Intelligent wiring device, non-power outage meter changing device and method

Abstract

This invention discloses an intelligent wiring device, an uninterrupted meter replacement device and method, relating to the field of electricity meter technology. It includes a junction box and connecting wires. The connecting wires include conductors and an insulating layer covering the conductors. One end of the conductor extends through the insulating layer to form a connector. The device also includes: several wiring ports, with the outlet and inlet connected via conductive posts. The connector is inserted into the wiring port and connected to the conductive post; a protective cylinder, sleeved on the outside of the connector and slidably connected to the insulating layer; and a locking mechanism, including a locking element on the protective cylinder and a locking surface on the junction box. When the locking element and locking surface cooperate, the movement of the protective cylinder is locked. This solution has a simple structure. During the process of the connector sliding into the wiring port, it is continuously protected by the protective cylinder, improving safety during operation. Simultaneously, the meter replacement device enables the old and new electricity meters to operate in parallel, ensuring continuous metering during the replacement process and preventing missed measurements.

Description

Technical Field

[0001] This invention relates to the field of electricity meter technology, specifically to an intelligent wiring device, an uninterrupted meter replacement device, and a method. Background Technology

[0002] Electricity metering instruments used for trade settlement are among the mandatory verification instruments stipulated by the State Administration for Quality and Technical Supervision. Strict regulations govern the periodic replacement and periodic calibration of these mandatory verification instruments. For a long time, the on-site replacement of electricity meters has been carried out through power outages. While the replacement of inductor-type electricity meters can be done without interrupting power to customers, the process still involves disconnecting the voltage circuit of the electricity meter and short-circuiting the secondary circuit of the current transformer. In effect, for the electricity meter itself, it is a power outage replacement process. The result is that during the periodic replacement of non-inductor-type electricity meters, customers are affected by short-term power outages; while for inductor-type electricity meters, although customers are not affected by power outages, the electricity consumption during the replacement period is missed, resulting in electricity loss.

[0003] For example, patent CN 208888296 U discloses a split-type wiring junction box, including a voltage terminal terminal block, an electricity meter current terminal block, and a terminal current terminal block. The junction box contains four voltage terminal terminal blocks, with electricity meter current terminal blocks and terminal current terminal blocks positioned between each pair of voltage terminal terminal blocks. Each voltage terminal terminal block has a dual-channel voltage terminal block and a main voltage terminal block, with a voltage connecting plate on each channel of the dual-channel voltage terminal block. Each electricity meter current terminal block has a three-channel current terminal block, with a first adjustable current connecting plate and a second adjustable current connecting plate in the three-channel current terminal block. Each terminal current terminal block has a dual-channel current terminal block, with a third adjustable current connecting plate in the dual-channel current terminal block.

[0004] However, this solution still has the following problems: when replacing meters without interrupting power, frequent live wiring is required. At this time, the front end of the connecting wire or terminal is exposed, which is easy to accidentally touch or generate electric sparks during connection, which is dangerous; replacing meters only through parallel connection of junction boxes does not have protection against open circuits, short circuits, or continuity detection, which can easily cause power loss or safety issues. Summary of the Invention

[0005] To address the problems existing in the prior art, an intelligent wiring device, a non-disconnect meter replacement device, and a method are provided to solve the problems mentioned in the above technical background.

[0006] The technical solution adopted by this invention to solve its technical problem is: This invention proposes an intelligent wiring device, including a junction box and a connecting wire. The connecting wire includes a conductor and an insulating layer covering the conductor. One end of the conductor extends through the insulating layer to form a connector. The device also includes: Several wiring ports are distributed on both sides of the junction box, forming an inlet and an outlet on each side. The outlet and inlet are connected by a conductive post. The connector is inserted into the wiring port and then connected to the conductive post. A protective sleeve is fitted over the outside of the connector and slidably connected to the insulating layer; The locking mechanism includes a locking member disposed on the protective cylinder and a locking surface disposed on the junction box. When the locking member cooperates with the locking surface, the axial movement of the protective cylinder is locked.

[0007] Preferably, a partition plate is slidably connected to the junction box. The partition plate is connected to the junction box by a compression spring. The partition plate has a plurality of sliding grooves that correspond one-to-one with the wiring ports. A locking groove is provided on one side of the sliding groove, and the side of the locking groove forms the locking surface. The locking element is a locking block fixed to the front end of the protective cylinder.

[0008] Preferably, the diameter of the wiring port is consistent with the outer diameter of the protective cylinder. The side of the wiring port is provided with a first groove into which the locking block slides and a second groove out which it slides. An opening is provided on one side of the locking groove. When the partition slides downward, the opening corresponds to the second groove and cooperates with the locking block.

