and keeping the toggle switch in the closed state.

[0063] Therefore, when a short circuit or severe overload occurs in the circuit, it can automatically trigger the locking of the position of the limit rod 13, ensuring that the insulation plate 5 will not fail to lock due to circuit disconnection under abnormal circuit conditions, thus preventing the insulation plate 5 from becoming loose and causing protection failure. At the same time, it can also automatically control the toggle switch to close through the locking rod 25 and always keep it closed, ensuring that the circuit is disconnected in time and avoiding the risk of connecting power before the maintenance is completed.

[0064] After the maintenance personnel have troubleshooted, they can manually control the limit rod 13 to move towards the limit hole 501, and drive the limit post 2401 to slide along the second transverse groove 2203 through the follower ring 24 until the limit post 2401 moves to the position where the second transverse groove 2203 and the inclined groove 2202 are connected. At this time, the follower plate 22 can be slightly raised so that the limit post 2401 enters the inclined groove 2202. The first spring 11 is released elastically, thereby guiding the limit rod 13 to disengage from the limit hole 501. The limit post 2401 will enter the first transverse groove 2201 along the inclined groove 2202, so that the follower plate 22 and the arc-shaped locking plate 23 are reset, so that the limit block 21 is reset. The second spring 16 controls the movable rod 15 to reset, so that the locking rod 25 is separated from the toggle switch.

[0065] If the circuit is normal and routine maintenance is required, the maintenance personnel can manually control the toggle switch to close, causing the electromagnetic force to disappear and the limit rod 13 to disengage from the limit hole 501. At this time, the insulating plate 5 can be controlled to rise, which will drive the push rod 6 to move, causing the lifting surface 601 to contact the end of the movable rod 15. Under the action of the lifting surface 601, the movable rod 15 moves aside and compresses the second spring 16 through the limit ring 1501. The movable rod 15 will also drive the movable plate 17 to move, causing the follower rod 18 to slide along the limit groove 1901, so that... The first sliding block 14 slides along the first sliding groove 301, and the movable plate 17 will also drive the locking rod 25 to move. When the lifting surface 601 separates from the movable rod 15, the vertical surface of the push rod 6 will abut against the movable rod 15 to ensure that the movable rod 15 will not reset. In this state, the follower rod 18 moves to the end of the limit groove 1901 away from the bearing plate 3, and the locking rod 25 moves to the position of abutting against the toggle switch in the closed state and locks the position of the toggle switch to ensure that the toggle switch cannot be opened during maintenance, thereby avoiding live work.

[0066] A smart sensing isolation method for a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation isolation structure includes the following steps:

[0067] Step 1: When the toggle switch is in the open state, under the action of the electromagnetic locking mechanism, the limit rod 13 is inserted into the limit hole 501 to lock the position of the insulating plate 5.

[0068] Step 2: When the toggle switch is in the off state, the electromagnetic locking mechanism controls the limit rod 13 to separate from the limit hole 501, and the insulating plate 5 can be opened for routine maintenance;

[0069] Step 3: When the insulating plate 5 is opened, the multi-level control mechanism drives the trigger limit mechanism to move, and the locking rod 25 locks the position of the toggle switch.

[0070] Step 4: When the toggle switch is in the open state and the circuit is short-circuited or overloaded, the electromagnetic locking mechanism drives the multi-stage control mechanism to move, thereby locking the position of the limit rod 13, so that the insulating plate 5 is in the locked state. At the same time, the toggle switch is controlled to be adjusted to the closed state by the locking rod 25, and the position of the toggle switch is locked.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure, comprising: Metering box, and bracket installed inside the metering box, with a support plate connected to the bracket, a partition plate connected to the support plate, and a toggle switch installed on the support plate; Its characteristic is that it further includes: An insulating plate is slidably mounted on the partition plate. The insulating plate has symmetrically distributed limiting holes. An electromagnetic locking mechanism is provided on the bearing plate. A limiting rod that is inserted into the limiting holes is connected to the electromagnetic locking mechanism. The electromagnetic locking mechanism can lock the position of the insulating plate through the limiting rod and the limiting holes. A trigger limiting mechanism is disposed on the support plate and connected to the insulating plate. A locking rod is connected to the trigger limiting mechanism. A multi-level control mechanism connected to the trigger limiting mechanism is also disposed on the support plate. The multi-level control mechanism can control the movement of the locking rod through the trigger limiting mechanism.