[0009] Preferably, a cylindrical cam is fixed on the insulating layer, a guide groove is formed on the cylindrical cam, a slide rod that cooperates with the guide groove is fixed on the protective cylinder, and a slider is slidably connected to the insulating layer, the slider being fixed to the protective cylinder by a torsion spring.

[0010] Preferably, a conductive sheet is provided inside the junction box, and the connector is inserted into the junction box and connected to the conductive sheet. An elastic sheet is connected to the conductive sheet and / or the conductive post, and the conductive post and the conductive sheet are connected through the elastic sheet. An insulating plate is also fixed on the spacer plate, and the insulating plate is located above the connection position between the elastic sheet and the conductive post.

[0011] Preferably, a plurality of fastening screws are provided on the upper side of the conductive sheet, and the fastening screws are threadedly connected to the junction box.

[0012] Preferably, a plug rod is slidably connected to the junction box, the plug rod is connected to the junction box by a spring, and a slot that mates with the plug rod is provided on the partition plate.

[0013] A wiring method, employing the aforementioned intelligent wiring device, includes the following steps: S1: Hold the insulating layer and align it with the wiring port, then slide the protective tube into the wiring port; S2: Push the insulating layer so that the protective cylinder slides relative to the insulating layer, and the connector gradually emerges and slides into the wiring port to connect with the conductive post; S3: Rotate the protective cylinder to lock it in the axial direction through the cooperation of the locking part and the locking surface; S4: Repeat S1-S3 to connect all connecting wires to the junction box.

[0014] A meter replacement device that does not require power outages includes the aforementioned intelligent wiring device and a meter replacement unit, wherein the meter replacement unit is provided with a first iteration position and a second iteration position connected in parallel.

[0015] A method for replacing a meter without power interruption, using the aforementioned meter replacement device, includes the following steps: S1: Install the new meter in the first iteration position and run it in parallel with the old meter; S2: Remove the old meter from the permanent meter position and switch the new meter to operate independently; S3: Install the old meter in the second iteration position, and the new meter and the old meter are connected in parallel on the meter replacement device; S4: The new meter in the first iteration position is removed, and the old meter runs independently on the meter replacement device; S5: Install the new meter in the permanent meter position, and the new meter will operate in parallel with the old meter in the second iteration position; S6: Remove the old meter from the second iteration position, and the new meter operates independently on the permanent position.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This application features a protective cylinder that is slidably connected to the insulation layer. When the connecting wire is pushed into the terminal, the protective cylinder slides backward, gradually exposing the connector head. This allows the connector head to gradually enter the terminal and connect with the conductive post. During the process of the connector head sliding into the terminal, it is continuously protected by the protective cylinder and will not come into contact with the outside world, thereby reducing the generation of electric sparks and improving the safety during operation. At the same time, after the connector head is connected to the conductive post, rotating the protective cylinder causes the locking element to engage with the locking surface, locking the axis of the protective cylinder and helping to maintain a stable connection of the connector head.

[0017] This application is equipped with a torsion spring and a cylindrical cam. A slide rod that cooperates with the cylindrical cam is fixed on the protective cylinder. When the connector is inserted into the junction box, the protective cylinder gradually slides along the insulation layer. At this time, the slide rod slides along the guide groove on the cylindrical cam. The guide groove is divided into a vertical groove and a horizontal groove. When the slide rod slides into the horizontal groove, the elastic force of the torsion spring is released, thereby driving the protective cylinder to rotate, so that the locking element and the locking surface cooperate to lock the protective cylinder.

[0018] This application features a partition plate with locking grooves for locking the protective cylinders. After the protective cylinders are locked onto the partition plate, pressing down on the partition plate allows the locking blocks on the protective cylinders to slide out of the locking grooves. This enables one-button unlocking of all protective cylinders on the same side, improving disassembly efficiency. Simultaneously, an insulating plate is fixed to the partition plate. Pressing down on the partition plate causes the insulating plate to insert between the elastic sheet and the conductive post, disconnecting the power to the connection port and further enhancing safety when disconnecting the connecting wires.

[0019] This application enables multiple parallel connections of new and old electricity meters through a meter replacement device. Before each transfer of a meter, the two meters are connected in parallel and measured synchronously before the meter to be transferred is disconnected, ensuring that at any time during the entire process, at least one meter is measuring normally, which helps to eliminate the risk of missed measurement. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of the junction box and connecting wires of the present invention. Figure 2 This is a front view of the junction box and connecting wires of the present invention. Figure 3 This is the present invention. Figure 2 Sectional view of section AA; Figure 4 This is the present invention. Figure 2 Sectional view of section BB; Figure 5 This is a perspective view of the connecting wire of the present invention (with a torsion spring); Figure 6 This is a perspective view of the connecting wire of the present invention (without torsion spring); Figure 7 This is a perspective view of the spacer plate of the present invention; Figure 8 This is a perspective view (state one) of the spacer plate and protective cylinder of the present invention in combination; Figure 9 This is a perspective view (state two) of the spacer plate and protective cylinder of the present invention in combination; Figure 10 This is a flowchart of the electricity meter replacement process of the present invention; Figure 11 This is a perspective view of the meter changer of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Junction box; 2. Connector; 3. Wiring port; 4. Conductive post; 5. Protective cylinder; 6. Locking groove; 7. Spare plate; 8. Slide groove; 9. Locking block; 10. Cylindrical cam; 11. Guide groove; 12. Slide rod; 13. Slider; 14. Torsion spring; 15. Conductive sheet; 16. Elastic sheet; 17. Insulating plate; 18. Fastening screw; 19. Insert rod; 20. Spring; 21. Slot; 22. Compression spring; 23. Meter changer; 24. First iteration position; 25. Second iteration position. Detailed Implementation

[0022] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0023] Furthermore, terms such as “long,” “short,” “inner,” and “outer” indicate orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the purpose of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have this specific orientation or operate in a specific orientational configuration, and should not be construed as a limitation of the present invention.

[0024] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. Example

[0025] refer to Figure 1 - Figure 9 This embodiment proposes an intelligent wiring device, including a junction box 1 and a connecting wire. The connecting wire includes a conductor and an insulating layer covering the conductor. One end of the conductor extends through the insulating layer to form a connector 2. The device also includes: Several wiring ports 3 are distributed on both sides of the junction box 1, forming an inlet and an outlet respectively. The outlet and the inlet are connected by a conductive post 4. The connector 2 is inserted into the wiring port 3 and connected to the conductive post 4. The protective sleeve 5 is sleeved on the outside of the connector 2 and slidably connected to the insulation layer; The locking mechanism includes a locking element disposed on the protective cylinder 5 and a locking surface disposed on the junction box 1. When the locking element and the locking surface cooperate, the axial movement of the protective cylinder 5 is locked.

[0026] Specifically, the top of the junction box 1 is detachably connected to a cover, which is connected to the upper surface of the junction box 1 by bolts. This facilitates the protection of the internal structure of the junction box 1 and makes it convenient to maintain and adjust the internal structure of the junction box 1.

[0027] Specifically, the diameter of the connection port 3 is consistent with the outer diameter of the protective cylinder 5. Holding the insulation layer of the connecting wire, place the protective cylinder 5 into the corresponding connection port, and then push the connecting wire so that the protective cylinder 5 gradually slides away from the connector 2 along the insulation layer. The connector 2 gradually emerges from the protective cylinder 5 until the connector 2 contacts the conductive post 4. At this time, rotate the protective cylinder 5 so that the locking part and the locking surface cooperate to lock the axial movement of the protective cylinder 5.

[0028] Specifically, the sliding protective sleeve 5 can completely cover the outside of the connector 2 and only gradually emerges during the process of pushing into the wiring port 3. The connector 2 will not be exposed at all, which can reduce the risk of accidental contact when changing meters without power interruption and improve the safety of live operation.

[0029] A partition plate 7 is slidably connected to the junction box 1. The partition plate 7 is connected to the junction box 1 through a compression spring 22. Several sliding grooves 8 are opened on the partition plate 7, which correspond one-to-one with the wiring port 3. A locking groove 6 is opened on one side of the sliding groove 8. The side of the locking groove 6 forms a locking surface. The locking component is a locking block 9 fixed to the front end of the protective cylinder 5.

[0030] Specifically, there are two partition plates 7, which correspond to the outlet and the inlet respectively.

[0031] Specifically, the width of the groove 8 is the same as the outer diameter of the protective cylinder 5, the length of the groove 8 is greater than the outer diameter of the protective cylinder 5, and the bottom of the groove 8 is provided with an elongated hole for the connector 2 to pass through. The width of the elongated hole is less than the outer diameter of the protective cylinder 5 and greater than the diameter of the connector 2.

[0032] Specifically, during normal use, the compression spring 22 uses its elasticity to keep the partition plate 7 above the junction box 1. At this time, the lower end of the slide groove 8 corresponds to the wiring port 3. After the protective cylinder 5 enters the wiring port 3, it is blocked by the elongated hole at the bottom of the slide groove 8 and cannot continue to move. At this time, if the insulating layer is pushed, the protective cylinder 5 and the insulating layer will slide relative to each other. The insulating layer drives the connector 2 to slide out from the protective cylinder 5, pass through the elongated hole and connect with the conductive post 4. After the connection is established, the protective cylinder 5 is rotated, and the protective cylinder 5 drives the locking block 9 to slide into the locking groove 6, thereby locking the movement of the axis of the protective cylinder 5.