2. The 10kV smart grid outdoor high-voltage power metering box with built-in insulation structure according to claim 1, characterized in that, The electromagnetic locking mechanism includes an iron core and a fixing plate mounted on the support plate, and a coil is wound on the iron core.

3. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 2, characterized in that, The electromagnetic locking mechanism further includes an electromagnetic rod slidably mounted on the fixed plate. A connecting plate is connected to the end of the electromagnetic rod, and the connecting plate is connected to the limiting rod. A fixing ring is installed on the electromagnetic rod, and a first spring is sleeved on the electromagnetic rod. The two ends of the first spring abut against the fixing ring and the fixed plate, respectively.

4. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 1, characterized in that, The triggering and limiting mechanism includes a first sliding groove formed on the support plate and symmetrically distributed, a first sliding block slidably installed in the first sliding groove, and a movable rod slidably installed on the first sliding block; It also includes an elastic component and a driven component disposed on the support plate and connected to the movable rod.

5. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 4, characterized in that, The elastic component includes a limiting ring mounted on the movable rod, and a second spring is sleeved on the movable rod, with the two ends of the second spring abutting against the limiting ring and the first sliding block, respectively.

6. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 5, characterized in that, The driven component includes a support plate connected to the bearing plate and symmetrically distributed thereon. A limit groove is formed on the support plate. A movable plate is connected to the end of the movable rod. A follower rod that slides and engages with the limit groove is installed on the movable plate.

7. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 6, characterized in that, The multi-level control mechanism includes push rods installed on the side wall of the insulating plate and symmetrically distributed, with a lifting surface formed at the end of the push rod, and the lifting surface abutting against the movable rod; It also includes a sliding assembly and a guide assembly disposed on the support plate and connected to the follower rod.

8. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 7, characterized in that, The sliding assembly includes a second sliding groove formed on the bearing plate and symmetrically distributed, a second sliding block is slidably installed in the second sliding groove, and a limiting block that abuts against the follower rod is installed on the side wall of the second sliding block.

9. A 10kV smart grid outdoor high-voltage power metering box with a built-in insulation structure according to claim 8, characterized in that, The guiding component includes a follower plate connected to the second sliding block, a guide groove formed on the follower plate, a follower ring installed on the limiting rod, a limiting post connected to the follower ring that slides and engages with the guide groove, and an arc-shaped locking plate connected to the follower plate that abuts against the follower ring.

10. A smart sensing isolation method for a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation isolation structure, comprising a 10kV smart grid outdoor high-voltage power metering box with a built-in insulation isolation structure as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: When the toggle switch is in the open state, the electromagnetic locking mechanism controls the limit rod to insert into the limit hole to lock the position of the insulating plate. Step 2: When the toggle switch is in the closed position, the electromagnetic locking mechanism controls the limit rod to separate from the limit hole, allowing the insulation plate to be opened for routine maintenance; Step 3: When the insulating plate is opened, the multi-stage control mechanism drives the trigger limit mechanism to move, and the locking rod locks the position of the toggle switch. Step 4: When the toggle switch is in the open state and the circuit is short-circuited or overloaded, the electromagnetic locking mechanism drives the multi-stage control mechanism to move, thereby locking the position of the limit rod and keeping the insulating plate in a locked state. At the same time, the locking rod controls the toggle switch to be adjusted to the closed state and locks the position of the toggle switch.

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