[0033] The diameter of the wiring port 3 is consistent with the outer diameter of the protective cylinder 5. The side of the wiring port 3 is provided with a first groove into which the locking block 9 slides and a second groove out of which it slides. An opening is provided on one side of the locking groove 6. When the partition plate 7 slides down, the opening corresponds to the second groove and cooperates with the locking block 9.

[0034] Specifically, the first groove is formed on the upper side of the wiring port 3, and the second groove is formed on the left or right side of the wiring port 3. The width of both the first groove and the second groove is greater than the width of the locking block 9. In this embodiment, the second groove is formed on the left side of the wiring port 3.

[0035] Specifically, in this embodiment, the first groove and the second groove are distributed at 90 degrees along the circumferential direction of the wiring port 3.

[0036] Specifically, when the connecting wire is inserted into the terminal 3, the locking block 9 on the protective cylinder 5 slides from the first groove into the junction box 1 until the protective cylinder 5 abuts against the bottom of the sliding groove 8. At this time, the protective cylinder 5 is rotated, and the locking block 9 slides into the locking groove 6 to lock the protective cylinder 5. When it is necessary to release the locking of the protective cylinder 5, press down on the partition plate 7. Since the diameter of the protective cylinder 5 is the same as that of the terminal 3, the protective cylinder 5 will not move with the partition plate 7. As the partition plate 7 moves, the locking block 9 slides relative to the locking groove 6. The opening on one side of the locking groove 6 gradually slides to the position corresponding to the locking block 9. After the opening corresponds to the locking block 9, pull the protective cylinder 5 outward, and the locking block 9 can slide out of the terminal 3 along the second groove.

[0037] Specifically, pressing the partition plate 7 unlocks all connecting wires on the same side, enabling simultaneous unlocking of multiple connecting wires, significantly shortening the wire removal time and reducing the duration of live-line work.

[0038] A cylindrical cam 10 is fixed on the insulating layer. A guide groove 11 is provided on the cylindrical cam 10. A slide rod 12 that cooperates with the guide groove 11 is fixed on the protective cylinder 5. A slider 13 is also slidably connected on the insulating layer. The slider 13 is fixed to the protective cylinder 5 by a torsion spring 14.

[0039] Specifically, the cross-section of the insulating layer is square, and the slider 13 can only slide along the length of the insulating layer, and cannot rotate relative to the insulating layer.

[0040] Specifically, the guide groove 11 includes a vertical groove along the length of the cylindrical cam 10 and a transverse groove along the circumference of the cylindrical cam 10. After the protective cylinder 5 is placed in the wiring port 3, the connecting wire is pushed forward, and the protective cylinder 5 slides relative to the insulation layer. At this time, the slide rod 12 on the protective cylinder 5 slides along the vertical groove. When the slide rod slides to the position of the transverse groove, the torsion spring 14 releases its elastic force, causing the protective cylinder 5 to rotate, so that the slide rod 12 slides along the transverse groove. At this time, the protective cylinder 5 drives the locking block 9 to slide into the locking groove 6, completing the locking.

[0041] Specifically, after the connecting wire is pushed into place, the torsion spring 14 can automatically drive the protective cylinder 5 to rotate and lock, eliminating the need for manual rotation, reducing manual actions during live work, and lowering the risk of accidental contact; at the same time, the length of the vertical groove is reasonably set so that automatic locking will only be triggered when the connector 2 and the conductive post 4 are fully in contact, thus structurally eliminating the problem of loose connection or locking before proper connection, and ensuring the reliability of wiring.

[0042] A conductive sheet 15 is provided inside the junction box 1. After the connector 2 passes through the junction box 1, it is connected to the conductive sheet 15. An elastic sheet 16 is connected to the conductive sheet 15 and / or the conductive post 4. The conductive post 4 and the conductive sheet 15 are connected through the elastic sheet 16. An insulating plate 17 is also fixed on the partition plate 7. The insulating plate 17 is located above the connection position between the elastic sheet 16 and the conductive post 4.

[0043] Specifically, the side of the conductive sheet 15 is V-shaped. After the connector 2 is inserted into the terminal 3, it abuts against one side of the V-shape. At this time, the V-shape can continuously provide elasticity, so that the connector and the conductive sheet 15 remain in a continuous communication state, reducing the possibility of poor connection.

[0044] Specifically, the elastic sheet 16 can continuously provide elastic force, keeping the conductive post 4 and the conductive sheet 15 in a connected state, ensuring the electrical stability of the metering circuit during the meter replacement process.

[0045] Specifically, when the spacer 7 is pressed, the spacer 7 simultaneously moves the insulating plate 17 downward and inserts it between the conductive post 4 and the conductive sheet 15, causing the elastic sheet 16 to contract, thereby physically cutting off the circuit. This avoids disconnecting the wire while it is energized and reduces the risk of electrical arcing and electric shock. Furthermore, the unlocking of the protective cylinder 5 and the power disconnection of the connecting wire can be linked, and both operations can be completed with a single press, simplifying the work process and preventing unauthorized disconnection of wires without power, thus improving the standardization of operations.

[0046] Several fastening screws 18 are provided on the upper side of the conductive sheet 15, and the fastening screws 18 are threadedly connected to the junction box 1.

[0047] Specifically, the fastening screw 18 can be adapted to different types of connecting wires such as hard wires and multi-strand flexible wires. In addition to the connecting wires with the protective sleeve 5, it can also connect to the existing wires on site, making it more widely applicable.

[0048] A plug rod 19 is slidably connected to the junction box 1. The plug rod 19 is connected to the junction box 1 by a spring 20. A slot 21 that mates with the plug rod 19 is provided on the partition plate 7.

[0049] Specifically, after pressing down on the partition plate 7, the slot 21 slides to the position corresponding to the insertion rod 19. At this time, the spring 20 releases its elastic force, causing the insertion rod 19 to slide into the slot 21, thus locking the partition plate 7 after it is pressed down, which is beneficial for disconnecting the connecting wire from the wiring port 3.

[0050] The working principle and usage process of this embodiment.

[0051] Before starting work, check the condition of junction box 1 and connecting wires. First, confirm that the junction box cover is installed securely, the partition plate 7 is in the upper position under the action of the compression spring 22, the plug rod 19 is in the pop-out state, the protective sleeve 5 of the connecting wire completely covers the connector 2, and there is no exposed connector 2.

[0052] Holding the insulation layer of the connecting wire, align the protective cylinder 5 with the target wiring port 3, align the locking block 9 with the first groove on the wiring port 3, and push it in smoothly until the front end of the protective cylinder 5 abuts against the bottom of the slide groove 8.

[0053] As the insulating layer continues to be pushed, the protective cylinder 5 remains stationary due to the restriction of the elongated hole at the bottom of the slide groove 8. At this time, the protective cylinder 5 slides relative to the insulating layer. The slide rod 12 on the protective cylinder 5 slides along the vertical groove on the cylindrical cam 10. Meanwhile, the connector 2 gradually extends out of the protective cylinder 5 and passes through the elongated hole at the bottom of the slide groove 8, contacting the “V”-shaped conductive sheet 15. At this time, the conductive sheet 15 is connected to the conductive post 4 through the elastic sheet.

[0054] When connector 2 is fully in contact, slide rod 12 slides into the transverse groove on cylindrical cam 10, torsion spring 14 releases its elastic force, causing protective cylinder 5 to rotate 90 degrees, locking block 9 slides into locking groove 6 to lock the protective cylinder 5 along its axis, and wiring operation is completed.

[0055] When disconnection is required, press down on the spacer 7 to slide it downwards. The slot 21 slides to the position corresponding to the insertion rod 19. The spring 20 releases its elastic force, causing the insertion rod 19 to slide into the slot 21, locking the spacer 7 after it is pressed down. At this time, the opening corresponds to the second groove and is at the same height as the locking block 9. The locking block 9 can slide freely out of the opening and the second groove. At the same time, the insulating plate 17 moves downwards and inserts between the conductive post 4 and the conductive sheet 15, causing the elastic sheet 16 to contract, thereby physically cutting off the circuit. All connecting wires can then be pulled out smoothly, completing the disconnection operation. Example

[0056] This embodiment proposes a wiring method using the intelligent wiring device described in Embodiment 1, characterized by the following steps: S1: Hold the insulating layer corresponding to the wiring port 3 and slide the protective cylinder 5 into the wiring port 3; S2: Push the insulating layer so that the protective cylinder 5 slides relative to the insulating layer, and the connector gradually emerges and slides into the wiring port 3 to connect with the conductive post 4; S3: Rotate the protective cylinder 5 so that the protective cylinder 5 is locked in the axial direction through the cooperation of the locking part and the locking surface; S4: Repeat S1-S3 to connect all connecting wires to the junction box. Example

[0057] refer to Figure 1 - Figure 11 This embodiment proposes a meter replacement device that does not require power outages, including the intelligent wiring device described in embodiment 1, and also includes a meter replacement instrument 23, which is provided with a first iteration bit 24 and a second iteration bit 25 connected in parallel.

[0058] Specifically, the meter changer 23 is equipped with two bases, and wiring terminals are installed in the bases to form the first iteration position 24 and the second iteration position 25.

[0059] The meter replacement device uses the KJ-320B three-phase uninterrupted power meter replacement device. This model is a universal three-phase inductive uninterrupted power meter replacement tool. When used in conjunction with a piercing splitter or junction box, it facilitates continuous metering between the old and new meters, achieving the goal of safe and uninterrupted meter replacement. Parameters are as follows: Example

[0060] refer to Figure 1 - Figure 11 This embodiment proposes a method for replacing meters without power interruption, using the meter replacement device described in Embodiment 3, and includes the following steps: S1: Install the new meter on the first iteration position 24 and run it in parallel with the old meter; S2: Remove the old meter from the permanent meter position and switch the new meter to operate independently; S3: Install the old electricity meter on the second iteration position 25, and the new electricity meter and the old electricity meter are connected in parallel on the meter replacement device 23; S4: The new meter on the first iteration bit 24 is removed, and the old meter runs independently on the meter replacement device 23; S5: Install the new meter in the permanent meter position, and the new meter will operate in parallel with the old meter in the second iteration position 25; S6: Remove the old meter on the second iteration position 25, and the new meter will operate independently on the permanent position.

[0061] Specifically, taking advantage of the parallel operation of three-phase energy meters, the meter replacement device is first connected to the old meter through junction box 1. The new meter is then installed in the first iteration position on the meter replacement device 23, achieving the first parallel operation of the new meter and the old meter (the operating three-phase energy meter) in the permanent position. At this time, the total power load is the sum of the power measured by the two three-phase energy meters.

[0062] The voltage and current loops of the old meter on the permanent meter position are cut off, and the new meter is switched to independent operation. At this time, the total power load is independently measured and operated by the new meter installed on the first iteration position 24.

[0063] The old electricity meter removed from the permanent meter position is reinstalled on the second iteration position 25 of the meter replacement device 23, so that the new electricity meter and the old electricity meter can be connected in parallel for the second time on the meter replacement device 23, and the total electricity load is measured separately in the new and old meters for the second time.

[0064] The voltage and current circuits of the new meter on the first iteration position 24 of the meter replacement device 23 are cut off, and the old meter is independently measured on the second iteration position.

[0065] The new meter is installed in the permanent meter position. At this time, the new meter in the permanent meter position and the old meter in the second iteration position 25 are connected in parallel. The new meter and the old meter continue to measure the power load separately.

[0066] Finally, the voltage and current loop of the old meter at the second iteration position 25 is cut off, and the new meter operates independently at the permanent position, thus exiting the dedicated iteration equipment and marking the completion of the three-phase energy meter replacement.

[0067] This method employs multiple parallel meter replacements. The first parallel connection ensures uninterrupted load metering by connecting the new meter to the old meter in operation via a meter replacement device. This allows the total power load to be measured by both the new and old meters, ensuring uninterrupted power supply to users and providing an accurate basis for subsequent power carry-over through cross-verification of the metering data from the two meters. This avoids omissions or deviations in power metering during the meter replacement process.

[0068] The second parallel connection involves removing the old meter from its permanent location and transferring it to the meter replacement device to be connected in parallel with the new meter again, so that the total electricity consumption is measured separately by the two meters once more.

[0069] The third parallel connection is to ensure the accuracy of the new meter's independent operation. The new meter, installed in the permanent meter position, is connected in parallel with the old meter on the meter replacement device for the third time, allowing both meters to continue measuring electricity consumption separately. This step verifies the accuracy of the new meter before it independently undertakes metering tasks, confirming that the new meter's measurement data is consistent with the old meter, ensuring fairness in electricity metering for users. Finally, the old meter's circuit is disconnected, allowing the new meter to stably and independently perform metering work, completing the entire meter replacement process. Compared to directly connecting the meter in parallel using a junction box, this method, using a meter replacement device for multiple parallel connections, significantly improves the safety of meter replacement and can also detect whether the circuit is accurately connected during the replacement process, ensuring accurate electricity measurement during meter replacement.

[0070] The specific operating procedures and precautions for changing the meter.

[0071] ① Preparations for meter replacement: Prepare junction box 1 and connecting wires. Connect the connecting wires to meter replacement device 23. Install the new energy meter onto the first iteration position 24 of meter replacement device 23. Loosen the upper and lower rows of screws on the meter terminal button (A-phase current in, C-phase current out) corresponding to the fixing rod marked with a black dot on the iteration position. After inserting the new energy meter and it is firmly attached to the meter position base, tighten the corresponding screws.

[0072] Note 1: When installing the new and old electricity meters into the meter position, the upper and lower rows of screws on the electricity meter terminals corresponding to the meter position fixing rod (marked with black dots) must be loosened; Note 2: Tighten the other lower screws on the meter terminal button to connect the spring pin on the meter position; or when the lower copper part of the meter terminal button is well exposed (i.e. the copper part is not blocked by plastic), the lower screws do not need to be tightened.

[0073] ② Connector markings: ③ Initial uninterrupted meter replacement procedure: Connect the cable to the user's electricity meter. The meter replacement device's selector switch activates, and the equipment checks for normal operation before proceeding with the meter replacement work: Switch 24 of the first iteration position of the meter replacement device should be turned on. The voltage and current indicator lights Ua / Ia, Ub / Ib, and Uc / Ic of the first iteration position should be normal. The Ia / Ib / Ic continuity indicator lights should also display normally. If the display is abnormal, consider whether the electricity meter connection is reliable. If necessary, use the CT reset button to restore the CT terminal short circuit caused by the CT high voltage. After confirming that the electricity meter is functioning normally, proceed with the subsequent meter replacement work.

[0074] To remove the user's old electricity meter: At the junction box, first disconnect the current links for each phase, then disconnect the voltage links for each phase, thus de-energizing the meter. Then, disconnect 10 / 7 of the old meter's wires in sequence.

[0075] Install the old electricity meter into the second iteration position 25 of the meter replacement device, and turn the switch of the second iteration position 25 to on. Confirm that the voltage and current indicator lights Ua / Ia, Ub / Ib, and Uc / Ic of the second iteration position 25 are normal. Then turn the switch of the first iteration position 24 to off. At this time, the Ia / Ib / Ic on / off indicator lights should be displayed normally (Warning: If the indicator lights are not displayed, the subsequent meter replacement work cannot be carried out).

[0076] Installing a new meter: Remove the new meter from position 24 of the first iteration of the meter replacement device, install the new meter on the user's meter position, and connect the power supply wires one by one; first restore the Link connecting each phase voltage in the junction box, and then restore the Link connecting each phase current. The new meter will work normally.

[0077] Remove the connecting wires of each phase current loop in the LJX1 line, read the reading of the old meter on the meter changer, and then turn the second iteration position 25 switch of the meter changer to the off position.

[0078] Disconnect the voltage connection wire or pin assembly (customized) of LJX1 line from the user's meter. The installation process is complete once the end cap of the electricity meter is installed and sealed with lead.

[0079] ④ Procedure for replacing the meter again without power interruption: Except for the fact that it is not necessary to use a splitter and special screws to connect the user's electricity meter, the rest of the operation is the same as the procedure for the first meter replacement without power interruption.

[0080] Precautions for operating the uninterrupted meter replacement device: The entire process involves live operation, therefore it is necessary to strictly adhere to live operation regulations.

[0081] Before operating the equipment, professional training and passing an exam are required.

[0082] Protective equipment is worn completely and reliably; there are at least two workers (including two) and a dedicated person is available for supervision.

[0083] When working, stand on an insulating mat or wear qualified insulating shoes and protective gloves, and ensure that the tools used are well insulated.

[0084] It is necessary to strictly follow the operating procedures step by step.

[0085] Handling abnormal situations: Practical Significance: For a long time, the periodic replacement of transformer-type energy meters has been carried out under power load conditions by disconnecting the input voltage (secondary voltage of the voltage transformer) and short-circuiting the secondary current of the current transformer, thus briefly stopping metering. Tests have shown that the typical operation time is about 10-15 minutes, with power loads usually exceeding 100kW. For ease of calculation, 100kW in 10 minutes equates to approximately 17 kWh of lost electricity. For large users, very large users, and metering at critical points, the electricity loss during meter replacement is considerable. Moreover, a city or region may have numerous high-supply, high-volume and high-supply, low-volume users; calculated over a three-year cycle, tens of thousands or even more users require periodic replacement each year. If the current traditional replacement method is used, the cumulative annual electricity loss would be hundreds of thousands of kWh or more. This represents a significant economic loss for the power supply sector and is one of the factors contributing to "line losses" in the power supply sector.

[0086] Therefore, in this solution, the three-phase energy meters are operated in parallel to ensure continuous metering during the replacement process, which plays a positive and important role in preventing missed measurements and reducing line losses for the power supply department.

[0087] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A smart wiring device, comprising a junction box (1) and a connecting wire, wherein the connecting wire includes a conductor and an insulating layer covering the conductor, and one end of the conductor extends through the insulating layer to form a connector (2), characterized in that, Also includes: Several wiring ports (3) are distributed on both sides of the junction box (1) and form an inlet and an outlet on each side respectively. The outlet and the inlet are connected by a conductive post (4). The connector (2) passes through the wiring port (3) and is connected to the conductive post (4). The protective sleeve (5) is sleeved on the outside of the connector (2) and slidably connected to the insulating layer; The locking mechanism includes a locking member disposed on the protective cylinder (5) and a locking surface disposed on the junction box (1). When the locking member cooperates with the locking surface, the axial movement of the protective cylinder (5) is locked.

2. The intelligent wiring device according to claim 1, characterized in that, A partition plate (7) is slidably connected to the junction box (1). The partition plate (7) is connected to the junction box (1) by a compression spring (22). The partition plate (7) has a number of sliding grooves (8) that correspond one-to-one with the wiring port (3). A locking groove (6) is provided on one side of the sliding groove (8). The side of the locking groove (6) forms the locking surface. The locking component is a locking block (9) fixed to the front end of the protective cylinder (5).

3. The intelligent wiring device according to claim 2, characterized in that, The diameter of the wiring port (3) is consistent with the outer diameter of the protective cylinder (5). The side of the wiring port (3) is provided with a first groove into which the locking block (9) slides and a second groove out of which it slides. An opening is provided on one side of the locking groove (6). When the partition plate (7) slides downward, the opening corresponds to the second groove and cooperates with the locking block (9).

4. The intelligent wiring device according to claim 1, characterized in that, A cylindrical cam (10) is fixed on the insulating layer. A guide groove (11) is provided on the cylindrical cam (10). A slide rod (12) that cooperates with the guide groove (11) is fixed on the protective cylinder (5). A slider (13) is also slidably connected on the insulating layer. The slider (13) is fixed to the protective cylinder (5) by a torsion spring (14).

5. The intelligent wiring device according to claim 1, characterized in that, The junction box (1) is provided with a conductive sheet (15). The connector (2) is inserted into the junction box (1) and connected to the conductive sheet (15). An elastic sheet (16) is connected to the conductive sheet (15) and / or the conductive post (4). The conductive post (4) and the conductive sheet (15) are connected through the elastic sheet (16). An insulating plate (17) is also fixed on the spacer plate (7). The insulating plate (17) is located on the upper side of the connection position between the elastic sheet (16) and the conductive post (4).

6. The intelligent wiring device according to claim 5, characterized in that, A plurality of fastening screws (18) are provided on the upper side of the conductive sheet (15), and the fastening screws (18) are threadedly connected to the junction box (1).

7. The intelligent wiring device according to claim 1, characterized in that, A plug rod (19) is slidably connected to the junction box (1). The plug rod (19) is connected to the junction box (1) by a spring (20). A slot (21) is provided on the partition plate (7) to cooperate with the plug rod (19).

8. A wiring method, employing the intelligent wiring device according to any one of claims 1-7, characterized in that, Includes the following steps: S1: Hold the insulating layer and align it with the wiring port (3), then slide the protective cylinder (5) into the wiring port (3); S2: Push the insulating layer so that the protective cylinder (5) slides relative to the insulating layer, and the connector (2) gradually emerges and slides into the wiring port (3) to connect with the conductive post (4); S3: Rotate the protective cylinder (5) so that the protective cylinder (5) is locked in the axial direction of the protective cylinder (5) through the cooperation of the locking part and the locking surface; S4: Repeat S1-S3 to connect all connecting wires to the junction box.

9. A meter replacement device that does not require power outages, characterized in that, The device includes the intelligent wiring device according to any one of claims 1-7, and further includes a meter changer (23), wherein the meter changer (23) is provided with a first iteration bit (24) and a second iteration bit (25) connected in parallel.

10. A method for replacing a meter without power interruption, using the meter replacement device as described in claim 9, characterized in that, Includes the following steps: S1: Install the new meter in the first iteration position (24) and run it in parallel with the old meter; S2: Remove the old meter from the permanent meter position and switch the new meter to operate independently; S3: Install the old meter on the second iteration position (25), and the new meter and the old meter are connected in parallel on the meter replacement device (23); S4: Remove the new meter on the first iteration position (24), and the old meter runs independently on the meter changer (23); S5: Install the new meter in the permanent meter position, and the new meter is connected in parallel with the old meter in the second iteration position (25); S6: Remove the old meter on the second iteration position (25), and the new meter operates independently on the permanent position.

Images